net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2022 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 static int validate_he_capa(const struct nlattr *attr,
 289                             struct netlink_ext_ack *extack)
 290 {
 291         if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
 292                 return -EINVAL;
 293
 294         return 0;
 295 }
 296
 297 /* policy for the attributes */
 298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 299
 300 static const struct nla_policy
 301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 302         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 303         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 304                                         .len = U8_MAX },
 305         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 306                                              .len = U8_MAX },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 312         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 313         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 314                 NLA_POLICY_MAX(NLA_U8, 15),
 315         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 316         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 317                 NLA_POLICY_MAX(NLA_U8, 15),
 318         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 319                 NLA_POLICY_MAX(NLA_U8, 31),
 320         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 321         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 322         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 323         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 324         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 325         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 326 };
 327
 328 static const struct nla_policy
 329 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 330         [NL80211_PMSR_TYPE_FTM] =
 331                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 336         [NL80211_PMSR_REQ_ATTR_DATA] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 338         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 344         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 345         [NL80211_PMSR_PEER_ATTR_REQ] =
 346                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 347         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 348 };
 349
 350 static const struct nla_policy
 351 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 352         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 353         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_PEERS] =
 357                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 358 };
 359
 360 static const struct nla_policy
 361 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 362         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 363                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 364         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 365                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 366         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 367                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 368         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 369                 NLA_POLICY_EXACT_LEN(8),
 370         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 371                 NLA_POLICY_EXACT_LEN(8),
 372         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 373 };
 374
 375 static const struct nla_policy
 376 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 377         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 378         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 379         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 380 };
 381
 382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 383         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 384                                     .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 386                                 .len = NL80211_MAX_SUPP_HT_RATES },
 387         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 388         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 389         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 390         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 391                                                    NL80211_RATE_INFO_HE_GI_0_8,
 392                                                    NL80211_RATE_INFO_HE_GI_3_2),
 393         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 394                                                    NL80211_RATE_INFO_HE_1XLTF,
 395                                                    NL80211_RATE_INFO_HE_4XLTF),
 396 };
 397
 398 static const struct nla_policy
 399 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 400         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 401         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 403         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 404         [NL80211_TID_CONFIG_ATTR_NOACK] =
 405                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 406         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 409                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 410         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 411                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 412         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 413                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 414         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 415                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 416         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 417                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 418 };
 419
 420 static const struct nla_policy
 421 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 422         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 425                         NLA_POLICY_RANGE(NLA_BINARY,
 426                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 427                                          IEEE80211_MAX_DATA_LEN),
 428 };
 429
 430 static const struct nla_policy
 431 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 432         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 434                                                        .len = IEEE80211_MAX_DATA_LEN }
 435 };
 436
 437 static const struct nla_policy
 438 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 439         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 440         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 441 };
 442
 443 static const struct nla_policy
 444 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 445         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 446         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 447 };
 448
 449 static const struct nla_policy
 450 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 451         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 453                                                 NLA_POLICY_MIN(NLA_U8, 1),
 454         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 455         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 456         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 457 };
 458
 459 static const struct nla_policy
 460 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 461         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 462         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 463 };
 464
 465 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 466         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 467         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 468         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 469                                       .len = 20-1 },
 470         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 471
 472         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 473         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 475                                                 NL80211_EDMG_CHANNELS_MIN,
 476                                                 NL80211_EDMG_CHANNELS_MAX),
 477         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 478                                                 NL80211_EDMG_BW_CONFIG_MIN,
 479                                                 NL80211_EDMG_BW_CONFIG_MAX),
 480
 481         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 482         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 483         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 484         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 485
 486         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 487         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 488         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 489         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 490         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 491         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 492
 493         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 494         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 495         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 496
 497         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 498         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 499
 500         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 501         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 502                                     .len = WLAN_MAX_KEY_LEN },
 503         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 504         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 505         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 507         [NL80211_ATTR_KEY_TYPE] =
 508                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 509
 510         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 511         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 512         [NL80211_ATTR_BEACON_HEAD] =
 513                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 514                                        IEEE80211_MAX_DATA_LEN),
 515         [NL80211_ATTR_BEACON_TAIL] =
 516                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 517                                        IEEE80211_MAX_DATA_LEN),
 518         [NL80211_ATTR_STA_AID] =
 519                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 520         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 521         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 522         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 523                                                .len = NL80211_MAX_SUPP_RATES },
 524         [NL80211_ATTR_STA_PLINK_ACTION] =
 525                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 526         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 527                 NLA_POLICY_RANGE(NLA_U8,
 528                                  NL80211_TX_POWER_AUTOMATIC,
 529                                  NL80211_TX_POWER_FIXED),
 530         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 531         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 532         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 533         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 534                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 535         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 536
 537         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 538         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 539         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 540
 541         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 542         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 543         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 544         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 545                                            .len = NL80211_MAX_SUPP_RATES },
 546         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 547
 548         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 549         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 550
 551         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 552
 553         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 554         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 555                                                    validate_ie_attr,
 556                                                    IEEE80211_MAX_DATA_LEN),
 557         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 558         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 559
 560         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 561                                 .len = IEEE80211_MAX_SSID_LEN },
 562         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 563         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 564         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 565         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 567                                                   NL80211_MFP_NO,
 568                                                   NL80211_MFP_OPTIONAL),
 569         [NL80211_ATTR_STA_FLAGS2] =
 570                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 571         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 573         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 577         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 578         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 579         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 580         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 581         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 582         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 583         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 584         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 585         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 586                                  .len = IEEE80211_MAX_DATA_LEN },
 587         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 588         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 589                                                    NL80211_PS_DISABLED,
 590                                                    NL80211_PS_ENABLED),
 591         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 592         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 593         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 594         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 595         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 596         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 597         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 598         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 599         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 600         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 601         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 602         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 603         [NL80211_ATTR_STA_PLINK_STATE] =
 604                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 605         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 606         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_MESH_PEER_AID] =
 608                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 609         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 610         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 611         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 612         [NL80211_ATTR_HIDDEN_SSID] =
 613                 NLA_POLICY_RANGE(NLA_U32,
 614                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 615                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 616         [NL80211_ATTR_IE_PROBE_RESP] =
 617                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 618                                        IEEE80211_MAX_DATA_LEN),
 619         [NL80211_ATTR_IE_ASSOC_RESP] =
 620                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 621                                        IEEE80211_MAX_DATA_LEN),
 622         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 623         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 624         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 625         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 626         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 627         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 628         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 629         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 630         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 633         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 634                                       .len = IEEE80211_MAX_DATA_LEN },
 635         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 636         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 638                 .len = NL80211_HT_CAPABILITY_LEN
 639         },
 640         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 641         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 642         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 643         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 644         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 645
 646         /* need to include at least Auth Transaction and Status Code */
 647         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 648
 649         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 650         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 651         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 652         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 653         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 654                 NLA_POLICY_RANGE(NLA_U32,
 655                                  NL80211_MESH_POWER_UNKNOWN + 1,
 656                                  NL80211_MESH_POWER_MAX),
 657         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 658         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 659         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 660         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 661         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 662         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 663         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 664                 .len = NL80211_VHT_CAPABILITY_LEN,
 665         },
 666         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 667         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 668                                   .len = IEEE80211_MAX_DATA_LEN },
 669         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 670         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 671                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 672         [NL80211_ATTR_PEER_AID] =
 673                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 674         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 675         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 676         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 677         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 678         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 679         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 680         /*
 681          * The value of the Length field of the Supported Operating
 682          * Classes element is between 2 and 253.
 683          */
 684         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 685                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 686         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 687         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 688         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 689         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 690         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 691         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 692                                                   IEEE80211_QOS_MAP_LEN_MIN,
 693                                                   IEEE80211_QOS_MAP_LEN_MAX),
 694         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 695         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 696         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 697         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 698         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 699         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 700         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 701         [NL80211_ATTR_USER_PRIO] =
 702                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 703         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 704         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 705         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 706         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 707         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 708         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 709         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 710         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 711         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 712         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 713         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 714                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 715         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 716                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 717         },
 718         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 719         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 720         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 721         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 722         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 723                                     .len = FILS_MAX_KEK_LEN },
 724         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 725         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 726         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 727         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 728         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 729                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 730         },
 731         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 732         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 733                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 734         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 735                                           .len = FILS_ERP_MAX_REALM_LEN },
 736         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 737         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 738                                         .len = FILS_ERP_MAX_RRK_LEN },
 739         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 740         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 741         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 742         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 743         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 744
 745         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 746         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 747         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 748         [NL80211_ATTR_HE_CAPABILITY] =
 749                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 750                                        NL80211_HE_MAX_CAPABILITY_LEN),
 751         [NL80211_ATTR_FTM_RESPONDER] =
 752                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 753         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 754         [NL80211_ATTR_PEER_MEASUREMENTS] =
 755                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 756         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 757         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 758                                         .len = SAE_PASSWORD_MAX_LEN },
 759         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 760         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 761         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 762         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 763         [NL80211_ATTR_TID_CONFIG] =
 764                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 765         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 767         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 768         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 769         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 770         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 771         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 772                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 773         [NL80211_ATTR_FILS_DISCOVERY] =
 774                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 775         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 776                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 777         [NL80211_ATTR_S1G_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 779         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 780                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 781         [NL80211_ATTR_SAE_PWE] =
 782                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 783                                  NL80211_SAE_PWE_BOTH),
 784         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 785         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 786         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 787         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 788         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 789         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 790         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 791         [NL80211_ATTR_MBSSID_CONFIG] =
 792                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 793         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 794         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 795         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 796         [NL80211_ATTR_EHT_CAPABILITY] =
 797                 NLA_POLICY_RANGE(NLA_BINARY,
 798                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 799                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 800         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_MLO_LINKS] =
 802                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 803         [NL80211_ATTR_MLO_LINK_ID] =
 804                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 805         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 806         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 808 };
 809
 810 /* policy for the key attributes */
 811 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 812         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 813         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 814         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 815         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 816         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 817         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 818         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 819         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 820         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 821 };
 822
 823 /* policy for the key default flags */
 824 static const struct nla_policy
 825 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 826         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 827         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 828 };
 829
 830 #ifdef CONFIG_PM
 831 /* policy for WoWLAN attributes */
 832 static const struct nla_policy
 833 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 834         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 835         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 836         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 837         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 838         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 839         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 840         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 841         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 842         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 843         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 844 };
 845
 846 static const struct nla_policy
 847 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 848         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 849         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 850         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 851         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 852         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 853         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 854         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 855                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 856         },
 857         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 858                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 859         },
 860         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 861         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 862         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 863 };
 864 #endif /* CONFIG_PM */
 865
 866 /* policy for coalesce rule attributes */
 867 static const struct nla_policy
 868 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 869         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 870         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 871                 NLA_POLICY_RANGE(NLA_U32,
 872                                  NL80211_COALESCE_CONDITION_MATCH,
 873                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 874         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 875 };
 876
 877 /* policy for GTK rekey offload attributes */
 878 static const struct nla_policy
 879 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 880         [NL80211_REKEY_DATA_KEK] = {
 881                 .type = NLA_BINARY,
 882                 .len = NL80211_KEK_EXT_LEN
 883         },
 884         [NL80211_REKEY_DATA_KCK] = {
 885                 .type = NLA_BINARY,
 886                 .len = NL80211_KCK_EXT_LEN
 887         },
 888         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 889         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 890 };
 891
 892 static const struct nla_policy
 893 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 894         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 895         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 896         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 897         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 898         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 899 };
 900
 901 static const struct nla_policy
 902 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 903         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 904                                                  .len = IEEE80211_MAX_SSID_LEN },
 905         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 906         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 907         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 908                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 909 };
 910
 911 static const struct nla_policy
 912 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 913         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 914         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 915 };
 916
 917 static const struct nla_policy
 918 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 919         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 920         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 921         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 922                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 923         },
 924 };
 925
 926 /* policy for NAN function attributes */
 927 static const struct nla_policy
 928 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 929         [NL80211_NAN_FUNC_TYPE] =
 930                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 931         [NL80211_NAN_FUNC_SERVICE_ID] = {
 932                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 933         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 934         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 935         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 936         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 937         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 938         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 939         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 940         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 941         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 942                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 943         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 944         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 945         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 946         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 947         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 948 };
 949
 950 /* policy for Service Response Filter attributes */
 951 static const struct nla_policy
 952 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 953         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 954         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 955                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 956         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 957         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 958 };
 959
 960 /* policy for packet pattern attributes */
 961 static const struct nla_policy
 962 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 963         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 964         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 965         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 966 };
 967
 968 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 969                                      struct cfg80211_registered_device **rdev,
 970                                      struct wireless_dev **wdev,
 971                                      struct nlattr **attrbuf)
 972 {
 973         int err;
 974
 975         if (!cb->args[0]) {
 976                 struct nlattr **attrbuf_free = NULL;
 977
 978                 if (!attrbuf) {
 979                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 980                                           GFP_KERNEL);
 981                         if (!attrbuf)
 982                                 return -ENOMEM;
 983                         attrbuf_free = attrbuf;
 984                 }
 985
 986                 err = nlmsg_parse_deprecated(cb->nlh,
 987                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 988                                              attrbuf, nl80211_fam.maxattr,
 989                                              nl80211_policy, NULL);
 990                 if (err) {
 991                         kfree(attrbuf_free);
 992                         return err;
 993                 }
 994
 995                 rtnl_lock();
 996                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 997                                                    attrbuf);
 998                 kfree(attrbuf_free);
 999                 if (IS_ERR(*wdev)) {
1000                         rtnl_unlock();
1001                         return PTR_ERR(*wdev);
1002                 }
1003                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1004                 mutex_lock(&(*rdev)->wiphy.mtx);
1005                 rtnl_unlock();
1006                 /* 0 is the first index - add 1 to parse only once */
1007                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1008                 cb->args[1] = (*wdev)->identifier;
1009         } else {
1010                 /* subtract the 1 again here */
1011                 struct wiphy *wiphy;
1012                 struct wireless_dev *tmp;
1013
1014                 rtnl_lock();
1015                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1016                 if (!wiphy) {
1017                         rtnl_unlock();
1018                         return -ENODEV;
1019                 }
1020                 *rdev = wiphy_to_rdev(wiphy);
1021                 *wdev = NULL;
1022
1023                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1024                         if (tmp->identifier == cb->args[1]) {
1025                                 *wdev = tmp;
1026                                 break;
1027                         }
1028                 }
1029
1030                 if (!*wdev) {
1031                         rtnl_unlock();
1032                         return -ENODEV;
1033                 }
1034                 mutex_lock(&(*rdev)->wiphy.mtx);
1035                 rtnl_unlock();
1036         }
1037
1038         return 0;
1039 }
1040
1041 /* message building helper */
1042 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1043                      int flags, u8 cmd)
1044 {
1045         /* since there is no private header just add the generic one */
1046         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1047 }
1048
1049 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1050                                      const struct ieee80211_reg_rule *rule)
1051 {
1052         int j;
1053         struct nlattr *nl_wmm_rules =
1054                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1055
1056         if (!nl_wmm_rules)
1057                 goto nla_put_failure;
1058
1059         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1060                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1061
1062                 if (!nl_wmm_rule)
1063                         goto nla_put_failure;
1064
1065                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1066                                 rule->wmm_rule.client[j].cw_min) ||
1067                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1068                                 rule->wmm_rule.client[j].cw_max) ||
1069                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1070                                rule->wmm_rule.client[j].aifsn) ||
1071                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1072                                 rule->wmm_rule.client[j].cot))
1073                         goto nla_put_failure;
1074
1075                 nla_nest_end(msg, nl_wmm_rule);
1076         }
1077         nla_nest_end(msg, nl_wmm_rules);
1078
1079         return 0;
1080
1081 nla_put_failure:
1082         return -ENOBUFS;
1083 }
1084
1085 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1086                                    struct ieee80211_channel *chan,
1087                                    bool large)
1088 {
1089         /* Some channels must be completely excluded from the
1090          * list to protect old user-space tools from breaking
1091          */
1092         if (!large && chan->flags &
1093             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1094                 return 0;
1095         if (!large && chan->freq_offset)
1096                 return 0;
1097
1098         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1099                         chan->center_freq))
1100                 goto nla_put_failure;
1101
1102         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1103                 goto nla_put_failure;
1104
1105         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1106             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1107                 goto nla_put_failure;
1108         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1109                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1110                         goto nla_put_failure;
1111                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1112                         goto nla_put_failure;
1113         }
1114         if (chan->flags & IEEE80211_CHAN_RADAR) {
1115                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1116                         goto nla_put_failure;
1117                 if (large) {
1118                         u32 time;
1119
1120                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1121
1122                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1123                                         chan->dfs_state))
1124                                 goto nla_put_failure;
1125                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1126                                         time))
1127                                 goto nla_put_failure;
1128                         if (nla_put_u32(msg,
1129                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1130                                         chan->dfs_cac_ms))
1131                                 goto nla_put_failure;
1132                 }
1133         }
1134
1135         if (large) {
1136                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1137                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1138                         goto nla_put_failure;
1139                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1140                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1141                         goto nla_put_failure;
1142                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1143                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1144                         goto nla_put_failure;
1145                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1146                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1147                         goto nla_put_failure;
1148                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1149                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1150                         goto nla_put_failure;
1151                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1152                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1153                         goto nla_put_failure;
1154                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1155                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1156                         goto nla_put_failure;
1157                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1158                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1159                         goto nla_put_failure;
1160                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1161                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1162                         goto nla_put_failure;
1163                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1164                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1165                         goto nla_put_failure;
1166                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1167                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1168                         goto nla_put_failure;
1169                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1170                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1171                         goto nla_put_failure;
1172                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1173                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1174                         goto nla_put_failure;
1175                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1176                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1177                         goto nla_put_failure;
1178                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1179                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1180                         goto nla_put_failure;
1181                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1182                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1183                         goto nla_put_failure;
1184         }
1185
1186         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1187                         DBM_TO_MBM(chan->max_power)))
1188                 goto nla_put_failure;
1189
1190         if (large) {
1191                 const struct ieee80211_reg_rule *rule =
1192                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1193
1194                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1195                         if (nl80211_msg_put_wmm_rules(msg, rule))
1196                                 goto nla_put_failure;
1197                 }
1198         }
1199
1200         return 0;
1201
1202  nla_put_failure:
1203         return -ENOBUFS;
1204 }
1205
1206 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1207                                   struct cfg80211_txq_stats *txqstats,
1208                                   int attrtype)
1209 {
1210         struct nlattr *txqattr;
1211
1212 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1213         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1214             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1215                 return false;                                             \
1216         } while (0)
1217
1218         txqattr = nla_nest_start_noflag(msg, attrtype);
1219         if (!txqattr)
1220                 return false;
1221
1222         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1223         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1224         PUT_TXQVAL_U32(FLOWS, flows);
1225         PUT_TXQVAL_U32(DROPS, drops);
1226         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1227         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1228         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1229         PUT_TXQVAL_U32(COLLISIONS, collisions);
1230         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1231         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1232         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1233         nla_nest_end(msg, txqattr);
1234
1235 #undef PUT_TXQVAL_U32
1236         return true;
1237 }
1238
1239 /* netlink command implementations */
1240
1241 /**
1242  * nl80211_link_id - return link ID
1243  * @attrs: attributes to look at
1244  *
1245  * Returns: the link ID or 0 if not given
1246  *
1247  * Note this function doesn't do any validation of the link
1248  * ID validity wrt. links that were actually added, so it must
1249  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1250  * or if additional validation is done.
1251  */
1252 static unsigned int nl80211_link_id(struct nlattr **attrs)
1253 {
1254         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1255
1256         if (!linkid)
1257                 return 0;
1258
1259         return nla_get_u8(linkid);
1260 }
1261
1262 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1263 {
1264         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1265
1266         if (!linkid)
1267                 return -1;
1268
1269         return nla_get_u8(linkid);
1270 }
1271
1272 struct key_parse {
1273         struct key_params p;
1274         int idx;
1275         int type;
1276         bool def, defmgmt, defbeacon;
1277         bool def_uni, def_multi;
1278 };
1279
1280 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1281                                  struct key_parse *k)
1282 {
1283         struct nlattr *tb[NL80211_KEY_MAX + 1];
1284         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1285                                               nl80211_key_policy,
1286                                               info->extack);
1287         if (err)
1288                 return err;
1289
1290         k->def = !!tb[NL80211_KEY_DEFAULT];
1291         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1292         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1293
1294         if (k->def) {
1295                 k->def_uni = true;
1296                 k->def_multi = true;
1297         }
1298         if (k->defmgmt || k->defbeacon)
1299                 k->def_multi = true;
1300
1301         if (tb[NL80211_KEY_IDX])
1302                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1303
1304         if (tb[NL80211_KEY_DATA]) {
1305                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1306                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1307         }
1308
1309         if (tb[NL80211_KEY_SEQ]) {
1310                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1311                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1312         }
1313
1314         if (tb[NL80211_KEY_CIPHER])
1315                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1316
1317         if (tb[NL80211_KEY_TYPE])
1318                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1319
1320         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1321                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1322
1323                 err = nla_parse_nested_deprecated(kdt,
1324                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1325                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1326                                                   nl80211_key_default_policy,
1327                                                   info->extack);
1328                 if (err)
1329                         return err;
1330
1331                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1332                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1333         }
1334
1335         if (tb[NL80211_KEY_MODE])
1336                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1337
1338         return 0;
1339 }
1340
1341 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1342 {
1343         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1344                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1345                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1346         }
1347
1348         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1349                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1350                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1351         }
1352
1353         if (info->attrs[NL80211_ATTR_KEY_IDX])
1354                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1355
1356         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1357                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1358
1359         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1360         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1361
1362         if (k->def) {
1363                 k->def_uni = true;
1364                 k->def_multi = true;
1365         }
1366         if (k->defmgmt)
1367                 k->def_multi = true;
1368
1369         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1370                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1371
1372         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1373                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1374                 int err = nla_parse_nested_deprecated(kdt,
1375                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1376                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1377                                                       nl80211_key_default_policy,
1378                                                       info->extack);
1379                 if (err)
1380                         return err;
1381
1382                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1383                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1384         }
1385
1386         return 0;
1387 }
1388
1389 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1390 {
1391         int err;
1392
1393         memset(k, 0, sizeof(*k));
1394         k->idx = -1;
1395         k->type = -1;
1396
1397         if (info->attrs[NL80211_ATTR_KEY])
1398                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1399         else
1400                 err = nl80211_parse_key_old(info, k);
1401
1402         if (err)
1403                 return err;
1404
1405         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1406             (k->defbeacon ? 1 : 0) > 1) {
1407                 GENL_SET_ERR_MSG(info,
1408                                  "key with multiple default flags is invalid");
1409                 return -EINVAL;
1410         }
1411
1412         if (k->defmgmt || k->defbeacon) {
1413                 if (k->def_uni || !k->def_multi) {
1414                         GENL_SET_ERR_MSG(info,
1415                                          "defmgmt/defbeacon key must be mcast");
1416                         return -EINVAL;
1417                 }
1418         }
1419
1420         if (k->idx != -1) {
1421                 if (k->defmgmt) {
1422                         if (k->idx < 4 || k->idx > 5) {
1423                                 GENL_SET_ERR_MSG(info,
1424                                                  "defmgmt key idx not 4 or 5");
1425                                 return -EINVAL;
1426                         }
1427                 } else if (k->defbeacon) {
1428                         if (k->idx < 6 || k->idx > 7) {
1429                                 GENL_SET_ERR_MSG(info,
1430                                                  "defbeacon key idx not 6 or 7");
1431                                 return -EINVAL;
1432                         }
1433                 } else if (k->def) {
1434                         if (k->idx < 0 || k->idx > 3) {
1435                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1436                                 return -EINVAL;
1437                         }
1438                 } else {
1439                         if (k->idx < 0 || k->idx > 7) {
1440                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1441                                 return -EINVAL;
1442                         }
1443                 }
1444         }
1445
1446         return 0;
1447 }
1448
1449 static struct cfg80211_cached_keys *
1450 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1451                        struct genl_info *info, bool *no_ht)
1452 {
1453         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1454         struct key_parse parse;
1455         struct nlattr *key;
1456         struct cfg80211_cached_keys *result;
1457         int rem, err, def = 0;
1458         bool have_key = false;
1459
1460         nla_for_each_nested(key, keys, rem) {
1461                 have_key = true;
1462                 break;
1463         }
1464
1465         if (!have_key)
1466                 return NULL;
1467
1468         result = kzalloc(sizeof(*result), GFP_KERNEL);
1469         if (!result)
1470                 return ERR_PTR(-ENOMEM);
1471
1472         result->def = -1;
1473
1474         nla_for_each_nested(key, keys, rem) {
1475                 memset(&parse, 0, sizeof(parse));
1476                 parse.idx = -1;
1477
1478                 err = nl80211_parse_key_new(info, key, &parse);
1479                 if (err)
1480                         goto error;
1481                 err = -EINVAL;
1482                 if (!parse.p.key)
1483                         goto error;
1484                 if (parse.idx < 0 || parse.idx > 3) {
1485                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1486                         goto error;
1487                 }
1488                 if (parse.def) {
1489                         if (def) {
1490                                 GENL_SET_ERR_MSG(info,
1491                                                  "only one key can be default");
1492                                 goto error;
1493                         }
1494                         def = 1;
1495                         result->def = parse.idx;
1496                         if (!parse.def_uni || !parse.def_multi)
1497                                 goto error;
1498                 } else if (parse.defmgmt)
1499                         goto error;
1500                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1501                                                      parse.idx, false, NULL);
1502                 if (err)
1503                         goto error;
1504                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1505                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1506                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1507                         err = -EINVAL;
1508                         goto error;
1509                 }
1510                 result->params[parse.idx].cipher = parse.p.cipher;
1511                 result->params[parse.idx].key_len = parse.p.key_len;
1512                 result->params[parse.idx].key = result->data[parse.idx];
1513                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1514
1515                 /* must be WEP key if we got here */
1516                 if (no_ht)
1517                         *no_ht = true;
1518         }
1519
1520         if (result->def < 0) {
1521                 err = -EINVAL;
1522                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1523                 goto error;
1524         }
1525
1526         return result;
1527  error:
1528         kfree(result);
1529         return ERR_PTR(err);
1530 }
1531
1532 static int nl80211_key_allowed(struct wireless_dev *wdev)
1533 {
1534         ASSERT_WDEV_LOCK(wdev);
1535
1536         switch (wdev->iftype) {
1537         case NL80211_IFTYPE_AP:
1538         case NL80211_IFTYPE_AP_VLAN:
1539         case NL80211_IFTYPE_P2P_GO:
1540         case NL80211_IFTYPE_MESH_POINT:
1541                 break;
1542         case NL80211_IFTYPE_ADHOC:
1543                 if (wdev->u.ibss.current_bss)
1544                         return 0;
1545                 return -ENOLINK;
1546         case NL80211_IFTYPE_STATION:
1547         case NL80211_IFTYPE_P2P_CLIENT:
1548                 if (wdev->connected)
1549                         return 0;
1550                 return -ENOLINK;
1551         case NL80211_IFTYPE_UNSPECIFIED:
1552         case NL80211_IFTYPE_OCB:
1553         case NL80211_IFTYPE_MONITOR:
1554         case NL80211_IFTYPE_NAN:
1555         case NL80211_IFTYPE_P2P_DEVICE:
1556         case NL80211_IFTYPE_WDS:
1557         case NUM_NL80211_IFTYPES:
1558                 return -EINVAL;
1559         }
1560
1561         return 0;
1562 }
1563
1564 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1565                                                         u32 freq)
1566 {
1567         struct ieee80211_channel *chan;
1568
1569         chan = ieee80211_get_channel_khz(wiphy, freq);
1570         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1571                 return NULL;
1572         return chan;
1573 }
1574
1575 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1576 {
1577         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1578         int i;
1579
1580         if (!nl_modes)
1581                 goto nla_put_failure;
1582
1583         i = 0;
1584         while (ifmodes) {
1585                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1586                         goto nla_put_failure;
1587                 ifmodes >>= 1;
1588                 i++;
1589         }
1590
1591         nla_nest_end(msg, nl_modes);
1592         return 0;
1593
1594 nla_put_failure:
1595         return -ENOBUFS;
1596 }
1597
1598 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1599                                           struct sk_buff *msg,
1600                                           bool large)
1601 {
1602         struct nlattr *nl_combis;
1603         int i, j;
1604
1605         nl_combis = nla_nest_start_noflag(msg,
1606                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1607         if (!nl_combis)
1608                 goto nla_put_failure;
1609
1610         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1611                 const struct ieee80211_iface_combination *c;
1612                 struct nlattr *nl_combi, *nl_limits;
1613
1614                 c = &wiphy->iface_combinations[i];
1615
1616                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1617                 if (!nl_combi)
1618                         goto nla_put_failure;
1619
1620                 nl_limits = nla_nest_start_noflag(msg,
1621                                                   NL80211_IFACE_COMB_LIMITS);
1622                 if (!nl_limits)
1623                         goto nla_put_failure;
1624
1625                 for (j = 0; j < c->n_limits; j++) {
1626                         struct nlattr *nl_limit;
1627
1628                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1629                         if (!nl_limit)
1630                                 goto nla_put_failure;
1631                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1632                                         c->limits[j].max))
1633                                 goto nla_put_failure;
1634                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1635                                                 c->limits[j].types))
1636                                 goto nla_put_failure;
1637                         nla_nest_end(msg, nl_limit);
1638                 }
1639
1640                 nla_nest_end(msg, nl_limits);
1641
1642                 if (c->beacon_int_infra_match &&
1643                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1644                         goto nla_put_failure;
1645                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1646                                 c->num_different_channels) ||
1647                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1648                                 c->max_interfaces))
1649                         goto nla_put_failure;
1650                 if (large &&
1651                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1652                                 c->radar_detect_widths) ||
1653                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1654                                 c->radar_detect_regions)))
1655                         goto nla_put_failure;
1656                 if (c->beacon_int_min_gcd &&
1657                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1658                                 c->beacon_int_min_gcd))
1659                         goto nla_put_failure;
1660
1661                 nla_nest_end(msg, nl_combi);
1662         }
1663
1664         nla_nest_end(msg, nl_combis);
1665
1666         return 0;
1667 nla_put_failure:
1668         return -ENOBUFS;
1669 }
1670
1671 #ifdef CONFIG_PM
1672 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1673                                         struct sk_buff *msg)
1674 {
1675         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1676         struct nlattr *nl_tcp;
1677
1678         if (!tcp)
1679                 return 0;
1680
1681         nl_tcp = nla_nest_start_noflag(msg,
1682                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1683         if (!nl_tcp)
1684                 return -ENOBUFS;
1685
1686         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1687                         tcp->data_payload_max))
1688                 return -ENOBUFS;
1689
1690         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1691                         tcp->data_payload_max))
1692                 return -ENOBUFS;
1693
1694         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1695                 return -ENOBUFS;
1696
1697         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1698                                 sizeof(*tcp->tok), tcp->tok))
1699                 return -ENOBUFS;
1700
1701         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1702                         tcp->data_interval_max))
1703                 return -ENOBUFS;
1704
1705         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1706                         tcp->wake_payload_max))
1707                 return -ENOBUFS;
1708
1709         nla_nest_end(msg, nl_tcp);
1710         return 0;
1711 }
1712
1713 static int nl80211_send_wowlan(struct sk_buff *msg,
1714                                struct cfg80211_registered_device *rdev,
1715                                bool large)
1716 {
1717         struct nlattr *nl_wowlan;
1718
1719         if (!rdev->wiphy.wowlan)
1720                 return 0;
1721
1722         nl_wowlan = nla_nest_start_noflag(msg,
1723                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1724         if (!nl_wowlan)
1725                 return -ENOBUFS;
1726
1727         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1728              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1729             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1730              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1731             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1732              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1733             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1734              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1735             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1736              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1737             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1738              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1739             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1740              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1741             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1742              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1743                 return -ENOBUFS;
1744
1745         if (rdev->wiphy.wowlan->n_patterns) {
1746                 struct nl80211_pattern_support pat = {
1747                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1748                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1749                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1750                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1751                 };
1752
1753                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1754                             sizeof(pat), &pat))
1755                         return -ENOBUFS;
1756         }
1757
1758         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1759             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1760                         rdev->wiphy.wowlan->max_nd_match_sets))
1761                 return -ENOBUFS;
1762
1763         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1764                 return -ENOBUFS;
1765
1766         nla_nest_end(msg, nl_wowlan);
1767
1768         return 0;
1769 }
1770 #endif
1771
1772 static int nl80211_send_coalesce(struct sk_buff *msg,
1773                                  struct cfg80211_registered_device *rdev)
1774 {
1775         struct nl80211_coalesce_rule_support rule;
1776
1777         if (!rdev->wiphy.coalesce)
1778                 return 0;
1779
1780         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1781         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1782         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1783         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1784         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1785         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1786
1787         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1788                 return -ENOBUFS;
1789
1790         return 0;
1791 }
1792
1793 static int
1794 nl80211_send_iftype_data(struct sk_buff *msg,
1795                          const struct ieee80211_supported_band *sband,
1796                          const struct ieee80211_sband_iftype_data *iftdata)
1797 {
1798         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1799         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1800
1801         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1802                                 iftdata->types_mask))
1803                 return -ENOBUFS;
1804
1805         if (he_cap->has_he) {
1806                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1807                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1808                             he_cap->he_cap_elem.mac_cap_info) ||
1809                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1810                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1811                             he_cap->he_cap_elem.phy_cap_info) ||
1812                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1813                             sizeof(he_cap->he_mcs_nss_supp),
1814                             &he_cap->he_mcs_nss_supp) ||
1815                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1816                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1817                         return -ENOBUFS;
1818         }
1819
1820         if (eht_cap->has_eht && he_cap->has_he) {
1821                 u8 mcs_nss_size, ppe_thresh_size;
1822                 u16 ppe_thres_hdr;
1823                 bool is_ap;
1824
1825                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1826                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1827
1828                 mcs_nss_size =
1829                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1830                                                    &eht_cap->eht_cap_elem,
1831                                                    is_ap);
1832
1833                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1834                 ppe_thresh_size =
1835                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1836                                                eht_cap->eht_cap_elem.phy_cap_info);
1837
1838                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1839                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1840                             eht_cap->eht_cap_elem.mac_cap_info) ||
1841                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1842                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1843                             eht_cap->eht_cap_elem.phy_cap_info) ||
1844                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1845                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1846                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1847                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1848                         return -ENOBUFS;
1849         }
1850
1851         if (sband->band == NL80211_BAND_6GHZ &&
1852             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1853                     sizeof(iftdata->he_6ghz_capa),
1854                     &iftdata->he_6ghz_capa))
1855                 return -ENOBUFS;
1856
1857         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1858             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1859                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1860                 return -ENOBUFS;
1861
1862         return 0;
1863 }
1864
1865 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1866                                       struct ieee80211_supported_band *sband,
1867                                       bool large)
1868 {
1869         struct nlattr *nl_rates, *nl_rate;
1870         struct ieee80211_rate *rate;
1871         int i;
1872
1873         /* add HT info */
1874         if (sband->ht_cap.ht_supported &&
1875             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1876                      sizeof(sband->ht_cap.mcs),
1877                      &sband->ht_cap.mcs) ||
1878              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1879                          sband->ht_cap.cap) ||
1880              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1881                         sband->ht_cap.ampdu_factor) ||
1882              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1883                         sband->ht_cap.ampdu_density)))
1884                 return -ENOBUFS;
1885
1886         /* add VHT info */
1887         if (sband->vht_cap.vht_supported &&
1888             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1889                      sizeof(sband->vht_cap.vht_mcs),
1890                      &sband->vht_cap.vht_mcs) ||
1891              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1892                          sband->vht_cap.cap)))
1893                 return -ENOBUFS;
1894
1895         if (large && sband->n_iftype_data) {
1896                 struct nlattr *nl_iftype_data =
1897                         nla_nest_start_noflag(msg,
1898                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1899                 int err;
1900
1901                 if (!nl_iftype_data)
1902                         return -ENOBUFS;
1903
1904                 for (i = 0; i < sband->n_iftype_data; i++) {
1905                         struct nlattr *iftdata;
1906
1907                         iftdata = nla_nest_start_noflag(msg, i + 1);
1908                         if (!iftdata)
1909                                 return -ENOBUFS;
1910
1911                         err = nl80211_send_iftype_data(msg, sband,
1912                                                        &sband->iftype_data[i]);
1913                         if (err)
1914                                 return err;
1915
1916                         nla_nest_end(msg, iftdata);
1917                 }
1918
1919                 nla_nest_end(msg, nl_iftype_data);
1920         }
1921
1922         /* add EDMG info */
1923         if (large && sband->edmg_cap.channels &&
1924             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1925                        sband->edmg_cap.channels) ||
1926             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1927                        sband->edmg_cap.bw_config)))
1928
1929                 return -ENOBUFS;
1930
1931         /* add bitrates */
1932         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1933         if (!nl_rates)
1934                 return -ENOBUFS;
1935
1936         for (i = 0; i < sband->n_bitrates; i++) {
1937                 nl_rate = nla_nest_start_noflag(msg, i);
1938                 if (!nl_rate)
1939                         return -ENOBUFS;
1940
1941                 rate = &sband->bitrates[i];
1942                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1943                                 rate->bitrate))
1944                         return -ENOBUFS;
1945                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1946                     nla_put_flag(msg,
1947                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1948                         return -ENOBUFS;
1949
1950                 nla_nest_end(msg, nl_rate);
1951         }
1952
1953         nla_nest_end(msg, nl_rates);
1954
1955         return 0;
1956 }
1957
1958 static int
1959 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1960                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1961 {
1962         u16 stypes;
1963         struct nlattr *nl_ftypes, *nl_ifs;
1964         enum nl80211_iftype ift;
1965         int i;
1966
1967         if (!mgmt_stypes)
1968                 return 0;
1969
1970         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1971         if (!nl_ifs)
1972                 return -ENOBUFS;
1973
1974         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1975                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1976                 if (!nl_ftypes)
1977                         return -ENOBUFS;
1978                 i = 0;
1979                 stypes = mgmt_stypes[ift].tx;
1980                 while (stypes) {
1981                         if ((stypes & 1) &&
1982                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1983                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1984                                 return -ENOBUFS;
1985                         stypes >>= 1;
1986                         i++;
1987                 }
1988                 nla_nest_end(msg, nl_ftypes);
1989         }
1990
1991         nla_nest_end(msg, nl_ifs);
1992
1993         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1994         if (!nl_ifs)
1995                 return -ENOBUFS;
1996
1997         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1998                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1999                 if (!nl_ftypes)
2000                         return -ENOBUFS;
2001                 i = 0;
2002                 stypes = mgmt_stypes[ift].rx;
2003                 while (stypes) {
2004                         if ((stypes & 1) &&
2005                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2006                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2007                                 return -ENOBUFS;
2008                         stypes >>= 1;
2009                         i++;
2010                 }
2011                 nla_nest_end(msg, nl_ftypes);
2012         }
2013         nla_nest_end(msg, nl_ifs);
2014
2015         return 0;
2016 }
2017
2018 #define CMD(op, n)                                                      \
2019          do {                                                           \
2020                 if (rdev->ops->op) {                                    \
2021                         i++;                                            \
2022                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2023                                 goto nla_put_failure;                   \
2024                 }                                                       \
2025         } while (0)
2026
2027 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2028                                         struct sk_buff *msg)
2029 {
2030         int i = 0;
2031
2032         /*
2033          * do *NOT* add anything into this function, new things need to be
2034          * advertised only to new versions of userspace that can deal with
2035          * the split (and they can't possibly care about new features...
2036          */
2037         CMD(add_virtual_intf, NEW_INTERFACE);
2038         CMD(change_virtual_intf, SET_INTERFACE);
2039         CMD(add_key, NEW_KEY);
2040         CMD(start_ap, START_AP);
2041         CMD(add_station, NEW_STATION);
2042         CMD(add_mpath, NEW_MPATH);
2043         CMD(update_mesh_config, SET_MESH_CONFIG);
2044         CMD(change_bss, SET_BSS);
2045         CMD(auth, AUTHENTICATE);
2046         CMD(assoc, ASSOCIATE);
2047         CMD(deauth, DEAUTHENTICATE);
2048         CMD(disassoc, DISASSOCIATE);
2049         CMD(join_ibss, JOIN_IBSS);
2050         CMD(join_mesh, JOIN_MESH);
2051         CMD(set_pmksa, SET_PMKSA);
2052         CMD(del_pmksa, DEL_PMKSA);
2053         CMD(flush_pmksa, FLUSH_PMKSA);
2054         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2055                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2056         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2057         CMD(mgmt_tx, FRAME);
2058         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2059         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2060                 i++;
2061                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2062                         goto nla_put_failure;
2063         }
2064         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2065             rdev->ops->join_mesh) {
2066                 i++;
2067                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2068                         goto nla_put_failure;
2069         }
2070         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2071                 CMD(tdls_mgmt, TDLS_MGMT);
2072                 CMD(tdls_oper, TDLS_OPER);
2073         }
2074         if (rdev->wiphy.max_sched_scan_reqs)
2075                 CMD(sched_scan_start, START_SCHED_SCAN);
2076         CMD(probe_client, PROBE_CLIENT);
2077         CMD(set_noack_map, SET_NOACK_MAP);
2078         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2079                 i++;
2080                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2081                         goto nla_put_failure;
2082         }
2083         CMD(start_p2p_device, START_P2P_DEVICE);
2084         CMD(set_mcast_rate, SET_MCAST_RATE);
2085 #ifdef CONFIG_NL80211_TESTMODE
2086         CMD(testmode_cmd, TESTMODE);
2087 #endif
2088
2089         if (rdev->ops->connect || rdev->ops->auth) {
2090                 i++;
2091                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2092                         goto nla_put_failure;
2093         }
2094
2095         if (rdev->ops->disconnect || rdev->ops->deauth) {
2096                 i++;
2097                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2098                         goto nla_put_failure;
2099         }
2100
2101         return i;
2102  nla_put_failure:
2103         return -ENOBUFS;
2104 }
2105
2106 static int
2107 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2108                            struct sk_buff *msg)
2109 {
2110         struct nlattr *ftm;
2111
2112         if (!cap->ftm.supported)
2113                 return 0;
2114
2115         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2116         if (!ftm)
2117                 return -ENOBUFS;
2118
2119         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2120                 return -ENOBUFS;
2121         if (cap->ftm.non_asap &&
2122             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2123                 return -ENOBUFS;
2124         if (cap->ftm.request_lci &&
2125             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2126                 return -ENOBUFS;
2127         if (cap->ftm.request_civicloc &&
2128             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2129                 return -ENOBUFS;
2130         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2131                         cap->ftm.preambles))
2132                 return -ENOBUFS;
2133         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2134                         cap->ftm.bandwidths))
2135                 return -ENOBUFS;
2136         if (cap->ftm.max_bursts_exponent >= 0 &&
2137             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2138                         cap->ftm.max_bursts_exponent))
2139                 return -ENOBUFS;
2140         if (cap->ftm.max_ftms_per_burst &&
2141             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2142                         cap->ftm.max_ftms_per_burst))
2143                 return -ENOBUFS;
2144         if (cap->ftm.trigger_based &&
2145             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2146                 return -ENOBUFS;
2147         if (cap->ftm.non_trigger_based &&
2148             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2149                 return -ENOBUFS;
2150
2151         nla_nest_end(msg, ftm);
2152         return 0;
2153 }
2154
2155 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2156                                   struct sk_buff *msg)
2157 {
2158         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2159         struct nlattr *pmsr, *caps;
2160
2161         if (!cap)
2162                 return 0;
2163
2164         /*
2165          * we don't need to clean up anything here since the caller
2166          * will genlmsg_cancel() if we fail
2167          */
2168
2169         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2170         if (!pmsr)
2171                 return -ENOBUFS;
2172
2173         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2174                 return -ENOBUFS;
2175
2176         if (cap->report_ap_tsf &&
2177             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2178                 return -ENOBUFS;
2179
2180         if (cap->randomize_mac_addr &&
2181             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2182                 return -ENOBUFS;
2183
2184         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2185         if (!caps)
2186                 return -ENOBUFS;
2187
2188         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2189                 return -ENOBUFS;
2190
2191         nla_nest_end(msg, caps);
2192         nla_nest_end(msg, pmsr);
2193
2194         return 0;
2195 }
2196
2197 static int
2198 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2199                               struct sk_buff *msg)
2200 {
2201         int i;
2202         struct nlattr *nested, *nested_akms;
2203         const struct wiphy_iftype_akm_suites *iftype_akms;
2204
2205         if (!rdev->wiphy.num_iftype_akm_suites ||
2206             !rdev->wiphy.iftype_akm_suites)
2207                 return 0;
2208
2209         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2210         if (!nested)
2211                 return -ENOBUFS;
2212
2213         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2214                 nested_akms = nla_nest_start(msg, i + 1);
2215                 if (!nested_akms)
2216                         return -ENOBUFS;
2217
2218                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2219
2220                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2221                                         iftype_akms->iftypes_mask))
2222                         return -ENOBUFS;
2223
2224                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2225                             sizeof(u32) * iftype_akms->n_akm_suites,
2226                             iftype_akms->akm_suites)) {
2227                         return -ENOBUFS;
2228                 }
2229                 nla_nest_end(msg, nested_akms);
2230         }
2231
2232         nla_nest_end(msg, nested);
2233
2234         return 0;
2235 }
2236
2237 static int
2238 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2239                                struct sk_buff *msg)
2240 {
2241         struct nlattr *supp;
2242
2243         if (!rdev->wiphy.tid_config_support.vif &&
2244             !rdev->wiphy.tid_config_support.peer)
2245                 return 0;
2246
2247         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2248         if (!supp)
2249                 return -ENOSPC;
2250
2251         if (rdev->wiphy.tid_config_support.vif &&
2252             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2253                               rdev->wiphy.tid_config_support.vif,
2254                               NL80211_TID_CONFIG_ATTR_PAD))
2255                 goto fail;
2256
2257         if (rdev->wiphy.tid_config_support.peer &&
2258             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2259                               rdev->wiphy.tid_config_support.peer,
2260                               NL80211_TID_CONFIG_ATTR_PAD))
2261                 goto fail;
2262
2263         /* for now we just use the same value ... makes more sense */
2264         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2265                        rdev->wiphy.tid_config_support.max_retry))
2266                 goto fail;
2267         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2268                        rdev->wiphy.tid_config_support.max_retry))
2269                 goto fail;
2270
2271         nla_nest_end(msg, supp);
2272
2273         return 0;
2274 fail:
2275         nla_nest_cancel(msg, supp);
2276         return -ENOBUFS;
2277 }
2278
2279 static int
2280 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2281                       struct sk_buff *msg)
2282 {
2283         struct nlattr *sar_capa, *specs, *sub_freq_range;
2284         u8 num_freq_ranges;
2285         int i;
2286
2287         if (!rdev->wiphy.sar_capa)
2288                 return 0;
2289
2290         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2291
2292         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2293         if (!sar_capa)
2294                 return -ENOSPC;
2295
2296         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2297                 goto fail;
2298
2299         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2300         if (!specs)
2301                 goto fail;
2302
2303         /* report supported freq_ranges */
2304         for (i = 0; i < num_freq_ranges; i++) {
2305                 sub_freq_range = nla_nest_start(msg, i + 1);
2306                 if (!sub_freq_range)
2307                         goto fail;
2308
2309                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2310                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2311                         goto fail;
2312
2313                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2314                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2315                         goto fail;
2316
2317                 nla_nest_end(msg, sub_freq_range);
2318         }
2319
2320         nla_nest_end(msg, specs);
2321         nla_nest_end(msg, sar_capa);
2322
2323         return 0;
2324 fail:
2325         nla_nest_cancel(msg, sar_capa);
2326         return -ENOBUFS;
2327 }
2328
2329 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2330 {
2331         struct nlattr *config;
2332
2333         if (!wiphy->mbssid_max_interfaces)
2334                 return 0;
2335
2336         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2337         if (!config)
2338                 return -ENOBUFS;
2339
2340         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2341                        wiphy->mbssid_max_interfaces))
2342                 goto fail;
2343
2344         if (wiphy->ema_max_profile_periodicity &&
2345             nla_put_u8(msg,
2346                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2347                        wiphy->ema_max_profile_periodicity))
2348                 goto fail;
2349
2350         nla_nest_end(msg, config);
2351         return 0;
2352
2353 fail:
2354         nla_nest_cancel(msg, config);
2355         return -ENOBUFS;
2356 }
2357
2358 struct nl80211_dump_wiphy_state {
2359         s64 filter_wiphy;
2360         long start;
2361         long split_start, band_start, chan_start, capa_start;
2362         bool split;
2363 };
2364
2365 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2366                               enum nl80211_commands cmd,
2367                               struct sk_buff *msg, u32 portid, u32 seq,
2368                               int flags, struct nl80211_dump_wiphy_state *state)
2369 {
2370         void *hdr;
2371         struct nlattr *nl_bands, *nl_band;
2372         struct nlattr *nl_freqs, *nl_freq;
2373         struct nlattr *nl_cmds;
2374         enum nl80211_band band;
2375         struct ieee80211_channel *chan;
2376         int i;
2377         const struct ieee80211_txrx_stypes *mgmt_stypes =
2378                                 rdev->wiphy.mgmt_stypes;
2379         u32 features;
2380
2381         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2382         if (!hdr)
2383                 return -ENOBUFS;
2384
2385         if (WARN_ON(!state))
2386                 return -EINVAL;
2387
2388         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2389             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2390                            wiphy_name(&rdev->wiphy)) ||
2391             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2392                         cfg80211_rdev_list_generation))
2393                 goto nla_put_failure;
2394
2395         if (cmd != NL80211_CMD_NEW_WIPHY)
2396                 goto finish;
2397
2398         switch (state->split_start) {
2399         case 0:
2400                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2401                                rdev->wiphy.retry_short) ||
2402                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2403                                rdev->wiphy.retry_long) ||
2404                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2405                                 rdev->wiphy.frag_threshold) ||
2406                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2407                                 rdev->wiphy.rts_threshold) ||
2408                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2409                                rdev->wiphy.coverage_class) ||
2410                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2411                                rdev->wiphy.max_scan_ssids) ||
2412                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2413                                rdev->wiphy.max_sched_scan_ssids) ||
2414                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2415                                 rdev->wiphy.max_scan_ie_len) ||
2416                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2417                                 rdev->wiphy.max_sched_scan_ie_len) ||
2418                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2419                                rdev->wiphy.max_match_sets))
2420                         goto nla_put_failure;
2421
2422                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2423                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2424                         goto nla_put_failure;
2425                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2426                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2427                         goto nla_put_failure;
2428                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2429                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2430                         goto nla_put_failure;
2431                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2432                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2433                         goto nla_put_failure;
2434                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2435                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2436                         goto nla_put_failure;
2437                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2438                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2439                         goto nla_put_failure;
2440                 state->split_start++;
2441                 if (state->split)
2442                         break;
2443                 fallthrough;
2444         case 1:
2445                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2446                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2447                             rdev->wiphy.cipher_suites))
2448                         goto nla_put_failure;
2449
2450                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2451                                rdev->wiphy.max_num_pmkids))
2452                         goto nla_put_failure;
2453
2454                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2455                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2456                         goto nla_put_failure;
2457
2458                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2459                                 rdev->wiphy.available_antennas_tx) ||
2460                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2461                                 rdev->wiphy.available_antennas_rx))
2462                         goto nla_put_failure;
2463
2464                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2465                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2466                                 rdev->wiphy.probe_resp_offload))
2467                         goto nla_put_failure;
2468
2469                 if ((rdev->wiphy.available_antennas_tx ||
2470                      rdev->wiphy.available_antennas_rx) &&
2471                     rdev->ops->get_antenna) {
2472                         u32 tx_ant = 0, rx_ant = 0;
2473                         int res;
2474
2475                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2476                         if (!res) {
2477                                 if (nla_put_u32(msg,
2478                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2479                                                 tx_ant) ||
2480                                     nla_put_u32(msg,
2481                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2482                                                 rx_ant))
2483                                         goto nla_put_failure;
2484                         }
2485                 }
2486
2487                 state->split_start++;
2488                 if (state->split)
2489                         break;
2490                 fallthrough;
2491         case 2:
2492                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2493                                         rdev->wiphy.interface_modes))
2494                                 goto nla_put_failure;
2495                 state->split_start++;
2496                 if (state->split)
2497                         break;
2498                 fallthrough;
2499         case 3:
2500                 nl_bands = nla_nest_start_noflag(msg,
2501                                                  NL80211_ATTR_WIPHY_BANDS);
2502                 if (!nl_bands)
2503                         goto nla_put_failure;
2504
2505                 for (band = state->band_start;
2506                      band < (state->split ?
2507                                 NUM_NL80211_BANDS :
2508                                 NL80211_BAND_60GHZ + 1);
2509                      band++) {
2510                         struct ieee80211_supported_band *sband;
2511
2512                         /* omit higher bands for ancient software */
2513                         if (band > NL80211_BAND_5GHZ && !state->split)
2514                                 break;
2515
2516                         sband = rdev->wiphy.bands[band];
2517
2518                         if (!sband)
2519                                 continue;
2520
2521                         nl_band = nla_nest_start_noflag(msg, band);
2522                         if (!nl_band)
2523                                 goto nla_put_failure;
2524
2525                         switch (state->chan_start) {
2526                         case 0:
2527                                 if (nl80211_send_band_rateinfo(msg, sband,
2528                                                                state->split))
2529                                         goto nla_put_failure;
2530                                 state->chan_start++;
2531                                 if (state->split)
2532                                         break;
2533                                 fallthrough;
2534                         default:
2535                                 /* add frequencies */
2536                                 nl_freqs = nla_nest_start_noflag(msg,
2537                                                                  NL80211_BAND_ATTR_FREQS);
2538                                 if (!nl_freqs)
2539                                         goto nla_put_failure;
2540
2541                                 for (i = state->chan_start - 1;
2542                                      i < sband->n_channels;
2543                                      i++) {
2544                                         nl_freq = nla_nest_start_noflag(msg,
2545                                                                         i);
2546                                         if (!nl_freq)
2547                                                 goto nla_put_failure;
2548
2549                                         chan = &sband->channels[i];
2550
2551                                         if (nl80211_msg_put_channel(
2552                                                         msg, &rdev->wiphy, chan,
2553                                                         state->split))
2554                                                 goto nla_put_failure;
2555
2556                                         nla_nest_end(msg, nl_freq);
2557                                         if (state->split)
2558                                                 break;
2559                                 }
2560                                 if (i < sband->n_channels)
2561                                         state->chan_start = i + 2;
2562                                 else
2563                                         state->chan_start = 0;
2564                                 nla_nest_end(msg, nl_freqs);
2565                         }
2566
2567                         nla_nest_end(msg, nl_band);
2568
2569                         if (state->split) {
2570                                 /* start again here */
2571                                 if (state->chan_start)
2572                                         band--;
2573                                 break;
2574                         }
2575                 }
2576                 nla_nest_end(msg, nl_bands);
2577
2578                 if (band < NUM_NL80211_BANDS)
2579                         state->band_start = band + 1;
2580                 else
2581                         state->band_start = 0;
2582
2583                 /* if bands & channels are done, continue outside */
2584                 if (state->band_start == 0 && state->chan_start == 0)
2585                         state->split_start++;
2586                 if (state->split)
2587                         break;
2588                 fallthrough;
2589         case 4:
2590                 nl_cmds = nla_nest_start_noflag(msg,
2591                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2592                 if (!nl_cmds)
2593                         goto nla_put_failure;
2594
2595                 i = nl80211_add_commands_unsplit(rdev, msg);
2596                 if (i < 0)
2597                         goto nla_put_failure;
2598                 if (state->split) {
2599                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2600                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2601                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2602                                 CMD(channel_switch, CHANNEL_SWITCH);
2603                         CMD(set_qos_map, SET_QOS_MAP);
2604                         if (rdev->wiphy.features &
2605                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2606                                 CMD(add_tx_ts, ADD_TX_TS);
2607                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2608                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2609                         CMD(update_ft_ies, UPDATE_FT_IES);
2610                         if (rdev->wiphy.sar_capa)
2611                                 CMD(set_sar_specs, SET_SAR_SPECS);
2612                 }
2613 #undef CMD
2614
2615                 nla_nest_end(msg, nl_cmds);
2616                 state->split_start++;
2617                 if (state->split)
2618                         break;
2619                 fallthrough;
2620         case 5:
2621                 if (rdev->ops->remain_on_channel &&
2622                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2623                     nla_put_u32(msg,
2624                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2625                                 rdev->wiphy.max_remain_on_channel_duration))
2626                         goto nla_put_failure;
2627
2628                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2629                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2630                         goto nla_put_failure;
2631
2632                 state->split_start++;
2633                 if (state->split)
2634                         break;
2635                 fallthrough;
2636         case 6:
2637 #ifdef CONFIG_PM
2638                 if (nl80211_send_wowlan(msg, rdev, state->split))
2639                         goto nla_put_failure;
2640                 state->split_start++;
2641                 if (state->split)
2642                         break;
2643 #else
2644                 state->split_start++;
2645 #endif
2646                 fallthrough;
2647         case 7:
2648                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2649                                         rdev->wiphy.software_iftypes))
2650                         goto nla_put_failure;
2651
2652                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2653                                                    state->split))
2654                         goto nla_put_failure;
2655
2656                 state->split_start++;
2657                 if (state->split)
2658                         break;
2659                 fallthrough;
2660         case 8:
2661                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2662                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2663                                 rdev->wiphy.ap_sme_capa))
2664                         goto nla_put_failure;
2665
2666                 features = rdev->wiphy.features;
2667                 /*
2668                  * We can only add the per-channel limit information if the
2669                  * dump is split, otherwise it makes it too big. Therefore
2670                  * only advertise it in that case.
2671                  */
2672                 if (state->split)
2673                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2674                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2675                         goto nla_put_failure;
2676
2677                 if (rdev->wiphy.ht_capa_mod_mask &&
2678                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2679                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2680                             rdev->wiphy.ht_capa_mod_mask))
2681                         goto nla_put_failure;
2682
2683                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2684                     rdev->wiphy.max_acl_mac_addrs &&
2685                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2686                                 rdev->wiphy.max_acl_mac_addrs))
2687                         goto nla_put_failure;
2688
2689                 /*
2690                  * Any information below this point is only available to
2691                  * applications that can deal with it being split. This
2692                  * helps ensure that newly added capabilities don't break
2693                  * older tools by overrunning their buffers.
2694                  *
2695                  * We still increment split_start so that in the split
2696                  * case we'll continue with more data in the next round,
2697                  * but break unconditionally so unsplit data stops here.
2698                  */
2699                 if (state->split)
2700                         state->split_start++;
2701                 else
2702                         state->split_start = 0;
2703                 break;
2704         case 9:
2705                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2706                         goto nla_put_failure;
2707
2708                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2709                                 rdev->wiphy.max_sched_scan_plans) ||
2710                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2711                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2712                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2713                                 rdev->wiphy.max_sched_scan_plan_iterations))
2714                         goto nla_put_failure;
2715
2716                 if (rdev->wiphy.extended_capabilities &&
2717                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2718                              rdev->wiphy.extended_capabilities_len,
2719                              rdev->wiphy.extended_capabilities) ||
2720                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2721                              rdev->wiphy.extended_capabilities_len,
2722                              rdev->wiphy.extended_capabilities_mask)))
2723                         goto nla_put_failure;
2724
2725                 if (rdev->wiphy.vht_capa_mod_mask &&
2726                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2727                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2728                             rdev->wiphy.vht_capa_mod_mask))
2729                         goto nla_put_failure;
2730
2731                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2732                             rdev->wiphy.perm_addr))
2733                         goto nla_put_failure;
2734
2735                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2736                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2737                             rdev->wiphy.addr_mask))
2738                         goto nla_put_failure;
2739
2740                 if (rdev->wiphy.n_addresses > 1) {
2741                         void *attr;
2742
2743                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2744                         if (!attr)
2745                                 goto nla_put_failure;
2746
2747                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2748                                 if (nla_put(msg, i + 1, ETH_ALEN,
2749                                             rdev->wiphy.addresses[i].addr))
2750                                         goto nla_put_failure;
2751
2752                         nla_nest_end(msg, attr);
2753                 }
2754
2755                 state->split_start++;
2756                 break;
2757         case 10:
2758                 if (nl80211_send_coalesce(msg, rdev))
2759                         goto nla_put_failure;
2760
2761                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2762                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2763                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2764                         goto nla_put_failure;
2765
2766                 if (rdev->wiphy.max_ap_assoc_sta &&
2767                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2768                                 rdev->wiphy.max_ap_assoc_sta))
2769                         goto nla_put_failure;
2770
2771                 state->split_start++;
2772                 break;
2773         case 11:
2774                 if (rdev->wiphy.n_vendor_commands) {
2775                         const struct nl80211_vendor_cmd_info *info;
2776                         struct nlattr *nested;
2777
2778                         nested = nla_nest_start_noflag(msg,
2779                                                        NL80211_ATTR_VENDOR_DATA);
2780                         if (!nested)
2781                                 goto nla_put_failure;
2782
2783                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2784                                 info = &rdev->wiphy.vendor_commands[i].info;
2785                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2786                                         goto nla_put_failure;
2787                         }
2788                         nla_nest_end(msg, nested);
2789                 }
2790
2791                 if (rdev->wiphy.n_vendor_events) {
2792                         const struct nl80211_vendor_cmd_info *info;
2793                         struct nlattr *nested;
2794
2795                         nested = nla_nest_start_noflag(msg,
2796                                                        NL80211_ATTR_VENDOR_EVENTS);
2797                         if (!nested)
2798                                 goto nla_put_failure;
2799
2800                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2801                                 info = &rdev->wiphy.vendor_events[i];
2802                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2803                                         goto nla_put_failure;
2804                         }
2805                         nla_nest_end(msg, nested);
2806                 }
2807                 state->split_start++;
2808                 break;
2809         case 12:
2810                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2811                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2812                                rdev->wiphy.max_num_csa_counters))
2813                         goto nla_put_failure;
2814
2815                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2816                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2817                         goto nla_put_failure;
2818
2819                 if (rdev->wiphy.max_sched_scan_reqs &&
2820                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2821                                 rdev->wiphy.max_sched_scan_reqs))
2822                         goto nla_put_failure;
2823
2824                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2825                             sizeof(rdev->wiphy.ext_features),
2826                             rdev->wiphy.ext_features))
2827                         goto nla_put_failure;
2828
2829                 if (rdev->wiphy.bss_select_support) {
2830                         struct nlattr *nested;
2831                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2832
2833                         nested = nla_nest_start_noflag(msg,
2834                                                        NL80211_ATTR_BSS_SELECT);
2835                         if (!nested)
2836                                 goto nla_put_failure;
2837
2838                         i = 0;
2839                         while (bss_select_support) {
2840                                 if ((bss_select_support & 1) &&
2841                                     nla_put_flag(msg, i))
2842                                         goto nla_put_failure;
2843                                 i++;
2844                                 bss_select_support >>= 1;
2845                         }
2846                         nla_nest_end(msg, nested);
2847                 }
2848
2849                 state->split_start++;
2850                 break;
2851         case 13:
2852                 if (rdev->wiphy.num_iftype_ext_capab &&
2853                     rdev->wiphy.iftype_ext_capab) {
2854                         struct nlattr *nested_ext_capab, *nested;
2855
2856                         nested = nla_nest_start_noflag(msg,
2857                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2858                         if (!nested)
2859                                 goto nla_put_failure;
2860
2861                         for (i = state->capa_start;
2862                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2863                                 const struct wiphy_iftype_ext_capab *capab;
2864
2865                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2866
2867                                 nested_ext_capab = nla_nest_start_noflag(msg,
2868                                                                          i);
2869                                 if (!nested_ext_capab ||
2870                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2871                                                 capab->iftype) ||
2872                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2873                                             capab->extended_capabilities_len,
2874                                             capab->extended_capabilities) ||
2875                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2876                                             capab->extended_capabilities_len,
2877                                             capab->extended_capabilities_mask))
2878                                         goto nla_put_failure;
2879
2880                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2881                                     (nla_put_u16(msg,
2882                                                  NL80211_ATTR_EML_CAPABILITY,
2883                                                  capab->eml_capabilities) ||
2884                                      nla_put_u16(msg,
2885                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2886                                                  capab->mld_capa_and_ops)))
2887                                         goto nla_put_failure;
2888
2889                                 nla_nest_end(msg, nested_ext_capab);
2890                                 if (state->split)
2891                                         break;
2892                         }
2893                         nla_nest_end(msg, nested);
2894                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2895                                 state->capa_start = i + 1;
2896                                 break;
2897                         }
2898                 }
2899
2900                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2901                                 rdev->wiphy.nan_supported_bands))
2902                         goto nla_put_failure;
2903
2904                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2905                                             NL80211_EXT_FEATURE_TXQS)) {
2906                         struct cfg80211_txq_stats txqstats = {};
2907                         int res;
2908
2909                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2910                         if (!res &&
2911                             !nl80211_put_txq_stats(msg, &txqstats,
2912                                                    NL80211_ATTR_TXQ_STATS))
2913                                 goto nla_put_failure;
2914
2915                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2916                                         rdev->wiphy.txq_limit))
2917                                 goto nla_put_failure;
2918                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2919                                         rdev->wiphy.txq_memory_limit))
2920                                 goto nla_put_failure;
2921                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2922                                         rdev->wiphy.txq_quantum))
2923                                 goto nla_put_failure;
2924                 }
2925
2926                 state->split_start++;
2927                 break;
2928         case 14:
2929                 if (nl80211_send_pmsr_capa(rdev, msg))
2930                         goto nla_put_failure;
2931
2932                 state->split_start++;
2933                 break;
2934         case 15:
2935                 if (rdev->wiphy.akm_suites &&
2936                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2937                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2938                             rdev->wiphy.akm_suites))
2939                         goto nla_put_failure;
2940
2941                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2942                         goto nla_put_failure;
2943
2944                 if (nl80211_put_tid_config_support(rdev, msg))
2945                         goto nla_put_failure;
2946                 state->split_start++;
2947                 break;
2948         case 16:
2949                 if (nl80211_put_sar_specs(rdev, msg))
2950                         goto nla_put_failure;
2951
2952                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2953                         goto nla_put_failure;
2954
2955                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2956                                 rdev->wiphy.max_num_akm_suites))
2957                         goto nla_put_failure;
2958
2959                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2960                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2961
2962                 /* done */
2963                 state->split_start = 0;
2964                 break;
2965         }
2966  finish:
2967         genlmsg_end(msg, hdr);
2968         return 0;
2969
2970  nla_put_failure:
2971         genlmsg_cancel(msg, hdr);
2972         return -EMSGSIZE;
2973 }
2974
2975 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2976                                     struct netlink_callback *cb,
2977                                     struct nl80211_dump_wiphy_state *state)
2978 {
2979         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2980         int ret;
2981
2982         if (!tb)
2983                 return -ENOMEM;
2984
2985         ret = nlmsg_parse_deprecated(cb->nlh,
2986                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2987                                      tb, nl80211_fam.maxattr,
2988                                      nl80211_policy, NULL);
2989         /* ignore parse errors for backward compatibility */
2990         if (ret) {
2991                 ret = 0;
2992                 goto out;
2993         }
2994
2995         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2996         if (tb[NL80211_ATTR_WIPHY])
2997                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2998         if (tb[NL80211_ATTR_WDEV])
2999                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3000         if (tb[NL80211_ATTR_IFINDEX]) {
3001                 struct net_device *netdev;
3002                 struct cfg80211_registered_device *rdev;
3003                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3004
3005                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3006                 if (!netdev) {
3007                         ret = -ENODEV;
3008                         goto out;
3009                 }
3010                 if (netdev->ieee80211_ptr) {
3011                         rdev = wiphy_to_rdev(
3012                                 netdev->ieee80211_ptr->wiphy);
3013                         state->filter_wiphy = rdev->wiphy_idx;
3014                 }
3015         }
3016
3017         ret = 0;
3018 out:
3019         kfree(tb);
3020         return ret;
3021 }
3022
3023 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3024 {
3025         int idx = 0, ret;
3026         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3027         struct cfg80211_registered_device *rdev;
3028
3029         rtnl_lock();
3030         if (!state) {
3031                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3032                 if (!state) {
3033                         rtnl_unlock();
3034                         return -ENOMEM;
3035                 }
3036                 state->filter_wiphy = -1;
3037                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3038                 if (ret) {
3039                         kfree(state);
3040                         rtnl_unlock();
3041                         return ret;
3042                 }
3043                 cb->args[0] = (long)state;
3044         }
3045
3046         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3047                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3048                         continue;
3049                 if (++idx <= state->start)
3050                         continue;
3051                 if (state->filter_wiphy != -1 &&
3052                     state->filter_wiphy != rdev->wiphy_idx)
3053                         continue;
3054                 /* attempt to fit multiple wiphy data chunks into the skb */
3055                 do {
3056                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3057                                                  skb,
3058                                                  NETLINK_CB(cb->skb).portid,
3059                                                  cb->nlh->nlmsg_seq,
3060                                                  NLM_F_MULTI, state);
3061                         if (ret < 0) {
3062                                 /*
3063                                  * If sending the wiphy data didn't fit (ENOBUFS
3064                                  * or EMSGSIZE returned), this SKB is still
3065                                  * empty (so it's not too big because another
3066                                  * wiphy dataset is already in the skb) and
3067                                  * we've not tried to adjust the dump allocation
3068                                  * yet ... then adjust the alloc size to be
3069                                  * bigger, and return 1 but with the empty skb.
3070                                  * This results in an empty message being RX'ed
3071                                  * in userspace, but that is ignored.
3072                                  *
3073                                  * We can then retry with the larger buffer.
3074                                  */
3075                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3076                                     !skb->len && !state->split &&
3077                                     cb->min_dump_alloc < 4096) {
3078                                         cb->min_dump_alloc = 4096;
3079                                         state->split_start = 0;
3080                                         rtnl_unlock();
3081                                         return 1;
3082                                 }
3083                                 idx--;
3084                                 break;
3085                         }
3086                 } while (state->split_start > 0);
3087                 break;
3088         }
3089         rtnl_unlock();
3090
3091         state->start = idx;
3092
3093         return skb->len;
3094 }
3095
3096 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3097 {
3098         kfree((void *)cb->args[0]);
3099         return 0;
3100 }
3101
3102 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3103 {
3104         struct sk_buff *msg;
3105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3106         struct nl80211_dump_wiphy_state state = {};
3107
3108         msg = nlmsg_new(4096, GFP_KERNEL);
3109         if (!msg)
3110                 return -ENOMEM;
3111
3112         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3113                                info->snd_portid, info->snd_seq, 0,
3114                                &state) < 0) {
3115                 nlmsg_free(msg);
3116                 return -ENOBUFS;
3117         }
3118
3119         return genlmsg_reply(msg, info);
3120 }
3121
3122 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3123         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3124         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3125         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3126         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3127         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3128 };
3129
3130 static int parse_txq_params(struct nlattr *tb[],
3131                             struct ieee80211_txq_params *txq_params)
3132 {
3133         u8 ac;
3134
3135         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3136             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3137             !tb[NL80211_TXQ_ATTR_AIFS])
3138                 return -EINVAL;
3139
3140         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3141         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3142         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3143         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3144         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3145
3146         if (ac >= NL80211_NUM_ACS)
3147                 return -EINVAL;
3148         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3149         return 0;
3150 }
3151
3152 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3153 {
3154         /*
3155          * You can only set the channel explicitly for some interfaces,
3156          * most have their channel managed via their respective
3157          * "establish a connection" command (connect, join, ...)
3158          *
3159          * For AP/GO and mesh mode, the channel can be set with the
3160          * channel userspace API, but is only stored and passed to the
3161          * low-level driver when the AP starts or the mesh is joined.
3162          * This is for backward compatibility, userspace can also give
3163          * the channel in the start-ap or join-mesh commands instead.
3164          *
3165          * Monitors are special as they are normally slaved to
3166          * whatever else is going on, so they have their own special
3167          * operation to set the monitor channel if possible.
3168          */
3169         return !wdev ||
3170                 wdev->iftype == NL80211_IFTYPE_AP ||
3171                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3172                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3173                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3174 }
3175
3176 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3177                           struct genl_info *info,
3178                           struct cfg80211_chan_def *chandef)
3179 {
3180         struct netlink_ext_ack *extack = info->extack;
3181         struct nlattr **attrs = info->attrs;
3182         u32 control_freq;
3183
3184         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3185                 return -EINVAL;
3186
3187         control_freq = MHZ_TO_KHZ(
3188                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3189         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3190                 control_freq +=
3191                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3192
3193         memset(chandef, 0, sizeof(*chandef));
3194         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3195         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3196         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3197         chandef->freq1_offset = control_freq % 1000;
3198         chandef->center_freq2 = 0;
3199
3200         /* Primary channel not allowed */
3201         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3202                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3203                                     "Channel is disabled");
3204                 return -EINVAL;
3205         }
3206
3207         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3208                 enum nl80211_channel_type chantype;
3209
3210                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3211
3212                 switch (chantype) {
3213                 case NL80211_CHAN_NO_HT:
3214                 case NL80211_CHAN_HT20:
3215                 case NL80211_CHAN_HT40PLUS:
3216                 case NL80211_CHAN_HT40MINUS:
3217                         cfg80211_chandef_create(chandef, chandef->chan,
3218                                                 chantype);
3219                         /* user input for center_freq is incorrect */
3220                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3221                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3222                                 NL_SET_ERR_MSG_ATTR(extack,
3223                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3224                                                     "bad center frequency 1");
3225                                 return -EINVAL;
3226                         }
3227                         /* center_freq2 must be zero */
3228                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3229                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3230                                 NL_SET_ERR_MSG_ATTR(extack,
3231                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3232                                                     "center frequency 2 can't be used");
3233                                 return -EINVAL;
3234                         }
3235                         break;
3236                 default:
3237                         NL_SET_ERR_MSG_ATTR(extack,
3238                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3239                                             "invalid channel type");
3240                         return -EINVAL;
3241                 }
3242         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3243                 chandef->width =
3244                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3245                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3246                         /* User input error for channel width doesn't match channel  */
3247                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3248                                 NL_SET_ERR_MSG_ATTR(extack,
3249                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3250                                                     "bad channel width");
3251                                 return -EINVAL;
3252                         }
3253                 }
3254                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3255                         chandef->center_freq1 =
3256                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3257                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3258                                 chandef->freq1_offset = nla_get_u32(
3259                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3260                         else
3261                                 chandef->freq1_offset = 0;
3262                 }
3263                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3264                         chandef->center_freq2 =
3265                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3266         }
3267
3268         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3269                 chandef->edmg.channels =
3270                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3271
3272                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3273                         chandef->edmg.bw_config =
3274                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3275         } else {
3276                 chandef->edmg.bw_config = 0;
3277                 chandef->edmg.channels = 0;
3278         }
3279
3280         if (!cfg80211_chandef_valid(chandef)) {
3281                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3282                 return -EINVAL;
3283         }
3284
3285         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3286                                      IEEE80211_CHAN_DISABLED)) {
3287                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3288                 return -EINVAL;
3289         }
3290
3291         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3292              chandef->width == NL80211_CHAN_WIDTH_10) &&
3293             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3294                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3295                 return -EINVAL;
3296         }
3297
3298         return 0;
3299 }
3300
3301 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3302                                  struct net_device *dev,
3303                                  struct genl_info *info,
3304                                  int _link_id)
3305 {
3306         struct cfg80211_chan_def chandef;
3307         int result;
3308         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3309         struct wireless_dev *wdev = NULL;
3310         int link_id = _link_id;
3311
3312         if (dev)
3313                 wdev = dev->ieee80211_ptr;
3314         if (!nl80211_can_set_dev_channel(wdev))
3315                 return -EOPNOTSUPP;
3316         if (wdev)
3317                 iftype = wdev->iftype;
3318
3319         if (link_id < 0) {
3320                 if (wdev && wdev->valid_links)
3321                         return -EINVAL;
3322                 link_id = 0;
3323         }
3324
3325         result = nl80211_parse_chandef(rdev, info, &chandef);
3326         if (result)
3327                 return result;
3328
3329         switch (iftype) {
3330         case NL80211_IFTYPE_AP:
3331         case NL80211_IFTYPE_P2P_GO:
3332                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3333                                                    iftype))
3334                         return -EINVAL;
3335                 if (wdev->links[link_id].ap.beacon_interval) {
3336                         struct ieee80211_channel *cur_chan;
3337
3338                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3339                             !(rdev->wiphy.features &
3340                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3341                                 return -EBUSY;
3342
3343                         /* Only allow dynamic channel width changes */
3344                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3345                         if (chandef.chan != cur_chan)
3346                                 return -EBUSY;
3347
3348                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3349                                                        &chandef);
3350                         if (result)
3351                                 return result;
3352                         wdev->links[link_id].ap.chandef = chandef;
3353                 } else {
3354                         wdev->u.ap.preset_chandef = chandef;
3355                 }
3356                 return 0;
3357         case NL80211_IFTYPE_MESH_POINT:
3358                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3359         case NL80211_IFTYPE_MONITOR:
3360                 return cfg80211_set_monitor_channel(rdev, &chandef);
3361         default:
3362                 break;
3363         }
3364
3365         return -EINVAL;
3366 }
3367
3368 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3369 {
3370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3371         int link_id = nl80211_link_id_or_invalid(info->attrs);
3372         struct net_device *netdev = info->user_ptr[1];
3373         int ret;
3374
3375         wdev_lock(netdev->ieee80211_ptr);
3376         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3377         wdev_unlock(netdev->ieee80211_ptr);
3378
3379         return ret;
3380 }
3381
3382 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3383 {
3384         struct cfg80211_registered_device *rdev = NULL;
3385         struct net_device *netdev = NULL;
3386         struct wireless_dev *wdev;
3387         int result = 0, rem_txq_params = 0;
3388         struct nlattr *nl_txq_params;
3389         u32 changed;
3390         u8 retry_short = 0, retry_long = 0;
3391         u32 frag_threshold = 0, rts_threshold = 0;
3392         u8 coverage_class = 0;
3393         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3394
3395         rtnl_lock();
3396         /*
3397          * Try to find the wiphy and netdev. Normally this
3398          * function shouldn't need the netdev, but this is
3399          * done for backward compatibility -- previously
3400          * setting the channel was done per wiphy, but now
3401          * it is per netdev. Previous userland like hostapd
3402          * also passed a netdev to set_wiphy, so that it is
3403          * possible to let that go to the right netdev!
3404          */
3405
3406         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3407                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3408
3409                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3410                 if (netdev && netdev->ieee80211_ptr)
3411                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3412                 else
3413                         netdev = NULL;
3414         }
3415
3416         if (!netdev) {
3417                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3418                                                   info->attrs);
3419                 if (IS_ERR(rdev)) {
3420                         rtnl_unlock();
3421                         return PTR_ERR(rdev);
3422                 }
3423                 wdev = NULL;
3424                 netdev = NULL;
3425                 result = 0;
3426         } else
3427                 wdev = netdev->ieee80211_ptr;
3428
3429         wiphy_lock(&rdev->wiphy);
3430
3431         /*
3432          * end workaround code, by now the rdev is available
3433          * and locked, and wdev may or may not be NULL.
3434          */
3435
3436         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3437                 result = cfg80211_dev_rename(
3438                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3439         rtnl_unlock();
3440
3441         if (result)
3442                 goto out;
3443
3444         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3445                 struct ieee80211_txq_params txq_params;
3446                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3447
3448                 if (!rdev->ops->set_txq_params) {
3449                         result = -EOPNOTSUPP;
3450                         goto out;
3451                 }
3452
3453                 if (!netdev) {
3454                         result = -EINVAL;
3455                         goto out;
3456                 }
3457
3458                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3459                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3460                         result = -EINVAL;
3461                         goto out;
3462                 }
3463
3464                 if (!netif_running(netdev)) {
3465                         result = -ENETDOWN;
3466                         goto out;
3467                 }
3468
3469                 nla_for_each_nested(nl_txq_params,
3470                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3471                                     rem_txq_params) {
3472                         result = nla_parse_nested_deprecated(tb,
3473                                                              NL80211_TXQ_ATTR_MAX,
3474                                                              nl_txq_params,
3475                                                              txq_params_policy,
3476                                                              info->extack);
3477                         if (result)
3478                                 goto out;
3479                         result = parse_txq_params(tb, &txq_params);
3480                         if (result)
3481                                 goto out;
3482
3483                         txq_params.link_id =
3484                                 nl80211_link_id_or_invalid(info->attrs);
3485
3486                         wdev_lock(netdev->ieee80211_ptr);
3487                         if (txq_params.link_id >= 0 &&
3488                             !(netdev->ieee80211_ptr->valid_links &
3489                               BIT(txq_params.link_id)))
3490                                 result = -ENOLINK;
3491                         else if (txq_params.link_id >= 0 &&
3492                                  !netdev->ieee80211_ptr->valid_links)
3493                                 result = -EINVAL;
3494                         else
3495                                 result = rdev_set_txq_params(rdev, netdev,
3496                                                              &txq_params);
3497                         wdev_unlock(netdev->ieee80211_ptr);
3498                         if (result)
3499                                 goto out;
3500                 }
3501         }
3502
3503         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3504                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3505
3506                 if (wdev) {
3507                         wdev_lock(wdev);
3508                         result = __nl80211_set_channel(
3509                                 rdev,
3510                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3511                                 info, link_id);
3512                         wdev_unlock(wdev);
3513                 } else {
3514                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3515                 }
3516
3517                 if (result)
3518                         goto out;
3519         }
3520
3521         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3522                 struct wireless_dev *txp_wdev = wdev;
3523                 enum nl80211_tx_power_setting type;
3524                 int idx, mbm = 0;
3525
3526                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3527                         txp_wdev = NULL;
3528
3529                 if (!rdev->ops->set_tx_power) {
3530                         result = -EOPNOTSUPP;
3531                         goto out;
3532                 }
3533
3534                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3535                 type = nla_get_u32(info->attrs[idx]);
3536
3537                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3538                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3539                         result = -EINVAL;
3540                         goto out;
3541                 }
3542
3543                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3544                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3545                         mbm = nla_get_u32(info->attrs[idx]);
3546                 }
3547
3548                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3549                 if (result)
3550                         goto out;
3551         }
3552
3553         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3554             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3555                 u32 tx_ant, rx_ant;
3556
3557                 if ((!rdev->wiphy.available_antennas_tx &&
3558                      !rdev->wiphy.available_antennas_rx) ||
3559                     !rdev->ops->set_antenna) {
3560                         result = -EOPNOTSUPP;
3561                         goto out;
3562                 }
3563
3564                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3565                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3566
3567                 /* reject antenna configurations which don't match the
3568                  * available antenna masks, except for the "all" mask */
3569                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3570                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3571                         result = -EINVAL;
3572                         goto out;
3573                 }
3574
3575                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3576                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3577
3578                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3579                 if (result)
3580                         goto out;
3581         }
3582
3583         changed = 0;
3584
3585         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3586                 retry_short = nla_get_u8(
3587                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3588
3589                 changed |= WIPHY_PARAM_RETRY_SHORT;
3590         }
3591
3592         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3593                 retry_long = nla_get_u8(
3594                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3595
3596                 changed |= WIPHY_PARAM_RETRY_LONG;
3597         }
3598
3599         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3600                 frag_threshold = nla_get_u32(
3601                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3602                 if (frag_threshold < 256) {
3603                         result = -EINVAL;
3604                         goto out;
3605                 }
3606
3607                 if (frag_threshold != (u32) -1) {
3608                         /*
3609                          * Fragments (apart from the last one) are required to
3610                          * have even length. Make the fragmentation code
3611                          * simpler by stripping LSB should someone try to use
3612                          * odd threshold value.
3613                          */
3614                         frag_threshold &= ~0x1;
3615                 }
3616                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3617         }
3618
3619         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3620                 rts_threshold = nla_get_u32(
3621                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3622                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3623         }
3624
3625         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3626                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3627                         result = -EINVAL;
3628                         goto out;
3629                 }
3630
3631                 coverage_class = nla_get_u8(
3632                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3633                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3634         }
3635
3636         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3637                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3638                         result = -EOPNOTSUPP;
3639                         goto out;
3640                 }
3641
3642                 changed |= WIPHY_PARAM_DYN_ACK;
3643         }
3644
3645         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3646                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3647                                              NL80211_EXT_FEATURE_TXQS)) {
3648                         result = -EOPNOTSUPP;
3649                         goto out;
3650                 }
3651                 txq_limit = nla_get_u32(
3652                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3653                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3654         }
3655
3656         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3657                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3658                                              NL80211_EXT_FEATURE_TXQS)) {
3659                         result = -EOPNOTSUPP;
3660                         goto out;
3661                 }
3662                 txq_memory_limit = nla_get_u32(
3663                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3664                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3665         }
3666
3667         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3668                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3669                                              NL80211_EXT_FEATURE_TXQS)) {
3670                         result = -EOPNOTSUPP;
3671                         goto out;
3672                 }
3673                 txq_quantum = nla_get_u32(
3674                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3675                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3676         }
3677
3678         if (changed) {
3679                 u8 old_retry_short, old_retry_long;
3680                 u32 old_frag_threshold, old_rts_threshold;
3681                 u8 old_coverage_class;
3682                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3683
3684                 if (!rdev->ops->set_wiphy_params) {
3685                         result = -EOPNOTSUPP;
3686                         goto out;
3687                 }
3688
3689                 old_retry_short = rdev->wiphy.retry_short;
3690                 old_retry_long = rdev->wiphy.retry_long;
3691                 old_frag_threshold = rdev->wiphy.frag_threshold;
3692                 old_rts_threshold = rdev->wiphy.rts_threshold;
3693                 old_coverage_class = rdev->wiphy.coverage_class;
3694                 old_txq_limit = rdev->wiphy.txq_limit;
3695                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3696                 old_txq_quantum = rdev->wiphy.txq_quantum;
3697
3698                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3699                         rdev->wiphy.retry_short = retry_short;
3700                 if (changed & WIPHY_PARAM_RETRY_LONG)
3701                         rdev->wiphy.retry_long = retry_long;
3702                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3703                         rdev->wiphy.frag_threshold = frag_threshold;
3704                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3705                         rdev->wiphy.rts_threshold = rts_threshold;
3706                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3707                         rdev->wiphy.coverage_class = coverage_class;
3708                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3709                         rdev->wiphy.txq_limit = txq_limit;
3710                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3711                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3712                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3713                         rdev->wiphy.txq_quantum = txq_quantum;
3714
3715                 result = rdev_set_wiphy_params(rdev, changed);
3716                 if (result) {
3717                         rdev->wiphy.retry_short = old_retry_short;
3718                         rdev->wiphy.retry_long = old_retry_long;
3719                         rdev->wiphy.frag_threshold = old_frag_threshold;
3720                         rdev->wiphy.rts_threshold = old_rts_threshold;
3721                         rdev->wiphy.coverage_class = old_coverage_class;
3722                         rdev->wiphy.txq_limit = old_txq_limit;
3723                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3724                         rdev->wiphy.txq_quantum = old_txq_quantum;
3725                         goto out;
3726                 }
3727         }
3728
3729         result = 0;
3730
3731 out:
3732         wiphy_unlock(&rdev->wiphy);
3733         return result;
3734 }
3735
3736 static int nl80211_send_chandef(struct sk_buff *msg,
3737                                 const struct cfg80211_chan_def *chandef)
3738 {
3739         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3740                 return -EINVAL;
3741
3742         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3743                         chandef->chan->center_freq))
3744                 return -ENOBUFS;
3745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3746                         chandef->chan->freq_offset))
3747                 return -ENOBUFS;
3748         switch (chandef->width) {
3749         case NL80211_CHAN_WIDTH_20_NOHT:
3750         case NL80211_CHAN_WIDTH_20:
3751         case NL80211_CHAN_WIDTH_40:
3752                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3753                                 cfg80211_get_chandef_type(chandef)))
3754                         return -ENOBUFS;
3755                 break;
3756         default:
3757                 break;
3758         }
3759         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3760                 return -ENOBUFS;
3761         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3762                 return -ENOBUFS;
3763         if (chandef->center_freq2 &&
3764             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3765                 return -ENOBUFS;
3766         return 0;
3767 }
3768
3769 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3770                               struct cfg80211_registered_device *rdev,
3771                               struct wireless_dev *wdev,
3772                               enum nl80211_commands cmd)
3773 {
3774         struct net_device *dev = wdev->netdev;
3775         void *hdr;
3776
3777         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3778                 cmd != NL80211_CMD_DEL_INTERFACE &&
3779                 cmd != NL80211_CMD_SET_INTERFACE);
3780
3781         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3782         if (!hdr)
3783                 return -1;
3784
3785         if (dev &&
3786             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3787              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3788                 goto nla_put_failure;
3789
3790         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3791             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3792             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3793                               NL80211_ATTR_PAD) ||
3794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3795             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3796                         rdev->devlist_generation ^
3797                         (cfg80211_rdev_list_generation << 2)) ||
3798             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3799                 goto nla_put_failure;
3800
3801         if (rdev->ops->get_channel && !wdev->valid_links) {
3802                 struct cfg80211_chan_def chandef = {};
3803                 int ret;
3804
3805                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3806                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3807                         goto nla_put_failure;
3808         }
3809
3810         if (rdev->ops->get_tx_power) {
3811                 int dbm, ret;
3812
3813                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3814                 if (ret == 0 &&
3815                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3816                                 DBM_TO_MBM(dbm)))
3817                         goto nla_put_failure;
3818         }
3819
3820         wdev_lock(wdev);
3821         switch (wdev->iftype) {
3822         case NL80211_IFTYPE_AP:
3823         case NL80211_IFTYPE_P2P_GO:
3824                 if (wdev->u.ap.ssid_len &&
3825                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3826                             wdev->u.ap.ssid))
3827                         goto nla_put_failure_locked;
3828                 break;
3829         case NL80211_IFTYPE_STATION:
3830         case NL80211_IFTYPE_P2P_CLIENT:
3831                 if (wdev->u.client.ssid_len &&
3832                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3833                             wdev->u.client.ssid))
3834                         goto nla_put_failure_locked;
3835                 break;
3836         case NL80211_IFTYPE_ADHOC:
3837                 if (wdev->u.ibss.ssid_len &&
3838                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3839                             wdev->u.ibss.ssid))
3840                         goto nla_put_failure_locked;
3841                 break;
3842         default:
3843                 /* nothing */
3844                 break;
3845         }
3846         wdev_unlock(wdev);
3847
3848         if (rdev->ops->get_txq_stats) {
3849                 struct cfg80211_txq_stats txqstats = {};
3850                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3851
3852                 if (ret == 0 &&
3853                     !nl80211_put_txq_stats(msg, &txqstats,
3854                                            NL80211_ATTR_TXQ_STATS))
3855                         goto nla_put_failure;
3856         }
3857
3858         if (wdev->valid_links) {
3859                 unsigned int link_id;
3860                 struct nlattr *links = nla_nest_start(msg,
3861                                                       NL80211_ATTR_MLO_LINKS);
3862
3863                 if (!links)
3864                         goto nla_put_failure;
3865
3866                 for_each_valid_link(wdev, link_id) {
3867                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3868                         struct cfg80211_chan_def chandef = {};
3869                         int ret;
3870
3871                         if (!link)
3872                                 goto nla_put_failure;
3873
3874                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3875                                 goto nla_put_failure;
3876                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3877                                     wdev->links[link_id].addr))
3878                                 goto nla_put_failure;
3879
3880                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3881                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3882                                 goto nla_put_failure;
3883
3884                         nla_nest_end(msg, link);
3885                 }
3886
3887                 nla_nest_end(msg, links);
3888         }
3889
3890         genlmsg_end(msg, hdr);
3891         return 0;
3892
3893  nla_put_failure_locked:
3894         wdev_unlock(wdev);
3895  nla_put_failure:
3896         genlmsg_cancel(msg, hdr);
3897         return -EMSGSIZE;
3898 }
3899
3900 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3901 {
3902         int wp_idx = 0;
3903         int if_idx = 0;
3904         int wp_start = cb->args[0];
3905         int if_start = cb->args[1];
3906         int filter_wiphy = -1;
3907         struct cfg80211_registered_device *rdev;
3908         struct wireless_dev *wdev;
3909         int ret;
3910
3911         rtnl_lock();
3912         if (!cb->args[2]) {
3913                 struct nl80211_dump_wiphy_state state = {
3914                         .filter_wiphy = -1,
3915                 };
3916
3917                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3918                 if (ret)
3919                         goto out_unlock;
3920
3921                 filter_wiphy = state.filter_wiphy;
3922
3923                 /*
3924                  * if filtering, set cb->args[2] to +1 since 0 is the default
3925                  * value needed to determine that parsing is necessary.
3926                  */
3927                 if (filter_wiphy >= 0)
3928                         cb->args[2] = filter_wiphy + 1;
3929                 else
3930                         cb->args[2] = -1;
3931         } else if (cb->args[2] > 0) {
3932                 filter_wiphy = cb->args[2] - 1;
3933         }
3934
3935         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3936                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3937                         continue;
3938                 if (wp_idx < wp_start) {
3939                         wp_idx++;
3940                         continue;
3941                 }
3942
3943                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3944                         continue;
3945
3946                 if_idx = 0;
3947
3948                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3949                         if (if_idx < if_start) {
3950                                 if_idx++;
3951                                 continue;
3952                         }
3953                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3954                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3955                                                rdev, wdev,
3956                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3957                                 goto out;
3958                         }
3959                         if_idx++;
3960                 }
3961
3962                 wp_idx++;
3963         }
3964  out:
3965         cb->args[0] = wp_idx;
3966         cb->args[1] = if_idx;
3967
3968         ret = skb->len;
3969  out_unlock:
3970         rtnl_unlock();
3971
3972         return ret;
3973 }
3974
3975 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3976 {
3977         struct sk_buff *msg;
3978         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3979         struct wireless_dev *wdev = info->user_ptr[1];
3980
3981         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3982         if (!msg)
3983                 return -ENOMEM;
3984
3985         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3986                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3987                 nlmsg_free(msg);
3988                 return -ENOBUFS;
3989         }
3990
3991         return genlmsg_reply(msg, info);
3992 }
3993
3994 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3995         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3996         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3997         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3998         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3999         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4000         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4001 };
4002
4003 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4004 {
4005         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4006         int flag;
4007
4008         *mntrflags = 0;
4009
4010         if (!nla)
4011                 return -EINVAL;
4012
4013         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4014                 return -EINVAL;
4015
4016         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4017                 if (flags[flag])
4018                         *mntrflags |= (1<<flag);
4019
4020         *mntrflags |= MONITOR_FLAG_CHANGED;
4021
4022         return 0;
4023 }
4024
4025 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4026                                      enum nl80211_iftype type,
4027                                      struct genl_info *info,
4028                                      struct vif_params *params)
4029 {
4030         bool change = false;
4031         int err;
4032
4033         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4034                 if (type != NL80211_IFTYPE_MONITOR)
4035                         return -EINVAL;
4036
4037                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4038                                           &params->flags);
4039                 if (err)
4040                         return err;
4041
4042                 change = true;
4043         }
4044
4045         if (params->flags & MONITOR_FLAG_ACTIVE &&
4046             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4047                 return -EOPNOTSUPP;
4048
4049         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4050                 const u8 *mumimo_groups;
4051                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4052
4053                 if (type != NL80211_IFTYPE_MONITOR)
4054                         return -EINVAL;
4055
4056                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4057                         return -EOPNOTSUPP;
4058
4059                 mumimo_groups =
4060                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4061
4062                 /* bits 0 and 63 are reserved and must be zero */
4063                 if ((mumimo_groups[0] & BIT(0)) ||
4064                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4065                         return -EINVAL;
4066
4067                 params->vht_mumimo_groups = mumimo_groups;
4068                 change = true;
4069         }
4070
4071         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4072                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4073
4074                 if (type != NL80211_IFTYPE_MONITOR)
4075                         return -EINVAL;
4076
4077                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4078                         return -EOPNOTSUPP;
4079
4080                 params->vht_mumimo_follow_addr =
4081                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4082                 change = true;
4083         }
4084
4085         return change ? 1 : 0;
4086 }
4087
4088 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4089                                struct net_device *netdev, u8 use_4addr,
4090                                enum nl80211_iftype iftype)
4091 {
4092         if (!use_4addr) {
4093                 if (netdev && netif_is_bridge_port(netdev))
4094                         return -EBUSY;
4095                 return 0;
4096         }
4097
4098         switch (iftype) {
4099         case NL80211_IFTYPE_AP_VLAN:
4100                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4101                         return 0;
4102                 break;
4103         case NL80211_IFTYPE_STATION:
4104                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4105                         return 0;
4106                 break;
4107         default:
4108                 break;
4109         }
4110
4111         return -EOPNOTSUPP;
4112 }
4113
4114 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4115 {
4116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117         struct vif_params params;
4118         int err;
4119         enum nl80211_iftype otype, ntype;
4120         struct net_device *dev = info->user_ptr[1];
4121         bool change = false;
4122
4123         memset(&params, 0, sizeof(params));
4124
4125         otype = ntype = dev->ieee80211_ptr->iftype;
4126
4127         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4128                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4129                 if (otype != ntype)
4130                         change = true;
4131         }
4132
4133         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4134                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4135
4136                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4137                         return -EINVAL;
4138                 if (netif_running(dev))
4139                         return -EBUSY;
4140
4141                 wdev_lock(wdev);
4142                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4143                              IEEE80211_MAX_MESH_ID_LEN);
4144                 wdev->u.mesh.id_up_len =
4145                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4146                 memcpy(wdev->u.mesh.id,
4147                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4148                        wdev->u.mesh.id_up_len);
4149                 wdev_unlock(wdev);
4150         }
4151
4152         if (info->attrs[NL80211_ATTR_4ADDR]) {
4153                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4154                 change = true;
4155                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4156                 if (err)
4157                         return err;
4158         } else {
4159                 params.use_4addr = -1;
4160         }
4161
4162         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4163         if (err < 0)
4164                 return err;
4165         if (err > 0)
4166                 change = true;
4167
4168         if (change)
4169                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4170         else
4171                 err = 0;
4172
4173         if (!err && params.use_4addr != -1)
4174                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4175
4176         if (change && !err) {
4177                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4178
4179                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4180         }
4181
4182         return err;
4183 }
4184
4185 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4186 {
4187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4188         struct vif_params params;
4189         struct wireless_dev *wdev;
4190         struct sk_buff *msg;
4191         int err;
4192         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4193
4194         memset(&params, 0, sizeof(params));
4195
4196         if (!info->attrs[NL80211_ATTR_IFNAME])
4197                 return -EINVAL;
4198
4199         if (info->attrs[NL80211_ATTR_IFTYPE])
4200                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4201
4202         if (!rdev->ops->add_virtual_intf)
4203                 return -EOPNOTSUPP;
4204
4205         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4206              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4207             info->attrs[NL80211_ATTR_MAC]) {
4208                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4209                            ETH_ALEN);
4210                 if (!is_valid_ether_addr(params.macaddr))
4211                         return -EADDRNOTAVAIL;
4212         }
4213
4214         if (info->attrs[NL80211_ATTR_4ADDR]) {
4215                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4216                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4217                 if (err)
4218                         return err;
4219         }
4220
4221         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4222                 return -EOPNOTSUPP;
4223
4224         err = nl80211_parse_mon_options(rdev, type, info, &params);
4225         if (err < 0)
4226                 return err;
4227
4228         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4229         if (!msg)
4230                 return -ENOMEM;
4231
4232         wdev = rdev_add_virtual_intf(rdev,
4233                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4234                                 NET_NAME_USER, type, &params);
4235         if (WARN_ON(!wdev)) {
4236                 nlmsg_free(msg);
4237                 return -EPROTO;
4238         } else if (IS_ERR(wdev)) {
4239                 nlmsg_free(msg);
4240                 return PTR_ERR(wdev);
4241         }
4242
4243         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4244                 wdev->owner_nlportid = info->snd_portid;
4245
4246         switch (type) {
4247         case NL80211_IFTYPE_MESH_POINT:
4248                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4249                         break;
4250                 wdev_lock(wdev);
4251                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4252                              IEEE80211_MAX_MESH_ID_LEN);
4253                 wdev->u.mesh.id_up_len =
4254                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4255                 memcpy(wdev->u.mesh.id,
4256                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4257                        wdev->u.mesh.id_up_len);
4258                 wdev_unlock(wdev);
4259                 break;
4260         case NL80211_IFTYPE_NAN:
4261         case NL80211_IFTYPE_P2P_DEVICE:
4262                 /*
4263                  * P2P Device and NAN do not have a netdev, so don't go
4264                  * through the netdev notifier and must be added here
4265                  */
4266                 cfg80211_init_wdev(wdev);
4267                 cfg80211_register_wdev(rdev, wdev);
4268                 break;
4269         default:
4270                 break;
4271         }
4272
4273         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4274                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4275                 nlmsg_free(msg);
4276                 return -ENOBUFS;
4277         }
4278
4279         return genlmsg_reply(msg, info);
4280 }
4281
4282 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4283 {
4284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4285         int ret;
4286
4287         /* to avoid failing a new interface creation due to pending removal */
4288         cfg80211_destroy_ifaces(rdev);
4289
4290         wiphy_lock(&rdev->wiphy);
4291         ret = _nl80211_new_interface(skb, info);
4292         wiphy_unlock(&rdev->wiphy);
4293
4294         return ret;
4295 }
4296
4297 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4298 {
4299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4300         struct wireless_dev *wdev = info->user_ptr[1];
4301
4302         if (!rdev->ops->del_virtual_intf)
4303                 return -EOPNOTSUPP;
4304
4305         /*
4306          * We hold RTNL, so this is safe, without RTNL opencount cannot
4307          * reach 0, and thus the rdev cannot be deleted.
4308          *
4309          * We need to do it for the dev_close(), since that will call
4310          * the netdev notifiers, and we need to acquire the mutex there
4311          * but don't know if we get there from here or from some other
4312          * place (e.g. "ip link set ... down").
4313          */
4314         mutex_unlock(&rdev->wiphy.mtx);
4315
4316         /*
4317          * If we remove a wireless device without a netdev then clear
4318          * user_ptr[1] so that nl80211_post_doit won't dereference it
4319          * to check if it needs to do dev_put(). Otherwise it crashes
4320          * since the wdev has been freed, unlike with a netdev where
4321          * we need the dev_put() for the netdev to really be freed.
4322          */
4323         if (!wdev->netdev)
4324                 info->user_ptr[1] = NULL;
4325         else
4326                 dev_close(wdev->netdev);
4327
4328         mutex_lock(&rdev->wiphy.mtx);
4329
4330         return cfg80211_remove_virtual_intf(rdev, wdev);
4331 }
4332
4333 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4334 {
4335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4336         struct net_device *dev = info->user_ptr[1];
4337         u16 noack_map;
4338
4339         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4340                 return -EINVAL;
4341
4342         if (!rdev->ops->set_noack_map)
4343                 return -EOPNOTSUPP;
4344
4345         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4346
4347         return rdev_set_noack_map(rdev, dev, noack_map);
4348 }
4349
4350 static int nl80211_validate_key_link_id(struct genl_info *info,
4351                                         struct wireless_dev *wdev,
4352                                         int link_id, bool pairwise)
4353 {
4354         if (pairwise) {
4355                 if (link_id != -1) {
4356                         GENL_SET_ERR_MSG(info,
4357                                          "link ID not allowed for pairwise key");
4358                         return -EINVAL;
4359                 }
4360
4361                 return 0;
4362         }
4363
4364         if (wdev->valid_links) {
4365                 if (link_id == -1) {
4366                         GENL_SET_ERR_MSG(info,
4367                                          "link ID must for MLO group key");
4368                         return -EINVAL;
4369                 }
4370                 if (!(wdev->valid_links & BIT(link_id))) {
4371                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4372                         return -EINVAL;
4373                 }
4374         } else if (link_id != -1) {
4375                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4376                 return -EINVAL;
4377         }
4378
4379         return 0;
4380 }
4381
4382 struct get_key_cookie {
4383         struct sk_buff *msg;
4384         int error;
4385         int idx;
4386 };
4387
4388 static void get_key_callback(void *c, struct key_params *params)
4389 {
4390         struct nlattr *key;
4391         struct get_key_cookie *cookie = c;
4392
4393         if ((params->key &&
4394              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4395                      params->key_len, params->key)) ||
4396             (params->seq &&
4397              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4398                      params->seq_len, params->seq)) ||
4399             (params->cipher &&
4400              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4401                          params->cipher)))
4402                 goto nla_put_failure;
4403
4404         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4405         if (!key)
4406                 goto nla_put_failure;
4407
4408         if ((params->key &&
4409              nla_put(cookie->msg, NL80211_KEY_DATA,
4410                      params->key_len, params->key)) ||
4411             (params->seq &&
4412              nla_put(cookie->msg, NL80211_KEY_SEQ,
4413                      params->seq_len, params->seq)) ||
4414             (params->cipher &&
4415              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4416                          params->cipher)))
4417                 goto nla_put_failure;
4418
4419         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4420                 goto nla_put_failure;
4421
4422         nla_nest_end(cookie->msg, key);
4423
4424         return;
4425  nla_put_failure:
4426         cookie->error = 1;
4427 }
4428
4429 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4430 {
4431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4432         int err;
4433         struct net_device *dev = info->user_ptr[1];
4434         u8 key_idx = 0;
4435         const u8 *mac_addr = NULL;
4436         bool pairwise;
4437         struct get_key_cookie cookie = {
4438                 .error = 0,
4439         };
4440         void *hdr;
4441         struct sk_buff *msg;
4442         bool bigtk_support = false;
4443         int link_id = nl80211_link_id_or_invalid(info->attrs);
4444         struct wireless_dev *wdev = dev->ieee80211_ptr;
4445
4446         if (wiphy_ext_feature_isset(&rdev->wiphy,
4447                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4448                 bigtk_support = true;
4449
4450         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4451              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4452             wiphy_ext_feature_isset(&rdev->wiphy,
4453                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4454                 bigtk_support = true;
4455
4456         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4457                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4458
4459                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4460                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4461                         return -EINVAL;
4462                 }
4463         }
4464
4465         if (info->attrs[NL80211_ATTR_MAC])
4466                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4467
4468         pairwise = !!mac_addr;
4469         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4470                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4471
4472                 if (kt != NL80211_KEYTYPE_GROUP &&
4473                     kt != NL80211_KEYTYPE_PAIRWISE)
4474                         return -EINVAL;
4475                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4476         }
4477
4478         if (!rdev->ops->get_key)
4479                 return -EOPNOTSUPP;
4480
4481         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4482                 return -ENOENT;
4483
4484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4485         if (!msg)
4486                 return -ENOMEM;
4487
4488         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4489                              NL80211_CMD_NEW_KEY);
4490         if (!hdr)
4491                 goto nla_put_failure;
4492
4493         cookie.msg = msg;
4494         cookie.idx = key_idx;
4495
4496         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4497             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4498                 goto nla_put_failure;
4499         if (mac_addr &&
4500             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4501                 goto nla_put_failure;
4502
4503         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4504         if (err)
4505                 goto free_msg;
4506
4507         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4508                            &cookie, get_key_callback);
4509
4510         if (err)
4511                 goto free_msg;
4512
4513         if (cookie.error)
4514                 goto nla_put_failure;
4515
4516         genlmsg_end(msg, hdr);
4517         return genlmsg_reply(msg, info);
4518
4519  nla_put_failure:
4520         err = -ENOBUFS;
4521  free_msg:
4522         nlmsg_free(msg);
4523         return err;
4524 }
4525
4526 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4527 {
4528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4529         struct key_parse key;
4530         int err;
4531         struct net_device *dev = info->user_ptr[1];
4532         int link_id = nl80211_link_id_or_invalid(info->attrs);
4533         struct wireless_dev *wdev = dev->ieee80211_ptr;
4534
4535         err = nl80211_parse_key(info, &key);
4536         if (err)
4537                 return err;
4538
4539         if (key.idx < 0)
4540                 return -EINVAL;
4541
4542         /* Only support setting default key and
4543          * Extended Key ID action NL80211_KEY_SET_TX.
4544          */
4545         if (!key.def && !key.defmgmt && !key.defbeacon &&
4546             !(key.p.mode == NL80211_KEY_SET_TX))
4547                 return -EINVAL;
4548
4549         wdev_lock(wdev);
4550
4551         if (key.def) {
4552                 if (!rdev->ops->set_default_key) {
4553                         err = -EOPNOTSUPP;
4554                         goto out;
4555                 }
4556
4557                 err = nl80211_key_allowed(wdev);
4558                 if (err)
4559                         goto out;
4560
4561                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4562                 if (err)
4563                         goto out;
4564
4565                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4566                                            key.def_uni, key.def_multi);
4567
4568                 if (err)
4569                         goto out;
4570
4571 #ifdef CONFIG_CFG80211_WEXT
4572                 wdev->wext.default_key = key.idx;
4573 #endif
4574         } else if (key.defmgmt) {
4575                 if (key.def_uni || !key.def_multi) {
4576                         err = -EINVAL;
4577                         goto out;
4578                 }
4579
4580                 if (!rdev->ops->set_default_mgmt_key) {
4581                         err = -EOPNOTSUPP;
4582                         goto out;
4583                 }
4584
4585                 err = nl80211_key_allowed(wdev);
4586                 if (err)
4587                         goto out;
4588
4589                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4590                 if (err)
4591                         goto out;
4592
4593                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4594                 if (err)
4595                         goto out;
4596
4597 #ifdef CONFIG_CFG80211_WEXT
4598                 wdev->wext.default_mgmt_key = key.idx;
4599 #endif
4600         } else if (key.defbeacon) {
4601                 if (key.def_uni || !key.def_multi) {
4602                         err = -EINVAL;
4603                         goto out;
4604                 }
4605
4606                 if (!rdev->ops->set_default_beacon_key) {
4607                         err = -EOPNOTSUPP;
4608                         goto out;
4609                 }
4610
4611                 err = nl80211_key_allowed(wdev);
4612                 if (err)
4613                         goto out;
4614
4615                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4616                 if (err)
4617                         goto out;
4618
4619                 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4620                 if (err)
4621                         goto out;
4622         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4623                    wiphy_ext_feature_isset(&rdev->wiphy,
4624                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4625                 u8 *mac_addr = NULL;
4626
4627                 if (info->attrs[NL80211_ATTR_MAC])
4628                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4629
4630                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4631                         err = -EINVAL;
4632                         goto out;
4633                 }
4634
4635                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4636                 if (err)
4637                         goto out;
4638
4639                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4640                                    NL80211_KEYTYPE_PAIRWISE,
4641                                    mac_addr, &key.p);
4642         } else {
4643                 err = -EINVAL;
4644         }
4645  out:
4646         wdev_unlock(wdev);
4647
4648         return err;
4649 }
4650
4651 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4652 {
4653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4654         int err;
4655         struct net_device *dev = info->user_ptr[1];
4656         struct key_parse key;
4657         const u8 *mac_addr = NULL;
4658         int link_id = nl80211_link_id_or_invalid(info->attrs);
4659         struct wireless_dev *wdev = dev->ieee80211_ptr;
4660
4661         err = nl80211_parse_key(info, &key);
4662         if (err)
4663                 return err;
4664
4665         if (!key.p.key) {
4666                 GENL_SET_ERR_MSG(info, "no key");
4667                 return -EINVAL;
4668         }
4669
4670         if (info->attrs[NL80211_ATTR_MAC])
4671                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4672
4673         if (key.type == -1) {
4674                 if (mac_addr)
4675                         key.type = NL80211_KEYTYPE_PAIRWISE;
4676                 else
4677                         key.type = NL80211_KEYTYPE_GROUP;
4678         }
4679
4680         /* for now */
4681         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4682             key.type != NL80211_KEYTYPE_GROUP) {
4683                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4684                 return -EINVAL;
4685         }
4686
4687         if (key.type == NL80211_KEYTYPE_GROUP &&
4688             info->attrs[NL80211_ATTR_VLAN_ID])
4689                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4690
4691         if (!rdev->ops->add_key)
4692                 return -EOPNOTSUPP;
4693
4694         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4695                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4696                                            mac_addr)) {
4697                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4698                 return -EINVAL;
4699         }
4700
4701         wdev_lock(wdev);
4702         err = nl80211_key_allowed(wdev);
4703         if (err)
4704                 GENL_SET_ERR_MSG(info, "key not allowed");
4705
4706         if (!err)
4707                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4708                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4709
4710         if (!err) {
4711                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4712                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4713                                     mac_addr, &key.p);
4714                 if (err)
4715                         GENL_SET_ERR_MSG(info, "key addition failed");
4716         }
4717         wdev_unlock(wdev);
4718
4719         return err;
4720 }
4721
4722 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4723 {
4724         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4725         int err;
4726         struct net_device *dev = info->user_ptr[1];
4727         u8 *mac_addr = NULL;
4728         struct key_parse key;
4729         int link_id = nl80211_link_id_or_invalid(info->attrs);
4730         struct wireless_dev *wdev = dev->ieee80211_ptr;
4731
4732         err = nl80211_parse_key(info, &key);
4733         if (err)
4734                 return err;
4735
4736         if (info->attrs[NL80211_ATTR_MAC])
4737                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4738
4739         if (key.type == -1) {
4740                 if (mac_addr)
4741                         key.type = NL80211_KEYTYPE_PAIRWISE;
4742                 else
4743                         key.type = NL80211_KEYTYPE_GROUP;
4744         }
4745
4746         /* for now */
4747         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4748             key.type != NL80211_KEYTYPE_GROUP)
4749                 return -EINVAL;
4750
4751         if (!cfg80211_valid_key_idx(rdev, key.idx,
4752                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4753                 return -EINVAL;
4754
4755         if (!rdev->ops->del_key)
4756                 return -EOPNOTSUPP;
4757
4758         wdev_lock(wdev);
4759         err = nl80211_key_allowed(wdev);
4760
4761         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4762             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4763                 err = -ENOENT;
4764
4765         if (!err)
4766                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4767                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4768
4769         if (!err)
4770                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4771                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4772                                    mac_addr);
4773
4774 #ifdef CONFIG_CFG80211_WEXT
4775         if (!err) {
4776                 if (key.idx == wdev->wext.default_key)
4777                         wdev->wext.default_key = -1;
4778                 else if (key.idx == wdev->wext.default_mgmt_key)
4779                         wdev->wext.default_mgmt_key = -1;
4780         }
4781 #endif
4782         wdev_unlock(wdev);
4783
4784         return err;
4785 }
4786
4787 /* This function returns an error or the number of nested attributes */
4788 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4789 {
4790         struct nlattr *attr;
4791         int n_entries = 0, tmp;
4792
4793         nla_for_each_nested(attr, nl_attr, tmp) {
4794                 if (nla_len(attr) != ETH_ALEN)
4795                         return -EINVAL;
4796
4797                 n_entries++;
4798         }
4799
4800         return n_entries;
4801 }
4802
4803 /*
4804  * This function parses ACL information and allocates memory for ACL data.
4805  * On successful return, the calling function is responsible to free the
4806  * ACL buffer returned by this function.
4807  */
4808 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4809                                                 struct genl_info *info)
4810 {
4811         enum nl80211_acl_policy acl_policy;
4812         struct nlattr *attr;
4813         struct cfg80211_acl_data *acl;
4814         int i = 0, n_entries, tmp;
4815
4816         if (!wiphy->max_acl_mac_addrs)
4817                 return ERR_PTR(-EOPNOTSUPP);
4818
4819         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4820                 return ERR_PTR(-EINVAL);
4821
4822         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4823         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4824             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4825                 return ERR_PTR(-EINVAL);
4826
4827         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4828                 return ERR_PTR(-EINVAL);
4829
4830         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4831         if (n_entries < 0)
4832                 return ERR_PTR(n_entries);
4833
4834         if (n_entries > wiphy->max_acl_mac_addrs)
4835                 return ERR_PTR(-ENOTSUPP);
4836
4837         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4838         if (!acl)
4839                 return ERR_PTR(-ENOMEM);
4840
4841         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4842                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4843                 i++;
4844         }
4845
4846         acl->n_acl_entries = n_entries;
4847         acl->acl_policy = acl_policy;
4848
4849         return acl;
4850 }
4851
4852 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4853 {
4854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4855         struct net_device *dev = info->user_ptr[1];
4856         struct cfg80211_acl_data *acl;
4857         int err;
4858
4859         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4860             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4861                 return -EOPNOTSUPP;
4862
4863         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4864                 return -EINVAL;
4865
4866         acl = parse_acl_data(&rdev->wiphy, info);
4867         if (IS_ERR(acl))
4868                 return PTR_ERR(acl);
4869
4870         err = rdev_set_mac_acl(rdev, dev, acl);
4871
4872         kfree(acl);
4873
4874         return err;
4875 }
4876
4877 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4878                            u8 *rates, u8 rates_len)
4879 {
4880         u8 i;
4881         u32 mask = 0;
4882
4883         for (i = 0; i < rates_len; i++) {
4884                 int rate = (rates[i] & 0x7f) * 5;
4885                 int ridx;
4886
4887                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4888                         struct ieee80211_rate *srate =
4889                                 &sband->bitrates[ridx];
4890                         if (rate == srate->bitrate) {
4891                                 mask |= 1 << ridx;
4892                                 break;
4893                         }
4894                 }
4895                 if (ridx == sband->n_bitrates)
4896                         return 0; /* rate not found */
4897         }
4898
4899         return mask;
4900 }
4901
4902 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4903                                u8 *rates, u8 rates_len,
4904                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4905 {
4906         u8 i;
4907
4908         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4909
4910         for (i = 0; i < rates_len; i++) {
4911                 int ridx, rbit;
4912
4913                 ridx = rates[i] / 8;
4914                 rbit = BIT(rates[i] % 8);
4915
4916                 /* check validity */
4917                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4918                         return false;
4919
4920                 /* check availability */
4921                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4922                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4923                         mcs[ridx] |= rbit;
4924                 else
4925                         return false;
4926         }
4927
4928         return true;
4929 }
4930
4931 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4932 {
4933         u16 mcs_mask = 0;
4934
4935         switch (vht_mcs_map) {
4936         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4937                 break;
4938         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4939                 mcs_mask = 0x00FF;
4940                 break;
4941         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4942                 mcs_mask = 0x01FF;
4943                 break;
4944         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4945                 mcs_mask = 0x03FF;
4946                 break;
4947         default:
4948                 break;
4949         }
4950
4951         return mcs_mask;
4952 }
4953
4954 static void vht_build_mcs_mask(u16 vht_mcs_map,
4955                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4956 {
4957         u8 nss;
4958
4959         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4960                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4961                 vht_mcs_map >>= 2;
4962         }
4963 }
4964
4965 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4966                              struct nl80211_txrate_vht *txrate,
4967                              u16 mcs[NL80211_VHT_NSS_MAX])
4968 {
4969         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4970         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4971         u8 i;
4972
4973         if (!sband->vht_cap.vht_supported)
4974                 return false;
4975
4976         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4977
4978         /* Build vht_mcs_mask from VHT capabilities */
4979         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4980
4981         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4982                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4983                         mcs[i] = txrate->mcs[i];
4984                 else
4985                         return false;
4986         }
4987
4988         return true;
4989 }
4990
4991 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4992 {
4993         switch (he_mcs_map) {
4994         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4995                 return 0;
4996         case IEEE80211_HE_MCS_SUPPORT_0_7:
4997                 return 0x00FF;
4998         case IEEE80211_HE_MCS_SUPPORT_0_9:
4999                 return 0x03FF;
5000         case IEEE80211_HE_MCS_SUPPORT_0_11:
5001                 return 0xFFF;
5002         default:
5003                 break;
5004         }
5005         return 0;
5006 }
5007
5008 static void he_build_mcs_mask(u16 he_mcs_map,
5009                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5010 {
5011         u8 nss;
5012
5013         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5014                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5015                 he_mcs_map >>= 2;
5016         }
5017 }
5018
5019 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5020                            const struct ieee80211_sta_he_cap *he_cap)
5021 {
5022         struct net_device *dev = info->user_ptr[1];
5023         struct wireless_dev *wdev = dev->ieee80211_ptr;
5024         struct cfg80211_chan_def *chandef;
5025         __le16 tx_mcs;
5026
5027         chandef = wdev_chandef(wdev, link_id);
5028         if (!chandef) {
5029                 /*
5030                  * This is probably broken, but we never maintained
5031                  * a chandef in these cases, so it always was.
5032                  */
5033                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5034         }
5035
5036         switch (chandef->width) {
5037         case NL80211_CHAN_WIDTH_80P80:
5038                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5039                 break;
5040         case NL80211_CHAN_WIDTH_160:
5041                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5042                 break;
5043         default:
5044                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5045                 break;
5046         }
5047
5048         return le16_to_cpu(tx_mcs);
5049 }
5050
5051 static bool he_set_mcs_mask(struct genl_info *info,
5052                             struct wireless_dev *wdev,
5053                             struct ieee80211_supported_band *sband,
5054                             struct nl80211_txrate_he *txrate,
5055                             u16 mcs[NL80211_HE_NSS_MAX],
5056                             unsigned int link_id)
5057 {
5058         const struct ieee80211_sta_he_cap *he_cap;
5059         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5060         u16 tx_mcs_map = 0;
5061         u8 i;
5062
5063         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5064         if (!he_cap)
5065                 return false;
5066
5067         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5068
5069         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5070
5071         /* Build he_mcs_mask from HE capabilities */
5072         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5073
5074         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5075                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5076                         mcs[i] = txrate->mcs[i];
5077                 else
5078                         return false;
5079         }
5080
5081         return true;
5082 }
5083
5084 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5085                                          struct nlattr *attrs[],
5086                                          enum nl80211_attrs attr,
5087                                          struct cfg80211_bitrate_mask *mask,
5088                                          struct net_device *dev,
5089                                          bool default_all_enabled,
5090                                          unsigned int link_id)
5091 {
5092         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5094         struct wireless_dev *wdev = dev->ieee80211_ptr;
5095         int rem, i;
5096         struct nlattr *tx_rates;
5097         struct ieee80211_supported_band *sband;
5098         u16 vht_tx_mcs_map, he_tx_mcs_map;
5099
5100         memset(mask, 0, sizeof(*mask));
5101         /* Default to all rates enabled */
5102         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5103                 const struct ieee80211_sta_he_cap *he_cap;
5104
5105                 if (!default_all_enabled)
5106                         break;
5107
5108                 sband = rdev->wiphy.bands[i];
5109
5110                 if (!sband)
5111                         continue;
5112
5113                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5114                 memcpy(mask->control[i].ht_mcs,
5115                        sband->ht_cap.mcs.rx_mask,
5116                        sizeof(mask->control[i].ht_mcs));
5117
5118                 if (sband->vht_cap.vht_supported) {
5119                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5120                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5121                 }
5122
5123                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5124                 if (!he_cap)
5125                         continue;
5126
5127                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5128                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5129
5130                 mask->control[i].he_gi = 0xFF;
5131                 mask->control[i].he_ltf = 0xFF;
5132         }
5133
5134         /* if no rates are given set it back to the defaults */
5135         if (!attrs[attr])
5136                 goto out;
5137
5138         /* The nested attribute uses enum nl80211_band as the index. This maps
5139          * directly to the enum nl80211_band values used in cfg80211.
5140          */
5141         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5142         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5143                 enum nl80211_band band = nla_type(tx_rates);
5144                 int err;
5145
5146                 if (band < 0 || band >= NUM_NL80211_BANDS)
5147                         return -EINVAL;
5148                 sband = rdev->wiphy.bands[band];
5149                 if (sband == NULL)
5150                         return -EINVAL;
5151                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5152                                                   tx_rates,
5153                                                   nl80211_txattr_policy,
5154                                                   info->extack);
5155                 if (err)
5156                         return err;
5157                 if (tb[NL80211_TXRATE_LEGACY]) {
5158                         mask->control[band].legacy = rateset_to_mask(
5159                                 sband,
5160                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5161                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5162                         if ((mask->control[band].legacy == 0) &&
5163                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5164                                 return -EINVAL;
5165                 }
5166                 if (tb[NL80211_TXRATE_HT]) {
5167                         if (!ht_rateset_to_mask(
5168                                         sband,
5169                                         nla_data(tb[NL80211_TXRATE_HT]),
5170                                         nla_len(tb[NL80211_TXRATE_HT]),
5171                                         mask->control[band].ht_mcs))
5172                                 return -EINVAL;
5173                 }
5174
5175                 if (tb[NL80211_TXRATE_VHT]) {
5176                         if (!vht_set_mcs_mask(
5177                                         sband,
5178                                         nla_data(tb[NL80211_TXRATE_VHT]),
5179                                         mask->control[band].vht_mcs))
5180                                 return -EINVAL;
5181                 }
5182
5183                 if (tb[NL80211_TXRATE_GI]) {
5184                         mask->control[band].gi =
5185                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5186                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5187                                 return -EINVAL;
5188                 }
5189                 if (tb[NL80211_TXRATE_HE] &&
5190                     !he_set_mcs_mask(info, wdev, sband,
5191                                      nla_data(tb[NL80211_TXRATE_HE]),
5192                                      mask->control[band].he_mcs,
5193                                      link_id))
5194                         return -EINVAL;
5195
5196                 if (tb[NL80211_TXRATE_HE_GI])
5197                         mask->control[band].he_gi =
5198                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5199                 if (tb[NL80211_TXRATE_HE_LTF])
5200                         mask->control[band].he_ltf =
5201                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5202
5203                 if (mask->control[band].legacy == 0) {
5204                         /* don't allow empty legacy rates if HT, VHT or HE
5205                          * are not even supported.
5206                          */
5207                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5208                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5209                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5210                                 return -EINVAL;
5211
5212                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5213                                 if (mask->control[band].ht_mcs[i])
5214                                         goto out;
5215
5216                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5217                                 if (mask->control[band].vht_mcs[i])
5218                                         goto out;
5219
5220                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5221                                 if (mask->control[band].he_mcs[i])
5222                                         goto out;
5223
5224                         /* legacy and mcs rates may not be both empty */
5225                         return -EINVAL;
5226                 }
5227         }
5228
5229 out:
5230         return 0;
5231 }
5232
5233 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5234                                    enum nl80211_band band,
5235                                    struct cfg80211_bitrate_mask *beacon_rate)
5236 {
5237         u32 count_ht, count_vht, count_he, i;
5238         u32 rate = beacon_rate->control[band].legacy;
5239
5240         /* Allow only one rate */
5241         if (hweight32(rate) > 1)
5242                 return -EINVAL;
5243
5244         count_ht = 0;
5245         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5246                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5247                         return -EINVAL;
5248                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5249                         count_ht++;
5250                         if (count_ht > 1)
5251                                 return -EINVAL;
5252                 }
5253                 if (count_ht && rate)
5254                         return -EINVAL;
5255         }
5256
5257         count_vht = 0;
5258         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5259                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5260                         return -EINVAL;
5261                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5262                         count_vht++;
5263                         if (count_vht > 1)
5264                                 return -EINVAL;
5265                 }
5266                 if (count_vht && rate)
5267                         return -EINVAL;
5268         }
5269
5270         count_he = 0;
5271         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5272                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5273                         return -EINVAL;
5274                 } else if (beacon_rate->control[band].he_mcs[i]) {
5275                         count_he++;
5276                         if (count_he > 1)
5277                                 return -EINVAL;
5278                 }
5279                 if (count_he && rate)
5280                         return -EINVAL;
5281         }
5282
5283         if ((count_ht && count_vht && count_he) ||
5284             (!rate && !count_ht && !count_vht && !count_he))
5285                 return -EINVAL;
5286
5287         if (rate &&
5288             !wiphy_ext_feature_isset(&rdev->wiphy,
5289                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5290                 return -EINVAL;
5291         if (count_ht &&
5292             !wiphy_ext_feature_isset(&rdev->wiphy,
5293                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5294                 return -EINVAL;
5295         if (count_vht &&
5296             !wiphy_ext_feature_isset(&rdev->wiphy,
5297                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5298                 return -EINVAL;
5299         if (count_he &&
5300             !wiphy_ext_feature_isset(&rdev->wiphy,
5301                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5302                 return -EINVAL;
5303
5304         return 0;
5305 }
5306
5307 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5308                                        struct net_device *dev,
5309                                        struct nlattr *attrs,
5310                                        struct cfg80211_mbssid_config *config,
5311                                        u8 num_elems)
5312 {
5313         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5314
5315         if (!wiphy->mbssid_max_interfaces)
5316                 return -EOPNOTSUPP;
5317
5318         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5319                              NULL) ||
5320             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5321                 return -EINVAL;
5322
5323         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5324         if (config->ema) {
5325                 if (!wiphy->ema_max_profile_periodicity)
5326                         return -EOPNOTSUPP;
5327
5328                 if (num_elems > wiphy->ema_max_profile_periodicity)
5329                         return -EINVAL;
5330         }
5331
5332         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5333         if (config->index >= wiphy->mbssid_max_interfaces ||
5334             (!config->index && !num_elems))
5335                 return -EINVAL;
5336
5337         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5338                 u32 tx_ifindex =
5339                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5340
5341                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5342                     (config->index && tx_ifindex == dev->ifindex))
5343                         return -EINVAL;
5344
5345                 if (tx_ifindex != dev->ifindex) {
5346                         struct net_device *tx_netdev =
5347                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5348
5349                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5350                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5351                             tx_netdev->ieee80211_ptr->iftype !=
5352                                                         NL80211_IFTYPE_AP) {
5353                                 dev_put(tx_netdev);
5354                                 return -EINVAL;
5355                         }
5356
5357                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5358                 } else {
5359                         config->tx_wdev = dev->ieee80211_ptr;
5360                 }
5361         } else if (!config->index) {
5362                 config->tx_wdev = dev->ieee80211_ptr;
5363         } else {
5364                 return -EINVAL;
5365         }
5366
5367         return 0;
5368 }
5369
5370 static struct cfg80211_mbssid_elems *
5371 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5372 {
5373         struct nlattr *nl_elems;
5374         struct cfg80211_mbssid_elems *elems;
5375         int rem_elems;
5376         u8 i = 0, num_elems = 0;
5377
5378         if (!wiphy->mbssid_max_interfaces)
5379                 return ERR_PTR(-EINVAL);
5380
5381         nla_for_each_nested(nl_elems, attrs, rem_elems)
5382                 num_elems++;
5383
5384         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5385         if (!elems)
5386                 return ERR_PTR(-ENOMEM);
5387
5388         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5389                 elems->elem[i].data = nla_data(nl_elems);
5390                 elems->elem[i].len = nla_len(nl_elems);
5391                 i++;
5392         }
5393         elems->cnt = num_elems;
5394         return elems;
5395 }
5396
5397 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5398                                       struct cfg80211_he_bss_color *he_bss_color)
5399 {
5400         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5401         int err;
5402
5403         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5404                                he_bss_color_policy, NULL);
5405         if (err)
5406                 return err;
5407
5408         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5409                 return -EINVAL;
5410
5411         he_bss_color->color =
5412                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5413         he_bss_color->enabled =
5414                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5415         he_bss_color->partial =
5416                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5417
5418         return 0;
5419 }
5420
5421 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5422                                 struct nlattr *attrs[],
5423                                 struct cfg80211_beacon_data *bcn)
5424 {
5425         bool haveinfo = false;
5426         int err;
5427
5428         memset(bcn, 0, sizeof(*bcn));
5429
5430         bcn->link_id = nl80211_link_id(attrs);
5431
5432         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5433                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5434                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5435                 if (!bcn->head_len)
5436                         return -EINVAL;
5437                 haveinfo = true;
5438         }
5439
5440         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5441                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5442                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5443                 haveinfo = true;
5444         }
5445
5446         if (!haveinfo)
5447                 return -EINVAL;
5448
5449         if (attrs[NL80211_ATTR_IE]) {
5450                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5451                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5452         }
5453
5454         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5455                 bcn->proberesp_ies =
5456                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5457                 bcn->proberesp_ies_len =
5458                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5459         }
5460
5461         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5462                 bcn->assocresp_ies =
5463                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5464                 bcn->assocresp_ies_len =
5465                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5466         }
5467
5468         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5469                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5470                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5471         }
5472
5473         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5474                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5475
5476                 err = nla_parse_nested_deprecated(tb,
5477                                                   NL80211_FTM_RESP_ATTR_MAX,
5478                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5479                                                   NULL, NULL);
5480                 if (err)
5481                         return err;
5482
5483                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5484                     wiphy_ext_feature_isset(&rdev->wiphy,
5485                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5486                         bcn->ftm_responder = 1;
5487                 else
5488                         return -EOPNOTSUPP;
5489
5490                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5491                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5492                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5493                 }
5494
5495                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5496                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5497                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5498                 }
5499         } else {
5500                 bcn->ftm_responder = -1;
5501         }
5502
5503         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5504                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5505                                                  &bcn->he_bss_color);
5506                 if (err)
5507                         return err;
5508                 bcn->he_bss_color_valid = true;
5509         }
5510
5511         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5512                 struct cfg80211_mbssid_elems *mbssid =
5513                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5514                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5515
5516                 if (IS_ERR(mbssid))
5517                         return PTR_ERR(mbssid);
5518
5519                 bcn->mbssid_ies = mbssid;
5520         }
5521
5522         return 0;
5523 }
5524
5525 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5526                                     struct ieee80211_he_obss_pd *he_obss_pd)
5527 {
5528         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5529         int err;
5530
5531         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5532                                he_obss_pd_policy, NULL);
5533         if (err)
5534                 return err;
5535
5536         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5537                 return -EINVAL;
5538
5539         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5540
5541         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5542                 he_obss_pd->min_offset =
5543                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5544         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5545                 he_obss_pd->max_offset =
5546                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5547         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5548                 he_obss_pd->non_srg_max_offset =
5549                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5550
5551         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5552                 return -EINVAL;
5553
5554         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5555                 memcpy(he_obss_pd->bss_color_bitmap,
5556                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5557                        sizeof(he_obss_pd->bss_color_bitmap));
5558
5559         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5560                 memcpy(he_obss_pd->partial_bssid_bitmap,
5561                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5562                        sizeof(he_obss_pd->partial_bssid_bitmap));
5563
5564         he_obss_pd->enable = true;
5565
5566         return 0;
5567 }
5568
5569 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5570                                         struct nlattr *attrs,
5571                                         struct cfg80211_ap_settings *params)
5572 {
5573         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5574         int ret;
5575         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5576
5577         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5578                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5579                 return -EINVAL;
5580
5581         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5582                                NULL, NULL);
5583         if (ret)
5584                 return ret;
5585
5586         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5587             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5588             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5589                 return -EINVAL;
5590
5591         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5592         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5593         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5594         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5595
5596         return 0;
5597 }
5598
5599 static int
5600 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5601                                      struct nlattr *attrs,
5602                                      struct cfg80211_ap_settings *params)
5603 {
5604         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5605         int ret;
5606         struct cfg80211_unsol_bcast_probe_resp *presp =
5607                                         &params->unsol_bcast_probe_resp;
5608
5609         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5610                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5611                 return -EINVAL;
5612
5613         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5614                                attrs, NULL, NULL);
5615         if (ret)
5616                 return ret;
5617
5618         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5619             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5620                 return -EINVAL;
5621
5622         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5623         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5624         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5625         return 0;
5626 }
5627
5628 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5629                                             const struct element *rates)
5630 {
5631         int i;
5632
5633         if (!rates)
5634                 return;
5635
5636         for (i = 0; i < rates->datalen; i++) {
5637                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5638                         params->ht_required = true;
5639                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5640                         params->vht_required = true;
5641                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5642                         params->he_required = true;
5643                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5644                         params->sae_h2e_required = true;
5645         }
5646 }
5647
5648 /*
5649  * Since the nl80211 API didn't include, from the beginning, attributes about
5650  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5651  * benefit of drivers that rebuild IEs in the firmware.
5652  */
5653 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5654 {
5655         const struct cfg80211_beacon_data *bcn = &params->beacon;
5656         size_t ies_len = bcn->tail_len;
5657         const u8 *ies = bcn->tail;
5658         const struct element *rates;
5659         const struct element *cap;
5660
5661         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5662         nl80211_check_ap_rate_selectors(params, rates);
5663
5664         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5665         nl80211_check_ap_rate_selectors(params, rates);
5666
5667         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5668         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5669                 params->ht_cap = (void *)cap->data;
5670         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5671         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5672                 params->vht_cap = (void *)cap->data;
5673         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5674         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5675                 params->he_cap = (void *)(cap->data + 1);
5676         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5677         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5678                 params->he_oper = (void *)(cap->data + 1);
5679         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5680         if (cap) {
5681                 if (!cap->datalen)
5682                         return -EINVAL;
5683                 params->eht_cap = (void *)(cap->data + 1);
5684                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5685                                                 (const u8 *)params->eht_cap,
5686                                                 cap->datalen - 1, true))
5687                         return -EINVAL;
5688         }
5689         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5690         if (cap) {
5691                 if (!cap->datalen)
5692                         return -EINVAL;
5693                 params->eht_oper = (void *)(cap->data + 1);
5694                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5695                                                 cap->datalen - 1))
5696                         return -EINVAL;
5697         }
5698         return 0;
5699 }
5700
5701 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5702                                    struct cfg80211_ap_settings *params)
5703 {
5704         struct wireless_dev *wdev;
5705
5706         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5707                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5708                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5709                         continue;
5710
5711                 if (!wdev->u.ap.preset_chandef.chan)
5712                         continue;
5713
5714                 params->chandef = wdev->u.ap.preset_chandef;
5715                 return true;
5716         }
5717
5718         return false;
5719 }
5720
5721 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5722                                     enum nl80211_auth_type auth_type,
5723                                     enum nl80211_commands cmd)
5724 {
5725         if (auth_type > NL80211_AUTHTYPE_MAX)
5726                 return false;
5727
5728         switch (cmd) {
5729         case NL80211_CMD_AUTHENTICATE:
5730                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5731                     auth_type == NL80211_AUTHTYPE_SAE)
5732                         return false;
5733                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5734                                              NL80211_EXT_FEATURE_FILS_STA) &&
5735                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5736                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5737                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5738                         return false;
5739                 return true;
5740         case NL80211_CMD_CONNECT:
5741                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5742                     !wiphy_ext_feature_isset(&rdev->wiphy,
5743                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5744                     auth_type == NL80211_AUTHTYPE_SAE)
5745                         return false;
5746
5747                 /* FILS with SK PFS or PK not supported yet */
5748                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5749                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5750                         return false;
5751                 if (!wiphy_ext_feature_isset(
5752                             &rdev->wiphy,
5753                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5754                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5755                         return false;
5756                 return true;
5757         case NL80211_CMD_START_AP:
5758                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5759                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5760                     auth_type == NL80211_AUTHTYPE_SAE)
5761                         return false;
5762                 /* FILS not supported yet */
5763                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5764                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5765                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5766                         return false;
5767                 return true;
5768         default:
5769                 return false;
5770         }
5771 }
5772
5773 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5774 {
5775         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5776         unsigned int link_id = nl80211_link_id(info->attrs);
5777         struct net_device *dev = info->user_ptr[1];
5778         struct wireless_dev *wdev = dev->ieee80211_ptr;
5779         struct cfg80211_ap_settings *params;
5780         int err;
5781
5782         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5783             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5784                 return -EOPNOTSUPP;
5785
5786         if (!rdev->ops->start_ap)
5787                 return -EOPNOTSUPP;
5788
5789         if (wdev->links[link_id].ap.beacon_interval)
5790                 return -EALREADY;
5791
5792         /* these are required for START_AP */
5793         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5794             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5795             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5796                 return -EINVAL;
5797
5798         params = kzalloc(sizeof(*params), GFP_KERNEL);
5799         if (!params)
5800                 return -ENOMEM;
5801
5802         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon);
5803         if (err)
5804                 goto out;
5805
5806         params->beacon_interval =
5807                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5808         params->dtim_period =
5809                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5810
5811         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5812                                            params->beacon_interval);
5813         if (err)
5814                 goto out;
5815
5816         /*
5817          * In theory, some of these attributes should be required here
5818          * but since they were not used when the command was originally
5819          * added, keep them optional for old user space programs to let
5820          * them continue to work with drivers that do not need the
5821          * additional information -- drivers must check!
5822          */
5823         if (info->attrs[NL80211_ATTR_SSID]) {
5824                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5825                 params->ssid_len =
5826                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5827                 if (params->ssid_len == 0) {
5828                         err = -EINVAL;
5829                         goto out;
5830                 }
5831
5832                 if (wdev->u.ap.ssid_len &&
5833                     (wdev->u.ap.ssid_len != params->ssid_len ||
5834                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5835                         /* require identical SSID for MLO */
5836                         err = -EINVAL;
5837                         goto out;
5838                 }
5839         } else if (wdev->valid_links) {
5840                 /* require SSID for MLO */
5841                 err = -EINVAL;
5842                 goto out;
5843         }
5844
5845         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5846                 params->hidden_ssid = nla_get_u32(
5847                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5848
5849         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5850
5851         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5852                 params->auth_type = nla_get_u32(
5853                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5854                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5855                                              NL80211_CMD_START_AP)) {
5856                         err = -EINVAL;
5857                         goto out;
5858                 }
5859         } else
5860                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5861
5862         err = nl80211_crypto_settings(rdev, info, &params->crypto,
5863                                       NL80211_MAX_NR_CIPHER_SUITES);
5864         if (err)
5865                 goto out;
5866
5867         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5868                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
5869                         err = -EOPNOTSUPP;
5870                         goto out;
5871                 }
5872                 params->inactivity_timeout = nla_get_u16(
5873                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5874         }
5875
5876         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5877                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5878                         err = -EINVAL;
5879                         goto out;
5880                 }
5881                 params->p2p_ctwindow =
5882                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5883                 if (params->p2p_ctwindow != 0 &&
5884                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
5885                         err = -EINVAL;
5886                         goto out;
5887                 }
5888         }
5889
5890         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5891                 u8 tmp;
5892
5893                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5894                         err = -EINVAL;
5895                         goto out;
5896                 }
5897                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5898                 params->p2p_opp_ps = tmp;
5899                 if (params->p2p_opp_ps != 0 &&
5900                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
5901                         err = -EINVAL;
5902                         goto out;
5903                 }
5904         }
5905
5906         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5907                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
5908                 if (err)
5909                         goto out;
5910         } else if (wdev->valid_links) {
5911                 /* with MLD need to specify the channel configuration */
5912                 err = -EINVAL;
5913                 goto out;
5914         } else if (wdev->u.ap.preset_chandef.chan) {
5915                 params->chandef = wdev->u.ap.preset_chandef;
5916         } else if (!nl80211_get_ap_channel(rdev, params)) {
5917                 err = -EINVAL;
5918                 goto out;
5919         }
5920
5921         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
5922                                            wdev->iftype)) {
5923                 err = -EINVAL;
5924                 goto out;
5925         }
5926
5927         wdev_lock(wdev);
5928
5929         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5930                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5931                                                     NL80211_ATTR_TX_RATES,
5932                                                     &params->beacon_rate,
5933                                                     dev, false, link_id);
5934                 if (err)
5935                         goto out_unlock;
5936
5937                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
5938                                               &params->beacon_rate);
5939                 if (err)
5940                         goto out_unlock;
5941         }
5942
5943         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5944                 params->smps_mode =
5945                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5946                 switch (params->smps_mode) {
5947                 case NL80211_SMPS_OFF:
5948                         break;
5949                 case NL80211_SMPS_STATIC:
5950                         if (!(rdev->wiphy.features &
5951                               NL80211_FEATURE_STATIC_SMPS)) {
5952                                 err = -EINVAL;
5953                                 goto out_unlock;
5954                         }
5955                         break;
5956                 case NL80211_SMPS_DYNAMIC:
5957                         if (!(rdev->wiphy.features &
5958                               NL80211_FEATURE_DYNAMIC_SMPS)) {
5959                                 err = -EINVAL;
5960                                 goto out_unlock;
5961                         }
5962                         break;
5963                 default:
5964                         err = -EINVAL;
5965                         goto out_unlock;
5966                 }
5967         } else {
5968                 params->smps_mode = NL80211_SMPS_OFF;
5969         }
5970
5971         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5972         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
5973                 err = -EOPNOTSUPP;
5974                 goto out_unlock;
5975         }
5976
5977         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5978                 params->acl = parse_acl_data(&rdev->wiphy, info);
5979                 if (IS_ERR(params->acl)) {
5980                         err = PTR_ERR(params->acl);
5981                         params->acl = NULL;
5982                         goto out_unlock;
5983                 }
5984         }
5985
5986         params->twt_responder =
5987                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5988
5989         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5990                 err = nl80211_parse_he_obss_pd(
5991                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5992                                         &params->he_obss_pd);
5993                 if (err)
5994                         goto out_unlock;
5995         }
5996
5997         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5998                 err = nl80211_parse_fils_discovery(rdev,
5999                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6000                                                    params);
6001                 if (err)
6002                         goto out_unlock;
6003         }
6004
6005         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6006                 err = nl80211_parse_unsol_bcast_probe_resp(
6007                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6008                         params);
6009                 if (err)
6010                         goto out_unlock;
6011         }
6012
6013         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6014                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6015                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6016                                                   &params->mbssid_config,
6017                                                   params->beacon.mbssid_ies ?
6018                                                         params->beacon.mbssid_ies->cnt :
6019                                                         0);
6020                 if (err)
6021                         goto out_unlock;
6022         }
6023
6024         err = nl80211_calculate_ap_params(params);
6025         if (err)
6026                 goto out_unlock;
6027
6028         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6029                 params->flags = nla_get_u32(
6030                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6031         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6032                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6033
6034         if (wdev->conn_owner_nlportid &&
6035             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6036             wdev->conn_owner_nlportid != info->snd_portid) {
6037                 err = -EINVAL;
6038                 goto out_unlock;
6039         }
6040
6041         /* FIXME: validate MLO/link-id against driver capabilities */
6042
6043         err = rdev_start_ap(rdev, dev, params);
6044         if (!err) {
6045                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6046                 wdev->links[link_id].ap.chandef = params->chandef;
6047                 wdev->u.ap.ssid_len = params->ssid_len;
6048                 memcpy(wdev->u.ap.ssid, params->ssid,
6049                        params->ssid_len);
6050
6051                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6052                         wdev->conn_owner_nlportid = info->snd_portid;
6053         }
6054 out_unlock:
6055         wdev_unlock(wdev);
6056 out:
6057         kfree(params->acl);
6058         kfree(params->beacon.mbssid_ies);
6059         if (params->mbssid_config.tx_wdev &&
6060             params->mbssid_config.tx_wdev->netdev &&
6061             params->mbssid_config.tx_wdev->netdev != dev)
6062                 dev_put(params->mbssid_config.tx_wdev->netdev);
6063         kfree(params);
6064
6065         return err;
6066 }
6067
6068 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6069 {
6070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6071         unsigned int link_id = nl80211_link_id(info->attrs);
6072         struct net_device *dev = info->user_ptr[1];
6073         struct wireless_dev *wdev = dev->ieee80211_ptr;
6074         struct cfg80211_beacon_data params;
6075         int err;
6076
6077         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6078             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6079                 return -EOPNOTSUPP;
6080
6081         if (!rdev->ops->change_beacon)
6082                 return -EOPNOTSUPP;
6083
6084         if (!wdev->links[link_id].ap.beacon_interval)
6085                 return -EINVAL;
6086
6087         err = nl80211_parse_beacon(rdev, info->attrs, &params);
6088         if (err)
6089                 goto out;
6090
6091         wdev_lock(wdev);
6092         err = rdev_change_beacon(rdev, dev, &params);
6093         wdev_unlock(wdev);
6094
6095 out:
6096         kfree(params.mbssid_ies);
6097         return err;
6098 }
6099
6100 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6101 {
6102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6103         unsigned int link_id = nl80211_link_id(info->attrs);
6104         struct net_device *dev = info->user_ptr[1];
6105
6106         return cfg80211_stop_ap(rdev, dev, link_id, false);
6107 }
6108
6109 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6110         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6111         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6112         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6113         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6114         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6115         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6116 };
6117
6118 static int parse_station_flags(struct genl_info *info,
6119                                enum nl80211_iftype iftype,
6120                                struct station_parameters *params)
6121 {
6122         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6123         struct nlattr *nla;
6124         int flag;
6125
6126         /*
6127          * Try parsing the new attribute first so userspace
6128          * can specify both for older kernels.
6129          */
6130         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6131         if (nla) {
6132                 struct nl80211_sta_flag_update *sta_flags;
6133
6134                 sta_flags = nla_data(nla);
6135                 params->sta_flags_mask = sta_flags->mask;
6136                 params->sta_flags_set = sta_flags->set;
6137                 params->sta_flags_set &= params->sta_flags_mask;
6138                 if ((params->sta_flags_mask |
6139                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6140                         return -EINVAL;
6141                 return 0;
6142         }
6143
6144         /* if present, parse the old attribute */
6145
6146         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6147         if (!nla)
6148                 return 0;
6149
6150         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6151                 return -EINVAL;
6152
6153         /*
6154          * Only allow certain flags for interface types so that
6155          * other attributes are silently ignored. Remember that
6156          * this is backward compatibility code with old userspace
6157          * and shouldn't be hit in other cases anyway.
6158          */
6159         switch (iftype) {
6160         case NL80211_IFTYPE_AP:
6161         case NL80211_IFTYPE_AP_VLAN:
6162         case NL80211_IFTYPE_P2P_GO:
6163                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6164                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6165                                          BIT(NL80211_STA_FLAG_WME) |
6166                                          BIT(NL80211_STA_FLAG_MFP);
6167                 break;
6168         case NL80211_IFTYPE_P2P_CLIENT:
6169         case NL80211_IFTYPE_STATION:
6170                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6171                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6172                 break;
6173         case NL80211_IFTYPE_MESH_POINT:
6174                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6175                                          BIT(NL80211_STA_FLAG_MFP) |
6176                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6177                 break;
6178         default:
6179                 return -EINVAL;
6180         }
6181
6182         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6183                 if (flags[flag]) {
6184                         params->sta_flags_set |= (1<<flag);
6185
6186                         /* no longer support new API additions in old API */
6187                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6188                                 return -EINVAL;
6189                 }
6190         }
6191
6192         return 0;
6193 }
6194
6195 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6196 {
6197         struct nlattr *rate;
6198         u32 bitrate;
6199         u16 bitrate_compat;
6200         enum nl80211_rate_info rate_flg;
6201
6202         rate = nla_nest_start_noflag(msg, attr);
6203         if (!rate)
6204                 return false;
6205
6206         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6207         bitrate = cfg80211_calculate_bitrate(info);
6208         /* report 16-bit bitrate only if we can */
6209         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6210         if (bitrate > 0 &&
6211             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6212                 return false;
6213         if (bitrate_compat > 0 &&
6214             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6215                 return false;
6216
6217         switch (info->bw) {
6218         case RATE_INFO_BW_5:
6219                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6220                 break;
6221         case RATE_INFO_BW_10:
6222                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6223                 break;
6224         default:
6225                 WARN_ON(1);
6226                 fallthrough;
6227         case RATE_INFO_BW_20:
6228                 rate_flg = 0;
6229                 break;
6230         case RATE_INFO_BW_40:
6231                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6232                 break;
6233         case RATE_INFO_BW_80:
6234                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6235                 break;
6236         case RATE_INFO_BW_160:
6237                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6238                 break;
6239         case RATE_INFO_BW_HE_RU:
6240                 rate_flg = 0;
6241                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6242                 break;
6243         case RATE_INFO_BW_320:
6244                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6245                 break;
6246         case RATE_INFO_BW_EHT_RU:
6247                 rate_flg = 0;
6248                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6249                 break;
6250         }
6251
6252         if (rate_flg && nla_put_flag(msg, rate_flg))
6253                 return false;
6254
6255         if (info->flags & RATE_INFO_FLAGS_MCS) {
6256                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6257                         return false;
6258                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6259                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6260                         return false;
6261         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6262                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6263                         return false;
6264                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6265                         return false;
6266                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6267                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6268                         return false;
6269         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6270                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6271                         return false;
6272                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6273                         return false;
6274                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6275                         return false;
6276                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6277                         return false;
6278                 if (info->bw == RATE_INFO_BW_HE_RU &&
6279                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6280                                info->he_ru_alloc))
6281                         return false;
6282         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6283                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6284                         return false;
6285                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6286                         return false;
6287                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6288                         return false;
6289                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6290                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6291                                info->eht_ru_alloc))
6292                         return false;
6293         }
6294
6295         nla_nest_end(msg, rate);
6296         return true;
6297 }
6298
6299 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6300                                int id)
6301 {
6302         void *attr;
6303         int i = 0;
6304
6305         if (!mask)
6306                 return true;
6307
6308         attr = nla_nest_start_noflag(msg, id);
6309         if (!attr)
6310                 return false;
6311
6312         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6313                 if (!(mask & BIT(i)))
6314                         continue;
6315
6316                 if (nla_put_u8(msg, i, signal[i]))
6317                         return false;
6318         }
6319
6320         nla_nest_end(msg, attr);
6321
6322         return true;
6323 }
6324
6325 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6326                                 u32 seq, int flags,
6327                                 struct cfg80211_registered_device *rdev,
6328                                 struct net_device *dev,
6329                                 const u8 *mac_addr, struct station_info *sinfo)
6330 {
6331         void *hdr;
6332         struct nlattr *sinfoattr, *bss_param;
6333
6334         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6335         if (!hdr) {
6336                 cfg80211_sinfo_release_content(sinfo);
6337                 return -1;
6338         }
6339
6340         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6341             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6342             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6343                 goto nla_put_failure;
6344
6345         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6346         if (!sinfoattr)
6347                 goto nla_put_failure;
6348
6349 #define PUT_SINFO(attr, memb, type) do {                                \
6350         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6351         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6352             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6353                              sinfo->memb))                              \
6354                 goto nla_put_failure;                                   \
6355         } while (0)
6356 #define PUT_SINFO_U64(attr, memb) do {                                  \
6357         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6358             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6359                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6360                 goto nla_put_failure;                                   \
6361         } while (0)
6362
6363         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6364         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6365         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6366
6367         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6368                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6369             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6370                         (u32)sinfo->rx_bytes))
6371                 goto nla_put_failure;
6372
6373         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6374                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6375             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6376                         (u32)sinfo->tx_bytes))
6377                 goto nla_put_failure;
6378
6379         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6380         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6381         PUT_SINFO(LLID, llid, u16);
6382         PUT_SINFO(PLID, plid, u16);
6383         PUT_SINFO(PLINK_STATE, plink_state, u8);
6384         PUT_SINFO_U64(RX_DURATION, rx_duration);
6385         PUT_SINFO_U64(TX_DURATION, tx_duration);
6386
6387         if (wiphy_ext_feature_isset(&rdev->wiphy,
6388                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6389                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6390
6391         switch (rdev->wiphy.signal_type) {
6392         case CFG80211_SIGNAL_TYPE_MBM:
6393                 PUT_SINFO(SIGNAL, signal, u8);
6394                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6395                 break;
6396         default:
6397                 break;
6398         }
6399         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6400                 if (!nl80211_put_signal(msg, sinfo->chains,
6401                                         sinfo->chain_signal,
6402                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6403                         goto nla_put_failure;
6404         }
6405         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6406                 if (!nl80211_put_signal(msg, sinfo->chains,
6407                                         sinfo->chain_signal_avg,
6408                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6409                         goto nla_put_failure;
6410         }
6411         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6412                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6413                                           NL80211_STA_INFO_TX_BITRATE))
6414                         goto nla_put_failure;
6415         }
6416         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6417                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6418                                           NL80211_STA_INFO_RX_BITRATE))
6419                         goto nla_put_failure;
6420         }
6421
6422         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6423         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6424         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6425         PUT_SINFO(TX_FAILED, tx_failed, u32);
6426         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6427         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6428         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6429         PUT_SINFO(LOCAL_PM, local_pm, u32);
6430         PUT_SINFO(PEER_PM, peer_pm, u32);
6431         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6432         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6433         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6434
6435         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6436                 bss_param = nla_nest_start_noflag(msg,
6437                                                   NL80211_STA_INFO_BSS_PARAM);
6438                 if (!bss_param)
6439                         goto nla_put_failure;
6440
6441                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6442                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6443                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6444                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6445                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6446                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6447                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6448                                sinfo->bss_param.dtim_period) ||
6449                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6450                                 sinfo->bss_param.beacon_interval))
6451                         goto nla_put_failure;
6452
6453                 nla_nest_end(msg, bss_param);
6454         }
6455         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6456             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6457                     sizeof(struct nl80211_sta_flag_update),
6458                     &sinfo->sta_flags))
6459                 goto nla_put_failure;
6460
6461         PUT_SINFO_U64(T_OFFSET, t_offset);
6462         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6463         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6464         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6465         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6466         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6467         if (wiphy_ext_feature_isset(&rdev->wiphy,
6468                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6469                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6470                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6471         }
6472
6473 #undef PUT_SINFO
6474 #undef PUT_SINFO_U64
6475
6476         if (sinfo->pertid) {
6477                 struct nlattr *tidsattr;
6478                 int tid;
6479
6480                 tidsattr = nla_nest_start_noflag(msg,
6481                                                  NL80211_STA_INFO_TID_STATS);
6482                 if (!tidsattr)
6483                         goto nla_put_failure;
6484
6485                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6486                         struct cfg80211_tid_stats *tidstats;
6487                         struct nlattr *tidattr;
6488
6489                         tidstats = &sinfo->pertid[tid];
6490
6491                         if (!tidstats->filled)
6492                                 continue;
6493
6494                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6495                         if (!tidattr)
6496                                 goto nla_put_failure;
6497
6498 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6499         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6500             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6501                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6502                 goto nla_put_failure;                                   \
6503         } while (0)
6504
6505                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6506                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6507                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6508                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6509
6510 #undef PUT_TIDVAL_U64
6511                         if ((tidstats->filled &
6512                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6513                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6514                                                    NL80211_TID_STATS_TXQ_STATS))
6515                                 goto nla_put_failure;
6516
6517                         nla_nest_end(msg, tidattr);
6518                 }
6519
6520                 nla_nest_end(msg, tidsattr);
6521         }
6522
6523         nla_nest_end(msg, sinfoattr);
6524
6525         if (sinfo->assoc_req_ies_len &&
6526             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6527                     sinfo->assoc_req_ies))
6528                 goto nla_put_failure;
6529
6530         cfg80211_sinfo_release_content(sinfo);
6531         genlmsg_end(msg, hdr);
6532         return 0;
6533
6534  nla_put_failure:
6535         cfg80211_sinfo_release_content(sinfo);
6536         genlmsg_cancel(msg, hdr);
6537         return -EMSGSIZE;
6538 }
6539
6540 static int nl80211_dump_station(struct sk_buff *skb,
6541                                 struct netlink_callback *cb)
6542 {
6543         struct station_info sinfo;
6544         struct cfg80211_registered_device *rdev;
6545         struct wireless_dev *wdev;
6546         u8 mac_addr[ETH_ALEN];
6547         int sta_idx = cb->args[2];
6548         int err;
6549
6550         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6551         if (err)
6552                 return err;
6553         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6554         __acquire(&rdev->wiphy.mtx);
6555
6556         if (!wdev->netdev) {
6557                 err = -EINVAL;
6558                 goto out_err;
6559         }
6560
6561         if (!rdev->ops->dump_station) {
6562                 err = -EOPNOTSUPP;
6563                 goto out_err;
6564         }
6565
6566         while (1) {
6567                 memset(&sinfo, 0, sizeof(sinfo));
6568                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6569                                         mac_addr, &sinfo);
6570                 if (err == -ENOENT)
6571                         break;
6572                 if (err)
6573                         goto out_err;
6574
6575                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6576                                 NETLINK_CB(cb->skb).portid,
6577                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6578                                 rdev, wdev->netdev, mac_addr,
6579                                 &sinfo) < 0)
6580                         goto out;
6581
6582                 sta_idx++;
6583         }
6584
6585  out:
6586         cb->args[2] = sta_idx;
6587         err = skb->len;
6588  out_err:
6589         wiphy_unlock(&rdev->wiphy);
6590
6591         return err;
6592 }
6593
6594 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6595 {
6596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6597         struct net_device *dev = info->user_ptr[1];
6598         struct station_info sinfo;
6599         struct sk_buff *msg;
6600         u8 *mac_addr = NULL;
6601         int err;
6602
6603         memset(&sinfo, 0, sizeof(sinfo));
6604
6605         if (!info->attrs[NL80211_ATTR_MAC])
6606                 return -EINVAL;
6607
6608         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6609
6610         if (!rdev->ops->get_station)
6611                 return -EOPNOTSUPP;
6612
6613         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6614         if (err)
6615                 return err;
6616
6617         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6618         if (!msg) {
6619                 cfg80211_sinfo_release_content(&sinfo);
6620                 return -ENOMEM;
6621         }
6622
6623         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6624                                  info->snd_portid, info->snd_seq, 0,
6625                                  rdev, dev, mac_addr, &sinfo) < 0) {
6626                 nlmsg_free(msg);
6627                 return -ENOBUFS;
6628         }
6629
6630         return genlmsg_reply(msg, info);
6631 }
6632
6633 int cfg80211_check_station_change(struct wiphy *wiphy,
6634                                   struct station_parameters *params,
6635                                   enum cfg80211_station_type statype)
6636 {
6637         if (params->listen_interval != -1 &&
6638             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6639                 return -EINVAL;
6640
6641         if (params->support_p2p_ps != -1 &&
6642             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6643                 return -EINVAL;
6644
6645         if (params->aid &&
6646             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6647             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6648                 return -EINVAL;
6649
6650         /* When you run into this, adjust the code below for the new flag */
6651         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6652
6653         switch (statype) {
6654         case CFG80211_STA_MESH_PEER_KERNEL:
6655         case CFG80211_STA_MESH_PEER_USER:
6656                 /*
6657                  * No ignoring the TDLS flag here -- the userspace mesh
6658                  * code doesn't have the bug of including TDLS in the
6659                  * mask everywhere.
6660                  */
6661                 if (params->sta_flags_mask &
6662                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6663                                   BIT(NL80211_STA_FLAG_MFP) |
6664                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6665                         return -EINVAL;
6666                 break;
6667         case CFG80211_STA_TDLS_PEER_SETUP:
6668         case CFG80211_STA_TDLS_PEER_ACTIVE:
6669                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6670                         return -EINVAL;
6671                 /* ignore since it can't change */
6672                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6673                 break;
6674         default:
6675                 /* disallow mesh-specific things */
6676                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6677                         return -EINVAL;
6678                 if (params->local_pm)
6679                         return -EINVAL;
6680                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6681                         return -EINVAL;
6682         }
6683
6684         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6685             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6686                 /* TDLS can't be set, ... */
6687                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6688                         return -EINVAL;
6689                 /*
6690                  * ... but don't bother the driver with it. This works around
6691                  * a hostapd/wpa_supplicant issue -- it always includes the
6692                  * TLDS_PEER flag in the mask even for AP mode.
6693                  */
6694                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6695         }
6696
6697         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6698             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6699                 /* reject other things that can't change */
6700                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6701                         return -EINVAL;
6702                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6703                         return -EINVAL;
6704                 if (params->link_sta_params.supported_rates)
6705                         return -EINVAL;
6706                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6707                     params->link_sta_params.vht_capa ||
6708                     params->link_sta_params.he_capa ||
6709                     params->link_sta_params.eht_capa)
6710                         return -EINVAL;
6711         }
6712
6713         if (statype != CFG80211_STA_AP_CLIENT &&
6714             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6715                 if (params->vlan)
6716                         return -EINVAL;
6717         }
6718
6719         switch (statype) {
6720         case CFG80211_STA_AP_MLME_CLIENT:
6721                 /* Use this only for authorizing/unauthorizing a station */
6722                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6723                         return -EOPNOTSUPP;
6724                 break;
6725         case CFG80211_STA_AP_CLIENT:
6726         case CFG80211_STA_AP_CLIENT_UNASSOC:
6727                 /* accept only the listed bits */
6728                 if (params->sta_flags_mask &
6729                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6730                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6731                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6732                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6733                                   BIT(NL80211_STA_FLAG_WME) |
6734                                   BIT(NL80211_STA_FLAG_MFP)))
6735                         return -EINVAL;
6736
6737                 /* but authenticated/associated only if driver handles it */
6738                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6739                     params->sta_flags_mask &
6740                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6741                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6742                         return -EINVAL;
6743                 break;
6744         case CFG80211_STA_IBSS:
6745         case CFG80211_STA_AP_STA:
6746                 /* reject any changes other than AUTHORIZED */
6747                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6748                         return -EINVAL;
6749                 break;
6750         case CFG80211_STA_TDLS_PEER_SETUP:
6751                 /* reject any changes other than AUTHORIZED or WME */
6752                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6753                                                BIT(NL80211_STA_FLAG_WME)))
6754                         return -EINVAL;
6755                 /* force (at least) rates when authorizing */
6756                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6757                     !params->link_sta_params.supported_rates)
6758                         return -EINVAL;
6759                 break;
6760         case CFG80211_STA_TDLS_PEER_ACTIVE:
6761                 /* reject any changes */
6762                 return -EINVAL;
6763         case CFG80211_STA_MESH_PEER_KERNEL:
6764                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6765                         return -EINVAL;
6766                 break;
6767         case CFG80211_STA_MESH_PEER_USER:
6768                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6769                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6770                         return -EINVAL;
6771                 break;
6772         }
6773
6774         /*
6775          * Older kernel versions ignored this attribute entirely, so don't
6776          * reject attempts to update it but mark it as unused instead so the
6777          * driver won't look at the data.
6778          */
6779         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6780             statype != CFG80211_STA_TDLS_PEER_SETUP)
6781                 params->link_sta_params.opmode_notif_used = false;
6782
6783         return 0;
6784 }
6785 EXPORT_SYMBOL(cfg80211_check_station_change);
6786
6787 /*
6788  * Get vlan interface making sure it is running and on the right wiphy.
6789  */
6790 static struct net_device *get_vlan(struct genl_info *info,
6791                                    struct cfg80211_registered_device *rdev)
6792 {
6793         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6794         struct net_device *v;
6795         int ret;
6796
6797         if (!vlanattr)
6798                 return NULL;
6799
6800         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6801         if (!v)
6802                 return ERR_PTR(-ENODEV);
6803
6804         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6805                 ret = -EINVAL;
6806                 goto error;
6807         }
6808
6809         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6810             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6811             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6812                 ret = -EINVAL;
6813                 goto error;
6814         }
6815
6816         if (!netif_running(v)) {
6817                 ret = -ENETDOWN;
6818                 goto error;
6819         }
6820
6821         return v;
6822  error:
6823         dev_put(v);
6824         return ERR_PTR(ret);
6825 }
6826
6827 static int nl80211_parse_sta_wme(struct genl_info *info,
6828                                  struct station_parameters *params)
6829 {
6830         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6831         struct nlattr *nla;
6832         int err;
6833
6834         /* parse WME attributes if present */
6835         if (!info->attrs[NL80211_ATTR_STA_WME])
6836                 return 0;
6837
6838         nla = info->attrs[NL80211_ATTR_STA_WME];
6839         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6840                                           nl80211_sta_wme_policy,
6841                                           info->extack);
6842         if (err)
6843                 return err;
6844
6845         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6846                 params->uapsd_queues = nla_get_u8(
6847                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6848         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6849                 return -EINVAL;
6850
6851         if (tb[NL80211_STA_WME_MAX_SP])
6852                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6853
6854         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6855                 return -EINVAL;
6856
6857         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6858
6859         return 0;
6860 }
6861
6862 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6863                                       struct station_parameters *params)
6864 {
6865         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6866                 params->supported_channels =
6867                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6868                 params->supported_channels_len =
6869                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6870                 /*
6871                  * Need to include at least one (first channel, number of
6872                  * channels) tuple for each subband (checked in policy),
6873                  * and must have proper tuples for the rest of the data as well.
6874                  */
6875                 if (params->supported_channels_len % 2)
6876                         return -EINVAL;
6877         }
6878
6879         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6880                 params->supported_oper_classes =
6881                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6882                 params->supported_oper_classes_len =
6883                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6884         }
6885         return 0;
6886 }
6887
6888 static int nl80211_set_station_tdls(struct genl_info *info,
6889                                     struct station_parameters *params)
6890 {
6891         int err;
6892         /* Dummy STA entry gets updated once the peer capabilities are known */
6893         if (info->attrs[NL80211_ATTR_PEER_AID])
6894                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6895         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6896                 params->link_sta_params.ht_capa =
6897                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6898         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6899                 params->link_sta_params.vht_capa =
6900                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6901         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6902                 params->link_sta_params.he_capa =
6903                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6904                 params->link_sta_params.he_capa_len =
6905                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6906
6907                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
6908                         params->link_sta_params.eht_capa =
6909                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6910                         params->link_sta_params.eht_capa_len =
6911                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6912
6913                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
6914                                                         (const u8 *)params->link_sta_params.eht_capa,
6915                                                         params->link_sta_params.eht_capa_len,
6916                                                         false))
6917                                 return -EINVAL;
6918                 }
6919         }
6920
6921         err = nl80211_parse_sta_channel_info(info, params);
6922         if (err)
6923                 return err;
6924
6925         return nl80211_parse_sta_wme(info, params);
6926 }
6927
6928 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6929                                              struct sta_txpwr *txpwr,
6930                                              bool *txpwr_set)
6931 {
6932         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6933         int idx;
6934
6935         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6936                 if (!rdev->ops->set_tx_power ||
6937                     !wiphy_ext_feature_isset(&rdev->wiphy,
6938                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6939                         return -EOPNOTSUPP;
6940
6941                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6942                 txpwr->type = nla_get_u8(info->attrs[idx]);
6943
6944                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
6945                         idx = NL80211_ATTR_STA_TX_POWER;
6946
6947                         if (info->attrs[idx])
6948                                 txpwr->power = nla_get_s16(info->attrs[idx]);
6949                         else
6950                                 return -EINVAL;
6951                 }
6952
6953                 *txpwr_set = true;
6954         } else {
6955                 *txpwr_set = false;
6956         }
6957
6958         return 0;
6959 }
6960
6961 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6962 {
6963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6964         struct net_device *dev = info->user_ptr[1];
6965         struct station_parameters params;
6966         u8 *mac_addr;
6967         int err;
6968
6969         memset(&params, 0, sizeof(params));
6970
6971         if (!rdev->ops->change_station)
6972                 return -EOPNOTSUPP;
6973
6974         /*
6975          * AID and listen_interval properties can be set only for unassociated
6976          * station. Include these parameters here and will check them in
6977          * cfg80211_check_station_change().
6978          */
6979         if (info->attrs[NL80211_ATTR_STA_AID])
6980                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6981
6982         if (info->attrs[NL80211_ATTR_VLAN_ID])
6983                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6984
6985         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6986                 params.listen_interval =
6987                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6988         else
6989                 params.listen_interval = -1;
6990
6991         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6992                 params.support_p2p_ps =
6993                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6994         else
6995                 params.support_p2p_ps = -1;
6996
6997         if (!info->attrs[NL80211_ATTR_MAC])
6998                 return -EINVAL;
6999
7000         params.link_sta_params.link_id =
7001                 nl80211_link_id_or_invalid(info->attrs);
7002
7003         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7004                 /* If MLD_ADDR attribute is set then this is an MLD station
7005                  * and the MLD_ADDR attribute holds the MLD address and the
7006                  * MAC attribute holds for the LINK address.
7007                  * In that case, the link_id is also expected to be valid.
7008                  */
7009                 if (params.link_sta_params.link_id < 0)
7010                         return -EINVAL;
7011
7012                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7013                 params.link_sta_params.mld_mac = mac_addr;
7014                 params.link_sta_params.link_mac =
7015                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7016                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7017                         return -EINVAL;
7018         } else {
7019                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7020         }
7021
7022
7023         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7024                 params.link_sta_params.supported_rates =
7025                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7026                 params.link_sta_params.supported_rates_len =
7027                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7028         }
7029
7030         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7031                 params.capability =
7032                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7033                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7034         }
7035
7036         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7037                 params.ext_capab =
7038                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7039                 params.ext_capab_len =
7040                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7041         }
7042
7043         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7044                 return -EINVAL;
7045
7046         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7047                 params.plink_action =
7048                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7049
7050         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7051                 params.plink_state =
7052                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7053                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7054                         params.peer_aid = nla_get_u16(
7055                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7056                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7057         }
7058
7059         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7060                 params.local_pm = nla_get_u32(
7061                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7062
7063         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7064                 params.link_sta_params.opmode_notif_used = true;
7065                 params.link_sta_params.opmode_notif =
7066                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7067         }
7068
7069         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7070                 params.link_sta_params.he_6ghz_capa =
7071                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7072
7073         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7074                 params.airtime_weight =
7075                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7076
7077         if (params.airtime_weight &&
7078             !wiphy_ext_feature_isset(&rdev->wiphy,
7079                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7080                 return -EOPNOTSUPP;
7081
7082         err = nl80211_parse_sta_txpower_setting(info,
7083                                                 &params.link_sta_params.txpwr,
7084                                                 &params.link_sta_params.txpwr_set);
7085         if (err)
7086                 return err;
7087
7088         /* Include parameters for TDLS peer (will check later) */
7089         err = nl80211_set_station_tdls(info, &params);
7090         if (err)
7091                 return err;
7092
7093         params.vlan = get_vlan(info, rdev);
7094         if (IS_ERR(params.vlan))
7095                 return PTR_ERR(params.vlan);
7096
7097         switch (dev->ieee80211_ptr->iftype) {
7098         case NL80211_IFTYPE_AP:
7099         case NL80211_IFTYPE_AP_VLAN:
7100         case NL80211_IFTYPE_P2P_GO:
7101         case NL80211_IFTYPE_P2P_CLIENT:
7102         case NL80211_IFTYPE_STATION:
7103         case NL80211_IFTYPE_ADHOC:
7104         case NL80211_IFTYPE_MESH_POINT:
7105                 break;
7106         default:
7107                 err = -EOPNOTSUPP;
7108                 goto out_put_vlan;
7109         }
7110
7111         /* driver will call cfg80211_check_station_change() */
7112         wdev_lock(dev->ieee80211_ptr);
7113         err = rdev_change_station(rdev, dev, mac_addr, &params);
7114         wdev_unlock(dev->ieee80211_ptr);
7115
7116  out_put_vlan:
7117         dev_put(params.vlan);
7118
7119         return err;
7120 }
7121
7122 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7123 {
7124         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7125         int err;
7126         struct net_device *dev = info->user_ptr[1];
7127         struct wireless_dev *wdev = dev->ieee80211_ptr;
7128         struct station_parameters params;
7129         u8 *mac_addr = NULL;
7130         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7131                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7132
7133         memset(&params, 0, sizeof(params));
7134
7135         if (!rdev->ops->add_station)
7136                 return -EOPNOTSUPP;
7137
7138         if (!info->attrs[NL80211_ATTR_MAC])
7139                 return -EINVAL;
7140
7141         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7142                 return -EINVAL;
7143
7144         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7145                 return -EINVAL;
7146
7147         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7148             !info->attrs[NL80211_ATTR_PEER_AID])
7149                 return -EINVAL;
7150
7151         params.link_sta_params.link_id =
7152                 nl80211_link_id_or_invalid(info->attrs);
7153
7154         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7155                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7156                 params.link_sta_params.mld_mac = mac_addr;
7157                 params.link_sta_params.link_mac =
7158                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7159                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7160                         return -EINVAL;
7161         } else {
7162                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7163         }
7164
7165         params.link_sta_params.supported_rates =
7166                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7167         params.link_sta_params.supported_rates_len =
7168                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7169         params.listen_interval =
7170                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7171
7172         if (info->attrs[NL80211_ATTR_VLAN_ID])
7173                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7174
7175         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7176                 params.support_p2p_ps =
7177                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7178         } else {
7179                 /*
7180                  * if not specified, assume it's supported for P2P GO interface,
7181                  * and is NOT supported for AP interface
7182                  */
7183                 params.support_p2p_ps =
7184                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7185         }
7186
7187         if (info->attrs[NL80211_ATTR_PEER_AID])
7188                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7189         else
7190                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7191
7192         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7193                 params.capability =
7194                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7195                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7196         }
7197
7198         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7199                 params.ext_capab =
7200                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7201                 params.ext_capab_len =
7202                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7203         }
7204
7205         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7206                 params.link_sta_params.ht_capa =
7207                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7208
7209         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7210                 params.link_sta_params.vht_capa =
7211                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7212
7213         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7214                 params.link_sta_params.he_capa =
7215                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7216                 params.link_sta_params.he_capa_len =
7217                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7218
7219                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7220                         params.link_sta_params.eht_capa =
7221                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7222                         params.link_sta_params.eht_capa_len =
7223                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7224
7225                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7226                                                         (const u8 *)params.link_sta_params.eht_capa,
7227                                                         params.link_sta_params.eht_capa_len,
7228                                                         false))
7229                                 return -EINVAL;
7230                 }
7231         }
7232
7233         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7234                 params.link_sta_params.he_6ghz_capa =
7235                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7236
7237         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7238                 params.link_sta_params.opmode_notif_used = true;
7239                 params.link_sta_params.opmode_notif =
7240                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7241         }
7242
7243         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7244                 params.plink_action =
7245                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7246
7247         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7248                 params.airtime_weight =
7249                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7250
7251         if (params.airtime_weight &&
7252             !wiphy_ext_feature_isset(&rdev->wiphy,
7253                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7254                 return -EOPNOTSUPP;
7255
7256         err = nl80211_parse_sta_txpower_setting(info,
7257                                                 &params.link_sta_params.txpwr,
7258                                                 &params.link_sta_params.txpwr_set);
7259         if (err)
7260                 return err;
7261
7262         err = nl80211_parse_sta_channel_info(info, &params);
7263         if (err)
7264                 return err;
7265
7266         err = nl80211_parse_sta_wme(info, &params);
7267         if (err)
7268                 return err;
7269
7270         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7271                 return -EINVAL;
7272
7273         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7274          * as userspace might just pass through the capabilities from the IEs
7275          * directly, rather than enforcing this restriction and returning an
7276          * error in this case.
7277          */
7278         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7279                 params.link_sta_params.ht_capa = NULL;
7280                 params.link_sta_params.vht_capa = NULL;
7281
7282                 /* HE and EHT require WME */
7283                 if (params.link_sta_params.he_capa_len ||
7284                     params.link_sta_params.he_6ghz_capa ||
7285                     params.link_sta_params.eht_capa_len)
7286                         return -EINVAL;
7287         }
7288
7289         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7290         if (params.link_sta_params.he_6ghz_capa &&
7291             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7292                 return -EINVAL;
7293
7294         /* When you run into this, adjust the code below for the new flag */
7295         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7296
7297         switch (dev->ieee80211_ptr->iftype) {
7298         case NL80211_IFTYPE_AP:
7299         case NL80211_IFTYPE_AP_VLAN:
7300         case NL80211_IFTYPE_P2P_GO:
7301                 /* ignore WME attributes if iface/sta is not capable */
7302                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7303                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7304                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7305
7306                 /* TDLS peers cannot be added */
7307                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7308                     info->attrs[NL80211_ATTR_PEER_AID])
7309                         return -EINVAL;
7310                 /* but don't bother the driver with it */
7311                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7312
7313                 /* allow authenticated/associated only if driver handles it */
7314                 if (!(rdev->wiphy.features &
7315                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7316                     params.sta_flags_mask & auth_assoc)
7317                         return -EINVAL;
7318
7319                 /* Older userspace, or userspace wanting to be compatible with
7320                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7321                  * and assoc flags in the mask, but assumes the station will be
7322                  * added as associated anyway since this was the required driver
7323                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7324                  * introduced.
7325                  * In order to not bother drivers with this quirk in the API
7326                  * set the flags in both the mask and set for new stations in
7327                  * this case.
7328                  */
7329                 if (!(params.sta_flags_mask & auth_assoc)) {
7330                         params.sta_flags_mask |= auth_assoc;
7331                         params.sta_flags_set |= auth_assoc;
7332                 }
7333
7334                 /* must be last in here for error handling */
7335                 params.vlan = get_vlan(info, rdev);
7336                 if (IS_ERR(params.vlan))
7337                         return PTR_ERR(params.vlan);
7338                 break;
7339         case NL80211_IFTYPE_MESH_POINT:
7340                 /* ignore uAPSD data */
7341                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7342
7343                 /* associated is disallowed */
7344                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7345                         return -EINVAL;
7346                 /* TDLS peers cannot be added */
7347                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7348                     info->attrs[NL80211_ATTR_PEER_AID])
7349                         return -EINVAL;
7350                 break;
7351         case NL80211_IFTYPE_STATION:
7352         case NL80211_IFTYPE_P2P_CLIENT:
7353                 /* ignore uAPSD data */
7354                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7355
7356                 /* these are disallowed */
7357                 if (params.sta_flags_mask &
7358                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7359                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7360                         return -EINVAL;
7361                 /* Only TDLS peers can be added */
7362                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7363                         return -EINVAL;
7364                 /* Can only add if TDLS ... */
7365                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7366                         return -EOPNOTSUPP;
7367                 /* ... with external setup is supported */
7368                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7369                         return -EOPNOTSUPP;
7370                 /*
7371                  * Older wpa_supplicant versions always mark the TDLS peer
7372                  * as authorized, but it shouldn't yet be.
7373                  */
7374                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7375                 break;
7376         default:
7377                 return -EOPNOTSUPP;
7378         }
7379
7380         /* be aware of params.vlan when changing code here */
7381
7382         wdev_lock(dev->ieee80211_ptr);
7383         if (wdev->valid_links) {
7384                 if (params.link_sta_params.link_id < 0) {
7385                         err = -EINVAL;
7386                         goto out;
7387                 }
7388                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7389                         err = -ENOLINK;
7390                         goto out;
7391                 }
7392         } else {
7393                 if (params.link_sta_params.link_id >= 0) {
7394                         err = -EINVAL;
7395                         goto out;
7396                 }
7397         }
7398         err = rdev_add_station(rdev, dev, mac_addr, &params);
7399 out:
7400         wdev_unlock(dev->ieee80211_ptr);
7401         dev_put(params.vlan);
7402         return err;
7403 }
7404
7405 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7406 {
7407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7408         struct net_device *dev = info->user_ptr[1];
7409         struct station_del_parameters params;
7410         int ret;
7411
7412         memset(&params, 0, sizeof(params));
7413
7414         if (info->attrs[NL80211_ATTR_MAC])
7415                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7416
7417         switch (dev->ieee80211_ptr->iftype) {
7418         case NL80211_IFTYPE_AP:
7419         case NL80211_IFTYPE_AP_VLAN:
7420         case NL80211_IFTYPE_MESH_POINT:
7421         case NL80211_IFTYPE_P2P_GO:
7422                 /* always accept these */
7423                 break;
7424         case NL80211_IFTYPE_ADHOC:
7425                 /* conditionally accept */
7426                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7427                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7428                         break;
7429                 return -EINVAL;
7430         default:
7431                 return -EINVAL;
7432         }
7433
7434         if (!rdev->ops->del_station)
7435                 return -EOPNOTSUPP;
7436
7437         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7438                 params.subtype =
7439                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7440                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7441                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7442                         return -EINVAL;
7443         } else {
7444                 /* Default to Deauthentication frame */
7445                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7446         }
7447
7448         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7449                 params.reason_code =
7450                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7451                 if (params.reason_code == 0)
7452                         return -EINVAL; /* 0 is reserved */
7453         } else {
7454                 /* Default to reason code 2 */
7455                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7456         }
7457
7458         wdev_lock(dev->ieee80211_ptr);
7459         ret = rdev_del_station(rdev, dev, &params);
7460         wdev_unlock(dev->ieee80211_ptr);
7461
7462         return ret;
7463 }
7464
7465 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7466                                 int flags, struct net_device *dev,
7467                                 u8 *dst, u8 *next_hop,
7468                                 struct mpath_info *pinfo)
7469 {
7470         void *hdr;
7471         struct nlattr *pinfoattr;
7472
7473         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7474         if (!hdr)
7475                 return -1;
7476
7477         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7478             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7479             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7480             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7481                 goto nla_put_failure;
7482
7483         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7484         if (!pinfoattr)
7485                 goto nla_put_failure;
7486         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7487             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7488                         pinfo->frame_qlen))
7489                 goto nla_put_failure;
7490         if (((pinfo->filled & MPATH_INFO_SN) &&
7491              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7492             ((pinfo->filled & MPATH_INFO_METRIC) &&
7493              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7494                          pinfo->metric)) ||
7495             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7496              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7497                          pinfo->exptime)) ||
7498             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7499              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7500                         pinfo->flags)) ||
7501             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7502              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7503                          pinfo->discovery_timeout)) ||
7504             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7505              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7506                         pinfo->discovery_retries)) ||
7507             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7508              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7509                         pinfo->hop_count)) ||
7510             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7511              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7512                          pinfo->path_change_count)))
7513                 goto nla_put_failure;
7514
7515         nla_nest_end(msg, pinfoattr);
7516
7517         genlmsg_end(msg, hdr);
7518         return 0;
7519
7520  nla_put_failure:
7521         genlmsg_cancel(msg, hdr);
7522         return -EMSGSIZE;
7523 }
7524
7525 static int nl80211_dump_mpath(struct sk_buff *skb,
7526                               struct netlink_callback *cb)
7527 {
7528         struct mpath_info pinfo;
7529         struct cfg80211_registered_device *rdev;
7530         struct wireless_dev *wdev;
7531         u8 dst[ETH_ALEN];
7532         u8 next_hop[ETH_ALEN];
7533         int path_idx = cb->args[2];
7534         int err;
7535
7536         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7537         if (err)
7538                 return err;
7539         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7540         __acquire(&rdev->wiphy.mtx);
7541
7542         if (!rdev->ops->dump_mpath) {
7543                 err = -EOPNOTSUPP;
7544                 goto out_err;
7545         }
7546
7547         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7548                 err = -EOPNOTSUPP;
7549                 goto out_err;
7550         }
7551
7552         while (1) {
7553                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7554                                       next_hop, &pinfo);
7555                 if (err == -ENOENT)
7556                         break;
7557                 if (err)
7558                         goto out_err;
7559
7560                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7561                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7562                                        wdev->netdev, dst, next_hop,
7563                                        &pinfo) < 0)
7564                         goto out;
7565
7566                 path_idx++;
7567         }
7568
7569  out:
7570         cb->args[2] = path_idx;
7571         err = skb->len;
7572  out_err:
7573         wiphy_unlock(&rdev->wiphy);
7574         return err;
7575 }
7576
7577 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7578 {
7579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7580         int err;
7581         struct net_device *dev = info->user_ptr[1];
7582         struct mpath_info pinfo;
7583         struct sk_buff *msg;
7584         u8 *dst = NULL;
7585         u8 next_hop[ETH_ALEN];
7586
7587         memset(&pinfo, 0, sizeof(pinfo));
7588
7589         if (!info->attrs[NL80211_ATTR_MAC])
7590                 return -EINVAL;
7591
7592         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7593
7594         if (!rdev->ops->get_mpath)
7595                 return -EOPNOTSUPP;
7596
7597         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7598                 return -EOPNOTSUPP;
7599
7600         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7601         if (err)
7602                 return err;
7603
7604         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7605         if (!msg)
7606                 return -ENOMEM;
7607
7608         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7609                                  dev, dst, next_hop, &pinfo) < 0) {
7610                 nlmsg_free(msg);
7611                 return -ENOBUFS;
7612         }
7613
7614         return genlmsg_reply(msg, info);
7615 }
7616
7617 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7618 {
7619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7620         struct net_device *dev = info->user_ptr[1];
7621         u8 *dst = NULL;
7622         u8 *next_hop = NULL;
7623
7624         if (!info->attrs[NL80211_ATTR_MAC])
7625                 return -EINVAL;
7626
7627         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7628                 return -EINVAL;
7629
7630         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7631         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7632
7633         if (!rdev->ops->change_mpath)
7634                 return -EOPNOTSUPP;
7635
7636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7637                 return -EOPNOTSUPP;
7638
7639         return rdev_change_mpath(rdev, dev, dst, next_hop);
7640 }
7641
7642 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7643 {
7644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7645         struct net_device *dev = info->user_ptr[1];
7646         u8 *dst = NULL;
7647         u8 *next_hop = NULL;
7648
7649         if (!info->attrs[NL80211_ATTR_MAC])
7650                 return -EINVAL;
7651
7652         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7653                 return -EINVAL;
7654
7655         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7656         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7657
7658         if (!rdev->ops->add_mpath)
7659                 return -EOPNOTSUPP;
7660
7661         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7662                 return -EOPNOTSUPP;
7663
7664         return rdev_add_mpath(rdev, dev, dst, next_hop);
7665 }
7666
7667 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7668 {
7669         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7670         struct net_device *dev = info->user_ptr[1];
7671         u8 *dst = NULL;
7672
7673         if (info->attrs[NL80211_ATTR_MAC])
7674                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7675
7676         if (!rdev->ops->del_mpath)
7677                 return -EOPNOTSUPP;
7678
7679         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7680                 return -EOPNOTSUPP;
7681
7682         return rdev_del_mpath(rdev, dev, dst);
7683 }
7684
7685 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7686 {
7687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7688         int err;
7689         struct net_device *dev = info->user_ptr[1];
7690         struct mpath_info pinfo;
7691         struct sk_buff *msg;
7692         u8 *dst = NULL;
7693         u8 mpp[ETH_ALEN];
7694
7695         memset(&pinfo, 0, sizeof(pinfo));
7696
7697         if (!info->attrs[NL80211_ATTR_MAC])
7698                 return -EINVAL;
7699
7700         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7701
7702         if (!rdev->ops->get_mpp)
7703                 return -EOPNOTSUPP;
7704
7705         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7706                 return -EOPNOTSUPP;
7707
7708         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7709         if (err)
7710                 return err;
7711
7712         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7713         if (!msg)
7714                 return -ENOMEM;
7715
7716         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7717                                dev, dst, mpp, &pinfo) < 0) {
7718                 nlmsg_free(msg);
7719                 return -ENOBUFS;
7720         }
7721
7722         return genlmsg_reply(msg, info);
7723 }
7724
7725 static int nl80211_dump_mpp(struct sk_buff *skb,
7726                             struct netlink_callback *cb)
7727 {
7728         struct mpath_info pinfo;
7729         struct cfg80211_registered_device *rdev;
7730         struct wireless_dev *wdev;
7731         u8 dst[ETH_ALEN];
7732         u8 mpp[ETH_ALEN];
7733         int path_idx = cb->args[2];
7734         int err;
7735
7736         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7737         if (err)
7738                 return err;
7739         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7740         __acquire(&rdev->wiphy.mtx);
7741
7742         if (!rdev->ops->dump_mpp) {
7743                 err = -EOPNOTSUPP;
7744                 goto out_err;
7745         }
7746
7747         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7748                 err = -EOPNOTSUPP;
7749                 goto out_err;
7750         }
7751
7752         while (1) {
7753                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7754                                     mpp, &pinfo);
7755                 if (err == -ENOENT)
7756                         break;
7757                 if (err)
7758                         goto out_err;
7759
7760                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7761                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7762                                        wdev->netdev, dst, mpp,
7763                                        &pinfo) < 0)
7764                         goto out;
7765
7766                 path_idx++;
7767         }
7768
7769  out:
7770         cb->args[2] = path_idx;
7771         err = skb->len;
7772  out_err:
7773         wiphy_unlock(&rdev->wiphy);
7774         return err;
7775 }
7776
7777 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7778 {
7779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7780         struct net_device *dev = info->user_ptr[1];
7781         struct wireless_dev *wdev = dev->ieee80211_ptr;
7782         struct bss_parameters params;
7783         int err;
7784
7785         memset(&params, 0, sizeof(params));
7786         params.link_id = nl80211_link_id_or_invalid(info->attrs);
7787         /* default to not changing parameters */
7788         params.use_cts_prot = -1;
7789         params.use_short_preamble = -1;
7790         params.use_short_slot_time = -1;
7791         params.ap_isolate = -1;
7792         params.ht_opmode = -1;
7793         params.p2p_ctwindow = -1;
7794         params.p2p_opp_ps = -1;
7795
7796         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7797                 params.use_cts_prot =
7798                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7799         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7800                 params.use_short_preamble =
7801                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7802         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7803                 params.use_short_slot_time =
7804                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7805         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7806                 params.basic_rates =
7807                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7808                 params.basic_rates_len =
7809                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7810         }
7811         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7812                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7813         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7814                 params.ht_opmode =
7815                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7816
7817         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7818                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7819                         return -EINVAL;
7820                 params.p2p_ctwindow =
7821                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7822                 if (params.p2p_ctwindow != 0 &&
7823                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7824                         return -EINVAL;
7825         }
7826
7827         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7828                 u8 tmp;
7829
7830                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7831                         return -EINVAL;
7832                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7833                 params.p2p_opp_ps = tmp;
7834                 if (params.p2p_opp_ps &&
7835                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7836                         return -EINVAL;
7837         }
7838
7839         if (!rdev->ops->change_bss)
7840                 return -EOPNOTSUPP;
7841
7842         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7843             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7844                 return -EOPNOTSUPP;
7845
7846         wdev_lock(wdev);
7847         err = rdev_change_bss(rdev, dev, &params);
7848         wdev_unlock(wdev);
7849
7850         return err;
7851 }
7852
7853 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7854 {
7855         char *data = NULL;
7856         bool is_indoor;
7857         enum nl80211_user_reg_hint_type user_reg_hint_type;
7858         u32 owner_nlportid;
7859
7860         /*
7861          * You should only get this when cfg80211 hasn't yet initialized
7862          * completely when built-in to the kernel right between the time
7863          * window between nl80211_init() and regulatory_init(), if that is
7864          * even possible.
7865          */
7866         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7867                 return -EINPROGRESS;
7868
7869         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7870                 user_reg_hint_type =
7871                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7872         else
7873                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7874
7875         switch (user_reg_hint_type) {
7876         case NL80211_USER_REG_HINT_USER:
7877         case NL80211_USER_REG_HINT_CELL_BASE:
7878                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7879                         return -EINVAL;
7880
7881                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7882                 return regulatory_hint_user(data, user_reg_hint_type);
7883         case NL80211_USER_REG_HINT_INDOOR:
7884                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7885                         owner_nlportid = info->snd_portid;
7886                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7887                 } else {
7888                         owner_nlportid = 0;
7889                         is_indoor = true;
7890                 }
7891
7892                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7893         default:
7894                 return -EINVAL;
7895         }
7896 }
7897
7898 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7899 {
7900         return reg_reload_regdb();
7901 }
7902
7903 static int nl80211_get_mesh_config(struct sk_buff *skb,
7904                                    struct genl_info *info)
7905 {
7906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7907         struct net_device *dev = info->user_ptr[1];
7908         struct wireless_dev *wdev = dev->ieee80211_ptr;
7909         struct mesh_config cur_params;
7910         int err = 0;
7911         void *hdr;
7912         struct nlattr *pinfoattr;
7913         struct sk_buff *msg;
7914
7915         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7916                 return -EOPNOTSUPP;
7917
7918         if (!rdev->ops->get_mesh_config)
7919                 return -EOPNOTSUPP;
7920
7921         wdev_lock(wdev);
7922         /* If not connected, get default parameters */
7923         if (!wdev->u.mesh.id_len)
7924                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7925         else
7926                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7927         wdev_unlock(wdev);
7928
7929         if (err)
7930                 return err;
7931
7932         /* Draw up a netlink message to send back */
7933         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7934         if (!msg)
7935                 return -ENOMEM;
7936         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7937                              NL80211_CMD_GET_MESH_CONFIG);
7938         if (!hdr)
7939                 goto out;
7940         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7941         if (!pinfoattr)
7942                 goto nla_put_failure;
7943         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7944             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7945                         cur_params.dot11MeshRetryTimeout) ||
7946             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7947                         cur_params.dot11MeshConfirmTimeout) ||
7948             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7949                         cur_params.dot11MeshHoldingTimeout) ||
7950             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7951                         cur_params.dot11MeshMaxPeerLinks) ||
7952             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7953                        cur_params.dot11MeshMaxRetries) ||
7954             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7955                        cur_params.dot11MeshTTL) ||
7956             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7957                        cur_params.element_ttl) ||
7958             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7959                        cur_params.auto_open_plinks) ||
7960             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7961                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7962             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7963                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7964             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7965                         cur_params.path_refresh_time) ||
7966             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7967                         cur_params.min_discovery_timeout) ||
7968             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7969                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7970             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7971                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7972             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7973                         cur_params.dot11MeshHWMPperrMinInterval) ||
7974             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7975                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7976             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7977                        cur_params.dot11MeshHWMPRootMode) ||
7978             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7979                         cur_params.dot11MeshHWMPRannInterval) ||
7980             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7981                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7982             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7983                        cur_params.dot11MeshForwarding) ||
7984             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7985                         cur_params.rssi_threshold) ||
7986             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7987                         cur_params.ht_opmode) ||
7988             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7989                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7990             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7991                         cur_params.dot11MeshHWMProotInterval) ||
7992             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7993                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7994             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7995                         cur_params.power_mode) ||
7996             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7997                         cur_params.dot11MeshAwakeWindowDuration) ||
7998             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7999                         cur_params.plink_timeout) ||
8000             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8001                        cur_params.dot11MeshConnectedToMeshGate) ||
8002             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8003                        cur_params.dot11MeshNolearn) ||
8004             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8005                        cur_params.dot11MeshConnectedToAuthServer))
8006                 goto nla_put_failure;
8007         nla_nest_end(msg, pinfoattr);
8008         genlmsg_end(msg, hdr);
8009         return genlmsg_reply(msg, info);
8010
8011  nla_put_failure:
8012  out:
8013         nlmsg_free(msg);
8014         return -ENOBUFS;
8015 }
8016
8017 static const struct nla_policy
8018 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8019         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8020                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8021         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8022                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8023         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8024                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8025         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8026                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8027         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8028         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8029         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8030         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8031         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8032                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8033         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8034         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8035         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8036         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8037         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8038                 NLA_POLICY_MIN(NLA_U16, 1),
8039         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8040                 NLA_POLICY_MIN(NLA_U16, 1),
8041         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8042                 NLA_POLICY_MIN(NLA_U16, 1),
8043         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8044         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8045                 NLA_POLICY_MIN(NLA_U16, 1),
8046         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8047         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8048         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8049                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8050         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8051         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8052         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8053                 NLA_POLICY_MIN(NLA_U16, 1),
8054         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8055                 NLA_POLICY_MIN(NLA_U16, 1),
8056         [NL80211_MESHCONF_POWER_MODE] =
8057                 NLA_POLICY_RANGE(NLA_U32,
8058                                  NL80211_MESH_POWER_ACTIVE,
8059                                  NL80211_MESH_POWER_MAX),
8060         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8061         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8062         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8063         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8064         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8065 };
8066
8067 static const struct nla_policy
8068         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8069         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8070         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8071         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8072         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8073         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8074         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8075         [NL80211_MESH_SETUP_IE] =
8076                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8077                                        IEEE80211_MAX_DATA_LEN),
8078         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8079 };
8080
8081 static int nl80211_parse_mesh_config(struct genl_info *info,
8082                                      struct mesh_config *cfg,
8083                                      u32 *mask_out)
8084 {
8085         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8086         u32 mask = 0;
8087         u16 ht_opmode;
8088
8089 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8090 do {                                                                    \
8091         if (tb[attr]) {                                                 \
8092                 cfg->param = fn(tb[attr]);                              \
8093                 mask |= BIT((attr) - 1);                                \
8094         }                                                               \
8095 } while (0)
8096
8097         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8098                 return -EINVAL;
8099         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8100                 return -EINVAL;
8101
8102         /* This makes sure that there aren't more than 32 mesh config
8103          * parameters (otherwise our bitfield scheme would not work.) */
8104         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8105
8106         /* Fill in the params struct */
8107         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8108                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8109         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8110                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8111                                   nla_get_u16);
8112         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8113                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8114                                   nla_get_u16);
8115         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8116                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8117                                   nla_get_u16);
8118         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8119                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8120         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8121                                   NL80211_MESHCONF_TTL, nla_get_u8);
8122         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8123                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8124         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8125                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8126                                   nla_get_u8);
8127         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8128                                   mask,
8129                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8130                                   nla_get_u32);
8131         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8132                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8133                                   nla_get_u8);
8134         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8135                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8136                                   nla_get_u32);
8137         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8138             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8139                 return -EINVAL;
8140         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8141                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8142                                   nla_get_u16);
8143         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8144                                   mask,
8145                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8146                                   nla_get_u32);
8147         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8148             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8149              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8150                 return -EINVAL;
8151         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8152                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8153                                   nla_get_u16);
8154         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8155                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8156                                   nla_get_u16);
8157         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8158                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8159                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8160                                   nla_get_u16);
8161         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8162                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8163         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8164                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8165                                   nla_get_u16);
8166         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8167                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8168                                   nla_get_u8);
8169         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8170                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8171         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8172                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8173                                   nla_get_s32);
8174         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8175                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8176                                   nla_get_u8);
8177         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8178                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8179                                   nla_get_u8);
8180         /*
8181          * Check HT operation mode based on
8182          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8183          */
8184         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8185                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8186
8187                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8188                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8189                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8190                         return -EINVAL;
8191
8192                 /* NON_HT_STA bit is reserved, but some programs set it */
8193                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8194
8195                 cfg->ht_opmode = ht_opmode;
8196                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8197         }
8198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8199                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8200                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8201                                   nla_get_u32);
8202         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8203             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8204              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8205                 return -EINVAL;
8206         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8207                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8208                                   nla_get_u16);
8209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8210                                   mask,
8211                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8212                                   nla_get_u16);
8213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8214                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8216                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8217         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8218                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8220                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8221         if (mask_out)
8222                 *mask_out = mask;
8223
8224         return 0;
8225
8226 #undef FILL_IN_MESH_PARAM_IF_SET
8227 }
8228
8229 static int nl80211_parse_mesh_setup(struct genl_info *info,
8230                                      struct mesh_setup *setup)
8231 {
8232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8233         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8234
8235         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8236                 return -EINVAL;
8237         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8238                 return -EINVAL;
8239
8240         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8241                 setup->sync_method =
8242                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8243                  IEEE80211_SYNC_METHOD_VENDOR :
8244                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8245
8246         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8247                 setup->path_sel_proto =
8248                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8249                  IEEE80211_PATH_PROTOCOL_VENDOR :
8250                  IEEE80211_PATH_PROTOCOL_HWMP;
8251
8252         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8253                 setup->path_metric =
8254                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8255                  IEEE80211_PATH_METRIC_VENDOR :
8256                  IEEE80211_PATH_METRIC_AIRTIME;
8257
8258         if (tb[NL80211_MESH_SETUP_IE]) {
8259                 struct nlattr *ieattr =
8260                         tb[NL80211_MESH_SETUP_IE];
8261                 setup->ie = nla_data(ieattr);
8262                 setup->ie_len = nla_len(ieattr);
8263         }
8264         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8265             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8266                 return -EINVAL;
8267         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8268         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8269         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8270         if (setup->is_secure)
8271                 setup->user_mpm = true;
8272
8273         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8274                 if (!setup->user_mpm)
8275                         return -EINVAL;
8276                 setup->auth_id =
8277                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8278         }
8279
8280         return 0;
8281 }
8282
8283 static int nl80211_update_mesh_config(struct sk_buff *skb,
8284                                       struct genl_info *info)
8285 {
8286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8287         struct net_device *dev = info->user_ptr[1];
8288         struct wireless_dev *wdev = dev->ieee80211_ptr;
8289         struct mesh_config cfg;
8290         u32 mask;
8291         int err;
8292
8293         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8294                 return -EOPNOTSUPP;
8295
8296         if (!rdev->ops->update_mesh_config)
8297                 return -EOPNOTSUPP;
8298
8299         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8300         if (err)
8301                 return err;
8302
8303         wdev_lock(wdev);
8304         if (!wdev->u.mesh.id_len)
8305                 err = -ENOLINK;
8306
8307         if (!err)
8308                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8309
8310         wdev_unlock(wdev);
8311
8312         return err;
8313 }
8314
8315 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8316                               struct sk_buff *msg)
8317 {
8318         struct nlattr *nl_reg_rules;
8319         unsigned int i;
8320
8321         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8322             (regdom->dfs_region &&
8323              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8324                 goto nla_put_failure;
8325
8326         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8327         if (!nl_reg_rules)
8328                 goto nla_put_failure;
8329
8330         for (i = 0; i < regdom->n_reg_rules; i++) {
8331                 struct nlattr *nl_reg_rule;
8332                 const struct ieee80211_reg_rule *reg_rule;
8333                 const struct ieee80211_freq_range *freq_range;
8334                 const struct ieee80211_power_rule *power_rule;
8335                 unsigned int max_bandwidth_khz;
8336
8337                 reg_rule = &regdom->reg_rules[i];
8338                 freq_range = &reg_rule->freq_range;
8339                 power_rule = &reg_rule->power_rule;
8340
8341                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8342                 if (!nl_reg_rule)
8343                         goto nla_put_failure;
8344
8345                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8346                 if (!max_bandwidth_khz)
8347                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8348                                                                   reg_rule);
8349
8350                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8351                                 reg_rule->flags) ||
8352                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8353                                 freq_range->start_freq_khz) ||
8354                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8355                                 freq_range->end_freq_khz) ||
8356                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8357                                 max_bandwidth_khz) ||
8358                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8359                                 power_rule->max_antenna_gain) ||
8360                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8361                                 power_rule->max_eirp) ||
8362                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8363                                 reg_rule->dfs_cac_ms))
8364                         goto nla_put_failure;
8365
8366                 nla_nest_end(msg, nl_reg_rule);
8367         }
8368
8369         nla_nest_end(msg, nl_reg_rules);
8370         return 0;
8371
8372 nla_put_failure:
8373         return -EMSGSIZE;
8374 }
8375
8376 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8377 {
8378         const struct ieee80211_regdomain *regdom = NULL;
8379         struct cfg80211_registered_device *rdev;
8380         struct wiphy *wiphy = NULL;
8381         struct sk_buff *msg;
8382         int err = -EMSGSIZE;
8383         void *hdr;
8384
8385         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8386         if (!msg)
8387                 return -ENOBUFS;
8388
8389         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8390                              NL80211_CMD_GET_REG);
8391         if (!hdr)
8392                 goto put_failure;
8393
8394         rtnl_lock();
8395
8396         if (info->attrs[NL80211_ATTR_WIPHY]) {
8397                 bool self_managed;
8398
8399                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8400                 if (IS_ERR(rdev)) {
8401                         err = PTR_ERR(rdev);
8402                         goto nla_put_failure;
8403                 }
8404
8405                 wiphy = &rdev->wiphy;
8406                 self_managed = wiphy->regulatory_flags &
8407                                REGULATORY_WIPHY_SELF_MANAGED;
8408
8409                 rcu_read_lock();
8410
8411                 regdom = get_wiphy_regdom(wiphy);
8412
8413                 /* a self-managed-reg device must have a private regdom */
8414                 if (WARN_ON(!regdom && self_managed)) {
8415                         err = -EINVAL;
8416                         goto nla_put_failure_rcu;
8417                 }
8418
8419                 if (regdom &&
8420                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8421                         goto nla_put_failure_rcu;
8422         } else {
8423                 rcu_read_lock();
8424         }
8425
8426         if (!wiphy && reg_last_request_cell_base() &&
8427             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8428                         NL80211_USER_REG_HINT_CELL_BASE))
8429                 goto nla_put_failure_rcu;
8430
8431         if (!regdom)
8432                 regdom = rcu_dereference(cfg80211_regdomain);
8433
8434         if (nl80211_put_regdom(regdom, msg))
8435                 goto nla_put_failure_rcu;
8436
8437         rcu_read_unlock();
8438
8439         genlmsg_end(msg, hdr);
8440         rtnl_unlock();
8441         return genlmsg_reply(msg, info);
8442
8443 nla_put_failure_rcu:
8444         rcu_read_unlock();
8445 nla_put_failure:
8446         rtnl_unlock();
8447 put_failure:
8448         nlmsg_free(msg);
8449         return err;
8450 }
8451
8452 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8453                                u32 seq, int flags, struct wiphy *wiphy,
8454                                const struct ieee80211_regdomain *regdom)
8455 {
8456         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8457                                    NL80211_CMD_GET_REG);
8458
8459         if (!hdr)
8460                 return -1;
8461
8462         genl_dump_check_consistent(cb, hdr);
8463
8464         if (nl80211_put_regdom(regdom, msg))
8465                 goto nla_put_failure;
8466
8467         if (!wiphy && reg_last_request_cell_base() &&
8468             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8469                         NL80211_USER_REG_HINT_CELL_BASE))
8470                 goto nla_put_failure;
8471
8472         if (wiphy &&
8473             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8474                 goto nla_put_failure;
8475
8476         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8477             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8478                 goto nla_put_failure;
8479
8480         genlmsg_end(msg, hdr);
8481         return 0;
8482
8483 nla_put_failure:
8484         genlmsg_cancel(msg, hdr);
8485         return -EMSGSIZE;
8486 }
8487
8488 static int nl80211_get_reg_dump(struct sk_buff *skb,
8489                                 struct netlink_callback *cb)
8490 {
8491         const struct ieee80211_regdomain *regdom = NULL;
8492         struct cfg80211_registered_device *rdev;
8493         int err, reg_idx, start = cb->args[2];
8494
8495         rcu_read_lock();
8496
8497         if (cfg80211_regdomain && start == 0) {
8498                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8499                                           NLM_F_MULTI, NULL,
8500                                           rcu_dereference(cfg80211_regdomain));
8501                 if (err < 0)
8502                         goto out_err;
8503         }
8504
8505         /* the global regdom is idx 0 */
8506         reg_idx = 1;
8507         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8508                 regdom = get_wiphy_regdom(&rdev->wiphy);
8509                 if (!regdom)
8510                         continue;
8511
8512                 if (++reg_idx <= start)
8513                         continue;
8514
8515                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8516                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8517                 if (err < 0) {
8518                         reg_idx--;
8519                         break;
8520                 }
8521         }
8522
8523         cb->args[2] = reg_idx;
8524         err = skb->len;
8525 out_err:
8526         rcu_read_unlock();
8527         return err;
8528 }
8529
8530 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8531 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8532         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8533         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8534         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8535         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8536         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8537         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8538         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8539 };
8540
8541 static int parse_reg_rule(struct nlattr *tb[],
8542         struct ieee80211_reg_rule *reg_rule)
8543 {
8544         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8545         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8546
8547         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8548                 return -EINVAL;
8549         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8550                 return -EINVAL;
8551         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8552                 return -EINVAL;
8553         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8554                 return -EINVAL;
8555         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8556                 return -EINVAL;
8557
8558         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8559
8560         freq_range->start_freq_khz =
8561                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8562         freq_range->end_freq_khz =
8563                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8564         freq_range->max_bandwidth_khz =
8565                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8566
8567         power_rule->max_eirp =
8568                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8569
8570         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8571                 power_rule->max_antenna_gain =
8572                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8573
8574         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8575                 reg_rule->dfs_cac_ms =
8576                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8577
8578         return 0;
8579 }
8580
8581 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8582 {
8583         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8584         struct nlattr *nl_reg_rule;
8585         char *alpha2;
8586         int rem_reg_rules, r;
8587         u32 num_rules = 0, rule_idx = 0;
8588         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8589         struct ieee80211_regdomain *rd;
8590
8591         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8592                 return -EINVAL;
8593
8594         if (!info->attrs[NL80211_ATTR_REG_RULES])
8595                 return -EINVAL;
8596
8597         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8598
8599         if (info->attrs[NL80211_ATTR_DFS_REGION])
8600                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8601
8602         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8603                             rem_reg_rules) {
8604                 num_rules++;
8605                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8606                         return -EINVAL;
8607         }
8608
8609         rtnl_lock();
8610         if (!reg_is_valid_request(alpha2)) {
8611                 r = -EINVAL;
8612                 goto out;
8613         }
8614
8615         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8616         if (!rd) {
8617                 r = -ENOMEM;
8618                 goto out;
8619         }
8620
8621         rd->n_reg_rules = num_rules;
8622         rd->alpha2[0] = alpha2[0];
8623         rd->alpha2[1] = alpha2[1];
8624
8625         /*
8626          * Disable DFS master mode if the DFS region was
8627          * not supported or known on this kernel.
8628          */
8629         if (reg_supported_dfs_region(dfs_region))
8630                 rd->dfs_region = dfs_region;
8631
8632         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8633                             rem_reg_rules) {
8634                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8635                                                 nl_reg_rule, reg_rule_policy,
8636                                                 info->extack);
8637                 if (r)
8638                         goto bad_reg;
8639                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8640                 if (r)
8641                         goto bad_reg;
8642
8643                 rule_idx++;
8644
8645                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8646                         r = -EINVAL;
8647                         goto bad_reg;
8648                 }
8649         }
8650
8651         r = set_regdom(rd, REGD_SOURCE_CRDA);
8652         /* set_regdom takes ownership of rd */
8653         rd = NULL;
8654  bad_reg:
8655         kfree(rd);
8656  out:
8657         rtnl_unlock();
8658         return r;
8659 }
8660 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8661
8662 static int validate_scan_freqs(struct nlattr *freqs)
8663 {
8664         struct nlattr *attr1, *attr2;
8665         int n_channels = 0, tmp1, tmp2;
8666
8667         nla_for_each_nested(attr1, freqs, tmp1)
8668                 if (nla_len(attr1) != sizeof(u32))
8669                         return 0;
8670
8671         nla_for_each_nested(attr1, freqs, tmp1) {
8672                 n_channels++;
8673                 /*
8674                  * Some hardware has a limited channel list for
8675                  * scanning, and it is pretty much nonsensical
8676                  * to scan for a channel twice, so disallow that
8677                  * and don't require drivers to check that the
8678                  * channel list they get isn't longer than what
8679                  * they can scan, as long as they can scan all
8680                  * the channels they registered at once.
8681                  */
8682                 nla_for_each_nested(attr2, freqs, tmp2)
8683                         if (attr1 != attr2 &&
8684                             nla_get_u32(attr1) == nla_get_u32(attr2))
8685                                 return 0;
8686         }
8687
8688         return n_channels;
8689 }
8690
8691 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8692 {
8693         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8694 }
8695
8696 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8697                             struct cfg80211_bss_selection *bss_select)
8698 {
8699         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8700         struct nlattr *nest;
8701         int err;
8702         bool found = false;
8703         int i;
8704
8705         /* only process one nested attribute */
8706         nest = nla_data(nla);
8707         if (!nla_ok(nest, nla_len(nest)))
8708                 return -EINVAL;
8709
8710         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8711                                           nest, nl80211_bss_select_policy,
8712                                           NULL);
8713         if (err)
8714                 return err;
8715
8716         /* only one attribute may be given */
8717         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8718                 if (attr[i]) {
8719                         if (found)
8720                                 return -EINVAL;
8721                         found = true;
8722                 }
8723         }
8724
8725         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8726
8727         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8728                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8729
8730         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8731                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8732                 bss_select->param.band_pref =
8733                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8734                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8735                         return -EINVAL;
8736         }
8737
8738         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8739                 struct nl80211_bss_select_rssi_adjust *adj_param;
8740
8741                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8742                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8743                 bss_select->param.adjust.band = adj_param->band;
8744                 bss_select->param.adjust.delta = adj_param->delta;
8745                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8746                         return -EINVAL;
8747         }
8748
8749         /* user-space did not provide behaviour attribute */
8750         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8751                 return -EINVAL;
8752
8753         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8754                 return -EINVAL;
8755
8756         return 0;
8757 }
8758
8759 int nl80211_parse_random_mac(struct nlattr **attrs,
8760                              u8 *mac_addr, u8 *mac_addr_mask)
8761 {
8762         int i;
8763
8764         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8765                 eth_zero_addr(mac_addr);
8766                 eth_zero_addr(mac_addr_mask);
8767                 mac_addr[0] = 0x2;
8768                 mac_addr_mask[0] = 0x3;
8769
8770                 return 0;
8771         }
8772
8773         /* need both or none */
8774         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8775                 return -EINVAL;
8776
8777         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8778         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8779
8780         /* don't allow or configure an mcast address */
8781         if (!is_multicast_ether_addr(mac_addr_mask) ||
8782             is_multicast_ether_addr(mac_addr))
8783                 return -EINVAL;
8784
8785         /*
8786          * allow users to pass a MAC address that has bits set outside
8787          * of the mask, but don't bother drivers with having to deal
8788          * with such bits
8789          */
8790         for (i = 0; i < ETH_ALEN; i++)
8791                 mac_addr[i] &= mac_addr_mask[i];
8792
8793         return 0;
8794 }
8795
8796 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8797                                               struct ieee80211_channel *chan)
8798 {
8799         unsigned int link_id;
8800         bool all_ok = true;
8801
8802         ASSERT_WDEV_LOCK(wdev);
8803
8804         if (!cfg80211_beaconing_iface_active(wdev))
8805                 return true;
8806
8807         /*
8808          * FIXME: check if we have a free HW resource/link for chan
8809          *
8810          * This, as well as the FIXME below, requires knowing the link
8811          * capabilities of the hardware.
8812          */
8813
8814         /* we cannot leave radar channels */
8815         for_each_valid_link(wdev, link_id) {
8816                 struct cfg80211_chan_def *chandef;
8817
8818                 chandef = wdev_chandef(wdev, link_id);
8819                 if (!chandef)
8820                         continue;
8821
8822                 /*
8823                  * FIXME: don't require all_ok, but rather check only the
8824                  *        correct HW resource/link onto which 'chan' falls,
8825                  *        as only that link leaves the channel for doing
8826                  *        the off-channel operation.
8827                  */
8828
8829                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
8830                         all_ok = false;
8831         }
8832
8833         if (all_ok)
8834                 return true;
8835
8836         return regulatory_pre_cac_allowed(wdev->wiphy);
8837 }
8838
8839 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8840                                     enum nl80211_ext_feature_index feat)
8841 {
8842         if (!(flags & flag))
8843                 return true;
8844         if (wiphy_ext_feature_isset(wiphy, feat))
8845                 return true;
8846         return false;
8847 }
8848
8849 static int
8850 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8851                          void *request, struct nlattr **attrs,
8852                          bool is_sched_scan)
8853 {
8854         u8 *mac_addr, *mac_addr_mask;
8855         u32 *flags;
8856         enum nl80211_feature_flags randomness_flag;
8857
8858         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8859                 return 0;
8860
8861         if (is_sched_scan) {
8862                 struct cfg80211_sched_scan_request *req = request;
8863
8864                 randomness_flag = wdev ?
8865                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8866                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8867                 flags = &req->flags;
8868                 mac_addr = req->mac_addr;
8869                 mac_addr_mask = req->mac_addr_mask;
8870         } else {
8871                 struct cfg80211_scan_request *req = request;
8872
8873                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8874                 flags = &req->flags;
8875                 mac_addr = req->mac_addr;
8876                 mac_addr_mask = req->mac_addr_mask;
8877         }
8878
8879         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8880
8881         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8882              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8883             !nl80211_check_scan_feat(wiphy, *flags,
8884                                      NL80211_SCAN_FLAG_LOW_SPAN,
8885                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8886             !nl80211_check_scan_feat(wiphy, *flags,
8887                                      NL80211_SCAN_FLAG_LOW_POWER,
8888                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8889             !nl80211_check_scan_feat(wiphy, *flags,
8890                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8891                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8892             !nl80211_check_scan_feat(wiphy, *flags,
8893                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8894                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8895             !nl80211_check_scan_feat(wiphy, *flags,
8896                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8897                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8898             !nl80211_check_scan_feat(wiphy, *flags,
8899                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8900                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8901             !nl80211_check_scan_feat(wiphy, *flags,
8902                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8903                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8904             !nl80211_check_scan_feat(wiphy, *flags,
8905                                      NL80211_SCAN_FLAG_RANDOM_SN,
8906                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8907             !nl80211_check_scan_feat(wiphy, *flags,
8908                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8909                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8910                 return -EOPNOTSUPP;
8911
8912         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8913                 int err;
8914
8915                 if (!(wiphy->features & randomness_flag) ||
8916                     (wdev && wdev->connected))
8917                         return -EOPNOTSUPP;
8918
8919                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8920                 if (err)
8921                         return err;
8922         }
8923
8924         return 0;
8925 }
8926
8927 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8928 {
8929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8930         struct wireless_dev *wdev = info->user_ptr[1];
8931         struct cfg80211_scan_request *request;
8932         struct nlattr *scan_freqs = NULL;
8933         bool scan_freqs_khz = false;
8934         struct nlattr *attr;
8935         struct wiphy *wiphy;
8936         int err, tmp, n_ssids = 0, n_channels, i;
8937         size_t ie_len;
8938
8939         wiphy = &rdev->wiphy;
8940
8941         if (wdev->iftype == NL80211_IFTYPE_NAN)
8942                 return -EOPNOTSUPP;
8943
8944         if (!rdev->ops->scan)
8945                 return -EOPNOTSUPP;
8946
8947         if (rdev->scan_req || rdev->scan_msg)
8948                 return -EBUSY;
8949
8950         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8951                 if (!wiphy_ext_feature_isset(wiphy,
8952                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8953                         return -EOPNOTSUPP;
8954                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8955                 scan_freqs_khz = true;
8956         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8957                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8958
8959         if (scan_freqs) {
8960                 n_channels = validate_scan_freqs(scan_freqs);
8961                 if (!n_channels)
8962                         return -EINVAL;
8963         } else {
8964                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8965         }
8966
8967         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8968                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8969                         n_ssids++;
8970
8971         if (n_ssids > wiphy->max_scan_ssids)
8972                 return -EINVAL;
8973
8974         if (info->attrs[NL80211_ATTR_IE])
8975                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8976         else
8977                 ie_len = 0;
8978
8979         if (ie_len > wiphy->max_scan_ie_len)
8980                 return -EINVAL;
8981
8982         request = kzalloc(sizeof(*request)
8983                         + sizeof(*request->ssids) * n_ssids
8984                         + sizeof(*request->channels) * n_channels
8985                         + ie_len, GFP_KERNEL);
8986         if (!request)
8987                 return -ENOMEM;
8988
8989         if (n_ssids)
8990                 request->ssids = (void *)&request->channels[n_channels];
8991         request->n_ssids = n_ssids;
8992         if (ie_len) {
8993                 if (n_ssids)
8994                         request->ie = (void *)(request->ssids + n_ssids);
8995                 else
8996                         request->ie = (void *)(request->channels + n_channels);
8997         }
8998
8999         i = 0;
9000         if (scan_freqs) {
9001                 /* user specified, bail out if channel not found */
9002                 nla_for_each_nested(attr, scan_freqs, tmp) {
9003                         struct ieee80211_channel *chan;
9004                         int freq = nla_get_u32(attr);
9005
9006                         if (!scan_freqs_khz)
9007                                 freq = MHZ_TO_KHZ(freq);
9008
9009                         chan = ieee80211_get_channel_khz(wiphy, freq);
9010                         if (!chan) {
9011                                 err = -EINVAL;
9012                                 goto out_free;
9013                         }
9014
9015                         /* ignore disabled channels */
9016                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9017                                 continue;
9018
9019                         request->channels[i] = chan;
9020                         i++;
9021                 }
9022         } else {
9023                 enum nl80211_band band;
9024
9025                 /* all channels */
9026                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9027                         int j;
9028
9029                         if (!wiphy->bands[band])
9030                                 continue;
9031                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9032                                 struct ieee80211_channel *chan;
9033
9034                                 chan = &wiphy->bands[band]->channels[j];
9035
9036                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9037                                         continue;
9038
9039                                 request->channels[i] = chan;
9040                                 i++;
9041                         }
9042                 }
9043         }
9044
9045         if (!i) {
9046                 err = -EINVAL;
9047                 goto out_free;
9048         }
9049
9050         request->n_channels = i;
9051
9052         wdev_lock(wdev);
9053         for (i = 0; i < request->n_channels; i++) {
9054                 struct ieee80211_channel *chan = request->channels[i];
9055
9056                 /* if we can go off-channel to the target channel we're good */
9057                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9058                         continue;
9059
9060                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9061                         wdev_unlock(wdev);
9062                         err = -EBUSY;
9063                         goto out_free;
9064                 }
9065         }
9066         wdev_unlock(wdev);
9067
9068         i = 0;
9069         if (n_ssids) {
9070                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9071                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9072                                 err = -EINVAL;
9073                                 goto out_free;
9074                         }
9075                         request->ssids[i].ssid_len = nla_len(attr);
9076                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9077                         i++;
9078                 }
9079         }
9080
9081         if (info->attrs[NL80211_ATTR_IE]) {
9082                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9083                 memcpy((void *)request->ie,
9084                        nla_data(info->attrs[NL80211_ATTR_IE]),
9085                        request->ie_len);
9086         }
9087
9088         for (i = 0; i < NUM_NL80211_BANDS; i++)
9089                 if (wiphy->bands[i])
9090                         request->rates[i] =
9091                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9092
9093         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9094                 nla_for_each_nested(attr,
9095                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9096                                     tmp) {
9097                         enum nl80211_band band = nla_type(attr);
9098
9099                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9100                                 err = -EINVAL;
9101                                 goto out_free;
9102                         }
9103
9104                         if (!wiphy->bands[band])
9105                                 continue;
9106
9107                         err = ieee80211_get_ratemask(wiphy->bands[band],
9108                                                      nla_data(attr),
9109                                                      nla_len(attr),
9110                                                      &request->rates[band]);
9111                         if (err)
9112                                 goto out_free;
9113                 }
9114         }
9115
9116         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9117                 request->duration =
9118                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9119                 request->duration_mandatory =
9120                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9121         }
9122
9123         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9124                                        false);
9125         if (err)
9126                 goto out_free;
9127
9128         request->no_cck =
9129                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9130
9131         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9132          * BSSID to scan for. This was problematic because that same attribute
9133          * was already used for another purpose (local random MAC address). The
9134          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9135          * compatibility with older userspace components, also use the
9136          * NL80211_ATTR_MAC value here if it can be determined to be used for
9137          * the specific BSSID use case instead of the random MAC address
9138          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9139          */
9140         if (info->attrs[NL80211_ATTR_BSSID])
9141                 memcpy(request->bssid,
9142                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9143         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9144                  info->attrs[NL80211_ATTR_MAC])
9145                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9146                        ETH_ALEN);
9147         else
9148                 eth_broadcast_addr(request->bssid);
9149
9150         request->wdev = wdev;
9151         request->wiphy = &rdev->wiphy;
9152         request->scan_start = jiffies;
9153
9154         rdev->scan_req = request;
9155         err = cfg80211_scan(rdev);
9156
9157         if (err)
9158                 goto out_free;
9159
9160         nl80211_send_scan_start(rdev, wdev);
9161         dev_hold(wdev->netdev);
9162
9163         return 0;
9164
9165  out_free:
9166         rdev->scan_req = NULL;
9167         kfree(request);
9168
9169         return err;
9170 }
9171
9172 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9173 {
9174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9175         struct wireless_dev *wdev = info->user_ptr[1];
9176
9177         if (!rdev->ops->abort_scan)
9178                 return -EOPNOTSUPP;
9179
9180         if (rdev->scan_msg)
9181                 return 0;
9182
9183         if (!rdev->scan_req)
9184                 return -ENOENT;
9185
9186         rdev_abort_scan(rdev, wdev);
9187         return 0;
9188 }
9189
9190 static int
9191 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9192                                struct cfg80211_sched_scan_request *request,
9193                                struct nlattr **attrs)
9194 {
9195         int tmp, err, i = 0;
9196         struct nlattr *attr;
9197
9198         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9199                 u32 interval;
9200
9201                 /*
9202                  * If scan plans are not specified,
9203                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9204                  * case one scan plan will be set with the specified scan
9205                  * interval and infinite number of iterations.
9206                  */
9207                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9208                 if (!interval)
9209                         return -EINVAL;
9210
9211                 request->scan_plans[0].interval =
9212                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9213                 if (!request->scan_plans[0].interval)
9214                         return -EINVAL;
9215
9216                 if (request->scan_plans[0].interval >
9217                     wiphy->max_sched_scan_plan_interval)
9218                         request->scan_plans[0].interval =
9219                                 wiphy->max_sched_scan_plan_interval;
9220
9221                 return 0;
9222         }
9223
9224         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9225                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9226
9227                 if (WARN_ON(i >= n_plans))
9228                         return -EINVAL;
9229
9230                 err = nla_parse_nested_deprecated(plan,
9231                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9232                                                   attr, nl80211_plan_policy,
9233                                                   NULL);
9234                 if (err)
9235                         return err;
9236
9237                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9238                         return -EINVAL;
9239
9240                 request->scan_plans[i].interval =
9241                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9242                 if (!request->scan_plans[i].interval ||
9243                     request->scan_plans[i].interval >
9244                     wiphy->max_sched_scan_plan_interval)
9245                         return -EINVAL;
9246
9247                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9248                         request->scan_plans[i].iterations =
9249                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9250                         if (!request->scan_plans[i].iterations ||
9251                             (request->scan_plans[i].iterations >
9252                              wiphy->max_sched_scan_plan_iterations))
9253                                 return -EINVAL;
9254                 } else if (i < n_plans - 1) {
9255                         /*
9256                          * All scan plans but the last one must specify
9257                          * a finite number of iterations
9258                          */
9259                         return -EINVAL;
9260                 }
9261
9262                 i++;
9263         }
9264
9265         /*
9266          * The last scan plan must not specify the number of
9267          * iterations, it is supposed to run infinitely
9268          */
9269         if (request->scan_plans[n_plans - 1].iterations)
9270                 return  -EINVAL;
9271
9272         return 0;
9273 }
9274
9275 static int
9276 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9277                                        struct cfg80211_match_set *match_sets,
9278                                        struct nlattr *tb_band_rssi,
9279                                        s32 rssi_thold)
9280 {
9281         struct nlattr *attr;
9282         int i, tmp, ret = 0;
9283
9284         if (!wiphy_ext_feature_isset(wiphy,
9285                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9286                 if (tb_band_rssi)
9287                         ret = -EOPNOTSUPP;
9288                 else
9289                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9290                                 match_sets->per_band_rssi_thold[i] =
9291                                         NL80211_SCAN_RSSI_THOLD_OFF;
9292                 return ret;
9293         }
9294
9295         for (i = 0; i < NUM_NL80211_BANDS; i++)
9296                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9297
9298         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9299                 enum nl80211_band band = nla_type(attr);
9300
9301                 if (band < 0 || band >= NUM_NL80211_BANDS)
9302                         return -EINVAL;
9303
9304                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9305         }
9306
9307         return 0;
9308 }
9309
9310 static struct cfg80211_sched_scan_request *
9311 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9312                          struct nlattr **attrs, int max_match_sets)
9313 {
9314         struct cfg80211_sched_scan_request *request;
9315         struct nlattr *attr;
9316         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9317         enum nl80211_band band;
9318         size_t ie_len;
9319         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9320         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9321
9322         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9323                 n_channels = validate_scan_freqs(
9324                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9325                 if (!n_channels)
9326                         return ERR_PTR(-EINVAL);
9327         } else {
9328                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9329         }
9330
9331         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9332                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9333                                     tmp)
9334                         n_ssids++;
9335
9336         if (n_ssids > wiphy->max_sched_scan_ssids)
9337                 return ERR_PTR(-EINVAL);
9338
9339         /*
9340          * First, count the number of 'real' matchsets. Due to an issue with
9341          * the old implementation, matchsets containing only the RSSI attribute
9342          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9343          * RSSI for all matchsets, rather than their own matchset for reporting
9344          * all APs with a strong RSSI. This is needed to be compatible with
9345          * older userspace that treated a matchset with only the RSSI as the
9346          * global RSSI for all other matchsets - if there are other matchsets.
9347          */
9348         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9349                 nla_for_each_nested(attr,
9350                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9351                                     tmp) {
9352                         struct nlattr *rssi;
9353
9354                         err = nla_parse_nested_deprecated(tb,
9355                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9356                                                           attr,
9357                                                           nl80211_match_policy,
9358                                                           NULL);
9359                         if (err)
9360                                 return ERR_PTR(err);
9361
9362                         /* SSID and BSSID are mutually exclusive */
9363                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9364                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9365                                 return ERR_PTR(-EINVAL);
9366
9367                         /* add other standalone attributes here */
9368                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9369                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9370                                 n_match_sets++;
9371                                 continue;
9372                         }
9373                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9374                         if (rssi)
9375                                 default_match_rssi = nla_get_s32(rssi);
9376                 }
9377         }
9378
9379         /* However, if there's no other matchset, add the RSSI one */
9380         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9381                 n_match_sets = 1;
9382
9383         if (n_match_sets > max_match_sets)
9384                 return ERR_PTR(-EINVAL);
9385
9386         if (attrs[NL80211_ATTR_IE])
9387                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9388         else
9389                 ie_len = 0;
9390
9391         if (ie_len > wiphy->max_sched_scan_ie_len)
9392                 return ERR_PTR(-EINVAL);
9393
9394         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9395                 /*
9396                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9397                  * each scan plan already specifies its own interval
9398                  */
9399                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9400                         return ERR_PTR(-EINVAL);
9401
9402                 nla_for_each_nested(attr,
9403                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9404                         n_plans++;
9405         } else {
9406                 /*
9407                  * The scan interval attribute is kept for backward
9408                  * compatibility. If no scan plans are specified and sched scan
9409                  * interval is specified, one scan plan will be set with this
9410                  * scan interval and infinite number of iterations.
9411                  */
9412                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9413                         return ERR_PTR(-EINVAL);
9414
9415                 n_plans = 1;
9416         }
9417
9418         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9419                 return ERR_PTR(-EINVAL);
9420
9421         if (!wiphy_ext_feature_isset(
9422                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9423             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9424              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9425                 return ERR_PTR(-EINVAL);
9426
9427         request = kzalloc(sizeof(*request)
9428                         + sizeof(*request->ssids) * n_ssids
9429                         + sizeof(*request->match_sets) * n_match_sets
9430                         + sizeof(*request->scan_plans) * n_plans
9431                         + sizeof(*request->channels) * n_channels
9432                         + ie_len, GFP_KERNEL);
9433         if (!request)
9434                 return ERR_PTR(-ENOMEM);
9435
9436         if (n_ssids)
9437                 request->ssids = (void *)&request->channels[n_channels];
9438         request->n_ssids = n_ssids;
9439         if (ie_len) {
9440                 if (n_ssids)
9441                         request->ie = (void *)(request->ssids + n_ssids);
9442                 else
9443                         request->ie = (void *)(request->channels + n_channels);
9444         }
9445
9446         if (n_match_sets) {
9447                 if (request->ie)
9448                         request->match_sets = (void *)(request->ie + ie_len);
9449                 else if (n_ssids)
9450                         request->match_sets =
9451                                 (void *)(request->ssids + n_ssids);
9452                 else
9453                         request->match_sets =
9454                                 (void *)(request->channels + n_channels);
9455         }
9456         request->n_match_sets = n_match_sets;
9457
9458         if (n_match_sets)
9459                 request->scan_plans = (void *)(request->match_sets +
9460                                                n_match_sets);
9461         else if (request->ie)
9462                 request->scan_plans = (void *)(request->ie + ie_len);
9463         else if (n_ssids)
9464                 request->scan_plans = (void *)(request->ssids + n_ssids);
9465         else
9466                 request->scan_plans = (void *)(request->channels + n_channels);
9467
9468         request->n_scan_plans = n_plans;
9469
9470         i = 0;
9471         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9472                 /* user specified, bail out if channel not found */
9473                 nla_for_each_nested(attr,
9474                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9475                                     tmp) {
9476                         struct ieee80211_channel *chan;
9477
9478                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9479
9480                         if (!chan) {
9481                                 err = -EINVAL;
9482                                 goto out_free;
9483                         }
9484
9485                         /* ignore disabled channels */
9486                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9487                                 continue;
9488
9489                         request->channels[i] = chan;
9490                         i++;
9491                 }
9492         } else {
9493                 /* all channels */
9494                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9495                         int j;
9496
9497                         if (!wiphy->bands[band])
9498                                 continue;
9499                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9500                                 struct ieee80211_channel *chan;
9501
9502                                 chan = &wiphy->bands[band]->channels[j];
9503
9504                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9505                                         continue;
9506
9507                                 request->channels[i] = chan;
9508                                 i++;
9509                         }
9510                 }
9511         }
9512
9513         if (!i) {
9514                 err = -EINVAL;
9515                 goto out_free;
9516         }
9517
9518         request->n_channels = i;
9519
9520         i = 0;
9521         if (n_ssids) {
9522                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9523                                     tmp) {
9524                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9525                                 err = -EINVAL;
9526                                 goto out_free;
9527                         }
9528                         request->ssids[i].ssid_len = nla_len(attr);
9529                         memcpy(request->ssids[i].ssid, nla_data(attr),
9530                                nla_len(attr));
9531                         i++;
9532                 }
9533         }
9534
9535         i = 0;
9536         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9537                 nla_for_each_nested(attr,
9538                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9539                                     tmp) {
9540                         struct nlattr *ssid, *bssid, *rssi;
9541
9542                         err = nla_parse_nested_deprecated(tb,
9543                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9544                                                           attr,
9545                                                           nl80211_match_policy,
9546                                                           NULL);
9547                         if (err)
9548                                 goto out_free;
9549                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9550                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9551
9552                         if (!ssid && !bssid) {
9553                                 i++;
9554                                 continue;
9555                         }
9556
9557                         if (WARN_ON(i >= n_match_sets)) {
9558                                 /* this indicates a programming error,
9559                                  * the loop above should have verified
9560                                  * things properly
9561                                  */
9562                                 err = -EINVAL;
9563                                 goto out_free;
9564                         }
9565
9566                         if (ssid) {
9567                                 memcpy(request->match_sets[i].ssid.ssid,
9568                                        nla_data(ssid), nla_len(ssid));
9569                                 request->match_sets[i].ssid.ssid_len =
9570                                         nla_len(ssid);
9571                         }
9572                         if (bssid)
9573                                 memcpy(request->match_sets[i].bssid,
9574                                        nla_data(bssid), ETH_ALEN);
9575
9576                         /* special attribute - old implementation w/a */
9577                         request->match_sets[i].rssi_thold = default_match_rssi;
9578                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9579                         if (rssi)
9580                                 request->match_sets[i].rssi_thold =
9581                                         nla_get_s32(rssi);
9582
9583                         /* Parse per band RSSI attribute */
9584                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9585                                 &request->match_sets[i],
9586                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9587                                 request->match_sets[i].rssi_thold);
9588                         if (err)
9589                                 goto out_free;
9590
9591                         i++;
9592                 }
9593
9594                 /* there was no other matchset, so the RSSI one is alone */
9595                 if (i == 0 && n_match_sets)
9596                         request->match_sets[0].rssi_thold = default_match_rssi;
9597
9598                 request->min_rssi_thold = INT_MAX;
9599                 for (i = 0; i < n_match_sets; i++)
9600                         request->min_rssi_thold =
9601                                 min(request->match_sets[i].rssi_thold,
9602                                     request->min_rssi_thold);
9603         } else {
9604                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9605         }
9606
9607         if (ie_len) {
9608                 request->ie_len = ie_len;
9609                 memcpy((void *)request->ie,
9610                        nla_data(attrs[NL80211_ATTR_IE]),
9611                        request->ie_len);
9612         }
9613
9614         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9615         if (err)
9616                 goto out_free;
9617
9618         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9619                 request->delay =
9620                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9621
9622         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9623                 request->relative_rssi = nla_get_s8(
9624                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9625                 request->relative_rssi_set = true;
9626         }
9627
9628         if (request->relative_rssi_set &&
9629             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9630                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9631
9632                 rssi_adjust = nla_data(
9633                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9634                 request->rssi_adjust.band = rssi_adjust->band;
9635                 request->rssi_adjust.delta = rssi_adjust->delta;
9636                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9637                         err = -EINVAL;
9638                         goto out_free;
9639                 }
9640         }
9641
9642         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9643         if (err)
9644                 goto out_free;
9645
9646         request->scan_start = jiffies;
9647
9648         return request;
9649
9650 out_free:
9651         kfree(request);
9652         return ERR_PTR(err);
9653 }
9654
9655 static int nl80211_start_sched_scan(struct sk_buff *skb,
9656                                     struct genl_info *info)
9657 {
9658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9659         struct net_device *dev = info->user_ptr[1];
9660         struct wireless_dev *wdev = dev->ieee80211_ptr;
9661         struct cfg80211_sched_scan_request *sched_scan_req;
9662         bool want_multi;
9663         int err;
9664
9665         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9666                 return -EOPNOTSUPP;
9667
9668         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9669         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9670         if (err)
9671                 return err;
9672
9673         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9674                                                   info->attrs,
9675                                                   rdev->wiphy.max_match_sets);
9676
9677         err = PTR_ERR_OR_ZERO(sched_scan_req);
9678         if (err)
9679                 goto out_err;
9680
9681         /* leave request id zero for legacy request
9682          * or if driver does not support multi-scheduled scan
9683          */
9684         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9685                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9686
9687         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9688         if (err)
9689                 goto out_free;
9690
9691         sched_scan_req->dev = dev;
9692         sched_scan_req->wiphy = &rdev->wiphy;
9693
9694         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9695                 sched_scan_req->owner_nlportid = info->snd_portid;
9696
9697         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9698
9699         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9700         return 0;
9701
9702 out_free:
9703         kfree(sched_scan_req);
9704 out_err:
9705         return err;
9706 }
9707
9708 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9709                                    struct genl_info *info)
9710 {
9711         struct cfg80211_sched_scan_request *req;
9712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9713         u64 cookie;
9714
9715         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9716                 return -EOPNOTSUPP;
9717
9718         if (info->attrs[NL80211_ATTR_COOKIE]) {
9719                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9720                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9721         }
9722
9723         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9724                                      struct cfg80211_sched_scan_request,
9725                                      list);
9726         if (!req || req->reqid ||
9727             (req->owner_nlportid &&
9728              req->owner_nlportid != info->snd_portid))
9729                 return -ENOENT;
9730
9731         return cfg80211_stop_sched_scan_req(rdev, req, false);
9732 }
9733
9734 static int nl80211_start_radar_detection(struct sk_buff *skb,
9735                                          struct genl_info *info)
9736 {
9737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9738         struct net_device *dev = info->user_ptr[1];
9739         struct wireless_dev *wdev = dev->ieee80211_ptr;
9740         struct wiphy *wiphy = wdev->wiphy;
9741         struct cfg80211_chan_def chandef;
9742         enum nl80211_dfs_regions dfs_region;
9743         unsigned int cac_time_ms;
9744         int err = -EINVAL;
9745
9746         flush_delayed_work(&rdev->dfs_update_channels_wk);
9747
9748         wiphy_lock(wiphy);
9749
9750         dfs_region = reg_get_dfs_region(wiphy);
9751         if (dfs_region == NL80211_DFS_UNSET)
9752                 goto unlock;
9753
9754         err = nl80211_parse_chandef(rdev, info, &chandef);
9755         if (err)
9756                 goto unlock;
9757
9758         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9759         if (err < 0)
9760                 goto unlock;
9761
9762         if (err == 0) {
9763                 err = -EINVAL;
9764                 goto unlock;
9765         }
9766
9767         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9768                 err = -EINVAL;
9769                 goto unlock;
9770         }
9771
9772         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9773                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9774                                                                 &chandef);
9775                 goto unlock;
9776         }
9777
9778         if (netif_carrier_ok(dev)) {
9779                 err = -EBUSY;
9780                 goto unlock;
9781         }
9782
9783         if (wdev->cac_started) {
9784                 err = -EBUSY;
9785                 goto unlock;
9786         }
9787
9788         /* CAC start is offloaded to HW and can't be started manually */
9789         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9790                 err = -EOPNOTSUPP;
9791                 goto unlock;
9792         }
9793
9794         if (!rdev->ops->start_radar_detection) {
9795                 err = -EOPNOTSUPP;
9796                 goto unlock;
9797         }
9798
9799         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9800         if (WARN_ON(!cac_time_ms))
9801                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9802
9803         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9804         if (!err) {
9805                 wdev->links[0].ap.chandef = chandef;
9806                 wdev->cac_started = true;
9807                 wdev->cac_start_time = jiffies;
9808                 wdev->cac_time_ms = cac_time_ms;
9809         }
9810 unlock:
9811         wiphy_unlock(wiphy);
9812
9813         return err;
9814 }
9815
9816 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9817                                           struct genl_info *info)
9818 {
9819         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9820         struct net_device *dev = info->user_ptr[1];
9821         struct wireless_dev *wdev = dev->ieee80211_ptr;
9822         struct wiphy *wiphy = wdev->wiphy;
9823         struct cfg80211_chan_def chandef;
9824         enum nl80211_dfs_regions dfs_region;
9825         int err;
9826
9827         dfs_region = reg_get_dfs_region(wiphy);
9828         if (dfs_region == NL80211_DFS_UNSET) {
9829                 GENL_SET_ERR_MSG(info,
9830                                  "DFS Region is not set. Unexpected Radar indication");
9831                 return -EINVAL;
9832         }
9833
9834         err = nl80211_parse_chandef(rdev, info, &chandef);
9835         if (err) {
9836                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9837                 return err;
9838         }
9839
9840         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9841         if (err < 0) {
9842                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9843                 return err;
9844         }
9845
9846         if (err == 0) {
9847                 GENL_SET_ERR_MSG(info,
9848                                  "Unexpected Radar indication for chandef/iftype");
9849                 return -EINVAL;
9850         }
9851
9852         /* Do not process this notification if radar is already detected
9853          * by kernel on this channel, and return success.
9854          */
9855         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9856                 return 0;
9857
9858         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9859
9860         cfg80211_sched_dfs_chan_update(rdev);
9861
9862         rdev->radar_chandef = chandef;
9863
9864         /* Propagate this notification to other radios as well */
9865         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9866
9867         return 0;
9868 }
9869
9870 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9871 {
9872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9873         unsigned int link_id = nl80211_link_id(info->attrs);
9874         struct net_device *dev = info->user_ptr[1];
9875         struct wireless_dev *wdev = dev->ieee80211_ptr;
9876         struct cfg80211_csa_settings params;
9877         struct nlattr **csa_attrs = NULL;
9878         int err;
9879         bool need_new_beacon = false;
9880         bool need_handle_dfs_flag = true;
9881         int len, i;
9882         u32 cs_count;
9883
9884         if (!rdev->ops->channel_switch ||
9885             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9886                 return -EOPNOTSUPP;
9887
9888         switch (dev->ieee80211_ptr->iftype) {
9889         case NL80211_IFTYPE_AP:
9890         case NL80211_IFTYPE_P2P_GO:
9891                 need_new_beacon = true;
9892                 /* For all modes except AP the handle_dfs flag needs to be
9893                  * supplied to tell the kernel that userspace will handle radar
9894                  * events when they happen. Otherwise a switch to a channel
9895                  * requiring DFS will be rejected.
9896                  */
9897                 need_handle_dfs_flag = false;
9898
9899                 /* useless if AP is not running */
9900                 if (!wdev->links[link_id].ap.beacon_interval)
9901                         return -ENOTCONN;
9902                 break;
9903         case NL80211_IFTYPE_ADHOC:
9904                 if (!wdev->u.ibss.ssid_len)
9905                         return -ENOTCONN;
9906                 break;
9907         case NL80211_IFTYPE_MESH_POINT:
9908                 if (!wdev->u.mesh.id_len)
9909                         return -ENOTCONN;
9910                 break;
9911         default:
9912                 return -EOPNOTSUPP;
9913         }
9914
9915         memset(&params, 0, sizeof(params));
9916         params.beacon_csa.ftm_responder = -1;
9917
9918         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9919             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9920                 return -EINVAL;
9921
9922         /* only important for AP, IBSS and mesh create IEs internally */
9923         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9924                 return -EINVAL;
9925
9926         /* Even though the attribute is u32, the specification says
9927          * u8, so let's make sure we don't overflow.
9928          */
9929         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9930         if (cs_count > 255)
9931                 return -EINVAL;
9932
9933         params.count = cs_count;
9934
9935         if (!need_new_beacon)
9936                 goto skip_beacons;
9937
9938         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9939         if (err)
9940                 goto free;
9941
9942         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9943                             GFP_KERNEL);
9944         if (!csa_attrs) {
9945                 err = -ENOMEM;
9946                 goto free;
9947         }
9948
9949         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9950                                           info->attrs[NL80211_ATTR_CSA_IES],
9951                                           nl80211_policy, info->extack);
9952         if (err)
9953                 goto free;
9954
9955         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9956         if (err)
9957                 goto free;
9958
9959         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9960                 err = -EINVAL;
9961                 goto free;
9962         }
9963
9964         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9965         if (!len || (len % sizeof(u16))) {
9966                 err = -EINVAL;
9967                 goto free;
9968         }
9969
9970         params.n_counter_offsets_beacon = len / sizeof(u16);
9971         if (rdev->wiphy.max_num_csa_counters &&
9972             (params.n_counter_offsets_beacon >
9973              rdev->wiphy.max_num_csa_counters)) {
9974                 err = -EINVAL;
9975                 goto free;
9976         }
9977
9978         params.counter_offsets_beacon =
9979                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9980
9981         /* sanity checks - counters should fit and be the same */
9982         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9983                 u16 offset = params.counter_offsets_beacon[i];
9984
9985                 if (offset >= params.beacon_csa.tail_len) {
9986                         err = -EINVAL;
9987                         goto free;
9988                 }
9989
9990                 if (params.beacon_csa.tail[offset] != params.count) {
9991                         err = -EINVAL;
9992                         goto free;
9993                 }
9994         }
9995
9996         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9997                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9998                 if (!len || (len % sizeof(u16))) {
9999                         err = -EINVAL;
10000                         goto free;
10001                 }
10002
10003                 params.n_counter_offsets_presp = len / sizeof(u16);
10004                 if (rdev->wiphy.max_num_csa_counters &&
10005                     (params.n_counter_offsets_presp >
10006                      rdev->wiphy.max_num_csa_counters)) {
10007                         err = -EINVAL;
10008                         goto free;
10009                 }
10010
10011                 params.counter_offsets_presp =
10012                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10013
10014                 /* sanity checks - counters should fit and be the same */
10015                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10016                         u16 offset = params.counter_offsets_presp[i];
10017
10018                         if (offset >= params.beacon_csa.probe_resp_len) {
10019                                 err = -EINVAL;
10020                                 goto free;
10021                         }
10022
10023                         if (params.beacon_csa.probe_resp[offset] !=
10024                             params.count) {
10025                                 err = -EINVAL;
10026                                 goto free;
10027                         }
10028                 }
10029         }
10030
10031 skip_beacons:
10032         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10033         if (err)
10034                 goto free;
10035
10036         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10037                                            wdev->iftype)) {
10038                 err = -EINVAL;
10039                 goto free;
10040         }
10041
10042         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10043                                             &params.chandef,
10044                                             wdev->iftype);
10045         if (err < 0)
10046                 goto free;
10047
10048         if (err > 0) {
10049                 params.radar_required = true;
10050                 if (need_handle_dfs_flag &&
10051                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10052                         err = -EINVAL;
10053                         goto free;
10054                 }
10055         }
10056
10057         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10058                 params.block_tx = true;
10059
10060         wdev_lock(wdev);
10061         err = rdev_channel_switch(rdev, dev, &params);
10062         wdev_unlock(wdev);
10063
10064 free:
10065         kfree(params.beacon_after.mbssid_ies);
10066         kfree(params.beacon_csa.mbssid_ies);
10067         kfree(csa_attrs);
10068         return err;
10069 }
10070
10071 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10072                             u32 seq, int flags,
10073                             struct cfg80211_registered_device *rdev,
10074                             struct wireless_dev *wdev,
10075                             struct cfg80211_internal_bss *intbss)
10076 {
10077         struct cfg80211_bss *res = &intbss->pub;
10078         const struct cfg80211_bss_ies *ies;
10079         unsigned int link_id;
10080         void *hdr;
10081         struct nlattr *bss;
10082
10083         ASSERT_WDEV_LOCK(wdev);
10084
10085         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10086                              NL80211_CMD_NEW_SCAN_RESULTS);
10087         if (!hdr)
10088                 return -1;
10089
10090         genl_dump_check_consistent(cb, hdr);
10091
10092         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10093                 goto nla_put_failure;
10094         if (wdev->netdev &&
10095             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10096                 goto nla_put_failure;
10097         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10098                               NL80211_ATTR_PAD))
10099                 goto nla_put_failure;
10100
10101         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10102         if (!bss)
10103                 goto nla_put_failure;
10104         if ((!is_zero_ether_addr(res->bssid) &&
10105              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10106                 goto nla_put_failure;
10107
10108         rcu_read_lock();
10109         /* indicate whether we have probe response data or not */
10110         if (rcu_access_pointer(res->proberesp_ies) &&
10111             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10112                 goto fail_unlock_rcu;
10113
10114         /* this pointer prefers to be pointed to probe response data
10115          * but is always valid
10116          */
10117         ies = rcu_dereference(res->ies);
10118         if (ies) {
10119                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10120                                       NL80211_BSS_PAD))
10121                         goto fail_unlock_rcu;
10122                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10123                                         ies->len, ies->data))
10124                         goto fail_unlock_rcu;
10125         }
10126
10127         /* and this pointer is always (unless driver didn't know) beacon data */
10128         ies = rcu_dereference(res->beacon_ies);
10129         if (ies && ies->from_beacon) {
10130                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10131                                       NL80211_BSS_PAD))
10132                         goto fail_unlock_rcu;
10133                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10134                                         ies->len, ies->data))
10135                         goto fail_unlock_rcu;
10136         }
10137         rcu_read_unlock();
10138
10139         if (res->beacon_interval &&
10140             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10141                 goto nla_put_failure;
10142         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10143             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10144             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10145                         res->channel->freq_offset) ||
10146             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10147             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10148                         jiffies_to_msecs(jiffies - intbss->ts)))
10149                 goto nla_put_failure;
10150
10151         if (intbss->parent_tsf &&
10152             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10153                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10154              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10155                      intbss->parent_bssid)))
10156                 goto nla_put_failure;
10157
10158         if (intbss->ts_boottime &&
10159             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10160                               intbss->ts_boottime, NL80211_BSS_PAD))
10161                 goto nla_put_failure;
10162
10163         if (!nl80211_put_signal(msg, intbss->pub.chains,
10164                                 intbss->pub.chain_signal,
10165                                 NL80211_BSS_CHAIN_SIGNAL))
10166                 goto nla_put_failure;
10167
10168         switch (rdev->wiphy.signal_type) {
10169         case CFG80211_SIGNAL_TYPE_MBM:
10170                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10171                         goto nla_put_failure;
10172                 break;
10173         case CFG80211_SIGNAL_TYPE_UNSPEC:
10174                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10175                         goto nla_put_failure;
10176                 break;
10177         default:
10178                 break;
10179         }
10180
10181         switch (wdev->iftype) {
10182         case NL80211_IFTYPE_P2P_CLIENT:
10183         case NL80211_IFTYPE_STATION:
10184                 for_each_valid_link(wdev, link_id) {
10185                         if (intbss == wdev->links[link_id].client.current_bss &&
10186                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10187                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10188                              (wdev->valid_links &&
10189                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10190                                           link_id) ||
10191                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10192                                        wdev->u.client.connected_addr)))))
10193                                 goto nla_put_failure;
10194                 }
10195                 break;
10196         case NL80211_IFTYPE_ADHOC:
10197                 if (intbss == wdev->u.ibss.current_bss &&
10198                     nla_put_u32(msg, NL80211_BSS_STATUS,
10199                                 NL80211_BSS_STATUS_IBSS_JOINED))
10200                         goto nla_put_failure;
10201                 break;
10202         default:
10203                 break;
10204         }
10205
10206         nla_nest_end(msg, bss);
10207
10208         genlmsg_end(msg, hdr);
10209         return 0;
10210
10211  fail_unlock_rcu:
10212         rcu_read_unlock();
10213  nla_put_failure:
10214         genlmsg_cancel(msg, hdr);
10215         return -EMSGSIZE;
10216 }
10217
10218 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10219 {
10220         struct cfg80211_registered_device *rdev;
10221         struct cfg80211_internal_bss *scan;
10222         struct wireless_dev *wdev;
10223         int start = cb->args[2], idx = 0;
10224         int err;
10225
10226         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10227         if (err)
10228                 return err;
10229         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10230         __acquire(&rdev->wiphy.mtx);
10231
10232         wdev_lock(wdev);
10233         spin_lock_bh(&rdev->bss_lock);
10234
10235         /*
10236          * dump_scan will be called multiple times to break up the scan results
10237          * into multiple messages.  It is unlikely that any more bss-es will be
10238          * expired after the first call, so only call only call this on the
10239          * first dump_scan invocation.
10240          */
10241         if (start == 0)
10242                 cfg80211_bss_expire(rdev);
10243
10244         cb->seq = rdev->bss_generation;
10245
10246         list_for_each_entry(scan, &rdev->bss_list, list) {
10247                 if (++idx <= start)
10248                         continue;
10249                 if (nl80211_send_bss(skb, cb,
10250                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10251                                 rdev, wdev, scan) < 0) {
10252                         idx--;
10253                         break;
10254                 }
10255         }
10256
10257         spin_unlock_bh(&rdev->bss_lock);
10258         wdev_unlock(wdev);
10259
10260         cb->args[2] = idx;
10261         wiphy_unlock(&rdev->wiphy);
10262
10263         return skb->len;
10264 }
10265
10266 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10267                                int flags, struct net_device *dev,
10268                                bool allow_radio_stats,
10269                                struct survey_info *survey)
10270 {
10271         void *hdr;
10272         struct nlattr *infoattr;
10273
10274         /* skip radio stats if userspace didn't request them */
10275         if (!survey->channel && !allow_radio_stats)
10276                 return 0;
10277
10278         hdr = nl80211hdr_put(msg, portid, seq, flags,
10279                              NL80211_CMD_NEW_SURVEY_RESULTS);
10280         if (!hdr)
10281                 return -ENOMEM;
10282
10283         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10284                 goto nla_put_failure;
10285
10286         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10287         if (!infoattr)
10288                 goto nla_put_failure;
10289
10290         if (survey->channel &&
10291             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10292                         survey->channel->center_freq))
10293                 goto nla_put_failure;
10294
10295         if (survey->channel && survey->channel->freq_offset &&
10296             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10297                         survey->channel->freq_offset))
10298                 goto nla_put_failure;
10299
10300         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10301             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10302                 goto nla_put_failure;
10303         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10304             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10305                 goto nla_put_failure;
10306         if ((survey->filled & SURVEY_INFO_TIME) &&
10307             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10308                         survey->time, NL80211_SURVEY_INFO_PAD))
10309                 goto nla_put_failure;
10310         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10311             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10312                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10313                 goto nla_put_failure;
10314         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10315             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10316                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10317                 goto nla_put_failure;
10318         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10319             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10320                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10321                 goto nla_put_failure;
10322         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10323             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10324                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10325                 goto nla_put_failure;
10326         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10327             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10328                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10329                 goto nla_put_failure;
10330         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10331             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10332                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10333                 goto nla_put_failure;
10334
10335         nla_nest_end(msg, infoattr);
10336
10337         genlmsg_end(msg, hdr);
10338         return 0;
10339
10340  nla_put_failure:
10341         genlmsg_cancel(msg, hdr);
10342         return -EMSGSIZE;
10343 }
10344
10345 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10346 {
10347         struct nlattr **attrbuf;
10348         struct survey_info survey;
10349         struct cfg80211_registered_device *rdev;
10350         struct wireless_dev *wdev;
10351         int survey_idx = cb->args[2];
10352         int res;
10353         bool radio_stats;
10354
10355         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10356         if (!attrbuf)
10357                 return -ENOMEM;
10358
10359         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10360         if (res) {
10361                 kfree(attrbuf);
10362                 return res;
10363         }
10364         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10365         __acquire(&rdev->wiphy.mtx);
10366
10367         /* prepare_wdev_dump parsed the attributes */
10368         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10369
10370         if (!wdev->netdev) {
10371                 res = -EINVAL;
10372                 goto out_err;
10373         }
10374
10375         if (!rdev->ops->dump_survey) {
10376                 res = -EOPNOTSUPP;
10377                 goto out_err;
10378         }
10379
10380         while (1) {
10381                 wdev_lock(wdev);
10382                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10383                 wdev_unlock(wdev);
10384                 if (res == -ENOENT)
10385                         break;
10386                 if (res)
10387                         goto out_err;
10388
10389                 /* don't send disabled channels, but do send non-channel data */
10390                 if (survey.channel &&
10391                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10392                         survey_idx++;
10393                         continue;
10394                 }
10395
10396                 if (nl80211_send_survey(skb,
10397                                 NETLINK_CB(cb->skb).portid,
10398                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10399                                 wdev->netdev, radio_stats, &survey) < 0)
10400                         goto out;
10401                 survey_idx++;
10402         }
10403
10404  out:
10405         cb->args[2] = survey_idx;
10406         res = skb->len;
10407  out_err:
10408         kfree(attrbuf);
10409         wiphy_unlock(&rdev->wiphy);
10410         return res;
10411 }
10412
10413 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10414 {
10415         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10416                                   NL80211_WPA_VERSION_2 |
10417                                   NL80211_WPA_VERSION_3));
10418 }
10419
10420 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10421 {
10422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10423         struct net_device *dev = info->user_ptr[1];
10424         struct ieee80211_channel *chan;
10425         const u8 *bssid, *ssid;
10426         int err, ssid_len;
10427         enum nl80211_auth_type auth_type;
10428         struct key_parse key;
10429         bool local_state_change;
10430         struct cfg80211_auth_request req = {};
10431         u32 freq;
10432
10433         if (!info->attrs[NL80211_ATTR_MAC])
10434                 return -EINVAL;
10435
10436         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10437                 return -EINVAL;
10438
10439         if (!info->attrs[NL80211_ATTR_SSID])
10440                 return -EINVAL;
10441
10442         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10443                 return -EINVAL;
10444
10445         err = nl80211_parse_key(info, &key);
10446         if (err)
10447                 return err;
10448
10449         if (key.idx >= 0) {
10450                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10451                         return -EINVAL;
10452                 if (!key.p.key || !key.p.key_len)
10453                         return -EINVAL;
10454                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10455                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10456                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10457                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10458                         return -EINVAL;
10459                 if (key.idx > 3)
10460                         return -EINVAL;
10461         } else {
10462                 key.p.key_len = 0;
10463                 key.p.key = NULL;
10464         }
10465
10466         if (key.idx >= 0) {
10467                 int i;
10468                 bool ok = false;
10469
10470                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10471                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10472                                 ok = true;
10473                                 break;
10474                         }
10475                 }
10476                 if (!ok)
10477                         return -EINVAL;
10478         }
10479
10480         if (!rdev->ops->auth)
10481                 return -EOPNOTSUPP;
10482
10483         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10484             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10485                 return -EOPNOTSUPP;
10486
10487         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10488         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10489         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10490                 freq +=
10491                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10492
10493         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10494         if (!chan)
10495                 return -EINVAL;
10496
10497         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10498         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10499
10500         if (info->attrs[NL80211_ATTR_IE]) {
10501                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10502                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10503         }
10504
10505         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10506         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10507                 return -EINVAL;
10508
10509         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10510              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10511              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10512              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10513             !info->attrs[NL80211_ATTR_AUTH_DATA])
10514                 return -EINVAL;
10515
10516         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10517                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10518                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10519                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10520                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10521                         return -EINVAL;
10522                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10523                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10524         }
10525
10526         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10527
10528         /*
10529          * Since we no longer track auth state, ignore
10530          * requests to only change local state.
10531          */
10532         if (local_state_change)
10533                 return 0;
10534
10535         req.auth_type = auth_type;
10536         req.key = key.p.key;
10537         req.key_len = key.p.key_len;
10538         req.key_idx = key.idx;
10539         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10540         if (req.link_id >= 0) {
10541                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10542                         return -EINVAL;
10543                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10544                         return -EINVAL;
10545                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10546         }
10547
10548         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10549                                    IEEE80211_BSS_TYPE_ESS,
10550                                    IEEE80211_PRIVACY_ANY);
10551         if (!req.bss)
10552                 return -ENOENT;
10553
10554         wdev_lock(dev->ieee80211_ptr);
10555         err = cfg80211_mlme_auth(rdev, dev, &req);
10556         wdev_unlock(dev->ieee80211_ptr);
10557
10558         cfg80211_put_bss(&rdev->wiphy, req.bss);
10559
10560         return err;
10561 }
10562
10563 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10564                                      struct genl_info *info)
10565 {
10566         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10567                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10568                 return -EINVAL;
10569         }
10570
10571         if (!rdev->ops->tx_control_port ||
10572             !wiphy_ext_feature_isset(&rdev->wiphy,
10573                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10574                 return -EOPNOTSUPP;
10575
10576         return 0;
10577 }
10578
10579 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10580                                    struct genl_info *info,
10581                                    struct cfg80211_crypto_settings *settings,
10582                                    int cipher_limit)
10583 {
10584         memset(settings, 0, sizeof(*settings));
10585
10586         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10587
10588         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10589                 u16 proto;
10590
10591                 proto = nla_get_u16(
10592                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10593                 settings->control_port_ethertype = cpu_to_be16(proto);
10594                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10595                     proto != ETH_P_PAE)
10596                         return -EINVAL;
10597                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10598                         settings->control_port_no_encrypt = true;
10599         } else
10600                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10601
10602         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10603                 int r = validate_pae_over_nl80211(rdev, info);
10604
10605                 if (r < 0)
10606                         return r;
10607
10608                 settings->control_port_over_nl80211 = true;
10609
10610                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10611                         settings->control_port_no_preauth = true;
10612         }
10613
10614         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10615                 void *data;
10616                 int len, i;
10617
10618                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10619                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10620                 settings->n_ciphers_pairwise = len / sizeof(u32);
10621
10622                 if (len % sizeof(u32))
10623                         return -EINVAL;
10624
10625                 if (settings->n_ciphers_pairwise > cipher_limit)
10626                         return -EINVAL;
10627
10628                 memcpy(settings->ciphers_pairwise, data, len);
10629
10630                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10631                         if (!cfg80211_supported_cipher_suite(
10632                                         &rdev->wiphy,
10633                                         settings->ciphers_pairwise[i]))
10634                                 return -EINVAL;
10635         }
10636
10637         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10638                 settings->cipher_group =
10639                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10640                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10641                                                      settings->cipher_group))
10642                         return -EINVAL;
10643         }
10644
10645         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10646                 settings->wpa_versions =
10647                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10648                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10649                         return -EINVAL;
10650         }
10651
10652         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10653                 void *data;
10654                 int len;
10655
10656                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10657                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10658                 settings->n_akm_suites = len / sizeof(u32);
10659
10660                 if (len % sizeof(u32))
10661                         return -EINVAL;
10662
10663                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10664                         return -EINVAL;
10665
10666                 memcpy(settings->akm_suites, data, len);
10667         }
10668
10669         if (info->attrs[NL80211_ATTR_PMK]) {
10670                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10671                         return -EINVAL;
10672                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10673                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10674                     !wiphy_ext_feature_isset(&rdev->wiphy,
10675                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10676                         return -EINVAL;
10677                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10678         }
10679
10680         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10681                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10682                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10683                     !wiphy_ext_feature_isset(&rdev->wiphy,
10684                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10685                         return -EINVAL;
10686                 settings->sae_pwd =
10687                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10688                 settings->sae_pwd_len =
10689                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10690         }
10691
10692         if (info->attrs[NL80211_ATTR_SAE_PWE])
10693                 settings->sae_pwe =
10694                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10695         else
10696                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10697
10698         return 0;
10699 }
10700
10701 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10702                                               const u8 *ssid, int ssid_len,
10703                                               struct nlattr **attrs,
10704                                               const u8 **bssid_out)
10705 {
10706         struct ieee80211_channel *chan;
10707         struct cfg80211_bss *bss;
10708         const u8 *bssid;
10709         u32 freq;
10710
10711         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10712                 return ERR_PTR(-EINVAL);
10713
10714         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10715
10716         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10717         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10718                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10719
10720         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10721         if (!chan)
10722                 return ERR_PTR(-EINVAL);
10723
10724         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10725                                ssid, ssid_len,
10726                                IEEE80211_BSS_TYPE_ESS,
10727                                IEEE80211_PRIVACY_ANY);
10728         if (!bss)
10729                 return ERR_PTR(-ENOENT);
10730
10731         *bssid_out = bssid;
10732         return bss;
10733 }
10734
10735 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10736 {
10737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10738         struct net_device *dev = info->user_ptr[1];
10739         struct cfg80211_assoc_request req = {};
10740         struct nlattr **attrs = NULL;
10741         const u8 *bssid, *ssid;
10742         unsigned int link_id;
10743         int err, ssid_len;
10744
10745         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10746             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10747                 return -EPERM;
10748
10749         if (!info->attrs[NL80211_ATTR_SSID])
10750                 return -EINVAL;
10751
10752         if (!rdev->ops->assoc)
10753                 return -EOPNOTSUPP;
10754
10755         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10756             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10757                 return -EOPNOTSUPP;
10758
10759         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10760         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10761
10762         if (info->attrs[NL80211_ATTR_IE]) {
10763                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10764                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10765
10766                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10767                                            req.ie, req.ie_len)) {
10768                         GENL_SET_ERR_MSG(info,
10769                                          "non-inheritance makes no sense");
10770                         return -EINVAL;
10771                 }
10772         }
10773
10774         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10775                 enum nl80211_mfp mfp =
10776                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10777                 if (mfp == NL80211_MFP_REQUIRED)
10778                         req.use_mfp = true;
10779                 else if (mfp != NL80211_MFP_NO)
10780                         return -EINVAL;
10781         }
10782
10783         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10784                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10785
10786         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10787                 req.flags |= ASSOC_REQ_DISABLE_HT;
10788
10789         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10790                 memcpy(&req.ht_capa_mask,
10791                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10792                        sizeof(req.ht_capa_mask));
10793
10794         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10795                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10796                         return -EINVAL;
10797                 memcpy(&req.ht_capa,
10798                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10799                        sizeof(req.ht_capa));
10800         }
10801
10802         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10803                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10804
10805         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10806                 req.flags |= ASSOC_REQ_DISABLE_HE;
10807
10808         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10809                 req.flags |= ASSOC_REQ_DISABLE_EHT;
10810
10811         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10812                 memcpy(&req.vht_capa_mask,
10813                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10814                        sizeof(req.vht_capa_mask));
10815
10816         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10817                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10818                         return -EINVAL;
10819                 memcpy(&req.vht_capa,
10820                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10821                        sizeof(req.vht_capa));
10822         }
10823
10824         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10825                 if (!((rdev->wiphy.features &
10826                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10827                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10828                     !wiphy_ext_feature_isset(&rdev->wiphy,
10829                                              NL80211_EXT_FEATURE_RRM))
10830                         return -EINVAL;
10831                 req.flags |= ASSOC_REQ_USE_RRM;
10832         }
10833
10834         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10835                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10836                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10837                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10838                         return -EINVAL;
10839                 req.fils_nonces =
10840                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10841         }
10842
10843         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10844                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10845                         return -EINVAL;
10846                 memcpy(&req.s1g_capa_mask,
10847                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10848                        sizeof(req.s1g_capa_mask));
10849         }
10850
10851         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10852                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10853                         return -EINVAL;
10854                 memcpy(&req.s1g_capa,
10855                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10856                        sizeof(req.s1g_capa));
10857         }
10858
10859         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10860
10861         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
10862                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
10863                 struct nlattr *link;
10864                 int rem = 0;
10865
10866                 if (req.link_id < 0)
10867                         return -EINVAL;
10868
10869                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10870                         return -EINVAL;
10871
10872                 if (info->attrs[NL80211_ATTR_MAC] ||
10873                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10874                     !info->attrs[NL80211_ATTR_MLD_ADDR])
10875                         return -EINVAL;
10876
10877                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10878
10879                 attrs = kzalloc(attrsize, GFP_KERNEL);
10880                 if (!attrs)
10881                         return -ENOMEM;
10882
10883                 nla_for_each_nested(link,
10884                                     info->attrs[NL80211_ATTR_MLO_LINKS],
10885                                     rem) {
10886                         memset(attrs, 0, attrsize);
10887
10888                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
10889                                          link, NULL, NULL);
10890
10891                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
10892                                 err = -EINVAL;
10893                                 goto free;
10894                         }
10895
10896                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
10897                         /* cannot use the same link ID again */
10898                         if (req.links[link_id].bss) {
10899                                 err = -EINVAL;
10900                                 goto free;
10901                         }
10902                         req.links[link_id].bss =
10903                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
10904                                                   &bssid);
10905                         if (IS_ERR(req.links[link_id].bss)) {
10906                                 err = PTR_ERR(req.links[link_id].bss);
10907                                 req.links[link_id].bss = NULL;
10908                                 goto free;
10909                         }
10910
10911                         if (attrs[NL80211_ATTR_IE]) {
10912                                 req.links[link_id].elems =
10913                                         nla_data(attrs[NL80211_ATTR_IE]);
10914                                 req.links[link_id].elems_len =
10915                                         nla_len(attrs[NL80211_ATTR_IE]);
10916
10917                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
10918                                                        req.links[link_id].elems,
10919                                                        req.links[link_id].elems_len)) {
10920                                         GENL_SET_ERR_MSG(info,
10921                                                          "cannot deal with fragmentation");
10922                                         err = -EINVAL;
10923                                         goto free;
10924                                 }
10925
10926                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10927                                                            req.links[link_id].elems,
10928                                                            req.links[link_id].elems_len)) {
10929                                         GENL_SET_ERR_MSG(info,
10930                                                          "cannot deal with non-inheritance");
10931                                         err = -EINVAL;
10932                                         goto free;
10933                                 }
10934                         }
10935                 }
10936
10937                 if (!req.links[req.link_id].bss) {
10938                         err = -EINVAL;
10939                         goto free;
10940                 }
10941
10942                 if (req.links[req.link_id].elems_len) {
10943                         GENL_SET_ERR_MSG(info,
10944                                          "cannot have per-link elems on assoc link");
10945                         err = -EINVAL;
10946                         goto free;
10947                 }
10948
10949                 kfree(attrs);
10950                 attrs = NULL;
10951         } else {
10952                 if (req.link_id >= 0)
10953                         return -EINVAL;
10954
10955                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
10956                                             &bssid);
10957                 if (IS_ERR(req.bss))
10958                         return PTR_ERR(req.bss);
10959         }
10960
10961         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10962         if (!err) {
10963                 wdev_lock(dev->ieee80211_ptr);
10964
10965                 err = cfg80211_mlme_assoc(rdev, dev, &req);
10966
10967                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10968                         dev->ieee80211_ptr->conn_owner_nlportid =
10969                                 info->snd_portid;
10970                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10971                                bssid, ETH_ALEN);
10972                 }
10973
10974                 wdev_unlock(dev->ieee80211_ptr);
10975         }
10976
10977 free:
10978         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
10979                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
10980         cfg80211_put_bss(&rdev->wiphy, req.bss);
10981         kfree(attrs);
10982
10983         return err;
10984 }
10985
10986 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10987 {
10988         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10989         struct net_device *dev = info->user_ptr[1];
10990         const u8 *ie = NULL, *bssid;
10991         int ie_len = 0, err;
10992         u16 reason_code;
10993         bool local_state_change;
10994
10995         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10996             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10997                 return -EPERM;
10998
10999         if (!info->attrs[NL80211_ATTR_MAC])
11000                 return -EINVAL;
11001
11002         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11003                 return -EINVAL;
11004
11005         if (!rdev->ops->deauth)
11006                 return -EOPNOTSUPP;
11007
11008         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11009             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11010                 return -EOPNOTSUPP;
11011
11012         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11013
11014         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11015         if (reason_code == 0) {
11016                 /* Reason Code 0 is reserved */
11017                 return -EINVAL;
11018         }
11019
11020         if (info->attrs[NL80211_ATTR_IE]) {
11021                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11022                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11023         }
11024
11025         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11026
11027         wdev_lock(dev->ieee80211_ptr);
11028         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11029                                    local_state_change);
11030         wdev_unlock(dev->ieee80211_ptr);
11031         return err;
11032 }
11033
11034 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11035 {
11036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11037         struct net_device *dev = info->user_ptr[1];
11038         const u8 *ie = NULL, *bssid;
11039         int ie_len = 0, err;
11040         u16 reason_code;
11041         bool local_state_change;
11042
11043         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11044             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11045                 return -EPERM;
11046
11047         if (!info->attrs[NL80211_ATTR_MAC])
11048                 return -EINVAL;
11049
11050         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11051                 return -EINVAL;
11052
11053         if (!rdev->ops->disassoc)
11054                 return -EOPNOTSUPP;
11055
11056         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11057             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11058                 return -EOPNOTSUPP;
11059
11060         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11061
11062         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11063         if (reason_code == 0) {
11064                 /* Reason Code 0 is reserved */
11065                 return -EINVAL;
11066         }
11067
11068         if (info->attrs[NL80211_ATTR_IE]) {
11069                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11070                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11071         }
11072
11073         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11074
11075         wdev_lock(dev->ieee80211_ptr);
11076         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11077                                      local_state_change);
11078         wdev_unlock(dev->ieee80211_ptr);
11079         return err;
11080 }
11081
11082 static bool
11083 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11084                          int mcast_rate[NUM_NL80211_BANDS],
11085                          int rateval)
11086 {
11087         struct wiphy *wiphy = &rdev->wiphy;
11088         bool found = false;
11089         int band, i;
11090
11091         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11092                 struct ieee80211_supported_band *sband;
11093
11094                 sband = wiphy->bands[band];
11095                 if (!sband)
11096                         continue;
11097
11098                 for (i = 0; i < sband->n_bitrates; i++) {
11099                         if (sband->bitrates[i].bitrate == rateval) {
11100                                 mcast_rate[band] = i + 1;
11101                                 found = true;
11102                                 break;
11103                         }
11104                 }
11105         }
11106
11107         return found;
11108 }
11109
11110 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11111 {
11112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11113         struct net_device *dev = info->user_ptr[1];
11114         struct cfg80211_ibss_params ibss;
11115         struct wiphy *wiphy;
11116         struct cfg80211_cached_keys *connkeys = NULL;
11117         int err;
11118
11119         memset(&ibss, 0, sizeof(ibss));
11120
11121         if (!info->attrs[NL80211_ATTR_SSID] ||
11122             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11123                 return -EINVAL;
11124
11125         ibss.beacon_interval = 100;
11126
11127         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11128                 ibss.beacon_interval =
11129                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11130
11131         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11132                                            ibss.beacon_interval);
11133         if (err)
11134                 return err;
11135
11136         if (!rdev->ops->join_ibss)
11137                 return -EOPNOTSUPP;
11138
11139         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11140                 return -EOPNOTSUPP;
11141
11142         wiphy = &rdev->wiphy;
11143
11144         if (info->attrs[NL80211_ATTR_MAC]) {
11145                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11146
11147                 if (!is_valid_ether_addr(ibss.bssid))
11148                         return -EINVAL;
11149         }
11150         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11151         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11152
11153         if (info->attrs[NL80211_ATTR_IE]) {
11154                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11155                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11156         }
11157
11158         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11159         if (err)
11160                 return err;
11161
11162         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11163                                      NL80211_IFTYPE_ADHOC))
11164                 return -EINVAL;
11165
11166         switch (ibss.chandef.width) {
11167         case NL80211_CHAN_WIDTH_5:
11168         case NL80211_CHAN_WIDTH_10:
11169         case NL80211_CHAN_WIDTH_20_NOHT:
11170                 break;
11171         case NL80211_CHAN_WIDTH_20:
11172         case NL80211_CHAN_WIDTH_40:
11173                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11174                         return -EINVAL;
11175                 break;
11176         case NL80211_CHAN_WIDTH_80:
11177         case NL80211_CHAN_WIDTH_80P80:
11178         case NL80211_CHAN_WIDTH_160:
11179                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11180                         return -EINVAL;
11181                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11182                                              NL80211_EXT_FEATURE_VHT_IBSS))
11183                         return -EINVAL;
11184                 break;
11185         case NL80211_CHAN_WIDTH_320:
11186                 return -EINVAL;
11187         default:
11188                 return -EINVAL;
11189         }
11190
11191         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11192         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11193
11194         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11195                 u8 *rates =
11196                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11197                 int n_rates =
11198                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11199                 struct ieee80211_supported_band *sband =
11200                         wiphy->bands[ibss.chandef.chan->band];
11201
11202                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11203                                              &ibss.basic_rates);
11204                 if (err)
11205                         return err;
11206         }
11207
11208         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11209                 memcpy(&ibss.ht_capa_mask,
11210                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11211                        sizeof(ibss.ht_capa_mask));
11212
11213         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11214                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11215                         return -EINVAL;
11216                 memcpy(&ibss.ht_capa,
11217                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11218                        sizeof(ibss.ht_capa));
11219         }
11220
11221         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11222             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11223                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11224                 return -EINVAL;
11225
11226         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11227                 bool no_ht = false;
11228
11229                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11230                 if (IS_ERR(connkeys))
11231                         return PTR_ERR(connkeys);
11232
11233                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11234                     no_ht) {
11235                         kfree_sensitive(connkeys);
11236                         return -EINVAL;
11237                 }
11238         }
11239
11240         ibss.control_port =
11241                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11242
11243         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11244                 int r = validate_pae_over_nl80211(rdev, info);
11245
11246                 if (r < 0) {
11247                         kfree_sensitive(connkeys);
11248                         return r;
11249                 }
11250
11251                 ibss.control_port_over_nl80211 = true;
11252         }
11253
11254         ibss.userspace_handles_dfs =
11255                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11256
11257         wdev_lock(dev->ieee80211_ptr);
11258         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11259         if (err)
11260                 kfree_sensitive(connkeys);
11261         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11262                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11263         wdev_unlock(dev->ieee80211_ptr);
11264
11265         return err;
11266 }
11267
11268 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11269 {
11270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11271         struct net_device *dev = info->user_ptr[1];
11272
11273         if (!rdev->ops->leave_ibss)
11274                 return -EOPNOTSUPP;
11275
11276         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11277                 return -EOPNOTSUPP;
11278
11279         return cfg80211_leave_ibss(rdev, dev, false);
11280 }
11281
11282 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11283 {
11284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11285         struct net_device *dev = info->user_ptr[1];
11286         int mcast_rate[NUM_NL80211_BANDS];
11287         u32 nla_rate;
11288
11289         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11290             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11291             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11292                 return -EOPNOTSUPP;
11293
11294         if (!rdev->ops->set_mcast_rate)
11295                 return -EOPNOTSUPP;
11296
11297         memset(mcast_rate, 0, sizeof(mcast_rate));
11298
11299         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11300                 return -EINVAL;
11301
11302         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11303         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11304                 return -EINVAL;
11305
11306         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11307 }
11308
11309 static struct sk_buff *
11310 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11311                             struct wireless_dev *wdev, int approxlen,
11312                             u32 portid, u32 seq, enum nl80211_commands cmd,
11313                             enum nl80211_attrs attr,
11314                             const struct nl80211_vendor_cmd_info *info,
11315                             gfp_t gfp)
11316 {
11317         struct sk_buff *skb;
11318         void *hdr;
11319         struct nlattr *data;
11320
11321         skb = nlmsg_new(approxlen + 100, gfp);
11322         if (!skb)
11323                 return NULL;
11324
11325         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11326         if (!hdr) {
11327                 kfree_skb(skb);
11328                 return NULL;
11329         }
11330
11331         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11332                 goto nla_put_failure;
11333
11334         if (info) {
11335                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11336                                 info->vendor_id))
11337                         goto nla_put_failure;
11338                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11339                                 info->subcmd))
11340                         goto nla_put_failure;
11341         }
11342
11343         if (wdev) {
11344                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11345                                       wdev_id(wdev), NL80211_ATTR_PAD))
11346                         goto nla_put_failure;
11347                 if (wdev->netdev &&
11348                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11349                                 wdev->netdev->ifindex))
11350                         goto nla_put_failure;
11351         }
11352
11353         data = nla_nest_start_noflag(skb, attr);
11354         if (!data)
11355                 goto nla_put_failure;
11356
11357         ((void **)skb->cb)[0] = rdev;
11358         ((void **)skb->cb)[1] = hdr;
11359         ((void **)skb->cb)[2] = data;
11360
11361         return skb;
11362
11363  nla_put_failure:
11364         kfree_skb(skb);
11365         return NULL;
11366 }
11367
11368 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11369                                            struct wireless_dev *wdev,
11370                                            enum nl80211_commands cmd,
11371                                            enum nl80211_attrs attr,
11372                                            unsigned int portid,
11373                                            int vendor_event_idx,
11374                                            int approxlen, gfp_t gfp)
11375 {
11376         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11377         const struct nl80211_vendor_cmd_info *info;
11378
11379         switch (cmd) {
11380         case NL80211_CMD_TESTMODE:
11381                 if (WARN_ON(vendor_event_idx != -1))
11382                         return NULL;
11383                 info = NULL;
11384                 break;
11385         case NL80211_CMD_VENDOR:
11386                 if (WARN_ON(vendor_event_idx < 0 ||
11387                             vendor_event_idx >= wiphy->n_vendor_events))
11388                         return NULL;
11389                 info = &wiphy->vendor_events[vendor_event_idx];
11390                 break;
11391         default:
11392                 WARN_ON(1);
11393                 return NULL;
11394         }
11395
11396         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11397                                            cmd, attr, info, gfp);
11398 }
11399 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11400
11401 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11402 {
11403         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11404         void *hdr = ((void **)skb->cb)[1];
11405         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11406         struct nlattr *data = ((void **)skb->cb)[2];
11407         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11408
11409         /* clear CB data for netlink core to own from now on */
11410         memset(skb->cb, 0, sizeof(skb->cb));
11411
11412         nla_nest_end(skb, data);
11413         genlmsg_end(skb, hdr);
11414
11415         if (nlhdr->nlmsg_pid) {
11416                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11417                                 nlhdr->nlmsg_pid);
11418         } else {
11419                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11420                         mcgrp = NL80211_MCGRP_VENDOR;
11421
11422                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11423                                         skb, 0, mcgrp, gfp);
11424         }
11425 }
11426 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11427
11428 #ifdef CONFIG_NL80211_TESTMODE
11429 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11430 {
11431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11432         struct wireless_dev *wdev;
11433         int err;
11434
11435         lockdep_assert_held(&rdev->wiphy.mtx);
11436
11437         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11438                                           info->attrs);
11439
11440         if (!rdev->ops->testmode_cmd)
11441                 return -EOPNOTSUPP;
11442
11443         if (IS_ERR(wdev)) {
11444                 err = PTR_ERR(wdev);
11445                 if (err != -EINVAL)
11446                         return err;
11447                 wdev = NULL;
11448         } else if (wdev->wiphy != &rdev->wiphy) {
11449                 return -EINVAL;
11450         }
11451
11452         if (!info->attrs[NL80211_ATTR_TESTDATA])
11453                 return -EINVAL;
11454
11455         rdev->cur_cmd_info = info;
11456         err = rdev_testmode_cmd(rdev, wdev,
11457                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11458                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11459         rdev->cur_cmd_info = NULL;
11460
11461         return err;
11462 }
11463
11464 static int nl80211_testmode_dump(struct sk_buff *skb,
11465                                  struct netlink_callback *cb)
11466 {
11467         struct cfg80211_registered_device *rdev;
11468         struct nlattr **attrbuf = NULL;
11469         int err;
11470         long phy_idx;
11471         void *data = NULL;
11472         int data_len = 0;
11473
11474         rtnl_lock();
11475
11476         if (cb->args[0]) {
11477                 /*
11478                  * 0 is a valid index, but not valid for args[0],
11479                  * so we need to offset by 1.
11480                  */
11481                 phy_idx = cb->args[0] - 1;
11482
11483                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11484                 if (!rdev) {
11485                         err = -ENOENT;
11486                         goto out_err;
11487                 }
11488         } else {
11489                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11490                                   GFP_KERNEL);
11491                 if (!attrbuf) {
11492                         err = -ENOMEM;
11493                         goto out_err;
11494                 }
11495
11496                 err = nlmsg_parse_deprecated(cb->nlh,
11497                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11498                                              attrbuf, nl80211_fam.maxattr,
11499                                              nl80211_policy, NULL);
11500                 if (err)
11501                         goto out_err;
11502
11503                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11504                 if (IS_ERR(rdev)) {
11505                         err = PTR_ERR(rdev);
11506                         goto out_err;
11507                 }
11508                 phy_idx = rdev->wiphy_idx;
11509
11510                 if (attrbuf[NL80211_ATTR_TESTDATA])
11511                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11512         }
11513
11514         if (cb->args[1]) {
11515                 data = nla_data((void *)cb->args[1]);
11516                 data_len = nla_len((void *)cb->args[1]);
11517         }
11518
11519         if (!rdev->ops->testmode_dump) {
11520                 err = -EOPNOTSUPP;
11521                 goto out_err;
11522         }
11523
11524         while (1) {
11525                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11526                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11527                                            NL80211_CMD_TESTMODE);
11528                 struct nlattr *tmdata;
11529
11530                 if (!hdr)
11531                         break;
11532
11533                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11534                         genlmsg_cancel(skb, hdr);
11535                         break;
11536                 }
11537
11538                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11539                 if (!tmdata) {
11540                         genlmsg_cancel(skb, hdr);
11541                         break;
11542                 }
11543                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11544                 nla_nest_end(skb, tmdata);
11545
11546                 if (err == -ENOBUFS || err == -ENOENT) {
11547                         genlmsg_cancel(skb, hdr);
11548                         break;
11549                 } else if (err) {
11550                         genlmsg_cancel(skb, hdr);
11551                         goto out_err;
11552                 }
11553
11554                 genlmsg_end(skb, hdr);
11555         }
11556
11557         err = skb->len;
11558         /* see above */
11559         cb->args[0] = phy_idx + 1;
11560  out_err:
11561         kfree(attrbuf);
11562         rtnl_unlock();
11563         return err;
11564 }
11565 #endif
11566
11567 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11568 {
11569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11570         struct net_device *dev = info->user_ptr[1];
11571         struct cfg80211_connect_params connect;
11572         struct wiphy *wiphy;
11573         struct cfg80211_cached_keys *connkeys = NULL;
11574         u32 freq = 0;
11575         int err;
11576
11577         memset(&connect, 0, sizeof(connect));
11578
11579         if (!info->attrs[NL80211_ATTR_SSID] ||
11580             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11581                 return -EINVAL;
11582
11583         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11584                 connect.auth_type =
11585                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11586                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11587                                              NL80211_CMD_CONNECT))
11588                         return -EINVAL;
11589         } else
11590                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11591
11592         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11593
11594         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11595             !wiphy_ext_feature_isset(&rdev->wiphy,
11596                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11597                 return -EINVAL;
11598         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11599
11600         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11601                                       NL80211_MAX_NR_CIPHER_SUITES);
11602         if (err)
11603                 return err;
11604
11605         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11606             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11607                 return -EOPNOTSUPP;
11608
11609         wiphy = &rdev->wiphy;
11610
11611         connect.bg_scan_period = -1;
11612         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11613                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11614                 connect.bg_scan_period =
11615                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11616         }
11617
11618         if (info->attrs[NL80211_ATTR_MAC])
11619                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11620         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11621                 connect.bssid_hint =
11622                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11623         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11624         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11625
11626         if (info->attrs[NL80211_ATTR_IE]) {
11627                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11628                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11629         }
11630
11631         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11632                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11633                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11634                     !wiphy_ext_feature_isset(&rdev->wiphy,
11635                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11636                         return -EOPNOTSUPP;
11637         } else {
11638                 connect.mfp = NL80211_MFP_NO;
11639         }
11640
11641         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11642                 connect.prev_bssid =
11643                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11644
11645         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11646                 freq = MHZ_TO_KHZ(nla_get_u32(
11647                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11648         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11649                 freq +=
11650                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11651
11652         if (freq) {
11653                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11654                 if (!connect.channel)
11655                         return -EINVAL;
11656         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11657                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11658                 freq = MHZ_TO_KHZ(freq);
11659                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11660                 if (!connect.channel_hint)
11661                         return -EINVAL;
11662         }
11663
11664         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11665                 connect.edmg.channels =
11666                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11667
11668                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11669                         connect.edmg.bw_config =
11670                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11671         }
11672
11673         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11674                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11675                 if (IS_ERR(connkeys))
11676                         return PTR_ERR(connkeys);
11677         }
11678
11679         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11680                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11681
11682         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11683                 memcpy(&connect.ht_capa_mask,
11684                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11685                        sizeof(connect.ht_capa_mask));
11686
11687         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11688                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11689                         kfree_sensitive(connkeys);
11690                         return -EINVAL;
11691                 }
11692                 memcpy(&connect.ht_capa,
11693                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11694                        sizeof(connect.ht_capa));
11695         }
11696
11697         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11698                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11699
11700         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11701                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11702
11703         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11704                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11705
11706         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11707                 memcpy(&connect.vht_capa_mask,
11708                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11709                        sizeof(connect.vht_capa_mask));
11710
11711         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11712                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11713                         kfree_sensitive(connkeys);
11714                         return -EINVAL;
11715                 }
11716                 memcpy(&connect.vht_capa,
11717                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11718                        sizeof(connect.vht_capa));
11719         }
11720
11721         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11722                 if (!((rdev->wiphy.features &
11723                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11724                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11725                     !wiphy_ext_feature_isset(&rdev->wiphy,
11726                                              NL80211_EXT_FEATURE_RRM)) {
11727                         kfree_sensitive(connkeys);
11728                         return -EINVAL;
11729                 }
11730                 connect.flags |= ASSOC_REQ_USE_RRM;
11731         }
11732
11733         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11734         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11735                 kfree_sensitive(connkeys);
11736                 return -EOPNOTSUPP;
11737         }
11738
11739         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11740                 /* bss selection makes no sense if bssid is set */
11741                 if (connect.bssid) {
11742                         kfree_sensitive(connkeys);
11743                         return -EINVAL;
11744                 }
11745
11746                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11747                                        wiphy, &connect.bss_select);
11748                 if (err) {
11749                         kfree_sensitive(connkeys);
11750                         return err;
11751                 }
11752         }
11753
11754         if (wiphy_ext_feature_isset(&rdev->wiphy,
11755                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11756             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11757             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11758             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11759             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11760                 connect.fils_erp_username =
11761                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11762                 connect.fils_erp_username_len =
11763                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11764                 connect.fils_erp_realm =
11765                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11766                 connect.fils_erp_realm_len =
11767                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11768                 connect.fils_erp_next_seq_num =
11769                         nla_get_u16(
11770                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11771                 connect.fils_erp_rrk =
11772                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11773                 connect.fils_erp_rrk_len =
11774                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11775         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11776                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11777                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11778                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11779                 kfree_sensitive(connkeys);
11780                 return -EINVAL;
11781         }
11782
11783         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
11784                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11785                         kfree_sensitive(connkeys);
11786                         GENL_SET_ERR_MSG(info,
11787                                          "external auth requires connection ownership");
11788                         return -EINVAL;
11789                 }
11790                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
11791         }
11792
11793         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
11794                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
11795
11796         wdev_lock(dev->ieee80211_ptr);
11797
11798         err = cfg80211_connect(rdev, dev, &connect, connkeys,
11799                                connect.prev_bssid);
11800         if (err)
11801                 kfree_sensitive(connkeys);
11802
11803         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11804                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11805                 if (connect.bssid)
11806                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11807                                connect.bssid, ETH_ALEN);
11808                 else
11809                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
11810         }
11811
11812         wdev_unlock(dev->ieee80211_ptr);
11813
11814         return err;
11815 }
11816
11817 static int nl80211_update_connect_params(struct sk_buff *skb,
11818                                          struct genl_info *info)
11819 {
11820         struct cfg80211_connect_params connect = {};
11821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11822         struct net_device *dev = info->user_ptr[1];
11823         struct wireless_dev *wdev = dev->ieee80211_ptr;
11824         bool fils_sk_offload;
11825         u32 auth_type;
11826         u32 changed = 0;
11827         int ret;
11828
11829         if (!rdev->ops->update_connect_params)
11830                 return -EOPNOTSUPP;
11831
11832         if (info->attrs[NL80211_ATTR_IE]) {
11833                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11834                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11835                 changed |= UPDATE_ASSOC_IES;
11836         }
11837
11838         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
11839                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
11840
11841         /*
11842          * when driver supports fils-sk offload all attributes must be
11843          * provided. So the else covers "fils-sk-not-all" and
11844          * "no-fils-sk-any".
11845          */
11846         if (fils_sk_offload &&
11847             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11848             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11849             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11850             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11851                 connect.fils_erp_username =
11852                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11853                 connect.fils_erp_username_len =
11854                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11855                 connect.fils_erp_realm =
11856                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11857                 connect.fils_erp_realm_len =
11858                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11859                 connect.fils_erp_next_seq_num =
11860                         nla_get_u16(
11861                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11862                 connect.fils_erp_rrk =
11863                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11864                 connect.fils_erp_rrk_len =
11865                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11866                 changed |= UPDATE_FILS_ERP_INFO;
11867         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11868                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11869                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11870                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11871                 return -EINVAL;
11872         }
11873
11874         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11875                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11876                 if (!nl80211_valid_auth_type(rdev, auth_type,
11877                                              NL80211_CMD_CONNECT))
11878                         return -EINVAL;
11879
11880                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11881                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11882                         return -EINVAL;
11883
11884                 connect.auth_type = auth_type;
11885                 changed |= UPDATE_AUTH_TYPE;
11886         }
11887
11888         wdev_lock(dev->ieee80211_ptr);
11889         if (!wdev->connected)
11890                 ret = -ENOLINK;
11891         else
11892                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11893         wdev_unlock(dev->ieee80211_ptr);
11894
11895         return ret;
11896 }
11897
11898 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11899 {
11900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11901         struct net_device *dev = info->user_ptr[1];
11902         u16 reason;
11903         int ret;
11904
11905         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11906             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11907                 return -EPERM;
11908
11909         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11910                 reason = WLAN_REASON_DEAUTH_LEAVING;
11911         else
11912                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11913
11914         if (reason == 0)
11915                 return -EINVAL;
11916
11917         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11918             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11919                 return -EOPNOTSUPP;
11920
11921         wdev_lock(dev->ieee80211_ptr);
11922         ret = cfg80211_disconnect(rdev, dev, reason, true);
11923         wdev_unlock(dev->ieee80211_ptr);
11924         return ret;
11925 }
11926
11927 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11928 {
11929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11930         struct net *net;
11931         int err;
11932
11933         if (info->attrs[NL80211_ATTR_PID]) {
11934                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11935
11936                 net = get_net_ns_by_pid(pid);
11937         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11938                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11939
11940                 net = get_net_ns_by_fd(fd);
11941         } else {
11942                 return -EINVAL;
11943         }
11944
11945         if (IS_ERR(net))
11946                 return PTR_ERR(net);
11947
11948         err = 0;
11949
11950         /* check if anything to do */
11951         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11952                 err = cfg80211_switch_netns(rdev, net);
11953
11954         put_net(net);
11955         return err;
11956 }
11957
11958 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11959 {
11960         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11961         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11962                         struct cfg80211_pmksa *pmksa) = NULL;
11963         struct net_device *dev = info->user_ptr[1];
11964         struct cfg80211_pmksa pmksa;
11965
11966         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11967
11968         if (!info->attrs[NL80211_ATTR_PMKID])
11969                 return -EINVAL;
11970
11971         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11972
11973         if (info->attrs[NL80211_ATTR_MAC]) {
11974                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11975         } else if (info->attrs[NL80211_ATTR_SSID] &&
11976                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11977                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11978                     info->attrs[NL80211_ATTR_PMK])) {
11979                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11980                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11981                 pmksa.cache_id =
11982                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11983         } else {
11984                 return -EINVAL;
11985         }
11986         if (info->attrs[NL80211_ATTR_PMK]) {
11987                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11988                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11989         }
11990
11991         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11992                 pmksa.pmk_lifetime =
11993                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11994
11995         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11996                 pmksa.pmk_reauth_threshold =
11997                         nla_get_u8(
11998                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11999
12000         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12001             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12002             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12003               wiphy_ext_feature_isset(&rdev->wiphy,
12004                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12005                 return -EOPNOTSUPP;
12006
12007         switch (info->genlhdr->cmd) {
12008         case NL80211_CMD_SET_PMKSA:
12009                 rdev_ops = rdev->ops->set_pmksa;
12010                 break;
12011         case NL80211_CMD_DEL_PMKSA:
12012                 rdev_ops = rdev->ops->del_pmksa;
12013                 break;
12014         default:
12015                 WARN_ON(1);
12016                 break;
12017         }
12018
12019         if (!rdev_ops)
12020                 return -EOPNOTSUPP;
12021
12022         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12023 }
12024
12025 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12026 {
12027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12028         struct net_device *dev = info->user_ptr[1];
12029
12030         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12031             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12032                 return -EOPNOTSUPP;
12033
12034         if (!rdev->ops->flush_pmksa)
12035                 return -EOPNOTSUPP;
12036
12037         return rdev_flush_pmksa(rdev, dev);
12038 }
12039
12040 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12041 {
12042         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12043         struct net_device *dev = info->user_ptr[1];
12044         u8 action_code, dialog_token;
12045         u32 peer_capability = 0;
12046         u16 status_code;
12047         u8 *peer;
12048         bool initiator;
12049
12050         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12051             !rdev->ops->tdls_mgmt)
12052                 return -EOPNOTSUPP;
12053
12054         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12055             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12056             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12057             !info->attrs[NL80211_ATTR_IE] ||
12058             !info->attrs[NL80211_ATTR_MAC])
12059                 return -EINVAL;
12060
12061         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12062         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12063         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12064         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12065         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12066         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12067                 peer_capability =
12068                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12069
12070         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
12071                               dialog_token, status_code, peer_capability,
12072                               initiator,
12073                               nla_data(info->attrs[NL80211_ATTR_IE]),
12074                               nla_len(info->attrs[NL80211_ATTR_IE]));
12075 }
12076
12077 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12078 {
12079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12080         struct net_device *dev = info->user_ptr[1];
12081         enum nl80211_tdls_operation operation;
12082         u8 *peer;
12083
12084         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12085             !rdev->ops->tdls_oper)
12086                 return -EOPNOTSUPP;
12087
12088         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12089             !info->attrs[NL80211_ATTR_MAC])
12090                 return -EINVAL;
12091
12092         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12093         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12094
12095         return rdev_tdls_oper(rdev, dev, peer, operation);
12096 }
12097
12098 static int nl80211_remain_on_channel(struct sk_buff *skb,
12099                                      struct genl_info *info)
12100 {
12101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12102         unsigned int link_id = nl80211_link_id(info->attrs);
12103         struct wireless_dev *wdev = info->user_ptr[1];
12104         struct cfg80211_chan_def chandef;
12105         struct sk_buff *msg;
12106         void *hdr;
12107         u64 cookie;
12108         u32 duration;
12109         int err;
12110
12111         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12112             !info->attrs[NL80211_ATTR_DURATION])
12113                 return -EINVAL;
12114
12115         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12116
12117         if (!rdev->ops->remain_on_channel ||
12118             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12119                 return -EOPNOTSUPP;
12120
12121         /*
12122          * We should be on that channel for at least a minimum amount of
12123          * time (10ms) but no longer than the driver supports.
12124          */
12125         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12126             duration > rdev->wiphy.max_remain_on_channel_duration)
12127                 return -EINVAL;
12128
12129         err = nl80211_parse_chandef(rdev, info, &chandef);
12130         if (err)
12131                 return err;
12132
12133         wdev_lock(wdev);
12134         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12135                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12136
12137                 oper_chandef = wdev_chandef(wdev, link_id);
12138
12139                 if (WARN_ON(!oper_chandef)) {
12140                         /* cannot happen since we must beacon to get here */
12141                         WARN_ON(1);
12142                         wdev_unlock(wdev);
12143                         return -EBUSY;
12144                 }
12145
12146                 /* note: returns first one if identical chandefs */
12147                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12148                                                              oper_chandef);
12149
12150                 if (compat_chandef != &chandef) {
12151                         wdev_unlock(wdev);
12152                         return -EBUSY;
12153                 }
12154         }
12155         wdev_unlock(wdev);
12156
12157         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12158         if (!msg)
12159                 return -ENOMEM;
12160
12161         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12162                              NL80211_CMD_REMAIN_ON_CHANNEL);
12163         if (!hdr) {
12164                 err = -ENOBUFS;
12165                 goto free_msg;
12166         }
12167
12168         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12169                                      duration, &cookie);
12170
12171         if (err)
12172                 goto free_msg;
12173
12174         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12175                               NL80211_ATTR_PAD))
12176                 goto nla_put_failure;
12177
12178         genlmsg_end(msg, hdr);
12179
12180         return genlmsg_reply(msg, info);
12181
12182  nla_put_failure:
12183         err = -ENOBUFS;
12184  free_msg:
12185         nlmsg_free(msg);
12186         return err;
12187 }
12188
12189 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12190                                             struct genl_info *info)
12191 {
12192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12193         struct wireless_dev *wdev = info->user_ptr[1];
12194         u64 cookie;
12195
12196         if (!info->attrs[NL80211_ATTR_COOKIE])
12197                 return -EINVAL;
12198
12199         if (!rdev->ops->cancel_remain_on_channel)
12200                 return -EOPNOTSUPP;
12201
12202         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12203
12204         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12205 }
12206
12207 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12208                                        struct genl_info *info)
12209 {
12210         struct cfg80211_bitrate_mask mask;
12211         unsigned int link_id = nl80211_link_id(info->attrs);
12212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12213         struct net_device *dev = info->user_ptr[1];
12214         struct wireless_dev *wdev = dev->ieee80211_ptr;
12215         int err;
12216
12217         if (!rdev->ops->set_bitrate_mask)
12218                 return -EOPNOTSUPP;
12219
12220         wdev_lock(wdev);
12221         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12222                                             NL80211_ATTR_TX_RATES, &mask,
12223                                             dev, true, link_id);
12224         if (err)
12225                 goto out;
12226
12227         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12228 out:
12229         wdev_unlock(wdev);
12230         return err;
12231 }
12232
12233 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12234 {
12235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12236         struct wireless_dev *wdev = info->user_ptr[1];
12237         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12238
12239         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12240                 return -EINVAL;
12241
12242         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12243                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12244
12245         switch (wdev->iftype) {
12246         case NL80211_IFTYPE_STATION:
12247         case NL80211_IFTYPE_ADHOC:
12248         case NL80211_IFTYPE_P2P_CLIENT:
12249         case NL80211_IFTYPE_AP:
12250         case NL80211_IFTYPE_AP_VLAN:
12251         case NL80211_IFTYPE_MESH_POINT:
12252         case NL80211_IFTYPE_P2P_GO:
12253         case NL80211_IFTYPE_P2P_DEVICE:
12254                 break;
12255         case NL80211_IFTYPE_NAN:
12256         default:
12257                 return -EOPNOTSUPP;
12258         }
12259
12260         /* not much point in registering if we can't reply */
12261         if (!rdev->ops->mgmt_tx)
12262                 return -EOPNOTSUPP;
12263
12264         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12265             !wiphy_ext_feature_isset(&rdev->wiphy,
12266                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12267                 GENL_SET_ERR_MSG(info,
12268                                  "multicast RX registrations are not supported");
12269                 return -EOPNOTSUPP;
12270         }
12271
12272         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12273                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12274                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12275                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12276                                            info->extack);
12277 }
12278
12279 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12280 {
12281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12282         struct wireless_dev *wdev = info->user_ptr[1];
12283         struct cfg80211_chan_def chandef;
12284         int err;
12285         void *hdr = NULL;
12286         u64 cookie;
12287         struct sk_buff *msg = NULL;
12288         struct cfg80211_mgmt_tx_params params = {
12289                 .dont_wait_for_ack =
12290                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12291         };
12292
12293         if (!info->attrs[NL80211_ATTR_FRAME])
12294                 return -EINVAL;
12295
12296         if (!rdev->ops->mgmt_tx)
12297                 return -EOPNOTSUPP;
12298
12299         switch (wdev->iftype) {
12300         case NL80211_IFTYPE_P2P_DEVICE:
12301                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12302                         return -EINVAL;
12303                 break;
12304         case NL80211_IFTYPE_STATION:
12305         case NL80211_IFTYPE_ADHOC:
12306         case NL80211_IFTYPE_P2P_CLIENT:
12307         case NL80211_IFTYPE_AP:
12308         case NL80211_IFTYPE_AP_VLAN:
12309         case NL80211_IFTYPE_MESH_POINT:
12310         case NL80211_IFTYPE_P2P_GO:
12311                 break;
12312         case NL80211_IFTYPE_NAN:
12313         default:
12314                 return -EOPNOTSUPP;
12315         }
12316
12317         if (info->attrs[NL80211_ATTR_DURATION]) {
12318                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12319                         return -EINVAL;
12320                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12321
12322                 /*
12323                  * We should wait on the channel for at least a minimum amount
12324                  * of time (10ms) but no longer than the driver supports.
12325                  */
12326                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12327                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12328                         return -EINVAL;
12329         }
12330
12331         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12332
12333         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12334                 return -EINVAL;
12335
12336         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12337
12338         /* get the channel if any has been specified, otherwise pass NULL to
12339          * the driver. The latter will use the current one
12340          */
12341         chandef.chan = NULL;
12342         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12343                 err = nl80211_parse_chandef(rdev, info, &chandef);
12344                 if (err)
12345                         return err;
12346         }
12347
12348         if (!chandef.chan && params.offchan)
12349                 return -EINVAL;
12350
12351         wdev_lock(wdev);
12352         if (params.offchan &&
12353             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12354                 wdev_unlock(wdev);
12355                 return -EBUSY;
12356         }
12357
12358         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12359         /*
12360          * This now races due to the unlock, but we cannot check
12361          * the valid links for the _station_ anyway, so that's up
12362          * to the driver.
12363          */
12364         if (params.link_id >= 0 &&
12365             !(wdev->valid_links & BIT(params.link_id))) {
12366                 wdev_unlock(wdev);
12367                 return -EINVAL;
12368         }
12369         wdev_unlock(wdev);
12370
12371         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12372         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12373
12374         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12375                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12376                 int i;
12377
12378                 if (len % sizeof(u16))
12379                         return -EINVAL;
12380
12381                 params.n_csa_offsets = len / sizeof(u16);
12382                 params.csa_offsets =
12383                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12384
12385                 /* check that all the offsets fit the frame */
12386                 for (i = 0; i < params.n_csa_offsets; i++) {
12387                         if (params.csa_offsets[i] >= params.len)
12388                                 return -EINVAL;
12389                 }
12390         }
12391
12392         if (!params.dont_wait_for_ack) {
12393                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12394                 if (!msg)
12395                         return -ENOMEM;
12396
12397                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12398                                      NL80211_CMD_FRAME);
12399                 if (!hdr) {
12400                         err = -ENOBUFS;
12401                         goto free_msg;
12402                 }
12403         }
12404
12405         params.chan = chandef.chan;
12406         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12407         if (err)
12408                 goto free_msg;
12409
12410         if (msg) {
12411                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12412                                       NL80211_ATTR_PAD))
12413                         goto nla_put_failure;
12414
12415                 genlmsg_end(msg, hdr);
12416                 return genlmsg_reply(msg, info);
12417         }
12418
12419         return 0;
12420
12421  nla_put_failure:
12422         err = -ENOBUFS;
12423  free_msg:
12424         nlmsg_free(msg);
12425         return err;
12426 }
12427
12428 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12429 {
12430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12431         struct wireless_dev *wdev = info->user_ptr[1];
12432         u64 cookie;
12433
12434         if (!info->attrs[NL80211_ATTR_COOKIE])
12435                 return -EINVAL;
12436
12437         if (!rdev->ops->mgmt_tx_cancel_wait)
12438                 return -EOPNOTSUPP;
12439
12440         switch (wdev->iftype) {
12441         case NL80211_IFTYPE_STATION:
12442         case NL80211_IFTYPE_ADHOC:
12443         case NL80211_IFTYPE_P2P_CLIENT:
12444         case NL80211_IFTYPE_AP:
12445         case NL80211_IFTYPE_AP_VLAN:
12446         case NL80211_IFTYPE_P2P_GO:
12447         case NL80211_IFTYPE_P2P_DEVICE:
12448                 break;
12449         case NL80211_IFTYPE_NAN:
12450         default:
12451                 return -EOPNOTSUPP;
12452         }
12453
12454         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12455
12456         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12457 }
12458
12459 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12460 {
12461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12462         struct wireless_dev *wdev;
12463         struct net_device *dev = info->user_ptr[1];
12464         u8 ps_state;
12465         bool state;
12466         int err;
12467
12468         if (!info->attrs[NL80211_ATTR_PS_STATE])
12469                 return -EINVAL;
12470
12471         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12472
12473         wdev = dev->ieee80211_ptr;
12474
12475         if (!rdev->ops->set_power_mgmt)
12476                 return -EOPNOTSUPP;
12477
12478         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12479
12480         if (state == wdev->ps)
12481                 return 0;
12482
12483         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12484         if (!err)
12485                 wdev->ps = state;
12486         return err;
12487 }
12488
12489 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12490 {
12491         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12492         enum nl80211_ps_state ps_state;
12493         struct wireless_dev *wdev;
12494         struct net_device *dev = info->user_ptr[1];
12495         struct sk_buff *msg;
12496         void *hdr;
12497         int err;
12498
12499         wdev = dev->ieee80211_ptr;
12500
12501         if (!rdev->ops->set_power_mgmt)
12502                 return -EOPNOTSUPP;
12503
12504         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12505         if (!msg)
12506                 return -ENOMEM;
12507
12508         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12509                              NL80211_CMD_GET_POWER_SAVE);
12510         if (!hdr) {
12511                 err = -ENOBUFS;
12512                 goto free_msg;
12513         }
12514
12515         if (wdev->ps)
12516                 ps_state = NL80211_PS_ENABLED;
12517         else
12518                 ps_state = NL80211_PS_DISABLED;
12519
12520         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12521                 goto nla_put_failure;
12522
12523         genlmsg_end(msg, hdr);
12524         return genlmsg_reply(msg, info);
12525
12526  nla_put_failure:
12527         err = -ENOBUFS;
12528  free_msg:
12529         nlmsg_free(msg);
12530         return err;
12531 }
12532
12533 static const struct nla_policy
12534 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12535         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12536         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12537         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12538         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12539         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12540         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12541         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12542 };
12543
12544 static int nl80211_set_cqm_txe(struct genl_info *info,
12545                                u32 rate, u32 pkts, u32 intvl)
12546 {
12547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12548         struct net_device *dev = info->user_ptr[1];
12549         struct wireless_dev *wdev = dev->ieee80211_ptr;
12550
12551         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12552                 return -EINVAL;
12553
12554         if (!rdev->ops->set_cqm_txe_config)
12555                 return -EOPNOTSUPP;
12556
12557         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12558             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12559                 return -EOPNOTSUPP;
12560
12561         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12562 }
12563
12564 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12565                                     struct net_device *dev)
12566 {
12567         struct wireless_dev *wdev = dev->ieee80211_ptr;
12568         s32 last, low, high;
12569         u32 hyst;
12570         int i, n, low_index;
12571         int err;
12572
12573         /* RSSI reporting disabled? */
12574         if (!wdev->cqm_config)
12575                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12576
12577         /*
12578          * Obtain current RSSI value if possible, if not and no RSSI threshold
12579          * event has been received yet, we should receive an event after a
12580          * connection is established and enough beacons received to calculate
12581          * the average.
12582          */
12583         if (!wdev->cqm_config->last_rssi_event_value &&
12584             wdev->links[0].client.current_bss &&
12585             rdev->ops->get_station) {
12586                 struct station_info sinfo = {};
12587                 u8 *mac_addr;
12588
12589                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12590
12591                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12592                 if (err)
12593                         return err;
12594
12595                 cfg80211_sinfo_release_content(&sinfo);
12596                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12597                         wdev->cqm_config->last_rssi_event_value =
12598                                 (s8) sinfo.rx_beacon_signal_avg;
12599         }
12600
12601         last = wdev->cqm_config->last_rssi_event_value;
12602         hyst = wdev->cqm_config->rssi_hyst;
12603         n = wdev->cqm_config->n_rssi_thresholds;
12604
12605         for (i = 0; i < n; i++) {
12606                 i = array_index_nospec(i, n);
12607                 if (last < wdev->cqm_config->rssi_thresholds[i])
12608                         break;
12609         }
12610
12611         low_index = i - 1;
12612         if (low_index >= 0) {
12613                 low_index = array_index_nospec(low_index, n);
12614                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12615         } else {
12616                 low = S32_MIN;
12617         }
12618         if (i < n) {
12619                 i = array_index_nospec(i, n);
12620                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12621         } else {
12622                 high = S32_MAX;
12623         }
12624
12625         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12626 }
12627
12628 static int nl80211_set_cqm_rssi(struct genl_info *info,
12629                                 const s32 *thresholds, int n_thresholds,
12630                                 u32 hysteresis)
12631 {
12632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12633         struct net_device *dev = info->user_ptr[1];
12634         struct wireless_dev *wdev = dev->ieee80211_ptr;
12635         int i, err;
12636         s32 prev = S32_MIN;
12637
12638         /* Check all values negative and sorted */
12639         for (i = 0; i < n_thresholds; i++) {
12640                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12641                         return -EINVAL;
12642
12643                 prev = thresholds[i];
12644         }
12645
12646         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12647             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12648                 return -EOPNOTSUPP;
12649
12650         wdev_lock(wdev);
12651         cfg80211_cqm_config_free(wdev);
12652         wdev_unlock(wdev);
12653
12654         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12655                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12656                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12657
12658                 return rdev_set_cqm_rssi_config(rdev, dev,
12659                                                 thresholds[0], hysteresis);
12660         }
12661
12662         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12663                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12664                 return -EOPNOTSUPP;
12665
12666         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12667                 n_thresholds = 0;
12668
12669         wdev_lock(wdev);
12670         if (n_thresholds) {
12671                 struct cfg80211_cqm_config *cqm_config;
12672
12673                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12674                                                  n_thresholds),
12675                                      GFP_KERNEL);
12676                 if (!cqm_config) {
12677                         err = -ENOMEM;
12678                         goto unlock;
12679                 }
12680
12681                 cqm_config->rssi_hyst = hysteresis;
12682                 cqm_config->n_rssi_thresholds = n_thresholds;
12683                 memcpy(cqm_config->rssi_thresholds, thresholds,
12684                        flex_array_size(cqm_config, rssi_thresholds,
12685                                        n_thresholds));
12686
12687                 wdev->cqm_config = cqm_config;
12688         }
12689
12690         err = cfg80211_cqm_rssi_update(rdev, dev);
12691
12692 unlock:
12693         wdev_unlock(wdev);
12694
12695         return err;
12696 }
12697
12698 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12699 {
12700         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12701         struct nlattr *cqm;
12702         int err;
12703
12704         cqm = info->attrs[NL80211_ATTR_CQM];
12705         if (!cqm)
12706                 return -EINVAL;
12707
12708         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12709                                           nl80211_attr_cqm_policy,
12710                                           info->extack);
12711         if (err)
12712                 return err;
12713
12714         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12715             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12716                 const s32 *thresholds =
12717                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12718                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12719                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12720
12721                 if (len % 4)
12722                         return -EINVAL;
12723
12724                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12725                                             hysteresis);
12726         }
12727
12728         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12729             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12730             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12731                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12732                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12733                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12734
12735                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12736         }
12737
12738         return -EINVAL;
12739 }
12740
12741 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12742 {
12743         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12744         struct net_device *dev = info->user_ptr[1];
12745         struct ocb_setup setup = {};
12746         int err;
12747
12748         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12749         if (err)
12750                 return err;
12751
12752         return cfg80211_join_ocb(rdev, dev, &setup);
12753 }
12754
12755 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12756 {
12757         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12758         struct net_device *dev = info->user_ptr[1];
12759
12760         return cfg80211_leave_ocb(rdev, dev);
12761 }
12762
12763 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12764 {
12765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12766         struct net_device *dev = info->user_ptr[1];
12767         struct mesh_config cfg;
12768         struct mesh_setup setup;
12769         int err;
12770
12771         /* start with default */
12772         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
12773         memcpy(&setup, &default_mesh_setup, sizeof(setup));
12774
12775         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
12776                 /* and parse parameters if given */
12777                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
12778                 if (err)
12779                         return err;
12780         }
12781
12782         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
12783             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
12784                 return -EINVAL;
12785
12786         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
12787         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
12788
12789         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
12790             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
12791                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
12792                         return -EINVAL;
12793
12794         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
12795                 setup.beacon_interval =
12796                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
12797
12798                 err = cfg80211_validate_beacon_int(rdev,
12799                                                    NL80211_IFTYPE_MESH_POINT,
12800                                                    setup.beacon_interval);
12801                 if (err)
12802                         return err;
12803         }
12804
12805         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
12806                 setup.dtim_period =
12807                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
12808                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
12809                         return -EINVAL;
12810         }
12811
12812         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
12813                 /* parse additional setup parameters if given */
12814                 err = nl80211_parse_mesh_setup(info, &setup);
12815                 if (err)
12816                         return err;
12817         }
12818
12819         if (setup.user_mpm)
12820                 cfg.auto_open_plinks = false;
12821
12822         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12823                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12824                 if (err)
12825                         return err;
12826         } else {
12827                 /* __cfg80211_join_mesh() will sort it out */
12828                 setup.chandef.chan = NULL;
12829         }
12830
12831         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
12832                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12833                 int n_rates =
12834                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12835                 struct ieee80211_supported_band *sband;
12836
12837                 if (!setup.chandef.chan)
12838                         return -EINVAL;
12839
12840                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
12841
12842                 err = ieee80211_get_ratemask(sband, rates, n_rates,
12843                                              &setup.basic_rates);
12844                 if (err)
12845                         return err;
12846         }
12847
12848         if (info->attrs[NL80211_ATTR_TX_RATES]) {
12849                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12850                                                     NL80211_ATTR_TX_RATES,
12851                                                     &setup.beacon_rate,
12852                                                     dev, false, 0);
12853                 if (err)
12854                         return err;
12855
12856                 if (!setup.chandef.chan)
12857                         return -EINVAL;
12858
12859                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
12860                                               &setup.beacon_rate);
12861                 if (err)
12862                         return err;
12863         }
12864
12865         setup.userspace_handles_dfs =
12866                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
12867
12868         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
12869                 int r = validate_pae_over_nl80211(rdev, info);
12870
12871                 if (r < 0)
12872                         return r;
12873
12874                 setup.control_port_over_nl80211 = true;
12875         }
12876
12877         wdev_lock(dev->ieee80211_ptr);
12878         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
12879         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
12880                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12881         wdev_unlock(dev->ieee80211_ptr);
12882
12883         return err;
12884 }
12885
12886 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12887 {
12888         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12889         struct net_device *dev = info->user_ptr[1];
12890
12891         return cfg80211_leave_mesh(rdev, dev);
12892 }
12893
12894 #ifdef CONFIG_PM
12895 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
12896                                         struct cfg80211_registered_device *rdev)
12897 {
12898         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
12899         struct nlattr *nl_pats, *nl_pat;
12900         int i, pat_len;
12901
12902         if (!wowlan->n_patterns)
12903                 return 0;
12904
12905         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12906         if (!nl_pats)
12907                 return -ENOBUFS;
12908
12909         for (i = 0; i < wowlan->n_patterns; i++) {
12910                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12911                 if (!nl_pat)
12912                         return -ENOBUFS;
12913                 pat_len = wowlan->patterns[i].pattern_len;
12914                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12915                             wowlan->patterns[i].mask) ||
12916                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12917                             wowlan->patterns[i].pattern) ||
12918                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12919                                 wowlan->patterns[i].pkt_offset))
12920                         return -ENOBUFS;
12921                 nla_nest_end(msg, nl_pat);
12922         }
12923         nla_nest_end(msg, nl_pats);
12924
12925         return 0;
12926 }
12927
12928 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12929                                    struct cfg80211_wowlan_tcp *tcp)
12930 {
12931         struct nlattr *nl_tcp;
12932
12933         if (!tcp)
12934                 return 0;
12935
12936         nl_tcp = nla_nest_start_noflag(msg,
12937                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12938         if (!nl_tcp)
12939                 return -ENOBUFS;
12940
12941         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12942             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12943             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12944             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12945             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12946             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12947                     tcp->payload_len, tcp->payload) ||
12948             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12949                         tcp->data_interval) ||
12950             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12951                     tcp->wake_len, tcp->wake_data) ||
12952             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12953                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12954                 return -ENOBUFS;
12955
12956         if (tcp->payload_seq.len &&
12957             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12958                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12959                 return -ENOBUFS;
12960
12961         if (tcp->payload_tok.len &&
12962             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12963                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12964                     &tcp->payload_tok))
12965                 return -ENOBUFS;
12966
12967         nla_nest_end(msg, nl_tcp);
12968
12969         return 0;
12970 }
12971
12972 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12973                                   struct cfg80211_sched_scan_request *req)
12974 {
12975         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12976         int i;
12977
12978         if (!req)
12979                 return 0;
12980
12981         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12982         if (!nd)
12983                 return -ENOBUFS;
12984
12985         if (req->n_scan_plans == 1 &&
12986             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12987                         req->scan_plans[0].interval * 1000))
12988                 return -ENOBUFS;
12989
12990         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12991                 return -ENOBUFS;
12992
12993         if (req->relative_rssi_set) {
12994                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12995
12996                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12997                                req->relative_rssi))
12998                         return -ENOBUFS;
12999
13000                 rssi_adjust.band = req->rssi_adjust.band;
13001                 rssi_adjust.delta = req->rssi_adjust.delta;
13002                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13003                             sizeof(rssi_adjust), &rssi_adjust))
13004                         return -ENOBUFS;
13005         }
13006
13007         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13008         if (!freqs)
13009                 return -ENOBUFS;
13010
13011         for (i = 0; i < req->n_channels; i++) {
13012                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13013                         return -ENOBUFS;
13014         }
13015
13016         nla_nest_end(msg, freqs);
13017
13018         if (req->n_match_sets) {
13019                 matches = nla_nest_start_noflag(msg,
13020                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13021                 if (!matches)
13022                         return -ENOBUFS;
13023
13024                 for (i = 0; i < req->n_match_sets; i++) {
13025                         match = nla_nest_start_noflag(msg, i);
13026                         if (!match)
13027                                 return -ENOBUFS;
13028
13029                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13030                                     req->match_sets[i].ssid.ssid_len,
13031                                     req->match_sets[i].ssid.ssid))
13032                                 return -ENOBUFS;
13033                         nla_nest_end(msg, match);
13034                 }
13035                 nla_nest_end(msg, matches);
13036         }
13037
13038         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13039         if (!scan_plans)
13040                 return -ENOBUFS;
13041
13042         for (i = 0; i < req->n_scan_plans; i++) {
13043                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13044                 if (!scan_plan)
13045                         return -ENOBUFS;
13046
13047                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13048                                 req->scan_plans[i].interval) ||
13049                     (req->scan_plans[i].iterations &&
13050                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13051                                  req->scan_plans[i].iterations)))
13052                         return -ENOBUFS;
13053                 nla_nest_end(msg, scan_plan);
13054         }
13055         nla_nest_end(msg, scan_plans);
13056
13057         nla_nest_end(msg, nd);
13058
13059         return 0;
13060 }
13061
13062 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13063 {
13064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13065         struct sk_buff *msg;
13066         void *hdr;
13067         u32 size = NLMSG_DEFAULT_SIZE;
13068
13069         if (!rdev->wiphy.wowlan)
13070                 return -EOPNOTSUPP;
13071
13072         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13073                 /* adjust size to have room for all the data */
13074                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13075                         rdev->wiphy.wowlan_config->tcp->payload_len +
13076                         rdev->wiphy.wowlan_config->tcp->wake_len +
13077                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13078         }
13079
13080         msg = nlmsg_new(size, GFP_KERNEL);
13081         if (!msg)
13082                 return -ENOMEM;
13083
13084         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13085                              NL80211_CMD_GET_WOWLAN);
13086         if (!hdr)
13087                 goto nla_put_failure;
13088
13089         if (rdev->wiphy.wowlan_config) {
13090                 struct nlattr *nl_wowlan;
13091
13092                 nl_wowlan = nla_nest_start_noflag(msg,
13093                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13094                 if (!nl_wowlan)
13095                         goto nla_put_failure;
13096
13097                 if ((rdev->wiphy.wowlan_config->any &&
13098                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13099                     (rdev->wiphy.wowlan_config->disconnect &&
13100                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13101                     (rdev->wiphy.wowlan_config->magic_pkt &&
13102                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13103                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13104                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13105                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13106                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13107                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13108                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13109                     (rdev->wiphy.wowlan_config->rfkill_release &&
13110                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13111                         goto nla_put_failure;
13112
13113                 if (nl80211_send_wowlan_patterns(msg, rdev))
13114                         goto nla_put_failure;
13115
13116                 if (nl80211_send_wowlan_tcp(msg,
13117                                             rdev->wiphy.wowlan_config->tcp))
13118                         goto nla_put_failure;
13119
13120                 if (nl80211_send_wowlan_nd(
13121                             msg,
13122                             rdev->wiphy.wowlan_config->nd_config))
13123                         goto nla_put_failure;
13124
13125                 nla_nest_end(msg, nl_wowlan);
13126         }
13127
13128         genlmsg_end(msg, hdr);
13129         return genlmsg_reply(msg, info);
13130
13131 nla_put_failure:
13132         nlmsg_free(msg);
13133         return -ENOBUFS;
13134 }
13135
13136 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13137                                     struct nlattr *attr,
13138                                     struct cfg80211_wowlan *trig)
13139 {
13140         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13141         struct cfg80211_wowlan_tcp *cfg;
13142         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13143         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13144         u32 size;
13145         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13146         int err, port;
13147
13148         if (!rdev->wiphy.wowlan->tcp)
13149                 return -EINVAL;
13150
13151         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13152                                           nl80211_wowlan_tcp_policy, NULL);
13153         if (err)
13154                 return err;
13155
13156         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13157             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13158             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13159             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13160             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13161             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13162             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13163             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13164                 return -EINVAL;
13165
13166         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13167         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13168                 return -EINVAL;
13169
13170         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13171                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13172             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13173                 return -EINVAL;
13174
13175         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13176         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13177                 return -EINVAL;
13178
13179         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13180         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13181                 return -EINVAL;
13182
13183         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13184                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13185
13186                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13187                 tokens_size = tokln - sizeof(*tok);
13188
13189                 if (!tok->len || tokens_size % tok->len)
13190                         return -EINVAL;
13191                 if (!rdev->wiphy.wowlan->tcp->tok)
13192                         return -EINVAL;
13193                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13194                         return -EINVAL;
13195                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13196                         return -EINVAL;
13197                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13198                         return -EINVAL;
13199                 if (tok->offset + tok->len > data_size)
13200                         return -EINVAL;
13201         }
13202
13203         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13204                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13205                 if (!rdev->wiphy.wowlan->tcp->seq)
13206                         return -EINVAL;
13207                 if (seq->len == 0 || seq->len > 4)
13208                         return -EINVAL;
13209                 if (seq->len + seq->offset > data_size)
13210                         return -EINVAL;
13211         }
13212
13213         size = sizeof(*cfg);
13214         size += data_size;
13215         size += wake_size + wake_mask_size;
13216         size += tokens_size;
13217
13218         cfg = kzalloc(size, GFP_KERNEL);
13219         if (!cfg)
13220                 return -ENOMEM;
13221         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13222         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13223         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13224                ETH_ALEN);
13225         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13226                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13227         else
13228                 port = 0;
13229 #ifdef CONFIG_INET
13230         /* allocate a socket and port for it and use it */
13231         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13232                             IPPROTO_TCP, &cfg->sock, 1);
13233         if (err) {
13234                 kfree(cfg);
13235                 return err;
13236         }
13237         if (inet_csk_get_port(cfg->sock->sk, port)) {
13238                 sock_release(cfg->sock);
13239                 kfree(cfg);
13240                 return -EADDRINUSE;
13241         }
13242         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13243 #else
13244         if (!port) {
13245                 kfree(cfg);
13246                 return -EINVAL;
13247         }
13248         cfg->src_port = port;
13249 #endif
13250
13251         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13252         cfg->payload_len = data_size;
13253         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13254         memcpy((void *)cfg->payload,
13255                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13256                data_size);
13257         if (seq)
13258                 cfg->payload_seq = *seq;
13259         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13260         cfg->wake_len = wake_size;
13261         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13262         memcpy((void *)cfg->wake_data,
13263                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13264                wake_size);
13265         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13266                          data_size + wake_size;
13267         memcpy((void *)cfg->wake_mask,
13268                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13269                wake_mask_size);
13270         if (tok) {
13271                 cfg->tokens_size = tokens_size;
13272                 cfg->payload_tok = *tok;
13273                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13274                        tokens_size);
13275         }
13276
13277         trig->tcp = cfg;
13278
13279         return 0;
13280 }
13281
13282 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13283                                    const struct wiphy_wowlan_support *wowlan,
13284                                    struct nlattr *attr,
13285                                    struct cfg80211_wowlan *trig)
13286 {
13287         struct nlattr **tb;
13288         int err;
13289
13290         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13291         if (!tb)
13292                 return -ENOMEM;
13293
13294         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13295                 err = -EOPNOTSUPP;
13296                 goto out;
13297         }
13298
13299         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13300                                           nl80211_policy, NULL);
13301         if (err)
13302                 goto out;
13303
13304         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13305                                                    wowlan->max_nd_match_sets);
13306         err = PTR_ERR_OR_ZERO(trig->nd_config);
13307         if (err)
13308                 trig->nd_config = NULL;
13309
13310 out:
13311         kfree(tb);
13312         return err;
13313 }
13314
13315 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13316 {
13317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13318         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13319         struct cfg80211_wowlan new_triggers = {};
13320         struct cfg80211_wowlan *ntrig;
13321         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13322         int err, i;
13323         bool prev_enabled = rdev->wiphy.wowlan_config;
13324         bool regular = false;
13325
13326         if (!wowlan)
13327                 return -EOPNOTSUPP;
13328
13329         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13330                 cfg80211_rdev_free_wowlan(rdev);
13331                 rdev->wiphy.wowlan_config = NULL;
13332                 goto set_wakeup;
13333         }
13334
13335         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13336                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13337                                           nl80211_wowlan_policy, info->extack);
13338         if (err)
13339                 return err;
13340
13341         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13342                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13343                         return -EINVAL;
13344                 new_triggers.any = true;
13345         }
13346
13347         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13348                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13349                         return -EINVAL;
13350                 new_triggers.disconnect = true;
13351                 regular = true;
13352         }
13353
13354         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13355                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13356                         return -EINVAL;
13357                 new_triggers.magic_pkt = true;
13358                 regular = true;
13359         }
13360
13361         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13362                 return -EINVAL;
13363
13364         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13365                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13366                         return -EINVAL;
13367                 new_triggers.gtk_rekey_failure = true;
13368                 regular = true;
13369         }
13370
13371         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13372                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13373                         return -EINVAL;
13374                 new_triggers.eap_identity_req = true;
13375                 regular = true;
13376         }
13377
13378         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13379                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13380                         return -EINVAL;
13381                 new_triggers.four_way_handshake = true;
13382                 regular = true;
13383         }
13384
13385         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13386                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13387                         return -EINVAL;
13388                 new_triggers.rfkill_release = true;
13389                 regular = true;
13390         }
13391
13392         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13393                 struct nlattr *pat;
13394                 int n_patterns = 0;
13395                 int rem, pat_len, mask_len, pkt_offset;
13396                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13397
13398                 regular = true;
13399
13400                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13401                                     rem)
13402                         n_patterns++;
13403                 if (n_patterns > wowlan->n_patterns)
13404                         return -EINVAL;
13405
13406                 new_triggers.patterns = kcalloc(n_patterns,
13407                                                 sizeof(new_triggers.patterns[0]),
13408                                                 GFP_KERNEL);
13409                 if (!new_triggers.patterns)
13410                         return -ENOMEM;
13411
13412                 new_triggers.n_patterns = n_patterns;
13413                 i = 0;
13414
13415                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13416                                     rem) {
13417                         u8 *mask_pat;
13418
13419                         err = nla_parse_nested_deprecated(pat_tb,
13420                                                           MAX_NL80211_PKTPAT,
13421                                                           pat,
13422                                                           nl80211_packet_pattern_policy,
13423                                                           info->extack);
13424                         if (err)
13425                                 goto error;
13426
13427                         err = -EINVAL;
13428                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13429                             !pat_tb[NL80211_PKTPAT_PATTERN])
13430                                 goto error;
13431                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13432                         mask_len = DIV_ROUND_UP(pat_len, 8);
13433                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13434                                 goto error;
13435                         if (pat_len > wowlan->pattern_max_len ||
13436                             pat_len < wowlan->pattern_min_len)
13437                                 goto error;
13438
13439                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13440                                 pkt_offset = 0;
13441                         else
13442                                 pkt_offset = nla_get_u32(
13443                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13444                         if (pkt_offset > wowlan->max_pkt_offset)
13445                                 goto error;
13446                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13447
13448                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13449                         if (!mask_pat) {
13450                                 err = -ENOMEM;
13451                                 goto error;
13452                         }
13453                         new_triggers.patterns[i].mask = mask_pat;
13454                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13455                                mask_len);
13456                         mask_pat += mask_len;
13457                         new_triggers.patterns[i].pattern = mask_pat;
13458                         new_triggers.patterns[i].pattern_len = pat_len;
13459                         memcpy(mask_pat,
13460                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13461                                pat_len);
13462                         i++;
13463                 }
13464         }
13465
13466         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13467                 regular = true;
13468                 err = nl80211_parse_wowlan_tcp(
13469                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13470                         &new_triggers);
13471                 if (err)
13472                         goto error;
13473         }
13474
13475         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13476                 regular = true;
13477                 err = nl80211_parse_wowlan_nd(
13478                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13479                         &new_triggers);
13480                 if (err)
13481                         goto error;
13482         }
13483
13484         /* The 'any' trigger means the device continues operating more or less
13485          * as in its normal operation mode and wakes up the host on most of the
13486          * normal interrupts (like packet RX, ...)
13487          * It therefore makes little sense to combine with the more constrained
13488          * wakeup trigger modes.
13489          */
13490         if (new_triggers.any && regular) {
13491                 err = -EINVAL;
13492                 goto error;
13493         }
13494
13495         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13496         if (!ntrig) {
13497                 err = -ENOMEM;
13498                 goto error;
13499         }
13500         cfg80211_rdev_free_wowlan(rdev);
13501         rdev->wiphy.wowlan_config = ntrig;
13502
13503  set_wakeup:
13504         if (rdev->ops->set_wakeup &&
13505             prev_enabled != !!rdev->wiphy.wowlan_config)
13506                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13507
13508         return 0;
13509  error:
13510         for (i = 0; i < new_triggers.n_patterns; i++)
13511                 kfree(new_triggers.patterns[i].mask);
13512         kfree(new_triggers.patterns);
13513         if (new_triggers.tcp && new_triggers.tcp->sock)
13514                 sock_release(new_triggers.tcp->sock);
13515         kfree(new_triggers.tcp);
13516         kfree(new_triggers.nd_config);
13517         return err;
13518 }
13519 #endif
13520
13521 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13522                                        struct cfg80211_registered_device *rdev)
13523 {
13524         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13525         int i, j, pat_len;
13526         struct cfg80211_coalesce_rules *rule;
13527
13528         if (!rdev->coalesce->n_rules)
13529                 return 0;
13530
13531         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13532         if (!nl_rules)
13533                 return -ENOBUFS;
13534
13535         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13536                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13537                 if (!nl_rule)
13538                         return -ENOBUFS;
13539
13540                 rule = &rdev->coalesce->rules[i];
13541                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13542                                 rule->delay))
13543                         return -ENOBUFS;
13544
13545                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13546                                 rule->condition))
13547                         return -ENOBUFS;
13548
13549                 nl_pats = nla_nest_start_noflag(msg,
13550                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13551                 if (!nl_pats)
13552                         return -ENOBUFS;
13553
13554                 for (j = 0; j < rule->n_patterns; j++) {
13555                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13556                         if (!nl_pat)
13557                                 return -ENOBUFS;
13558                         pat_len = rule->patterns[j].pattern_len;
13559                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13560                                     DIV_ROUND_UP(pat_len, 8),
13561                                     rule->patterns[j].mask) ||
13562                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13563                                     rule->patterns[j].pattern) ||
13564                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13565                                         rule->patterns[j].pkt_offset))
13566                                 return -ENOBUFS;
13567                         nla_nest_end(msg, nl_pat);
13568                 }
13569                 nla_nest_end(msg, nl_pats);
13570                 nla_nest_end(msg, nl_rule);
13571         }
13572         nla_nest_end(msg, nl_rules);
13573
13574         return 0;
13575 }
13576
13577 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13578 {
13579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13580         struct sk_buff *msg;
13581         void *hdr;
13582
13583         if (!rdev->wiphy.coalesce)
13584                 return -EOPNOTSUPP;
13585
13586         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13587         if (!msg)
13588                 return -ENOMEM;
13589
13590         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13591                              NL80211_CMD_GET_COALESCE);
13592         if (!hdr)
13593                 goto nla_put_failure;
13594
13595         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13596                 goto nla_put_failure;
13597
13598         genlmsg_end(msg, hdr);
13599         return genlmsg_reply(msg, info);
13600
13601 nla_put_failure:
13602         nlmsg_free(msg);
13603         return -ENOBUFS;
13604 }
13605
13606 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13607 {
13608         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13609         int i, j;
13610         struct cfg80211_coalesce_rules *rule;
13611
13612         if (!coalesce)
13613                 return;
13614
13615         for (i = 0; i < coalesce->n_rules; i++) {
13616                 rule = &coalesce->rules[i];
13617                 for (j = 0; j < rule->n_patterns; j++)
13618                         kfree(rule->patterns[j].mask);
13619                 kfree(rule->patterns);
13620         }
13621         kfree(coalesce->rules);
13622         kfree(coalesce);
13623         rdev->coalesce = NULL;
13624 }
13625
13626 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13627                                        struct nlattr *rule,
13628                                        struct cfg80211_coalesce_rules *new_rule)
13629 {
13630         int err, i;
13631         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13632         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13633         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13634         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13635
13636         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13637                                           rule, nl80211_coalesce_policy, NULL);
13638         if (err)
13639                 return err;
13640
13641         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13642                 new_rule->delay =
13643                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13644         if (new_rule->delay > coalesce->max_delay)
13645                 return -EINVAL;
13646
13647         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13648                 new_rule->condition =
13649                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13650
13651         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13652                 return -EINVAL;
13653
13654         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13655                             rem)
13656                 n_patterns++;
13657         if (n_patterns > coalesce->n_patterns)
13658                 return -EINVAL;
13659
13660         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13661                                      GFP_KERNEL);
13662         if (!new_rule->patterns)
13663                 return -ENOMEM;
13664
13665         new_rule->n_patterns = n_patterns;
13666         i = 0;
13667
13668         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13669                             rem) {
13670                 u8 *mask_pat;
13671
13672                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13673                                                   pat,
13674                                                   nl80211_packet_pattern_policy,
13675                                                   NULL);
13676                 if (err)
13677                         return err;
13678
13679                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13680                     !pat_tb[NL80211_PKTPAT_PATTERN])
13681                         return -EINVAL;
13682                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13683                 mask_len = DIV_ROUND_UP(pat_len, 8);
13684                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13685                         return -EINVAL;
13686                 if (pat_len > coalesce->pattern_max_len ||
13687                     pat_len < coalesce->pattern_min_len)
13688                         return -EINVAL;
13689
13690                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13691                         pkt_offset = 0;
13692                 else
13693                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13694                 if (pkt_offset > coalesce->max_pkt_offset)
13695                         return -EINVAL;
13696                 new_rule->patterns[i].pkt_offset = pkt_offset;
13697
13698                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13699                 if (!mask_pat)
13700                         return -ENOMEM;
13701
13702                 new_rule->patterns[i].mask = mask_pat;
13703                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13704                        mask_len);
13705
13706                 mask_pat += mask_len;
13707                 new_rule->patterns[i].pattern = mask_pat;
13708                 new_rule->patterns[i].pattern_len = pat_len;
13709                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13710                        pat_len);
13711                 i++;
13712         }
13713
13714         return 0;
13715 }
13716
13717 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13718 {
13719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13720         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13721         struct cfg80211_coalesce new_coalesce = {};
13722         struct cfg80211_coalesce *n_coalesce;
13723         int err, rem_rule, n_rules = 0, i, j;
13724         struct nlattr *rule;
13725         struct cfg80211_coalesce_rules *tmp_rule;
13726
13727         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13728                 return -EOPNOTSUPP;
13729
13730         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13731                 cfg80211_rdev_free_coalesce(rdev);
13732                 rdev_set_coalesce(rdev, NULL);
13733                 return 0;
13734         }
13735
13736         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13737                             rem_rule)
13738                 n_rules++;
13739         if (n_rules > coalesce->n_rules)
13740                 return -EINVAL;
13741
13742         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13743                                      GFP_KERNEL);
13744         if (!new_coalesce.rules)
13745                 return -ENOMEM;
13746
13747         new_coalesce.n_rules = n_rules;
13748         i = 0;
13749
13750         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13751                             rem_rule) {
13752                 err = nl80211_parse_coalesce_rule(rdev, rule,
13753                                                   &new_coalesce.rules[i]);
13754                 if (err)
13755                         goto error;
13756
13757                 i++;
13758         }
13759
13760         err = rdev_set_coalesce(rdev, &new_coalesce);
13761         if (err)
13762                 goto error;
13763
13764         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13765         if (!n_coalesce) {
13766                 err = -ENOMEM;
13767                 goto error;
13768         }
13769         cfg80211_rdev_free_coalesce(rdev);
13770         rdev->coalesce = n_coalesce;
13771
13772         return 0;
13773 error:
13774         for (i = 0; i < new_coalesce.n_rules; i++) {
13775                 tmp_rule = &new_coalesce.rules[i];
13776                 for (j = 0; j < tmp_rule->n_patterns; j++)
13777                         kfree(tmp_rule->patterns[j].mask);
13778                 kfree(tmp_rule->patterns);
13779         }
13780         kfree(new_coalesce.rules);
13781
13782         return err;
13783 }
13784
13785 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
13786 {
13787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13788         struct net_device *dev = info->user_ptr[1];
13789         struct wireless_dev *wdev = dev->ieee80211_ptr;
13790         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
13791         struct cfg80211_gtk_rekey_data rekey_data = {};
13792         int err;
13793
13794         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
13795                 return -EINVAL;
13796
13797         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
13798                                           info->attrs[NL80211_ATTR_REKEY_DATA],
13799                                           nl80211_rekey_policy, info->extack);
13800         if (err)
13801                 return err;
13802
13803         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
13804             !tb[NL80211_REKEY_DATA_KCK])
13805                 return -EINVAL;
13806         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
13807             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13808               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
13809                 return -ERANGE;
13810         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
13811             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13812               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
13813                 return -ERANGE;
13814
13815         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
13816         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
13817         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
13818         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
13819         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
13820         if (tb[NL80211_REKEY_DATA_AKM])
13821                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
13822
13823         wdev_lock(wdev);
13824         if (!wdev->connected) {
13825                 err = -ENOTCONN;
13826                 goto out;
13827         }
13828
13829         if (!rdev->ops->set_rekey_data) {
13830                 err = -EOPNOTSUPP;
13831                 goto out;
13832         }
13833
13834         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
13835  out:
13836         wdev_unlock(wdev);
13837         return err;
13838 }
13839
13840 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
13841                                              struct genl_info *info)
13842 {
13843         struct net_device *dev = info->user_ptr[1];
13844         struct wireless_dev *wdev = dev->ieee80211_ptr;
13845
13846         if (wdev->iftype != NL80211_IFTYPE_AP &&
13847             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13848                 return -EINVAL;
13849
13850         if (wdev->ap_unexpected_nlportid)
13851                 return -EBUSY;
13852
13853         wdev->ap_unexpected_nlportid = info->snd_portid;
13854         return 0;
13855 }
13856
13857 static int nl80211_probe_client(struct sk_buff *skb,
13858                                 struct genl_info *info)
13859 {
13860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13861         struct net_device *dev = info->user_ptr[1];
13862         struct wireless_dev *wdev = dev->ieee80211_ptr;
13863         struct sk_buff *msg;
13864         void *hdr;
13865         const u8 *addr;
13866         u64 cookie;
13867         int err;
13868
13869         if (wdev->iftype != NL80211_IFTYPE_AP &&
13870             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13871                 return -EOPNOTSUPP;
13872
13873         if (!info->attrs[NL80211_ATTR_MAC])
13874                 return -EINVAL;
13875
13876         if (!rdev->ops->probe_client)
13877                 return -EOPNOTSUPP;
13878
13879         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13880         if (!msg)
13881                 return -ENOMEM;
13882
13883         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13884                              NL80211_CMD_PROBE_CLIENT);
13885         if (!hdr) {
13886                 err = -ENOBUFS;
13887                 goto free_msg;
13888         }
13889
13890         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13891
13892         err = rdev_probe_client(rdev, dev, addr, &cookie);
13893         if (err)
13894                 goto free_msg;
13895
13896         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13897                               NL80211_ATTR_PAD))
13898                 goto nla_put_failure;
13899
13900         genlmsg_end(msg, hdr);
13901
13902         return genlmsg_reply(msg, info);
13903
13904  nla_put_failure:
13905         err = -ENOBUFS;
13906  free_msg:
13907         nlmsg_free(msg);
13908         return err;
13909 }
13910
13911 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13912 {
13913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13914         struct cfg80211_beacon_registration *reg, *nreg;
13915         int rv;
13916
13917         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13918                 return -EOPNOTSUPP;
13919
13920         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13921         if (!nreg)
13922                 return -ENOMEM;
13923
13924         /* First, check if already registered. */
13925         spin_lock_bh(&rdev->beacon_registrations_lock);
13926         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13927                 if (reg->nlportid == info->snd_portid) {
13928                         rv = -EALREADY;
13929                         goto out_err;
13930                 }
13931         }
13932         /* Add it to the list */
13933         nreg->nlportid = info->snd_portid;
13934         list_add(&nreg->list, &rdev->beacon_registrations);
13935
13936         spin_unlock_bh(&rdev->beacon_registrations_lock);
13937
13938         return 0;
13939 out_err:
13940         spin_unlock_bh(&rdev->beacon_registrations_lock);
13941         kfree(nreg);
13942         return rv;
13943 }
13944
13945 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13946 {
13947         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13948         struct wireless_dev *wdev = info->user_ptr[1];
13949         int err;
13950
13951         if (!rdev->ops->start_p2p_device)
13952                 return -EOPNOTSUPP;
13953
13954         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13955                 return -EOPNOTSUPP;
13956
13957         if (wdev_running(wdev))
13958                 return 0;
13959
13960         if (rfkill_blocked(rdev->wiphy.rfkill))
13961                 return -ERFKILL;
13962
13963         err = rdev_start_p2p_device(rdev, wdev);
13964         if (err)
13965                 return err;
13966
13967         wdev->is_running = true;
13968         rdev->opencount++;
13969
13970         return 0;
13971 }
13972
13973 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13974 {
13975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13976         struct wireless_dev *wdev = info->user_ptr[1];
13977
13978         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13979                 return -EOPNOTSUPP;
13980
13981         if (!rdev->ops->stop_p2p_device)
13982                 return -EOPNOTSUPP;
13983
13984         cfg80211_stop_p2p_device(rdev, wdev);
13985
13986         return 0;
13987 }
13988
13989 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13990 {
13991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13992         struct wireless_dev *wdev = info->user_ptr[1];
13993         struct cfg80211_nan_conf conf = {};
13994         int err;
13995
13996         if (wdev->iftype != NL80211_IFTYPE_NAN)
13997                 return -EOPNOTSUPP;
13998
13999         if (wdev_running(wdev))
14000                 return -EEXIST;
14001
14002         if (rfkill_blocked(rdev->wiphy.rfkill))
14003                 return -ERFKILL;
14004
14005         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14006                 return -EINVAL;
14007
14008         conf.master_pref =
14009                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14010
14011         if (info->attrs[NL80211_ATTR_BANDS]) {
14012                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14013
14014                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14015                         return -EOPNOTSUPP;
14016
14017                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14018                         return -EINVAL;
14019
14020                 conf.bands = bands;
14021         }
14022
14023         err = rdev_start_nan(rdev, wdev, &conf);
14024         if (err)
14025                 return err;
14026
14027         wdev->is_running = true;
14028         rdev->opencount++;
14029
14030         return 0;
14031 }
14032
14033 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14034 {
14035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14036         struct wireless_dev *wdev = info->user_ptr[1];
14037
14038         if (wdev->iftype != NL80211_IFTYPE_NAN)
14039                 return -EOPNOTSUPP;
14040
14041         cfg80211_stop_nan(rdev, wdev);
14042
14043         return 0;
14044 }
14045
14046 static int validate_nan_filter(struct nlattr *filter_attr)
14047 {
14048         struct nlattr *attr;
14049         int len = 0, n_entries = 0, rem;
14050
14051         nla_for_each_nested(attr, filter_attr, rem) {
14052                 len += nla_len(attr);
14053                 n_entries++;
14054         }
14055
14056         if (len >= U8_MAX)
14057                 return -EINVAL;
14058
14059         return n_entries;
14060 }
14061
14062 static int handle_nan_filter(struct nlattr *attr_filter,
14063                              struct cfg80211_nan_func *func,
14064                              bool tx)
14065 {
14066         struct nlattr *attr;
14067         int n_entries, rem, i;
14068         struct cfg80211_nan_func_filter *filter;
14069
14070         n_entries = validate_nan_filter(attr_filter);
14071         if (n_entries < 0)
14072                 return n_entries;
14073
14074         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14075
14076         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14077         if (!filter)
14078                 return -ENOMEM;
14079
14080         i = 0;
14081         nla_for_each_nested(attr, attr_filter, rem) {
14082                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14083                 if (!filter[i].filter)
14084                         goto err;
14085
14086                 filter[i].len = nla_len(attr);
14087                 i++;
14088         }
14089         if (tx) {
14090                 func->num_tx_filters = n_entries;
14091                 func->tx_filters = filter;
14092         } else {
14093                 func->num_rx_filters = n_entries;
14094                 func->rx_filters = filter;
14095         }
14096
14097         return 0;
14098
14099 err:
14100         i = 0;
14101         nla_for_each_nested(attr, attr_filter, rem) {
14102                 kfree(filter[i].filter);
14103                 i++;
14104         }
14105         kfree(filter);
14106         return -ENOMEM;
14107 }
14108
14109 static int nl80211_nan_add_func(struct sk_buff *skb,
14110                                 struct genl_info *info)
14111 {
14112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14113         struct wireless_dev *wdev = info->user_ptr[1];
14114         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14115         struct cfg80211_nan_func *func;
14116         struct sk_buff *msg = NULL;
14117         void *hdr = NULL;
14118         int err = 0;
14119
14120         if (wdev->iftype != NL80211_IFTYPE_NAN)
14121                 return -EOPNOTSUPP;
14122
14123         if (!wdev_running(wdev))
14124                 return -ENOTCONN;
14125
14126         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14127                 return -EINVAL;
14128
14129         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14130                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14131                                           nl80211_nan_func_policy,
14132                                           info->extack);
14133         if (err)
14134                 return err;
14135
14136         func = kzalloc(sizeof(*func), GFP_KERNEL);
14137         if (!func)
14138                 return -ENOMEM;
14139
14140         func->cookie = cfg80211_assign_cookie(rdev);
14141
14142         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14143                 err = -EINVAL;
14144                 goto out;
14145         }
14146
14147
14148         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14149
14150         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14151                 err = -EINVAL;
14152                 goto out;
14153         }
14154
14155         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14156                sizeof(func->service_id));
14157
14158         func->close_range =
14159                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14160
14161         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14162                 func->serv_spec_info_len =
14163                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14164                 func->serv_spec_info =
14165                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14166                                 func->serv_spec_info_len,
14167                                 GFP_KERNEL);
14168                 if (!func->serv_spec_info) {
14169                         err = -ENOMEM;
14170                         goto out;
14171                 }
14172         }
14173
14174         if (tb[NL80211_NAN_FUNC_TTL])
14175                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14176
14177         switch (func->type) {
14178         case NL80211_NAN_FUNC_PUBLISH:
14179                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14180                         err = -EINVAL;
14181                         goto out;
14182                 }
14183
14184                 func->publish_type =
14185                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14186                 func->publish_bcast =
14187                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14188
14189                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14190                         func->publish_bcast) {
14191                         err = -EINVAL;
14192                         goto out;
14193                 }
14194                 break;
14195         case NL80211_NAN_FUNC_SUBSCRIBE:
14196                 func->subscribe_active =
14197                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14198                 break;
14199         case NL80211_NAN_FUNC_FOLLOW_UP:
14200                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14201                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14202                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14203                         err = -EINVAL;
14204                         goto out;
14205                 }
14206
14207                 func->followup_id =
14208                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14209                 func->followup_reqid =
14210                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14211                 memcpy(func->followup_dest.addr,
14212                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14213                        sizeof(func->followup_dest.addr));
14214                 if (func->ttl) {
14215                         err = -EINVAL;
14216                         goto out;
14217                 }
14218                 break;
14219         default:
14220                 err = -EINVAL;
14221                 goto out;
14222         }
14223
14224         if (tb[NL80211_NAN_FUNC_SRF]) {
14225                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14226
14227                 err = nla_parse_nested_deprecated(srf_tb,
14228                                                   NL80211_NAN_SRF_ATTR_MAX,
14229                                                   tb[NL80211_NAN_FUNC_SRF],
14230                                                   nl80211_nan_srf_policy,
14231                                                   info->extack);
14232                 if (err)
14233                         goto out;
14234
14235                 func->srf_include =
14236                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14237
14238                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14239                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14240                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14241                                 err = -EINVAL;
14242                                 goto out;
14243                         }
14244
14245                         func->srf_bf_len =
14246                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14247                         func->srf_bf =
14248                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14249                                         func->srf_bf_len, GFP_KERNEL);
14250                         if (!func->srf_bf) {
14251                                 err = -ENOMEM;
14252                                 goto out;
14253                         }
14254
14255                         func->srf_bf_idx =
14256                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14257                 } else {
14258                         struct nlattr *attr, *mac_attr =
14259                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14260                         int n_entries, rem, i = 0;
14261
14262                         if (!mac_attr) {
14263                                 err = -EINVAL;
14264                                 goto out;
14265                         }
14266
14267                         n_entries = validate_acl_mac_addrs(mac_attr);
14268                         if (n_entries <= 0) {
14269                                 err = -EINVAL;
14270                                 goto out;
14271                         }
14272
14273                         func->srf_num_macs = n_entries;
14274                         func->srf_macs =
14275                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14276                                         GFP_KERNEL);
14277                         if (!func->srf_macs) {
14278                                 err = -ENOMEM;
14279                                 goto out;
14280                         }
14281
14282                         nla_for_each_nested(attr, mac_attr, rem)
14283                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14284                                        sizeof(*func->srf_macs));
14285                 }
14286         }
14287
14288         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14289                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14290                                         func, true);
14291                 if (err)
14292                         goto out;
14293         }
14294
14295         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14296                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14297                                         func, false);
14298                 if (err)
14299                         goto out;
14300         }
14301
14302         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14303         if (!msg) {
14304                 err = -ENOMEM;
14305                 goto out;
14306         }
14307
14308         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14309                              NL80211_CMD_ADD_NAN_FUNCTION);
14310         /* This can't really happen - we just allocated 4KB */
14311         if (WARN_ON(!hdr)) {
14312                 err = -ENOMEM;
14313                 goto out;
14314         }
14315
14316         err = rdev_add_nan_func(rdev, wdev, func);
14317 out:
14318         if (err < 0) {
14319                 cfg80211_free_nan_func(func);
14320                 nlmsg_free(msg);
14321                 return err;
14322         }
14323
14324         /* propagate the instance id and cookie to userspace  */
14325         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14326                               NL80211_ATTR_PAD))
14327                 goto nla_put_failure;
14328
14329         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14330         if (!func_attr)
14331                 goto nla_put_failure;
14332
14333         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14334                        func->instance_id))
14335                 goto nla_put_failure;
14336
14337         nla_nest_end(msg, func_attr);
14338
14339         genlmsg_end(msg, hdr);
14340         return genlmsg_reply(msg, info);
14341
14342 nla_put_failure:
14343         nlmsg_free(msg);
14344         return -ENOBUFS;
14345 }
14346
14347 static int nl80211_nan_del_func(struct sk_buff *skb,
14348                                struct genl_info *info)
14349 {
14350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14351         struct wireless_dev *wdev = info->user_ptr[1];
14352         u64 cookie;
14353
14354         if (wdev->iftype != NL80211_IFTYPE_NAN)
14355                 return -EOPNOTSUPP;
14356
14357         if (!wdev_running(wdev))
14358                 return -ENOTCONN;
14359
14360         if (!info->attrs[NL80211_ATTR_COOKIE])
14361                 return -EINVAL;
14362
14363         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14364
14365         rdev_del_nan_func(rdev, wdev, cookie);
14366
14367         return 0;
14368 }
14369
14370 static int nl80211_nan_change_config(struct sk_buff *skb,
14371                                      struct genl_info *info)
14372 {
14373         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14374         struct wireless_dev *wdev = info->user_ptr[1];
14375         struct cfg80211_nan_conf conf = {};
14376         u32 changed = 0;
14377
14378         if (wdev->iftype != NL80211_IFTYPE_NAN)
14379                 return -EOPNOTSUPP;
14380
14381         if (!wdev_running(wdev))
14382                 return -ENOTCONN;
14383
14384         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14385                 conf.master_pref =
14386                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14387                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14388                         return -EINVAL;
14389
14390                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14391         }
14392
14393         if (info->attrs[NL80211_ATTR_BANDS]) {
14394                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14395
14396                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14397                         return -EOPNOTSUPP;
14398
14399                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14400                         return -EINVAL;
14401
14402                 conf.bands = bands;
14403                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14404         }
14405
14406         if (!changed)
14407                 return -EINVAL;
14408
14409         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14410 }
14411
14412 void cfg80211_nan_match(struct wireless_dev *wdev,
14413                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14414 {
14415         struct wiphy *wiphy = wdev->wiphy;
14416         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14417         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14418         struct sk_buff *msg;
14419         void *hdr;
14420
14421         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14422                 return;
14423
14424         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14425         if (!msg)
14426                 return;
14427
14428         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14429         if (!hdr) {
14430                 nlmsg_free(msg);
14431                 return;
14432         }
14433
14434         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14435             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14436                                          wdev->netdev->ifindex)) ||
14437             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14438                               NL80211_ATTR_PAD))
14439                 goto nla_put_failure;
14440
14441         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14442                               NL80211_ATTR_PAD) ||
14443             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14444                 goto nla_put_failure;
14445
14446         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14447         if (!match_attr)
14448                 goto nla_put_failure;
14449
14450         local_func_attr = nla_nest_start_noflag(msg,
14451                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14452         if (!local_func_attr)
14453                 goto nla_put_failure;
14454
14455         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14456                 goto nla_put_failure;
14457
14458         nla_nest_end(msg, local_func_attr);
14459
14460         peer_func_attr = nla_nest_start_noflag(msg,
14461                                                NL80211_NAN_MATCH_FUNC_PEER);
14462         if (!peer_func_attr)
14463                 goto nla_put_failure;
14464
14465         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14466             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14467                 goto nla_put_failure;
14468
14469         if (match->info && match->info_len &&
14470             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14471                     match->info))
14472                 goto nla_put_failure;
14473
14474         nla_nest_end(msg, peer_func_attr);
14475         nla_nest_end(msg, match_attr);
14476         genlmsg_end(msg, hdr);
14477
14478         if (!wdev->owner_nlportid)
14479                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14480                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14481         else
14482                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14483                                 wdev->owner_nlportid);
14484
14485         return;
14486
14487 nla_put_failure:
14488         nlmsg_free(msg);
14489 }
14490 EXPORT_SYMBOL(cfg80211_nan_match);
14491
14492 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14493                                   u8 inst_id,
14494                                   enum nl80211_nan_func_term_reason reason,
14495                                   u64 cookie, gfp_t gfp)
14496 {
14497         struct wiphy *wiphy = wdev->wiphy;
14498         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14499         struct sk_buff *msg;
14500         struct nlattr *func_attr;
14501         void *hdr;
14502
14503         if (WARN_ON(!inst_id))
14504                 return;
14505
14506         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14507         if (!msg)
14508                 return;
14509
14510         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14511         if (!hdr) {
14512                 nlmsg_free(msg);
14513                 return;
14514         }
14515
14516         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14517             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14518                                          wdev->netdev->ifindex)) ||
14519             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14520                               NL80211_ATTR_PAD))
14521                 goto nla_put_failure;
14522
14523         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14524                               NL80211_ATTR_PAD))
14525                 goto nla_put_failure;
14526
14527         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14528         if (!func_attr)
14529                 goto nla_put_failure;
14530
14531         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14532             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14533                 goto nla_put_failure;
14534
14535         nla_nest_end(msg, func_attr);
14536         genlmsg_end(msg, hdr);
14537
14538         if (!wdev->owner_nlportid)
14539                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14540                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14541         else
14542                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14543                                 wdev->owner_nlportid);
14544
14545         return;
14546
14547 nla_put_failure:
14548         nlmsg_free(msg);
14549 }
14550 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14551
14552 static int nl80211_get_protocol_features(struct sk_buff *skb,
14553                                          struct genl_info *info)
14554 {
14555         void *hdr;
14556         struct sk_buff *msg;
14557
14558         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14559         if (!msg)
14560                 return -ENOMEM;
14561
14562         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14563                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14564         if (!hdr)
14565                 goto nla_put_failure;
14566
14567         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14568                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14569                 goto nla_put_failure;
14570
14571         genlmsg_end(msg, hdr);
14572         return genlmsg_reply(msg, info);
14573
14574  nla_put_failure:
14575         kfree_skb(msg);
14576         return -ENOBUFS;
14577 }
14578
14579 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14580 {
14581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14582         struct cfg80211_update_ft_ies_params ft_params;
14583         struct net_device *dev = info->user_ptr[1];
14584
14585         if (!rdev->ops->update_ft_ies)
14586                 return -EOPNOTSUPP;
14587
14588         if (!info->attrs[NL80211_ATTR_MDID] ||
14589             !info->attrs[NL80211_ATTR_IE])
14590                 return -EINVAL;
14591
14592         memset(&ft_params, 0, sizeof(ft_params));
14593         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14594         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14595         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14596
14597         return rdev_update_ft_ies(rdev, dev, &ft_params);
14598 }
14599
14600 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14601                                        struct genl_info *info)
14602 {
14603         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14604         struct wireless_dev *wdev = info->user_ptr[1];
14605         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14606         u16 duration;
14607         int ret;
14608
14609         if (!rdev->ops->crit_proto_start)
14610                 return -EOPNOTSUPP;
14611
14612         if (WARN_ON(!rdev->ops->crit_proto_stop))
14613                 return -EINVAL;
14614
14615         if (rdev->crit_proto_nlportid)
14616                 return -EBUSY;
14617
14618         /* determine protocol if provided */
14619         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14620                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14621
14622         if (proto >= NUM_NL80211_CRIT_PROTO)
14623                 return -EINVAL;
14624
14625         /* timeout must be provided */
14626         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14627                 return -EINVAL;
14628
14629         duration =
14630                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14631
14632         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14633         if (!ret)
14634                 rdev->crit_proto_nlportid = info->snd_portid;
14635
14636         return ret;
14637 }
14638
14639 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14640                                       struct genl_info *info)
14641 {
14642         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14643         struct wireless_dev *wdev = info->user_ptr[1];
14644
14645         if (!rdev->ops->crit_proto_stop)
14646                 return -EOPNOTSUPP;
14647
14648         if (rdev->crit_proto_nlportid) {
14649                 rdev->crit_proto_nlportid = 0;
14650                 rdev_crit_proto_stop(rdev, wdev);
14651         }
14652         return 0;
14653 }
14654
14655 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14656                                        struct nlattr *attr,
14657                                        struct netlink_ext_ack *extack)
14658 {
14659         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14660                 if (attr->nla_type & NLA_F_NESTED) {
14661                         NL_SET_ERR_MSG_ATTR(extack, attr,
14662                                             "unexpected nested data");
14663                         return -EINVAL;
14664                 }
14665
14666                 return 0;
14667         }
14668
14669         if (!(attr->nla_type & NLA_F_NESTED)) {
14670                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14671                 return -EINVAL;
14672         }
14673
14674         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14675 }
14676
14677 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14678 {
14679         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14680         struct wireless_dev *wdev =
14681                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14682                                            info->attrs);
14683         int i, err;
14684         u32 vid, subcmd;
14685
14686         if (!rdev->wiphy.vendor_commands)
14687                 return -EOPNOTSUPP;
14688
14689         if (IS_ERR(wdev)) {
14690                 err = PTR_ERR(wdev);
14691                 if (err != -EINVAL)
14692                         return err;
14693                 wdev = NULL;
14694         } else if (wdev->wiphy != &rdev->wiphy) {
14695                 return -EINVAL;
14696         }
14697
14698         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14699             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14700                 return -EINVAL;
14701
14702         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14703         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14704         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14705                 const struct wiphy_vendor_command *vcmd;
14706                 void *data = NULL;
14707                 int len = 0;
14708
14709                 vcmd = &rdev->wiphy.vendor_commands[i];
14710
14711                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14712                         continue;
14713
14714                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14715                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14716                         if (!wdev)
14717                                 return -EINVAL;
14718                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14719                             !wdev->netdev)
14720                                 return -EINVAL;
14721
14722                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14723                                 if (!wdev_running(wdev))
14724                                         return -ENETDOWN;
14725                         }
14726                 } else {
14727                         wdev = NULL;
14728                 }
14729
14730                 if (!vcmd->doit)
14731                         return -EOPNOTSUPP;
14732
14733                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14734                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14735                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14736
14737                         err = nl80211_vendor_check_policy(vcmd,
14738                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14739                                         info->extack);
14740                         if (err)
14741                                 return err;
14742                 }
14743
14744                 rdev->cur_cmd_info = info;
14745                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14746                 rdev->cur_cmd_info = NULL;
14747                 return err;
14748         }
14749
14750         return -EOPNOTSUPP;
14751 }
14752
14753 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14754                                        struct netlink_callback *cb,
14755                                        struct cfg80211_registered_device **rdev,
14756                                        struct wireless_dev **wdev)
14757 {
14758         struct nlattr **attrbuf;
14759         u32 vid, subcmd;
14760         unsigned int i;
14761         int vcmd_idx = -1;
14762         int err;
14763         void *data = NULL;
14764         unsigned int data_len = 0;
14765
14766         if (cb->args[0]) {
14767                 /* subtract the 1 again here */
14768                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
14769                 struct wireless_dev *tmp;
14770
14771                 if (!wiphy)
14772                         return -ENODEV;
14773                 *rdev = wiphy_to_rdev(wiphy);
14774                 *wdev = NULL;
14775
14776                 if (cb->args[1]) {
14777                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
14778                                 if (tmp->identifier == cb->args[1] - 1) {
14779                                         *wdev = tmp;
14780                                         break;
14781                                 }
14782                         }
14783                 }
14784
14785                 /* keep rtnl locked in successful case */
14786                 return 0;
14787         }
14788
14789         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
14790         if (!attrbuf)
14791                 return -ENOMEM;
14792
14793         err = nlmsg_parse_deprecated(cb->nlh,
14794                                      GENL_HDRLEN + nl80211_fam.hdrsize,
14795                                      attrbuf, nl80211_fam.maxattr,
14796                                      nl80211_policy, NULL);
14797         if (err)
14798                 goto out;
14799
14800         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
14801             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
14802                 err = -EINVAL;
14803                 goto out;
14804         }
14805
14806         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
14807         if (IS_ERR(*wdev))
14808                 *wdev = NULL;
14809
14810         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
14811         if (IS_ERR(*rdev)) {
14812                 err = PTR_ERR(*rdev);
14813                 goto out;
14814         }
14815
14816         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
14817         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
14818
14819         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
14820                 const struct wiphy_vendor_command *vcmd;
14821
14822                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
14823
14824                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14825                         continue;
14826
14827                 if (!vcmd->dumpit) {
14828                         err = -EOPNOTSUPP;
14829                         goto out;
14830                 }
14831
14832                 vcmd_idx = i;
14833                 break;
14834         }
14835
14836         if (vcmd_idx < 0) {
14837                 err = -EOPNOTSUPP;
14838                 goto out;
14839         }
14840
14841         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
14842                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14843                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14844
14845                 err = nl80211_vendor_check_policy(
14846                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
14847                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
14848                                 cb->extack);
14849                 if (err)
14850                         goto out;
14851         }
14852
14853         /* 0 is the first index - add 1 to parse only once */
14854         cb->args[0] = (*rdev)->wiphy_idx + 1;
14855         /* add 1 to know if it was NULL */
14856         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
14857         cb->args[2] = vcmd_idx;
14858         cb->args[3] = (unsigned long)data;
14859         cb->args[4] = data_len;
14860
14861         /* keep rtnl locked in successful case */
14862         err = 0;
14863 out:
14864         kfree(attrbuf);
14865         return err;
14866 }
14867
14868 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
14869                                    struct netlink_callback *cb)
14870 {
14871         struct cfg80211_registered_device *rdev;
14872         struct wireless_dev *wdev;
14873         unsigned int vcmd_idx;
14874         const struct wiphy_vendor_command *vcmd;
14875         void *data;
14876         int data_len;
14877         int err;
14878         struct nlattr *vendor_data;
14879
14880         rtnl_lock();
14881         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
14882         if (err)
14883                 goto out;
14884
14885         vcmd_idx = cb->args[2];
14886         data = (void *)cb->args[3];
14887         data_len = cb->args[4];
14888         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14889
14890         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14891                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14892                 if (!wdev) {
14893                         err = -EINVAL;
14894                         goto out;
14895                 }
14896                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14897                     !wdev->netdev) {
14898                         err = -EINVAL;
14899                         goto out;
14900                 }
14901
14902                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14903                         if (!wdev_running(wdev)) {
14904                                 err = -ENETDOWN;
14905                                 goto out;
14906                         }
14907                 }
14908         }
14909
14910         while (1) {
14911                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
14912                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
14913                                            NL80211_CMD_VENDOR);
14914                 if (!hdr)
14915                         break;
14916
14917                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14918                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
14919                                                wdev_id(wdev),
14920                                                NL80211_ATTR_PAD))) {
14921                         genlmsg_cancel(skb, hdr);
14922                         break;
14923                 }
14924
14925                 vendor_data = nla_nest_start_noflag(skb,
14926                                                     NL80211_ATTR_VENDOR_DATA);
14927                 if (!vendor_data) {
14928                         genlmsg_cancel(skb, hdr);
14929                         break;
14930                 }
14931
14932                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14933                                    (unsigned long *)&cb->args[5]);
14934                 nla_nest_end(skb, vendor_data);
14935
14936                 if (err == -ENOBUFS || err == -ENOENT) {
14937                         genlmsg_cancel(skb, hdr);
14938                         break;
14939                 } else if (err <= 0) {
14940                         genlmsg_cancel(skb, hdr);
14941                         goto out;
14942                 }
14943
14944                 genlmsg_end(skb, hdr);
14945         }
14946
14947         err = skb->len;
14948  out:
14949         rtnl_unlock();
14950         return err;
14951 }
14952
14953 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14954                                            enum nl80211_commands cmd,
14955                                            enum nl80211_attrs attr,
14956                                            int approxlen)
14957 {
14958         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14959
14960         if (WARN_ON(!rdev->cur_cmd_info))
14961                 return NULL;
14962
14963         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14964                                            rdev->cur_cmd_info->snd_portid,
14965                                            rdev->cur_cmd_info->snd_seq,
14966                                            cmd, attr, NULL, GFP_KERNEL);
14967 }
14968 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14969
14970 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14971 {
14972         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14973         void *hdr = ((void **)skb->cb)[1];
14974         struct nlattr *data = ((void **)skb->cb)[2];
14975
14976         /* clear CB data for netlink core to own from now on */
14977         memset(skb->cb, 0, sizeof(skb->cb));
14978
14979         if (WARN_ON(!rdev->cur_cmd_info)) {
14980                 kfree_skb(skb);
14981                 return -EINVAL;
14982         }
14983
14984         nla_nest_end(skb, data);
14985         genlmsg_end(skb, hdr);
14986         return genlmsg_reply(skb, rdev->cur_cmd_info);
14987 }
14988 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14989
14990 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14991 {
14992         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14993
14994         if (WARN_ON(!rdev->cur_cmd_info))
14995                 return 0;
14996
14997         return rdev->cur_cmd_info->snd_portid;
14998 }
14999 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15000
15001 static int nl80211_set_qos_map(struct sk_buff *skb,
15002                                struct genl_info *info)
15003 {
15004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15005         struct cfg80211_qos_map *qos_map = NULL;
15006         struct net_device *dev = info->user_ptr[1];
15007         u8 *pos, len, num_des, des_len, des;
15008         int ret;
15009
15010         if (!rdev->ops->set_qos_map)
15011                 return -EOPNOTSUPP;
15012
15013         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15014                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15015                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15016
15017                 if (len % 2)
15018                         return -EINVAL;
15019
15020                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15021                 if (!qos_map)
15022                         return -ENOMEM;
15023
15024                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15025                 if (num_des) {
15026                         des_len = num_des *
15027                                 sizeof(struct cfg80211_dscp_exception);
15028                         memcpy(qos_map->dscp_exception, pos, des_len);
15029                         qos_map->num_des = num_des;
15030                         for (des = 0; des < num_des; des++) {
15031                                 if (qos_map->dscp_exception[des].up > 7) {
15032                                         kfree(qos_map);
15033                                         return -EINVAL;
15034                                 }
15035                         }
15036                         pos += des_len;
15037                 }
15038                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15039         }
15040
15041         wdev_lock(dev->ieee80211_ptr);
15042         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15043         if (!ret)
15044                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15045         wdev_unlock(dev->ieee80211_ptr);
15046
15047         kfree(qos_map);
15048         return ret;
15049 }
15050
15051 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15052 {
15053         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15054         struct net_device *dev = info->user_ptr[1];
15055         struct wireless_dev *wdev = dev->ieee80211_ptr;
15056         const u8 *peer;
15057         u8 tsid, up;
15058         u16 admitted_time = 0;
15059         int err;
15060
15061         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15062                 return -EOPNOTSUPP;
15063
15064         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15065             !info->attrs[NL80211_ATTR_USER_PRIO])
15066                 return -EINVAL;
15067
15068         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15069         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15070
15071         /* WMM uses TIDs 0-7 even for TSPEC */
15072         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15073                 /* TODO: handle 802.11 TSPEC/admission control
15074                  * need more attributes for that (e.g. BA session requirement);
15075                  * change the WMM adminssion test above to allow both then
15076                  */
15077                 return -EINVAL;
15078         }
15079
15080         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15081
15082         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15083                 admitted_time =
15084                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15085                 if (!admitted_time)
15086                         return -EINVAL;
15087         }
15088
15089         wdev_lock(wdev);
15090         switch (wdev->iftype) {
15091         case NL80211_IFTYPE_STATION:
15092         case NL80211_IFTYPE_P2P_CLIENT:
15093                 if (wdev->connected)
15094                         break;
15095                 err = -ENOTCONN;
15096                 goto out;
15097         default:
15098                 err = -EOPNOTSUPP;
15099                 goto out;
15100         }
15101
15102         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15103
15104  out:
15105         wdev_unlock(wdev);
15106         return err;
15107 }
15108
15109 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15110 {
15111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15112         struct net_device *dev = info->user_ptr[1];
15113         struct wireless_dev *wdev = dev->ieee80211_ptr;
15114         const u8 *peer;
15115         u8 tsid;
15116         int err;
15117
15118         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15119                 return -EINVAL;
15120
15121         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15122         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15123
15124         wdev_lock(wdev);
15125         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15126         wdev_unlock(wdev);
15127
15128         return err;
15129 }
15130
15131 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15132                                        struct genl_info *info)
15133 {
15134         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15135         struct net_device *dev = info->user_ptr[1];
15136         struct wireless_dev *wdev = dev->ieee80211_ptr;
15137         struct cfg80211_chan_def chandef = {};
15138         const u8 *addr;
15139         u8 oper_class;
15140         int err;
15141
15142         if (!rdev->ops->tdls_channel_switch ||
15143             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15144                 return -EOPNOTSUPP;
15145
15146         switch (dev->ieee80211_ptr->iftype) {
15147         case NL80211_IFTYPE_STATION:
15148         case NL80211_IFTYPE_P2P_CLIENT:
15149                 break;
15150         default:
15151                 return -EOPNOTSUPP;
15152         }
15153
15154         if (!info->attrs[NL80211_ATTR_MAC] ||
15155             !info->attrs[NL80211_ATTR_OPER_CLASS])
15156                 return -EINVAL;
15157
15158         err = nl80211_parse_chandef(rdev, info, &chandef);
15159         if (err)
15160                 return err;
15161
15162         /*
15163          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15164          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15165          * specification is not defined for them.
15166          */
15167         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15168             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15169             chandef.width != NL80211_CHAN_WIDTH_20)
15170                 return -EINVAL;
15171
15172         /* we will be active on the TDLS link */
15173         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15174                                            wdev->iftype))
15175                 return -EINVAL;
15176
15177         /* don't allow switching to DFS channels */
15178         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15179                 return -EINVAL;
15180
15181         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15182         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15183
15184         wdev_lock(wdev);
15185         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15186         wdev_unlock(wdev);
15187
15188         return err;
15189 }
15190
15191 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15192                                               struct genl_info *info)
15193 {
15194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15195         struct net_device *dev = info->user_ptr[1];
15196         struct wireless_dev *wdev = dev->ieee80211_ptr;
15197         const u8 *addr;
15198
15199         if (!rdev->ops->tdls_channel_switch ||
15200             !rdev->ops->tdls_cancel_channel_switch ||
15201             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15202                 return -EOPNOTSUPP;
15203
15204         switch (dev->ieee80211_ptr->iftype) {
15205         case NL80211_IFTYPE_STATION:
15206         case NL80211_IFTYPE_P2P_CLIENT:
15207                 break;
15208         default:
15209                 return -EOPNOTSUPP;
15210         }
15211
15212         if (!info->attrs[NL80211_ATTR_MAC])
15213                 return -EINVAL;
15214
15215         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15216
15217         wdev_lock(wdev);
15218         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15219         wdev_unlock(wdev);
15220
15221         return 0;
15222 }
15223
15224 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15225                                             struct genl_info *info)
15226 {
15227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15228         struct net_device *dev = info->user_ptr[1];
15229         struct wireless_dev *wdev = dev->ieee80211_ptr;
15230         const struct nlattr *nla;
15231         bool enabled;
15232
15233         if (!rdev->ops->set_multicast_to_unicast)
15234                 return -EOPNOTSUPP;
15235
15236         if (wdev->iftype != NL80211_IFTYPE_AP &&
15237             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15238                 return -EOPNOTSUPP;
15239
15240         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15241         enabled = nla_get_flag(nla);
15242
15243         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15244 }
15245
15246 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15247 {
15248         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15249         struct net_device *dev = info->user_ptr[1];
15250         struct wireless_dev *wdev = dev->ieee80211_ptr;
15251         struct cfg80211_pmk_conf pmk_conf = {};
15252         int ret;
15253
15254         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15255             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15256                 return -EOPNOTSUPP;
15257
15258         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15259                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15260                 return -EOPNOTSUPP;
15261
15262         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15263                 return -EINVAL;
15264
15265         wdev_lock(wdev);
15266         if (!wdev->connected) {
15267                 ret = -ENOTCONN;
15268                 goto out;
15269         }
15270
15271         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15272         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15273                 ret = -EINVAL;
15274                 goto out;
15275         }
15276
15277         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15278         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15279         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15280             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15281                 ret = -EINVAL;
15282                 goto out;
15283         }
15284
15285         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15286                 pmk_conf.pmk_r0_name =
15287                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15288
15289         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15290 out:
15291         wdev_unlock(wdev);
15292         return ret;
15293 }
15294
15295 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15296 {
15297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15298         struct net_device *dev = info->user_ptr[1];
15299         struct wireless_dev *wdev = dev->ieee80211_ptr;
15300         const u8 *aa;
15301         int ret;
15302
15303         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15304             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15305                 return -EOPNOTSUPP;
15306
15307         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15308                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15309                 return -EOPNOTSUPP;
15310
15311         if (!info->attrs[NL80211_ATTR_MAC])
15312                 return -EINVAL;
15313
15314         wdev_lock(wdev);
15315         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15316         ret = rdev_del_pmk(rdev, dev, aa);
15317         wdev_unlock(wdev);
15318
15319         return ret;
15320 }
15321
15322 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15323 {
15324         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15325         struct net_device *dev = info->user_ptr[1];
15326         struct cfg80211_external_auth_params params;
15327
15328         if (!rdev->ops->external_auth)
15329                 return -EOPNOTSUPP;
15330
15331         if (!info->attrs[NL80211_ATTR_SSID] &&
15332             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15333             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15334                 return -EINVAL;
15335
15336         if (!info->attrs[NL80211_ATTR_BSSID])
15337                 return -EINVAL;
15338
15339         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15340                 return -EINVAL;
15341
15342         memset(&params, 0, sizeof(params));
15343
15344         if (info->attrs[NL80211_ATTR_SSID]) {
15345                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15346                 if (params.ssid.ssid_len == 0)
15347                         return -EINVAL;
15348                 memcpy(params.ssid.ssid,
15349                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15350                        params.ssid.ssid_len);
15351         }
15352
15353         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15354                ETH_ALEN);
15355
15356         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15357
15358         if (info->attrs[NL80211_ATTR_PMKID])
15359                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15360
15361         return rdev_external_auth(rdev, dev, &params);
15362 }
15363
15364 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15365 {
15366         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15368         struct net_device *dev = info->user_ptr[1];
15369         struct wireless_dev *wdev = dev->ieee80211_ptr;
15370         const u8 *buf;
15371         size_t len;
15372         u8 *dest;
15373         u16 proto;
15374         bool noencrypt;
15375         u64 cookie = 0;
15376         int link_id;
15377         int err;
15378
15379         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15380                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15381                 return -EOPNOTSUPP;
15382
15383         if (!rdev->ops->tx_control_port)
15384                 return -EOPNOTSUPP;
15385
15386         if (!info->attrs[NL80211_ATTR_FRAME] ||
15387             !info->attrs[NL80211_ATTR_MAC] ||
15388             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15389                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15390                 return -EINVAL;
15391         }
15392
15393         wdev_lock(wdev);
15394
15395         switch (wdev->iftype) {
15396         case NL80211_IFTYPE_AP:
15397         case NL80211_IFTYPE_P2P_GO:
15398         case NL80211_IFTYPE_MESH_POINT:
15399                 break;
15400         case NL80211_IFTYPE_ADHOC:
15401                 if (wdev->u.ibss.current_bss)
15402                         break;
15403                 err = -ENOTCONN;
15404                 goto out;
15405         case NL80211_IFTYPE_STATION:
15406         case NL80211_IFTYPE_P2P_CLIENT:
15407                 if (wdev->connected)
15408                         break;
15409                 err = -ENOTCONN;
15410                 goto out;
15411         default:
15412                 err = -EOPNOTSUPP;
15413                 goto out;
15414         }
15415
15416         wdev_unlock(wdev);
15417
15418         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15419         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15420         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15421         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15422         noencrypt =
15423                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15424
15425         link_id = nl80211_link_id_or_invalid(info->attrs);
15426
15427         err = rdev_tx_control_port(rdev, dev, buf, len,
15428                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15429                                    dont_wait_for_ack ? NULL : &cookie);
15430         if (!err && !dont_wait_for_ack)
15431                 nl_set_extack_cookie_u64(info->extack, cookie);
15432         return err;
15433  out:
15434         wdev_unlock(wdev);
15435         return err;
15436 }
15437
15438 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15439                                            struct genl_info *info)
15440 {
15441         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15442         struct net_device *dev = info->user_ptr[1];
15443         struct wireless_dev *wdev = dev->ieee80211_ptr;
15444         struct cfg80211_ftm_responder_stats ftm_stats = {};
15445         unsigned int link_id = nl80211_link_id(info->attrs);
15446         struct sk_buff *msg;
15447         void *hdr;
15448         struct nlattr *ftm_stats_attr;
15449         int err;
15450
15451         if (wdev->iftype != NL80211_IFTYPE_AP ||
15452             !wdev->links[link_id].ap.beacon_interval)
15453                 return -EOPNOTSUPP;
15454
15455         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15456         if (err)
15457                 return err;
15458
15459         if (!ftm_stats.filled)
15460                 return -ENODATA;
15461
15462         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15463         if (!msg)
15464                 return -ENOMEM;
15465
15466         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15467                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15468         if (!hdr)
15469                 goto nla_put_failure;
15470
15471         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15472                 goto nla_put_failure;
15473
15474         ftm_stats_attr = nla_nest_start_noflag(msg,
15475                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15476         if (!ftm_stats_attr)
15477                 goto nla_put_failure;
15478
15479 #define SET_FTM(field, name, type)                                       \
15480         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15481             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15482                              ftm_stats.field))                           \
15483                 goto nla_put_failure; } while (0)
15484 #define SET_FTM_U64(field, name)                                         \
15485         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15486             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15487                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15488                 goto nla_put_failure; } while (0)
15489
15490         SET_FTM(success_num, SUCCESS_NUM, u32);
15491         SET_FTM(partial_num, PARTIAL_NUM, u32);
15492         SET_FTM(failed_num, FAILED_NUM, u32);
15493         SET_FTM(asap_num, ASAP_NUM, u32);
15494         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15495         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15496         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15497         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15498         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15499 #undef SET_FTM
15500
15501         nla_nest_end(msg, ftm_stats_attr);
15502
15503         genlmsg_end(msg, hdr);
15504         return genlmsg_reply(msg, info);
15505
15506 nla_put_failure:
15507         nlmsg_free(msg);
15508         return -ENOBUFS;
15509 }
15510
15511 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15512 {
15513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15514         struct cfg80211_update_owe_info owe_info;
15515         struct net_device *dev = info->user_ptr[1];
15516
15517         if (!rdev->ops->update_owe_info)
15518                 return -EOPNOTSUPP;
15519
15520         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15521             !info->attrs[NL80211_ATTR_MAC])
15522                 return -EINVAL;
15523
15524         memset(&owe_info, 0, sizeof(owe_info));
15525         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15526         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15527
15528         if (info->attrs[NL80211_ATTR_IE]) {
15529                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15530                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15531         }
15532
15533         return rdev_update_owe_info(rdev, dev, &owe_info);
15534 }
15535
15536 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15537 {
15538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15539         struct net_device *dev = info->user_ptr[1];
15540         struct wireless_dev *wdev = dev->ieee80211_ptr;
15541         struct station_info sinfo = {};
15542         const u8 *buf;
15543         size_t len;
15544         u8 *dest;
15545         int err;
15546
15547         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15548                 return -EOPNOTSUPP;
15549
15550         if (!info->attrs[NL80211_ATTR_MAC] ||
15551             !info->attrs[NL80211_ATTR_FRAME]) {
15552                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15553                 return -EINVAL;
15554         }
15555
15556         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15557                 return -EOPNOTSUPP;
15558
15559         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15560         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15561         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15562
15563         if (len < sizeof(struct ethhdr))
15564                 return -EINVAL;
15565
15566         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15567             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15568                 return -EINVAL;
15569
15570         err = rdev_get_station(rdev, dev, dest, &sinfo);
15571         if (err)
15572                 return err;
15573
15574         cfg80211_sinfo_release_content(&sinfo);
15575
15576         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15577 }
15578
15579 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15580                           struct nlattr *attrs[], struct net_device *dev,
15581                           struct cfg80211_tid_cfg *tid_conf,
15582                           struct genl_info *info, const u8 *peer,
15583                           unsigned int link_id)
15584 {
15585         struct netlink_ext_ack *extack = info->extack;
15586         u64 mask;
15587         int err;
15588
15589         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15590                 return -EINVAL;
15591
15592         tid_conf->config_override =
15593                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15594         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15595
15596         if (tid_conf->config_override) {
15597                 if (rdev->ops->reset_tid_config) {
15598                         err = rdev_reset_tid_config(rdev, dev, peer,
15599                                                     tid_conf->tids);
15600                         if (err)
15601                                 return err;
15602                 } else {
15603                         return -EINVAL;
15604                 }
15605         }
15606
15607         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15608                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15609                 tid_conf->noack =
15610                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15611         }
15612
15613         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15614                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15615                 tid_conf->retry_short =
15616                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15617
15618                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15619                         return -EINVAL;
15620         }
15621
15622         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15623                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15624                 tid_conf->retry_long =
15625                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15626
15627                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15628                         return -EINVAL;
15629         }
15630
15631         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15632                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15633                 tid_conf->ampdu =
15634                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15635         }
15636
15637         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15638                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15639                 tid_conf->rtscts =
15640                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15641         }
15642
15643         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15644                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15645                 tid_conf->amsdu =
15646                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15647         }
15648
15649         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15650                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15651
15652                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15653
15654                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15655                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15656                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15657                                                     &tid_conf->txrate_mask, dev,
15658                                                     true, link_id);
15659                         if (err)
15660                                 return err;
15661
15662                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15663                 }
15664                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15665         }
15666
15667         if (peer)
15668                 mask = rdev->wiphy.tid_config_support.peer;
15669         else
15670                 mask = rdev->wiphy.tid_config_support.vif;
15671
15672         if (tid_conf->mask & ~mask) {
15673                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15674                 return -ENOTSUPP;
15675         }
15676
15677         return 0;
15678 }
15679
15680 static int nl80211_set_tid_config(struct sk_buff *skb,
15681                                   struct genl_info *info)
15682 {
15683         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15684         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15685         unsigned int link_id = nl80211_link_id(info->attrs);
15686         struct net_device *dev = info->user_ptr[1];
15687         struct cfg80211_tid_config *tid_config;
15688         struct nlattr *tid;
15689         int conf_idx = 0, rem_conf;
15690         int ret = -EINVAL;
15691         u32 num_conf = 0;
15692
15693         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15694                 return -EINVAL;
15695
15696         if (!rdev->ops->set_tid_config)
15697                 return -EOPNOTSUPP;
15698
15699         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15700                             rem_conf)
15701                 num_conf++;
15702
15703         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15704                              GFP_KERNEL);
15705         if (!tid_config)
15706                 return -ENOMEM;
15707
15708         tid_config->n_tid_conf = num_conf;
15709
15710         if (info->attrs[NL80211_ATTR_MAC])
15711                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15712
15713         wdev_lock(dev->ieee80211_ptr);
15714
15715         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15716                             rem_conf) {
15717                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15718                                        tid, NULL, NULL);
15719
15720                 if (ret)
15721                         goto bad_tid_conf;
15722
15723                 ret = parse_tid_conf(rdev, attrs, dev,
15724                                      &tid_config->tid_conf[conf_idx],
15725                                      info, tid_config->peer, link_id);
15726                 if (ret)
15727                         goto bad_tid_conf;
15728
15729                 conf_idx++;
15730         }
15731
15732         ret = rdev_set_tid_config(rdev, dev, tid_config);
15733
15734 bad_tid_conf:
15735         kfree(tid_config);
15736         wdev_unlock(dev->ieee80211_ptr);
15737         return ret;
15738 }
15739
15740 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15741 {
15742         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15743         struct cfg80211_color_change_settings params = {};
15744         struct net_device *dev = info->user_ptr[1];
15745         struct wireless_dev *wdev = dev->ieee80211_ptr;
15746         struct nlattr **tb;
15747         u16 offset;
15748         int err;
15749
15750         if (!rdev->ops->color_change)
15751                 return -EOPNOTSUPP;
15752
15753         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15754                                      NL80211_EXT_FEATURE_BSS_COLOR))
15755                 return -EOPNOTSUPP;
15756
15757         if (wdev->iftype != NL80211_IFTYPE_AP)
15758                 return -EOPNOTSUPP;
15759
15760         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15761             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15762             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15763                 return -EINVAL;
15764
15765         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15766         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15767
15768         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next);
15769         if (err)
15770                 return err;
15771
15772         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15773         if (!tb)
15774                 return -ENOMEM;
15775
15776         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15777                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15778                                nl80211_policy, info->extack);
15779         if (err)
15780                 goto out;
15781
15782         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change);
15783         if (err)
15784                 goto out;
15785
15786         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15787                 err = -EINVAL;
15788                 goto out;
15789         }
15790
15791         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15792                 err = -EINVAL;
15793                 goto out;
15794         }
15795
15796         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15797         if (offset >= params.beacon_color_change.tail_len) {
15798                 err = -EINVAL;
15799                 goto out;
15800         }
15801
15802         if (params.beacon_color_change.tail[offset] != params.count) {
15803                 err = -EINVAL;
15804                 goto out;
15805         }
15806
15807         params.counter_offset_beacon = offset;
15808
15809         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
15810                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
15811                     sizeof(u16)) {
15812                         err = -EINVAL;
15813                         goto out;
15814                 }
15815
15816                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
15817                 if (offset >= params.beacon_color_change.probe_resp_len) {
15818                         err = -EINVAL;
15819                         goto out;
15820                 }
15821
15822                 if (params.beacon_color_change.probe_resp[offset] !=
15823                     params.count) {
15824                         err = -EINVAL;
15825                         goto out;
15826                 }
15827
15828                 params.counter_offset_presp = offset;
15829         }
15830
15831         wdev_lock(wdev);
15832         err = rdev_color_change(rdev, dev, &params);
15833         wdev_unlock(wdev);
15834
15835 out:
15836         kfree(params.beacon_next.mbssid_ies);
15837         kfree(params.beacon_color_change.mbssid_ies);
15838         kfree(tb);
15839         return err;
15840 }
15841
15842 static int nl80211_set_fils_aad(struct sk_buff *skb,
15843                                 struct genl_info *info)
15844 {
15845         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15846         struct net_device *dev = info->user_ptr[1];
15847         struct cfg80211_fils_aad fils_aad = {};
15848         u8 *nonces;
15849
15850         if (!info->attrs[NL80211_ATTR_MAC] ||
15851             !info->attrs[NL80211_ATTR_FILS_KEK] ||
15852             !info->attrs[NL80211_ATTR_FILS_NONCES])
15853                 return -EINVAL;
15854
15855         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15856         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
15857         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
15858         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
15859         fils_aad.snonce = nonces;
15860         fils_aad.anonce = nonces + FILS_NONCE_LEN;
15861
15862         return rdev_set_fils_aad(rdev, dev, &fils_aad);
15863 }
15864
15865 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
15866 {
15867         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15868         unsigned int link_id = nl80211_link_id(info->attrs);
15869         struct net_device *dev = info->user_ptr[1];
15870         struct wireless_dev *wdev = dev->ieee80211_ptr;
15871         int ret;
15872
15873         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
15874                 return -EINVAL;
15875
15876         switch (wdev->iftype) {
15877         case NL80211_IFTYPE_AP:
15878                 break;
15879         default:
15880                 return -EINVAL;
15881         }
15882
15883         if (!info->attrs[NL80211_ATTR_MAC] ||
15884             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
15885                 return -EINVAL;
15886
15887         wdev_lock(wdev);
15888         wdev->valid_links |= BIT(link_id);
15889         ether_addr_copy(wdev->links[link_id].addr,
15890                         nla_data(info->attrs[NL80211_ATTR_MAC]));
15891
15892         ret = rdev_add_intf_link(rdev, wdev, link_id);
15893         if (ret) {
15894                 wdev->valid_links &= ~BIT(link_id);
15895                 eth_zero_addr(wdev->links[link_id].addr);
15896         }
15897         wdev_unlock(wdev);
15898
15899         return ret;
15900 }
15901
15902 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
15903 {
15904         unsigned int link_id = nl80211_link_id(info->attrs);
15905         struct net_device *dev = info->user_ptr[1];
15906         struct wireless_dev *wdev = dev->ieee80211_ptr;
15907
15908         /* cannot remove if there's no link */
15909         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15910                 return -EINVAL;
15911
15912         switch (wdev->iftype) {
15913         case NL80211_IFTYPE_AP:
15914                 break;
15915         default:
15916                 return -EINVAL;
15917         }
15918
15919         wdev_lock(wdev);
15920         cfg80211_remove_link(wdev, link_id);
15921         wdev_unlock(wdev);
15922
15923         return 0;
15924 }
15925
15926 static int
15927 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
15928                              bool add)
15929 {
15930         struct link_station_parameters params = {};
15931         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15932         struct net_device *dev = info->user_ptr[1];
15933         int err;
15934
15935         if ((add && !rdev->ops->add_link_station) ||
15936             (!add && !rdev->ops->mod_link_station))
15937                 return -EOPNOTSUPP;
15938
15939         if (add && !info->attrs[NL80211_ATTR_MAC])
15940                 return -EINVAL;
15941
15942         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
15943                 return -EINVAL;
15944
15945         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
15946                 return -EINVAL;
15947
15948         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
15949
15950         if (info->attrs[NL80211_ATTR_MAC]) {
15951                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
15952                 if (!is_valid_ether_addr(params.link_mac))
15953                         return -EINVAL;
15954         }
15955
15956         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15957                 return -EINVAL;
15958
15959         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
15960
15961         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
15962                 params.supported_rates =
15963                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15964                 params.supported_rates_len =
15965                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15966         }
15967
15968         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
15969                 params.ht_capa =
15970                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
15971
15972         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
15973                 params.vht_capa =
15974                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
15975
15976         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
15977                 params.he_capa =
15978                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15979                 params.he_capa_len =
15980                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15981
15982                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
15983                         params.eht_capa =
15984                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15985                         params.eht_capa_len =
15986                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15987
15988                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
15989                                                         (const u8 *)params.eht_capa,
15990                                                         params.eht_capa_len,
15991                                                         false))
15992                                 return -EINVAL;
15993                 }
15994         }
15995
15996         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
15997                 params.he_6ghz_capa =
15998                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
15999
16000         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16001                 params.opmode_notif_used = true;
16002                 params.opmode_notif =
16003                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16004         }
16005
16006         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16007                                                 &params.txpwr_set);
16008         if (err)
16009                 return err;
16010
16011         wdev_lock(dev->ieee80211_ptr);
16012         if (add)
16013                 err = rdev_add_link_station(rdev, dev, &params);
16014         else
16015                 err = rdev_mod_link_station(rdev, dev, &params);
16016         wdev_unlock(dev->ieee80211_ptr);
16017
16018         return err;
16019 }
16020
16021 static int
16022 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16023 {
16024         return nl80211_add_mod_link_station(skb, info, true);
16025 }
16026
16027 static int
16028 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16029 {
16030         return nl80211_add_mod_link_station(skb, info, false);
16031 }
16032
16033 static int
16034 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16035 {
16036         struct link_station_del_parameters params = {};
16037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16038         struct net_device *dev = info->user_ptr[1];
16039         int ret;
16040
16041         if (!rdev->ops->del_link_station)
16042                 return -EOPNOTSUPP;
16043
16044         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16045             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16046                 return -EINVAL;
16047
16048         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16049         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16050
16051         wdev_lock(dev->ieee80211_ptr);
16052         ret = rdev_del_link_station(rdev, dev, &params);
16053         wdev_unlock(dev->ieee80211_ptr);
16054
16055         return ret;
16056 }
16057
16058 #define NL80211_FLAG_NEED_WIPHY         0x01
16059 #define NL80211_FLAG_NEED_NETDEV        0x02
16060 #define NL80211_FLAG_NEED_RTNL          0x04
16061 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16062 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16063                                          NL80211_FLAG_CHECK_NETDEV_UP)
16064 #define NL80211_FLAG_NEED_WDEV          0x10
16065 /* If a netdev is associated, it must be UP, P2P must be started */
16066 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16067                                          NL80211_FLAG_CHECK_NETDEV_UP)
16068 #define NL80211_FLAG_CLEAR_SKB          0x20
16069 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16070 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16071 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16072
16073 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16074         SELECTOR(__sel, NONE, 0) /* must be first */    \
16075         SELECTOR(__sel, WIPHY,                          \
16076                  NL80211_FLAG_NEED_WIPHY)               \
16077         SELECTOR(__sel, WDEV,                           \
16078                  NL80211_FLAG_NEED_WDEV)                \
16079         SELECTOR(__sel, NETDEV,                         \
16080                  NL80211_FLAG_NEED_NETDEV)              \
16081         SELECTOR(__sel, NETDEV_LINK,                    \
16082                  NL80211_FLAG_NEED_NETDEV |             \
16083                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16084         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16085                  NL80211_FLAG_NEED_NETDEV |             \
16086                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16087         SELECTOR(__sel, WIPHY_RTNL,                     \
16088                  NL80211_FLAG_NEED_WIPHY |              \
16089                  NL80211_FLAG_NEED_RTNL)                \
16090         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16091                  NL80211_FLAG_NEED_WIPHY |              \
16092                  NL80211_FLAG_NEED_RTNL |               \
16093                  NL80211_FLAG_NO_WIPHY_MTX)             \
16094         SELECTOR(__sel, WDEV_RTNL,                      \
16095                  NL80211_FLAG_NEED_WDEV |               \
16096                  NL80211_FLAG_NEED_RTNL)                \
16097         SELECTOR(__sel, NETDEV_RTNL,                    \
16098                  NL80211_FLAG_NEED_NETDEV |             \
16099                  NL80211_FLAG_NEED_RTNL)                \
16100         SELECTOR(__sel, NETDEV_UP,                      \
16101                  NL80211_FLAG_NEED_NETDEV_UP)           \
16102         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16103                  NL80211_FLAG_NEED_NETDEV_UP |          \
16104                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16105         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16106                  NL80211_FLAG_NEED_NETDEV_UP |          \
16107                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16108         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16109                  NL80211_FLAG_NEED_NETDEV_UP |          \
16110                  NL80211_FLAG_CLEAR_SKB |               \
16111                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16112         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16113                  NL80211_FLAG_NEED_NETDEV_UP |          \
16114                  NL80211_FLAG_NO_WIPHY_MTX)             \
16115         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16116                  NL80211_FLAG_NEED_NETDEV_UP |          \
16117                  NL80211_FLAG_NO_WIPHY_MTX |            \
16118                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16119         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16120                  NL80211_FLAG_NEED_NETDEV_UP |          \
16121                  NL80211_FLAG_CLEAR_SKB)                \
16122         SELECTOR(__sel, WDEV_UP,                        \
16123                  NL80211_FLAG_NEED_WDEV_UP)             \
16124         SELECTOR(__sel, WDEV_UP_LINK,                   \
16125                  NL80211_FLAG_NEED_WDEV_UP |            \
16126                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16127         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16128                  NL80211_FLAG_NEED_WDEV_UP |            \
16129                  NL80211_FLAG_NEED_RTNL)                \
16130         SELECTOR(__sel, WIPHY_CLEAR,                    \
16131                  NL80211_FLAG_NEED_WIPHY |              \
16132                  NL80211_FLAG_CLEAR_SKB)
16133
16134 enum nl80211_internal_flags_selector {
16135 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16136         INTERNAL_FLAG_SELECTORS(_)
16137 #undef SELECTOR
16138 };
16139
16140 static u32 nl80211_internal_flags[] = {
16141 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16142         INTERNAL_FLAG_SELECTORS(_)
16143 #undef SELECTOR
16144 };
16145
16146 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16147                             struct sk_buff *skb,
16148                             struct genl_info *info)
16149 {
16150         struct cfg80211_registered_device *rdev = NULL;
16151         struct wireless_dev *wdev = NULL;
16152         struct net_device *dev = NULL;
16153         u32 internal_flags;
16154         int err;
16155
16156         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16157                 return -EINVAL;
16158
16159         internal_flags = nl80211_internal_flags[ops->internal_flags];
16160
16161         rtnl_lock();
16162         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16163                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16164                 if (IS_ERR(rdev)) {
16165                         err = PTR_ERR(rdev);
16166                         goto out_unlock;
16167                 }
16168                 info->user_ptr[0] = rdev;
16169         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16170                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16171                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16172                                                   info->attrs);
16173                 if (IS_ERR(wdev)) {
16174                         err = PTR_ERR(wdev);
16175                         goto out_unlock;
16176                 }
16177
16178                 dev = wdev->netdev;
16179                 dev_hold(dev);
16180                 rdev = wiphy_to_rdev(wdev->wiphy);
16181
16182                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16183                         if (!dev) {
16184                                 err = -EINVAL;
16185                                 goto out_unlock;
16186                         }
16187
16188                         info->user_ptr[1] = dev;
16189                 } else {
16190                         info->user_ptr[1] = wdev;
16191                 }
16192
16193                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16194                     !wdev_running(wdev)) {
16195                         err = -ENETDOWN;
16196                         goto out_unlock;
16197                 }
16198
16199                 info->user_ptr[0] = rdev;
16200         }
16201
16202         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16203                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16204
16205                 if (!wdev) {
16206                         err = -EINVAL;
16207                         goto out_unlock;
16208                 }
16209
16210                 /* MLO -> require valid link ID */
16211                 if (wdev->valid_links &&
16212                     (!link_id ||
16213                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16214                         err = -EINVAL;
16215                         goto out_unlock;
16216                 }
16217
16218                 /* non-MLO -> no link ID attribute accepted */
16219                 if (!wdev->valid_links && link_id) {
16220                         err = -EINVAL;
16221                         goto out_unlock;
16222                 }
16223         }
16224
16225         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16226                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16227                     (wdev && wdev->valid_links)) {
16228                         err = -EINVAL;
16229                         goto out_unlock;
16230                 }
16231         }
16232
16233         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16234                 wiphy_lock(&rdev->wiphy);
16235                 /* we keep the mutex locked until post_doit */
16236                 __release(&rdev->wiphy.mtx);
16237         }
16238         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16239                 rtnl_unlock();
16240
16241         return 0;
16242 out_unlock:
16243         rtnl_unlock();
16244         dev_put(dev);
16245         return err;
16246 }
16247
16248 static void nl80211_post_doit(const struct genl_split_ops *ops,
16249                               struct sk_buff *skb,
16250                               struct genl_info *info)
16251 {
16252         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16253
16254         if (info->user_ptr[1]) {
16255                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16256                         struct wireless_dev *wdev = info->user_ptr[1];
16257
16258                         dev_put(wdev->netdev);
16259                 } else {
16260                         dev_put(info->user_ptr[1]);
16261                 }
16262         }
16263
16264         if (info->user_ptr[0] &&
16265             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16266                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16267
16268                 /* we kept the mutex locked since pre_doit */
16269                 __acquire(&rdev->wiphy.mtx);
16270                 wiphy_unlock(&rdev->wiphy);
16271         }
16272
16273         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16274                 rtnl_unlock();
16275
16276         /* If needed, clear the netlink message payload from the SKB
16277          * as it might contain key data that shouldn't stick around on
16278          * the heap after the SKB is freed. The netlink message header
16279          * is still needed for further processing, so leave it intact.
16280          */
16281         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16282                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16283
16284                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16285         }
16286 }
16287
16288 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16289                                      struct cfg80211_sar_specs *sar_specs,
16290                                      struct nlattr *spec[], int index)
16291 {
16292         u32 range_index, i;
16293
16294         if (!sar_specs || !spec)
16295                 return -EINVAL;
16296
16297         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16298             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16299                 return -EINVAL;
16300
16301         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16302
16303         /* check if range_index exceeds num_freq_ranges */
16304         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16305                 return -EINVAL;
16306
16307         /* check if range_index duplicates */
16308         for (i = 0; i < index; i++) {
16309                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16310                         return -EINVAL;
16311         }
16312
16313         sar_specs->sub_specs[index].power =
16314                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16315
16316         sar_specs->sub_specs[index].freq_range_index = range_index;
16317
16318         return 0;
16319 }
16320
16321 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16322 {
16323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16324         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16325         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16326         struct cfg80211_sar_specs *sar_spec;
16327         enum nl80211_sar_type type;
16328         struct nlattr *spec_list;
16329         u32 specs;
16330         int rem, err;
16331
16332         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16333                 return -EOPNOTSUPP;
16334
16335         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16336                 return -EINVAL;
16337
16338         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16339                          info->attrs[NL80211_ATTR_SAR_SPEC],
16340                          NULL, NULL);
16341
16342         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16343                 return -EINVAL;
16344
16345         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16346         if (type != rdev->wiphy.sar_capa->type)
16347                 return -EINVAL;
16348
16349         specs = 0;
16350         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16351                 specs++;
16352
16353         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16354                 return -EINVAL;
16355
16356         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16357         if (!sar_spec)
16358                 return -ENOMEM;
16359
16360         sar_spec->type = type;
16361         specs = 0;
16362         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16363                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16364                                  spec_list, NULL, NULL);
16365
16366                 switch (type) {
16367                 case NL80211_SAR_TYPE_POWER:
16368                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16369                                                       spec, specs)) {
16370                                 err = -EINVAL;
16371                                 goto error;
16372                         }
16373                         break;
16374                 default:
16375                         err = -EINVAL;
16376                         goto error;
16377                 }
16378                 specs++;
16379         }
16380
16381         sar_spec->num_sub_specs = specs;
16382
16383         rdev->cur_cmd_info = info;
16384         err = rdev_set_sar_specs(rdev, sar_spec);
16385         rdev->cur_cmd_info = NULL;
16386 error:
16387         kfree(sar_spec);
16388         return err;
16389 }
16390
16391 #define SELECTOR(__sel, name, value) \
16392         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16393 int __missing_selector(void);
16394 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16395
16396 static const struct genl_ops nl80211_ops[] = {
16397         {
16398                 .cmd = NL80211_CMD_GET_WIPHY,
16399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16400                 .doit = nl80211_get_wiphy,
16401                 .dumpit = nl80211_dump_wiphy,
16402                 .done = nl80211_dump_wiphy_done,
16403                 /* can be retrieved by unprivileged users */
16404                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16405         },
16406 };
16407
16408 static const struct genl_small_ops nl80211_small_ops[] = {
16409         {
16410                 .cmd = NL80211_CMD_SET_WIPHY,
16411                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16412                 .doit = nl80211_set_wiphy,
16413                 .flags = GENL_UNS_ADMIN_PERM,
16414         },
16415         {
16416                 .cmd = NL80211_CMD_GET_INTERFACE,
16417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16418                 .doit = nl80211_get_interface,
16419                 .dumpit = nl80211_dump_interface,
16420                 /* can be retrieved by unprivileged users */
16421                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16422         },
16423         {
16424                 .cmd = NL80211_CMD_SET_INTERFACE,
16425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16426                 .doit = nl80211_set_interface,
16427                 .flags = GENL_UNS_ADMIN_PERM,
16428                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16429                                          NL80211_FLAG_NEED_RTNL),
16430         },
16431         {
16432                 .cmd = NL80211_CMD_NEW_INTERFACE,
16433                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16434                 .doit = nl80211_new_interface,
16435                 .flags = GENL_UNS_ADMIN_PERM,
16436                 .internal_flags =
16437                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16438                                NL80211_FLAG_NEED_RTNL |
16439                                /* we take the wiphy mutex later ourselves */
16440                                NL80211_FLAG_NO_WIPHY_MTX),
16441         },
16442         {
16443                 .cmd = NL80211_CMD_DEL_INTERFACE,
16444                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16445                 .doit = nl80211_del_interface,
16446                 .flags = GENL_UNS_ADMIN_PERM,
16447                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16448                                          NL80211_FLAG_NEED_RTNL),
16449         },
16450         {
16451                 .cmd = NL80211_CMD_GET_KEY,
16452                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16453                 .doit = nl80211_get_key,
16454                 .flags = GENL_UNS_ADMIN_PERM,
16455                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16456         },
16457         {
16458                 .cmd = NL80211_CMD_SET_KEY,
16459                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16460                 .doit = nl80211_set_key,
16461                 .flags = GENL_UNS_ADMIN_PERM,
16462                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16463                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16464                                          NL80211_FLAG_CLEAR_SKB),
16465         },
16466         {
16467                 .cmd = NL80211_CMD_NEW_KEY,
16468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16469                 .doit = nl80211_new_key,
16470                 .flags = GENL_UNS_ADMIN_PERM,
16471                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16472                                          NL80211_FLAG_CLEAR_SKB),
16473         },
16474         {
16475                 .cmd = NL80211_CMD_DEL_KEY,
16476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16477                 .doit = nl80211_del_key,
16478                 .flags = GENL_UNS_ADMIN_PERM,
16479                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16480         },
16481         {
16482                 .cmd = NL80211_CMD_SET_BEACON,
16483                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16484                 .flags = GENL_UNS_ADMIN_PERM,
16485                 .doit = nl80211_set_beacon,
16486                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16487                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16488         },
16489         {
16490                 .cmd = NL80211_CMD_START_AP,
16491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16492                 .flags = GENL_UNS_ADMIN_PERM,
16493                 .doit = nl80211_start_ap,
16494                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16495                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16496         },
16497         {
16498                 .cmd = NL80211_CMD_STOP_AP,
16499                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16500                 .flags = GENL_UNS_ADMIN_PERM,
16501                 .doit = nl80211_stop_ap,
16502                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16503                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16504         },
16505         {
16506                 .cmd = NL80211_CMD_GET_STATION,
16507                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16508                 .doit = nl80211_get_station,
16509                 .dumpit = nl80211_dump_station,
16510                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16511         },
16512         {
16513                 .cmd = NL80211_CMD_SET_STATION,
16514                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16515                 .doit = nl80211_set_station,
16516                 .flags = GENL_UNS_ADMIN_PERM,
16517                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16518         },
16519         {
16520                 .cmd = NL80211_CMD_NEW_STATION,
16521                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16522                 .doit = nl80211_new_station,
16523                 .flags = GENL_UNS_ADMIN_PERM,
16524                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16525         },
16526         {
16527                 .cmd = NL80211_CMD_DEL_STATION,
16528                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16529                 .doit = nl80211_del_station,
16530                 .flags = GENL_UNS_ADMIN_PERM,
16531                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16532         },
16533         {
16534                 .cmd = NL80211_CMD_GET_MPATH,
16535                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16536                 .doit = nl80211_get_mpath,
16537                 .dumpit = nl80211_dump_mpath,
16538                 .flags = GENL_UNS_ADMIN_PERM,
16539                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16540         },
16541         {
16542                 .cmd = NL80211_CMD_GET_MPP,
16543                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16544                 .doit = nl80211_get_mpp,
16545                 .dumpit = nl80211_dump_mpp,
16546                 .flags = GENL_UNS_ADMIN_PERM,
16547                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16548         },
16549         {
16550                 .cmd = NL80211_CMD_SET_MPATH,
16551                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16552                 .doit = nl80211_set_mpath,
16553                 .flags = GENL_UNS_ADMIN_PERM,
16554                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16555         },
16556         {
16557                 .cmd = NL80211_CMD_NEW_MPATH,
16558                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16559                 .doit = nl80211_new_mpath,
16560                 .flags = GENL_UNS_ADMIN_PERM,
16561                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16562         },
16563         {
16564                 .cmd = NL80211_CMD_DEL_MPATH,
16565                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16566                 .doit = nl80211_del_mpath,
16567                 .flags = GENL_UNS_ADMIN_PERM,
16568                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16569         },
16570         {
16571                 .cmd = NL80211_CMD_SET_BSS,
16572                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16573                 .doit = nl80211_set_bss,
16574                 .flags = GENL_UNS_ADMIN_PERM,
16575                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16576                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16577         },
16578         {
16579                 .cmd = NL80211_CMD_GET_REG,
16580                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16581                 .doit = nl80211_get_reg_do,
16582                 .dumpit = nl80211_get_reg_dump,
16583                 /* can be retrieved by unprivileged users */
16584         },
16585 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16586         {
16587                 .cmd = NL80211_CMD_SET_REG,
16588                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16589                 .doit = nl80211_set_reg,
16590                 .flags = GENL_ADMIN_PERM,
16591         },
16592 #endif
16593         {
16594                 .cmd = NL80211_CMD_REQ_SET_REG,
16595                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16596                 .doit = nl80211_req_set_reg,
16597                 .flags = GENL_ADMIN_PERM,
16598         },
16599         {
16600                 .cmd = NL80211_CMD_RELOAD_REGDB,
16601                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16602                 .doit = nl80211_reload_regdb,
16603                 .flags = GENL_ADMIN_PERM,
16604         },
16605         {
16606                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16607                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16608                 .doit = nl80211_get_mesh_config,
16609                 /* can be retrieved by unprivileged users */
16610                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16611         },
16612         {
16613                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16614                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16615                 .doit = nl80211_update_mesh_config,
16616                 .flags = GENL_UNS_ADMIN_PERM,
16617                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16618         },
16619         {
16620                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16621                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16622                 .doit = nl80211_trigger_scan,
16623                 .flags = GENL_UNS_ADMIN_PERM,
16624                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16625         },
16626         {
16627                 .cmd = NL80211_CMD_ABORT_SCAN,
16628                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16629                 .doit = nl80211_abort_scan,
16630                 .flags = GENL_UNS_ADMIN_PERM,
16631                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16632         },
16633         {
16634                 .cmd = NL80211_CMD_GET_SCAN,
16635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16636                 .dumpit = nl80211_dump_scan,
16637         },
16638         {
16639                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16640                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16641                 .doit = nl80211_start_sched_scan,
16642                 .flags = GENL_UNS_ADMIN_PERM,
16643                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16644         },
16645         {
16646                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16647                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16648                 .doit = nl80211_stop_sched_scan,
16649                 .flags = GENL_UNS_ADMIN_PERM,
16650                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16651         },
16652         {
16653                 .cmd = NL80211_CMD_AUTHENTICATE,
16654                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16655                 .doit = nl80211_authenticate,
16656                 .flags = GENL_UNS_ADMIN_PERM,
16657                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16658                                          NL80211_FLAG_CLEAR_SKB),
16659         },
16660         {
16661                 .cmd = NL80211_CMD_ASSOCIATE,
16662                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16663                 .doit = nl80211_associate,
16664                 .flags = GENL_UNS_ADMIN_PERM,
16665                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16666                                          NL80211_FLAG_CLEAR_SKB),
16667         },
16668         {
16669                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16670                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16671                 .doit = nl80211_deauthenticate,
16672                 .flags = GENL_UNS_ADMIN_PERM,
16673                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16674         },
16675         {
16676                 .cmd = NL80211_CMD_DISASSOCIATE,
16677                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16678                 .doit = nl80211_disassociate,
16679                 .flags = GENL_UNS_ADMIN_PERM,
16680                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16681         },
16682         {
16683                 .cmd = NL80211_CMD_JOIN_IBSS,
16684                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16685                 .doit = nl80211_join_ibss,
16686                 .flags = GENL_UNS_ADMIN_PERM,
16687                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16688         },
16689         {
16690                 .cmd = NL80211_CMD_LEAVE_IBSS,
16691                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16692                 .doit = nl80211_leave_ibss,
16693                 .flags = GENL_UNS_ADMIN_PERM,
16694                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16695         },
16696 #ifdef CONFIG_NL80211_TESTMODE
16697         {
16698                 .cmd = NL80211_CMD_TESTMODE,
16699                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16700                 .doit = nl80211_testmode_do,
16701                 .dumpit = nl80211_testmode_dump,
16702                 .flags = GENL_UNS_ADMIN_PERM,
16703                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16704         },
16705 #endif
16706         {
16707                 .cmd = NL80211_CMD_CONNECT,
16708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16709                 .doit = nl80211_connect,
16710                 .flags = GENL_UNS_ADMIN_PERM,
16711                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16712                                          NL80211_FLAG_CLEAR_SKB),
16713         },
16714         {
16715                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16717                 .doit = nl80211_update_connect_params,
16718                 .flags = GENL_ADMIN_PERM,
16719                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16720                                          NL80211_FLAG_CLEAR_SKB),
16721         },
16722         {
16723                 .cmd = NL80211_CMD_DISCONNECT,
16724                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16725                 .doit = nl80211_disconnect,
16726                 .flags = GENL_UNS_ADMIN_PERM,
16727                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16728         },
16729         {
16730                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16731                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16732                 .doit = nl80211_wiphy_netns,
16733                 .flags = GENL_UNS_ADMIN_PERM,
16734                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16735                                          NL80211_FLAG_NEED_RTNL |
16736                                          NL80211_FLAG_NO_WIPHY_MTX),
16737         },
16738         {
16739                 .cmd = NL80211_CMD_GET_SURVEY,
16740                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16741                 .dumpit = nl80211_dump_survey,
16742         },
16743         {
16744                 .cmd = NL80211_CMD_SET_PMKSA,
16745                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16746                 .doit = nl80211_setdel_pmksa,
16747                 .flags = GENL_UNS_ADMIN_PERM,
16748                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16749                                          NL80211_FLAG_CLEAR_SKB),
16750         },
16751         {
16752                 .cmd = NL80211_CMD_DEL_PMKSA,
16753                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16754                 .doit = nl80211_setdel_pmksa,
16755                 .flags = GENL_UNS_ADMIN_PERM,
16756                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16757         },
16758         {
16759                 .cmd = NL80211_CMD_FLUSH_PMKSA,
16760                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16761                 .doit = nl80211_flush_pmksa,
16762                 .flags = GENL_UNS_ADMIN_PERM,
16763                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16764         },
16765         {
16766                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
16767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16768                 .doit = nl80211_remain_on_channel,
16769                 .flags = GENL_UNS_ADMIN_PERM,
16770                 /* FIXME: requiring a link ID here is probably not good */
16771                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16772                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16773         },
16774         {
16775                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16776                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16777                 .doit = nl80211_cancel_remain_on_channel,
16778                 .flags = GENL_UNS_ADMIN_PERM,
16779                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16780         },
16781         {
16782                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
16783                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16784                 .doit = nl80211_set_tx_bitrate_mask,
16785                 .flags = GENL_UNS_ADMIN_PERM,
16786                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16787                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16788         },
16789         {
16790                 .cmd = NL80211_CMD_REGISTER_FRAME,
16791                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16792                 .doit = nl80211_register_mgmt,
16793                 .flags = GENL_UNS_ADMIN_PERM,
16794                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16795         },
16796         {
16797                 .cmd = NL80211_CMD_FRAME,
16798                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16799                 .doit = nl80211_tx_mgmt,
16800                 .flags = GENL_UNS_ADMIN_PERM,
16801                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16802         },
16803         {
16804                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
16805                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16806                 .doit = nl80211_tx_mgmt_cancel_wait,
16807                 .flags = GENL_UNS_ADMIN_PERM,
16808                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16809         },
16810         {
16811                 .cmd = NL80211_CMD_SET_POWER_SAVE,
16812                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16813                 .doit = nl80211_set_power_save,
16814                 .flags = GENL_UNS_ADMIN_PERM,
16815                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16816         },
16817         {
16818                 .cmd = NL80211_CMD_GET_POWER_SAVE,
16819                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16820                 .doit = nl80211_get_power_save,
16821                 /* can be retrieved by unprivileged users */
16822                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16823         },
16824         {
16825                 .cmd = NL80211_CMD_SET_CQM,
16826                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16827                 .doit = nl80211_set_cqm,
16828                 .flags = GENL_UNS_ADMIN_PERM,
16829                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16830         },
16831         {
16832                 .cmd = NL80211_CMD_SET_CHANNEL,
16833                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16834                 .doit = nl80211_set_channel,
16835                 .flags = GENL_UNS_ADMIN_PERM,
16836                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16837                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16838         },
16839         {
16840                 .cmd = NL80211_CMD_JOIN_MESH,
16841                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16842                 .doit = nl80211_join_mesh,
16843                 .flags = GENL_UNS_ADMIN_PERM,
16844                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16845         },
16846         {
16847                 .cmd = NL80211_CMD_LEAVE_MESH,
16848                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16849                 .doit = nl80211_leave_mesh,
16850                 .flags = GENL_UNS_ADMIN_PERM,
16851                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16852         },
16853         {
16854                 .cmd = NL80211_CMD_JOIN_OCB,
16855                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16856                 .doit = nl80211_join_ocb,
16857                 .flags = GENL_UNS_ADMIN_PERM,
16858                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16859         },
16860         {
16861                 .cmd = NL80211_CMD_LEAVE_OCB,
16862                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16863                 .doit = nl80211_leave_ocb,
16864                 .flags = GENL_UNS_ADMIN_PERM,
16865                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16866         },
16867 #ifdef CONFIG_PM
16868         {
16869                 .cmd = NL80211_CMD_GET_WOWLAN,
16870                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16871                 .doit = nl80211_get_wowlan,
16872                 /* can be retrieved by unprivileged users */
16873                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16874         },
16875         {
16876                 .cmd = NL80211_CMD_SET_WOWLAN,
16877                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16878                 .doit = nl80211_set_wowlan,
16879                 .flags = GENL_UNS_ADMIN_PERM,
16880                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16881         },
16882 #endif
16883         {
16884                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
16885                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16886                 .doit = nl80211_set_rekey_data,
16887                 .flags = GENL_UNS_ADMIN_PERM,
16888                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16889                                          NL80211_FLAG_CLEAR_SKB),
16890         },
16891         {
16892                 .cmd = NL80211_CMD_TDLS_MGMT,
16893                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16894                 .doit = nl80211_tdls_mgmt,
16895                 .flags = GENL_UNS_ADMIN_PERM,
16896                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16897         },
16898         {
16899                 .cmd = NL80211_CMD_TDLS_OPER,
16900                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16901                 .doit = nl80211_tdls_oper,
16902                 .flags = GENL_UNS_ADMIN_PERM,
16903                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16904         },
16905         {
16906                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
16907                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16908                 .doit = nl80211_register_unexpected_frame,
16909                 .flags = GENL_UNS_ADMIN_PERM,
16910                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16911         },
16912         {
16913                 .cmd = NL80211_CMD_PROBE_CLIENT,
16914                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16915                 .doit = nl80211_probe_client,
16916                 .flags = GENL_UNS_ADMIN_PERM,
16917                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16918         },
16919         {
16920                 .cmd = NL80211_CMD_REGISTER_BEACONS,
16921                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16922                 .doit = nl80211_register_beacons,
16923                 .flags = GENL_UNS_ADMIN_PERM,
16924                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16925         },
16926         {
16927                 .cmd = NL80211_CMD_SET_NOACK_MAP,
16928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16929                 .doit = nl80211_set_noack_map,
16930                 .flags = GENL_UNS_ADMIN_PERM,
16931                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16932         },
16933         {
16934                 .cmd = NL80211_CMD_START_P2P_DEVICE,
16935                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16936                 .doit = nl80211_start_p2p_device,
16937                 .flags = GENL_UNS_ADMIN_PERM,
16938                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16939                                          NL80211_FLAG_NEED_RTNL),
16940         },
16941         {
16942                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
16943                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16944                 .doit = nl80211_stop_p2p_device,
16945                 .flags = GENL_UNS_ADMIN_PERM,
16946                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16947                                          NL80211_FLAG_NEED_RTNL),
16948         },
16949         {
16950                 .cmd = NL80211_CMD_START_NAN,
16951                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16952                 .doit = nl80211_start_nan,
16953                 .flags = GENL_ADMIN_PERM,
16954                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16955                                          NL80211_FLAG_NEED_RTNL),
16956         },
16957         {
16958                 .cmd = NL80211_CMD_STOP_NAN,
16959                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16960                 .doit = nl80211_stop_nan,
16961                 .flags = GENL_ADMIN_PERM,
16962                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16963                                          NL80211_FLAG_NEED_RTNL),
16964         },
16965         {
16966                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
16967                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16968                 .doit = nl80211_nan_add_func,
16969                 .flags = GENL_ADMIN_PERM,
16970                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16971         },
16972         {
16973                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
16974                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16975                 .doit = nl80211_nan_del_func,
16976                 .flags = GENL_ADMIN_PERM,
16977                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16978         },
16979         {
16980                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
16981                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16982                 .doit = nl80211_nan_change_config,
16983                 .flags = GENL_ADMIN_PERM,
16984                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16985         },
16986         {
16987                 .cmd = NL80211_CMD_SET_MCAST_RATE,
16988                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16989                 .doit = nl80211_set_mcast_rate,
16990                 .flags = GENL_UNS_ADMIN_PERM,
16991                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16992         },
16993         {
16994                 .cmd = NL80211_CMD_SET_MAC_ACL,
16995                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16996                 .doit = nl80211_set_mac_acl,
16997                 .flags = GENL_UNS_ADMIN_PERM,
16998                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16999                                          NL80211_FLAG_MLO_UNSUPPORTED),
17000         },
17001         {
17002                 .cmd = NL80211_CMD_RADAR_DETECT,
17003                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17004                 .doit = nl80211_start_radar_detection,
17005                 .flags = GENL_UNS_ADMIN_PERM,
17006                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17007                                          NL80211_FLAG_NO_WIPHY_MTX |
17008                                          NL80211_FLAG_MLO_UNSUPPORTED),
17009         },
17010         {
17011                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17012                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17013                 .doit = nl80211_get_protocol_features,
17014         },
17015         {
17016                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17017                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17018                 .doit = nl80211_update_ft_ies,
17019                 .flags = GENL_UNS_ADMIN_PERM,
17020                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17021         },
17022         {
17023                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17025                 .doit = nl80211_crit_protocol_start,
17026                 .flags = GENL_UNS_ADMIN_PERM,
17027                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17028         },
17029         {
17030                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17031                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17032                 .doit = nl80211_crit_protocol_stop,
17033                 .flags = GENL_UNS_ADMIN_PERM,
17034                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17035         },
17036         {
17037                 .cmd = NL80211_CMD_GET_COALESCE,
17038                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17039                 .doit = nl80211_get_coalesce,
17040                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17041         },
17042         {
17043                 .cmd = NL80211_CMD_SET_COALESCE,
17044                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17045                 .doit = nl80211_set_coalesce,
17046                 .flags = GENL_UNS_ADMIN_PERM,
17047                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17048         },
17049         {
17050                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17051                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17052                 .doit = nl80211_channel_switch,
17053                 .flags = GENL_UNS_ADMIN_PERM,
17054                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17055                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17056         },
17057         {
17058                 .cmd = NL80211_CMD_VENDOR,
17059                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17060                 .doit = nl80211_vendor_cmd,
17061                 .dumpit = nl80211_vendor_cmd_dump,
17062                 .flags = GENL_UNS_ADMIN_PERM,
17063                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17064                                          NL80211_FLAG_CLEAR_SKB),
17065         },
17066         {
17067                 .cmd = NL80211_CMD_SET_QOS_MAP,
17068                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17069                 .doit = nl80211_set_qos_map,
17070                 .flags = GENL_UNS_ADMIN_PERM,
17071                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17072         },
17073         {
17074                 .cmd = NL80211_CMD_ADD_TX_TS,
17075                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17076                 .doit = nl80211_add_tx_ts,
17077                 .flags = GENL_UNS_ADMIN_PERM,
17078                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17079                                          NL80211_FLAG_MLO_UNSUPPORTED),
17080         },
17081         {
17082                 .cmd = NL80211_CMD_DEL_TX_TS,
17083                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17084                 .doit = nl80211_del_tx_ts,
17085                 .flags = GENL_UNS_ADMIN_PERM,
17086                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17087         },
17088         {
17089                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17090                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17091                 .doit = nl80211_tdls_channel_switch,
17092                 .flags = GENL_UNS_ADMIN_PERM,
17093                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17094         },
17095         {
17096                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17097                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17098                 .doit = nl80211_tdls_cancel_channel_switch,
17099                 .flags = GENL_UNS_ADMIN_PERM,
17100                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17101         },
17102         {
17103                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17104                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17105                 .doit = nl80211_set_multicast_to_unicast,
17106                 .flags = GENL_UNS_ADMIN_PERM,
17107                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17108         },
17109         {
17110                 .cmd = NL80211_CMD_SET_PMK,
17111                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17112                 .doit = nl80211_set_pmk,
17113                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17114                                          NL80211_FLAG_CLEAR_SKB),
17115         },
17116         {
17117                 .cmd = NL80211_CMD_DEL_PMK,
17118                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17119                 .doit = nl80211_del_pmk,
17120                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17121         },
17122         {
17123                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17124                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17125                 .doit = nl80211_external_auth,
17126                 .flags = GENL_ADMIN_PERM,
17127                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17128         },
17129         {
17130                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17131                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17132                 .doit = nl80211_tx_control_port,
17133                 .flags = GENL_UNS_ADMIN_PERM,
17134                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17135         },
17136         {
17137                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17138                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17139                 .doit = nl80211_get_ftm_responder_stats,
17140                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17141                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17142         },
17143         {
17144                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17145                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17146                 .doit = nl80211_pmsr_start,
17147                 .flags = GENL_UNS_ADMIN_PERM,
17148                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17149         },
17150         {
17151                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17152                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17153                 .doit = nl80211_notify_radar_detection,
17154                 .flags = GENL_UNS_ADMIN_PERM,
17155                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17156         },
17157         {
17158                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17159                 .doit = nl80211_update_owe_info,
17160                 .flags = GENL_ADMIN_PERM,
17161                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17162         },
17163         {
17164                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17165                 .doit = nl80211_probe_mesh_link,
17166                 .flags = GENL_UNS_ADMIN_PERM,
17167                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17168         },
17169         {
17170                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17171                 .doit = nl80211_set_tid_config,
17172                 .flags = GENL_UNS_ADMIN_PERM,
17173                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17174                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17175         },
17176         {
17177                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17178                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17179                 .doit = nl80211_set_sar_specs,
17180                 .flags = GENL_UNS_ADMIN_PERM,
17181                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17182                                          NL80211_FLAG_NEED_RTNL),
17183         },
17184         {
17185                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17186                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17187                 .doit = nl80211_color_change,
17188                 .flags = GENL_UNS_ADMIN_PERM,
17189                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17190         },
17191         {
17192                 .cmd = NL80211_CMD_SET_FILS_AAD,
17193                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17194                 .doit = nl80211_set_fils_aad,
17195                 .flags = GENL_UNS_ADMIN_PERM,
17196                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17197         },
17198         {
17199                 .cmd = NL80211_CMD_ADD_LINK,
17200                 .doit = nl80211_add_link,
17201                 .flags = GENL_UNS_ADMIN_PERM,
17202                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17203         },
17204         {
17205                 .cmd = NL80211_CMD_REMOVE_LINK,
17206                 .doit = nl80211_remove_link,
17207                 .flags = GENL_UNS_ADMIN_PERM,
17208                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17209                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17210         },
17211         {
17212                 .cmd = NL80211_CMD_ADD_LINK_STA,
17213                 .doit = nl80211_add_link_station,
17214                 .flags = GENL_UNS_ADMIN_PERM,
17215                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17216                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17217         },
17218         {
17219                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17220                 .doit = nl80211_modify_link_station,
17221                 .flags = GENL_UNS_ADMIN_PERM,
17222                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17223                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17224         },
17225         {
17226                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17227                 .doit = nl80211_remove_link_station,
17228                 .flags = GENL_UNS_ADMIN_PERM,
17229                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17230                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17231         },
17232 };
17233
17234 static struct genl_family nl80211_fam __ro_after_init = {
17235         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17236         .hdrsize = 0,                   /* no private header */
17237         .version = 1,                   /* no particular meaning now */
17238         .maxattr = NL80211_ATTR_MAX,
17239         .policy = nl80211_policy,
17240         .netnsok = true,
17241         .pre_doit = nl80211_pre_doit,
17242         .post_doit = nl80211_post_doit,
17243         .module = THIS_MODULE,
17244         .ops = nl80211_ops,
17245         .n_ops = ARRAY_SIZE(nl80211_ops),
17246         .small_ops = nl80211_small_ops,
17247         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17248         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17249         .mcgrps = nl80211_mcgrps,
17250         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17251         .parallel_ops = true,
17252 };
17253
17254 /* notification functions */
17255
17256 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17257                           enum nl80211_commands cmd)
17258 {
17259         struct sk_buff *msg;
17260         struct nl80211_dump_wiphy_state state = {};
17261
17262         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17263                 cmd != NL80211_CMD_DEL_WIPHY);
17264
17265         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17266         if (!msg)
17267                 return;
17268
17269         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17270                 nlmsg_free(msg);
17271                 return;
17272         }
17273
17274         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17275                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17276 }
17277
17278 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17279                                 struct wireless_dev *wdev,
17280                                 enum nl80211_commands cmd)
17281 {
17282         struct sk_buff *msg;
17283
17284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17285         if (!msg)
17286                 return;
17287
17288         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17289                 nlmsg_free(msg);
17290                 return;
17291         }
17292
17293         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17294                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17295 }
17296
17297 static int nl80211_add_scan_req(struct sk_buff *msg,
17298                                 struct cfg80211_registered_device *rdev)
17299 {
17300         struct cfg80211_scan_request *req = rdev->scan_req;
17301         struct nlattr *nest;
17302         int i;
17303         struct cfg80211_scan_info *info;
17304
17305         if (WARN_ON(!req))
17306                 return 0;
17307
17308         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17309         if (!nest)
17310                 goto nla_put_failure;
17311         for (i = 0; i < req->n_ssids; i++) {
17312                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17313                         goto nla_put_failure;
17314         }
17315         nla_nest_end(msg, nest);
17316
17317         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17318                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17319                 if (!nest)
17320                         goto nla_put_failure;
17321                 for (i = 0; i < req->n_channels; i++) {
17322                         if (nla_put_u32(msg, i,
17323                                    ieee80211_channel_to_khz(req->channels[i])))
17324                                 goto nla_put_failure;
17325                 }
17326                 nla_nest_end(msg, nest);
17327         } else {
17328                 nest = nla_nest_start_noflag(msg,
17329                                              NL80211_ATTR_SCAN_FREQUENCIES);
17330                 if (!nest)
17331                         goto nla_put_failure;
17332                 for (i = 0; i < req->n_channels; i++) {
17333                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17334                                 goto nla_put_failure;
17335                 }
17336                 nla_nest_end(msg, nest);
17337         }
17338
17339         if (req->ie &&
17340             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17341                 goto nla_put_failure;
17342
17343         if (req->flags &&
17344             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17345                 goto nla_put_failure;
17346
17347         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17348                 &rdev->scan_req->info;
17349         if (info->scan_start_tsf &&
17350             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17351                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17352              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17353                      info->tsf_bssid)))
17354                 goto nla_put_failure;
17355
17356         return 0;
17357  nla_put_failure:
17358         return -ENOBUFS;
17359 }
17360
17361 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17362                                  struct cfg80211_registered_device *rdev,
17363                                  struct wireless_dev *wdev,
17364                                  u32 portid, u32 seq, int flags,
17365                                  u32 cmd)
17366 {
17367         void *hdr;
17368
17369         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17370         if (!hdr)
17371                 return -1;
17372
17373         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17374             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17375                                          wdev->netdev->ifindex)) ||
17376             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17377                               NL80211_ATTR_PAD))
17378                 goto nla_put_failure;
17379
17380         /* ignore errors and send incomplete event anyway */
17381         nl80211_add_scan_req(msg, rdev);
17382
17383         genlmsg_end(msg, hdr);
17384         return 0;
17385
17386  nla_put_failure:
17387         genlmsg_cancel(msg, hdr);
17388         return -EMSGSIZE;
17389 }
17390
17391 static int
17392 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17393                             struct cfg80211_sched_scan_request *req, u32 cmd)
17394 {
17395         void *hdr;
17396
17397         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17398         if (!hdr)
17399                 return -1;
17400
17401         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17402                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17403             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17404             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17405                               NL80211_ATTR_PAD))
17406                 goto nla_put_failure;
17407
17408         genlmsg_end(msg, hdr);
17409         return 0;
17410
17411  nla_put_failure:
17412         genlmsg_cancel(msg, hdr);
17413         return -EMSGSIZE;
17414 }
17415
17416 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17417                              struct wireless_dev *wdev)
17418 {
17419         struct sk_buff *msg;
17420
17421         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17422         if (!msg)
17423                 return;
17424
17425         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17426                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17427                 nlmsg_free(msg);
17428                 return;
17429         }
17430
17431         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17432                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17433 }
17434
17435 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17436                                        struct wireless_dev *wdev, bool aborted)
17437 {
17438         struct sk_buff *msg;
17439
17440         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17441         if (!msg)
17442                 return NULL;
17443
17444         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17445                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17446                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17447                 nlmsg_free(msg);
17448                 return NULL;
17449         }
17450
17451         return msg;
17452 }
17453
17454 /* send message created by nl80211_build_scan_msg() */
17455 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17456                            struct sk_buff *msg)
17457 {
17458         if (!msg)
17459                 return;
17460
17461         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17462                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17463 }
17464
17465 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17466 {
17467         struct sk_buff *msg;
17468
17469         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17470         if (!msg)
17471                 return;
17472
17473         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17474                 nlmsg_free(msg);
17475                 return;
17476         }
17477
17478         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17479                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17480 }
17481
17482 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17483                                           struct regulatory_request *request)
17484 {
17485         /* Userspace can always count this one always being set */
17486         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17487                 goto nla_put_failure;
17488
17489         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17490                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17491                                NL80211_REGDOM_TYPE_WORLD))
17492                         goto nla_put_failure;
17493         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17494                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17495                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17496                         goto nla_put_failure;
17497         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17498                    request->intersect) {
17499                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17500                                NL80211_REGDOM_TYPE_INTERSECTION))
17501                         goto nla_put_failure;
17502         } else {
17503                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17504                                NL80211_REGDOM_TYPE_COUNTRY) ||
17505                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17506                                    request->alpha2))
17507                         goto nla_put_failure;
17508         }
17509
17510         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17511                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17512
17513                 if (wiphy &&
17514                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17515                         goto nla_put_failure;
17516
17517                 if (wiphy &&
17518                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17519                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17520                         goto nla_put_failure;
17521         }
17522
17523         return true;
17524
17525 nla_put_failure:
17526         return false;
17527 }
17528
17529 /*
17530  * This can happen on global regulatory changes or device specific settings
17531  * based on custom regulatory domains.
17532  */
17533 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17534                                      struct regulatory_request *request)
17535 {
17536         struct sk_buff *msg;
17537         void *hdr;
17538
17539         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17540         if (!msg)
17541                 return;
17542
17543         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17544         if (!hdr)
17545                 goto nla_put_failure;
17546
17547         if (!nl80211_reg_change_event_fill(msg, request))
17548                 goto nla_put_failure;
17549
17550         genlmsg_end(msg, hdr);
17551
17552         rcu_read_lock();
17553         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17554                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17555         rcu_read_unlock();
17556
17557         return;
17558
17559 nla_put_failure:
17560         nlmsg_free(msg);
17561 }
17562
17563 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17564                                     struct net_device *netdev,
17565                                     const u8 *buf, size_t len,
17566                                     enum nl80211_commands cmd, gfp_t gfp,
17567                                     int uapsd_queues, const u8 *req_ies,
17568                                     size_t req_ies_len, bool reconnect)
17569 {
17570         struct sk_buff *msg;
17571         void *hdr;
17572
17573         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17574         if (!msg)
17575                 return;
17576
17577         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17578         if (!hdr) {
17579                 nlmsg_free(msg);
17580                 return;
17581         }
17582
17583         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17584             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17585             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17586             (req_ies &&
17587              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17588                 goto nla_put_failure;
17589
17590         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17591                 goto nla_put_failure;
17592
17593         if (uapsd_queues >= 0) {
17594                 struct nlattr *nla_wmm =
17595                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17596                 if (!nla_wmm)
17597                         goto nla_put_failure;
17598
17599                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17600                                uapsd_queues))
17601                         goto nla_put_failure;
17602
17603                 nla_nest_end(msg, nla_wmm);
17604         }
17605
17606         genlmsg_end(msg, hdr);
17607
17608         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17609                                 NL80211_MCGRP_MLME, gfp);
17610         return;
17611
17612  nla_put_failure:
17613         nlmsg_free(msg);
17614 }
17615
17616 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17617                           struct net_device *netdev, const u8 *buf,
17618                           size_t len, gfp_t gfp)
17619 {
17620         nl80211_send_mlme_event(rdev, netdev, buf, len,
17621                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17622                                 false);
17623 }
17624
17625 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17626                            struct net_device *netdev,
17627                            struct cfg80211_rx_assoc_resp *data)
17628 {
17629         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17630                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17631                                 data->uapsd_queues,
17632                                 data->req_ies, data->req_ies_len, false);
17633 }
17634
17635 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17636                          struct net_device *netdev, const u8 *buf,
17637                          size_t len, bool reconnect, gfp_t gfp)
17638 {
17639         nl80211_send_mlme_event(rdev, netdev, buf, len,
17640                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17641                                 reconnect);
17642 }
17643
17644 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17645                            struct net_device *netdev, const u8 *buf,
17646                            size_t len, bool reconnect, gfp_t gfp)
17647 {
17648         nl80211_send_mlme_event(rdev, netdev, buf, len,
17649                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17650                                 reconnect);
17651 }
17652
17653 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17654                                   size_t len)
17655 {
17656         struct wireless_dev *wdev = dev->ieee80211_ptr;
17657         struct wiphy *wiphy = wdev->wiphy;
17658         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17659         const struct ieee80211_mgmt *mgmt = (void *)buf;
17660         u32 cmd;
17661
17662         if (WARN_ON(len < 2))
17663                 return;
17664
17665         if (ieee80211_is_deauth(mgmt->frame_control)) {
17666                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17667         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17668                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17669         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17670                 if (wdev->unprot_beacon_reported &&
17671                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17672                         return;
17673                 cmd = NL80211_CMD_UNPROT_BEACON;
17674                 wdev->unprot_beacon_reported = jiffies;
17675         } else {
17676                 return;
17677         }
17678
17679         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17680         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17681                                 NULL, 0, false);
17682 }
17683 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17684
17685 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17686                                       struct net_device *netdev, int cmd,
17687                                       const u8 *addr, gfp_t gfp)
17688 {
17689         struct sk_buff *msg;
17690         void *hdr;
17691
17692         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17693         if (!msg)
17694                 return;
17695
17696         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17697         if (!hdr) {
17698                 nlmsg_free(msg);
17699                 return;
17700         }
17701
17702         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17703             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17704             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17705             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17706                 goto nla_put_failure;
17707
17708         genlmsg_end(msg, hdr);
17709
17710         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17711                                 NL80211_MCGRP_MLME, gfp);
17712         return;
17713
17714  nla_put_failure:
17715         nlmsg_free(msg);
17716 }
17717
17718 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17719                                struct net_device *netdev, const u8 *addr,
17720                                gfp_t gfp)
17721 {
17722         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17723                                   addr, gfp);
17724 }
17725
17726 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17727                                 struct net_device *netdev, const u8 *addr,
17728                                 gfp_t gfp)
17729 {
17730         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17731                                   addr, gfp);
17732 }
17733
17734 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
17735                                  struct net_device *netdev,
17736                                  struct cfg80211_connect_resp_params *cr,
17737                                  gfp_t gfp)
17738 {
17739         struct sk_buff *msg;
17740         void *hdr;
17741         unsigned int link;
17742         size_t link_info_size = 0;
17743         const u8 *connected_addr = cr->valid_links ?
17744                                    cr->ap_mld_addr : cr->links[0].bssid;
17745
17746         if (cr->valid_links) {
17747                 for_each_valid_link(cr, link) {
17748                         /* Nested attribute header */
17749                         link_info_size += NLA_HDRLEN;
17750                         /* Link ID */
17751                         link_info_size += nla_total_size(sizeof(u8));
17752                         link_info_size += cr->links[link].addr ?
17753                                           nla_total_size(ETH_ALEN) : 0;
17754                         link_info_size += (cr->links[link].bssid ||
17755                                            cr->links[link].bss) ?
17756                                           nla_total_size(ETH_ALEN) : 0;
17757                         link_info_size += nla_total_size(sizeof(u16));
17758                 }
17759         }
17760
17761         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
17762                         cr->fils.kek_len + cr->fils.pmk_len +
17763                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
17764                         gfp);
17765         if (!msg)
17766                 return;
17767
17768         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
17769         if (!hdr) {
17770                 nlmsg_free(msg);
17771                 return;
17772         }
17773
17774         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17775             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17776             (connected_addr &&
17777              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
17778             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17779                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
17780                         cr->status) ||
17781             (cr->status < 0 &&
17782              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17783               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
17784                           cr->timeout_reason))) ||
17785             (cr->req_ie &&
17786              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
17787             (cr->resp_ie &&
17788              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
17789                      cr->resp_ie)) ||
17790             (cr->fils.update_erp_next_seq_num &&
17791              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17792                          cr->fils.erp_next_seq_num)) ||
17793             (cr->status == WLAN_STATUS_SUCCESS &&
17794              ((cr->fils.kek &&
17795                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
17796                        cr->fils.kek)) ||
17797               (cr->fils.pmk &&
17798                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
17799               (cr->fils.pmkid &&
17800                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
17801                 goto nla_put_failure;
17802
17803         if (cr->valid_links) {
17804                 int i = 1;
17805                 struct nlattr *nested;
17806
17807                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17808                 if (!nested)
17809                         goto nla_put_failure;
17810
17811                 for_each_valid_link(cr, link) {
17812                         struct nlattr *nested_mlo_links;
17813                         const u8 *bssid = cr->links[link].bss ?
17814                                           cr->links[link].bss->bssid :
17815                                           cr->links[link].bssid;
17816
17817                         nested_mlo_links = nla_nest_start(msg, i);
17818                         if (!nested_mlo_links)
17819                                 goto nla_put_failure;
17820
17821                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17822                             (bssid &&
17823                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17824                             (cr->links[link].addr &&
17825                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17826                                      cr->links[link].addr)) ||
17827                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17828                                         cr->links[link].status))
17829                                 goto nla_put_failure;
17830
17831                         nla_nest_end(msg, nested_mlo_links);
17832                         i++;
17833                 }
17834                 nla_nest_end(msg, nested);
17835         }
17836
17837         genlmsg_end(msg, hdr);
17838
17839         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17840                                 NL80211_MCGRP_MLME, gfp);
17841         return;
17842
17843  nla_put_failure:
17844         nlmsg_free(msg);
17845 }
17846
17847 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
17848                          struct net_device *netdev,
17849                          struct cfg80211_roam_info *info, gfp_t gfp)
17850 {
17851         struct sk_buff *msg;
17852         void *hdr;
17853         size_t link_info_size = 0;
17854         unsigned int link;
17855         const u8 *connected_addr = info->ap_mld_addr ?
17856                                    info->ap_mld_addr :
17857                                    (info->links[0].bss ?
17858                                     info->links[0].bss->bssid :
17859                                     info->links[0].bssid);
17860
17861         if (info->valid_links) {
17862                 for_each_valid_link(info, link) {
17863                         /* Nested attribute header */
17864                         link_info_size += NLA_HDRLEN;
17865                         /* Link ID */
17866                         link_info_size += nla_total_size(sizeof(u8));
17867                         link_info_size += info->links[link].addr ?
17868                                           nla_total_size(ETH_ALEN) : 0;
17869                         link_info_size += (info->links[link].bssid ||
17870                                            info->links[link].bss) ?
17871                                           nla_total_size(ETH_ALEN) : 0;
17872                 }
17873         }
17874
17875         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
17876                         info->fils.kek_len + info->fils.pmk_len +
17877                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
17878                         link_info_size, gfp);
17879         if (!msg)
17880                 return;
17881
17882         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
17883         if (!hdr) {
17884                 nlmsg_free(msg);
17885                 return;
17886         }
17887
17888         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17889             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17890             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
17891             (info->req_ie &&
17892              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
17893                      info->req_ie)) ||
17894             (info->resp_ie &&
17895              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
17896                      info->resp_ie)) ||
17897             (info->fils.update_erp_next_seq_num &&
17898              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17899                          info->fils.erp_next_seq_num)) ||
17900             (info->fils.kek &&
17901              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
17902                      info->fils.kek)) ||
17903             (info->fils.pmk &&
17904              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
17905             (info->fils.pmkid &&
17906              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
17907                 goto nla_put_failure;
17908
17909         if (info->valid_links) {
17910                 int i = 1;
17911                 struct nlattr *nested;
17912
17913                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17914                 if (!nested)
17915                         goto nla_put_failure;
17916
17917                 for_each_valid_link(info, link) {
17918                         struct nlattr *nested_mlo_links;
17919                         const u8 *bssid = info->links[link].bss ?
17920                                           info->links[link].bss->bssid :
17921                                           info->links[link].bssid;
17922
17923                         nested_mlo_links = nla_nest_start(msg, i);
17924                         if (!nested_mlo_links)
17925                                 goto nla_put_failure;
17926
17927                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17928                             (bssid &&
17929                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17930                             (info->links[link].addr &&
17931                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17932                                      info->links[link].addr)))
17933                                 goto nla_put_failure;
17934
17935                         nla_nest_end(msg, nested_mlo_links);
17936                         i++;
17937                 }
17938                 nla_nest_end(msg, nested);
17939         }
17940
17941         genlmsg_end(msg, hdr);
17942
17943         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17944                                 NL80211_MCGRP_MLME, gfp);
17945         return;
17946
17947  nla_put_failure:
17948         nlmsg_free(msg);
17949 }
17950
17951 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
17952                                   struct net_device *netdev, const u8 *bssid,
17953                                   const u8 *td_bitmap, u8 td_bitmap_len)
17954 {
17955         struct sk_buff *msg;
17956         void *hdr;
17957
17958         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17959         if (!msg)
17960                 return;
17961
17962         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
17963         if (!hdr) {
17964                 nlmsg_free(msg);
17965                 return;
17966         }
17967
17968         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17969             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17970             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17971                 goto nla_put_failure;
17972
17973         if ((td_bitmap_len > 0) && td_bitmap)
17974                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
17975                             td_bitmap_len, td_bitmap))
17976                         goto nla_put_failure;
17977
17978         genlmsg_end(msg, hdr);
17979
17980         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17981                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17982         return;
17983
17984  nla_put_failure:
17985         nlmsg_free(msg);
17986 }
17987
17988 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
17989                                struct net_device *netdev, u16 reason,
17990                                const u8 *ie, size_t ie_len, bool from_ap)
17991 {
17992         struct sk_buff *msg;
17993         void *hdr;
17994
17995         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
17996         if (!msg)
17997                 return;
17998
17999         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18000         if (!hdr) {
18001                 nlmsg_free(msg);
18002                 return;
18003         }
18004
18005         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18006             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18007             (reason &&
18008              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18009             (from_ap &&
18010              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18011             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18012                 goto nla_put_failure;
18013
18014         genlmsg_end(msg, hdr);
18015
18016         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18017                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18018         return;
18019
18020  nla_put_failure:
18021         nlmsg_free(msg);
18022 }
18023
18024 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18025                              struct net_device *netdev, const u8 *bssid,
18026                              gfp_t gfp)
18027 {
18028         struct sk_buff *msg;
18029         void *hdr;
18030
18031         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18032         if (!msg)
18033                 return;
18034
18035         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18036         if (!hdr) {
18037                 nlmsg_free(msg);
18038                 return;
18039         }
18040
18041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18042             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18043             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18044                 goto nla_put_failure;
18045
18046         genlmsg_end(msg, hdr);
18047
18048         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18049                                 NL80211_MCGRP_MLME, gfp);
18050         return;
18051
18052  nla_put_failure:
18053         nlmsg_free(msg);
18054 }
18055
18056 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18057                                         const u8 *ie, u8 ie_len,
18058                                         int sig_dbm, gfp_t gfp)
18059 {
18060         struct wireless_dev *wdev = dev->ieee80211_ptr;
18061         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18062         struct sk_buff *msg;
18063         void *hdr;
18064
18065         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18066                 return;
18067
18068         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18069
18070         msg = nlmsg_new(100 + ie_len, gfp);
18071         if (!msg)
18072                 return;
18073
18074         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18075         if (!hdr) {
18076                 nlmsg_free(msg);
18077                 return;
18078         }
18079
18080         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18081             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18082             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18083             (ie_len && ie &&
18084              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18085             (sig_dbm &&
18086              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18087                 goto nla_put_failure;
18088
18089         genlmsg_end(msg, hdr);
18090
18091         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18092                                 NL80211_MCGRP_MLME, gfp);
18093         return;
18094
18095  nla_put_failure:
18096         nlmsg_free(msg);
18097 }
18098 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18099
18100 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18101                                  struct net_device *netdev, const u8 *addr,
18102                                  enum nl80211_key_type key_type, int key_id,
18103                                  const u8 *tsc, gfp_t gfp)
18104 {
18105         struct sk_buff *msg;
18106         void *hdr;
18107
18108         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18109         if (!msg)
18110                 return;
18111
18112         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18113         if (!hdr) {
18114                 nlmsg_free(msg);
18115                 return;
18116         }
18117
18118         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18119             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18120             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18121             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18122             (key_id != -1 &&
18123              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18124             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18125                 goto nla_put_failure;
18126
18127         genlmsg_end(msg, hdr);
18128
18129         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18130                                 NL80211_MCGRP_MLME, gfp);
18131         return;
18132
18133  nla_put_failure:
18134         nlmsg_free(msg);
18135 }
18136
18137 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18138                                     struct ieee80211_channel *channel_before,
18139                                     struct ieee80211_channel *channel_after)
18140 {
18141         struct sk_buff *msg;
18142         void *hdr;
18143         struct nlattr *nl_freq;
18144
18145         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18146         if (!msg)
18147                 return;
18148
18149         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18150         if (!hdr) {
18151                 nlmsg_free(msg);
18152                 return;
18153         }
18154
18155         /*
18156          * Since we are applying the beacon hint to a wiphy we know its
18157          * wiphy_idx is valid
18158          */
18159         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18160                 goto nla_put_failure;
18161
18162         /* Before */
18163         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18164         if (!nl_freq)
18165                 goto nla_put_failure;
18166
18167         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18168                 goto nla_put_failure;
18169         nla_nest_end(msg, nl_freq);
18170
18171         /* After */
18172         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18173         if (!nl_freq)
18174                 goto nla_put_failure;
18175
18176         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18177                 goto nla_put_failure;
18178         nla_nest_end(msg, nl_freq);
18179
18180         genlmsg_end(msg, hdr);
18181
18182         rcu_read_lock();
18183         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18184                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18185         rcu_read_unlock();
18186
18187         return;
18188
18189 nla_put_failure:
18190         nlmsg_free(msg);
18191 }
18192
18193 static void nl80211_send_remain_on_chan_event(
18194         int cmd, struct cfg80211_registered_device *rdev,
18195         struct wireless_dev *wdev, u64 cookie,
18196         struct ieee80211_channel *chan,
18197         unsigned int duration, gfp_t gfp)
18198 {
18199         struct sk_buff *msg;
18200         void *hdr;
18201
18202         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18203         if (!msg)
18204                 return;
18205
18206         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18207         if (!hdr) {
18208                 nlmsg_free(msg);
18209                 return;
18210         }
18211
18212         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18213             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18214                                          wdev->netdev->ifindex)) ||
18215             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18216                               NL80211_ATTR_PAD) ||
18217             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18218             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18219                         NL80211_CHAN_NO_HT) ||
18220             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18221                               NL80211_ATTR_PAD))
18222                 goto nla_put_failure;
18223
18224         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18225             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18226                 goto nla_put_failure;
18227
18228         genlmsg_end(msg, hdr);
18229
18230         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18231                                 NL80211_MCGRP_MLME, gfp);
18232         return;
18233
18234  nla_put_failure:
18235         nlmsg_free(msg);
18236 }
18237
18238 void cfg80211_assoc_comeback(struct net_device *netdev,
18239                              const u8 *ap_addr, u32 timeout)
18240 {
18241         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18242         struct wiphy *wiphy = wdev->wiphy;
18243         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18244         struct sk_buff *msg;
18245         void *hdr;
18246
18247         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18248
18249         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18250         if (!msg)
18251                 return;
18252
18253         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18254         if (!hdr) {
18255                 nlmsg_free(msg);
18256                 return;
18257         }
18258
18259         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18260             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18261             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18262             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18263                 goto nla_put_failure;
18264
18265         genlmsg_end(msg, hdr);
18266
18267         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18268                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18269         return;
18270
18271  nla_put_failure:
18272         nlmsg_free(msg);
18273 }
18274 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18275
18276 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18277                                struct ieee80211_channel *chan,
18278                                unsigned int duration, gfp_t gfp)
18279 {
18280         struct wiphy *wiphy = wdev->wiphy;
18281         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18282
18283         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18284         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18285                                           rdev, wdev, cookie, chan,
18286                                           duration, gfp);
18287 }
18288 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18289
18290 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18291                                         struct ieee80211_channel *chan,
18292                                         gfp_t gfp)
18293 {
18294         struct wiphy *wiphy = wdev->wiphy;
18295         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18296
18297         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18298         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18299                                           rdev, wdev, cookie, chan, 0, gfp);
18300 }
18301 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18302
18303 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18304                                         struct ieee80211_channel *chan,
18305                                         gfp_t gfp)
18306 {
18307         struct wiphy *wiphy = wdev->wiphy;
18308         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18309
18310         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18311         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18312                                           rdev, wdev, cookie, chan, 0, gfp);
18313 }
18314 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18315
18316 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18317                       struct station_info *sinfo, gfp_t gfp)
18318 {
18319         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18320         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18321         struct sk_buff *msg;
18322
18323         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18324
18325         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18326         if (!msg)
18327                 return;
18328
18329         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18330                                  rdev, dev, mac_addr, sinfo) < 0) {
18331                 nlmsg_free(msg);
18332                 return;
18333         }
18334
18335         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18336                                 NL80211_MCGRP_MLME, gfp);
18337 }
18338 EXPORT_SYMBOL(cfg80211_new_sta);
18339
18340 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18341                             struct station_info *sinfo, gfp_t gfp)
18342 {
18343         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18344         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18345         struct sk_buff *msg;
18346         struct station_info empty_sinfo = {};
18347
18348         if (!sinfo)
18349                 sinfo = &empty_sinfo;
18350
18351         trace_cfg80211_del_sta(dev, mac_addr);
18352
18353         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18354         if (!msg) {
18355                 cfg80211_sinfo_release_content(sinfo);
18356                 return;
18357         }
18358
18359         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18360                                  rdev, dev, mac_addr, sinfo) < 0) {
18361                 nlmsg_free(msg);
18362                 return;
18363         }
18364
18365         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18366                                 NL80211_MCGRP_MLME, gfp);
18367 }
18368 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18369
18370 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18371                           enum nl80211_connect_failed_reason reason,
18372                           gfp_t gfp)
18373 {
18374         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18375         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18376         struct sk_buff *msg;
18377         void *hdr;
18378
18379         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18380         if (!msg)
18381                 return;
18382
18383         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18384         if (!hdr) {
18385                 nlmsg_free(msg);
18386                 return;
18387         }
18388
18389         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18390             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18391             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18392                 goto nla_put_failure;
18393
18394         genlmsg_end(msg, hdr);
18395
18396         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18397                                 NL80211_MCGRP_MLME, gfp);
18398         return;
18399
18400  nla_put_failure:
18401         nlmsg_free(msg);
18402 }
18403 EXPORT_SYMBOL(cfg80211_conn_failed);
18404
18405 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18406                                        const u8 *addr, gfp_t gfp)
18407 {
18408         struct wireless_dev *wdev = dev->ieee80211_ptr;
18409         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18410         struct sk_buff *msg;
18411         void *hdr;
18412         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18413
18414         if (!nlportid)
18415                 return false;
18416
18417         msg = nlmsg_new(100, gfp);
18418         if (!msg)
18419                 return true;
18420
18421         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18422         if (!hdr) {
18423                 nlmsg_free(msg);
18424                 return true;
18425         }
18426
18427         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18428             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18429             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18430                 goto nla_put_failure;
18431
18432         genlmsg_end(msg, hdr);
18433         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18434         return true;
18435
18436  nla_put_failure:
18437         nlmsg_free(msg);
18438         return true;
18439 }
18440
18441 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18442                                 const u8 *addr, gfp_t gfp)
18443 {
18444         struct wireless_dev *wdev = dev->ieee80211_ptr;
18445         bool ret;
18446
18447         trace_cfg80211_rx_spurious_frame(dev, addr);
18448
18449         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18450                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18451                 trace_cfg80211_return_bool(false);
18452                 return false;
18453         }
18454         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18455                                          addr, gfp);
18456         trace_cfg80211_return_bool(ret);
18457         return ret;
18458 }
18459 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18460
18461 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18462                                         const u8 *addr, gfp_t gfp)
18463 {
18464         struct wireless_dev *wdev = dev->ieee80211_ptr;
18465         bool ret;
18466
18467         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18468
18469         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18470                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18471                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18472                 trace_cfg80211_return_bool(false);
18473                 return false;
18474         }
18475         ret = __nl80211_unexpected_frame(dev,
18476                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18477                                          addr, gfp);
18478         trace_cfg80211_return_bool(ret);
18479         return ret;
18480 }
18481 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18482
18483 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18484                       struct wireless_dev *wdev, u32 nlportid,
18485                       struct cfg80211_rx_info *info, gfp_t gfp)
18486 {
18487         struct net_device *netdev = wdev->netdev;
18488         struct sk_buff *msg;
18489         void *hdr;
18490
18491         msg = nlmsg_new(100 + info->len, gfp);
18492         if (!msg)
18493                 return -ENOMEM;
18494
18495         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18496         if (!hdr) {
18497                 nlmsg_free(msg);
18498                 return -ENOMEM;
18499         }
18500
18501         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18502             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18503                                         netdev->ifindex)) ||
18504             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18505                               NL80211_ATTR_PAD) ||
18506             (info->have_link_id &&
18507              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18508             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18509             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18510             (info->sig_dbm &&
18511              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18512             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18513             (info->flags &&
18514              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18515             (info->rx_tstamp && nla_put_u64_64bit(msg,
18516                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18517                                                   info->rx_tstamp,
18518                                                   NL80211_ATTR_PAD)) ||
18519             (info->ack_tstamp && nla_put_u64_64bit(msg,
18520                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18521                                                    info->ack_tstamp,
18522                                                    NL80211_ATTR_PAD)))
18523                 goto nla_put_failure;
18524
18525         genlmsg_end(msg, hdr);
18526
18527         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18528
18529  nla_put_failure:
18530         nlmsg_free(msg);
18531         return -ENOBUFS;
18532 }
18533
18534 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18535                                     struct cfg80211_tx_status *status,
18536                                     gfp_t gfp, enum nl80211_commands command)
18537 {
18538         struct wiphy *wiphy = wdev->wiphy;
18539         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18540         struct net_device *netdev = wdev->netdev;
18541         struct sk_buff *msg;
18542         void *hdr;
18543
18544         if (command == NL80211_CMD_FRAME_TX_STATUS)
18545                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18546                                               status->ack);
18547         else
18548                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18549                                                       status->ack);
18550
18551         msg = nlmsg_new(100 + status->len, gfp);
18552         if (!msg)
18553                 return;
18554
18555         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18556         if (!hdr) {
18557                 nlmsg_free(msg);
18558                 return;
18559         }
18560
18561         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18562             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18563                                    netdev->ifindex)) ||
18564             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18565                               NL80211_ATTR_PAD) ||
18566             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18567             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18568                               NL80211_ATTR_PAD) ||
18569             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18570             (status->tx_tstamp &&
18571              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18572                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18573             (status->ack_tstamp &&
18574              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18575                                status->ack_tstamp, NL80211_ATTR_PAD)))
18576                 goto nla_put_failure;
18577
18578         genlmsg_end(msg, hdr);
18579
18580         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18581                                 NL80211_MCGRP_MLME, gfp);
18582         return;
18583
18584 nla_put_failure:
18585         nlmsg_free(msg);
18586 }
18587
18588 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18589                                      const u8 *buf, size_t len, bool ack,
18590                                      gfp_t gfp)
18591 {
18592         struct cfg80211_tx_status status = {
18593                 .cookie = cookie,
18594                 .buf = buf,
18595                 .len = len,
18596                 .ack = ack
18597         };
18598
18599         nl80211_frame_tx_status(wdev, &status, gfp,
18600                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18601 }
18602 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18603
18604 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18605                                  struct cfg80211_tx_status *status, gfp_t gfp)
18606 {
18607         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18608 }
18609 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18610
18611 static int __nl80211_rx_control_port(struct net_device *dev,
18612                                      struct sk_buff *skb,
18613                                      bool unencrypted, gfp_t gfp)
18614 {
18615         struct wireless_dev *wdev = dev->ieee80211_ptr;
18616         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18617         struct ethhdr *ehdr = eth_hdr(skb);
18618         const u8 *addr = ehdr->h_source;
18619         u16 proto = be16_to_cpu(skb->protocol);
18620         struct sk_buff *msg;
18621         void *hdr;
18622         struct nlattr *frame;
18623
18624         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18625
18626         if (!nlportid)
18627                 return -ENOENT;
18628
18629         msg = nlmsg_new(100 + skb->len, gfp);
18630         if (!msg)
18631                 return -ENOMEM;
18632
18633         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18634         if (!hdr) {
18635                 nlmsg_free(msg);
18636                 return -ENOBUFS;
18637         }
18638
18639         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18640             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18641             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18642                               NL80211_ATTR_PAD) ||
18643             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18644             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18645             (unencrypted && nla_put_flag(msg,
18646                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18647                 goto nla_put_failure;
18648
18649         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18650         if (!frame)
18651                 goto nla_put_failure;
18652
18653         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18654         genlmsg_end(msg, hdr);
18655
18656         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18657
18658  nla_put_failure:
18659         nlmsg_free(msg);
18660         return -ENOBUFS;
18661 }
18662
18663 bool cfg80211_rx_control_port(struct net_device *dev,
18664                               struct sk_buff *skb, bool unencrypted)
18665 {
18666         int ret;
18667
18668         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
18669         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
18670         trace_cfg80211_return_bool(ret == 0);
18671         return ret == 0;
18672 }
18673 EXPORT_SYMBOL(cfg80211_rx_control_port);
18674
18675 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
18676                                             const char *mac, gfp_t gfp)
18677 {
18678         struct wireless_dev *wdev = dev->ieee80211_ptr;
18679         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18680         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18681         void **cb;
18682
18683         if (!msg)
18684                 return NULL;
18685
18686         cb = (void **)msg->cb;
18687
18688         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
18689         if (!cb[0]) {
18690                 nlmsg_free(msg);
18691                 return NULL;
18692         }
18693
18694         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18695             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18696                 goto nla_put_failure;
18697
18698         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
18699                 goto nla_put_failure;
18700
18701         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
18702         if (!cb[1])
18703                 goto nla_put_failure;
18704
18705         cb[2] = rdev;
18706
18707         return msg;
18708  nla_put_failure:
18709         nlmsg_free(msg);
18710         return NULL;
18711 }
18712
18713 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
18714 {
18715         void **cb = (void **)msg->cb;
18716         struct cfg80211_registered_device *rdev = cb[2];
18717
18718         nla_nest_end(msg, cb[1]);
18719         genlmsg_end(msg, cb[0]);
18720
18721         memset(msg->cb, 0, sizeof(msg->cb));
18722
18723         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18724                                 NL80211_MCGRP_MLME, gfp);
18725 }
18726
18727 void cfg80211_cqm_rssi_notify(struct net_device *dev,
18728                               enum nl80211_cqm_rssi_threshold_event rssi_event,
18729                               s32 rssi_level, gfp_t gfp)
18730 {
18731         struct sk_buff *msg;
18732         struct wireless_dev *wdev = dev->ieee80211_ptr;
18733         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18734
18735         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
18736
18737         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
18738                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
18739                 return;
18740
18741         if (wdev->cqm_config) {
18742                 wdev->cqm_config->last_rssi_event_value = rssi_level;
18743
18744                 cfg80211_cqm_rssi_update(rdev, dev);
18745
18746                 if (rssi_level == 0)
18747                         rssi_level = wdev->cqm_config->last_rssi_event_value;
18748         }
18749
18750         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18751         if (!msg)
18752                 return;
18753
18754         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
18755                         rssi_event))
18756                 goto nla_put_failure;
18757
18758         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
18759                                       rssi_level))
18760                 goto nla_put_failure;
18761
18762         cfg80211_send_cqm(msg, gfp);
18763
18764         return;
18765
18766  nla_put_failure:
18767         nlmsg_free(msg);
18768 }
18769 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
18770
18771 void cfg80211_cqm_txe_notify(struct net_device *dev,
18772                              const u8 *peer, u32 num_packets,
18773                              u32 rate, u32 intvl, gfp_t gfp)
18774 {
18775         struct sk_buff *msg;
18776
18777         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18778         if (!msg)
18779                 return;
18780
18781         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
18782                 goto nla_put_failure;
18783
18784         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
18785                 goto nla_put_failure;
18786
18787         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
18788                 goto nla_put_failure;
18789
18790         cfg80211_send_cqm(msg, gfp);
18791         return;
18792
18793  nla_put_failure:
18794         nlmsg_free(msg);
18795 }
18796 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
18797
18798 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
18799                                  const u8 *peer, u32 num_packets, gfp_t gfp)
18800 {
18801         struct sk_buff *msg;
18802
18803         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
18804
18805         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18806         if (!msg)
18807                 return;
18808
18809         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
18810                 goto nla_put_failure;
18811
18812         cfg80211_send_cqm(msg, gfp);
18813         return;
18814
18815  nla_put_failure:
18816         nlmsg_free(msg);
18817 }
18818 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
18819
18820 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
18821 {
18822         struct sk_buff *msg;
18823
18824         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18825         if (!msg)
18826                 return;
18827
18828         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
18829                 goto nla_put_failure;
18830
18831         cfg80211_send_cqm(msg, gfp);
18832         return;
18833
18834  nla_put_failure:
18835         nlmsg_free(msg);
18836 }
18837 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
18838
18839 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
18840                                      struct net_device *netdev, const u8 *bssid,
18841                                      const u8 *replay_ctr, gfp_t gfp)
18842 {
18843         struct sk_buff *msg;
18844         struct nlattr *rekey_attr;
18845         void *hdr;
18846
18847         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18848         if (!msg)
18849                 return;
18850
18851         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
18852         if (!hdr) {
18853                 nlmsg_free(msg);
18854                 return;
18855         }
18856
18857         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18858             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18859             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18860                 goto nla_put_failure;
18861
18862         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
18863         if (!rekey_attr)
18864                 goto nla_put_failure;
18865
18866         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
18867                     NL80211_REPLAY_CTR_LEN, replay_ctr))
18868                 goto nla_put_failure;
18869
18870         nla_nest_end(msg, rekey_attr);
18871
18872         genlmsg_end(msg, hdr);
18873
18874         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18875                                 NL80211_MCGRP_MLME, gfp);
18876         return;
18877
18878  nla_put_failure:
18879         nlmsg_free(msg);
18880 }
18881
18882 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
18883                                const u8 *replay_ctr, gfp_t gfp)
18884 {
18885         struct wireless_dev *wdev = dev->ieee80211_ptr;
18886         struct wiphy *wiphy = wdev->wiphy;
18887         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18888
18889         trace_cfg80211_gtk_rekey_notify(dev, bssid);
18890         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
18891 }
18892 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
18893
18894 static void
18895 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
18896                                struct net_device *netdev, int index,
18897                                const u8 *bssid, bool preauth, gfp_t gfp)
18898 {
18899         struct sk_buff *msg;
18900         struct nlattr *attr;
18901         void *hdr;
18902
18903         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18904         if (!msg)
18905                 return;
18906
18907         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
18908         if (!hdr) {
18909                 nlmsg_free(msg);
18910                 return;
18911         }
18912
18913         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18914             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18915                 goto nla_put_failure;
18916
18917         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
18918         if (!attr)
18919                 goto nla_put_failure;
18920
18921         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
18922             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
18923             (preauth &&
18924              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
18925                 goto nla_put_failure;
18926
18927         nla_nest_end(msg, attr);
18928
18929         genlmsg_end(msg, hdr);
18930
18931         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18932                                 NL80211_MCGRP_MLME, gfp);
18933         return;
18934
18935  nla_put_failure:
18936         nlmsg_free(msg);
18937 }
18938
18939 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
18940                                      const u8 *bssid, bool preauth, gfp_t gfp)
18941 {
18942         struct wireless_dev *wdev = dev->ieee80211_ptr;
18943         struct wiphy *wiphy = wdev->wiphy;
18944         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18945
18946         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
18947         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
18948 }
18949 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
18950
18951 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
18952                                      struct net_device *netdev,
18953                                      unsigned int link_id,
18954                                      struct cfg80211_chan_def *chandef,
18955                                      gfp_t gfp,
18956                                      enum nl80211_commands notif,
18957                                      u8 count, bool quiet)
18958 {
18959         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18960         struct sk_buff *msg;
18961         void *hdr;
18962
18963         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18964         if (!msg)
18965                 return;
18966
18967         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
18968         if (!hdr) {
18969                 nlmsg_free(msg);
18970                 return;
18971         }
18972
18973         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18974                 goto nla_put_failure;
18975
18976         if (wdev->valid_links &&
18977             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18978                 goto nla_put_failure;
18979
18980         if (nl80211_send_chandef(msg, chandef))
18981                 goto nla_put_failure;
18982
18983         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
18984                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
18985                         goto nla_put_failure;
18986                 if (quiet &&
18987                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
18988                         goto nla_put_failure;
18989         }
18990
18991         genlmsg_end(msg, hdr);
18992
18993         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18994                                 NL80211_MCGRP_MLME, gfp);
18995         return;
18996
18997  nla_put_failure:
18998         nlmsg_free(msg);
18999 }
19000
19001 void cfg80211_ch_switch_notify(struct net_device *dev,
19002                                struct cfg80211_chan_def *chandef,
19003                                unsigned int link_id)
19004 {
19005         struct wireless_dev *wdev = dev->ieee80211_ptr;
19006         struct wiphy *wiphy = wdev->wiphy;
19007         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19008
19009         ASSERT_WDEV_LOCK(wdev);
19010         WARN_INVALID_LINK_ID(wdev, link_id);
19011
19012         trace_cfg80211_ch_switch_notify(dev, chandef, link_id);
19013
19014         switch (wdev->iftype) {
19015         case NL80211_IFTYPE_STATION:
19016         case NL80211_IFTYPE_P2P_CLIENT:
19017                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19018                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19019                                                         chandef->chan);
19020                 break;
19021         case NL80211_IFTYPE_MESH_POINT:
19022                 wdev->u.mesh.chandef = *chandef;
19023                 wdev->u.mesh.preset_chandef = *chandef;
19024                 break;
19025         case NL80211_IFTYPE_AP:
19026         case NL80211_IFTYPE_P2P_GO:
19027                 wdev->links[link_id].ap.chandef = *chandef;
19028                 break;
19029         case NL80211_IFTYPE_ADHOC:
19030                 wdev->u.ibss.chandef = *chandef;
19031                 break;
19032         default:
19033                 WARN_ON(1);
19034                 break;
19035         }
19036
19037         cfg80211_sched_dfs_chan_update(rdev);
19038
19039         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19040                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
19041 }
19042 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19043
19044 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19045                                        struct cfg80211_chan_def *chandef,
19046                                        unsigned int link_id, u8 count,
19047                                        bool quiet)
19048 {
19049         struct wireless_dev *wdev = dev->ieee80211_ptr;
19050         struct wiphy *wiphy = wdev->wiphy;
19051         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19052
19053         ASSERT_WDEV_LOCK(wdev);
19054         WARN_INVALID_LINK_ID(wdev, link_id);
19055
19056         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id);
19057
19058         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19059                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19060                                  count, quiet);
19061 }
19062 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19063
19064 int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
19065                               enum nl80211_commands cmd, u8 count,
19066                               u64 color_bitmap)
19067 {
19068         struct wireless_dev *wdev = dev->ieee80211_ptr;
19069         struct wiphy *wiphy = wdev->wiphy;
19070         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19071         struct sk_buff *msg;
19072         void *hdr;
19073
19074         ASSERT_WDEV_LOCK(wdev);
19075
19076         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19077
19078         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19079         if (!msg)
19080                 return -ENOMEM;
19081
19082         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19083         if (!hdr)
19084                 goto nla_put_failure;
19085
19086         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19087                 goto nla_put_failure;
19088
19089         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19090             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19091                 goto nla_put_failure;
19092
19093         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19094             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19095                               color_bitmap, NL80211_ATTR_PAD))
19096                 goto nla_put_failure;
19097
19098         genlmsg_end(msg, hdr);
19099
19100         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19101                                        msg, 0, NL80211_MCGRP_MLME, gfp);
19102
19103 nla_put_failure:
19104         nlmsg_free(msg);
19105         return -EINVAL;
19106 }
19107 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19108
19109 void
19110 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19111                      const struct cfg80211_chan_def *chandef,
19112                      enum nl80211_radar_event event,
19113                      struct net_device *netdev, gfp_t gfp)
19114 {
19115         struct sk_buff *msg;
19116         void *hdr;
19117
19118         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19119         if (!msg)
19120                 return;
19121
19122         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19123         if (!hdr) {
19124                 nlmsg_free(msg);
19125                 return;
19126         }
19127
19128         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19129                 goto nla_put_failure;
19130
19131         /* NOP and radar events don't need a netdev parameter */
19132         if (netdev) {
19133                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19134
19135                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19136                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19137                                       NL80211_ATTR_PAD))
19138                         goto nla_put_failure;
19139         }
19140
19141         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19142                 goto nla_put_failure;
19143
19144         if (nl80211_send_chandef(msg, chandef))
19145                 goto nla_put_failure;
19146
19147         genlmsg_end(msg, hdr);
19148
19149         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19150                                 NL80211_MCGRP_MLME, gfp);
19151         return;
19152
19153  nla_put_failure:
19154         nlmsg_free(msg);
19155 }
19156
19157 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19158                                        struct sta_opmode_info *sta_opmode,
19159                                        gfp_t gfp)
19160 {
19161         struct sk_buff *msg;
19162         struct wireless_dev *wdev = dev->ieee80211_ptr;
19163         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19164         void *hdr;
19165
19166         if (WARN_ON(!mac))
19167                 return;
19168
19169         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19170         if (!msg)
19171                 return;
19172
19173         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19174         if (!hdr) {
19175                 nlmsg_free(msg);
19176                 return;
19177         }
19178
19179         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19180                 goto nla_put_failure;
19181
19182         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19183                 goto nla_put_failure;
19184
19185         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19186                 goto nla_put_failure;
19187
19188         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19189             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19190                 goto nla_put_failure;
19191
19192         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19193             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19194                 goto nla_put_failure;
19195
19196         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19197             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19198                 goto nla_put_failure;
19199
19200         genlmsg_end(msg, hdr);
19201
19202         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19203                                 NL80211_MCGRP_MLME, gfp);
19204
19205         return;
19206
19207 nla_put_failure:
19208         nlmsg_free(msg);
19209 }
19210 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19211
19212 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19213                            u64 cookie, bool acked, s32 ack_signal,
19214                            bool is_valid_ack_signal, gfp_t gfp)
19215 {
19216         struct wireless_dev *wdev = dev->ieee80211_ptr;
19217         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19218         struct sk_buff *msg;
19219         void *hdr;
19220
19221         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19222
19223         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19224
19225         if (!msg)
19226                 return;
19227
19228         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19229         if (!hdr) {
19230                 nlmsg_free(msg);
19231                 return;
19232         }
19233
19234         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19235             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19236             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19237             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19238                               NL80211_ATTR_PAD) ||
19239             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19240             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19241                                                 ack_signal)))
19242                 goto nla_put_failure;
19243
19244         genlmsg_end(msg, hdr);
19245
19246         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19247                                 NL80211_MCGRP_MLME, gfp);
19248         return;
19249
19250  nla_put_failure:
19251         nlmsg_free(msg);
19252 }
19253 EXPORT_SYMBOL(cfg80211_probe_status);
19254
19255 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19256                                      size_t len, int freq, int sig_dbm)
19257 {
19258         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19259         struct sk_buff *msg;
19260         void *hdr;
19261         struct cfg80211_beacon_registration *reg;
19262
19263         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19264
19265         spin_lock_bh(&rdev->beacon_registrations_lock);
19266         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19267                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19268                 if (!msg) {
19269                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19270                         return;
19271                 }
19272
19273                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19274                 if (!hdr)
19275                         goto nla_put_failure;
19276
19277                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19278                     (freq &&
19279                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19280                                   KHZ_TO_MHZ(freq)) ||
19281                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19282                                   freq % 1000))) ||
19283                     (sig_dbm &&
19284                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19285                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19286                         goto nla_put_failure;
19287
19288                 genlmsg_end(msg, hdr);
19289
19290                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19291         }
19292         spin_unlock_bh(&rdev->beacon_registrations_lock);
19293         return;
19294
19295  nla_put_failure:
19296         spin_unlock_bh(&rdev->beacon_registrations_lock);
19297         nlmsg_free(msg);
19298 }
19299 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19300
19301 #ifdef CONFIG_PM
19302 static int cfg80211_net_detect_results(struct sk_buff *msg,
19303                                        struct cfg80211_wowlan_wakeup *wakeup)
19304 {
19305         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19306         struct nlattr *nl_results, *nl_match, *nl_freqs;
19307         int i, j;
19308
19309         nl_results = nla_nest_start_noflag(msg,
19310                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19311         if (!nl_results)
19312                 return -EMSGSIZE;
19313
19314         for (i = 0; i < nd->n_matches; i++) {
19315                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19316
19317                 nl_match = nla_nest_start_noflag(msg, i);
19318                 if (!nl_match)
19319                         break;
19320
19321                 /* The SSID attribute is optional in nl80211, but for
19322                  * simplicity reasons it's always present in the
19323                  * cfg80211 structure.  If a driver can't pass the
19324                  * SSID, that needs to be changed.  A zero length SSID
19325                  * is still a valid SSID (wildcard), so it cannot be
19326                  * used for this purpose.
19327                  */
19328                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19329                             match->ssid.ssid)) {
19330                         nla_nest_cancel(msg, nl_match);
19331                         goto out;
19332                 }
19333
19334                 if (match->n_channels) {
19335                         nl_freqs = nla_nest_start_noflag(msg,
19336                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19337                         if (!nl_freqs) {
19338                                 nla_nest_cancel(msg, nl_match);
19339                                 goto out;
19340                         }
19341
19342                         for (j = 0; j < match->n_channels; j++) {
19343                                 if (nla_put_u32(msg, j, match->channels[j])) {
19344                                         nla_nest_cancel(msg, nl_freqs);
19345                                         nla_nest_cancel(msg, nl_match);
19346                                         goto out;
19347                                 }
19348                         }
19349
19350                         nla_nest_end(msg, nl_freqs);
19351                 }
19352
19353                 nla_nest_end(msg, nl_match);
19354         }
19355
19356 out:
19357         nla_nest_end(msg, nl_results);
19358         return 0;
19359 }
19360
19361 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19362                                    struct cfg80211_wowlan_wakeup *wakeup,
19363                                    gfp_t gfp)
19364 {
19365         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19366         struct sk_buff *msg;
19367         void *hdr;
19368         int size = 200;
19369
19370         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19371
19372         if (wakeup)
19373                 size += wakeup->packet_present_len;
19374
19375         msg = nlmsg_new(size, gfp);
19376         if (!msg)
19377                 return;
19378
19379         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19380         if (!hdr)
19381                 goto free_msg;
19382
19383         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19384             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19385                               NL80211_ATTR_PAD))
19386                 goto free_msg;
19387
19388         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19389                                         wdev->netdev->ifindex))
19390                 goto free_msg;
19391
19392         if (wakeup) {
19393                 struct nlattr *reasons;
19394
19395                 reasons = nla_nest_start_noflag(msg,
19396                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19397                 if (!reasons)
19398                         goto free_msg;
19399
19400                 if (wakeup->disconnect &&
19401                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19402                         goto free_msg;
19403                 if (wakeup->magic_pkt &&
19404                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19405                         goto free_msg;
19406                 if (wakeup->gtk_rekey_failure &&
19407                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19408                         goto free_msg;
19409                 if (wakeup->eap_identity_req &&
19410                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19411                         goto free_msg;
19412                 if (wakeup->four_way_handshake &&
19413                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19414                         goto free_msg;
19415                 if (wakeup->rfkill_release &&
19416                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19417                         goto free_msg;
19418
19419                 if (wakeup->pattern_idx >= 0 &&
19420                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19421                                 wakeup->pattern_idx))
19422                         goto free_msg;
19423
19424                 if (wakeup->tcp_match &&
19425                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19426                         goto free_msg;
19427
19428                 if (wakeup->tcp_connlost &&
19429                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19430                         goto free_msg;
19431
19432                 if (wakeup->tcp_nomoretokens &&
19433                     nla_put_flag(msg,
19434                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19435                         goto free_msg;
19436
19437                 if (wakeup->packet) {
19438                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19439                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19440
19441                         if (!wakeup->packet_80211) {
19442                                 pkt_attr =
19443                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19444                                 len_attr =
19445                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19446                         }
19447
19448                         if (wakeup->packet_len &&
19449                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19450                                 goto free_msg;
19451
19452                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19453                                     wakeup->packet))
19454                                 goto free_msg;
19455                 }
19456
19457                 if (wakeup->net_detect &&
19458                     cfg80211_net_detect_results(msg, wakeup))
19459                                 goto free_msg;
19460
19461                 nla_nest_end(msg, reasons);
19462         }
19463
19464         genlmsg_end(msg, hdr);
19465
19466         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19467                                 NL80211_MCGRP_MLME, gfp);
19468         return;
19469
19470  free_msg:
19471         nlmsg_free(msg);
19472 }
19473 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19474 #endif
19475
19476 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19477                                 enum nl80211_tdls_operation oper,
19478                                 u16 reason_code, gfp_t gfp)
19479 {
19480         struct wireless_dev *wdev = dev->ieee80211_ptr;
19481         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19482         struct sk_buff *msg;
19483         void *hdr;
19484
19485         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19486                                          reason_code);
19487
19488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19489         if (!msg)
19490                 return;
19491
19492         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19493         if (!hdr) {
19494                 nlmsg_free(msg);
19495                 return;
19496         }
19497
19498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19499             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19500             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19501             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19502             (reason_code > 0 &&
19503              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19504                 goto nla_put_failure;
19505
19506         genlmsg_end(msg, hdr);
19507
19508         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19509                                 NL80211_MCGRP_MLME, gfp);
19510         return;
19511
19512  nla_put_failure:
19513         nlmsg_free(msg);
19514 }
19515 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19516
19517 static int nl80211_netlink_notify(struct notifier_block * nb,
19518                                   unsigned long state,
19519                                   void *_notify)
19520 {
19521         struct netlink_notify *notify = _notify;
19522         struct cfg80211_registered_device *rdev;
19523         struct wireless_dev *wdev;
19524         struct cfg80211_beacon_registration *reg, *tmp;
19525
19526         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19527                 return NOTIFY_DONE;
19528
19529         rcu_read_lock();
19530
19531         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19532                 struct cfg80211_sched_scan_request *sched_scan_req;
19533
19534                 list_for_each_entry_rcu(sched_scan_req,
19535                                         &rdev->sched_scan_req_list,
19536                                         list) {
19537                         if (sched_scan_req->owner_nlportid == notify->portid) {
19538                                 sched_scan_req->nl_owner_dead = true;
19539                                 schedule_work(&rdev->sched_scan_stop_wk);
19540                         }
19541                 }
19542
19543                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19544                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19545
19546                         if (wdev->owner_nlportid == notify->portid) {
19547                                 wdev->nl_owner_dead = true;
19548                                 schedule_work(&rdev->destroy_work);
19549                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19550                                 schedule_work(&wdev->disconnect_wk);
19551                         }
19552
19553                         cfg80211_release_pmsr(wdev, notify->portid);
19554                 }
19555
19556                 spin_lock_bh(&rdev->beacon_registrations_lock);
19557                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19558                                          list) {
19559                         if (reg->nlportid == notify->portid) {
19560                                 list_del(&reg->list);
19561                                 kfree(reg);
19562                                 break;
19563                         }
19564                 }
19565                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19566         }
19567
19568         rcu_read_unlock();
19569
19570         /*
19571          * It is possible that the user space process that is controlling the
19572          * indoor setting disappeared, so notify the regulatory core.
19573          */
19574         regulatory_netlink_notify(notify->portid);
19575         return NOTIFY_OK;
19576 }
19577
19578 static struct notifier_block nl80211_netlink_notifier = {
19579         .notifier_call = nl80211_netlink_notify,
19580 };
19581
19582 void cfg80211_ft_event(struct net_device *netdev,
19583                        struct cfg80211_ft_event_params *ft_event)
19584 {
19585         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19586         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19587         struct sk_buff *msg;
19588         void *hdr;
19589
19590         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19591
19592         if (!ft_event->target_ap)
19593                 return;
19594
19595         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19596                         GFP_KERNEL);
19597         if (!msg)
19598                 return;
19599
19600         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19601         if (!hdr)
19602                 goto out;
19603
19604         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19605             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19606             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19607                 goto out;
19608
19609         if (ft_event->ies &&
19610             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19611                 goto out;
19612         if (ft_event->ric_ies &&
19613             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19614                     ft_event->ric_ies))
19615                 goto out;
19616
19617         genlmsg_end(msg, hdr);
19618
19619         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19620                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19621         return;
19622  out:
19623         nlmsg_free(msg);
19624 }
19625 EXPORT_SYMBOL(cfg80211_ft_event);
19626
19627 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19628 {
19629         struct cfg80211_registered_device *rdev;
19630         struct sk_buff *msg;
19631         void *hdr;
19632         u32 nlportid;
19633
19634         rdev = wiphy_to_rdev(wdev->wiphy);
19635         if (!rdev->crit_proto_nlportid)
19636                 return;
19637
19638         nlportid = rdev->crit_proto_nlportid;
19639         rdev->crit_proto_nlportid = 0;
19640
19641         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19642         if (!msg)
19643                 return;
19644
19645         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19646         if (!hdr)
19647                 goto nla_put_failure;
19648
19649         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19650             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19651                               NL80211_ATTR_PAD))
19652                 goto nla_put_failure;
19653
19654         genlmsg_end(msg, hdr);
19655
19656         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19657         return;
19658
19659  nla_put_failure:
19660         nlmsg_free(msg);
19661 }
19662 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
19663
19664 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
19665 {
19666         struct wiphy *wiphy = wdev->wiphy;
19667         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19668         struct sk_buff *msg;
19669         void *hdr;
19670
19671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19672         if (!msg)
19673                 return;
19674
19675         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
19676         if (!hdr)
19677                 goto out;
19678
19679         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19680             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
19681             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19682                               NL80211_ATTR_PAD))
19683                 goto out;
19684
19685         genlmsg_end(msg, hdr);
19686
19687         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
19688                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19689         return;
19690  out:
19691         nlmsg_free(msg);
19692 }
19693
19694 int cfg80211_external_auth_request(struct net_device *dev,
19695                                    struct cfg80211_external_auth_params *params,
19696                                    gfp_t gfp)
19697 {
19698         struct wireless_dev *wdev = dev->ieee80211_ptr;
19699         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19700         struct sk_buff *msg;
19701         void *hdr;
19702
19703         if (!wdev->conn_owner_nlportid)
19704                 return -EINVAL;
19705
19706         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19707         if (!msg)
19708                 return -ENOMEM;
19709
19710         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
19711         if (!hdr)
19712                 goto nla_put_failure;
19713
19714         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19715             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19716             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
19717             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
19718                         params->action) ||
19719             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
19720             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
19721                     params->ssid.ssid))
19722                 goto nla_put_failure;
19723
19724         genlmsg_end(msg, hdr);
19725         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
19726                         wdev->conn_owner_nlportid);
19727         return 0;
19728
19729  nla_put_failure:
19730         nlmsg_free(msg);
19731         return -ENOBUFS;
19732 }
19733 EXPORT_SYMBOL(cfg80211_external_auth_request);
19734
19735 void cfg80211_update_owe_info_event(struct net_device *netdev,
19736                                     struct cfg80211_update_owe_info *owe_info,
19737                                     gfp_t gfp)
19738 {
19739         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19740         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19741         struct sk_buff *msg;
19742         void *hdr;
19743
19744         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
19745
19746         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19747         if (!msg)
19748                 return;
19749
19750         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
19751         if (!hdr)
19752                 goto nla_put_failure;
19753
19754         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19755             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19756             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
19757                 goto nla_put_failure;
19758
19759         if (!owe_info->ie_len ||
19760             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
19761                 goto nla_put_failure;
19762
19763         genlmsg_end(msg, hdr);
19764
19765         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19766                                 NL80211_MCGRP_MLME, gfp);
19767         return;
19768
19769 nla_put_failure:
19770         genlmsg_cancel(msg, hdr);
19771         nlmsg_free(msg);
19772 }
19773 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
19774
19775 /* initialisation/exit functions */
19776
19777 int __init nl80211_init(void)
19778 {
19779         int err;
19780
19781         err = genl_register_family(&nl80211_fam);
19782         if (err)
19783                 return err;
19784
19785         err = netlink_register_notifier(&nl80211_netlink_notifier);
19786         if (err)
19787                 goto err_out;
19788
19789         return 0;
19790  err_out:
19791         genl_unregister_family(&nl80211_fam);
19792         return err;
19793 }
19794
19795 void nl80211_exit(void)
19796 {
19797         netlink_unregister_notifier(&nl80211_netlink_notifier);
19798         genl_unregister_family(&nl80211_fam);
19799 }