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) 2018-2021 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 /* policy for the attributes */
 289 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 290
 291 static const struct nla_policy
 292 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 293         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 294         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 295                                         .len = U8_MAX },
 296         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 297                                              .len = U8_MAX },
 298 };
 299
 300 static const struct nla_policy
 301 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 302         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 303         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 304         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 305                 NLA_POLICY_MAX(NLA_U8, 15),
 306         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 307         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 308                 NLA_POLICY_MAX(NLA_U8, 15),
 309         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 310                 NLA_POLICY_MAX(NLA_U8, 31),
 311         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 312         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 313         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 314         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 315         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 316         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 317 };
 318
 319 static const struct nla_policy
 320 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 321         [NL80211_PMSR_TYPE_FTM] =
 322                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 323 };
 324
 325 static const struct nla_policy
 326 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 327         [NL80211_PMSR_REQ_ATTR_DATA] =
 328                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 329         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy
 333 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 334         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 335         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 336         [NL80211_PMSR_PEER_ATTR_REQ] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 338         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 344         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 345         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 346         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 347         [NL80211_PMSR_ATTR_PEERS] =
 348                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 349 };
 350
 351 static const struct nla_policy
 352 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 353         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 354                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 355         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 356                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 357         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 358                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 359         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 360                 NLA_POLICY_EXACT_LEN(8),
 361         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 362                 NLA_POLICY_EXACT_LEN(8),
 363         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 364 };
 365
 366 static const struct nla_policy
 367 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 368         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 369         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 370         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 371 };
 372
 373 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 374         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 375                                     .len = NL80211_MAX_SUPP_RATES },
 376         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 377                                 .len = NL80211_MAX_SUPP_HT_RATES },
 378         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 379         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 380         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 381         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 382                                                    NL80211_RATE_INFO_HE_GI_0_8,
 383                                                    NL80211_RATE_INFO_HE_GI_3_2),
 384         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 385                                                    NL80211_RATE_INFO_HE_1XLTF,
 386                                                    NL80211_RATE_INFO_HE_4XLTF),
 387 };
 388
 389 static const struct nla_policy
 390 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 391         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 392         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 393         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 394         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 395         [NL80211_TID_CONFIG_ATTR_NOACK] =
 396                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 397         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 398         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 399         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 400                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 401         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 402                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 403         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 404                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 405         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 407         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 408                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 409 };
 410
 411 static const struct nla_policy
 412 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 413         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 414         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 415         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 416                         NLA_POLICY_RANGE(NLA_BINARY,
 417                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 418                                          IEEE80211_MAX_DATA_LEN),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 423         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 424         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 425                                                        .len = IEEE80211_MAX_DATA_LEN }
 426 };
 427
 428 static const struct nla_policy
 429 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 430         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 431         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 432 };
 433
 434 static const struct nla_policy
 435 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 436         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 437         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 438 };
 439
 440 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 441         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 442         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 443         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 444                                       .len = 20-1 },
 445         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 446
 447         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 448         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 449         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 450                                                 NL80211_EDMG_CHANNELS_MIN,
 451                                                 NL80211_EDMG_CHANNELS_MAX),
 452         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 453                                                 NL80211_EDMG_BW_CONFIG_MIN,
 454                                                 NL80211_EDMG_BW_CONFIG_MAX),
 455
 456         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 457         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 458         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 459         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 460
 461         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 462         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 463         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 464         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 465         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 466         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 467
 468         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 469         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 470         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 471
 472         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 473         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 474
 475         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 476         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 477                                     .len = WLAN_MAX_KEY_LEN },
 478         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 479         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 480         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 481         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 482         [NL80211_ATTR_KEY_TYPE] =
 483                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 484
 485         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 486         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 487         [NL80211_ATTR_BEACON_HEAD] =
 488                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 489                                        IEEE80211_MAX_DATA_LEN),
 490         [NL80211_ATTR_BEACON_TAIL] =
 491                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 492                                        IEEE80211_MAX_DATA_LEN),
 493         [NL80211_ATTR_STA_AID] =
 494                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 495         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 496         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 497         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 498                                                .len = NL80211_MAX_SUPP_RATES },
 499         [NL80211_ATTR_STA_PLINK_ACTION] =
 500                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 501         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 502                 NLA_POLICY_RANGE(NLA_U8,
 503                                  NL80211_TX_POWER_AUTOMATIC,
 504                                  NL80211_TX_POWER_FIXED),
 505         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 506         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 507         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 508         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 509                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 510         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 511
 512         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 513         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 514         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 515
 516         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 517         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 518         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 519         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 520                                            .len = NL80211_MAX_SUPP_RATES },
 521         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 522
 523         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 524         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 525
 526         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 527
 528         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 529         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 530                                                    validate_ie_attr,
 531                                                    IEEE80211_MAX_DATA_LEN),
 532         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 533         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 534
 535         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 536                                 .len = IEEE80211_MAX_SSID_LEN },
 537         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 538         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 539         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 540         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 541         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 542                                                   NL80211_MFP_NO,
 543                                                   NL80211_MFP_OPTIONAL),
 544         [NL80211_ATTR_STA_FLAGS2] = {
 545                 .len = sizeof(struct nl80211_sta_flag_update),
 546         },
 547         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 548         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 549         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 550         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 551         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 552         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 553         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 554         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 555         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 556         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 557         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 558         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 559         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 560         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 561         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 562                                  .len = IEEE80211_MAX_DATA_LEN },
 563         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 564         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 565                                                    NL80211_PS_DISABLED,
 566                                                    NL80211_PS_ENABLED),
 567         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 568         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 570         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 571         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 572         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 573         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 574         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 575         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 576         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 577         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 578         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 579         [NL80211_ATTR_STA_PLINK_STATE] =
 580                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 581         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 582         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 583         [NL80211_ATTR_MESH_PEER_AID] =
 584                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 585         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 586         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 587         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 588         [NL80211_ATTR_HIDDEN_SSID] =
 589                 NLA_POLICY_RANGE(NLA_U32,
 590                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 591                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 592         [NL80211_ATTR_IE_PROBE_RESP] =
 593                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 594                                        IEEE80211_MAX_DATA_LEN),
 595         [NL80211_ATTR_IE_ASSOC_RESP] =
 596                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 597                                        IEEE80211_MAX_DATA_LEN),
 598         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 600         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 601         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 602         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 603         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 604         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 605         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 606         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 608         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 609                                       .len = IEEE80211_MAX_DATA_LEN },
 610         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 611         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 612         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 613                 .len = NL80211_HT_CAPABILITY_LEN
 614         },
 615         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 616         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 617         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 618         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 619         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 620
 621         /* need to include at least Auth Transaction and Status Code */
 622         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 623
 624         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 625         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 626         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 627         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 628         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 629                 NLA_POLICY_RANGE(NLA_U32,
 630                                  NL80211_MESH_POWER_UNKNOWN + 1,
 631                                  NL80211_MESH_POWER_MAX),
 632         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 633         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 634         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 635         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 636         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 637         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 638         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 639                 .len = NL80211_VHT_CAPABILITY_LEN,
 640         },
 641         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 642         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 643                                   .len = IEEE80211_MAX_DATA_LEN },
 644         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 645         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 646                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 647         [NL80211_ATTR_PEER_AID] =
 648                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 649         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 650         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 651         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 652         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 653         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 654         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 655         /*
 656          * The value of the Length field of the Supported Operating
 657          * Classes element is between 2 and 253.
 658          */
 659         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 660                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 661         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 662         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 663         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 664         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 665         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 666         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 667                                                   IEEE80211_QOS_MAP_LEN_MIN,
 668                                                   IEEE80211_QOS_MAP_LEN_MAX),
 669         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 670         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 671         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 672         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 673         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 674         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 675         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 676         [NL80211_ATTR_USER_PRIO] =
 677                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 678         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 679         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 680         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 681         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 682         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 683         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 684         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 685         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 686         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 687         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 688         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 689                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 690         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 691                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 692         },
 693         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 694         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 695         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 696         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 697         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 698                                     .len = FILS_MAX_KEK_LEN },
 699         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 700         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 701         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 702         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 703         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 704                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 705         },
 706         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 707         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 708                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 709         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 710                                           .len = FILS_ERP_MAX_REALM_LEN },
 711         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 712         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 713                                         .len = FILS_ERP_MAX_RRK_LEN },
 714         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 715         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 716         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 717         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 718         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 719
 720         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 721         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 722         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 723         [NL80211_ATTR_HE_CAPABILITY] =
 724                 NLA_POLICY_RANGE(NLA_BINARY,
 725                                  NL80211_HE_MIN_CAPABILITY_LEN,
 726                                  NL80211_HE_MAX_CAPABILITY_LEN),
 727         [NL80211_ATTR_FTM_RESPONDER] =
 728                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 729         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 730         [NL80211_ATTR_PEER_MEASUREMENTS] =
 731                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 732         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 733         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 734                                         .len = SAE_PASSWORD_MAX_LEN },
 735         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 736         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 737         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 738         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 739         [NL80211_ATTR_TID_CONFIG] =
 740                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 741         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 742         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 743         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 744         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 745         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 746         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 747         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 748                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 749         [NL80211_ATTR_FILS_DISCOVERY] =
 750                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 751         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 752                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 753         [NL80211_ATTR_S1G_CAPABILITY] =
 754                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 755         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 756                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 757         [NL80211_ATTR_SAE_PWE] =
 758                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 759                                  NL80211_SAE_PWE_BOTH),
 760         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 761         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 762         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 763         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 764         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 765         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 766         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 767 };
 768
 769 /* policy for the key attributes */
 770 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 771         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 772         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 773         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 774         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 775         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 776         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 777         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 778         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 779         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 780 };
 781
 782 /* policy for the key default flags */
 783 static const struct nla_policy
 784 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 785         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 786         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 787 };
 788
 789 #ifdef CONFIG_PM
 790 /* policy for WoWLAN attributes */
 791 static const struct nla_policy
 792 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 793         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 794         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 795         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 796         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 797         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 798         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 799         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 800         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 801         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 802         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 803 };
 804
 805 static const struct nla_policy
 806 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 807         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 808         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 809         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 810         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 811         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 812         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 813         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 814                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 815         },
 816         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 817                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 818         },
 819         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 820         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 821         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 822 };
 823 #endif /* CONFIG_PM */
 824
 825 /* policy for coalesce rule attributes */
 826 static const struct nla_policy
 827 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 828         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 829         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 830                 NLA_POLICY_RANGE(NLA_U32,
 831                                  NL80211_COALESCE_CONDITION_MATCH,
 832                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 833         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 834 };
 835
 836 /* policy for GTK rekey offload attributes */
 837 static const struct nla_policy
 838 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 839         [NL80211_REKEY_DATA_KEK] = {
 840                 .type = NLA_BINARY,
 841                 .len = NL80211_KEK_EXT_LEN
 842         },
 843         [NL80211_REKEY_DATA_KCK] = {
 844                 .type = NLA_BINARY,
 845                 .len = NL80211_KCK_EXT_LEN
 846         },
 847         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 848         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 849 };
 850
 851 static const struct nla_policy
 852 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 853         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 854         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 855         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 856         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 857 };
 858
 859 static const struct nla_policy
 860 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 861         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 862                                                  .len = IEEE80211_MAX_SSID_LEN },
 863         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 864         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 865         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 866                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 867 };
 868
 869 static const struct nla_policy
 870 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 871         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 872         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 873 };
 874
 875 static const struct nla_policy
 876 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 877         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 878         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 879         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 880                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 881         },
 882 };
 883
 884 /* policy for NAN function attributes */
 885 static const struct nla_policy
 886 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 887         [NL80211_NAN_FUNC_TYPE] =
 888                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 889         [NL80211_NAN_FUNC_SERVICE_ID] = {
 890                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 891         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 892         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 893         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 894         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 895         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 896         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 897         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 898         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 899         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 900                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 901         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 902         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 903         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 904         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 905         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 906 };
 907
 908 /* policy for Service Response Filter attributes */
 909 static const struct nla_policy
 910 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 911         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 912         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 913                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 914         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 915         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 916 };
 917
 918 /* policy for packet pattern attributes */
 919 static const struct nla_policy
 920 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 921         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 922         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 923         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 924 };
 925
 926 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 927                                      struct cfg80211_registered_device **rdev,
 928                                      struct wireless_dev **wdev,
 929                                      struct nlattr **attrbuf)
 930 {
 931         int err;
 932
 933         if (!cb->args[0]) {
 934                 struct nlattr **attrbuf_free = NULL;
 935
 936                 if (!attrbuf) {
 937                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 938                                           GFP_KERNEL);
 939                         if (!attrbuf)
 940                                 return -ENOMEM;
 941                         attrbuf_free = attrbuf;
 942                 }
 943
 944                 err = nlmsg_parse_deprecated(cb->nlh,
 945                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 946                                              attrbuf, nl80211_fam.maxattr,
 947                                              nl80211_policy, NULL);
 948                 if (err) {
 949                         kfree(attrbuf_free);
 950                         return err;
 951                 }
 952
 953                 rtnl_lock();
 954                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 955                                                    attrbuf);
 956                 kfree(attrbuf_free);
 957                 if (IS_ERR(*wdev)) {
 958                         rtnl_unlock();
 959                         return PTR_ERR(*wdev);
 960                 }
 961                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 962                 mutex_lock(&(*rdev)->wiphy.mtx);
 963                 rtnl_unlock();
 964                 /* 0 is the first index - add 1 to parse only once */
 965                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 966                 cb->args[1] = (*wdev)->identifier;
 967         } else {
 968                 /* subtract the 1 again here */
 969                 struct wiphy *wiphy;
 970                 struct wireless_dev *tmp;
 971
 972                 rtnl_lock();
 973                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 974                 if (!wiphy) {
 975                         rtnl_unlock();
 976                         return -ENODEV;
 977                 }
 978                 *rdev = wiphy_to_rdev(wiphy);
 979                 *wdev = NULL;
 980
 981                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 982                         if (tmp->identifier == cb->args[1]) {
 983                                 *wdev = tmp;
 984                                 break;
 985                         }
 986                 }
 987
 988                 if (!*wdev) {
 989                         rtnl_unlock();
 990                         return -ENODEV;
 991                 }
 992                 mutex_lock(&(*rdev)->wiphy.mtx);
 993                 rtnl_unlock();
 994         }
 995
 996         return 0;
 997 }
 998
 999 /* message building helper */
1000 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1001                      int flags, u8 cmd)
1002 {
1003         /* since there is no private header just add the generic one */
1004         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1005 }
1006
1007 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1008                                      const struct ieee80211_reg_rule *rule)
1009 {
1010         int j;
1011         struct nlattr *nl_wmm_rules =
1012                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1013
1014         if (!nl_wmm_rules)
1015                 goto nla_put_failure;
1016
1017         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1018                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1019
1020                 if (!nl_wmm_rule)
1021                         goto nla_put_failure;
1022
1023                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1024                                 rule->wmm_rule.client[j].cw_min) ||
1025                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1026                                 rule->wmm_rule.client[j].cw_max) ||
1027                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1028                                rule->wmm_rule.client[j].aifsn) ||
1029                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1030                                 rule->wmm_rule.client[j].cot))
1031                         goto nla_put_failure;
1032
1033                 nla_nest_end(msg, nl_wmm_rule);
1034         }
1035         nla_nest_end(msg, nl_wmm_rules);
1036
1037         return 0;
1038
1039 nla_put_failure:
1040         return -ENOBUFS;
1041 }
1042
1043 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1044                                    struct ieee80211_channel *chan,
1045                                    bool large)
1046 {
1047         /* Some channels must be completely excluded from the
1048          * list to protect old user-space tools from breaking
1049          */
1050         if (!large && chan->flags &
1051             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1052                 return 0;
1053         if (!large && chan->freq_offset)
1054                 return 0;
1055
1056         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1057                         chan->center_freq))
1058                 goto nla_put_failure;
1059
1060         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1061                 goto nla_put_failure;
1062
1063         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1064             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1065                 goto nla_put_failure;
1066         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1067                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1068                         goto nla_put_failure;
1069                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1070                         goto nla_put_failure;
1071         }
1072         if (chan->flags & IEEE80211_CHAN_RADAR) {
1073                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1074                         goto nla_put_failure;
1075                 if (large) {
1076                         u32 time;
1077
1078                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1079
1080                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1081                                         chan->dfs_state))
1082                                 goto nla_put_failure;
1083                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1084                                         time))
1085                                 goto nla_put_failure;
1086                         if (nla_put_u32(msg,
1087                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1088                                         chan->dfs_cac_ms))
1089                                 goto nla_put_failure;
1090                 }
1091         }
1092
1093         if (large) {
1094                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1095                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1096                         goto nla_put_failure;
1097                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1098                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1099                         goto nla_put_failure;
1100                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1101                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1102                         goto nla_put_failure;
1103                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1104                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1105                         goto nla_put_failure;
1106                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1107                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1108                         goto nla_put_failure;
1109                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1110                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1111                         goto nla_put_failure;
1112                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1113                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1114                         goto nla_put_failure;
1115                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1116                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1117                         goto nla_put_failure;
1118                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1119                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1120                         goto nla_put_failure;
1121                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1122                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1123                         goto nla_put_failure;
1124                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1125                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1126                         goto nla_put_failure;
1127                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1128                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1129                         goto nla_put_failure;
1130                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1131                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1132                         goto nla_put_failure;
1133                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1134                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1135                         goto nla_put_failure;
1136         }
1137
1138         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1139                         DBM_TO_MBM(chan->max_power)))
1140                 goto nla_put_failure;
1141
1142         if (large) {
1143                 const struct ieee80211_reg_rule *rule =
1144                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1145
1146                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1147                         if (nl80211_msg_put_wmm_rules(msg, rule))
1148                                 goto nla_put_failure;
1149                 }
1150         }
1151
1152         return 0;
1153
1154  nla_put_failure:
1155         return -ENOBUFS;
1156 }
1157
1158 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1159                                   struct cfg80211_txq_stats *txqstats,
1160                                   int attrtype)
1161 {
1162         struct nlattr *txqattr;
1163
1164 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1165         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1166             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1167                 return false;                                             \
1168         } while (0)
1169
1170         txqattr = nla_nest_start_noflag(msg, attrtype);
1171         if (!txqattr)
1172                 return false;
1173
1174         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1175         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1176         PUT_TXQVAL_U32(FLOWS, flows);
1177         PUT_TXQVAL_U32(DROPS, drops);
1178         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1179         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1180         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1181         PUT_TXQVAL_U32(COLLISIONS, collisions);
1182         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1183         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1184         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1185         nla_nest_end(msg, txqattr);
1186
1187 #undef PUT_TXQVAL_U32
1188         return true;
1189 }
1190
1191 /* netlink command implementations */
1192
1193 struct key_parse {
1194         struct key_params p;
1195         int idx;
1196         int type;
1197         bool def, defmgmt, defbeacon;
1198         bool def_uni, def_multi;
1199 };
1200
1201 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1202                                  struct key_parse *k)
1203 {
1204         struct nlattr *tb[NL80211_KEY_MAX + 1];
1205         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1206                                               nl80211_key_policy,
1207                                               info->extack);
1208         if (err)
1209                 return err;
1210
1211         k->def = !!tb[NL80211_KEY_DEFAULT];
1212         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1213         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1214
1215         if (k->def) {
1216                 k->def_uni = true;
1217                 k->def_multi = true;
1218         }
1219         if (k->defmgmt || k->defbeacon)
1220                 k->def_multi = true;
1221
1222         if (tb[NL80211_KEY_IDX])
1223                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1224
1225         if (tb[NL80211_KEY_DATA]) {
1226                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1227                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1228         }
1229
1230         if (tb[NL80211_KEY_SEQ]) {
1231                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1232                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1233         }
1234
1235         if (tb[NL80211_KEY_CIPHER])
1236                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1237
1238         if (tb[NL80211_KEY_TYPE])
1239                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1240
1241         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1242                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1243
1244                 err = nla_parse_nested_deprecated(kdt,
1245                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1246                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1247                                                   nl80211_key_default_policy,
1248                                                   info->extack);
1249                 if (err)
1250                         return err;
1251
1252                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1253                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1254         }
1255
1256         if (tb[NL80211_KEY_MODE])
1257                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1258
1259         return 0;
1260 }
1261
1262 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1263 {
1264         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1265                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1266                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1267         }
1268
1269         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1270                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1271                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1272         }
1273
1274         if (info->attrs[NL80211_ATTR_KEY_IDX])
1275                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1276
1277         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1278                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1279
1280         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1281         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1282
1283         if (k->def) {
1284                 k->def_uni = true;
1285                 k->def_multi = true;
1286         }
1287         if (k->defmgmt)
1288                 k->def_multi = true;
1289
1290         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1291                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1292
1293         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1294                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1295                 int err = nla_parse_nested_deprecated(kdt,
1296                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1297                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1298                                                       nl80211_key_default_policy,
1299                                                       info->extack);
1300                 if (err)
1301                         return err;
1302
1303                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1304                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1305         }
1306
1307         return 0;
1308 }
1309
1310 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1311 {
1312         int err;
1313
1314         memset(k, 0, sizeof(*k));
1315         k->idx = -1;
1316         k->type = -1;
1317
1318         if (info->attrs[NL80211_ATTR_KEY])
1319                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1320         else
1321                 err = nl80211_parse_key_old(info, k);
1322
1323         if (err)
1324                 return err;
1325
1326         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1327             (k->defbeacon ? 1 : 0) > 1) {
1328                 GENL_SET_ERR_MSG(info,
1329                                  "key with multiple default flags is invalid");
1330                 return -EINVAL;
1331         }
1332
1333         if (k->defmgmt || k->defbeacon) {
1334                 if (k->def_uni || !k->def_multi) {
1335                         GENL_SET_ERR_MSG(info,
1336                                          "defmgmt/defbeacon key must be mcast");
1337                         return -EINVAL;
1338                 }
1339         }
1340
1341         if (k->idx != -1) {
1342                 if (k->defmgmt) {
1343                         if (k->idx < 4 || k->idx > 5) {
1344                                 GENL_SET_ERR_MSG(info,
1345                                                  "defmgmt key idx not 4 or 5");
1346                                 return -EINVAL;
1347                         }
1348                 } else if (k->defbeacon) {
1349                         if (k->idx < 6 || k->idx > 7) {
1350                                 GENL_SET_ERR_MSG(info,
1351                                                  "defbeacon key idx not 6 or 7");
1352                                 return -EINVAL;
1353                         }
1354                 } else if (k->def) {
1355                         if (k->idx < 0 || k->idx > 3) {
1356                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1357                                 return -EINVAL;
1358                         }
1359                 } else {
1360                         if (k->idx < 0 || k->idx > 7) {
1361                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1362                                 return -EINVAL;
1363                         }
1364                 }
1365         }
1366
1367         return 0;
1368 }
1369
1370 static struct cfg80211_cached_keys *
1371 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1372                        struct genl_info *info, bool *no_ht)
1373 {
1374         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1375         struct key_parse parse;
1376         struct nlattr *key;
1377         struct cfg80211_cached_keys *result;
1378         int rem, err, def = 0;
1379         bool have_key = false;
1380
1381         nla_for_each_nested(key, keys, rem) {
1382                 have_key = true;
1383                 break;
1384         }
1385
1386         if (!have_key)
1387                 return NULL;
1388
1389         result = kzalloc(sizeof(*result), GFP_KERNEL);
1390         if (!result)
1391                 return ERR_PTR(-ENOMEM);
1392
1393         result->def = -1;
1394
1395         nla_for_each_nested(key, keys, rem) {
1396                 memset(&parse, 0, sizeof(parse));
1397                 parse.idx = -1;
1398
1399                 err = nl80211_parse_key_new(info, key, &parse);
1400                 if (err)
1401                         goto error;
1402                 err = -EINVAL;
1403                 if (!parse.p.key)
1404                         goto error;
1405                 if (parse.idx < 0 || parse.idx > 3) {
1406                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1407                         goto error;
1408                 }
1409                 if (parse.def) {
1410                         if (def) {
1411                                 GENL_SET_ERR_MSG(info,
1412                                                  "only one key can be default");
1413                                 goto error;
1414                         }
1415                         def = 1;
1416                         result->def = parse.idx;
1417                         if (!parse.def_uni || !parse.def_multi)
1418                                 goto error;
1419                 } else if (parse.defmgmt)
1420                         goto error;
1421                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1422                                                      parse.idx, false, NULL);
1423                 if (err)
1424                         goto error;
1425                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1426                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1427                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1428                         err = -EINVAL;
1429                         goto error;
1430                 }
1431                 result->params[parse.idx].cipher = parse.p.cipher;
1432                 result->params[parse.idx].key_len = parse.p.key_len;
1433                 result->params[parse.idx].key = result->data[parse.idx];
1434                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1435
1436                 /* must be WEP key if we got here */
1437                 if (no_ht)
1438                         *no_ht = true;
1439         }
1440
1441         if (result->def < 0) {
1442                 err = -EINVAL;
1443                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1444                 goto error;
1445         }
1446
1447         return result;
1448  error:
1449         kfree(result);
1450         return ERR_PTR(err);
1451 }
1452
1453 static int nl80211_key_allowed(struct wireless_dev *wdev)
1454 {
1455         ASSERT_WDEV_LOCK(wdev);
1456
1457         switch (wdev->iftype) {
1458         case NL80211_IFTYPE_AP:
1459         case NL80211_IFTYPE_AP_VLAN:
1460         case NL80211_IFTYPE_P2P_GO:
1461         case NL80211_IFTYPE_MESH_POINT:
1462                 break;
1463         case NL80211_IFTYPE_ADHOC:
1464         case NL80211_IFTYPE_STATION:
1465         case NL80211_IFTYPE_P2P_CLIENT:
1466                 if (!wdev->current_bss)
1467                         return -ENOLINK;
1468                 break;
1469         case NL80211_IFTYPE_UNSPECIFIED:
1470         case NL80211_IFTYPE_OCB:
1471         case NL80211_IFTYPE_MONITOR:
1472         case NL80211_IFTYPE_NAN:
1473         case NL80211_IFTYPE_P2P_DEVICE:
1474         case NL80211_IFTYPE_WDS:
1475         case NUM_NL80211_IFTYPES:
1476                 return -EINVAL;
1477         }
1478
1479         return 0;
1480 }
1481
1482 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1483                                                         u32 freq)
1484 {
1485         struct ieee80211_channel *chan;
1486
1487         chan = ieee80211_get_channel_khz(wiphy, freq);
1488         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1489                 return NULL;
1490         return chan;
1491 }
1492
1493 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1494 {
1495         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1496         int i;
1497
1498         if (!nl_modes)
1499                 goto nla_put_failure;
1500
1501         i = 0;
1502         while (ifmodes) {
1503                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1504                         goto nla_put_failure;
1505                 ifmodes >>= 1;
1506                 i++;
1507         }
1508
1509         nla_nest_end(msg, nl_modes);
1510         return 0;
1511
1512 nla_put_failure:
1513         return -ENOBUFS;
1514 }
1515
1516 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1517                                           struct sk_buff *msg,
1518                                           bool large)
1519 {
1520         struct nlattr *nl_combis;
1521         int i, j;
1522
1523         nl_combis = nla_nest_start_noflag(msg,
1524                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1525         if (!nl_combis)
1526                 goto nla_put_failure;
1527
1528         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1529                 const struct ieee80211_iface_combination *c;
1530                 struct nlattr *nl_combi, *nl_limits;
1531
1532                 c = &wiphy->iface_combinations[i];
1533
1534                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1535                 if (!nl_combi)
1536                         goto nla_put_failure;
1537
1538                 nl_limits = nla_nest_start_noflag(msg,
1539                                                   NL80211_IFACE_COMB_LIMITS);
1540                 if (!nl_limits)
1541                         goto nla_put_failure;
1542
1543                 for (j = 0; j < c->n_limits; j++) {
1544                         struct nlattr *nl_limit;
1545
1546                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1547                         if (!nl_limit)
1548                                 goto nla_put_failure;
1549                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1550                                         c->limits[j].max))
1551                                 goto nla_put_failure;
1552                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1553                                                 c->limits[j].types))
1554                                 goto nla_put_failure;
1555                         nla_nest_end(msg, nl_limit);
1556                 }
1557
1558                 nla_nest_end(msg, nl_limits);
1559
1560                 if (c->beacon_int_infra_match &&
1561                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1562                         goto nla_put_failure;
1563                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1564                                 c->num_different_channels) ||
1565                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1566                                 c->max_interfaces))
1567                         goto nla_put_failure;
1568                 if (large &&
1569                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1570                                 c->radar_detect_widths) ||
1571                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1572                                 c->radar_detect_regions)))
1573                         goto nla_put_failure;
1574                 if (c->beacon_int_min_gcd &&
1575                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1576                                 c->beacon_int_min_gcd))
1577                         goto nla_put_failure;
1578
1579                 nla_nest_end(msg, nl_combi);
1580         }
1581
1582         nla_nest_end(msg, nl_combis);
1583
1584         return 0;
1585 nla_put_failure:
1586         return -ENOBUFS;
1587 }
1588
1589 #ifdef CONFIG_PM
1590 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1591                                         struct sk_buff *msg)
1592 {
1593         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1594         struct nlattr *nl_tcp;
1595
1596         if (!tcp)
1597                 return 0;
1598
1599         nl_tcp = nla_nest_start_noflag(msg,
1600                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1601         if (!nl_tcp)
1602                 return -ENOBUFS;
1603
1604         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1605                         tcp->data_payload_max))
1606                 return -ENOBUFS;
1607
1608         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1609                         tcp->data_payload_max))
1610                 return -ENOBUFS;
1611
1612         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1613                 return -ENOBUFS;
1614
1615         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1616                                 sizeof(*tcp->tok), tcp->tok))
1617                 return -ENOBUFS;
1618
1619         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1620                         tcp->data_interval_max))
1621                 return -ENOBUFS;
1622
1623         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1624                         tcp->wake_payload_max))
1625                 return -ENOBUFS;
1626
1627         nla_nest_end(msg, nl_tcp);
1628         return 0;
1629 }
1630
1631 static int nl80211_send_wowlan(struct sk_buff *msg,
1632                                struct cfg80211_registered_device *rdev,
1633                                bool large)
1634 {
1635         struct nlattr *nl_wowlan;
1636
1637         if (!rdev->wiphy.wowlan)
1638                 return 0;
1639
1640         nl_wowlan = nla_nest_start_noflag(msg,
1641                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1642         if (!nl_wowlan)
1643                 return -ENOBUFS;
1644
1645         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1646              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1647             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1648              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1649             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1650              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1651             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1652              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1653             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1654              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1655             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1656              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1657             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1658              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1659             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1660              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1661                 return -ENOBUFS;
1662
1663         if (rdev->wiphy.wowlan->n_patterns) {
1664                 struct nl80211_pattern_support pat = {
1665                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1666                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1667                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1668                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1669                 };
1670
1671                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1672                             sizeof(pat), &pat))
1673                         return -ENOBUFS;
1674         }
1675
1676         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1677             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1678                         rdev->wiphy.wowlan->max_nd_match_sets))
1679                 return -ENOBUFS;
1680
1681         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1682                 return -ENOBUFS;
1683
1684         nla_nest_end(msg, nl_wowlan);
1685
1686         return 0;
1687 }
1688 #endif
1689
1690 static int nl80211_send_coalesce(struct sk_buff *msg,
1691                                  struct cfg80211_registered_device *rdev)
1692 {
1693         struct nl80211_coalesce_rule_support rule;
1694
1695         if (!rdev->wiphy.coalesce)
1696                 return 0;
1697
1698         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1699         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1700         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1701         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1702         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1703         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1704
1705         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1706                 return -ENOBUFS;
1707
1708         return 0;
1709 }
1710
1711 static int
1712 nl80211_send_iftype_data(struct sk_buff *msg,
1713                          const struct ieee80211_supported_band *sband,
1714                          const struct ieee80211_sband_iftype_data *iftdata)
1715 {
1716         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1717
1718         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1719                                 iftdata->types_mask))
1720                 return -ENOBUFS;
1721
1722         if (he_cap->has_he) {
1723                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1724                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1725                             he_cap->he_cap_elem.mac_cap_info) ||
1726                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1727                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1728                             he_cap->he_cap_elem.phy_cap_info) ||
1729                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1730                             sizeof(he_cap->he_mcs_nss_supp),
1731                             &he_cap->he_mcs_nss_supp) ||
1732                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1733                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1734                         return -ENOBUFS;
1735         }
1736
1737         if (sband->band == NL80211_BAND_6GHZ &&
1738             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1739                     sizeof(iftdata->he_6ghz_capa),
1740                     &iftdata->he_6ghz_capa))
1741                 return -ENOBUFS;
1742
1743         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1744             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1745                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1746                 return -ENOBUFS;
1747
1748         return 0;
1749 }
1750
1751 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1752                                       struct ieee80211_supported_band *sband,
1753                                       bool large)
1754 {
1755         struct nlattr *nl_rates, *nl_rate;
1756         struct ieee80211_rate *rate;
1757         int i;
1758
1759         /* add HT info */
1760         if (sband->ht_cap.ht_supported &&
1761             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1762                      sizeof(sband->ht_cap.mcs),
1763                      &sband->ht_cap.mcs) ||
1764              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1765                          sband->ht_cap.cap) ||
1766              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1767                         sband->ht_cap.ampdu_factor) ||
1768              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1769                         sband->ht_cap.ampdu_density)))
1770                 return -ENOBUFS;
1771
1772         /* add VHT info */
1773         if (sband->vht_cap.vht_supported &&
1774             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1775                      sizeof(sband->vht_cap.vht_mcs),
1776                      &sband->vht_cap.vht_mcs) ||
1777              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1778                          sband->vht_cap.cap)))
1779                 return -ENOBUFS;
1780
1781         if (large && sband->n_iftype_data) {
1782                 struct nlattr *nl_iftype_data =
1783                         nla_nest_start_noflag(msg,
1784                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1785                 int err;
1786
1787                 if (!nl_iftype_data)
1788                         return -ENOBUFS;
1789
1790                 for (i = 0; i < sband->n_iftype_data; i++) {
1791                         struct nlattr *iftdata;
1792
1793                         iftdata = nla_nest_start_noflag(msg, i + 1);
1794                         if (!iftdata)
1795                                 return -ENOBUFS;
1796
1797                         err = nl80211_send_iftype_data(msg, sband,
1798                                                        &sband->iftype_data[i]);
1799                         if (err)
1800                                 return err;
1801
1802                         nla_nest_end(msg, iftdata);
1803                 }
1804
1805                 nla_nest_end(msg, nl_iftype_data);
1806         }
1807
1808         /* add EDMG info */
1809         if (large && sband->edmg_cap.channels &&
1810             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1811                        sband->edmg_cap.channels) ||
1812             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1813                        sband->edmg_cap.bw_config)))
1814
1815                 return -ENOBUFS;
1816
1817         /* add bitrates */
1818         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1819         if (!nl_rates)
1820                 return -ENOBUFS;
1821
1822         for (i = 0; i < sband->n_bitrates; i++) {
1823                 nl_rate = nla_nest_start_noflag(msg, i);
1824                 if (!nl_rate)
1825                         return -ENOBUFS;
1826
1827                 rate = &sband->bitrates[i];
1828                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1829                                 rate->bitrate))
1830                         return -ENOBUFS;
1831                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1832                     nla_put_flag(msg,
1833                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1834                         return -ENOBUFS;
1835
1836                 nla_nest_end(msg, nl_rate);
1837         }
1838
1839         nla_nest_end(msg, nl_rates);
1840
1841         return 0;
1842 }
1843
1844 static int
1845 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1846                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1847 {
1848         u16 stypes;
1849         struct nlattr *nl_ftypes, *nl_ifs;
1850         enum nl80211_iftype ift;
1851         int i;
1852
1853         if (!mgmt_stypes)
1854                 return 0;
1855
1856         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1857         if (!nl_ifs)
1858                 return -ENOBUFS;
1859
1860         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1861                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1862                 if (!nl_ftypes)
1863                         return -ENOBUFS;
1864                 i = 0;
1865                 stypes = mgmt_stypes[ift].tx;
1866                 while (stypes) {
1867                         if ((stypes & 1) &&
1868                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1869                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1870                                 return -ENOBUFS;
1871                         stypes >>= 1;
1872                         i++;
1873                 }
1874                 nla_nest_end(msg, nl_ftypes);
1875         }
1876
1877         nla_nest_end(msg, nl_ifs);
1878
1879         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1880         if (!nl_ifs)
1881                 return -ENOBUFS;
1882
1883         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1884                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1885                 if (!nl_ftypes)
1886                         return -ENOBUFS;
1887                 i = 0;
1888                 stypes = mgmt_stypes[ift].rx;
1889                 while (stypes) {
1890                         if ((stypes & 1) &&
1891                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1892                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1893                                 return -ENOBUFS;
1894                         stypes >>= 1;
1895                         i++;
1896                 }
1897                 nla_nest_end(msg, nl_ftypes);
1898         }
1899         nla_nest_end(msg, nl_ifs);
1900
1901         return 0;
1902 }
1903
1904 #define CMD(op, n)                                                      \
1905          do {                                                           \
1906                 if (rdev->ops->op) {                                    \
1907                         i++;                                            \
1908                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1909                                 goto nla_put_failure;                   \
1910                 }                                                       \
1911         } while (0)
1912
1913 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1914                                         struct sk_buff *msg)
1915 {
1916         int i = 0;
1917
1918         /*
1919          * do *NOT* add anything into this function, new things need to be
1920          * advertised only to new versions of userspace that can deal with
1921          * the split (and they can't possibly care about new features...
1922          */
1923         CMD(add_virtual_intf, NEW_INTERFACE);
1924         CMD(change_virtual_intf, SET_INTERFACE);
1925         CMD(add_key, NEW_KEY);
1926         CMD(start_ap, START_AP);
1927         CMD(add_station, NEW_STATION);
1928         CMD(add_mpath, NEW_MPATH);
1929         CMD(update_mesh_config, SET_MESH_CONFIG);
1930         CMD(change_bss, SET_BSS);
1931         CMD(auth, AUTHENTICATE);
1932         CMD(assoc, ASSOCIATE);
1933         CMD(deauth, DEAUTHENTICATE);
1934         CMD(disassoc, DISASSOCIATE);
1935         CMD(join_ibss, JOIN_IBSS);
1936         CMD(join_mesh, JOIN_MESH);
1937         CMD(set_pmksa, SET_PMKSA);
1938         CMD(del_pmksa, DEL_PMKSA);
1939         CMD(flush_pmksa, FLUSH_PMKSA);
1940         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1941                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1942         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1943         CMD(mgmt_tx, FRAME);
1944         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1945         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1946                 i++;
1947                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1948                         goto nla_put_failure;
1949         }
1950         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1951             rdev->ops->join_mesh) {
1952                 i++;
1953                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1954                         goto nla_put_failure;
1955         }
1956         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1957                 CMD(tdls_mgmt, TDLS_MGMT);
1958                 CMD(tdls_oper, TDLS_OPER);
1959         }
1960         if (rdev->wiphy.max_sched_scan_reqs)
1961                 CMD(sched_scan_start, START_SCHED_SCAN);
1962         CMD(probe_client, PROBE_CLIENT);
1963         CMD(set_noack_map, SET_NOACK_MAP);
1964         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1965                 i++;
1966                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1967                         goto nla_put_failure;
1968         }
1969         CMD(start_p2p_device, START_P2P_DEVICE);
1970         CMD(set_mcast_rate, SET_MCAST_RATE);
1971 #ifdef CONFIG_NL80211_TESTMODE
1972         CMD(testmode_cmd, TESTMODE);
1973 #endif
1974
1975         if (rdev->ops->connect || rdev->ops->auth) {
1976                 i++;
1977                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1978                         goto nla_put_failure;
1979         }
1980
1981         if (rdev->ops->disconnect || rdev->ops->deauth) {
1982                 i++;
1983                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1984                         goto nla_put_failure;
1985         }
1986
1987         return i;
1988  nla_put_failure:
1989         return -ENOBUFS;
1990 }
1991
1992 static int
1993 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1994                            struct sk_buff *msg)
1995 {
1996         struct nlattr *ftm;
1997
1998         if (!cap->ftm.supported)
1999                 return 0;
2000
2001         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2002         if (!ftm)
2003                 return -ENOBUFS;
2004
2005         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2006                 return -ENOBUFS;
2007         if (cap->ftm.non_asap &&
2008             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2009                 return -ENOBUFS;
2010         if (cap->ftm.request_lci &&
2011             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2012                 return -ENOBUFS;
2013         if (cap->ftm.request_civicloc &&
2014             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2015                 return -ENOBUFS;
2016         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2017                         cap->ftm.preambles))
2018                 return -ENOBUFS;
2019         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2020                         cap->ftm.bandwidths))
2021                 return -ENOBUFS;
2022         if (cap->ftm.max_bursts_exponent >= 0 &&
2023             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2024                         cap->ftm.max_bursts_exponent))
2025                 return -ENOBUFS;
2026         if (cap->ftm.max_ftms_per_burst &&
2027             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2028                         cap->ftm.max_ftms_per_burst))
2029                 return -ENOBUFS;
2030         if (cap->ftm.trigger_based &&
2031             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2032                 return -ENOBUFS;
2033         if (cap->ftm.non_trigger_based &&
2034             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2035                 return -ENOBUFS;
2036
2037         nla_nest_end(msg, ftm);
2038         return 0;
2039 }
2040
2041 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2042                                   struct sk_buff *msg)
2043 {
2044         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2045         struct nlattr *pmsr, *caps;
2046
2047         if (!cap)
2048                 return 0;
2049
2050         /*
2051          * we don't need to clean up anything here since the caller
2052          * will genlmsg_cancel() if we fail
2053          */
2054
2055         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2056         if (!pmsr)
2057                 return -ENOBUFS;
2058
2059         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2060                 return -ENOBUFS;
2061
2062         if (cap->report_ap_tsf &&
2063             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2064                 return -ENOBUFS;
2065
2066         if (cap->randomize_mac_addr &&
2067             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2068                 return -ENOBUFS;
2069
2070         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2071         if (!caps)
2072                 return -ENOBUFS;
2073
2074         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2075                 return -ENOBUFS;
2076
2077         nla_nest_end(msg, caps);
2078         nla_nest_end(msg, pmsr);
2079
2080         return 0;
2081 }
2082
2083 static int
2084 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2085                               struct sk_buff *msg)
2086 {
2087         int i;
2088         struct nlattr *nested, *nested_akms;
2089         const struct wiphy_iftype_akm_suites *iftype_akms;
2090
2091         if (!rdev->wiphy.num_iftype_akm_suites ||
2092             !rdev->wiphy.iftype_akm_suites)
2093                 return 0;
2094
2095         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2096         if (!nested)
2097                 return -ENOBUFS;
2098
2099         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2100                 nested_akms = nla_nest_start(msg, i + 1);
2101                 if (!nested_akms)
2102                         return -ENOBUFS;
2103
2104                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2105
2106                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2107                                         iftype_akms->iftypes_mask))
2108                         return -ENOBUFS;
2109
2110                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2111                             sizeof(u32) * iftype_akms->n_akm_suites,
2112                             iftype_akms->akm_suites)) {
2113                         return -ENOBUFS;
2114                 }
2115                 nla_nest_end(msg, nested_akms);
2116         }
2117
2118         nla_nest_end(msg, nested);
2119
2120         return 0;
2121 }
2122
2123 static int
2124 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2125                                struct sk_buff *msg)
2126 {
2127         struct nlattr *supp;
2128
2129         if (!rdev->wiphy.tid_config_support.vif &&
2130             !rdev->wiphy.tid_config_support.peer)
2131                 return 0;
2132
2133         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2134         if (!supp)
2135                 return -ENOSPC;
2136
2137         if (rdev->wiphy.tid_config_support.vif &&
2138             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2139                               rdev->wiphy.tid_config_support.vif,
2140                               NL80211_TID_CONFIG_ATTR_PAD))
2141                 goto fail;
2142
2143         if (rdev->wiphy.tid_config_support.peer &&
2144             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2145                               rdev->wiphy.tid_config_support.peer,
2146                               NL80211_TID_CONFIG_ATTR_PAD))
2147                 goto fail;
2148
2149         /* for now we just use the same value ... makes more sense */
2150         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2151                        rdev->wiphy.tid_config_support.max_retry))
2152                 goto fail;
2153         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2154                        rdev->wiphy.tid_config_support.max_retry))
2155                 goto fail;
2156
2157         nla_nest_end(msg, supp);
2158
2159         return 0;
2160 fail:
2161         nla_nest_cancel(msg, supp);
2162         return -ENOBUFS;
2163 }
2164
2165 static int
2166 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2167                       struct sk_buff *msg)
2168 {
2169         struct nlattr *sar_capa, *specs, *sub_freq_range;
2170         u8 num_freq_ranges;
2171         int i;
2172
2173         if (!rdev->wiphy.sar_capa)
2174                 return 0;
2175
2176         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2177
2178         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2179         if (!sar_capa)
2180                 return -ENOSPC;
2181
2182         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2183                 goto fail;
2184
2185         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2186         if (!specs)
2187                 goto fail;
2188
2189         /* report supported freq_ranges */
2190         for (i = 0; i < num_freq_ranges; i++) {
2191                 sub_freq_range = nla_nest_start(msg, i + 1);
2192                 if (!sub_freq_range)
2193                         goto fail;
2194
2195                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2196                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2197                         goto fail;
2198
2199                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2200                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2201                         goto fail;
2202
2203                 nla_nest_end(msg, sub_freq_range);
2204         }
2205
2206         nla_nest_end(msg, specs);
2207         nla_nest_end(msg, sar_capa);
2208
2209         return 0;
2210 fail:
2211         nla_nest_cancel(msg, sar_capa);
2212         return -ENOBUFS;
2213 }
2214
2215 struct nl80211_dump_wiphy_state {
2216         s64 filter_wiphy;
2217         long start;
2218         long split_start, band_start, chan_start, capa_start;
2219         bool split;
2220 };
2221
2222 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2223                               enum nl80211_commands cmd,
2224                               struct sk_buff *msg, u32 portid, u32 seq,
2225                               int flags, struct nl80211_dump_wiphy_state *state)
2226 {
2227         void *hdr;
2228         struct nlattr *nl_bands, *nl_band;
2229         struct nlattr *nl_freqs, *nl_freq;
2230         struct nlattr *nl_cmds;
2231         enum nl80211_band band;
2232         struct ieee80211_channel *chan;
2233         int i;
2234         const struct ieee80211_txrx_stypes *mgmt_stypes =
2235                                 rdev->wiphy.mgmt_stypes;
2236         u32 features;
2237
2238         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2239         if (!hdr)
2240                 return -ENOBUFS;
2241
2242         if (WARN_ON(!state))
2243                 return -EINVAL;
2244
2245         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2246             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2247                            wiphy_name(&rdev->wiphy)) ||
2248             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2249                         cfg80211_rdev_list_generation))
2250                 goto nla_put_failure;
2251
2252         if (cmd != NL80211_CMD_NEW_WIPHY)
2253                 goto finish;
2254
2255         switch (state->split_start) {
2256         case 0:
2257                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2258                                rdev->wiphy.retry_short) ||
2259                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2260                                rdev->wiphy.retry_long) ||
2261                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2262                                 rdev->wiphy.frag_threshold) ||
2263                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2264                                 rdev->wiphy.rts_threshold) ||
2265                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2266                                rdev->wiphy.coverage_class) ||
2267                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2268                                rdev->wiphy.max_scan_ssids) ||
2269                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2270                                rdev->wiphy.max_sched_scan_ssids) ||
2271                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2272                                 rdev->wiphy.max_scan_ie_len) ||
2273                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2274                                 rdev->wiphy.max_sched_scan_ie_len) ||
2275                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2276                                rdev->wiphy.max_match_sets))
2277                         goto nla_put_failure;
2278
2279                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2280                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2281                         goto nla_put_failure;
2282                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2283                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2284                         goto nla_put_failure;
2285                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2286                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2287                         goto nla_put_failure;
2288                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2289                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2290                         goto nla_put_failure;
2291                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2292                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2293                         goto nla_put_failure;
2294                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2295                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2296                         goto nla_put_failure;
2297                 state->split_start++;
2298                 if (state->split)
2299                         break;
2300                 fallthrough;
2301         case 1:
2302                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2303                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2304                             rdev->wiphy.cipher_suites))
2305                         goto nla_put_failure;
2306
2307                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2308                                rdev->wiphy.max_num_pmkids))
2309                         goto nla_put_failure;
2310
2311                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2312                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2313                         goto nla_put_failure;
2314
2315                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2316                                 rdev->wiphy.available_antennas_tx) ||
2317                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2318                                 rdev->wiphy.available_antennas_rx))
2319                         goto nla_put_failure;
2320
2321                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2322                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2323                                 rdev->wiphy.probe_resp_offload))
2324                         goto nla_put_failure;
2325
2326                 if ((rdev->wiphy.available_antennas_tx ||
2327                      rdev->wiphy.available_antennas_rx) &&
2328                     rdev->ops->get_antenna) {
2329                         u32 tx_ant = 0, rx_ant = 0;
2330                         int res;
2331
2332                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2333                         if (!res) {
2334                                 if (nla_put_u32(msg,
2335                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2336                                                 tx_ant) ||
2337                                     nla_put_u32(msg,
2338                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2339                                                 rx_ant))
2340                                         goto nla_put_failure;
2341                         }
2342                 }
2343
2344                 state->split_start++;
2345                 if (state->split)
2346                         break;
2347                 fallthrough;
2348         case 2:
2349                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2350                                         rdev->wiphy.interface_modes))
2351                                 goto nla_put_failure;
2352                 state->split_start++;
2353                 if (state->split)
2354                         break;
2355                 fallthrough;
2356         case 3:
2357                 nl_bands = nla_nest_start_noflag(msg,
2358                                                  NL80211_ATTR_WIPHY_BANDS);
2359                 if (!nl_bands)
2360                         goto nla_put_failure;
2361
2362                 for (band = state->band_start;
2363                      band < (state->split ?
2364                                 NUM_NL80211_BANDS :
2365                                 NL80211_BAND_60GHZ + 1);
2366                      band++) {
2367                         struct ieee80211_supported_band *sband;
2368
2369                         /* omit higher bands for ancient software */
2370                         if (band > NL80211_BAND_5GHZ && !state->split)
2371                                 break;
2372
2373                         sband = rdev->wiphy.bands[band];
2374
2375                         if (!sband)
2376                                 continue;
2377
2378                         nl_band = nla_nest_start_noflag(msg, band);
2379                         if (!nl_band)
2380                                 goto nla_put_failure;
2381
2382                         switch (state->chan_start) {
2383                         case 0:
2384                                 if (nl80211_send_band_rateinfo(msg, sband,
2385                                                                state->split))
2386                                         goto nla_put_failure;
2387                                 state->chan_start++;
2388                                 if (state->split)
2389                                         break;
2390                                 fallthrough;
2391                         default:
2392                                 /* add frequencies */
2393                                 nl_freqs = nla_nest_start_noflag(msg,
2394                                                                  NL80211_BAND_ATTR_FREQS);
2395                                 if (!nl_freqs)
2396                                         goto nla_put_failure;
2397
2398                                 for (i = state->chan_start - 1;
2399                                      i < sband->n_channels;
2400                                      i++) {
2401                                         nl_freq = nla_nest_start_noflag(msg,
2402                                                                         i);
2403                                         if (!nl_freq)
2404                                                 goto nla_put_failure;
2405
2406                                         chan = &sband->channels[i];
2407
2408                                         if (nl80211_msg_put_channel(
2409                                                         msg, &rdev->wiphy, chan,
2410                                                         state->split))
2411                                                 goto nla_put_failure;
2412
2413                                         nla_nest_end(msg, nl_freq);
2414                                         if (state->split)
2415                                                 break;
2416                                 }
2417                                 if (i < sband->n_channels)
2418                                         state->chan_start = i + 2;
2419                                 else
2420                                         state->chan_start = 0;
2421                                 nla_nest_end(msg, nl_freqs);
2422                         }
2423
2424                         nla_nest_end(msg, nl_band);
2425
2426                         if (state->split) {
2427                                 /* start again here */
2428                                 if (state->chan_start)
2429                                         band--;
2430                                 break;
2431                         }
2432                 }
2433                 nla_nest_end(msg, nl_bands);
2434
2435                 if (band < NUM_NL80211_BANDS)
2436                         state->band_start = band + 1;
2437                 else
2438                         state->band_start = 0;
2439
2440                 /* if bands & channels are done, continue outside */
2441                 if (state->band_start == 0 && state->chan_start == 0)
2442                         state->split_start++;
2443                 if (state->split)
2444                         break;
2445                 fallthrough;
2446         case 4:
2447                 nl_cmds = nla_nest_start_noflag(msg,
2448                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2449                 if (!nl_cmds)
2450                         goto nla_put_failure;
2451
2452                 i = nl80211_add_commands_unsplit(rdev, msg);
2453                 if (i < 0)
2454                         goto nla_put_failure;
2455                 if (state->split) {
2456                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2457                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2458                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2459                                 CMD(channel_switch, CHANNEL_SWITCH);
2460                         CMD(set_qos_map, SET_QOS_MAP);
2461                         if (rdev->wiphy.features &
2462                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2463                                 CMD(add_tx_ts, ADD_TX_TS);
2464                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2465                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2466                         CMD(update_ft_ies, UPDATE_FT_IES);
2467                         if (rdev->wiphy.sar_capa)
2468                                 CMD(set_sar_specs, SET_SAR_SPECS);
2469                 }
2470 #undef CMD
2471
2472                 nla_nest_end(msg, nl_cmds);
2473                 state->split_start++;
2474                 if (state->split)
2475                         break;
2476                 fallthrough;
2477         case 5:
2478                 if (rdev->ops->remain_on_channel &&
2479                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2480                     nla_put_u32(msg,
2481                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2482                                 rdev->wiphy.max_remain_on_channel_duration))
2483                         goto nla_put_failure;
2484
2485                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2486                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2487                         goto nla_put_failure;
2488
2489                 state->split_start++;
2490                 if (state->split)
2491                         break;
2492                 fallthrough;
2493         case 6:
2494 #ifdef CONFIG_PM
2495                 if (nl80211_send_wowlan(msg, rdev, state->split))
2496                         goto nla_put_failure;
2497                 state->split_start++;
2498                 if (state->split)
2499                         break;
2500 #else
2501                 state->split_start++;
2502 #endif
2503                 fallthrough;
2504         case 7:
2505                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2506                                         rdev->wiphy.software_iftypes))
2507                         goto nla_put_failure;
2508
2509                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2510                                                    state->split))
2511                         goto nla_put_failure;
2512
2513                 state->split_start++;
2514                 if (state->split)
2515                         break;
2516                 fallthrough;
2517         case 8:
2518                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2519                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2520                                 rdev->wiphy.ap_sme_capa))
2521                         goto nla_put_failure;
2522
2523                 features = rdev->wiphy.features;
2524                 /*
2525                  * We can only add the per-channel limit information if the
2526                  * dump is split, otherwise it makes it too big. Therefore
2527                  * only advertise it in that case.
2528                  */
2529                 if (state->split)
2530                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2531                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2532                         goto nla_put_failure;
2533
2534                 if (rdev->wiphy.ht_capa_mod_mask &&
2535                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2536                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2537                             rdev->wiphy.ht_capa_mod_mask))
2538                         goto nla_put_failure;
2539
2540                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2541                     rdev->wiphy.max_acl_mac_addrs &&
2542                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2543                                 rdev->wiphy.max_acl_mac_addrs))
2544                         goto nla_put_failure;
2545
2546                 /*
2547                  * Any information below this point is only available to
2548                  * applications that can deal with it being split. This
2549                  * helps ensure that newly added capabilities don't break
2550                  * older tools by overrunning their buffers.
2551                  *
2552                  * We still increment split_start so that in the split
2553                  * case we'll continue with more data in the next round,
2554                  * but break unconditionally so unsplit data stops here.
2555                  */
2556                 if (state->split)
2557                         state->split_start++;
2558                 else
2559                         state->split_start = 0;
2560                 break;
2561         case 9:
2562                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2563                         goto nla_put_failure;
2564
2565                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2566                                 rdev->wiphy.max_sched_scan_plans) ||
2567                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2568                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2569                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2570                                 rdev->wiphy.max_sched_scan_plan_iterations))
2571                         goto nla_put_failure;
2572
2573                 if (rdev->wiphy.extended_capabilities &&
2574                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2575                              rdev->wiphy.extended_capabilities_len,
2576                              rdev->wiphy.extended_capabilities) ||
2577                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2578                              rdev->wiphy.extended_capabilities_len,
2579                              rdev->wiphy.extended_capabilities_mask)))
2580                         goto nla_put_failure;
2581
2582                 if (rdev->wiphy.vht_capa_mod_mask &&
2583                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2584                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2585                             rdev->wiphy.vht_capa_mod_mask))
2586                         goto nla_put_failure;
2587
2588                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2589                             rdev->wiphy.perm_addr))
2590                         goto nla_put_failure;
2591
2592                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2593                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2594                             rdev->wiphy.addr_mask))
2595                         goto nla_put_failure;
2596
2597                 if (rdev->wiphy.n_addresses > 1) {
2598                         void *attr;
2599
2600                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2601                         if (!attr)
2602                                 goto nla_put_failure;
2603
2604                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2605                                 if (nla_put(msg, i + 1, ETH_ALEN,
2606                                             rdev->wiphy.addresses[i].addr))
2607                                         goto nla_put_failure;
2608
2609                         nla_nest_end(msg, attr);
2610                 }
2611
2612                 state->split_start++;
2613                 break;
2614         case 10:
2615                 if (nl80211_send_coalesce(msg, rdev))
2616                         goto nla_put_failure;
2617
2618                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2619                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2620                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2621                         goto nla_put_failure;
2622
2623                 if (rdev->wiphy.max_ap_assoc_sta &&
2624                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2625                                 rdev->wiphy.max_ap_assoc_sta))
2626                         goto nla_put_failure;
2627
2628                 state->split_start++;
2629                 break;
2630         case 11:
2631                 if (rdev->wiphy.n_vendor_commands) {
2632                         const struct nl80211_vendor_cmd_info *info;
2633                         struct nlattr *nested;
2634
2635                         nested = nla_nest_start_noflag(msg,
2636                                                        NL80211_ATTR_VENDOR_DATA);
2637                         if (!nested)
2638                                 goto nla_put_failure;
2639
2640                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2641                                 info = &rdev->wiphy.vendor_commands[i].info;
2642                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2643                                         goto nla_put_failure;
2644                         }
2645                         nla_nest_end(msg, nested);
2646                 }
2647
2648                 if (rdev->wiphy.n_vendor_events) {
2649                         const struct nl80211_vendor_cmd_info *info;
2650                         struct nlattr *nested;
2651
2652                         nested = nla_nest_start_noflag(msg,
2653                                                        NL80211_ATTR_VENDOR_EVENTS);
2654                         if (!nested)
2655                                 goto nla_put_failure;
2656
2657                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2658                                 info = &rdev->wiphy.vendor_events[i];
2659                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2660                                         goto nla_put_failure;
2661                         }
2662                         nla_nest_end(msg, nested);
2663                 }
2664                 state->split_start++;
2665                 break;
2666         case 12:
2667                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2668                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2669                                rdev->wiphy.max_num_csa_counters))
2670                         goto nla_put_failure;
2671
2672                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2673                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2674                         goto nla_put_failure;
2675
2676                 if (rdev->wiphy.max_sched_scan_reqs &&
2677                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2678                                 rdev->wiphy.max_sched_scan_reqs))
2679                         goto nla_put_failure;
2680
2681                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2682                             sizeof(rdev->wiphy.ext_features),
2683                             rdev->wiphy.ext_features))
2684                         goto nla_put_failure;
2685
2686                 if (rdev->wiphy.bss_select_support) {
2687                         struct nlattr *nested;
2688                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2689
2690                         nested = nla_nest_start_noflag(msg,
2691                                                        NL80211_ATTR_BSS_SELECT);
2692                         if (!nested)
2693                                 goto nla_put_failure;
2694
2695                         i = 0;
2696                         while (bss_select_support) {
2697                                 if ((bss_select_support & 1) &&
2698                                     nla_put_flag(msg, i))
2699                                         goto nla_put_failure;
2700                                 i++;
2701                                 bss_select_support >>= 1;
2702                         }
2703                         nla_nest_end(msg, nested);
2704                 }
2705
2706                 state->split_start++;
2707                 break;
2708         case 13:
2709                 if (rdev->wiphy.num_iftype_ext_capab &&
2710                     rdev->wiphy.iftype_ext_capab) {
2711                         struct nlattr *nested_ext_capab, *nested;
2712
2713                         nested = nla_nest_start_noflag(msg,
2714                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2715                         if (!nested)
2716                                 goto nla_put_failure;
2717
2718                         for (i = state->capa_start;
2719                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2720                                 const struct wiphy_iftype_ext_capab *capab;
2721
2722                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2723
2724                                 nested_ext_capab = nla_nest_start_noflag(msg,
2725                                                                          i);
2726                                 if (!nested_ext_capab ||
2727                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2728                                                 capab->iftype) ||
2729                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2730                                             capab->extended_capabilities_len,
2731                                             capab->extended_capabilities) ||
2732                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2733                                             capab->extended_capabilities_len,
2734                                             capab->extended_capabilities_mask))
2735                                         goto nla_put_failure;
2736
2737                                 nla_nest_end(msg, nested_ext_capab);
2738                                 if (state->split)
2739                                         break;
2740                         }
2741                         nla_nest_end(msg, nested);
2742                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2743                                 state->capa_start = i + 1;
2744                                 break;
2745                         }
2746                 }
2747
2748                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2749                                 rdev->wiphy.nan_supported_bands))
2750                         goto nla_put_failure;
2751
2752                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2753                                             NL80211_EXT_FEATURE_TXQS)) {
2754                         struct cfg80211_txq_stats txqstats = {};
2755                         int res;
2756
2757                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2758                         if (!res &&
2759                             !nl80211_put_txq_stats(msg, &txqstats,
2760                                                    NL80211_ATTR_TXQ_STATS))
2761                                 goto nla_put_failure;
2762
2763                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2764                                         rdev->wiphy.txq_limit))
2765                                 goto nla_put_failure;
2766                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2767                                         rdev->wiphy.txq_memory_limit))
2768                                 goto nla_put_failure;
2769                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2770                                         rdev->wiphy.txq_quantum))
2771                                 goto nla_put_failure;
2772                 }
2773
2774                 state->split_start++;
2775                 break;
2776         case 14:
2777                 if (nl80211_send_pmsr_capa(rdev, msg))
2778                         goto nla_put_failure;
2779
2780                 state->split_start++;
2781                 break;
2782         case 15:
2783                 if (rdev->wiphy.akm_suites &&
2784                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2785                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2786                             rdev->wiphy.akm_suites))
2787                         goto nla_put_failure;
2788
2789                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2790                         goto nla_put_failure;
2791
2792                 if (nl80211_put_tid_config_support(rdev, msg))
2793                         goto nla_put_failure;
2794                 state->split_start++;
2795                 break;
2796         case 16:
2797                 if (nl80211_put_sar_specs(rdev, msg))
2798                         goto nla_put_failure;
2799
2800                 /* done */
2801                 state->split_start = 0;
2802                 break;
2803         }
2804  finish:
2805         genlmsg_end(msg, hdr);
2806         return 0;
2807
2808  nla_put_failure:
2809         genlmsg_cancel(msg, hdr);
2810         return -EMSGSIZE;
2811 }
2812
2813 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2814                                     struct netlink_callback *cb,
2815                                     struct nl80211_dump_wiphy_state *state)
2816 {
2817         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2818         int ret;
2819
2820         if (!tb)
2821                 return -ENOMEM;
2822
2823         ret = nlmsg_parse_deprecated(cb->nlh,
2824                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2825                                      tb, nl80211_fam.maxattr,
2826                                      nl80211_policy, NULL);
2827         /* ignore parse errors for backward compatibility */
2828         if (ret) {
2829                 ret = 0;
2830                 goto out;
2831         }
2832
2833         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2834         if (tb[NL80211_ATTR_WIPHY])
2835                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2836         if (tb[NL80211_ATTR_WDEV])
2837                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2838         if (tb[NL80211_ATTR_IFINDEX]) {
2839                 struct net_device *netdev;
2840                 struct cfg80211_registered_device *rdev;
2841                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2842
2843                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2844                 if (!netdev) {
2845                         ret = -ENODEV;
2846                         goto out;
2847                 }
2848                 if (netdev->ieee80211_ptr) {
2849                         rdev = wiphy_to_rdev(
2850                                 netdev->ieee80211_ptr->wiphy);
2851                         state->filter_wiphy = rdev->wiphy_idx;
2852                 }
2853         }
2854
2855         ret = 0;
2856 out:
2857         kfree(tb);
2858         return ret;
2859 }
2860
2861 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2862 {
2863         int idx = 0, ret;
2864         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2865         struct cfg80211_registered_device *rdev;
2866
2867         rtnl_lock();
2868         if (!state) {
2869                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2870                 if (!state) {
2871                         rtnl_unlock();
2872                         return -ENOMEM;
2873                 }
2874                 state->filter_wiphy = -1;
2875                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2876                 if (ret) {
2877                         kfree(state);
2878                         rtnl_unlock();
2879                         return ret;
2880                 }
2881                 cb->args[0] = (long)state;
2882         }
2883
2884         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2885                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2886                         continue;
2887                 if (++idx <= state->start)
2888                         continue;
2889                 if (state->filter_wiphy != -1 &&
2890                     state->filter_wiphy != rdev->wiphy_idx)
2891                         continue;
2892                 /* attempt to fit multiple wiphy data chunks into the skb */
2893                 do {
2894                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2895                                                  skb,
2896                                                  NETLINK_CB(cb->skb).portid,
2897                                                  cb->nlh->nlmsg_seq,
2898                                                  NLM_F_MULTI, state);
2899                         if (ret < 0) {
2900                                 /*
2901                                  * If sending the wiphy data didn't fit (ENOBUFS
2902                                  * or EMSGSIZE returned), this SKB is still
2903                                  * empty (so it's not too big because another
2904                                  * wiphy dataset is already in the skb) and
2905                                  * we've not tried to adjust the dump allocation
2906                                  * yet ... then adjust the alloc size to be
2907                                  * bigger, and return 1 but with the empty skb.
2908                                  * This results in an empty message being RX'ed
2909                                  * in userspace, but that is ignored.
2910                                  *
2911                                  * We can then retry with the larger buffer.
2912                                  */
2913                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2914                                     !skb->len && !state->split &&
2915                                     cb->min_dump_alloc < 4096) {
2916                                         cb->min_dump_alloc = 4096;
2917                                         state->split_start = 0;
2918                                         rtnl_unlock();
2919                                         return 1;
2920                                 }
2921                                 idx--;
2922                                 break;
2923                         }
2924                 } while (state->split_start > 0);
2925                 break;
2926         }
2927         rtnl_unlock();
2928
2929         state->start = idx;
2930
2931         return skb->len;
2932 }
2933
2934 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2935 {
2936         kfree((void *)cb->args[0]);
2937         return 0;
2938 }
2939
2940 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2941 {
2942         struct sk_buff *msg;
2943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2944         struct nl80211_dump_wiphy_state state = {};
2945
2946         msg = nlmsg_new(4096, GFP_KERNEL);
2947         if (!msg)
2948                 return -ENOMEM;
2949
2950         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2951                                info->snd_portid, info->snd_seq, 0,
2952                                &state) < 0) {
2953                 nlmsg_free(msg);
2954                 return -ENOBUFS;
2955         }
2956
2957         return genlmsg_reply(msg, info);
2958 }
2959
2960 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2961         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2962         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2963         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2964         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2965         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2966 };
2967
2968 static int parse_txq_params(struct nlattr *tb[],
2969                             struct ieee80211_txq_params *txq_params)
2970 {
2971         u8 ac;
2972
2973         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2974             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2975             !tb[NL80211_TXQ_ATTR_AIFS])
2976                 return -EINVAL;
2977
2978         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2979         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2980         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2981         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2982         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2983
2984         if (ac >= NL80211_NUM_ACS)
2985                 return -EINVAL;
2986         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2987         return 0;
2988 }
2989
2990 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2991 {
2992         /*
2993          * You can only set the channel explicitly for some interfaces,
2994          * most have their channel managed via their respective
2995          * "establish a connection" command (connect, join, ...)
2996          *
2997          * For AP/GO and mesh mode, the channel can be set with the
2998          * channel userspace API, but is only stored and passed to the
2999          * low-level driver when the AP starts or the mesh is joined.
3000          * This is for backward compatibility, userspace can also give
3001          * the channel in the start-ap or join-mesh commands instead.
3002          *
3003          * Monitors are special as they are normally slaved to
3004          * whatever else is going on, so they have their own special
3005          * operation to set the monitor channel if possible.
3006          */
3007         return !wdev ||
3008                 wdev->iftype == NL80211_IFTYPE_AP ||
3009                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3010                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3011                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3012 }
3013
3014 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3015                           struct genl_info *info,
3016                           struct cfg80211_chan_def *chandef)
3017 {
3018         struct netlink_ext_ack *extack = info->extack;
3019         struct nlattr **attrs = info->attrs;
3020         u32 control_freq;
3021
3022         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3023                 return -EINVAL;
3024
3025         control_freq = MHZ_TO_KHZ(
3026                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3027         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3028                 control_freq +=
3029                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3030
3031         memset(chandef, 0, sizeof(*chandef));
3032         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3033         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3034         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3035         chandef->freq1_offset = control_freq % 1000;
3036         chandef->center_freq2 = 0;
3037
3038         /* Primary channel not allowed */
3039         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3040                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3041                                     "Channel is disabled");
3042                 return -EINVAL;
3043         }
3044
3045         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3046                 enum nl80211_channel_type chantype;
3047
3048                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3049
3050                 switch (chantype) {
3051                 case NL80211_CHAN_NO_HT:
3052                 case NL80211_CHAN_HT20:
3053                 case NL80211_CHAN_HT40PLUS:
3054                 case NL80211_CHAN_HT40MINUS:
3055                         cfg80211_chandef_create(chandef, chandef->chan,
3056                                                 chantype);
3057                         /* user input for center_freq is incorrect */
3058                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3059                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3060                                 NL_SET_ERR_MSG_ATTR(extack,
3061                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3062                                                     "bad center frequency 1");
3063                                 return -EINVAL;
3064                         }
3065                         /* center_freq2 must be zero */
3066                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3067                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3068                                 NL_SET_ERR_MSG_ATTR(extack,
3069                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3070                                                     "center frequency 2 can't be used");
3071                                 return -EINVAL;
3072                         }
3073                         break;
3074                 default:
3075                         NL_SET_ERR_MSG_ATTR(extack,
3076                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3077                                             "invalid channel type");
3078                         return -EINVAL;
3079                 }
3080         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3081                 chandef->width =
3082                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3083                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3084                         /* User input error for channel width doesn't match channel  */
3085                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3086                                 NL_SET_ERR_MSG_ATTR(extack,
3087                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3088                                                     "bad channel width");
3089                                 return -EINVAL;
3090                         }
3091                 }
3092                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3093                         chandef->center_freq1 =
3094                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3095                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3096                                 chandef->freq1_offset = nla_get_u32(
3097                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3098                         else
3099                                 chandef->freq1_offset = 0;
3100                 }
3101                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3102                         chandef->center_freq2 =
3103                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3104         }
3105
3106         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3107                 chandef->edmg.channels =
3108                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3109
3110                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3111                         chandef->edmg.bw_config =
3112                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3113         } else {
3114                 chandef->edmg.bw_config = 0;
3115                 chandef->edmg.channels = 0;
3116         }
3117
3118         if (!cfg80211_chandef_valid(chandef)) {
3119                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3120                 return -EINVAL;
3121         }
3122
3123         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3124                                      IEEE80211_CHAN_DISABLED)) {
3125                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3126                 return -EINVAL;
3127         }
3128
3129         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3130              chandef->width == NL80211_CHAN_WIDTH_10) &&
3131             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3132                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3133                 return -EINVAL;
3134         }
3135
3136         return 0;
3137 }
3138
3139 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3140                                  struct net_device *dev,
3141                                  struct genl_info *info)
3142 {
3143         struct cfg80211_chan_def chandef;
3144         int result;
3145         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3146         struct wireless_dev *wdev = NULL;
3147
3148         if (dev)
3149                 wdev = dev->ieee80211_ptr;
3150         if (!nl80211_can_set_dev_channel(wdev))
3151                 return -EOPNOTSUPP;
3152         if (wdev)
3153                 iftype = wdev->iftype;
3154
3155         result = nl80211_parse_chandef(rdev, info, &chandef);
3156         if (result)
3157                 return result;
3158
3159         switch (iftype) {
3160         case NL80211_IFTYPE_AP:
3161         case NL80211_IFTYPE_P2P_GO:
3162                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3163                                                    iftype)) {
3164                         result = -EINVAL;
3165                         break;
3166                 }
3167                 if (wdev->beacon_interval) {
3168                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3169                             !(rdev->wiphy.features &
3170                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3171                                 result = -EBUSY;
3172                                 break;
3173                         }
3174
3175                         /* Only allow dynamic channel width changes */
3176                         if (chandef.chan != wdev->preset_chandef.chan) {
3177                                 result = -EBUSY;
3178                                 break;
3179                         }
3180                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3181                         if (result)
3182                                 break;
3183                 }
3184                 wdev->preset_chandef = chandef;
3185                 result = 0;
3186                 break;
3187         case NL80211_IFTYPE_MESH_POINT:
3188                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3189                 break;
3190         case NL80211_IFTYPE_MONITOR:
3191                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3192                 break;
3193         default:
3194                 result = -EINVAL;
3195         }
3196
3197         return result;
3198 }
3199
3200 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3201 {
3202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3203         struct net_device *netdev = info->user_ptr[1];
3204
3205         return __nl80211_set_channel(rdev, netdev, info);
3206 }
3207
3208 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3209 {
3210         struct cfg80211_registered_device *rdev = NULL;
3211         struct net_device *netdev = NULL;
3212         struct wireless_dev *wdev;
3213         int result = 0, rem_txq_params = 0;
3214         struct nlattr *nl_txq_params;
3215         u32 changed;
3216         u8 retry_short = 0, retry_long = 0;
3217         u32 frag_threshold = 0, rts_threshold = 0;
3218         u8 coverage_class = 0;
3219         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3220
3221         rtnl_lock();
3222         /*
3223          * Try to find the wiphy and netdev. Normally this
3224          * function shouldn't need the netdev, but this is
3225          * done for backward compatibility -- previously
3226          * setting the channel was done per wiphy, but now
3227          * it is per netdev. Previous userland like hostapd
3228          * also passed a netdev to set_wiphy, so that it is
3229          * possible to let that go to the right netdev!
3230          */
3231
3232         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3233                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3234
3235                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3236                 if (netdev && netdev->ieee80211_ptr)
3237                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3238                 else
3239                         netdev = NULL;
3240         }
3241
3242         if (!netdev) {
3243                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3244                                                   info->attrs);
3245                 if (IS_ERR(rdev)) {
3246                         rtnl_unlock();
3247                         return PTR_ERR(rdev);
3248                 }
3249                 wdev = NULL;
3250                 netdev = NULL;
3251                 result = 0;
3252         } else
3253                 wdev = netdev->ieee80211_ptr;
3254
3255         wiphy_lock(&rdev->wiphy);
3256
3257         /*
3258          * end workaround code, by now the rdev is available
3259          * and locked, and wdev may or may not be NULL.
3260          */
3261
3262         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3263                 result = cfg80211_dev_rename(
3264                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3265         rtnl_unlock();
3266
3267         if (result)
3268                 goto out;
3269
3270         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3271                 struct ieee80211_txq_params txq_params;
3272                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3273
3274                 if (!rdev->ops->set_txq_params) {
3275                         result = -EOPNOTSUPP;
3276                         goto out;
3277                 }
3278
3279                 if (!netdev) {
3280                         result = -EINVAL;
3281                         goto out;
3282                 }
3283
3284                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3285                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3286                         result = -EINVAL;
3287                         goto out;
3288                 }
3289
3290                 if (!netif_running(netdev)) {
3291                         result = -ENETDOWN;
3292                         goto out;
3293                 }
3294
3295                 nla_for_each_nested(nl_txq_params,
3296                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3297                                     rem_txq_params) {
3298                         result = nla_parse_nested_deprecated(tb,
3299                                                              NL80211_TXQ_ATTR_MAX,
3300                                                              nl_txq_params,
3301                                                              txq_params_policy,
3302                                                              info->extack);
3303                         if (result)
3304                                 goto out;
3305                         result = parse_txq_params(tb, &txq_params);
3306                         if (result)
3307                                 goto out;
3308
3309                         result = rdev_set_txq_params(rdev, netdev,
3310                                                      &txq_params);
3311                         if (result)
3312                                 goto out;
3313                 }
3314         }
3315
3316         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3317                 result = __nl80211_set_channel(
3318                         rdev,
3319                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3320                         info);
3321                 if (result)
3322                         goto out;
3323         }
3324
3325         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3326                 struct wireless_dev *txp_wdev = wdev;
3327                 enum nl80211_tx_power_setting type;
3328                 int idx, mbm = 0;
3329
3330                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3331                         txp_wdev = NULL;
3332
3333                 if (!rdev->ops->set_tx_power) {
3334                         result = -EOPNOTSUPP;
3335                         goto out;
3336                 }
3337
3338                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3339                 type = nla_get_u32(info->attrs[idx]);
3340
3341                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3342                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3343                         result = -EINVAL;
3344                         goto out;
3345                 }
3346
3347                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3348                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3349                         mbm = nla_get_u32(info->attrs[idx]);
3350                 }
3351
3352                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3353                 if (result)
3354                         goto out;
3355         }
3356
3357         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3358             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3359                 u32 tx_ant, rx_ant;
3360
3361                 if ((!rdev->wiphy.available_antennas_tx &&
3362                      !rdev->wiphy.available_antennas_rx) ||
3363                     !rdev->ops->set_antenna) {
3364                         result = -EOPNOTSUPP;
3365                         goto out;
3366                 }
3367
3368                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3369                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3370
3371                 /* reject antenna configurations which don't match the
3372                  * available antenna masks, except for the "all" mask */
3373                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3374                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3375                         result = -EINVAL;
3376                         goto out;
3377                 }
3378
3379                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3380                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3381
3382                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3383                 if (result)
3384                         goto out;
3385         }
3386
3387         changed = 0;
3388
3389         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3390                 retry_short = nla_get_u8(
3391                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3392
3393                 changed |= WIPHY_PARAM_RETRY_SHORT;
3394         }
3395
3396         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3397                 retry_long = nla_get_u8(
3398                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3399
3400                 changed |= WIPHY_PARAM_RETRY_LONG;
3401         }
3402
3403         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3404                 frag_threshold = nla_get_u32(
3405                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3406                 if (frag_threshold < 256) {
3407                         result = -EINVAL;
3408                         goto out;
3409                 }
3410
3411                 if (frag_threshold != (u32) -1) {
3412                         /*
3413                          * Fragments (apart from the last one) are required to
3414                          * have even length. Make the fragmentation code
3415                          * simpler by stripping LSB should someone try to use
3416                          * odd threshold value.
3417                          */
3418                         frag_threshold &= ~0x1;
3419                 }
3420                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3421         }
3422
3423         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3424                 rts_threshold = nla_get_u32(
3425                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3426                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3427         }
3428
3429         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3430                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3431                         result = -EINVAL;
3432                         goto out;
3433                 }
3434
3435                 coverage_class = nla_get_u8(
3436                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3437                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3438         }
3439
3440         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3441                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3442                         result = -EOPNOTSUPP;
3443                         goto out;
3444                 }
3445
3446                 changed |= WIPHY_PARAM_DYN_ACK;
3447         }
3448
3449         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3450                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3451                                              NL80211_EXT_FEATURE_TXQS)) {
3452                         result = -EOPNOTSUPP;
3453                         goto out;
3454                 }
3455                 txq_limit = nla_get_u32(
3456                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3457                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3458         }
3459
3460         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3461                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3462                                              NL80211_EXT_FEATURE_TXQS)) {
3463                         result = -EOPNOTSUPP;
3464                         goto out;
3465                 }
3466                 txq_memory_limit = nla_get_u32(
3467                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3468                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3469         }
3470
3471         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3472                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3473                                              NL80211_EXT_FEATURE_TXQS)) {
3474                         result = -EOPNOTSUPP;
3475                         goto out;
3476                 }
3477                 txq_quantum = nla_get_u32(
3478                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3479                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3480         }
3481
3482         if (changed) {
3483                 u8 old_retry_short, old_retry_long;
3484                 u32 old_frag_threshold, old_rts_threshold;
3485                 u8 old_coverage_class;
3486                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3487
3488                 if (!rdev->ops->set_wiphy_params) {
3489                         result = -EOPNOTSUPP;
3490                         goto out;
3491                 }
3492
3493                 old_retry_short = rdev->wiphy.retry_short;
3494                 old_retry_long = rdev->wiphy.retry_long;
3495                 old_frag_threshold = rdev->wiphy.frag_threshold;
3496                 old_rts_threshold = rdev->wiphy.rts_threshold;
3497                 old_coverage_class = rdev->wiphy.coverage_class;
3498                 old_txq_limit = rdev->wiphy.txq_limit;
3499                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3500                 old_txq_quantum = rdev->wiphy.txq_quantum;
3501
3502                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3503                         rdev->wiphy.retry_short = retry_short;
3504                 if (changed & WIPHY_PARAM_RETRY_LONG)
3505                         rdev->wiphy.retry_long = retry_long;
3506                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3507                         rdev->wiphy.frag_threshold = frag_threshold;
3508                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3509                         rdev->wiphy.rts_threshold = rts_threshold;
3510                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3511                         rdev->wiphy.coverage_class = coverage_class;
3512                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3513                         rdev->wiphy.txq_limit = txq_limit;
3514                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3515                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3516                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3517                         rdev->wiphy.txq_quantum = txq_quantum;
3518
3519                 result = rdev_set_wiphy_params(rdev, changed);
3520                 if (result) {
3521                         rdev->wiphy.retry_short = old_retry_short;
3522                         rdev->wiphy.retry_long = old_retry_long;
3523                         rdev->wiphy.frag_threshold = old_frag_threshold;
3524                         rdev->wiphy.rts_threshold = old_rts_threshold;
3525                         rdev->wiphy.coverage_class = old_coverage_class;
3526                         rdev->wiphy.txq_limit = old_txq_limit;
3527                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3528                         rdev->wiphy.txq_quantum = old_txq_quantum;
3529                         goto out;
3530                 }
3531         }
3532
3533         result = 0;
3534
3535 out:
3536         wiphy_unlock(&rdev->wiphy);
3537         return result;
3538 }
3539
3540 static int nl80211_send_chandef(struct sk_buff *msg,
3541                                 const struct cfg80211_chan_def *chandef)
3542 {
3543         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3544                 return -EINVAL;
3545
3546         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3547                         chandef->chan->center_freq))
3548                 return -ENOBUFS;
3549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3550                         chandef->chan->freq_offset))
3551                 return -ENOBUFS;
3552         switch (chandef->width) {
3553         case NL80211_CHAN_WIDTH_20_NOHT:
3554         case NL80211_CHAN_WIDTH_20:
3555         case NL80211_CHAN_WIDTH_40:
3556                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3557                                 cfg80211_get_chandef_type(chandef)))
3558                         return -ENOBUFS;
3559                 break;
3560         default:
3561                 break;
3562         }
3563         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3564                 return -ENOBUFS;
3565         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3566                 return -ENOBUFS;
3567         if (chandef->center_freq2 &&
3568             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3569                 return -ENOBUFS;
3570         return 0;
3571 }
3572
3573 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3574                               struct cfg80211_registered_device *rdev,
3575                               struct wireless_dev *wdev,
3576                               enum nl80211_commands cmd)
3577 {
3578         struct net_device *dev = wdev->netdev;
3579         void *hdr;
3580
3581         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3582                 cmd != NL80211_CMD_DEL_INTERFACE &&
3583                 cmd != NL80211_CMD_SET_INTERFACE);
3584
3585         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3586         if (!hdr)
3587                 return -1;
3588
3589         if (dev &&
3590             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3591              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3592                 goto nla_put_failure;
3593
3594         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3595             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3596             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3597                               NL80211_ATTR_PAD) ||
3598             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3599             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3600                         rdev->devlist_generation ^
3601                         (cfg80211_rdev_list_generation << 2)) ||
3602             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3603                 goto nla_put_failure;
3604
3605         if (rdev->ops->get_channel) {
3606                 int ret;
3607                 struct cfg80211_chan_def chandef = {};
3608
3609                 ret = rdev_get_channel(rdev, wdev, &chandef);
3610                 if (ret == 0) {
3611                         if (nl80211_send_chandef(msg, &chandef))
3612                                 goto nla_put_failure;
3613                 }
3614         }
3615
3616         if (rdev->ops->get_tx_power) {
3617                 int dbm, ret;
3618
3619                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3620                 if (ret == 0 &&
3621                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3622                                 DBM_TO_MBM(dbm)))
3623                         goto nla_put_failure;
3624         }
3625
3626         wdev_lock(wdev);
3627         switch (wdev->iftype) {
3628         case NL80211_IFTYPE_AP:
3629         case NL80211_IFTYPE_P2P_GO:
3630                 if (wdev->ssid_len &&
3631                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3632                         goto nla_put_failure_locked;
3633                 break;
3634         case NL80211_IFTYPE_STATION:
3635         case NL80211_IFTYPE_P2P_CLIENT:
3636         case NL80211_IFTYPE_ADHOC: {
3637                 const u8 *ssid_ie;
3638                 if (!wdev->current_bss)
3639                         break;
3640                 rcu_read_lock();
3641                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3642                                                WLAN_EID_SSID);
3643                 if (ssid_ie &&
3644                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3645                         goto nla_put_failure_rcu_locked;
3646                 rcu_read_unlock();
3647                 break;
3648                 }
3649         default:
3650                 /* nothing */
3651                 break;
3652         }
3653         wdev_unlock(wdev);
3654
3655         if (rdev->ops->get_txq_stats) {
3656                 struct cfg80211_txq_stats txqstats = {};
3657                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3658
3659                 if (ret == 0 &&
3660                     !nl80211_put_txq_stats(msg, &txqstats,
3661                                            NL80211_ATTR_TXQ_STATS))
3662                         goto nla_put_failure;
3663         }
3664
3665         genlmsg_end(msg, hdr);
3666         return 0;
3667
3668  nla_put_failure_rcu_locked:
3669         rcu_read_unlock();
3670  nla_put_failure_locked:
3671         wdev_unlock(wdev);
3672  nla_put_failure:
3673         genlmsg_cancel(msg, hdr);
3674         return -EMSGSIZE;
3675 }
3676
3677 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3678 {
3679         int wp_idx = 0;
3680         int if_idx = 0;
3681         int wp_start = cb->args[0];
3682         int if_start = cb->args[1];
3683         int filter_wiphy = -1;
3684         struct cfg80211_registered_device *rdev;
3685         struct wireless_dev *wdev;
3686         int ret;
3687
3688         rtnl_lock();
3689         if (!cb->args[2]) {
3690                 struct nl80211_dump_wiphy_state state = {
3691                         .filter_wiphy = -1,
3692                 };
3693
3694                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3695                 if (ret)
3696                         goto out_unlock;
3697
3698                 filter_wiphy = state.filter_wiphy;
3699
3700                 /*
3701                  * if filtering, set cb->args[2] to +1 since 0 is the default
3702                  * value needed to determine that parsing is necessary.
3703                  */
3704                 if (filter_wiphy >= 0)
3705                         cb->args[2] = filter_wiphy + 1;
3706                 else
3707                         cb->args[2] = -1;
3708         } else if (cb->args[2] > 0) {
3709                 filter_wiphy = cb->args[2] - 1;
3710         }
3711
3712         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3713                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3714                         continue;
3715                 if (wp_idx < wp_start) {
3716                         wp_idx++;
3717                         continue;
3718                 }
3719
3720                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3721                         continue;
3722
3723                 if_idx = 0;
3724
3725                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3726                         if (if_idx < if_start) {
3727                                 if_idx++;
3728                                 continue;
3729                         }
3730                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3731                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3732                                                rdev, wdev,
3733                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3734                                 goto out;
3735                         }
3736                         if_idx++;
3737                 }
3738
3739                 wp_idx++;
3740         }
3741  out:
3742         cb->args[0] = wp_idx;
3743         cb->args[1] = if_idx;
3744
3745         ret = skb->len;
3746  out_unlock:
3747         rtnl_unlock();
3748
3749         return ret;
3750 }
3751
3752 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3753 {
3754         struct sk_buff *msg;
3755         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3756         struct wireless_dev *wdev = info->user_ptr[1];
3757
3758         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3759         if (!msg)
3760                 return -ENOMEM;
3761
3762         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3763                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3764                 nlmsg_free(msg);
3765                 return -ENOBUFS;
3766         }
3767
3768         return genlmsg_reply(msg, info);
3769 }
3770
3771 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3772         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3773         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3774         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3775         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3776         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3777         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3778 };
3779
3780 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3781 {
3782         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3783         int flag;
3784
3785         *mntrflags = 0;
3786
3787         if (!nla)
3788                 return -EINVAL;
3789
3790         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3791                 return -EINVAL;
3792
3793         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3794                 if (flags[flag])
3795                         *mntrflags |= (1<<flag);
3796
3797         *mntrflags |= MONITOR_FLAG_CHANGED;
3798
3799         return 0;
3800 }
3801
3802 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3803                                      enum nl80211_iftype type,
3804                                      struct genl_info *info,
3805                                      struct vif_params *params)
3806 {
3807         bool change = false;
3808         int err;
3809
3810         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3811                 if (type != NL80211_IFTYPE_MONITOR)
3812                         return -EINVAL;
3813
3814                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3815                                           &params->flags);
3816                 if (err)
3817                         return err;
3818
3819                 change = true;
3820         }
3821
3822         if (params->flags & MONITOR_FLAG_ACTIVE &&
3823             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3824                 return -EOPNOTSUPP;
3825
3826         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3827                 const u8 *mumimo_groups;
3828                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3829
3830                 if (type != NL80211_IFTYPE_MONITOR)
3831                         return -EINVAL;
3832
3833                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3834                         return -EOPNOTSUPP;
3835
3836                 mumimo_groups =
3837                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3838
3839                 /* bits 0 and 63 are reserved and must be zero */
3840                 if ((mumimo_groups[0] & BIT(0)) ||
3841                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3842                         return -EINVAL;
3843
3844                 params->vht_mumimo_groups = mumimo_groups;
3845                 change = true;
3846         }
3847
3848         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3849                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3850
3851                 if (type != NL80211_IFTYPE_MONITOR)
3852                         return -EINVAL;
3853
3854                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3855                         return -EOPNOTSUPP;
3856
3857                 params->vht_mumimo_follow_addr =
3858                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3859                 change = true;
3860         }
3861
3862         return change ? 1 : 0;
3863 }
3864
3865 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3866                                struct net_device *netdev, u8 use_4addr,
3867                                enum nl80211_iftype iftype)
3868 {
3869         if (!use_4addr) {
3870                 if (netdev && netif_is_bridge_port(netdev))
3871                         return -EBUSY;
3872                 return 0;
3873         }
3874
3875         switch (iftype) {
3876         case NL80211_IFTYPE_AP_VLAN:
3877                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3878                         return 0;
3879                 break;
3880         case NL80211_IFTYPE_STATION:
3881                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3882                         return 0;
3883                 break;
3884         default:
3885                 break;
3886         }
3887
3888         return -EOPNOTSUPP;
3889 }
3890
3891 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3892 {
3893         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3894         struct vif_params params;
3895         int err;
3896         enum nl80211_iftype otype, ntype;
3897         struct net_device *dev = info->user_ptr[1];
3898         bool change = false;
3899
3900         memset(&params, 0, sizeof(params));
3901
3902         otype = ntype = dev->ieee80211_ptr->iftype;
3903
3904         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3905                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3906                 if (otype != ntype)
3907                         change = true;
3908         }
3909
3910         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3911                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3912
3913                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3914                         return -EINVAL;
3915                 if (netif_running(dev))
3916                         return -EBUSY;
3917
3918                 wdev_lock(wdev);
3919                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3920                              IEEE80211_MAX_MESH_ID_LEN);
3921                 wdev->mesh_id_up_len =
3922                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3923                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3924                        wdev->mesh_id_up_len);
3925                 wdev_unlock(wdev);
3926         }
3927
3928         if (info->attrs[NL80211_ATTR_4ADDR]) {
3929                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3930                 change = true;
3931                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3932                 if (err)
3933                         return err;
3934         } else {
3935                 params.use_4addr = -1;
3936         }
3937
3938         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3939         if (err < 0)
3940                 return err;
3941         if (err > 0)
3942                 change = true;
3943
3944         if (change)
3945                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3946         else
3947                 err = 0;
3948
3949         if (!err && params.use_4addr != -1)
3950                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3951
3952         if (change && !err) {
3953                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3954
3955                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3956         }
3957
3958         return err;
3959 }
3960
3961 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3962 {
3963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3964         struct vif_params params;
3965         struct wireless_dev *wdev;
3966         struct sk_buff *msg;
3967         int err;
3968         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3969
3970         memset(&params, 0, sizeof(params));
3971
3972         if (!info->attrs[NL80211_ATTR_IFNAME])
3973                 return -EINVAL;
3974
3975         if (info->attrs[NL80211_ATTR_IFTYPE])
3976                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3977
3978         if (!rdev->ops->add_virtual_intf)
3979                 return -EOPNOTSUPP;
3980
3981         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3982              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3983             info->attrs[NL80211_ATTR_MAC]) {
3984                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3985                            ETH_ALEN);
3986                 if (!is_valid_ether_addr(params.macaddr))
3987                         return -EADDRNOTAVAIL;
3988         }
3989
3990         if (info->attrs[NL80211_ATTR_4ADDR]) {
3991                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3992                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3993                 if (err)
3994                         return err;
3995         }
3996
3997         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3998                 return -EOPNOTSUPP;
3999
4000         err = nl80211_parse_mon_options(rdev, type, info, &params);
4001         if (err < 0)
4002                 return err;
4003
4004         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4005         if (!msg)
4006                 return -ENOMEM;
4007
4008         wdev = rdev_add_virtual_intf(rdev,
4009                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4010                                 NET_NAME_USER, type, &params);
4011         if (WARN_ON(!wdev)) {
4012                 nlmsg_free(msg);
4013                 return -EPROTO;
4014         } else if (IS_ERR(wdev)) {
4015                 nlmsg_free(msg);
4016                 return PTR_ERR(wdev);
4017         }
4018
4019         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4020                 wdev->owner_nlportid = info->snd_portid;
4021
4022         switch (type) {
4023         case NL80211_IFTYPE_MESH_POINT:
4024                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4025                         break;
4026                 wdev_lock(wdev);
4027                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4028                              IEEE80211_MAX_MESH_ID_LEN);
4029                 wdev->mesh_id_up_len =
4030                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4031                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4032                        wdev->mesh_id_up_len);
4033                 wdev_unlock(wdev);
4034                 break;
4035         case NL80211_IFTYPE_NAN:
4036         case NL80211_IFTYPE_P2P_DEVICE:
4037                 /*
4038                  * P2P Device and NAN do not have a netdev, so don't go
4039                  * through the netdev notifier and must be added here
4040                  */
4041                 cfg80211_init_wdev(wdev);
4042                 cfg80211_register_wdev(rdev, wdev);
4043                 break;
4044         default:
4045                 break;
4046         }
4047
4048         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4049                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4050                 nlmsg_free(msg);
4051                 return -ENOBUFS;
4052         }
4053
4054         return genlmsg_reply(msg, info);
4055 }
4056
4057 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4058 {
4059         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4060         int ret;
4061
4062         /* to avoid failing a new interface creation due to pending removal */
4063         cfg80211_destroy_ifaces(rdev);
4064
4065         wiphy_lock(&rdev->wiphy);
4066         ret = _nl80211_new_interface(skb, info);
4067         wiphy_unlock(&rdev->wiphy);
4068
4069         return ret;
4070 }
4071
4072 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4073 {
4074         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4075         struct wireless_dev *wdev = info->user_ptr[1];
4076
4077         if (!rdev->ops->del_virtual_intf)
4078                 return -EOPNOTSUPP;
4079
4080         /*
4081          * We hold RTNL, so this is safe, without RTNL opencount cannot
4082          * reach 0, and thus the rdev cannot be deleted.
4083          *
4084          * We need to do it for the dev_close(), since that will call
4085          * the netdev notifiers, and we need to acquire the mutex there
4086          * but don't know if we get there from here or from some other
4087          * place (e.g. "ip link set ... down").
4088          */
4089         mutex_unlock(&rdev->wiphy.mtx);
4090
4091         /*
4092          * If we remove a wireless device without a netdev then clear
4093          * user_ptr[1] so that nl80211_post_doit won't dereference it
4094          * to check if it needs to do dev_put(). Otherwise it crashes
4095          * since the wdev has been freed, unlike with a netdev where
4096          * we need the dev_put() for the netdev to really be freed.
4097          */
4098         if (!wdev->netdev)
4099                 info->user_ptr[1] = NULL;
4100         else
4101                 dev_close(wdev->netdev);
4102
4103         mutex_lock(&rdev->wiphy.mtx);
4104
4105         return rdev_del_virtual_intf(rdev, wdev);
4106 }
4107
4108 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4109 {
4110         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4111         struct net_device *dev = info->user_ptr[1];
4112         u16 noack_map;
4113
4114         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4115                 return -EINVAL;
4116
4117         if (!rdev->ops->set_noack_map)
4118                 return -EOPNOTSUPP;
4119
4120         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4121
4122         return rdev_set_noack_map(rdev, dev, noack_map);
4123 }
4124
4125 struct get_key_cookie {
4126         struct sk_buff *msg;
4127         int error;
4128         int idx;
4129 };
4130
4131 static void get_key_callback(void *c, struct key_params *params)
4132 {
4133         struct nlattr *key;
4134         struct get_key_cookie *cookie = c;
4135
4136         if ((params->key &&
4137              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4138                      params->key_len, params->key)) ||
4139             (params->seq &&
4140              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4141                      params->seq_len, params->seq)) ||
4142             (params->cipher &&
4143              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4144                          params->cipher)))
4145                 goto nla_put_failure;
4146
4147         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4148         if (!key)
4149                 goto nla_put_failure;
4150
4151         if ((params->key &&
4152              nla_put(cookie->msg, NL80211_KEY_DATA,
4153                      params->key_len, params->key)) ||
4154             (params->seq &&
4155              nla_put(cookie->msg, NL80211_KEY_SEQ,
4156                      params->seq_len, params->seq)) ||
4157             (params->cipher &&
4158              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4159                          params->cipher)))
4160                 goto nla_put_failure;
4161
4162         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4163                 goto nla_put_failure;
4164
4165         nla_nest_end(cookie->msg, key);
4166
4167         return;
4168  nla_put_failure:
4169         cookie->error = 1;
4170 }
4171
4172 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4173 {
4174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4175         int err;
4176         struct net_device *dev = info->user_ptr[1];
4177         u8 key_idx = 0;
4178         const u8 *mac_addr = NULL;
4179         bool pairwise;
4180         struct get_key_cookie cookie = {
4181                 .error = 0,
4182         };
4183         void *hdr;
4184         struct sk_buff *msg;
4185         bool bigtk_support = false;
4186
4187         if (wiphy_ext_feature_isset(&rdev->wiphy,
4188                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4189                 bigtk_support = true;
4190
4191         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4192              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4193             wiphy_ext_feature_isset(&rdev->wiphy,
4194                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4195                 bigtk_support = true;
4196
4197         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4198                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4199
4200                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4201                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4202                         return -EINVAL;
4203                 }
4204         }
4205
4206         if (info->attrs[NL80211_ATTR_MAC])
4207                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4208
4209         pairwise = !!mac_addr;
4210         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4211                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4212
4213                 if (kt != NL80211_KEYTYPE_GROUP &&
4214                     kt != NL80211_KEYTYPE_PAIRWISE)
4215                         return -EINVAL;
4216                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4217         }
4218
4219         if (!rdev->ops->get_key)
4220                 return -EOPNOTSUPP;
4221
4222         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4223                 return -ENOENT;
4224
4225         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4226         if (!msg)
4227                 return -ENOMEM;
4228
4229         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4230                              NL80211_CMD_NEW_KEY);
4231         if (!hdr)
4232                 goto nla_put_failure;
4233
4234         cookie.msg = msg;
4235         cookie.idx = key_idx;
4236
4237         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4238             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4239                 goto nla_put_failure;
4240         if (mac_addr &&
4241             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4242                 goto nla_put_failure;
4243
4244         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4245                            get_key_callback);
4246
4247         if (err)
4248                 goto free_msg;
4249
4250         if (cookie.error)
4251                 goto nla_put_failure;
4252
4253         genlmsg_end(msg, hdr);
4254         return genlmsg_reply(msg, info);
4255
4256  nla_put_failure:
4257         err = -ENOBUFS;
4258  free_msg:
4259         nlmsg_free(msg);
4260         return err;
4261 }
4262
4263 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4264 {
4265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4266         struct key_parse key;
4267         int err;
4268         struct net_device *dev = info->user_ptr[1];
4269
4270         err = nl80211_parse_key(info, &key);
4271         if (err)
4272                 return err;
4273
4274         if (key.idx < 0)
4275                 return -EINVAL;
4276
4277         /* Only support setting default key and
4278          * Extended Key ID action NL80211_KEY_SET_TX.
4279          */
4280         if (!key.def && !key.defmgmt && !key.defbeacon &&
4281             !(key.p.mode == NL80211_KEY_SET_TX))
4282                 return -EINVAL;
4283
4284         wdev_lock(dev->ieee80211_ptr);
4285
4286         if (key.def) {
4287                 if (!rdev->ops->set_default_key) {
4288                         err = -EOPNOTSUPP;
4289                         goto out;
4290                 }
4291
4292                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4293                 if (err)
4294                         goto out;
4295
4296                 err = rdev_set_default_key(rdev, dev, key.idx,
4297                                                  key.def_uni, key.def_multi);
4298
4299                 if (err)
4300                         goto out;
4301
4302 #ifdef CONFIG_CFG80211_WEXT
4303                 dev->ieee80211_ptr->wext.default_key = key.idx;
4304 #endif
4305         } else if (key.defmgmt) {
4306                 if (key.def_uni || !key.def_multi) {
4307                         err = -EINVAL;
4308                         goto out;
4309                 }
4310
4311                 if (!rdev->ops->set_default_mgmt_key) {
4312                         err = -EOPNOTSUPP;
4313                         goto out;
4314                 }
4315
4316                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4317                 if (err)
4318                         goto out;
4319
4320                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4321                 if (err)
4322                         goto out;
4323
4324 #ifdef CONFIG_CFG80211_WEXT
4325                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4326 #endif
4327         } else if (key.defbeacon) {
4328                 if (key.def_uni || !key.def_multi) {
4329                         err = -EINVAL;
4330                         goto out;
4331                 }
4332
4333                 if (!rdev->ops->set_default_beacon_key) {
4334                         err = -EOPNOTSUPP;
4335                         goto out;
4336                 }
4337
4338                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4339                 if (err)
4340                         goto out;
4341
4342                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4343                 if (err)
4344                         goto out;
4345         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4346                    wiphy_ext_feature_isset(&rdev->wiphy,
4347                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4348                 u8 *mac_addr = NULL;
4349
4350                 if (info->attrs[NL80211_ATTR_MAC])
4351                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4352
4353                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4354                         err = -EINVAL;
4355                         goto out;
4356                 }
4357
4358                 err = rdev_add_key(rdev, dev, key.idx,
4359                                    NL80211_KEYTYPE_PAIRWISE,
4360                                    mac_addr, &key.p);
4361         } else {
4362                 err = -EINVAL;
4363         }
4364  out:
4365         wdev_unlock(dev->ieee80211_ptr);
4366
4367         return err;
4368 }
4369
4370 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4371 {
4372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373         int err;
4374         struct net_device *dev = info->user_ptr[1];
4375         struct key_parse key;
4376         const u8 *mac_addr = NULL;
4377
4378         err = nl80211_parse_key(info, &key);
4379         if (err)
4380                 return err;
4381
4382         if (!key.p.key) {
4383                 GENL_SET_ERR_MSG(info, "no key");
4384                 return -EINVAL;
4385         }
4386
4387         if (info->attrs[NL80211_ATTR_MAC])
4388                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4389
4390         if (key.type == -1) {
4391                 if (mac_addr)
4392                         key.type = NL80211_KEYTYPE_PAIRWISE;
4393                 else
4394                         key.type = NL80211_KEYTYPE_GROUP;
4395         }
4396
4397         /* for now */
4398         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4399             key.type != NL80211_KEYTYPE_GROUP) {
4400                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4401                 return -EINVAL;
4402         }
4403
4404         if (key.type == NL80211_KEYTYPE_GROUP &&
4405             info->attrs[NL80211_ATTR_VLAN_ID])
4406                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4407
4408         if (!rdev->ops->add_key)
4409                 return -EOPNOTSUPP;
4410
4411         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4412                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4413                                            mac_addr)) {
4414                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4415                 return -EINVAL;
4416         }
4417
4418         wdev_lock(dev->ieee80211_ptr);
4419         err = nl80211_key_allowed(dev->ieee80211_ptr);
4420         if (err)
4421                 GENL_SET_ERR_MSG(info, "key not allowed");
4422         if (!err) {
4423                 err = rdev_add_key(rdev, dev, key.idx,
4424                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4425                                     mac_addr, &key.p);
4426                 if (err)
4427                         GENL_SET_ERR_MSG(info, "key addition failed");
4428         }
4429         wdev_unlock(dev->ieee80211_ptr);
4430
4431         return err;
4432 }
4433
4434 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4435 {
4436         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4437         int err;
4438         struct net_device *dev = info->user_ptr[1];
4439         u8 *mac_addr = NULL;
4440         struct key_parse key;
4441
4442         err = nl80211_parse_key(info, &key);
4443         if (err)
4444                 return err;
4445
4446         if (info->attrs[NL80211_ATTR_MAC])
4447                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4448
4449         if (key.type == -1) {
4450                 if (mac_addr)
4451                         key.type = NL80211_KEYTYPE_PAIRWISE;
4452                 else
4453                         key.type = NL80211_KEYTYPE_GROUP;
4454         }
4455
4456         /* for now */
4457         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4458             key.type != NL80211_KEYTYPE_GROUP)
4459                 return -EINVAL;
4460
4461         if (!cfg80211_valid_key_idx(rdev, key.idx,
4462                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4463                 return -EINVAL;
4464
4465         if (!rdev->ops->del_key)
4466                 return -EOPNOTSUPP;
4467
4468         wdev_lock(dev->ieee80211_ptr);
4469         err = nl80211_key_allowed(dev->ieee80211_ptr);
4470
4471         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4472             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4473                 err = -ENOENT;
4474
4475         if (!err)
4476                 err = rdev_del_key(rdev, dev, key.idx,
4477                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4478                                    mac_addr);
4479
4480 #ifdef CONFIG_CFG80211_WEXT
4481         if (!err) {
4482                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4483                         dev->ieee80211_ptr->wext.default_key = -1;
4484                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4485                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4486         }
4487 #endif
4488         wdev_unlock(dev->ieee80211_ptr);
4489
4490         return err;
4491 }
4492
4493 /* This function returns an error or the number of nested attributes */
4494 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4495 {
4496         struct nlattr *attr;
4497         int n_entries = 0, tmp;
4498
4499         nla_for_each_nested(attr, nl_attr, tmp) {
4500                 if (nla_len(attr) != ETH_ALEN)
4501                         return -EINVAL;
4502
4503                 n_entries++;
4504         }
4505
4506         return n_entries;
4507 }
4508
4509 /*
4510  * This function parses ACL information and allocates memory for ACL data.
4511  * On successful return, the calling function is responsible to free the
4512  * ACL buffer returned by this function.
4513  */
4514 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4515                                                 struct genl_info *info)
4516 {
4517         enum nl80211_acl_policy acl_policy;
4518         struct nlattr *attr;
4519         struct cfg80211_acl_data *acl;
4520         int i = 0, n_entries, tmp;
4521
4522         if (!wiphy->max_acl_mac_addrs)
4523                 return ERR_PTR(-EOPNOTSUPP);
4524
4525         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4526                 return ERR_PTR(-EINVAL);
4527
4528         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4529         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4530             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4531                 return ERR_PTR(-EINVAL);
4532
4533         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4534                 return ERR_PTR(-EINVAL);
4535
4536         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4537         if (n_entries < 0)
4538                 return ERR_PTR(n_entries);
4539
4540         if (n_entries > wiphy->max_acl_mac_addrs)
4541                 return ERR_PTR(-ENOTSUPP);
4542
4543         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4544         if (!acl)
4545                 return ERR_PTR(-ENOMEM);
4546
4547         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4548                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4549                 i++;
4550         }
4551
4552         acl->n_acl_entries = n_entries;
4553         acl->acl_policy = acl_policy;
4554
4555         return acl;
4556 }
4557
4558 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4559 {
4560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4561         struct net_device *dev = info->user_ptr[1];
4562         struct cfg80211_acl_data *acl;
4563         int err;
4564
4565         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4566             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4567                 return -EOPNOTSUPP;
4568
4569         if (!dev->ieee80211_ptr->beacon_interval)
4570                 return -EINVAL;
4571
4572         acl = parse_acl_data(&rdev->wiphy, info);
4573         if (IS_ERR(acl))
4574                 return PTR_ERR(acl);
4575
4576         err = rdev_set_mac_acl(rdev, dev, acl);
4577
4578         kfree(acl);
4579
4580         return err;
4581 }
4582
4583 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4584                            u8 *rates, u8 rates_len)
4585 {
4586         u8 i;
4587         u32 mask = 0;
4588
4589         for (i = 0; i < rates_len; i++) {
4590                 int rate = (rates[i] & 0x7f) * 5;
4591                 int ridx;
4592
4593                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4594                         struct ieee80211_rate *srate =
4595                                 &sband->bitrates[ridx];
4596                         if (rate == srate->bitrate) {
4597                                 mask |= 1 << ridx;
4598                                 break;
4599                         }
4600                 }
4601                 if (ridx == sband->n_bitrates)
4602                         return 0; /* rate not found */
4603         }
4604
4605         return mask;
4606 }
4607
4608 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4609                                u8 *rates, u8 rates_len,
4610                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4611 {
4612         u8 i;
4613
4614         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4615
4616         for (i = 0; i < rates_len; i++) {
4617                 int ridx, rbit;
4618
4619                 ridx = rates[i] / 8;
4620                 rbit = BIT(rates[i] % 8);
4621
4622                 /* check validity */
4623                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4624                         return false;
4625
4626                 /* check availability */
4627                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4628                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4629                         mcs[ridx] |= rbit;
4630                 else
4631                         return false;
4632         }
4633
4634         return true;
4635 }
4636
4637 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4638 {
4639         u16 mcs_mask = 0;
4640
4641         switch (vht_mcs_map) {
4642         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4643                 break;
4644         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4645                 mcs_mask = 0x00FF;
4646                 break;
4647         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4648                 mcs_mask = 0x01FF;
4649                 break;
4650         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4651                 mcs_mask = 0x03FF;
4652                 break;
4653         default:
4654                 break;
4655         }
4656
4657         return mcs_mask;
4658 }
4659
4660 static void vht_build_mcs_mask(u16 vht_mcs_map,
4661                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4662 {
4663         u8 nss;
4664
4665         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4666                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4667                 vht_mcs_map >>= 2;
4668         }
4669 }
4670
4671 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4672                              struct nl80211_txrate_vht *txrate,
4673                              u16 mcs[NL80211_VHT_NSS_MAX])
4674 {
4675         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4676         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4677         u8 i;
4678
4679         if (!sband->vht_cap.vht_supported)
4680                 return false;
4681
4682         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4683
4684         /* Build vht_mcs_mask from VHT capabilities */
4685         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4686
4687         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4688                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4689                         mcs[i] = txrate->mcs[i];
4690                 else
4691                         return false;
4692         }
4693
4694         return true;
4695 }
4696
4697 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4698 {
4699         switch (he_mcs_map) {
4700         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4701                 return 0;
4702         case IEEE80211_HE_MCS_SUPPORT_0_7:
4703                 return 0x00FF;
4704         case IEEE80211_HE_MCS_SUPPORT_0_9:
4705                 return 0x03FF;
4706         case IEEE80211_HE_MCS_SUPPORT_0_11:
4707                 return 0xFFF;
4708         default:
4709                 break;
4710         }
4711         return 0;
4712 }
4713
4714 static void he_build_mcs_mask(u16 he_mcs_map,
4715                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4716 {
4717         u8 nss;
4718
4719         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4720                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4721                 he_mcs_map >>= 2;
4722         }
4723 }
4724
4725 static u16 he_get_txmcsmap(struct genl_info *info,
4726                            const struct ieee80211_sta_he_cap *he_cap)
4727 {
4728         struct net_device *dev = info->user_ptr[1];
4729         struct wireless_dev *wdev = dev->ieee80211_ptr;
4730         __le16  tx_mcs;
4731
4732         switch (wdev->chandef.width) {
4733         case NL80211_CHAN_WIDTH_80P80:
4734                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4735                 break;
4736         case NL80211_CHAN_WIDTH_160:
4737                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4738                 break;
4739         default:
4740                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4741                 break;
4742         }
4743         return le16_to_cpu(tx_mcs);
4744 }
4745
4746 static bool he_set_mcs_mask(struct genl_info *info,
4747                             struct wireless_dev *wdev,
4748                             struct ieee80211_supported_band *sband,
4749                             struct nl80211_txrate_he *txrate,
4750                             u16 mcs[NL80211_HE_NSS_MAX])
4751 {
4752         const struct ieee80211_sta_he_cap *he_cap;
4753         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4754         u16 tx_mcs_map = 0;
4755         u8 i;
4756
4757         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4758         if (!he_cap)
4759                 return false;
4760
4761         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4762
4763         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4764
4765         /* Build he_mcs_mask from HE capabilities */
4766         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4767
4768         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4769                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4770                         mcs[i] = txrate->mcs[i];
4771                 else
4772                         return false;
4773         }
4774
4775         return true;
4776 }
4777
4778 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4779                                          struct nlattr *attrs[],
4780                                          enum nl80211_attrs attr,
4781                                          struct cfg80211_bitrate_mask *mask,
4782                                          struct net_device *dev,
4783                                          bool default_all_enabled)
4784 {
4785         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4787         struct wireless_dev *wdev = dev->ieee80211_ptr;
4788         int rem, i;
4789         struct nlattr *tx_rates;
4790         struct ieee80211_supported_band *sband;
4791         u16 vht_tx_mcs_map, he_tx_mcs_map;
4792
4793         memset(mask, 0, sizeof(*mask));
4794         /* Default to all rates enabled */
4795         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4796                 const struct ieee80211_sta_he_cap *he_cap;
4797
4798                 if (!default_all_enabled)
4799                         break;
4800
4801                 sband = rdev->wiphy.bands[i];
4802
4803                 if (!sband)
4804                         continue;
4805
4806                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4807                 memcpy(mask->control[i].ht_mcs,
4808                        sband->ht_cap.mcs.rx_mask,
4809                        sizeof(mask->control[i].ht_mcs));
4810
4811                 if (sband->vht_cap.vht_supported) {
4812                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4813                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4814                 }
4815
4816                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4817                 if (!he_cap)
4818                         continue;
4819
4820                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4821                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4822
4823                 mask->control[i].he_gi = 0xFF;
4824                 mask->control[i].he_ltf = 0xFF;
4825         }
4826
4827         /* if no rates are given set it back to the defaults */
4828         if (!attrs[attr])
4829                 goto out;
4830
4831         /* The nested attribute uses enum nl80211_band as the index. This maps
4832          * directly to the enum nl80211_band values used in cfg80211.
4833          */
4834         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4835         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4836                 enum nl80211_band band = nla_type(tx_rates);
4837                 int err;
4838
4839                 if (band < 0 || band >= NUM_NL80211_BANDS)
4840                         return -EINVAL;
4841                 sband = rdev->wiphy.bands[band];
4842                 if (sband == NULL)
4843                         return -EINVAL;
4844                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4845                                                   tx_rates,
4846                                                   nl80211_txattr_policy,
4847                                                   info->extack);
4848                 if (err)
4849                         return err;
4850                 if (tb[NL80211_TXRATE_LEGACY]) {
4851                         mask->control[band].legacy = rateset_to_mask(
4852                                 sband,
4853                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4854                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4855                         if ((mask->control[band].legacy == 0) &&
4856                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4857                                 return -EINVAL;
4858                 }
4859                 if (tb[NL80211_TXRATE_HT]) {
4860                         if (!ht_rateset_to_mask(
4861                                         sband,
4862                                         nla_data(tb[NL80211_TXRATE_HT]),
4863                                         nla_len(tb[NL80211_TXRATE_HT]),
4864                                         mask->control[band].ht_mcs))
4865                                 return -EINVAL;
4866                 }
4867
4868                 if (tb[NL80211_TXRATE_VHT]) {
4869                         if (!vht_set_mcs_mask(
4870                                         sband,
4871                                         nla_data(tb[NL80211_TXRATE_VHT]),
4872                                         mask->control[band].vht_mcs))
4873                                 return -EINVAL;
4874                 }
4875
4876                 if (tb[NL80211_TXRATE_GI]) {
4877                         mask->control[band].gi =
4878                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4879                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4880                                 return -EINVAL;
4881                 }
4882                 if (tb[NL80211_TXRATE_HE] &&
4883                     !he_set_mcs_mask(info, wdev, sband,
4884                                      nla_data(tb[NL80211_TXRATE_HE]),
4885                                      mask->control[band].he_mcs))
4886                         return -EINVAL;
4887
4888                 if (tb[NL80211_TXRATE_HE_GI])
4889                         mask->control[band].he_gi =
4890                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4891                 if (tb[NL80211_TXRATE_HE_LTF])
4892                         mask->control[band].he_ltf =
4893                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4894
4895                 if (mask->control[band].legacy == 0) {
4896                         /* don't allow empty legacy rates if HT, VHT or HE
4897                          * are not even supported.
4898                          */
4899                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4900                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4901                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4902                                 return -EINVAL;
4903
4904                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4905                                 if (mask->control[band].ht_mcs[i])
4906                                         goto out;
4907
4908                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4909                                 if (mask->control[band].vht_mcs[i])
4910                                         goto out;
4911
4912                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4913                                 if (mask->control[band].he_mcs[i])
4914                                         goto out;
4915
4916                         /* legacy and mcs rates may not be both empty */
4917                         return -EINVAL;
4918                 }
4919         }
4920
4921 out:
4922         return 0;
4923 }
4924
4925 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4926                                    enum nl80211_band band,
4927                                    struct cfg80211_bitrate_mask *beacon_rate)
4928 {
4929         u32 count_ht, count_vht, count_he, i;
4930         u32 rate = beacon_rate->control[band].legacy;
4931
4932         /* Allow only one rate */
4933         if (hweight32(rate) > 1)
4934                 return -EINVAL;
4935
4936         count_ht = 0;
4937         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4938                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4939                         return -EINVAL;
4940                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4941                         count_ht++;
4942                         if (count_ht > 1)
4943                                 return -EINVAL;
4944                 }
4945                 if (count_ht && rate)
4946                         return -EINVAL;
4947         }
4948
4949         count_vht = 0;
4950         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4951                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4952                         return -EINVAL;
4953                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4954                         count_vht++;
4955                         if (count_vht > 1)
4956                                 return -EINVAL;
4957                 }
4958                 if (count_vht && rate)
4959                         return -EINVAL;
4960         }
4961
4962         count_he = 0;
4963         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4964                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4965                         return -EINVAL;
4966                 } else if (beacon_rate->control[band].he_mcs[i]) {
4967                         count_he++;
4968                         if (count_he > 1)
4969                                 return -EINVAL;
4970                 }
4971                 if (count_he && rate)
4972                         return -EINVAL;
4973         }
4974
4975         if ((count_ht && count_vht && count_he) ||
4976             (!rate && !count_ht && !count_vht && !count_he))
4977                 return -EINVAL;
4978
4979         if (rate &&
4980             !wiphy_ext_feature_isset(&rdev->wiphy,
4981                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4982                 return -EINVAL;
4983         if (count_ht &&
4984             !wiphy_ext_feature_isset(&rdev->wiphy,
4985                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4986                 return -EINVAL;
4987         if (count_vht &&
4988             !wiphy_ext_feature_isset(&rdev->wiphy,
4989                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4990                 return -EINVAL;
4991         if (count_he &&
4992             !wiphy_ext_feature_isset(&rdev->wiphy,
4993                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
4994                 return -EINVAL;
4995
4996         return 0;
4997 }
4998
4999 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5000                                 struct nlattr *attrs[],
5001                                 struct cfg80211_beacon_data *bcn)
5002 {
5003         bool haveinfo = false;
5004         int err;
5005
5006         memset(bcn, 0, sizeof(*bcn));
5007
5008         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5009                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5010                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5011                 if (!bcn->head_len)
5012                         return -EINVAL;
5013                 haveinfo = true;
5014         }
5015
5016         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5017                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5018                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5019                 haveinfo = true;
5020         }
5021
5022         if (!haveinfo)
5023                 return -EINVAL;
5024
5025         if (attrs[NL80211_ATTR_IE]) {
5026                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5027                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5028         }
5029
5030         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5031                 bcn->proberesp_ies =
5032                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5033                 bcn->proberesp_ies_len =
5034                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5035         }
5036
5037         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5038                 bcn->assocresp_ies =
5039                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5040                 bcn->assocresp_ies_len =
5041                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5042         }
5043
5044         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5045                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5046                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5047         }
5048
5049         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5050                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5051
5052                 err = nla_parse_nested_deprecated(tb,
5053                                                   NL80211_FTM_RESP_ATTR_MAX,
5054                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5055                                                   NULL, NULL);
5056                 if (err)
5057                         return err;
5058
5059                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5060                     wiphy_ext_feature_isset(&rdev->wiphy,
5061                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5062                         bcn->ftm_responder = 1;
5063                 else
5064                         return -EOPNOTSUPP;
5065
5066                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5067                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5068                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5069                 }
5070
5071                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5072                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5073                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5074                 }
5075         } else {
5076                 bcn->ftm_responder = -1;
5077         }
5078
5079         return 0;
5080 }
5081
5082 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5083                                     struct ieee80211_he_obss_pd *he_obss_pd)
5084 {
5085         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5086         int err;
5087
5088         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5089                                he_obss_pd_policy, NULL);
5090         if (err)
5091                 return err;
5092
5093         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5094                 return -EINVAL;
5095
5096         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5097
5098         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5099                 he_obss_pd->min_offset =
5100                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5101         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5102                 he_obss_pd->max_offset =
5103                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5104         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5105                 he_obss_pd->non_srg_max_offset =
5106                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5107
5108         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5109                 return -EINVAL;
5110
5111         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5112                 memcpy(he_obss_pd->bss_color_bitmap,
5113                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5114                        sizeof(he_obss_pd->bss_color_bitmap));
5115
5116         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5117                 memcpy(he_obss_pd->partial_bssid_bitmap,
5118                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5119                        sizeof(he_obss_pd->partial_bssid_bitmap));
5120
5121         he_obss_pd->enable = true;
5122
5123         return 0;
5124 }
5125
5126 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5127                                       struct cfg80211_he_bss_color *he_bss_color)
5128 {
5129         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5130         int err;
5131
5132         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5133                                he_bss_color_policy, NULL);
5134         if (err)
5135                 return err;
5136
5137         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5138                 return -EINVAL;
5139
5140         he_bss_color->color =
5141                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5142         he_bss_color->enabled =
5143                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5144         he_bss_color->partial =
5145                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5146
5147         return 0;
5148 }
5149
5150 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5151                                         struct nlattr *attrs,
5152                                         struct cfg80211_ap_settings *params)
5153 {
5154         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5155         int ret;
5156         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5157
5158         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5159                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5160                 return -EINVAL;
5161
5162         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5163                                NULL, NULL);
5164         if (ret)
5165                 return ret;
5166
5167         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5168             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5169             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5170                 return -EINVAL;
5171
5172         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5173         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5174         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5175         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5176
5177         return 0;
5178 }
5179
5180 static int
5181 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5182                                      struct nlattr *attrs,
5183                                      struct cfg80211_ap_settings *params)
5184 {
5185         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5186         int ret;
5187         struct cfg80211_unsol_bcast_probe_resp *presp =
5188                                         &params->unsol_bcast_probe_resp;
5189
5190         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5191                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5192                 return -EINVAL;
5193
5194         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5195                                attrs, NULL, NULL);
5196         if (ret)
5197                 return ret;
5198
5199         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5200             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5201                 return -EINVAL;
5202
5203         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5204         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5205         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5206         return 0;
5207 }
5208
5209 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5210                                             const u8 *rates)
5211 {
5212         int i;
5213
5214         if (!rates)
5215                 return;
5216
5217         for (i = 0; i < rates[1]; i++) {
5218                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5219                         params->ht_required = true;
5220                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5221                         params->vht_required = true;
5222                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5223                         params->he_required = true;
5224                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5225                         params->sae_h2e_required = true;
5226         }
5227 }
5228
5229 /*
5230  * Since the nl80211 API didn't include, from the beginning, attributes about
5231  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5232  * benefit of drivers that rebuild IEs in the firmware.
5233  */
5234 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5235 {
5236         const struct cfg80211_beacon_data *bcn = &params->beacon;
5237         size_t ies_len = bcn->tail_len;
5238         const u8 *ies = bcn->tail;
5239         const u8 *rates;
5240         const u8 *cap;
5241
5242         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5243         nl80211_check_ap_rate_selectors(params, rates);
5244
5245         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5246         nl80211_check_ap_rate_selectors(params, rates);
5247
5248         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5249         if (cap && cap[1] >= sizeof(*params->ht_cap))
5250                 params->ht_cap = (void *)(cap + 2);
5251         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5252         if (cap && cap[1] >= sizeof(*params->vht_cap))
5253                 params->vht_cap = (void *)(cap + 2);
5254         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5255         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5256                 params->he_cap = (void *)(cap + 3);
5257         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5258         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5259                 params->he_oper = (void *)(cap + 3);
5260 }
5261
5262 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5263                                    struct cfg80211_ap_settings *params)
5264 {
5265         struct wireless_dev *wdev;
5266         bool ret = false;
5267
5268         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5269                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5270                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5271                         continue;
5272
5273                 if (!wdev->preset_chandef.chan)
5274                         continue;
5275
5276                 params->chandef = wdev->preset_chandef;
5277                 ret = true;
5278                 break;
5279         }
5280
5281         return ret;
5282 }
5283
5284 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5285                                     enum nl80211_auth_type auth_type,
5286                                     enum nl80211_commands cmd)
5287 {
5288         if (auth_type > NL80211_AUTHTYPE_MAX)
5289                 return false;
5290
5291         switch (cmd) {
5292         case NL80211_CMD_AUTHENTICATE:
5293                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5294                     auth_type == NL80211_AUTHTYPE_SAE)
5295                         return false;
5296                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5297                                              NL80211_EXT_FEATURE_FILS_STA) &&
5298                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5299                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5300                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5301                         return false;
5302                 return true;
5303         case NL80211_CMD_CONNECT:
5304                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5305                     !wiphy_ext_feature_isset(&rdev->wiphy,
5306                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5307                     auth_type == NL80211_AUTHTYPE_SAE)
5308                         return false;
5309
5310                 /* FILS with SK PFS or PK not supported yet */
5311                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5312                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5313                         return false;
5314                 if (!wiphy_ext_feature_isset(
5315                             &rdev->wiphy,
5316                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5317                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5318                         return false;
5319                 return true;
5320         case NL80211_CMD_START_AP:
5321                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5322                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5323                     auth_type == NL80211_AUTHTYPE_SAE)
5324                         return false;
5325                 /* FILS not supported yet */
5326                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5327                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5328                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5329                         return false;
5330                 return true;
5331         default:
5332                 return false;
5333         }
5334 }
5335
5336 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5337 {
5338         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5339         struct net_device *dev = info->user_ptr[1];
5340         struct wireless_dev *wdev = dev->ieee80211_ptr;
5341         struct cfg80211_ap_settings params;
5342         int err;
5343
5344         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5345             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5346                 return -EOPNOTSUPP;
5347
5348         if (!rdev->ops->start_ap)
5349                 return -EOPNOTSUPP;
5350
5351         if (wdev->beacon_interval)
5352                 return -EALREADY;
5353
5354         memset(&params, 0, sizeof(params));
5355
5356         /* these are required for START_AP */
5357         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5358             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5359             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5360                 return -EINVAL;
5361
5362         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5363         if (err)
5364                 return err;
5365
5366         params.beacon_interval =
5367                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5368         params.dtim_period =
5369                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5370
5371         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5372                                            params.beacon_interval);
5373         if (err)
5374                 return err;
5375
5376         /*
5377          * In theory, some of these attributes should be required here
5378          * but since they were not used when the command was originally
5379          * added, keep them optional for old user space programs to let
5380          * them continue to work with drivers that do not need the
5381          * additional information -- drivers must check!
5382          */
5383         if (info->attrs[NL80211_ATTR_SSID]) {
5384                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5385                 params.ssid_len =
5386                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5387                 if (params.ssid_len == 0)
5388                         return -EINVAL;
5389         }
5390
5391         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5392                 params.hidden_ssid = nla_get_u32(
5393                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5394
5395         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5396
5397         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5398                 params.auth_type = nla_get_u32(
5399                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5400                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5401                                              NL80211_CMD_START_AP))
5402                         return -EINVAL;
5403         } else
5404                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5405
5406         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5407                                       NL80211_MAX_NR_CIPHER_SUITES);
5408         if (err)
5409                 return err;
5410
5411         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5412                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5413                         return -EOPNOTSUPP;
5414                 params.inactivity_timeout = nla_get_u16(
5415                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5416         }
5417
5418         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5419                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5420                         return -EINVAL;
5421                 params.p2p_ctwindow =
5422                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5423                 if (params.p2p_ctwindow != 0 &&
5424                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5425                         return -EINVAL;
5426         }
5427
5428         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5429                 u8 tmp;
5430
5431                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5432                         return -EINVAL;
5433                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5434                 params.p2p_opp_ps = tmp;
5435                 if (params.p2p_opp_ps != 0 &&
5436                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5437                         return -EINVAL;
5438         }
5439
5440         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5441                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5442                 if (err)
5443                         return err;
5444         } else if (wdev->preset_chandef.chan) {
5445                 params.chandef = wdev->preset_chandef;
5446         } else if (!nl80211_get_ap_channel(rdev, &params))
5447                 return -EINVAL;
5448
5449         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5450                                            wdev->iftype))
5451                 return -EINVAL;
5452
5453         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5454                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5455                                                     NL80211_ATTR_TX_RATES,
5456                                                     &params.beacon_rate,
5457                                                     dev, false);
5458                 if (err)
5459                         return err;
5460
5461                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5462                                               &params.beacon_rate);
5463                 if (err)
5464                         return err;
5465         }
5466
5467         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5468                 params.smps_mode =
5469                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5470                 switch (params.smps_mode) {
5471                 case NL80211_SMPS_OFF:
5472                         break;
5473                 case NL80211_SMPS_STATIC:
5474                         if (!(rdev->wiphy.features &
5475                               NL80211_FEATURE_STATIC_SMPS))
5476                                 return -EINVAL;
5477                         break;
5478                 case NL80211_SMPS_DYNAMIC:
5479                         if (!(rdev->wiphy.features &
5480                               NL80211_FEATURE_DYNAMIC_SMPS))
5481                                 return -EINVAL;
5482                         break;
5483                 default:
5484                         return -EINVAL;
5485                 }
5486         } else {
5487                 params.smps_mode = NL80211_SMPS_OFF;
5488         }
5489
5490         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5491         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5492                 return -EOPNOTSUPP;
5493
5494         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5495                 params.acl = parse_acl_data(&rdev->wiphy, info);
5496                 if (IS_ERR(params.acl))
5497                         return PTR_ERR(params.acl);
5498         }
5499
5500         params.twt_responder =
5501                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5502
5503         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5504                 err = nl80211_parse_he_obss_pd(
5505                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5506                                         &params.he_obss_pd);
5507                 if (err)
5508                         goto out;
5509         }
5510
5511         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5512                 err = nl80211_parse_he_bss_color(
5513                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5514                                         &params.he_bss_color);
5515                 if (err)
5516                         goto out;
5517         }
5518
5519         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5520                 err = nl80211_parse_fils_discovery(rdev,
5521                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5522                                                    &params);
5523                 if (err)
5524                         goto out;
5525         }
5526
5527         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5528                 err = nl80211_parse_unsol_bcast_probe_resp(
5529                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5530                         &params);
5531                 if (err)
5532                         goto out;
5533         }
5534
5535         nl80211_calculate_ap_params(&params);
5536
5537         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5538                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5539
5540         wdev_lock(wdev);
5541         err = rdev_start_ap(rdev, dev, &params);
5542         if (!err) {
5543                 wdev->preset_chandef = params.chandef;
5544                 wdev->beacon_interval = params.beacon_interval;
5545                 wdev->chandef = params.chandef;
5546                 wdev->ssid_len = params.ssid_len;
5547                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5548
5549                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5550                         wdev->conn_owner_nlportid = info->snd_portid;
5551         }
5552         wdev_unlock(wdev);
5553
5554 out:
5555         kfree(params.acl);
5556
5557         return err;
5558 }
5559
5560 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5561 {
5562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5563         struct net_device *dev = info->user_ptr[1];
5564         struct wireless_dev *wdev = dev->ieee80211_ptr;
5565         struct cfg80211_beacon_data params;
5566         int err;
5567
5568         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5569             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5570                 return -EOPNOTSUPP;
5571
5572         if (!rdev->ops->change_beacon)
5573                 return -EOPNOTSUPP;
5574
5575         if (!wdev->beacon_interval)
5576                 return -EINVAL;
5577
5578         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5579         if (err)
5580                 return err;
5581
5582         wdev_lock(wdev);
5583         err = rdev_change_beacon(rdev, dev, &params);
5584         wdev_unlock(wdev);
5585
5586         return err;
5587 }
5588
5589 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5590 {
5591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5592         struct net_device *dev = info->user_ptr[1];
5593
5594         return cfg80211_stop_ap(rdev, dev, false);
5595 }
5596
5597 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5598         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5599         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5600         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5601         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5602         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5603         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5604 };
5605
5606 static int parse_station_flags(struct genl_info *info,
5607                                enum nl80211_iftype iftype,
5608                                struct station_parameters *params)
5609 {
5610         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5611         struct nlattr *nla;
5612         int flag;
5613
5614         /*
5615          * Try parsing the new attribute first so userspace
5616          * can specify both for older kernels.
5617          */
5618         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5619         if (nla) {
5620                 struct nl80211_sta_flag_update *sta_flags;
5621
5622                 sta_flags = nla_data(nla);
5623                 params->sta_flags_mask = sta_flags->mask;
5624                 params->sta_flags_set = sta_flags->set;
5625                 params->sta_flags_set &= params->sta_flags_mask;
5626                 if ((params->sta_flags_mask |
5627                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5628                         return -EINVAL;
5629                 return 0;
5630         }
5631
5632         /* if present, parse the old attribute */
5633
5634         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5635         if (!nla)
5636                 return 0;
5637
5638         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5639                 return -EINVAL;
5640
5641         /*
5642          * Only allow certain flags for interface types so that
5643          * other attributes are silently ignored. Remember that
5644          * this is backward compatibility code with old userspace
5645          * and shouldn't be hit in other cases anyway.
5646          */
5647         switch (iftype) {
5648         case NL80211_IFTYPE_AP:
5649         case NL80211_IFTYPE_AP_VLAN:
5650         case NL80211_IFTYPE_P2P_GO:
5651                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5652                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5653                                          BIT(NL80211_STA_FLAG_WME) |
5654                                          BIT(NL80211_STA_FLAG_MFP);
5655                 break;
5656         case NL80211_IFTYPE_P2P_CLIENT:
5657         case NL80211_IFTYPE_STATION:
5658                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5659                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5660                 break;
5661         case NL80211_IFTYPE_MESH_POINT:
5662                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5663                                          BIT(NL80211_STA_FLAG_MFP) |
5664                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5665                 break;
5666         default:
5667                 return -EINVAL;
5668         }
5669
5670         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5671                 if (flags[flag]) {
5672                         params->sta_flags_set |= (1<<flag);
5673
5674                         /* no longer support new API additions in old API */
5675                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5676                                 return -EINVAL;
5677                 }
5678         }
5679
5680         return 0;
5681 }
5682
5683 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5684 {
5685         struct nlattr *rate;
5686         u32 bitrate;
5687         u16 bitrate_compat;
5688         enum nl80211_rate_info rate_flg;
5689
5690         rate = nla_nest_start_noflag(msg, attr);
5691         if (!rate)
5692                 return false;
5693
5694         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5695         bitrate = cfg80211_calculate_bitrate(info);
5696         /* report 16-bit bitrate only if we can */
5697         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5698         if (bitrate > 0 &&
5699             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5700                 return false;
5701         if (bitrate_compat > 0 &&
5702             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5703                 return false;
5704
5705         switch (info->bw) {
5706         case RATE_INFO_BW_5:
5707                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5708                 break;
5709         case RATE_INFO_BW_10:
5710                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5711                 break;
5712         default:
5713                 WARN_ON(1);
5714                 fallthrough;
5715         case RATE_INFO_BW_20:
5716                 rate_flg = 0;
5717                 break;
5718         case RATE_INFO_BW_40:
5719                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5720                 break;
5721         case RATE_INFO_BW_80:
5722                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5723                 break;
5724         case RATE_INFO_BW_160:
5725                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5726                 break;
5727         case RATE_INFO_BW_HE_RU:
5728                 rate_flg = 0;
5729                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5730         }
5731
5732         if (rate_flg && nla_put_flag(msg, rate_flg))
5733                 return false;
5734
5735         if (info->flags & RATE_INFO_FLAGS_MCS) {
5736                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5737                         return false;
5738                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5739                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5740                         return false;
5741         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5742                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5743                         return false;
5744                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5745                         return false;
5746                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5747                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5748                         return false;
5749         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5750                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5751                         return false;
5752                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5753                         return false;
5754                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5755                         return false;
5756                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5757                         return false;
5758                 if (info->bw == RATE_INFO_BW_HE_RU &&
5759                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5760                                info->he_ru_alloc))
5761                         return false;
5762         }
5763
5764         nla_nest_end(msg, rate);
5765         return true;
5766 }
5767
5768 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5769                                int id)
5770 {
5771         void *attr;
5772         int i = 0;
5773
5774         if (!mask)
5775                 return true;
5776
5777         attr = nla_nest_start_noflag(msg, id);
5778         if (!attr)
5779                 return false;
5780
5781         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5782                 if (!(mask & BIT(i)))
5783                         continue;
5784
5785                 if (nla_put_u8(msg, i, signal[i]))
5786                         return false;
5787         }
5788
5789         nla_nest_end(msg, attr);
5790
5791         return true;
5792 }
5793
5794 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5795                                 u32 seq, int flags,
5796                                 struct cfg80211_registered_device *rdev,
5797                                 struct net_device *dev,
5798                                 const u8 *mac_addr, struct station_info *sinfo)
5799 {
5800         void *hdr;
5801         struct nlattr *sinfoattr, *bss_param;
5802
5803         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5804         if (!hdr) {
5805                 cfg80211_sinfo_release_content(sinfo);
5806                 return -1;
5807         }
5808
5809         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5810             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5811             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5812                 goto nla_put_failure;
5813
5814         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5815         if (!sinfoattr)
5816                 goto nla_put_failure;
5817
5818 #define PUT_SINFO(attr, memb, type) do {                                \
5819         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5820         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5821             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5822                              sinfo->memb))                              \
5823                 goto nla_put_failure;                                   \
5824         } while (0)
5825 #define PUT_SINFO_U64(attr, memb) do {                                  \
5826         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5827             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5828                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5829                 goto nla_put_failure;                                   \
5830         } while (0)
5831
5832         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5833         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5834         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5835
5836         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5837                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5838             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5839                         (u32)sinfo->rx_bytes))
5840                 goto nla_put_failure;
5841
5842         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5843                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5844             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5845                         (u32)sinfo->tx_bytes))
5846                 goto nla_put_failure;
5847
5848         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5849         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5850         PUT_SINFO(LLID, llid, u16);
5851         PUT_SINFO(PLID, plid, u16);
5852         PUT_SINFO(PLINK_STATE, plink_state, u8);
5853         PUT_SINFO_U64(RX_DURATION, rx_duration);
5854         PUT_SINFO_U64(TX_DURATION, tx_duration);
5855
5856         if (wiphy_ext_feature_isset(&rdev->wiphy,
5857                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5858                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5859
5860         switch (rdev->wiphy.signal_type) {
5861         case CFG80211_SIGNAL_TYPE_MBM:
5862                 PUT_SINFO(SIGNAL, signal, u8);
5863                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5864                 break;
5865         default:
5866                 break;
5867         }
5868         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5869                 if (!nl80211_put_signal(msg, sinfo->chains,
5870                                         sinfo->chain_signal,
5871                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5872                         goto nla_put_failure;
5873         }
5874         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5875                 if (!nl80211_put_signal(msg, sinfo->chains,
5876                                         sinfo->chain_signal_avg,
5877                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5878                         goto nla_put_failure;
5879         }
5880         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5881                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5882                                           NL80211_STA_INFO_TX_BITRATE))
5883                         goto nla_put_failure;
5884         }
5885         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5886                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5887                                           NL80211_STA_INFO_RX_BITRATE))
5888                         goto nla_put_failure;
5889         }
5890
5891         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5892         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5893         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5894         PUT_SINFO(TX_FAILED, tx_failed, u32);
5895         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5896         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5897         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5898         PUT_SINFO(LOCAL_PM, local_pm, u32);
5899         PUT_SINFO(PEER_PM, peer_pm, u32);
5900         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5901         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5902         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5903
5904         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5905                 bss_param = nla_nest_start_noflag(msg,
5906                                                   NL80211_STA_INFO_BSS_PARAM);
5907                 if (!bss_param)
5908                         goto nla_put_failure;
5909
5910                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5911                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5912                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5913                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5914                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5915                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5916                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5917                                sinfo->bss_param.dtim_period) ||
5918                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5919                                 sinfo->bss_param.beacon_interval))
5920                         goto nla_put_failure;
5921
5922                 nla_nest_end(msg, bss_param);
5923         }
5924         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5925             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5926                     sizeof(struct nl80211_sta_flag_update),
5927                     &sinfo->sta_flags))
5928                 goto nla_put_failure;
5929
5930         PUT_SINFO_U64(T_OFFSET, t_offset);
5931         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5932         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5933         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5934         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5935         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5936         if (wiphy_ext_feature_isset(&rdev->wiphy,
5937                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5938                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5939                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5940         }
5941
5942 #undef PUT_SINFO
5943 #undef PUT_SINFO_U64
5944
5945         if (sinfo->pertid) {
5946                 struct nlattr *tidsattr;
5947                 int tid;
5948
5949                 tidsattr = nla_nest_start_noflag(msg,
5950                                                  NL80211_STA_INFO_TID_STATS);
5951                 if (!tidsattr)
5952                         goto nla_put_failure;
5953
5954                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5955                         struct cfg80211_tid_stats *tidstats;
5956                         struct nlattr *tidattr;
5957
5958                         tidstats = &sinfo->pertid[tid];
5959
5960                         if (!tidstats->filled)
5961                                 continue;
5962
5963                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5964                         if (!tidattr)
5965                                 goto nla_put_failure;
5966
5967 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5968         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5969             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5970                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5971                 goto nla_put_failure;                                   \
5972         } while (0)
5973
5974                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5975                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5976                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5977                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5978
5979 #undef PUT_TIDVAL_U64
5980                         if ((tidstats->filled &
5981                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5982                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5983                                                    NL80211_TID_STATS_TXQ_STATS))
5984                                 goto nla_put_failure;
5985
5986                         nla_nest_end(msg, tidattr);
5987                 }
5988
5989                 nla_nest_end(msg, tidsattr);
5990         }
5991
5992         nla_nest_end(msg, sinfoattr);
5993
5994         if (sinfo->assoc_req_ies_len &&
5995             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5996                     sinfo->assoc_req_ies))
5997                 goto nla_put_failure;
5998
5999         cfg80211_sinfo_release_content(sinfo);
6000         genlmsg_end(msg, hdr);
6001         return 0;
6002
6003  nla_put_failure:
6004         cfg80211_sinfo_release_content(sinfo);
6005         genlmsg_cancel(msg, hdr);
6006         return -EMSGSIZE;
6007 }
6008
6009 static int nl80211_dump_station(struct sk_buff *skb,
6010                                 struct netlink_callback *cb)
6011 {
6012         struct station_info sinfo;
6013         struct cfg80211_registered_device *rdev;
6014         struct wireless_dev *wdev;
6015         u8 mac_addr[ETH_ALEN];
6016         int sta_idx = cb->args[2];
6017         int err;
6018
6019         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6020         if (err)
6021                 return err;
6022         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6023         __acquire(&rdev->wiphy.mtx);
6024
6025         if (!wdev->netdev) {
6026                 err = -EINVAL;
6027                 goto out_err;
6028         }
6029
6030         if (!rdev->ops->dump_station) {
6031                 err = -EOPNOTSUPP;
6032                 goto out_err;
6033         }
6034
6035         while (1) {
6036                 memset(&sinfo, 0, sizeof(sinfo));
6037                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6038                                         mac_addr, &sinfo);
6039                 if (err == -ENOENT)
6040                         break;
6041                 if (err)
6042                         goto out_err;
6043
6044                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6045                                 NETLINK_CB(cb->skb).portid,
6046                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6047                                 rdev, wdev->netdev, mac_addr,
6048                                 &sinfo) < 0)
6049                         goto out;
6050
6051                 sta_idx++;
6052         }
6053
6054  out:
6055         cb->args[2] = sta_idx;
6056         err = skb->len;
6057  out_err:
6058         wiphy_unlock(&rdev->wiphy);
6059
6060         return err;
6061 }
6062
6063 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6064 {
6065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6066         struct net_device *dev = info->user_ptr[1];
6067         struct station_info sinfo;
6068         struct sk_buff *msg;
6069         u8 *mac_addr = NULL;
6070         int err;
6071
6072         memset(&sinfo, 0, sizeof(sinfo));
6073
6074         if (!info->attrs[NL80211_ATTR_MAC])
6075                 return -EINVAL;
6076
6077         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6078
6079         if (!rdev->ops->get_station)
6080                 return -EOPNOTSUPP;
6081
6082         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6083         if (err)
6084                 return err;
6085
6086         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6087         if (!msg) {
6088                 cfg80211_sinfo_release_content(&sinfo);
6089                 return -ENOMEM;
6090         }
6091
6092         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6093                                  info->snd_portid, info->snd_seq, 0,
6094                                  rdev, dev, mac_addr, &sinfo) < 0) {
6095                 nlmsg_free(msg);
6096                 return -ENOBUFS;
6097         }
6098
6099         return genlmsg_reply(msg, info);
6100 }
6101
6102 int cfg80211_check_station_change(struct wiphy *wiphy,
6103                                   struct station_parameters *params,
6104                                   enum cfg80211_station_type statype)
6105 {
6106         if (params->listen_interval != -1 &&
6107             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6108                 return -EINVAL;
6109
6110         if (params->support_p2p_ps != -1 &&
6111             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6112                 return -EINVAL;
6113
6114         if (params->aid &&
6115             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6116             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6117                 return -EINVAL;
6118
6119         /* When you run into this, adjust the code below for the new flag */
6120         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6121
6122         switch (statype) {
6123         case CFG80211_STA_MESH_PEER_KERNEL:
6124         case CFG80211_STA_MESH_PEER_USER:
6125                 /*
6126                  * No ignoring the TDLS flag here -- the userspace mesh
6127                  * code doesn't have the bug of including TDLS in the
6128                  * mask everywhere.
6129                  */
6130                 if (params->sta_flags_mask &
6131                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6132                                   BIT(NL80211_STA_FLAG_MFP) |
6133                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6134                         return -EINVAL;
6135                 break;
6136         case CFG80211_STA_TDLS_PEER_SETUP:
6137         case CFG80211_STA_TDLS_PEER_ACTIVE:
6138                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6139                         return -EINVAL;
6140                 /* ignore since it can't change */
6141                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6142                 break;
6143         default:
6144                 /* disallow mesh-specific things */
6145                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6146                         return -EINVAL;
6147                 if (params->local_pm)
6148                         return -EINVAL;
6149                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6150                         return -EINVAL;
6151         }
6152
6153         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6154             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6155                 /* TDLS can't be set, ... */
6156                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6157                         return -EINVAL;
6158                 /*
6159                  * ... but don't bother the driver with it. This works around
6160                  * a hostapd/wpa_supplicant issue -- it always includes the
6161                  * TLDS_PEER flag in the mask even for AP mode.
6162                  */
6163                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6164         }
6165
6166         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6167             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6168                 /* reject other things that can't change */
6169                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6170                         return -EINVAL;
6171                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6172                         return -EINVAL;
6173                 if (params->supported_rates)
6174                         return -EINVAL;
6175                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6176                     params->he_capa)
6177                         return -EINVAL;
6178         }
6179
6180         if (statype != CFG80211_STA_AP_CLIENT &&
6181             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6182                 if (params->vlan)
6183                         return -EINVAL;
6184         }
6185
6186         switch (statype) {
6187         case CFG80211_STA_AP_MLME_CLIENT:
6188                 /* Use this only for authorizing/unauthorizing a station */
6189                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6190                         return -EOPNOTSUPP;
6191                 break;
6192         case CFG80211_STA_AP_CLIENT:
6193         case CFG80211_STA_AP_CLIENT_UNASSOC:
6194                 /* accept only the listed bits */
6195                 if (params->sta_flags_mask &
6196                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6197                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6198                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6199                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6200                                   BIT(NL80211_STA_FLAG_WME) |
6201                                   BIT(NL80211_STA_FLAG_MFP)))
6202                         return -EINVAL;
6203
6204                 /* but authenticated/associated only if driver handles it */
6205                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6206                     params->sta_flags_mask &
6207                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6208                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6209                         return -EINVAL;
6210                 break;
6211         case CFG80211_STA_IBSS:
6212         case CFG80211_STA_AP_STA:
6213                 /* reject any changes other than AUTHORIZED */
6214                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6215                         return -EINVAL;
6216                 break;
6217         case CFG80211_STA_TDLS_PEER_SETUP:
6218                 /* reject any changes other than AUTHORIZED or WME */
6219                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6220                                                BIT(NL80211_STA_FLAG_WME)))
6221                         return -EINVAL;
6222                 /* force (at least) rates when authorizing */
6223                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6224                     !params->supported_rates)
6225                         return -EINVAL;
6226                 break;
6227         case CFG80211_STA_TDLS_PEER_ACTIVE:
6228                 /* reject any changes */
6229                 return -EINVAL;
6230         case CFG80211_STA_MESH_PEER_KERNEL:
6231                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6232                         return -EINVAL;
6233                 break;
6234         case CFG80211_STA_MESH_PEER_USER:
6235                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6236                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6237                         return -EINVAL;
6238                 break;
6239         }
6240
6241         /*
6242          * Older kernel versions ignored this attribute entirely, so don't
6243          * reject attempts to update it but mark it as unused instead so the
6244          * driver won't look at the data.
6245          */
6246         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6247             statype != CFG80211_STA_TDLS_PEER_SETUP)
6248                 params->opmode_notif_used = false;
6249
6250         return 0;
6251 }
6252 EXPORT_SYMBOL(cfg80211_check_station_change);
6253
6254 /*
6255  * Get vlan interface making sure it is running and on the right wiphy.
6256  */
6257 static struct net_device *get_vlan(struct genl_info *info,
6258                                    struct cfg80211_registered_device *rdev)
6259 {
6260         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6261         struct net_device *v;
6262         int ret;
6263
6264         if (!vlanattr)
6265                 return NULL;
6266
6267         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6268         if (!v)
6269                 return ERR_PTR(-ENODEV);
6270
6271         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6272                 ret = -EINVAL;
6273                 goto error;
6274         }
6275
6276         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6277             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6278             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6279                 ret = -EINVAL;
6280                 goto error;
6281         }
6282
6283         if (!netif_running(v)) {
6284                 ret = -ENETDOWN;
6285                 goto error;
6286         }
6287
6288         return v;
6289  error:
6290         dev_put(v);
6291         return ERR_PTR(ret);
6292 }
6293
6294 static const struct nla_policy
6295 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6296         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6297         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6298 };
6299
6300 static int nl80211_parse_sta_wme(struct genl_info *info,
6301                                  struct station_parameters *params)
6302 {
6303         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6304         struct nlattr *nla;
6305         int err;
6306
6307         /* parse WME attributes if present */
6308         if (!info->attrs[NL80211_ATTR_STA_WME])
6309                 return 0;
6310
6311         nla = info->attrs[NL80211_ATTR_STA_WME];
6312         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6313                                           nl80211_sta_wme_policy,
6314                                           info->extack);
6315         if (err)
6316                 return err;
6317
6318         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6319                 params->uapsd_queues = nla_get_u8(
6320                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6321         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6322                 return -EINVAL;
6323
6324         if (tb[NL80211_STA_WME_MAX_SP])
6325                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6326
6327         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6328                 return -EINVAL;
6329
6330         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6331
6332         return 0;
6333 }
6334
6335 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6336                                       struct station_parameters *params)
6337 {
6338         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6339                 params->supported_channels =
6340                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6341                 params->supported_channels_len =
6342                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6343                 /*
6344                  * Need to include at least one (first channel, number of
6345                  * channels) tuple for each subband (checked in policy),
6346                  * and must have proper tuples for the rest of the data as well.
6347                  */
6348                 if (params->supported_channels_len % 2)
6349                         return -EINVAL;
6350         }
6351
6352         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6353                 params->supported_oper_classes =
6354                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6355                 params->supported_oper_classes_len =
6356                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6357         }
6358         return 0;
6359 }
6360
6361 static int nl80211_set_station_tdls(struct genl_info *info,
6362                                     struct station_parameters *params)
6363 {
6364         int err;
6365         /* Dummy STA entry gets updated once the peer capabilities are known */
6366         if (info->attrs[NL80211_ATTR_PEER_AID])
6367                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6368         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6369                 params->ht_capa =
6370                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6371         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6372                 params->vht_capa =
6373                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6374         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6375                 params->he_capa =
6376                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6377                 params->he_capa_len =
6378                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6379         }
6380
6381         err = nl80211_parse_sta_channel_info(info, params);
6382         if (err)
6383                 return err;
6384
6385         return nl80211_parse_sta_wme(info, params);
6386 }
6387
6388 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6389                                              struct station_parameters *params)
6390 {
6391         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6392         int idx;
6393
6394         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6395                 if (!rdev->ops->set_tx_power ||
6396                     !wiphy_ext_feature_isset(&rdev->wiphy,
6397                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6398                         return -EOPNOTSUPP;
6399
6400                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6401                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6402
6403                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6404                         idx = NL80211_ATTR_STA_TX_POWER;
6405
6406                         if (info->attrs[idx])
6407                                 params->txpwr.power =
6408                                         nla_get_s16(info->attrs[idx]);
6409                         else
6410                                 return -EINVAL;
6411                 }
6412                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6413         }
6414
6415         return 0;
6416 }
6417
6418 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6419 {
6420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6421         struct net_device *dev = info->user_ptr[1];
6422         struct station_parameters params;
6423         u8 *mac_addr;
6424         int err;
6425
6426         memset(&params, 0, sizeof(params));
6427
6428         if (!rdev->ops->change_station)
6429                 return -EOPNOTSUPP;
6430
6431         /*
6432          * AID and listen_interval properties can be set only for unassociated
6433          * station. Include these parameters here and will check them in
6434          * cfg80211_check_station_change().
6435          */
6436         if (info->attrs[NL80211_ATTR_STA_AID])
6437                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6438
6439         if (info->attrs[NL80211_ATTR_VLAN_ID])
6440                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6441
6442         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6443                 params.listen_interval =
6444                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6445         else
6446                 params.listen_interval = -1;
6447
6448         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6449                 params.support_p2p_ps =
6450                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6451         else
6452                 params.support_p2p_ps = -1;
6453
6454         if (!info->attrs[NL80211_ATTR_MAC])
6455                 return -EINVAL;
6456
6457         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6458
6459         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6460                 params.supported_rates =
6461                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6462                 params.supported_rates_len =
6463                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6464         }
6465
6466         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6467                 params.capability =
6468                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6469                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6470         }
6471
6472         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6473                 params.ext_capab =
6474                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6475                 params.ext_capab_len =
6476                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6477         }
6478
6479         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6480                 return -EINVAL;
6481
6482         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6483                 params.plink_action =
6484                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6485
6486         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6487                 params.plink_state =
6488                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6489                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6490                         params.peer_aid = nla_get_u16(
6491                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6492                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6493         }
6494
6495         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6496                 params.local_pm = nla_get_u32(
6497                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6498
6499         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6500                 params.opmode_notif_used = true;
6501                 params.opmode_notif =
6502                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6503         }
6504
6505         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6506                 params.he_6ghz_capa =
6507                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6508
6509         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6510                 params.airtime_weight =
6511                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6512
6513         if (params.airtime_weight &&
6514             !wiphy_ext_feature_isset(&rdev->wiphy,
6515                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6516                 return -EOPNOTSUPP;
6517
6518         err = nl80211_parse_sta_txpower_setting(info, &params);
6519         if (err)
6520                 return err;
6521
6522         /* Include parameters for TDLS peer (will check later) */
6523         err = nl80211_set_station_tdls(info, &params);
6524         if (err)
6525                 return err;
6526
6527         params.vlan = get_vlan(info, rdev);
6528         if (IS_ERR(params.vlan))
6529                 return PTR_ERR(params.vlan);
6530
6531         switch (dev->ieee80211_ptr->iftype) {
6532         case NL80211_IFTYPE_AP:
6533         case NL80211_IFTYPE_AP_VLAN:
6534         case NL80211_IFTYPE_P2P_GO:
6535         case NL80211_IFTYPE_P2P_CLIENT:
6536         case NL80211_IFTYPE_STATION:
6537         case NL80211_IFTYPE_ADHOC:
6538         case NL80211_IFTYPE_MESH_POINT:
6539                 break;
6540         default:
6541                 err = -EOPNOTSUPP;
6542                 goto out_put_vlan;
6543         }
6544
6545         /* driver will call cfg80211_check_station_change() */
6546         err = rdev_change_station(rdev, dev, mac_addr, &params);
6547
6548  out_put_vlan:
6549         dev_put(params.vlan);
6550
6551         return err;
6552 }
6553
6554 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6555 {
6556         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6557         int err;
6558         struct net_device *dev = info->user_ptr[1];
6559         struct station_parameters params;
6560         u8 *mac_addr = NULL;
6561         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6562                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6563
6564         memset(&params, 0, sizeof(params));
6565
6566         if (!rdev->ops->add_station)
6567                 return -EOPNOTSUPP;
6568
6569         if (!info->attrs[NL80211_ATTR_MAC])
6570                 return -EINVAL;
6571
6572         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6573                 return -EINVAL;
6574
6575         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6576                 return -EINVAL;
6577
6578         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6579             !info->attrs[NL80211_ATTR_PEER_AID])
6580                 return -EINVAL;
6581
6582         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6583         params.supported_rates =
6584                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6585         params.supported_rates_len =
6586                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6587         params.listen_interval =
6588                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6589
6590         if (info->attrs[NL80211_ATTR_VLAN_ID])
6591                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6592
6593         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6594                 params.support_p2p_ps =
6595                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6596         } else {
6597                 /*
6598                  * if not specified, assume it's supported for P2P GO interface,
6599                  * and is NOT supported for AP interface
6600                  */
6601                 params.support_p2p_ps =
6602                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6603         }
6604
6605         if (info->attrs[NL80211_ATTR_PEER_AID])
6606                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6607         else
6608                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6609
6610         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6611                 params.capability =
6612                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6613                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6614         }
6615
6616         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6617                 params.ext_capab =
6618                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6619                 params.ext_capab_len =
6620                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6621         }
6622
6623         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6624                 params.ht_capa =
6625                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6626
6627         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6628                 params.vht_capa =
6629                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6630
6631         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6632                 params.he_capa =
6633                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6634                 params.he_capa_len =
6635                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6636         }
6637
6638         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6639                 params.he_6ghz_capa =
6640                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6641
6642         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6643                 params.opmode_notif_used = true;
6644                 params.opmode_notif =
6645                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6646         }
6647
6648         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6649                 params.plink_action =
6650                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6651
6652         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6653                 params.airtime_weight =
6654                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6655
6656         if (params.airtime_weight &&
6657             !wiphy_ext_feature_isset(&rdev->wiphy,
6658                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6659                 return -EOPNOTSUPP;
6660
6661         err = nl80211_parse_sta_txpower_setting(info, &params);
6662         if (err)
6663                 return err;
6664
6665         err = nl80211_parse_sta_channel_info(info, &params);
6666         if (err)
6667                 return err;
6668
6669         err = nl80211_parse_sta_wme(info, &params);
6670         if (err)
6671                 return err;
6672
6673         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6674                 return -EINVAL;
6675
6676         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6677          * as userspace might just pass through the capabilities from the IEs
6678          * directly, rather than enforcing this restriction and returning an
6679          * error in this case.
6680          */
6681         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6682                 params.ht_capa = NULL;
6683                 params.vht_capa = NULL;
6684
6685                 /* HE requires WME */
6686                 if (params.he_capa_len || params.he_6ghz_capa)
6687                         return -EINVAL;
6688         }
6689
6690         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6691         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6692                 return -EINVAL;
6693
6694         /* When you run into this, adjust the code below for the new flag */
6695         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6696
6697         switch (dev->ieee80211_ptr->iftype) {
6698         case NL80211_IFTYPE_AP:
6699         case NL80211_IFTYPE_AP_VLAN:
6700         case NL80211_IFTYPE_P2P_GO:
6701                 /* ignore WME attributes if iface/sta is not capable */
6702                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6703                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6704                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6705
6706                 /* TDLS peers cannot be added */
6707                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6708                     info->attrs[NL80211_ATTR_PEER_AID])
6709                         return -EINVAL;
6710                 /* but don't bother the driver with it */
6711                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6712
6713                 /* allow authenticated/associated only if driver handles it */
6714                 if (!(rdev->wiphy.features &
6715                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6716                     params.sta_flags_mask & auth_assoc)
6717                         return -EINVAL;
6718
6719                 /* Older userspace, or userspace wanting to be compatible with
6720                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6721                  * and assoc flags in the mask, but assumes the station will be
6722                  * added as associated anyway since this was the required driver
6723                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6724                  * introduced.
6725                  * In order to not bother drivers with this quirk in the API
6726                  * set the flags in both the mask and set for new stations in
6727                  * this case.
6728                  */
6729                 if (!(params.sta_flags_mask & auth_assoc)) {
6730                         params.sta_flags_mask |= auth_assoc;
6731                         params.sta_flags_set |= auth_assoc;
6732                 }
6733
6734                 /* must be last in here for error handling */
6735                 params.vlan = get_vlan(info, rdev);
6736                 if (IS_ERR(params.vlan))
6737                         return PTR_ERR(params.vlan);
6738                 break;
6739         case NL80211_IFTYPE_MESH_POINT:
6740                 /* ignore uAPSD data */
6741                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6742
6743                 /* associated is disallowed */
6744                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6745                         return -EINVAL;
6746                 /* TDLS peers cannot be added */
6747                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6748                     info->attrs[NL80211_ATTR_PEER_AID])
6749                         return -EINVAL;
6750                 break;
6751         case NL80211_IFTYPE_STATION:
6752         case NL80211_IFTYPE_P2P_CLIENT:
6753                 /* ignore uAPSD data */
6754                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6755
6756                 /* these are disallowed */
6757                 if (params.sta_flags_mask &
6758                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6759                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6760                         return -EINVAL;
6761                 /* Only TDLS peers can be added */
6762                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6763                         return -EINVAL;
6764                 /* Can only add if TDLS ... */
6765                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6766                         return -EOPNOTSUPP;
6767                 /* ... with external setup is supported */
6768                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6769                         return -EOPNOTSUPP;
6770                 /*
6771                  * Older wpa_supplicant versions always mark the TDLS peer
6772                  * as authorized, but it shouldn't yet be.
6773                  */
6774                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6775                 break;
6776         default:
6777                 return -EOPNOTSUPP;
6778         }
6779
6780         /* be aware of params.vlan when changing code here */
6781
6782         err = rdev_add_station(rdev, dev, mac_addr, &params);
6783
6784         dev_put(params.vlan);
6785         return err;
6786 }
6787
6788 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6789 {
6790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6791         struct net_device *dev = info->user_ptr[1];
6792         struct station_del_parameters params;
6793
6794         memset(&params, 0, sizeof(params));
6795
6796         if (info->attrs[NL80211_ATTR_MAC])
6797                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6798
6799         switch (dev->ieee80211_ptr->iftype) {
6800         case NL80211_IFTYPE_AP:
6801         case NL80211_IFTYPE_AP_VLAN:
6802         case NL80211_IFTYPE_MESH_POINT:
6803         case NL80211_IFTYPE_P2P_GO:
6804                 /* always accept these */
6805                 break;
6806         case NL80211_IFTYPE_ADHOC:
6807                 /* conditionally accept */
6808                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6809                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6810                         break;
6811                 return -EINVAL;
6812         default:
6813                 return -EINVAL;
6814         }
6815
6816         if (!rdev->ops->del_station)
6817                 return -EOPNOTSUPP;
6818
6819         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6820                 params.subtype =
6821                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6822                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6823                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6824                         return -EINVAL;
6825         } else {
6826                 /* Default to Deauthentication frame */
6827                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6828         }
6829
6830         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6831                 params.reason_code =
6832                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6833                 if (params.reason_code == 0)
6834                         return -EINVAL; /* 0 is reserved */
6835         } else {
6836                 /* Default to reason code 2 */
6837                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6838         }
6839
6840         return rdev_del_station(rdev, dev, &params);
6841 }
6842
6843 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6844                                 int flags, struct net_device *dev,
6845                                 u8 *dst, u8 *next_hop,
6846                                 struct mpath_info *pinfo)
6847 {
6848         void *hdr;
6849         struct nlattr *pinfoattr;
6850
6851         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6852         if (!hdr)
6853                 return -1;
6854
6855         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6856             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6857             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6858             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6859                 goto nla_put_failure;
6860
6861         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6862         if (!pinfoattr)
6863                 goto nla_put_failure;
6864         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6865             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6866                         pinfo->frame_qlen))
6867                 goto nla_put_failure;
6868         if (((pinfo->filled & MPATH_INFO_SN) &&
6869              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6870             ((pinfo->filled & MPATH_INFO_METRIC) &&
6871              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6872                          pinfo->metric)) ||
6873             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6874              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6875                          pinfo->exptime)) ||
6876             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6877              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6878                         pinfo->flags)) ||
6879             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6880              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6881                          pinfo->discovery_timeout)) ||
6882             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6883              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6884                         pinfo->discovery_retries)) ||
6885             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6886              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6887                         pinfo->hop_count)) ||
6888             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6889              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6890                          pinfo->path_change_count)))
6891                 goto nla_put_failure;
6892
6893         nla_nest_end(msg, pinfoattr);
6894
6895         genlmsg_end(msg, hdr);
6896         return 0;
6897
6898  nla_put_failure:
6899         genlmsg_cancel(msg, hdr);
6900         return -EMSGSIZE;
6901 }
6902
6903 static int nl80211_dump_mpath(struct sk_buff *skb,
6904                               struct netlink_callback *cb)
6905 {
6906         struct mpath_info pinfo;
6907         struct cfg80211_registered_device *rdev;
6908         struct wireless_dev *wdev;
6909         u8 dst[ETH_ALEN];
6910         u8 next_hop[ETH_ALEN];
6911         int path_idx = cb->args[2];
6912         int err;
6913
6914         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6915         if (err)
6916                 return err;
6917         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6918         __acquire(&rdev->wiphy.mtx);
6919
6920         if (!rdev->ops->dump_mpath) {
6921                 err = -EOPNOTSUPP;
6922                 goto out_err;
6923         }
6924
6925         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6926                 err = -EOPNOTSUPP;
6927                 goto out_err;
6928         }
6929
6930         while (1) {
6931                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6932                                       next_hop, &pinfo);
6933                 if (err == -ENOENT)
6934                         break;
6935                 if (err)
6936                         goto out_err;
6937
6938                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6939                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6940                                        wdev->netdev, dst, next_hop,
6941                                        &pinfo) < 0)
6942                         goto out;
6943
6944                 path_idx++;
6945         }
6946
6947  out:
6948         cb->args[2] = path_idx;
6949         err = skb->len;
6950  out_err:
6951         wiphy_unlock(&rdev->wiphy);
6952         return err;
6953 }
6954
6955 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6956 {
6957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6958         int err;
6959         struct net_device *dev = info->user_ptr[1];
6960         struct mpath_info pinfo;
6961         struct sk_buff *msg;
6962         u8 *dst = NULL;
6963         u8 next_hop[ETH_ALEN];
6964
6965         memset(&pinfo, 0, sizeof(pinfo));
6966
6967         if (!info->attrs[NL80211_ATTR_MAC])
6968                 return -EINVAL;
6969
6970         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6971
6972         if (!rdev->ops->get_mpath)
6973                 return -EOPNOTSUPP;
6974
6975         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6976                 return -EOPNOTSUPP;
6977
6978         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6979         if (err)
6980                 return err;
6981
6982         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6983         if (!msg)
6984                 return -ENOMEM;
6985
6986         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6987                                  dev, dst, next_hop, &pinfo) < 0) {
6988                 nlmsg_free(msg);
6989                 return -ENOBUFS;
6990         }
6991
6992         return genlmsg_reply(msg, info);
6993 }
6994
6995 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6996 {
6997         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6998         struct net_device *dev = info->user_ptr[1];
6999         u8 *dst = NULL;
7000         u8 *next_hop = NULL;
7001
7002         if (!info->attrs[NL80211_ATTR_MAC])
7003                 return -EINVAL;
7004
7005         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7006                 return -EINVAL;
7007
7008         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7009         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7010
7011         if (!rdev->ops->change_mpath)
7012                 return -EOPNOTSUPP;
7013
7014         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7015                 return -EOPNOTSUPP;
7016
7017         return rdev_change_mpath(rdev, dev, dst, next_hop);
7018 }
7019
7020 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7021 {
7022         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7023         struct net_device *dev = info->user_ptr[1];
7024         u8 *dst = NULL;
7025         u8 *next_hop = NULL;
7026
7027         if (!info->attrs[NL80211_ATTR_MAC])
7028                 return -EINVAL;
7029
7030         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7031                 return -EINVAL;
7032
7033         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7034         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7035
7036         if (!rdev->ops->add_mpath)
7037                 return -EOPNOTSUPP;
7038
7039         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7040                 return -EOPNOTSUPP;
7041
7042         return rdev_add_mpath(rdev, dev, dst, next_hop);
7043 }
7044
7045 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7046 {
7047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7048         struct net_device *dev = info->user_ptr[1];
7049         u8 *dst = NULL;
7050
7051         if (info->attrs[NL80211_ATTR_MAC])
7052                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7053
7054         if (!rdev->ops->del_mpath)
7055                 return -EOPNOTSUPP;
7056
7057         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7058                 return -EOPNOTSUPP;
7059
7060         return rdev_del_mpath(rdev, dev, dst);
7061 }
7062
7063 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7064 {
7065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7066         int err;
7067         struct net_device *dev = info->user_ptr[1];
7068         struct mpath_info pinfo;
7069         struct sk_buff *msg;
7070         u8 *dst = NULL;
7071         u8 mpp[ETH_ALEN];
7072
7073         memset(&pinfo, 0, sizeof(pinfo));
7074
7075         if (!info->attrs[NL80211_ATTR_MAC])
7076                 return -EINVAL;
7077
7078         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7079
7080         if (!rdev->ops->get_mpp)
7081                 return -EOPNOTSUPP;
7082
7083         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7084                 return -EOPNOTSUPP;
7085
7086         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7087         if (err)
7088                 return err;
7089
7090         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7091         if (!msg)
7092                 return -ENOMEM;
7093
7094         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7095                                dev, dst, mpp, &pinfo) < 0) {
7096                 nlmsg_free(msg);
7097                 return -ENOBUFS;
7098         }
7099
7100         return genlmsg_reply(msg, info);
7101 }
7102
7103 static int nl80211_dump_mpp(struct sk_buff *skb,
7104                             struct netlink_callback *cb)
7105 {
7106         struct mpath_info pinfo;
7107         struct cfg80211_registered_device *rdev;
7108         struct wireless_dev *wdev;
7109         u8 dst[ETH_ALEN];
7110         u8 mpp[ETH_ALEN];
7111         int path_idx = cb->args[2];
7112         int err;
7113
7114         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7115         if (err)
7116                 return err;
7117         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7118         __acquire(&rdev->wiphy.mtx);
7119
7120         if (!rdev->ops->dump_mpp) {
7121                 err = -EOPNOTSUPP;
7122                 goto out_err;
7123         }
7124
7125         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7126                 err = -EOPNOTSUPP;
7127                 goto out_err;
7128         }
7129
7130         while (1) {
7131                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7132                                     mpp, &pinfo);
7133                 if (err == -ENOENT)
7134                         break;
7135                 if (err)
7136                         goto out_err;
7137
7138                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7139                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7140                                        wdev->netdev, dst, mpp,
7141                                        &pinfo) < 0)
7142                         goto out;
7143
7144                 path_idx++;
7145         }
7146
7147  out:
7148         cb->args[2] = path_idx;
7149         err = skb->len;
7150  out_err:
7151         wiphy_unlock(&rdev->wiphy);
7152         return err;
7153 }
7154
7155 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7156 {
7157         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7158         struct net_device *dev = info->user_ptr[1];
7159         struct wireless_dev *wdev = dev->ieee80211_ptr;
7160         struct bss_parameters params;
7161         int err;
7162
7163         memset(&params, 0, sizeof(params));
7164         /* default to not changing parameters */
7165         params.use_cts_prot = -1;
7166         params.use_short_preamble = -1;
7167         params.use_short_slot_time = -1;
7168         params.ap_isolate = -1;
7169         params.ht_opmode = -1;
7170         params.p2p_ctwindow = -1;
7171         params.p2p_opp_ps = -1;
7172
7173         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7174                 params.use_cts_prot =
7175                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7176         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7177                 params.use_short_preamble =
7178                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7179         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7180                 params.use_short_slot_time =
7181                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7182         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7183                 params.basic_rates =
7184                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7185                 params.basic_rates_len =
7186                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7187         }
7188         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7189                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7190         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7191                 params.ht_opmode =
7192                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7193
7194         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7195                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7196                         return -EINVAL;
7197                 params.p2p_ctwindow =
7198                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7199                 if (params.p2p_ctwindow != 0 &&
7200                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7201                         return -EINVAL;
7202         }
7203
7204         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7205                 u8 tmp;
7206
7207                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7208                         return -EINVAL;
7209                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7210                 params.p2p_opp_ps = tmp;
7211                 if (params.p2p_opp_ps &&
7212                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7213                         return -EINVAL;
7214         }
7215
7216         if (!rdev->ops->change_bss)
7217                 return -EOPNOTSUPP;
7218
7219         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7220             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7221                 return -EOPNOTSUPP;
7222
7223         wdev_lock(wdev);
7224         err = rdev_change_bss(rdev, dev, &params);
7225         wdev_unlock(wdev);
7226
7227         return err;
7228 }
7229
7230 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7231 {
7232         char *data = NULL;
7233         bool is_indoor;
7234         enum nl80211_user_reg_hint_type user_reg_hint_type;
7235         u32 owner_nlportid;
7236
7237         /*
7238          * You should only get this when cfg80211 hasn't yet initialized
7239          * completely when built-in to the kernel right between the time
7240          * window between nl80211_init() and regulatory_init(), if that is
7241          * even possible.
7242          */
7243         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7244                 return -EINPROGRESS;
7245
7246         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7247                 user_reg_hint_type =
7248                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7249         else
7250                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7251
7252         switch (user_reg_hint_type) {
7253         case NL80211_USER_REG_HINT_USER:
7254         case NL80211_USER_REG_HINT_CELL_BASE:
7255                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7256                         return -EINVAL;
7257
7258                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7259                 return regulatory_hint_user(data, user_reg_hint_type);
7260         case NL80211_USER_REG_HINT_INDOOR:
7261                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7262                         owner_nlportid = info->snd_portid;
7263                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7264                 } else {
7265                         owner_nlportid = 0;
7266                         is_indoor = true;
7267                 }
7268
7269                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7270         default:
7271                 return -EINVAL;
7272         }
7273 }
7274
7275 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7276 {
7277         return reg_reload_regdb();
7278 }
7279
7280 static int nl80211_get_mesh_config(struct sk_buff *skb,
7281                                    struct genl_info *info)
7282 {
7283         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7284         struct net_device *dev = info->user_ptr[1];
7285         struct wireless_dev *wdev = dev->ieee80211_ptr;
7286         struct mesh_config cur_params;
7287         int err = 0;
7288         void *hdr;
7289         struct nlattr *pinfoattr;
7290         struct sk_buff *msg;
7291
7292         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7293                 return -EOPNOTSUPP;
7294
7295         if (!rdev->ops->get_mesh_config)
7296                 return -EOPNOTSUPP;
7297
7298         wdev_lock(wdev);
7299         /* If not connected, get default parameters */
7300         if (!wdev->mesh_id_len)
7301                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7302         else
7303                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7304         wdev_unlock(wdev);
7305
7306         if (err)
7307                 return err;
7308
7309         /* Draw up a netlink message to send back */
7310         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7311         if (!msg)
7312                 return -ENOMEM;
7313         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7314                              NL80211_CMD_GET_MESH_CONFIG);
7315         if (!hdr)
7316                 goto out;
7317         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7318         if (!pinfoattr)
7319                 goto nla_put_failure;
7320         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7321             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7322                         cur_params.dot11MeshRetryTimeout) ||
7323             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7324                         cur_params.dot11MeshConfirmTimeout) ||
7325             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7326                         cur_params.dot11MeshHoldingTimeout) ||
7327             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7328                         cur_params.dot11MeshMaxPeerLinks) ||
7329             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7330                        cur_params.dot11MeshMaxRetries) ||
7331             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7332                        cur_params.dot11MeshTTL) ||
7333             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7334                        cur_params.element_ttl) ||
7335             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7336                        cur_params.auto_open_plinks) ||
7337             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7338                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7339             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7340                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7341             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7342                         cur_params.path_refresh_time) ||
7343             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7344                         cur_params.min_discovery_timeout) ||
7345             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7346                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7347             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7348                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7349             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7350                         cur_params.dot11MeshHWMPperrMinInterval) ||
7351             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7352                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7353             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7354                        cur_params.dot11MeshHWMPRootMode) ||
7355             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7356                         cur_params.dot11MeshHWMPRannInterval) ||
7357             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7358                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7359             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7360                        cur_params.dot11MeshForwarding) ||
7361             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7362                         cur_params.rssi_threshold) ||
7363             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7364                         cur_params.ht_opmode) ||
7365             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7366                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7367             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7368                         cur_params.dot11MeshHWMProotInterval) ||
7369             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7370                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7371             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7372                         cur_params.power_mode) ||
7373             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7374                         cur_params.dot11MeshAwakeWindowDuration) ||
7375             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7376                         cur_params.plink_timeout) ||
7377             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7378                        cur_params.dot11MeshConnectedToMeshGate) ||
7379             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7380                        cur_params.dot11MeshNolearn) ||
7381             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7382                        cur_params.dot11MeshConnectedToAuthServer))
7383                 goto nla_put_failure;
7384         nla_nest_end(msg, pinfoattr);
7385         genlmsg_end(msg, hdr);
7386         return genlmsg_reply(msg, info);
7387
7388  nla_put_failure:
7389  out:
7390         nlmsg_free(msg);
7391         return -ENOBUFS;
7392 }
7393
7394 static const struct nla_policy
7395 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7396         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7397                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7398         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7399                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7400         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7401                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7402         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7403                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7404         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7405         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7406         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7407         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7408         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7409                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7410         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7411         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7412         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7413         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7414         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7415                 NLA_POLICY_MIN(NLA_U16, 1),
7416         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7417                 NLA_POLICY_MIN(NLA_U16, 1),
7418         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7419                 NLA_POLICY_MIN(NLA_U16, 1),
7420         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7421         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7422                 NLA_POLICY_MIN(NLA_U16, 1),
7423         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7424         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7425         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7426                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7427         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7428         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7429         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7430                 NLA_POLICY_MIN(NLA_U16, 1),
7431         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7432                 NLA_POLICY_MIN(NLA_U16, 1),
7433         [NL80211_MESHCONF_POWER_MODE] =
7434                 NLA_POLICY_RANGE(NLA_U32,
7435                                  NL80211_MESH_POWER_ACTIVE,
7436                                  NL80211_MESH_POWER_MAX),
7437         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7438         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7439         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7440         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7441         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7442 };
7443
7444 static const struct nla_policy
7445         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7446         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7447         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7448         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7449         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7450         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7451         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7452         [NL80211_MESH_SETUP_IE] =
7453                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7454                                        IEEE80211_MAX_DATA_LEN),
7455         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7456 };
7457
7458 static int nl80211_parse_mesh_config(struct genl_info *info,
7459                                      struct mesh_config *cfg,
7460                                      u32 *mask_out)
7461 {
7462         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7463         u32 mask = 0;
7464         u16 ht_opmode;
7465
7466 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7467 do {                                                                    \
7468         if (tb[attr]) {                                                 \
7469                 cfg->param = fn(tb[attr]);                              \
7470                 mask |= BIT((attr) - 1);                                \
7471         }                                                               \
7472 } while (0)
7473
7474         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7475                 return -EINVAL;
7476         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7477                 return -EINVAL;
7478
7479         /* This makes sure that there aren't more than 32 mesh config
7480          * parameters (otherwise our bitfield scheme would not work.) */
7481         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7482
7483         /* Fill in the params struct */
7484         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7485                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7486         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7487                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7488                                   nla_get_u16);
7489         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7490                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7491                                   nla_get_u16);
7492         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7493                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7494                                   nla_get_u16);
7495         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7496                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7497         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7498                                   NL80211_MESHCONF_TTL, nla_get_u8);
7499         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7500                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7501         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7502                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7503                                   nla_get_u8);
7504         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7505                                   mask,
7506                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7507                                   nla_get_u32);
7508         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7509                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7510                                   nla_get_u8);
7511         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7512                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7513                                   nla_get_u32);
7514         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7515             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7516                 return -EINVAL;
7517         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7518                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7519                                   nla_get_u16);
7520         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7521                                   mask,
7522                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7523                                   nla_get_u32);
7524         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7525             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7526              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7527                 return -EINVAL;
7528         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7529                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7530                                   nla_get_u16);
7531         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7532                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7533                                   nla_get_u16);
7534         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7535                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7536                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7537                                   nla_get_u16);
7538         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7539                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7540         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7541                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7542                                   nla_get_u16);
7543         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7544                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7545                                   nla_get_u8);
7546         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7547                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7548         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7549                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7550                                   nla_get_s32);
7551         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7552                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7553                                   nla_get_u8);
7554         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7555                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7556                                   nla_get_u8);
7557         /*
7558          * Check HT operation mode based on
7559          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7560          */
7561         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7562                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7563
7564                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7565                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7566                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7567                         return -EINVAL;
7568
7569                 /* NON_HT_STA bit is reserved, but some programs set it */
7570                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7571
7572                 cfg->ht_opmode = ht_opmode;
7573                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7574         }
7575         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7576                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7577                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7578                                   nla_get_u32);
7579         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7580             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7581              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7582                 return -EINVAL;
7583         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7584                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7585                                   nla_get_u16);
7586         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7587                                   mask,
7588                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7589                                   nla_get_u16);
7590         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7591                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7592         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7593                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7594         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7595                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7596         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7597                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7598         if (mask_out)
7599                 *mask_out = mask;
7600
7601         return 0;
7602
7603 #undef FILL_IN_MESH_PARAM_IF_SET
7604 }
7605
7606 static int nl80211_parse_mesh_setup(struct genl_info *info,
7607                                      struct mesh_setup *setup)
7608 {
7609         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7610         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7611
7612         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7613                 return -EINVAL;
7614         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7615                 return -EINVAL;
7616
7617         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7618                 setup->sync_method =
7619                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7620                  IEEE80211_SYNC_METHOD_VENDOR :
7621                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7622
7623         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7624                 setup->path_sel_proto =
7625                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7626                  IEEE80211_PATH_PROTOCOL_VENDOR :
7627                  IEEE80211_PATH_PROTOCOL_HWMP;
7628
7629         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7630                 setup->path_metric =
7631                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7632                  IEEE80211_PATH_METRIC_VENDOR :
7633                  IEEE80211_PATH_METRIC_AIRTIME;
7634
7635         if (tb[NL80211_MESH_SETUP_IE]) {
7636                 struct nlattr *ieattr =
7637                         tb[NL80211_MESH_SETUP_IE];
7638                 setup->ie = nla_data(ieattr);
7639                 setup->ie_len = nla_len(ieattr);
7640         }
7641         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7642             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7643                 return -EINVAL;
7644         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7645         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7646         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7647         if (setup->is_secure)
7648                 setup->user_mpm = true;
7649
7650         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7651                 if (!setup->user_mpm)
7652                         return -EINVAL;
7653                 setup->auth_id =
7654                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7655         }
7656
7657         return 0;
7658 }
7659
7660 static int nl80211_update_mesh_config(struct sk_buff *skb,
7661                                       struct genl_info *info)
7662 {
7663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7664         struct net_device *dev = info->user_ptr[1];
7665         struct wireless_dev *wdev = dev->ieee80211_ptr;
7666         struct mesh_config cfg;
7667         u32 mask;
7668         int err;
7669
7670         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7671                 return -EOPNOTSUPP;
7672
7673         if (!rdev->ops->update_mesh_config)
7674                 return -EOPNOTSUPP;
7675
7676         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7677         if (err)
7678                 return err;
7679
7680         wdev_lock(wdev);
7681         if (!wdev->mesh_id_len)
7682                 err = -ENOLINK;
7683
7684         if (!err)
7685                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7686
7687         wdev_unlock(wdev);
7688
7689         return err;
7690 }
7691
7692 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7693                               struct sk_buff *msg)
7694 {
7695         struct nlattr *nl_reg_rules;
7696         unsigned int i;
7697
7698         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7699             (regdom->dfs_region &&
7700              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7701                 goto nla_put_failure;
7702
7703         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7704         if (!nl_reg_rules)
7705                 goto nla_put_failure;
7706
7707         for (i = 0; i < regdom->n_reg_rules; i++) {
7708                 struct nlattr *nl_reg_rule;
7709                 const struct ieee80211_reg_rule *reg_rule;
7710                 const struct ieee80211_freq_range *freq_range;
7711                 const struct ieee80211_power_rule *power_rule;
7712                 unsigned int max_bandwidth_khz;
7713
7714                 reg_rule = &regdom->reg_rules[i];
7715                 freq_range = &reg_rule->freq_range;
7716                 power_rule = &reg_rule->power_rule;
7717
7718                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7719                 if (!nl_reg_rule)
7720                         goto nla_put_failure;
7721
7722                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7723                 if (!max_bandwidth_khz)
7724                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7725                                                                   reg_rule);
7726
7727                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7728                                 reg_rule->flags) ||
7729                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7730                                 freq_range->start_freq_khz) ||
7731                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7732                                 freq_range->end_freq_khz) ||
7733                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7734                                 max_bandwidth_khz) ||
7735                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7736                                 power_rule->max_antenna_gain) ||
7737                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7738                                 power_rule->max_eirp) ||
7739                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7740                                 reg_rule->dfs_cac_ms))
7741                         goto nla_put_failure;
7742
7743                 nla_nest_end(msg, nl_reg_rule);
7744         }
7745
7746         nla_nest_end(msg, nl_reg_rules);
7747         return 0;
7748
7749 nla_put_failure:
7750         return -EMSGSIZE;
7751 }
7752
7753 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7754 {
7755         const struct ieee80211_regdomain *regdom = NULL;
7756         struct cfg80211_registered_device *rdev;
7757         struct wiphy *wiphy = NULL;
7758         struct sk_buff *msg;
7759         void *hdr;
7760
7761         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7762         if (!msg)
7763                 return -ENOBUFS;
7764
7765         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7766                              NL80211_CMD_GET_REG);
7767         if (!hdr)
7768                 goto put_failure;
7769
7770         rtnl_lock();
7771
7772         if (info->attrs[NL80211_ATTR_WIPHY]) {
7773                 bool self_managed;
7774
7775                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7776                 if (IS_ERR(rdev)) {
7777                         nlmsg_free(msg);
7778                         rtnl_unlock();
7779                         return PTR_ERR(rdev);
7780                 }
7781
7782                 wiphy = &rdev->wiphy;
7783                 self_managed = wiphy->regulatory_flags &
7784                                REGULATORY_WIPHY_SELF_MANAGED;
7785                 regdom = get_wiphy_regdom(wiphy);
7786
7787                 /* a self-managed-reg device must have a private regdom */
7788                 if (WARN_ON(!regdom && self_managed)) {
7789                         nlmsg_free(msg);
7790                         rtnl_unlock();
7791                         return -EINVAL;
7792                 }
7793
7794                 if (regdom &&
7795                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7796                         goto nla_put_failure;
7797         }
7798
7799         if (!wiphy && reg_last_request_cell_base() &&
7800             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7801                         NL80211_USER_REG_HINT_CELL_BASE))
7802                 goto nla_put_failure;
7803
7804         rcu_read_lock();
7805
7806         if (!regdom)
7807                 regdom = rcu_dereference(cfg80211_regdomain);
7808
7809         if (nl80211_put_regdom(regdom, msg))
7810                 goto nla_put_failure_rcu;
7811
7812         rcu_read_unlock();
7813
7814         genlmsg_end(msg, hdr);
7815         rtnl_unlock();
7816         return genlmsg_reply(msg, info);
7817
7818 nla_put_failure_rcu:
7819         rcu_read_unlock();
7820 nla_put_failure:
7821         rtnl_unlock();
7822 put_failure:
7823         nlmsg_free(msg);
7824         return -EMSGSIZE;
7825 }
7826
7827 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7828                                u32 seq, int flags, struct wiphy *wiphy,
7829                                const struct ieee80211_regdomain *regdom)
7830 {
7831         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7832                                    NL80211_CMD_GET_REG);
7833
7834         if (!hdr)
7835                 return -1;
7836
7837         genl_dump_check_consistent(cb, hdr);
7838
7839         if (nl80211_put_regdom(regdom, msg))
7840                 goto nla_put_failure;
7841
7842         if (!wiphy && reg_last_request_cell_base() &&
7843             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7844                         NL80211_USER_REG_HINT_CELL_BASE))
7845                 goto nla_put_failure;
7846
7847         if (wiphy &&
7848             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7849                 goto nla_put_failure;
7850
7851         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7852             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7853                 goto nla_put_failure;
7854
7855         genlmsg_end(msg, hdr);
7856         return 0;
7857
7858 nla_put_failure:
7859         genlmsg_cancel(msg, hdr);
7860         return -EMSGSIZE;
7861 }
7862
7863 static int nl80211_get_reg_dump(struct sk_buff *skb,
7864                                 struct netlink_callback *cb)
7865 {
7866         const struct ieee80211_regdomain *regdom = NULL;
7867         struct cfg80211_registered_device *rdev;
7868         int err, reg_idx, start = cb->args[2];
7869
7870         rtnl_lock();
7871
7872         if (cfg80211_regdomain && start == 0) {
7873                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7874                                           NLM_F_MULTI, NULL,
7875                                           rtnl_dereference(cfg80211_regdomain));
7876                 if (err < 0)
7877                         goto out_err;
7878         }
7879
7880         /* the global regdom is idx 0 */
7881         reg_idx = 1;
7882         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7883                 regdom = get_wiphy_regdom(&rdev->wiphy);
7884                 if (!regdom)
7885                         continue;
7886
7887                 if (++reg_idx <= start)
7888                         continue;
7889
7890                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7891                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7892                 if (err < 0) {
7893                         reg_idx--;
7894                         break;
7895                 }
7896         }
7897
7898         cb->args[2] = reg_idx;
7899         err = skb->len;
7900 out_err:
7901         rtnl_unlock();
7902         return err;
7903 }
7904
7905 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7906 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7907         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7908         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7909         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7910         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7911         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7912         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7913         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7914 };
7915
7916 static int parse_reg_rule(struct nlattr *tb[],
7917         struct ieee80211_reg_rule *reg_rule)
7918 {
7919         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7920         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7921
7922         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7923                 return -EINVAL;
7924         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7925                 return -EINVAL;
7926         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7927                 return -EINVAL;
7928         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7929                 return -EINVAL;
7930         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7931                 return -EINVAL;
7932
7933         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7934
7935         freq_range->start_freq_khz =
7936                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7937         freq_range->end_freq_khz =
7938                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7939         freq_range->max_bandwidth_khz =
7940                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7941
7942         power_rule->max_eirp =
7943                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7944
7945         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7946                 power_rule->max_antenna_gain =
7947                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7948
7949         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7950                 reg_rule->dfs_cac_ms =
7951                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7952
7953         return 0;
7954 }
7955
7956 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7957 {
7958         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7959         struct nlattr *nl_reg_rule;
7960         char *alpha2;
7961         int rem_reg_rules, r;
7962         u32 num_rules = 0, rule_idx = 0;
7963         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7964         struct ieee80211_regdomain *rd;
7965
7966         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7967                 return -EINVAL;
7968
7969         if (!info->attrs[NL80211_ATTR_REG_RULES])
7970                 return -EINVAL;
7971
7972         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7973
7974         if (info->attrs[NL80211_ATTR_DFS_REGION])
7975                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7976
7977         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7978                             rem_reg_rules) {
7979                 num_rules++;
7980                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7981                         return -EINVAL;
7982         }
7983
7984         rtnl_lock();
7985         if (!reg_is_valid_request(alpha2)) {
7986                 r = -EINVAL;
7987                 goto out;
7988         }
7989
7990         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7991         if (!rd) {
7992                 r = -ENOMEM;
7993                 goto out;
7994         }
7995
7996         rd->n_reg_rules = num_rules;
7997         rd->alpha2[0] = alpha2[0];
7998         rd->alpha2[1] = alpha2[1];
7999
8000         /*
8001          * Disable DFS master mode if the DFS region was
8002          * not supported or known on this kernel.
8003          */
8004         if (reg_supported_dfs_region(dfs_region))
8005                 rd->dfs_region = dfs_region;
8006
8007         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8008                             rem_reg_rules) {
8009                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8010                                                 nl_reg_rule, reg_rule_policy,
8011                                                 info->extack);
8012                 if (r)
8013                         goto bad_reg;
8014                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8015                 if (r)
8016                         goto bad_reg;
8017
8018                 rule_idx++;
8019
8020                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8021                         r = -EINVAL;
8022                         goto bad_reg;
8023                 }
8024         }
8025
8026         r = set_regdom(rd, REGD_SOURCE_CRDA);
8027         /* set_regdom takes ownership of rd */
8028         rd = NULL;
8029  bad_reg:
8030         kfree(rd);
8031  out:
8032         rtnl_unlock();
8033         return r;
8034 }
8035 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8036
8037 static int validate_scan_freqs(struct nlattr *freqs)
8038 {
8039         struct nlattr *attr1, *attr2;
8040         int n_channels = 0, tmp1, tmp2;
8041
8042         nla_for_each_nested(attr1, freqs, tmp1)
8043                 if (nla_len(attr1) != sizeof(u32))
8044                         return 0;
8045
8046         nla_for_each_nested(attr1, freqs, tmp1) {
8047                 n_channels++;
8048                 /*
8049                  * Some hardware has a limited channel list for
8050                  * scanning, and it is pretty much nonsensical
8051                  * to scan for a channel twice, so disallow that
8052                  * and don't require drivers to check that the
8053                  * channel list they get isn't longer than what
8054                  * they can scan, as long as they can scan all
8055                  * the channels they registered at once.
8056                  */
8057                 nla_for_each_nested(attr2, freqs, tmp2)
8058                         if (attr1 != attr2 &&
8059                             nla_get_u32(attr1) == nla_get_u32(attr2))
8060                                 return 0;
8061         }
8062
8063         return n_channels;
8064 }
8065
8066 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8067 {
8068         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8069 }
8070
8071 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8072                             struct cfg80211_bss_selection *bss_select)
8073 {
8074         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8075         struct nlattr *nest;
8076         int err;
8077         bool found = false;
8078         int i;
8079
8080         /* only process one nested attribute */
8081         nest = nla_data(nla);
8082         if (!nla_ok(nest, nla_len(nest)))
8083                 return -EINVAL;
8084
8085         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8086                                           nest, nl80211_bss_select_policy,
8087                                           NULL);
8088         if (err)
8089                 return err;
8090
8091         /* only one attribute may be given */
8092         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8093                 if (attr[i]) {
8094                         if (found)
8095                                 return -EINVAL;
8096                         found = true;
8097                 }
8098         }
8099
8100         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8101
8102         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8103                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8104
8105         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8106                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8107                 bss_select->param.band_pref =
8108                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8109                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8110                         return -EINVAL;
8111         }
8112
8113         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8114                 struct nl80211_bss_select_rssi_adjust *adj_param;
8115
8116                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8117                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8118                 bss_select->param.adjust.band = adj_param->band;
8119                 bss_select->param.adjust.delta = adj_param->delta;
8120                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8121                         return -EINVAL;
8122         }
8123
8124         /* user-space did not provide behaviour attribute */
8125         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8126                 return -EINVAL;
8127
8128         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8129                 return -EINVAL;
8130
8131         return 0;
8132 }
8133
8134 int nl80211_parse_random_mac(struct nlattr **attrs,
8135                              u8 *mac_addr, u8 *mac_addr_mask)
8136 {
8137         int i;
8138
8139         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8140                 eth_zero_addr(mac_addr);
8141                 eth_zero_addr(mac_addr_mask);
8142                 mac_addr[0] = 0x2;
8143                 mac_addr_mask[0] = 0x3;
8144
8145                 return 0;
8146         }
8147
8148         /* need both or none */
8149         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8150                 return -EINVAL;
8151
8152         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8153         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8154
8155         /* don't allow or configure an mcast address */
8156         if (!is_multicast_ether_addr(mac_addr_mask) ||
8157             is_multicast_ether_addr(mac_addr))
8158                 return -EINVAL;
8159
8160         /*
8161          * allow users to pass a MAC address that has bits set outside
8162          * of the mask, but don't bother drivers with having to deal
8163          * with such bits
8164          */
8165         for (i = 0; i < ETH_ALEN; i++)
8166                 mac_addr[i] &= mac_addr_mask[i];
8167
8168         return 0;
8169 }
8170
8171 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8172 {
8173         ASSERT_WDEV_LOCK(wdev);
8174
8175         if (!cfg80211_beaconing_iface_active(wdev))
8176                 return true;
8177
8178         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8179                 return true;
8180
8181         return regulatory_pre_cac_allowed(wdev->wiphy);
8182 }
8183
8184 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8185                                     enum nl80211_ext_feature_index feat)
8186 {
8187         if (!(flags & flag))
8188                 return true;
8189         if (wiphy_ext_feature_isset(wiphy, feat))
8190                 return true;
8191         return false;
8192 }
8193
8194 static int
8195 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8196                          void *request, struct nlattr **attrs,
8197                          bool is_sched_scan)
8198 {
8199         u8 *mac_addr, *mac_addr_mask;
8200         u32 *flags;
8201         enum nl80211_feature_flags randomness_flag;
8202
8203         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8204                 return 0;
8205
8206         if (is_sched_scan) {
8207                 struct cfg80211_sched_scan_request *req = request;
8208
8209                 randomness_flag = wdev ?
8210                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8211                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8212                 flags = &req->flags;
8213                 mac_addr = req->mac_addr;
8214                 mac_addr_mask = req->mac_addr_mask;
8215         } else {
8216                 struct cfg80211_scan_request *req = request;
8217
8218                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8219                 flags = &req->flags;
8220                 mac_addr = req->mac_addr;
8221                 mac_addr_mask = req->mac_addr_mask;
8222         }
8223
8224         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8225
8226         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8227              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8228             !nl80211_check_scan_feat(wiphy, *flags,
8229                                      NL80211_SCAN_FLAG_LOW_SPAN,
8230                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8231             !nl80211_check_scan_feat(wiphy, *flags,
8232                                      NL80211_SCAN_FLAG_LOW_POWER,
8233                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8234             !nl80211_check_scan_feat(wiphy, *flags,
8235                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8236                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8237             !nl80211_check_scan_feat(wiphy, *flags,
8238                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8239                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8240             !nl80211_check_scan_feat(wiphy, *flags,
8241                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8242                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8243             !nl80211_check_scan_feat(wiphy, *flags,
8244                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8245                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8246             !nl80211_check_scan_feat(wiphy, *flags,
8247                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8248                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8249             !nl80211_check_scan_feat(wiphy, *flags,
8250                                      NL80211_SCAN_FLAG_RANDOM_SN,
8251                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8252             !nl80211_check_scan_feat(wiphy, *flags,
8253                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8254                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8255                 return -EOPNOTSUPP;
8256
8257         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8258                 int err;
8259
8260                 if (!(wiphy->features & randomness_flag) ||
8261                     (wdev && wdev->current_bss))
8262                         return -EOPNOTSUPP;
8263
8264                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8265                 if (err)
8266                         return err;
8267         }
8268
8269         return 0;
8270 }
8271
8272 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8273 {
8274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8275         struct wireless_dev *wdev = info->user_ptr[1];
8276         struct cfg80211_scan_request *request;
8277         struct nlattr *scan_freqs = NULL;
8278         bool scan_freqs_khz = false;
8279         struct nlattr *attr;
8280         struct wiphy *wiphy;
8281         int err, tmp, n_ssids = 0, n_channels, i;
8282         size_t ie_len;
8283
8284         wiphy = &rdev->wiphy;
8285
8286         if (wdev->iftype == NL80211_IFTYPE_NAN)
8287                 return -EOPNOTSUPP;
8288
8289         if (!rdev->ops->scan)
8290                 return -EOPNOTSUPP;
8291
8292         if (rdev->scan_req || rdev->scan_msg)
8293                 return -EBUSY;
8294
8295         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8296                 if (!wiphy_ext_feature_isset(wiphy,
8297                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8298                         return -EOPNOTSUPP;
8299                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8300                 scan_freqs_khz = true;
8301         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8302                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8303
8304         if (scan_freqs) {
8305                 n_channels = validate_scan_freqs(scan_freqs);
8306                 if (!n_channels)
8307                         return -EINVAL;
8308         } else {
8309                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8310         }
8311
8312         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8313                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8314                         n_ssids++;
8315
8316         if (n_ssids > wiphy->max_scan_ssids)
8317                 return -EINVAL;
8318
8319         if (info->attrs[NL80211_ATTR_IE])
8320                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8321         else
8322                 ie_len = 0;
8323
8324         if (ie_len > wiphy->max_scan_ie_len)
8325                 return -EINVAL;
8326
8327         request = kzalloc(sizeof(*request)
8328                         + sizeof(*request->ssids) * n_ssids
8329                         + sizeof(*request->channels) * n_channels
8330                         + ie_len, GFP_KERNEL);
8331         if (!request)
8332                 return -ENOMEM;
8333
8334         if (n_ssids)
8335                 request->ssids = (void *)&request->channels[n_channels];
8336         request->n_ssids = n_ssids;
8337         if (ie_len) {
8338                 if (n_ssids)
8339                         request->ie = (void *)(request->ssids + n_ssids);
8340                 else
8341                         request->ie = (void *)(request->channels + n_channels);
8342         }
8343
8344         i = 0;
8345         if (scan_freqs) {
8346                 /* user specified, bail out if channel not found */
8347                 nla_for_each_nested(attr, scan_freqs, tmp) {
8348                         struct ieee80211_channel *chan;
8349                         int freq = nla_get_u32(attr);
8350
8351                         if (!scan_freqs_khz)
8352                                 freq = MHZ_TO_KHZ(freq);
8353
8354                         chan = ieee80211_get_channel_khz(wiphy, freq);
8355                         if (!chan) {
8356                                 err = -EINVAL;
8357                                 goto out_free;
8358                         }
8359
8360                         /* ignore disabled channels */
8361                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8362                                 continue;
8363
8364                         request->channels[i] = chan;
8365                         i++;
8366                 }
8367         } else {
8368                 enum nl80211_band band;
8369
8370                 /* all channels */
8371                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8372                         int j;
8373
8374                         if (!wiphy->bands[band])
8375                                 continue;
8376                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8377                                 struct ieee80211_channel *chan;
8378
8379                                 chan = &wiphy->bands[band]->channels[j];
8380
8381                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8382                                         continue;
8383
8384                                 request->channels[i] = chan;
8385                                 i++;
8386                         }
8387                 }
8388         }
8389
8390         if (!i) {
8391                 err = -EINVAL;
8392                 goto out_free;
8393         }
8394
8395         request->n_channels = i;
8396
8397         wdev_lock(wdev);
8398         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8399                 struct ieee80211_channel *chan;
8400
8401                 if (request->n_channels != 1) {
8402                         wdev_unlock(wdev);
8403                         err = -EBUSY;
8404                         goto out_free;
8405                 }
8406
8407                 chan = request->channels[0];
8408                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8409                         wdev_unlock(wdev);
8410                         err = -EBUSY;
8411                         goto out_free;
8412                 }
8413         }
8414         wdev_unlock(wdev);
8415
8416         i = 0;
8417         if (n_ssids) {
8418                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8419                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8420                                 err = -EINVAL;
8421                                 goto out_free;
8422                         }
8423                         request->ssids[i].ssid_len = nla_len(attr);
8424                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8425                         i++;
8426                 }
8427         }
8428
8429         if (info->attrs[NL80211_ATTR_IE]) {
8430                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8431                 memcpy((void *)request->ie,
8432                        nla_data(info->attrs[NL80211_ATTR_IE]),
8433                        request->ie_len);
8434         }
8435
8436         for (i = 0; i < NUM_NL80211_BANDS; i++)
8437                 if (wiphy->bands[i])
8438                         request->rates[i] =
8439                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8440
8441         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8442                 nla_for_each_nested(attr,
8443                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8444                                     tmp) {
8445                         enum nl80211_band band = nla_type(attr);
8446
8447                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8448                                 err = -EINVAL;
8449                                 goto out_free;
8450                         }
8451
8452                         if (!wiphy->bands[band])
8453                                 continue;
8454
8455                         err = ieee80211_get_ratemask(wiphy->bands[band],
8456                                                      nla_data(attr),
8457                                                      nla_len(attr),
8458                                                      &request->rates[band]);
8459                         if (err)
8460                                 goto out_free;
8461                 }
8462         }
8463
8464         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8465                 request->duration =
8466                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8467                 request->duration_mandatory =
8468                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8469         }
8470
8471         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8472                                        false);
8473         if (err)
8474                 goto out_free;
8475
8476         request->no_cck =
8477                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8478
8479         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8480          * BSSID to scan for. This was problematic because that same attribute
8481          * was already used for another purpose (local random MAC address). The
8482          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8483          * compatibility with older userspace components, also use the
8484          * NL80211_ATTR_MAC value here if it can be determined to be used for
8485          * the specific BSSID use case instead of the random MAC address
8486          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8487          */
8488         if (info->attrs[NL80211_ATTR_BSSID])
8489                 memcpy(request->bssid,
8490                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8491         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8492                  info->attrs[NL80211_ATTR_MAC])
8493                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8494                        ETH_ALEN);
8495         else
8496                 eth_broadcast_addr(request->bssid);
8497
8498         request->wdev = wdev;
8499         request->wiphy = &rdev->wiphy;
8500         request->scan_start = jiffies;
8501
8502         rdev->scan_req = request;
8503         err = cfg80211_scan(rdev);
8504
8505         if (err)
8506                 goto out_free;
8507
8508         nl80211_send_scan_start(rdev, wdev);
8509         dev_hold(wdev->netdev);
8510
8511         return 0;
8512
8513  out_free:
8514         rdev->scan_req = NULL;
8515         kfree(request);
8516
8517         return err;
8518 }
8519
8520 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8521 {
8522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8523         struct wireless_dev *wdev = info->user_ptr[1];
8524
8525         if (!rdev->ops->abort_scan)
8526                 return -EOPNOTSUPP;
8527
8528         if (rdev->scan_msg)
8529                 return 0;
8530
8531         if (!rdev->scan_req)
8532                 return -ENOENT;
8533
8534         rdev_abort_scan(rdev, wdev);
8535         return 0;
8536 }
8537
8538 static int
8539 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8540                                struct cfg80211_sched_scan_request *request,
8541                                struct nlattr **attrs)
8542 {
8543         int tmp, err, i = 0;
8544         struct nlattr *attr;
8545
8546         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8547                 u32 interval;
8548
8549                 /*
8550                  * If scan plans are not specified,
8551                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8552                  * case one scan plan will be set with the specified scan
8553                  * interval and infinite number of iterations.
8554                  */
8555                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8556                 if (!interval)
8557                         return -EINVAL;
8558
8559                 request->scan_plans[0].interval =
8560                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8561                 if (!request->scan_plans[0].interval)
8562                         return -EINVAL;
8563
8564                 if (request->scan_plans[0].interval >
8565                     wiphy->max_sched_scan_plan_interval)
8566                         request->scan_plans[0].interval =
8567                                 wiphy->max_sched_scan_plan_interval;
8568
8569                 return 0;
8570         }
8571
8572         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8573                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8574
8575                 if (WARN_ON(i >= n_plans))
8576                         return -EINVAL;
8577
8578                 err = nla_parse_nested_deprecated(plan,
8579                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8580                                                   attr, nl80211_plan_policy,
8581                                                   NULL);
8582                 if (err)
8583                         return err;
8584
8585                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8586                         return -EINVAL;
8587
8588                 request->scan_plans[i].interval =
8589                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8590                 if (!request->scan_plans[i].interval ||
8591                     request->scan_plans[i].interval >
8592                     wiphy->max_sched_scan_plan_interval)
8593                         return -EINVAL;
8594
8595                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8596                         request->scan_plans[i].iterations =
8597                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8598                         if (!request->scan_plans[i].iterations ||
8599                             (request->scan_plans[i].iterations >
8600                              wiphy->max_sched_scan_plan_iterations))
8601                                 return -EINVAL;
8602                 } else if (i < n_plans - 1) {
8603                         /*
8604                          * All scan plans but the last one must specify
8605                          * a finite number of iterations
8606                          */
8607                         return -EINVAL;
8608                 }
8609
8610                 i++;
8611         }
8612
8613         /*
8614          * The last scan plan must not specify the number of
8615          * iterations, it is supposed to run infinitely
8616          */
8617         if (request->scan_plans[n_plans - 1].iterations)
8618                 return  -EINVAL;
8619
8620         return 0;
8621 }
8622
8623 static int
8624 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8625                                        struct cfg80211_match_set *match_sets,
8626                                        struct nlattr *tb_band_rssi,
8627                                        s32 rssi_thold)
8628 {
8629         struct nlattr *attr;
8630         int i, tmp, ret = 0;
8631
8632         if (!wiphy_ext_feature_isset(wiphy,
8633                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8634                 if (tb_band_rssi)
8635                         ret = -EOPNOTSUPP;
8636                 else
8637                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8638                                 match_sets->per_band_rssi_thold[i] =
8639                                         NL80211_SCAN_RSSI_THOLD_OFF;
8640                 return ret;
8641         }
8642
8643         for (i = 0; i < NUM_NL80211_BANDS; i++)
8644                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8645
8646         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8647                 enum nl80211_band band = nla_type(attr);
8648
8649                 if (band < 0 || band >= NUM_NL80211_BANDS)
8650                         return -EINVAL;
8651
8652                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8653         }
8654
8655         return 0;
8656 }
8657
8658 static struct cfg80211_sched_scan_request *
8659 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8660                          struct nlattr **attrs, int max_match_sets)
8661 {
8662         struct cfg80211_sched_scan_request *request;
8663         struct nlattr *attr;
8664         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8665         enum nl80211_band band;
8666         size_t ie_len;
8667         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8668         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8669
8670         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8671                 n_channels = validate_scan_freqs(
8672                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8673                 if (!n_channels)
8674                         return ERR_PTR(-EINVAL);
8675         } else {
8676                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8677         }
8678
8679         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8680                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8681                                     tmp)
8682                         n_ssids++;
8683
8684         if (n_ssids > wiphy->max_sched_scan_ssids)
8685                 return ERR_PTR(-EINVAL);
8686
8687         /*
8688          * First, count the number of 'real' matchsets. Due to an issue with
8689          * the old implementation, matchsets containing only the RSSI attribute
8690          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8691          * RSSI for all matchsets, rather than their own matchset for reporting
8692          * all APs with a strong RSSI. This is needed to be compatible with
8693          * older userspace that treated a matchset with only the RSSI as the
8694          * global RSSI for all other matchsets - if there are other matchsets.
8695          */
8696         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8697                 nla_for_each_nested(attr,
8698                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8699                                     tmp) {
8700                         struct nlattr *rssi;
8701
8702                         err = nla_parse_nested_deprecated(tb,
8703                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8704                                                           attr,
8705                                                           nl80211_match_policy,
8706                                                           NULL);
8707                         if (err)
8708                                 return ERR_PTR(err);
8709
8710                         /* SSID and BSSID are mutually exclusive */
8711                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8712                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8713                                 return ERR_PTR(-EINVAL);
8714
8715                         /* add other standalone attributes here */
8716                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8717                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8718                                 n_match_sets++;
8719                                 continue;
8720                         }
8721                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8722                         if (rssi)
8723                                 default_match_rssi = nla_get_s32(rssi);
8724                 }
8725         }
8726
8727         /* However, if there's no other matchset, add the RSSI one */
8728         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8729                 n_match_sets = 1;
8730
8731         if (n_match_sets > max_match_sets)
8732                 return ERR_PTR(-EINVAL);
8733
8734         if (attrs[NL80211_ATTR_IE])
8735                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8736         else
8737                 ie_len = 0;
8738
8739         if (ie_len > wiphy->max_sched_scan_ie_len)
8740                 return ERR_PTR(-EINVAL);
8741
8742         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8743                 /*
8744                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8745                  * each scan plan already specifies its own interval
8746                  */
8747                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8748                         return ERR_PTR(-EINVAL);
8749
8750                 nla_for_each_nested(attr,
8751                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8752                         n_plans++;
8753         } else {
8754                 /*
8755                  * The scan interval attribute is kept for backward
8756                  * compatibility. If no scan plans are specified and sched scan
8757                  * interval is specified, one scan plan will be set with this
8758                  * scan interval and infinite number of iterations.
8759                  */
8760                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8761                         return ERR_PTR(-EINVAL);
8762
8763                 n_plans = 1;
8764         }
8765
8766         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8767                 return ERR_PTR(-EINVAL);
8768
8769         if (!wiphy_ext_feature_isset(
8770                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8771             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8772              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8773                 return ERR_PTR(-EINVAL);
8774
8775         request = kzalloc(sizeof(*request)
8776                         + sizeof(*request->ssids) * n_ssids
8777                         + sizeof(*request->match_sets) * n_match_sets
8778                         + sizeof(*request->scan_plans) * n_plans
8779                         + sizeof(*request->channels) * n_channels
8780                         + ie_len, GFP_KERNEL);
8781         if (!request)
8782                 return ERR_PTR(-ENOMEM);
8783
8784         if (n_ssids)
8785                 request->ssids = (void *)&request->channels[n_channels];
8786         request->n_ssids = n_ssids;
8787         if (ie_len) {
8788                 if (n_ssids)
8789                         request->ie = (void *)(request->ssids + n_ssids);
8790                 else
8791                         request->ie = (void *)(request->channels + n_channels);
8792         }
8793
8794         if (n_match_sets) {
8795                 if (request->ie)
8796                         request->match_sets = (void *)(request->ie + ie_len);
8797                 else if (n_ssids)
8798                         request->match_sets =
8799                                 (void *)(request->ssids + n_ssids);
8800                 else
8801                         request->match_sets =
8802                                 (void *)(request->channels + n_channels);
8803         }
8804         request->n_match_sets = n_match_sets;
8805
8806         if (n_match_sets)
8807                 request->scan_plans = (void *)(request->match_sets +
8808                                                n_match_sets);
8809         else if (request->ie)
8810                 request->scan_plans = (void *)(request->ie + ie_len);
8811         else if (n_ssids)
8812                 request->scan_plans = (void *)(request->ssids + n_ssids);
8813         else
8814                 request->scan_plans = (void *)(request->channels + n_channels);
8815
8816         request->n_scan_plans = n_plans;
8817
8818         i = 0;
8819         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8820                 /* user specified, bail out if channel not found */
8821                 nla_for_each_nested(attr,
8822                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8823                                     tmp) {
8824                         struct ieee80211_channel *chan;
8825
8826                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8827
8828                         if (!chan) {
8829                                 err = -EINVAL;
8830                                 goto out_free;
8831                         }
8832
8833                         /* ignore disabled channels */
8834                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8835                                 continue;
8836
8837                         request->channels[i] = chan;
8838                         i++;
8839                 }
8840         } else {
8841                 /* all channels */
8842                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8843                         int j;
8844
8845                         if (!wiphy->bands[band])
8846                                 continue;
8847                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8848                                 struct ieee80211_channel *chan;
8849
8850                                 chan = &wiphy->bands[band]->channels[j];
8851
8852                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8853                                         continue;
8854
8855                                 request->channels[i] = chan;
8856                                 i++;
8857                         }
8858                 }
8859         }
8860
8861         if (!i) {
8862                 err = -EINVAL;
8863                 goto out_free;
8864         }
8865
8866         request->n_channels = i;
8867
8868         i = 0;
8869         if (n_ssids) {
8870                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8871                                     tmp) {
8872                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8873                                 err = -EINVAL;
8874                                 goto out_free;
8875                         }
8876                         request->ssids[i].ssid_len = nla_len(attr);
8877                         memcpy(request->ssids[i].ssid, nla_data(attr),
8878                                nla_len(attr));
8879                         i++;
8880                 }
8881         }
8882
8883         i = 0;
8884         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8885                 nla_for_each_nested(attr,
8886                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8887                                     tmp) {
8888                         struct nlattr *ssid, *bssid, *rssi;
8889
8890                         err = nla_parse_nested_deprecated(tb,
8891                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8892                                                           attr,
8893                                                           nl80211_match_policy,
8894                                                           NULL);
8895                         if (err)
8896                                 goto out_free;
8897                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8898                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8899
8900                         if (!ssid && !bssid) {
8901                                 i++;
8902                                 continue;
8903                         }
8904
8905                         if (WARN_ON(i >= n_match_sets)) {
8906                                 /* this indicates a programming error,
8907                                  * the loop above should have verified
8908                                  * things properly
8909                                  */
8910                                 err = -EINVAL;
8911                                 goto out_free;
8912                         }
8913
8914                         if (ssid) {
8915                                 memcpy(request->match_sets[i].ssid.ssid,
8916                                        nla_data(ssid), nla_len(ssid));
8917                                 request->match_sets[i].ssid.ssid_len =
8918                                         nla_len(ssid);
8919                         }
8920                         if (bssid)
8921                                 memcpy(request->match_sets[i].bssid,
8922                                        nla_data(bssid), ETH_ALEN);
8923
8924                         /* special attribute - old implementation w/a */
8925                         request->match_sets[i].rssi_thold = default_match_rssi;
8926                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8927                         if (rssi)
8928                                 request->match_sets[i].rssi_thold =
8929                                         nla_get_s32(rssi);
8930
8931                         /* Parse per band RSSI attribute */
8932                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8933                                 &request->match_sets[i],
8934                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8935                                 request->match_sets[i].rssi_thold);
8936                         if (err)
8937                                 goto out_free;
8938
8939                         i++;
8940                 }
8941
8942                 /* there was no other matchset, so the RSSI one is alone */
8943                 if (i == 0 && n_match_sets)
8944                         request->match_sets[0].rssi_thold = default_match_rssi;
8945
8946                 request->min_rssi_thold = INT_MAX;
8947                 for (i = 0; i < n_match_sets; i++)
8948                         request->min_rssi_thold =
8949                                 min(request->match_sets[i].rssi_thold,
8950                                     request->min_rssi_thold);
8951         } else {
8952                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8953         }
8954
8955         if (ie_len) {
8956                 request->ie_len = ie_len;
8957                 memcpy((void *)request->ie,
8958                        nla_data(attrs[NL80211_ATTR_IE]),
8959                        request->ie_len);
8960         }
8961
8962         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8963         if (err)
8964                 goto out_free;
8965
8966         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8967                 request->delay =
8968                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8969
8970         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8971                 request->relative_rssi = nla_get_s8(
8972                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8973                 request->relative_rssi_set = true;
8974         }
8975
8976         if (request->relative_rssi_set &&
8977             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8978                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8979
8980                 rssi_adjust = nla_data(
8981                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8982                 request->rssi_adjust.band = rssi_adjust->band;
8983                 request->rssi_adjust.delta = rssi_adjust->delta;
8984                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8985                         err = -EINVAL;
8986                         goto out_free;
8987                 }
8988         }
8989
8990         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8991         if (err)
8992                 goto out_free;
8993
8994         request->scan_start = jiffies;
8995
8996         return request;
8997
8998 out_free:
8999         kfree(request);
9000         return ERR_PTR(err);
9001 }
9002
9003 static int nl80211_start_sched_scan(struct sk_buff *skb,
9004                                     struct genl_info *info)
9005 {
9006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9007         struct net_device *dev = info->user_ptr[1];
9008         struct wireless_dev *wdev = dev->ieee80211_ptr;
9009         struct cfg80211_sched_scan_request *sched_scan_req;
9010         bool want_multi;
9011         int err;
9012
9013         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9014                 return -EOPNOTSUPP;
9015
9016         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9017         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9018         if (err)
9019                 return err;
9020
9021         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9022                                                   info->attrs,
9023                                                   rdev->wiphy.max_match_sets);
9024
9025         err = PTR_ERR_OR_ZERO(sched_scan_req);
9026         if (err)
9027                 goto out_err;
9028
9029         /* leave request id zero for legacy request
9030          * or if driver does not support multi-scheduled scan
9031          */
9032         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9033                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9034
9035         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9036         if (err)
9037                 goto out_free;
9038
9039         sched_scan_req->dev = dev;
9040         sched_scan_req->wiphy = &rdev->wiphy;
9041
9042         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9043                 sched_scan_req->owner_nlportid = info->snd_portid;
9044
9045         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9046
9047         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9048         return 0;
9049
9050 out_free:
9051         kfree(sched_scan_req);
9052 out_err:
9053         return err;
9054 }
9055
9056 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9057                                    struct genl_info *info)
9058 {
9059         struct cfg80211_sched_scan_request *req;
9060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9061         u64 cookie;
9062
9063         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9064                 return -EOPNOTSUPP;
9065
9066         if (info->attrs[NL80211_ATTR_COOKIE]) {
9067                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9068                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9069         }
9070
9071         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9072                                      struct cfg80211_sched_scan_request,
9073                                      list);
9074         if (!req || req->reqid ||
9075             (req->owner_nlportid &&
9076              req->owner_nlportid != info->snd_portid))
9077                 return -ENOENT;
9078
9079         return cfg80211_stop_sched_scan_req(rdev, req, false);
9080 }
9081
9082 static int nl80211_start_radar_detection(struct sk_buff *skb,
9083                                          struct genl_info *info)
9084 {
9085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9086         struct net_device *dev = info->user_ptr[1];
9087         struct wireless_dev *wdev = dev->ieee80211_ptr;
9088         struct wiphy *wiphy = wdev->wiphy;
9089         struct cfg80211_chan_def chandef;
9090         enum nl80211_dfs_regions dfs_region;
9091         unsigned int cac_time_ms;
9092         int err;
9093
9094         dfs_region = reg_get_dfs_region(wiphy);
9095         if (dfs_region == NL80211_DFS_UNSET)
9096                 return -EINVAL;
9097
9098         err = nl80211_parse_chandef(rdev, info, &chandef);
9099         if (err)
9100                 return err;
9101
9102         if (netif_carrier_ok(dev))
9103                 return -EBUSY;
9104
9105         if (wdev->cac_started)
9106                 return -EBUSY;
9107
9108         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9109         if (err < 0)
9110                 return err;
9111
9112         if (err == 0)
9113                 return -EINVAL;
9114
9115         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
9116                 return -EINVAL;
9117
9118         /* CAC start is offloaded to HW and can't be started manually */
9119         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
9120                 return -EOPNOTSUPP;
9121
9122         if (!rdev->ops->start_radar_detection)
9123                 return -EOPNOTSUPP;
9124
9125         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9126         if (WARN_ON(!cac_time_ms))
9127                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9128
9129         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9130         if (!err) {
9131                 wdev->chandef = chandef;
9132                 wdev->cac_started = true;
9133                 wdev->cac_start_time = jiffies;
9134                 wdev->cac_time_ms = cac_time_ms;
9135         }
9136         return err;
9137 }
9138
9139 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9140                                           struct genl_info *info)
9141 {
9142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9143         struct net_device *dev = info->user_ptr[1];
9144         struct wireless_dev *wdev = dev->ieee80211_ptr;
9145         struct wiphy *wiphy = wdev->wiphy;
9146         struct cfg80211_chan_def chandef;
9147         enum nl80211_dfs_regions dfs_region;
9148         int err;
9149
9150         dfs_region = reg_get_dfs_region(wiphy);
9151         if (dfs_region == NL80211_DFS_UNSET) {
9152                 GENL_SET_ERR_MSG(info,
9153                                  "DFS Region is not set. Unexpected Radar indication");
9154                 return -EINVAL;
9155         }
9156
9157         err = nl80211_parse_chandef(rdev, info, &chandef);
9158         if (err) {
9159                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9160                 return err;
9161         }
9162
9163         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9164         if (err < 0) {
9165                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9166                 return err;
9167         }
9168
9169         if (err == 0) {
9170                 GENL_SET_ERR_MSG(info,
9171                                  "Unexpected Radar indication for chandef/iftype");
9172                 return -EINVAL;
9173         }
9174
9175         /* Do not process this notification if radar is already detected
9176          * by kernel on this channel, and return success.
9177          */
9178         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9179                 return 0;
9180
9181         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9182
9183         cfg80211_sched_dfs_chan_update(rdev);
9184
9185         rdev->radar_chandef = chandef;
9186
9187         /* Propagate this notification to other radios as well */
9188         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9189
9190         return 0;
9191 }
9192
9193 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9194 {
9195         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9196         struct net_device *dev = info->user_ptr[1];
9197         struct wireless_dev *wdev = dev->ieee80211_ptr;
9198         struct cfg80211_csa_settings params;
9199         struct nlattr **csa_attrs = NULL;
9200         int err;
9201         bool need_new_beacon = false;
9202         bool need_handle_dfs_flag = true;
9203         int len, i;
9204         u32 cs_count;
9205
9206         if (!rdev->ops->channel_switch ||
9207             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9208                 return -EOPNOTSUPP;
9209
9210         switch (dev->ieee80211_ptr->iftype) {
9211         case NL80211_IFTYPE_AP:
9212         case NL80211_IFTYPE_P2P_GO:
9213                 need_new_beacon = true;
9214                 /* For all modes except AP the handle_dfs flag needs to be
9215                  * supplied to tell the kernel that userspace will handle radar
9216                  * events when they happen. Otherwise a switch to a channel
9217                  * requiring DFS will be rejected.
9218                  */
9219                 need_handle_dfs_flag = false;
9220
9221                 /* useless if AP is not running */
9222                 if (!wdev->beacon_interval)
9223                         return -ENOTCONN;
9224                 break;
9225         case NL80211_IFTYPE_ADHOC:
9226                 if (!wdev->ssid_len)
9227                         return -ENOTCONN;
9228                 break;
9229         case NL80211_IFTYPE_MESH_POINT:
9230                 if (!wdev->mesh_id_len)
9231                         return -ENOTCONN;
9232                 break;
9233         default:
9234                 return -EOPNOTSUPP;
9235         }
9236
9237         memset(&params, 0, sizeof(params));
9238         params.beacon_csa.ftm_responder = -1;
9239
9240         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9241             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9242                 return -EINVAL;
9243
9244         /* only important for AP, IBSS and mesh create IEs internally */
9245         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9246                 return -EINVAL;
9247
9248         /* Even though the attribute is u32, the specification says
9249          * u8, so let's make sure we don't overflow.
9250          */
9251         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9252         if (cs_count > 255)
9253                 return -EINVAL;
9254
9255         params.count = cs_count;
9256
9257         if (!need_new_beacon)
9258                 goto skip_beacons;
9259
9260         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9261         if (err)
9262                 return err;
9263
9264         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9265                             GFP_KERNEL);
9266         if (!csa_attrs)
9267                 return -ENOMEM;
9268
9269         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9270                                           info->attrs[NL80211_ATTR_CSA_IES],
9271                                           nl80211_policy, info->extack);
9272         if (err)
9273                 goto free;
9274
9275         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9276         if (err)
9277                 goto free;
9278
9279         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9280                 err = -EINVAL;
9281                 goto free;
9282         }
9283
9284         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9285         if (!len || (len % sizeof(u16))) {
9286                 err = -EINVAL;
9287                 goto free;
9288         }
9289
9290         params.n_counter_offsets_beacon = len / sizeof(u16);
9291         if (rdev->wiphy.max_num_csa_counters &&
9292             (params.n_counter_offsets_beacon >
9293              rdev->wiphy.max_num_csa_counters)) {
9294                 err = -EINVAL;
9295                 goto free;
9296         }
9297
9298         params.counter_offsets_beacon =
9299                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9300
9301         /* sanity checks - counters should fit and be the same */
9302         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9303                 u16 offset = params.counter_offsets_beacon[i];
9304
9305                 if (offset >= params.beacon_csa.tail_len) {
9306                         err = -EINVAL;
9307                         goto free;
9308                 }
9309
9310                 if (params.beacon_csa.tail[offset] != params.count) {
9311                         err = -EINVAL;
9312                         goto free;
9313                 }
9314         }
9315
9316         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9317                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9318                 if (!len || (len % sizeof(u16))) {
9319                         err = -EINVAL;
9320                         goto free;
9321                 }
9322
9323                 params.n_counter_offsets_presp = len / sizeof(u16);
9324                 if (rdev->wiphy.max_num_csa_counters &&
9325                     (params.n_counter_offsets_presp >
9326                      rdev->wiphy.max_num_csa_counters)) {
9327                         err = -EINVAL;
9328                         goto free;
9329                 }
9330
9331                 params.counter_offsets_presp =
9332                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9333
9334                 /* sanity checks - counters should fit and be the same */
9335                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9336                         u16 offset = params.counter_offsets_presp[i];
9337
9338                         if (offset >= params.beacon_csa.probe_resp_len) {
9339                                 err = -EINVAL;
9340                                 goto free;
9341                         }
9342
9343                         if (params.beacon_csa.probe_resp[offset] !=
9344                             params.count) {
9345                                 err = -EINVAL;
9346                                 goto free;
9347                         }
9348                 }
9349         }
9350
9351 skip_beacons:
9352         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9353         if (err)
9354                 goto free;
9355
9356         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9357                                            wdev->iftype)) {
9358                 err = -EINVAL;
9359                 goto free;
9360         }
9361
9362         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9363                                             &params.chandef,
9364                                             wdev->iftype);
9365         if (err < 0)
9366                 goto free;
9367
9368         if (err > 0) {
9369                 params.radar_required = true;
9370                 if (need_handle_dfs_flag &&
9371                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9372                         err = -EINVAL;
9373                         goto free;
9374                 }
9375         }
9376
9377         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9378                 params.block_tx = true;
9379
9380         wdev_lock(wdev);
9381         err = rdev_channel_switch(rdev, dev, &params);
9382         wdev_unlock(wdev);
9383
9384 free:
9385         kfree(csa_attrs);
9386         return err;
9387 }
9388
9389 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9390                             u32 seq, int flags,
9391                             struct cfg80211_registered_device *rdev,
9392                             struct wireless_dev *wdev,
9393                             struct cfg80211_internal_bss *intbss)
9394 {
9395         struct cfg80211_bss *res = &intbss->pub;
9396         const struct cfg80211_bss_ies *ies;
9397         void *hdr;
9398         struct nlattr *bss;
9399
9400         ASSERT_WDEV_LOCK(wdev);
9401
9402         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9403                              NL80211_CMD_NEW_SCAN_RESULTS);
9404         if (!hdr)
9405                 return -1;
9406
9407         genl_dump_check_consistent(cb, hdr);
9408
9409         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9410                 goto nla_put_failure;
9411         if (wdev->netdev &&
9412             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9413                 goto nla_put_failure;
9414         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9415                               NL80211_ATTR_PAD))
9416                 goto nla_put_failure;
9417
9418         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9419         if (!bss)
9420                 goto nla_put_failure;
9421         if ((!is_zero_ether_addr(res->bssid) &&
9422              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9423                 goto nla_put_failure;
9424
9425         rcu_read_lock();
9426         /* indicate whether we have probe response data or not */
9427         if (rcu_access_pointer(res->proberesp_ies) &&
9428             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9429                 goto fail_unlock_rcu;
9430
9431         /* this pointer prefers to be pointed to probe response data
9432          * but is always valid
9433          */
9434         ies = rcu_dereference(res->ies);
9435         if (ies) {
9436                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9437                                       NL80211_BSS_PAD))
9438                         goto fail_unlock_rcu;
9439                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9440                                         ies->len, ies->data))
9441                         goto fail_unlock_rcu;
9442         }
9443
9444         /* and this pointer is always (unless driver didn't know) beacon data */
9445         ies = rcu_dereference(res->beacon_ies);
9446         if (ies && ies->from_beacon) {
9447                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9448                                       NL80211_BSS_PAD))
9449                         goto fail_unlock_rcu;
9450                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9451                                         ies->len, ies->data))
9452                         goto fail_unlock_rcu;
9453         }
9454         rcu_read_unlock();
9455
9456         if (res->beacon_interval &&
9457             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9458                 goto nla_put_failure;
9459         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9460             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9461             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9462                         res->channel->freq_offset) ||
9463             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9464             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9465                         jiffies_to_msecs(jiffies - intbss->ts)))
9466                 goto nla_put_failure;
9467
9468         if (intbss->parent_tsf &&
9469             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9470                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9471              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9472                      intbss->parent_bssid)))
9473                 goto nla_put_failure;
9474
9475         if (intbss->ts_boottime &&
9476             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9477                               intbss->ts_boottime, NL80211_BSS_PAD))
9478                 goto nla_put_failure;
9479
9480         if (!nl80211_put_signal(msg, intbss->pub.chains,
9481                                 intbss->pub.chain_signal,
9482                                 NL80211_BSS_CHAIN_SIGNAL))
9483                 goto nla_put_failure;
9484
9485         switch (rdev->wiphy.signal_type) {
9486         case CFG80211_SIGNAL_TYPE_MBM:
9487                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9488                         goto nla_put_failure;
9489                 break;
9490         case CFG80211_SIGNAL_TYPE_UNSPEC:
9491                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9492                         goto nla_put_failure;
9493                 break;
9494         default:
9495                 break;
9496         }
9497
9498         switch (wdev->iftype) {
9499         case NL80211_IFTYPE_P2P_CLIENT:
9500         case NL80211_IFTYPE_STATION:
9501                 if (intbss == wdev->current_bss &&
9502                     nla_put_u32(msg, NL80211_BSS_STATUS,
9503                                 NL80211_BSS_STATUS_ASSOCIATED))
9504                         goto nla_put_failure;
9505                 break;
9506         case NL80211_IFTYPE_ADHOC:
9507                 if (intbss == wdev->current_bss &&
9508                     nla_put_u32(msg, NL80211_BSS_STATUS,
9509                                 NL80211_BSS_STATUS_IBSS_JOINED))
9510                         goto nla_put_failure;
9511                 break;
9512         default:
9513                 break;
9514         }
9515
9516         nla_nest_end(msg, bss);
9517
9518         genlmsg_end(msg, hdr);
9519         return 0;
9520
9521  fail_unlock_rcu:
9522         rcu_read_unlock();
9523  nla_put_failure:
9524         genlmsg_cancel(msg, hdr);
9525         return -EMSGSIZE;
9526 }
9527
9528 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9529 {
9530         struct cfg80211_registered_device *rdev;
9531         struct cfg80211_internal_bss *scan;
9532         struct wireless_dev *wdev;
9533         int start = cb->args[2], idx = 0;
9534         int err;
9535
9536         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
9537         if (err)
9538                 return err;
9539         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9540         __acquire(&rdev->wiphy.mtx);
9541
9542         wdev_lock(wdev);
9543         spin_lock_bh(&rdev->bss_lock);
9544
9545         /*
9546          * dump_scan will be called multiple times to break up the scan results
9547          * into multiple messages.  It is unlikely that any more bss-es will be
9548          * expired after the first call, so only call only call this on the
9549          * first dump_scan invocation.
9550          */
9551         if (start == 0)
9552                 cfg80211_bss_expire(rdev);
9553
9554         cb->seq = rdev->bss_generation;
9555
9556         list_for_each_entry(scan, &rdev->bss_list, list) {
9557                 if (++idx <= start)
9558                         continue;
9559                 if (nl80211_send_bss(skb, cb,
9560                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9561                                 rdev, wdev, scan) < 0) {
9562                         idx--;
9563                         break;
9564                 }
9565         }
9566
9567         spin_unlock_bh(&rdev->bss_lock);
9568         wdev_unlock(wdev);
9569
9570         cb->args[2] = idx;
9571         wiphy_unlock(&rdev->wiphy);
9572
9573         return skb->len;
9574 }
9575
9576 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9577                                int flags, struct net_device *dev,
9578                                bool allow_radio_stats,
9579                                struct survey_info *survey)
9580 {
9581         void *hdr;
9582         struct nlattr *infoattr;
9583
9584         /* skip radio stats if userspace didn't request them */
9585         if (!survey->channel && !allow_radio_stats)
9586                 return 0;
9587
9588         hdr = nl80211hdr_put(msg, portid, seq, flags,
9589                              NL80211_CMD_NEW_SURVEY_RESULTS);
9590         if (!hdr)
9591                 return -ENOMEM;
9592
9593         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9594                 goto nla_put_failure;
9595
9596         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9597         if (!infoattr)
9598                 goto nla_put_failure;
9599
9600         if (survey->channel &&
9601             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9602                         survey->channel->center_freq))
9603                 goto nla_put_failure;
9604
9605         if (survey->channel && survey->channel->freq_offset &&
9606             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9607                         survey->channel->freq_offset))
9608                 goto nla_put_failure;
9609
9610         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9611             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9612                 goto nla_put_failure;
9613         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9614             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9615                 goto nla_put_failure;
9616         if ((survey->filled & SURVEY_INFO_TIME) &&
9617             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9618                         survey->time, NL80211_SURVEY_INFO_PAD))
9619                 goto nla_put_failure;
9620         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9621             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9622                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9623                 goto nla_put_failure;
9624         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9625             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9626                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9627                 goto nla_put_failure;
9628         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9629             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9630                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9631                 goto nla_put_failure;
9632         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9633             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9634                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9635                 goto nla_put_failure;
9636         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9637             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9638                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9639                 goto nla_put_failure;
9640         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9641             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9642                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9643                 goto nla_put_failure;
9644
9645         nla_nest_end(msg, infoattr);
9646
9647         genlmsg_end(msg, hdr);
9648         return 0;
9649
9650  nla_put_failure:
9651         genlmsg_cancel(msg, hdr);
9652         return -EMSGSIZE;
9653 }
9654
9655 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9656 {
9657         struct nlattr **attrbuf;
9658         struct survey_info survey;
9659         struct cfg80211_registered_device *rdev;
9660         struct wireless_dev *wdev;
9661         int survey_idx = cb->args[2];
9662         int res;
9663         bool radio_stats;
9664
9665         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9666         if (!attrbuf)
9667                 return -ENOMEM;
9668
9669         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
9670         if (res) {
9671                 kfree(attrbuf);
9672                 return res;
9673         }
9674         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9675         __acquire(&rdev->wiphy.mtx);
9676
9677         /* prepare_wdev_dump parsed the attributes */
9678         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9679
9680         if (!wdev->netdev) {
9681                 res = -EINVAL;
9682                 goto out_err;
9683         }
9684
9685         if (!rdev->ops->dump_survey) {
9686                 res = -EOPNOTSUPP;
9687                 goto out_err;
9688         }
9689
9690         while (1) {
9691                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9692                 if (res == -ENOENT)
9693                         break;
9694                 if (res)
9695                         goto out_err;
9696
9697                 /* don't send disabled channels, but do send non-channel data */
9698                 if (survey.channel &&
9699                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9700                         survey_idx++;
9701                         continue;
9702                 }
9703
9704                 if (nl80211_send_survey(skb,
9705                                 NETLINK_CB(cb->skb).portid,
9706                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9707                                 wdev->netdev, radio_stats, &survey) < 0)
9708                         goto out;
9709                 survey_idx++;
9710         }
9711
9712  out:
9713         cb->args[2] = survey_idx;
9714         res = skb->len;
9715  out_err:
9716         kfree(attrbuf);
9717         wiphy_unlock(&rdev->wiphy);
9718         return res;
9719 }
9720
9721 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9722 {
9723         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9724                                   NL80211_WPA_VERSION_2 |
9725                                   NL80211_WPA_VERSION_3));
9726 }
9727
9728 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9729 {
9730         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9731         struct net_device *dev = info->user_ptr[1];
9732         struct ieee80211_channel *chan;
9733         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9734         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9735         enum nl80211_auth_type auth_type;
9736         struct key_parse key;
9737         bool local_state_change;
9738         u32 freq;
9739
9740         if (!info->attrs[NL80211_ATTR_MAC])
9741                 return -EINVAL;
9742
9743         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9744                 return -EINVAL;
9745
9746         if (!info->attrs[NL80211_ATTR_SSID])
9747                 return -EINVAL;
9748
9749         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9750                 return -EINVAL;
9751
9752         err = nl80211_parse_key(info, &key);
9753         if (err)
9754                 return err;
9755
9756         if (key.idx >= 0) {
9757                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9758                         return -EINVAL;
9759                 if (!key.p.key || !key.p.key_len)
9760                         return -EINVAL;
9761                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9762                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9763                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9764                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9765                         return -EINVAL;
9766                 if (key.idx > 3)
9767                         return -EINVAL;
9768         } else {
9769                 key.p.key_len = 0;
9770                 key.p.key = NULL;
9771         }
9772
9773         if (key.idx >= 0) {
9774                 int i;
9775                 bool ok = false;
9776
9777                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9778                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9779                                 ok = true;
9780                                 break;
9781                         }
9782                 }
9783                 if (!ok)
9784                         return -EINVAL;
9785         }
9786
9787         if (!rdev->ops->auth)
9788                 return -EOPNOTSUPP;
9789
9790         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9791             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9792                 return -EOPNOTSUPP;
9793
9794         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9795         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9796         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9797                 freq +=
9798                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9799
9800         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9801         if (!chan)
9802                 return -EINVAL;
9803
9804         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9805         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9806
9807         if (info->attrs[NL80211_ATTR_IE]) {
9808                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9809                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9810         }
9811
9812         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9813         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9814                 return -EINVAL;
9815
9816         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9817              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9818              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9819              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9820             !info->attrs[NL80211_ATTR_AUTH_DATA])
9821                 return -EINVAL;
9822
9823         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9824                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9825                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9826                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9827                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9828                         return -EINVAL;
9829                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9830                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9831         }
9832
9833         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9834
9835         /*
9836          * Since we no longer track auth state, ignore
9837          * requests to only change local state.
9838          */
9839         if (local_state_change)
9840                 return 0;
9841
9842         wdev_lock(dev->ieee80211_ptr);
9843         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9844                                  ssid, ssid_len, ie, ie_len,
9845                                  key.p.key, key.p.key_len, key.idx,
9846                                  auth_data, auth_data_len);
9847         wdev_unlock(dev->ieee80211_ptr);
9848         return err;
9849 }
9850
9851 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9852                                      struct genl_info *info)
9853 {
9854         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9855                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9856                 return -EINVAL;
9857         }
9858
9859         if (!rdev->ops->tx_control_port ||
9860             !wiphy_ext_feature_isset(&rdev->wiphy,
9861                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9862                 return -EOPNOTSUPP;
9863
9864         return 0;
9865 }
9866
9867 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9868                                    struct genl_info *info,
9869                                    struct cfg80211_crypto_settings *settings,
9870                                    int cipher_limit)
9871 {
9872         memset(settings, 0, sizeof(*settings));
9873
9874         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9875
9876         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9877                 u16 proto;
9878
9879                 proto = nla_get_u16(
9880                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9881                 settings->control_port_ethertype = cpu_to_be16(proto);
9882                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9883                     proto != ETH_P_PAE)
9884                         return -EINVAL;
9885                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9886                         settings->control_port_no_encrypt = true;
9887         } else
9888                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9889
9890         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9891                 int r = validate_pae_over_nl80211(rdev, info);
9892
9893                 if (r < 0)
9894                         return r;
9895
9896                 settings->control_port_over_nl80211 = true;
9897
9898                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9899                         settings->control_port_no_preauth = true;
9900         }
9901
9902         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9903                 void *data;
9904                 int len, i;
9905
9906                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9907                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9908                 settings->n_ciphers_pairwise = len / sizeof(u32);
9909
9910                 if (len % sizeof(u32))
9911                         return -EINVAL;
9912
9913                 if (settings->n_ciphers_pairwise > cipher_limit)
9914                         return -EINVAL;
9915
9916                 memcpy(settings->ciphers_pairwise, data, len);
9917
9918                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9919                         if (!cfg80211_supported_cipher_suite(
9920                                         &rdev->wiphy,
9921                                         settings->ciphers_pairwise[i]))
9922                                 return -EINVAL;
9923         }
9924
9925         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9926                 settings->cipher_group =
9927                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9928                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9929                                                      settings->cipher_group))
9930                         return -EINVAL;
9931         }
9932
9933         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9934                 settings->wpa_versions =
9935                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9936                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9937                         return -EINVAL;
9938         }
9939
9940         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9941                 void *data;
9942                 int len;
9943
9944                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9945                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9946                 settings->n_akm_suites = len / sizeof(u32);
9947
9948                 if (len % sizeof(u32))
9949                         return -EINVAL;
9950
9951                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9952                         return -EINVAL;
9953
9954                 memcpy(settings->akm_suites, data, len);
9955         }
9956
9957         if (info->attrs[NL80211_ATTR_PMK]) {
9958                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9959                         return -EINVAL;
9960                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9961                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9962                     !wiphy_ext_feature_isset(&rdev->wiphy,
9963                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9964                         return -EINVAL;
9965                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9966         }
9967
9968         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9969                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9970                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9971                     !wiphy_ext_feature_isset(&rdev->wiphy,
9972                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9973                         return -EINVAL;
9974                 settings->sae_pwd =
9975                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9976                 settings->sae_pwd_len =
9977                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9978         }
9979
9980         if (info->attrs[NL80211_ATTR_SAE_PWE])
9981                 settings->sae_pwe =
9982                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9983         else
9984                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9985
9986         return 0;
9987 }
9988
9989 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9990 {
9991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9992         struct net_device *dev = info->user_ptr[1];
9993         struct ieee80211_channel *chan;
9994         struct cfg80211_assoc_request req = {};
9995         const u8 *bssid, *ssid;
9996         int err, ssid_len = 0;
9997         u32 freq;
9998
9999         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10000             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10001                 return -EPERM;
10002
10003         if (!info->attrs[NL80211_ATTR_MAC] ||
10004             !info->attrs[NL80211_ATTR_SSID] ||
10005             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
10006                 return -EINVAL;
10007
10008         if (!rdev->ops->assoc)
10009                 return -EOPNOTSUPP;
10010
10011         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10012             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10013                 return -EOPNOTSUPP;
10014
10015         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10016
10017         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10018         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10019                 freq +=
10020                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10021         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10022         if (!chan)
10023                 return -EINVAL;
10024
10025         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10026         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10027
10028         if (info->attrs[NL80211_ATTR_IE]) {
10029                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10030                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10031         }
10032
10033         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10034                 enum nl80211_mfp mfp =
10035                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10036                 if (mfp == NL80211_MFP_REQUIRED)
10037                         req.use_mfp = true;
10038                 else if (mfp != NL80211_MFP_NO)
10039                         return -EINVAL;
10040         }
10041
10042         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10043                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10044
10045         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10046                 req.flags |= ASSOC_REQ_DISABLE_HT;
10047
10048         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10049                 memcpy(&req.ht_capa_mask,
10050                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10051                        sizeof(req.ht_capa_mask));
10052
10053         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10054                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10055                         return -EINVAL;
10056                 memcpy(&req.ht_capa,
10057                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10058                        sizeof(req.ht_capa));
10059         }
10060
10061         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10062                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10063
10064         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10065                 req.flags |= ASSOC_REQ_DISABLE_HE;
10066
10067         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10068                 memcpy(&req.vht_capa_mask,
10069                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10070                        sizeof(req.vht_capa_mask));
10071
10072         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10073                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10074                         return -EINVAL;
10075                 memcpy(&req.vht_capa,
10076                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10077                        sizeof(req.vht_capa));
10078         }
10079
10080         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10081                 if (!((rdev->wiphy.features &
10082                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10083                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10084                     !wiphy_ext_feature_isset(&rdev->wiphy,
10085                                              NL80211_EXT_FEATURE_RRM))
10086                         return -EINVAL;
10087                 req.flags |= ASSOC_REQ_USE_RRM;
10088         }
10089
10090         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10091                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10092                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10093                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10094                         return -EINVAL;
10095                 req.fils_nonces =
10096                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10097         }
10098
10099         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10100                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10101                         return -EINVAL;
10102                 memcpy(&req.s1g_capa_mask,
10103                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10104                        sizeof(req.s1g_capa_mask));
10105         }
10106
10107         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10108                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10109                         return -EINVAL;
10110                 memcpy(&req.s1g_capa,
10111                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10112                        sizeof(req.s1g_capa));
10113         }
10114
10115         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10116         if (!err) {
10117                 wdev_lock(dev->ieee80211_ptr);
10118
10119                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
10120                                           ssid, ssid_len, &req);
10121
10122                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10123                         dev->ieee80211_ptr->conn_owner_nlportid =
10124                                 info->snd_portid;
10125                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10126                                bssid, ETH_ALEN);
10127                 }
10128
10129                 wdev_unlock(dev->ieee80211_ptr);
10130         }
10131
10132         return err;
10133 }
10134
10135 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10136 {
10137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10138         struct net_device *dev = info->user_ptr[1];
10139         const u8 *ie = NULL, *bssid;
10140         int ie_len = 0, err;
10141         u16 reason_code;
10142         bool local_state_change;
10143
10144         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10145             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10146                 return -EPERM;
10147
10148         if (!info->attrs[NL80211_ATTR_MAC])
10149                 return -EINVAL;
10150
10151         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10152                 return -EINVAL;
10153
10154         if (!rdev->ops->deauth)
10155                 return -EOPNOTSUPP;
10156
10157         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10158             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10159                 return -EOPNOTSUPP;
10160
10161         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10162
10163         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10164         if (reason_code == 0) {
10165                 /* Reason Code 0 is reserved */
10166                 return -EINVAL;
10167         }
10168
10169         if (info->attrs[NL80211_ATTR_IE]) {
10170                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10171                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10172         }
10173
10174         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10175
10176         wdev_lock(dev->ieee80211_ptr);
10177         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10178                                    local_state_change);
10179         wdev_unlock(dev->ieee80211_ptr);
10180         return err;
10181 }
10182
10183 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10184 {
10185         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10186         struct net_device *dev = info->user_ptr[1];
10187         const u8 *ie = NULL, *bssid;
10188         int ie_len = 0, err;
10189         u16 reason_code;
10190         bool local_state_change;
10191
10192         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10193             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10194                 return -EPERM;
10195
10196         if (!info->attrs[NL80211_ATTR_MAC])
10197                 return -EINVAL;
10198
10199         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10200                 return -EINVAL;
10201
10202         if (!rdev->ops->disassoc)
10203                 return -EOPNOTSUPP;
10204
10205         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10206             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10207                 return -EOPNOTSUPP;
10208
10209         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10210
10211         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10212         if (reason_code == 0) {
10213                 /* Reason Code 0 is reserved */
10214                 return -EINVAL;
10215         }
10216
10217         if (info->attrs[NL80211_ATTR_IE]) {
10218                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10219                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10220         }
10221
10222         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10223
10224         wdev_lock(dev->ieee80211_ptr);
10225         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10226                                      local_state_change);
10227         wdev_unlock(dev->ieee80211_ptr);
10228         return err;
10229 }
10230
10231 static bool
10232 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10233                          int mcast_rate[NUM_NL80211_BANDS],
10234                          int rateval)
10235 {
10236         struct wiphy *wiphy = &rdev->wiphy;
10237         bool found = false;
10238         int band, i;
10239
10240         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10241                 struct ieee80211_supported_band *sband;
10242
10243                 sband = wiphy->bands[band];
10244                 if (!sband)
10245                         continue;
10246
10247                 for (i = 0; i < sband->n_bitrates; i++) {
10248                         if (sband->bitrates[i].bitrate == rateval) {
10249                                 mcast_rate[band] = i + 1;
10250                                 found = true;
10251                                 break;
10252                         }
10253                 }
10254         }
10255
10256         return found;
10257 }
10258
10259 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10260 {
10261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10262         struct net_device *dev = info->user_ptr[1];
10263         struct cfg80211_ibss_params ibss;
10264         struct wiphy *wiphy;
10265         struct cfg80211_cached_keys *connkeys = NULL;
10266         int err;
10267
10268         memset(&ibss, 0, sizeof(ibss));
10269
10270         if (!info->attrs[NL80211_ATTR_SSID] ||
10271             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10272                 return -EINVAL;
10273
10274         ibss.beacon_interval = 100;
10275
10276         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10277                 ibss.beacon_interval =
10278                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10279
10280         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10281                                            ibss.beacon_interval);
10282         if (err)
10283                 return err;
10284
10285         if (!rdev->ops->join_ibss)
10286                 return -EOPNOTSUPP;
10287
10288         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10289                 return -EOPNOTSUPP;
10290
10291         wiphy = &rdev->wiphy;
10292
10293         if (info->attrs[NL80211_ATTR_MAC]) {
10294                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10295
10296                 if (!is_valid_ether_addr(ibss.bssid))
10297                         return -EINVAL;
10298         }
10299         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10300         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10301
10302         if (info->attrs[NL80211_ATTR_IE]) {
10303                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10304                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10305         }
10306
10307         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10308         if (err)
10309                 return err;
10310
10311         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10312                                      NL80211_IFTYPE_ADHOC))
10313                 return -EINVAL;
10314
10315         switch (ibss.chandef.width) {
10316         case NL80211_CHAN_WIDTH_5:
10317         case NL80211_CHAN_WIDTH_10:
10318         case NL80211_CHAN_WIDTH_20_NOHT:
10319                 break;
10320         case NL80211_CHAN_WIDTH_20:
10321         case NL80211_CHAN_WIDTH_40:
10322                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10323                         return -EINVAL;
10324                 break;
10325         case NL80211_CHAN_WIDTH_80:
10326         case NL80211_CHAN_WIDTH_80P80:
10327         case NL80211_CHAN_WIDTH_160:
10328                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10329                         return -EINVAL;
10330                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10331                                              NL80211_EXT_FEATURE_VHT_IBSS))
10332                         return -EINVAL;
10333                 break;
10334         default:
10335                 return -EINVAL;
10336         }
10337
10338         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10339         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10340
10341         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10342                 u8 *rates =
10343                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10344                 int n_rates =
10345                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10346                 struct ieee80211_supported_band *sband =
10347                         wiphy->bands[ibss.chandef.chan->band];
10348
10349                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10350                                              &ibss.basic_rates);
10351                 if (err)
10352                         return err;
10353         }
10354
10355         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10356                 memcpy(&ibss.ht_capa_mask,
10357                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10358                        sizeof(ibss.ht_capa_mask));
10359
10360         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10361                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10362                         return -EINVAL;
10363                 memcpy(&ibss.ht_capa,
10364                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10365                        sizeof(ibss.ht_capa));
10366         }
10367
10368         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10369             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10370                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10371                 return -EINVAL;
10372
10373         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10374                 bool no_ht = false;
10375
10376                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10377                 if (IS_ERR(connkeys))
10378                         return PTR_ERR(connkeys);
10379
10380                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10381                     no_ht) {
10382                         kfree_sensitive(connkeys);
10383                         return -EINVAL;
10384                 }
10385         }
10386
10387         ibss.control_port =
10388                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10389
10390         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10391                 int r = validate_pae_over_nl80211(rdev, info);
10392
10393                 if (r < 0) {
10394                         kfree_sensitive(connkeys);
10395                         return r;
10396                 }
10397
10398                 ibss.control_port_over_nl80211 = true;
10399         }
10400
10401         ibss.userspace_handles_dfs =
10402                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10403
10404         wdev_lock(dev->ieee80211_ptr);
10405         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10406         if (err)
10407                 kfree_sensitive(connkeys);
10408         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10409                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10410         wdev_unlock(dev->ieee80211_ptr);
10411
10412         return err;
10413 }
10414
10415 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10416 {
10417         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10418         struct net_device *dev = info->user_ptr[1];
10419
10420         if (!rdev->ops->leave_ibss)
10421                 return -EOPNOTSUPP;
10422
10423         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10424                 return -EOPNOTSUPP;
10425
10426         return cfg80211_leave_ibss(rdev, dev, false);
10427 }
10428
10429 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10430 {
10431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10432         struct net_device *dev = info->user_ptr[1];
10433         int mcast_rate[NUM_NL80211_BANDS];
10434         u32 nla_rate;
10435         int err;
10436
10437         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10438             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10439             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10440                 return -EOPNOTSUPP;
10441
10442         if (!rdev->ops->set_mcast_rate)
10443                 return -EOPNOTSUPP;
10444
10445         memset(mcast_rate, 0, sizeof(mcast_rate));
10446
10447         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10448                 return -EINVAL;
10449
10450         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10451         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10452                 return -EINVAL;
10453
10454         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10455
10456         return err;
10457 }
10458
10459 static struct sk_buff *
10460 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10461                             struct wireless_dev *wdev, int approxlen,
10462                             u32 portid, u32 seq, enum nl80211_commands cmd,
10463                             enum nl80211_attrs attr,
10464                             const struct nl80211_vendor_cmd_info *info,
10465                             gfp_t gfp)
10466 {
10467         struct sk_buff *skb;
10468         void *hdr;
10469         struct nlattr *data;
10470
10471         skb = nlmsg_new(approxlen + 100, gfp);
10472         if (!skb)
10473                 return NULL;
10474
10475         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10476         if (!hdr) {
10477                 kfree_skb(skb);
10478                 return NULL;
10479         }
10480
10481         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10482                 goto nla_put_failure;
10483
10484         if (info) {
10485                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10486                                 info->vendor_id))
10487                         goto nla_put_failure;
10488                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10489                                 info->subcmd))
10490                         goto nla_put_failure;
10491         }
10492
10493         if (wdev) {
10494                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10495                                       wdev_id(wdev), NL80211_ATTR_PAD))
10496                         goto nla_put_failure;
10497                 if (wdev->netdev &&
10498                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10499                                 wdev->netdev->ifindex))
10500                         goto nla_put_failure;
10501         }
10502
10503         data = nla_nest_start_noflag(skb, attr);
10504         if (!data)
10505                 goto nla_put_failure;
10506
10507         ((void **)skb->cb)[0] = rdev;
10508         ((void **)skb->cb)[1] = hdr;
10509         ((void **)skb->cb)[2] = data;
10510
10511         return skb;
10512
10513  nla_put_failure:
10514         kfree_skb(skb);
10515         return NULL;
10516 }
10517
10518 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10519                                            struct wireless_dev *wdev,
10520                                            enum nl80211_commands cmd,
10521                                            enum nl80211_attrs attr,
10522                                            unsigned int portid,
10523                                            int vendor_event_idx,
10524                                            int approxlen, gfp_t gfp)
10525 {
10526         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10527         const struct nl80211_vendor_cmd_info *info;
10528
10529         switch (cmd) {
10530         case NL80211_CMD_TESTMODE:
10531                 if (WARN_ON(vendor_event_idx != -1))
10532                         return NULL;
10533                 info = NULL;
10534                 break;
10535         case NL80211_CMD_VENDOR:
10536                 if (WARN_ON(vendor_event_idx < 0 ||
10537                             vendor_event_idx >= wiphy->n_vendor_events))
10538                         return NULL;
10539                 info = &wiphy->vendor_events[vendor_event_idx];
10540                 break;
10541         default:
10542                 WARN_ON(1);
10543                 return NULL;
10544         }
10545
10546         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10547                                            cmd, attr, info, gfp);
10548 }
10549 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10550
10551 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10552 {
10553         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10554         void *hdr = ((void **)skb->cb)[1];
10555         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10556         struct nlattr *data = ((void **)skb->cb)[2];
10557         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10558
10559         /* clear CB data for netlink core to own from now on */
10560         memset(skb->cb, 0, sizeof(skb->cb));
10561
10562         nla_nest_end(skb, data);
10563         genlmsg_end(skb, hdr);
10564
10565         if (nlhdr->nlmsg_pid) {
10566                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10567                                 nlhdr->nlmsg_pid);
10568         } else {
10569                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10570                         mcgrp = NL80211_MCGRP_VENDOR;
10571
10572                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10573                                         skb, 0, mcgrp, gfp);
10574         }
10575 }
10576 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10577
10578 #ifdef CONFIG_NL80211_TESTMODE
10579 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10580 {
10581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10582         struct wireless_dev *wdev;
10583         int err;
10584
10585         lockdep_assert_held(&rdev->wiphy.mtx);
10586
10587         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
10588                                           info->attrs);
10589
10590         if (!rdev->ops->testmode_cmd)
10591                 return -EOPNOTSUPP;
10592
10593         if (IS_ERR(wdev)) {
10594                 err = PTR_ERR(wdev);
10595                 if (err != -EINVAL)
10596                         return err;
10597                 wdev = NULL;
10598         } else if (wdev->wiphy != &rdev->wiphy) {
10599                 return -EINVAL;
10600         }
10601
10602         if (!info->attrs[NL80211_ATTR_TESTDATA])
10603                 return -EINVAL;
10604
10605         rdev->cur_cmd_info = info;
10606         err = rdev_testmode_cmd(rdev, wdev,
10607                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10608                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10609         rdev->cur_cmd_info = NULL;
10610
10611         return err;
10612 }
10613
10614 static int nl80211_testmode_dump(struct sk_buff *skb,
10615                                  struct netlink_callback *cb)
10616 {
10617         struct cfg80211_registered_device *rdev;
10618         struct nlattr **attrbuf = NULL;
10619         int err;
10620         long phy_idx;
10621         void *data = NULL;
10622         int data_len = 0;
10623
10624         rtnl_lock();
10625
10626         if (cb->args[0]) {
10627                 /*
10628                  * 0 is a valid index, but not valid for args[0],
10629                  * so we need to offset by 1.
10630                  */
10631                 phy_idx = cb->args[0] - 1;
10632
10633                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10634                 if (!rdev) {
10635                         err = -ENOENT;
10636                         goto out_err;
10637                 }
10638         } else {
10639                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10640                                   GFP_KERNEL);
10641                 if (!attrbuf) {
10642                         err = -ENOMEM;
10643                         goto out_err;
10644                 }
10645
10646                 err = nlmsg_parse_deprecated(cb->nlh,
10647                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10648                                              attrbuf, nl80211_fam.maxattr,
10649                                              nl80211_policy, NULL);
10650                 if (err)
10651                         goto out_err;
10652
10653                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10654                 if (IS_ERR(rdev)) {
10655                         err = PTR_ERR(rdev);
10656                         goto out_err;
10657                 }
10658                 phy_idx = rdev->wiphy_idx;
10659
10660                 if (attrbuf[NL80211_ATTR_TESTDATA])
10661                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10662         }
10663
10664         if (cb->args[1]) {
10665                 data = nla_data((void *)cb->args[1]);
10666                 data_len = nla_len((void *)cb->args[1]);
10667         }
10668
10669         if (!rdev->ops->testmode_dump) {
10670                 err = -EOPNOTSUPP;
10671                 goto out_err;
10672         }
10673
10674         while (1) {
10675                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10676                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10677                                            NL80211_CMD_TESTMODE);
10678                 struct nlattr *tmdata;
10679
10680                 if (!hdr)
10681                         break;
10682
10683                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10684                         genlmsg_cancel(skb, hdr);
10685                         break;
10686                 }
10687
10688                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10689                 if (!tmdata) {
10690                         genlmsg_cancel(skb, hdr);
10691                         break;
10692                 }
10693                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10694                 nla_nest_end(skb, tmdata);
10695
10696                 if (err == -ENOBUFS || err == -ENOENT) {
10697                         genlmsg_cancel(skb, hdr);
10698                         break;
10699                 } else if (err) {
10700                         genlmsg_cancel(skb, hdr);
10701                         goto out_err;
10702                 }
10703
10704                 genlmsg_end(skb, hdr);
10705         }
10706
10707         err = skb->len;
10708         /* see above */
10709         cb->args[0] = phy_idx + 1;
10710  out_err:
10711         kfree(attrbuf);
10712         rtnl_unlock();
10713         return err;
10714 }
10715 #endif
10716
10717 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10718 {
10719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10720         struct net_device *dev = info->user_ptr[1];
10721         struct cfg80211_connect_params connect;
10722         struct wiphy *wiphy;
10723         struct cfg80211_cached_keys *connkeys = NULL;
10724         u32 freq = 0;
10725         int err;
10726
10727         memset(&connect, 0, sizeof(connect));
10728
10729         if (!info->attrs[NL80211_ATTR_SSID] ||
10730             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10731                 return -EINVAL;
10732
10733         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10734                 connect.auth_type =
10735                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10736                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10737                                              NL80211_CMD_CONNECT))
10738                         return -EINVAL;
10739         } else
10740                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10741
10742         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10743
10744         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10745             !wiphy_ext_feature_isset(&rdev->wiphy,
10746                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10747                 return -EINVAL;
10748         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10749
10750         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10751                                       NL80211_MAX_NR_CIPHER_SUITES);
10752         if (err)
10753                 return err;
10754
10755         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10756             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10757                 return -EOPNOTSUPP;
10758
10759         wiphy = &rdev->wiphy;
10760
10761         connect.bg_scan_period = -1;
10762         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10763                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10764                 connect.bg_scan_period =
10765                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10766         }
10767
10768         if (info->attrs[NL80211_ATTR_MAC])
10769                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10770         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10771                 connect.bssid_hint =
10772                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10773         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10774         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10775
10776         if (info->attrs[NL80211_ATTR_IE]) {
10777                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10778                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10779         }
10780
10781         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10782                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10783                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10784                     !wiphy_ext_feature_isset(&rdev->wiphy,
10785                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10786                         return -EOPNOTSUPP;
10787         } else {
10788                 connect.mfp = NL80211_MFP_NO;
10789         }
10790
10791         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10792                 connect.prev_bssid =
10793                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10794
10795         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10796                 freq = MHZ_TO_KHZ(nla_get_u32(
10797                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10798         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10799                 freq +=
10800                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10801
10802         if (freq) {
10803                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10804                 if (!connect.channel)
10805                         return -EINVAL;
10806         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10807                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10808                 freq = MHZ_TO_KHZ(freq);
10809                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10810                 if (!connect.channel_hint)
10811                         return -EINVAL;
10812         }
10813
10814         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10815                 connect.edmg.channels =
10816                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10817
10818                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10819                         connect.edmg.bw_config =
10820                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10821         }
10822
10823         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10824                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10825                 if (IS_ERR(connkeys))
10826                         return PTR_ERR(connkeys);
10827         }
10828
10829         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10830                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10831
10832         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10833                 memcpy(&connect.ht_capa_mask,
10834                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10835                        sizeof(connect.ht_capa_mask));
10836
10837         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10838                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10839                         kfree_sensitive(connkeys);
10840                         return -EINVAL;
10841                 }
10842                 memcpy(&connect.ht_capa,
10843                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10844                        sizeof(connect.ht_capa));
10845         }
10846
10847         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10848                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10849
10850         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10851                 connect.flags |= ASSOC_REQ_DISABLE_HE;
10852
10853         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10854                 memcpy(&connect.vht_capa_mask,
10855                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10856                        sizeof(connect.vht_capa_mask));
10857
10858         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10859                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10860                         kfree_sensitive(connkeys);
10861                         return -EINVAL;
10862                 }
10863                 memcpy(&connect.vht_capa,
10864                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10865                        sizeof(connect.vht_capa));
10866         }
10867
10868         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10869                 if (!((rdev->wiphy.features &
10870                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10871                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10872                     !wiphy_ext_feature_isset(&rdev->wiphy,
10873                                              NL80211_EXT_FEATURE_RRM)) {
10874                         kfree_sensitive(connkeys);
10875                         return -EINVAL;
10876                 }
10877                 connect.flags |= ASSOC_REQ_USE_RRM;
10878         }
10879
10880         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10881         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10882                 kfree_sensitive(connkeys);
10883                 return -EOPNOTSUPP;
10884         }
10885
10886         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10887                 /* bss selection makes no sense if bssid is set */
10888                 if (connect.bssid) {
10889                         kfree_sensitive(connkeys);
10890                         return -EINVAL;
10891                 }
10892
10893                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10894                                        wiphy, &connect.bss_select);
10895                 if (err) {
10896                         kfree_sensitive(connkeys);
10897                         return err;
10898                 }
10899         }
10900
10901         if (wiphy_ext_feature_isset(&rdev->wiphy,
10902                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10903             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10904             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10905             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10906             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10907                 connect.fils_erp_username =
10908                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10909                 connect.fils_erp_username_len =
10910                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10911                 connect.fils_erp_realm =
10912                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10913                 connect.fils_erp_realm_len =
10914                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10915                 connect.fils_erp_next_seq_num =
10916                         nla_get_u16(
10917                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10918                 connect.fils_erp_rrk =
10919                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10920                 connect.fils_erp_rrk_len =
10921                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10922         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10923                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10924                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10925                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10926                 kfree_sensitive(connkeys);
10927                 return -EINVAL;
10928         }
10929
10930         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10931                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10932                         kfree_sensitive(connkeys);
10933                         GENL_SET_ERR_MSG(info,
10934                                          "external auth requires connection ownership");
10935                         return -EINVAL;
10936                 }
10937                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10938         }
10939
10940         wdev_lock(dev->ieee80211_ptr);
10941
10942         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10943                                connect.prev_bssid);
10944         if (err)
10945                 kfree_sensitive(connkeys);
10946
10947         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10948                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10949                 if (connect.bssid)
10950                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10951                                connect.bssid, ETH_ALEN);
10952                 else
10953                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10954         }
10955
10956         wdev_unlock(dev->ieee80211_ptr);
10957
10958         return err;
10959 }
10960
10961 static int nl80211_update_connect_params(struct sk_buff *skb,
10962                                          struct genl_info *info)
10963 {
10964         struct cfg80211_connect_params connect = {};
10965         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10966         struct net_device *dev = info->user_ptr[1];
10967         struct wireless_dev *wdev = dev->ieee80211_ptr;
10968         bool fils_sk_offload;
10969         u32 auth_type;
10970         u32 changed = 0;
10971         int ret;
10972
10973         if (!rdev->ops->update_connect_params)
10974                 return -EOPNOTSUPP;
10975
10976         if (info->attrs[NL80211_ATTR_IE]) {
10977                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10978                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10979                 changed |= UPDATE_ASSOC_IES;
10980         }
10981
10982         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10983                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10984
10985         /*
10986          * when driver supports fils-sk offload all attributes must be
10987          * provided. So the else covers "fils-sk-not-all" and
10988          * "no-fils-sk-any".
10989          */
10990         if (fils_sk_offload &&
10991             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10992             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10993             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10994             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10995                 connect.fils_erp_username =
10996                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10997                 connect.fils_erp_username_len =
10998                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10999                 connect.fils_erp_realm =
11000                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11001                 connect.fils_erp_realm_len =
11002                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11003                 connect.fils_erp_next_seq_num =
11004                         nla_get_u16(
11005                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11006                 connect.fils_erp_rrk =
11007                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11008                 connect.fils_erp_rrk_len =
11009                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11010                 changed |= UPDATE_FILS_ERP_INFO;
11011         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11012                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11013                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11014                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11015                 return -EINVAL;
11016         }
11017
11018         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11019                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11020                 if (!nl80211_valid_auth_type(rdev, auth_type,
11021                                              NL80211_CMD_CONNECT))
11022                         return -EINVAL;
11023
11024                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11025                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11026                         return -EINVAL;
11027
11028                 connect.auth_type = auth_type;
11029                 changed |= UPDATE_AUTH_TYPE;
11030         }
11031
11032         wdev_lock(dev->ieee80211_ptr);
11033         if (!wdev->current_bss)
11034                 ret = -ENOLINK;
11035         else
11036                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11037         wdev_unlock(dev->ieee80211_ptr);
11038
11039         return ret;
11040 }
11041
11042 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11043 {
11044         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11045         struct net_device *dev = info->user_ptr[1];
11046         u16 reason;
11047         int ret;
11048
11049         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11050             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11051                 return -EPERM;
11052
11053         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11054                 reason = WLAN_REASON_DEAUTH_LEAVING;
11055         else
11056                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11057
11058         if (reason == 0)
11059                 return -EINVAL;
11060
11061         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11062             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11063                 return -EOPNOTSUPP;
11064
11065         wdev_lock(dev->ieee80211_ptr);
11066         ret = cfg80211_disconnect(rdev, dev, reason, true);
11067         wdev_unlock(dev->ieee80211_ptr);
11068         return ret;
11069 }
11070
11071 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11072 {
11073         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11074         struct net *net;
11075         int err;
11076
11077         if (info->attrs[NL80211_ATTR_PID]) {
11078                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11079
11080                 net = get_net_ns_by_pid(pid);
11081         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11082                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11083
11084                 net = get_net_ns_by_fd(fd);
11085         } else {
11086                 return -EINVAL;
11087         }
11088
11089         if (IS_ERR(net))
11090                 return PTR_ERR(net);
11091
11092         err = 0;
11093
11094         /* check if anything to do */
11095         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11096                 err = cfg80211_switch_netns(rdev, net);
11097
11098         put_net(net);
11099         return err;
11100 }
11101
11102 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11103 {
11104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11105         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11106                         struct cfg80211_pmksa *pmksa) = NULL;
11107         struct net_device *dev = info->user_ptr[1];
11108         struct cfg80211_pmksa pmksa;
11109
11110         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11111
11112         if (!info->attrs[NL80211_ATTR_PMKID])
11113                 return -EINVAL;
11114
11115         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11116
11117         if (info->attrs[NL80211_ATTR_MAC]) {
11118                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11119         } else if (info->attrs[NL80211_ATTR_SSID] &&
11120                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11121                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11122                     info->attrs[NL80211_ATTR_PMK])) {
11123                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11124                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11125                 pmksa.cache_id =
11126                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11127         } else {
11128                 return -EINVAL;
11129         }
11130         if (info->attrs[NL80211_ATTR_PMK]) {
11131                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11132                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11133         }
11134
11135         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11136                 pmksa.pmk_lifetime =
11137                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11138
11139         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11140                 pmksa.pmk_reauth_threshold =
11141                         nla_get_u8(
11142                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11143
11144         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11145             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11146             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11147               wiphy_ext_feature_isset(&rdev->wiphy,
11148                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11149                 return -EOPNOTSUPP;
11150
11151         switch (info->genlhdr->cmd) {
11152         case NL80211_CMD_SET_PMKSA:
11153                 rdev_ops = rdev->ops->set_pmksa;
11154                 break;
11155         case NL80211_CMD_DEL_PMKSA:
11156                 rdev_ops = rdev->ops->del_pmksa;
11157                 break;
11158         default:
11159                 WARN_ON(1);
11160                 break;
11161         }
11162
11163         if (!rdev_ops)
11164                 return -EOPNOTSUPP;
11165
11166         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11167 }
11168
11169 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11170 {
11171         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11172         struct net_device *dev = info->user_ptr[1];
11173
11174         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11175             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11176                 return -EOPNOTSUPP;
11177
11178         if (!rdev->ops->flush_pmksa)
11179                 return -EOPNOTSUPP;
11180
11181         return rdev_flush_pmksa(rdev, dev);
11182 }
11183
11184 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11185 {
11186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11187         struct net_device *dev = info->user_ptr[1];
11188         u8 action_code, dialog_token;
11189         u32 peer_capability = 0;
11190         u16 status_code;
11191         u8 *peer;
11192         bool initiator;
11193
11194         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11195             !rdev->ops->tdls_mgmt)
11196                 return -EOPNOTSUPP;
11197
11198         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11199             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11200             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11201             !info->attrs[NL80211_ATTR_IE] ||
11202             !info->attrs[NL80211_ATTR_MAC])
11203                 return -EINVAL;
11204
11205         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11206         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11207         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11208         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11209         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11210         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11211                 peer_capability =
11212                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11213
11214         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11215                               dialog_token, status_code, peer_capability,
11216                               initiator,
11217                               nla_data(info->attrs[NL80211_ATTR_IE]),
11218                               nla_len(info->attrs[NL80211_ATTR_IE]));
11219 }
11220
11221 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11222 {
11223         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11224         struct net_device *dev = info->user_ptr[1];
11225         enum nl80211_tdls_operation operation;
11226         u8 *peer;
11227
11228         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11229             !rdev->ops->tdls_oper)
11230                 return -EOPNOTSUPP;
11231
11232         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11233             !info->attrs[NL80211_ATTR_MAC])
11234                 return -EINVAL;
11235
11236         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11237         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11238
11239         return rdev_tdls_oper(rdev, dev, peer, operation);
11240 }
11241
11242 static int nl80211_remain_on_channel(struct sk_buff *skb,
11243                                      struct genl_info *info)
11244 {
11245         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11246         struct wireless_dev *wdev = info->user_ptr[1];
11247         struct cfg80211_chan_def chandef;
11248         const struct cfg80211_chan_def *compat_chandef;
11249         struct sk_buff *msg;
11250         void *hdr;
11251         u64 cookie;
11252         u32 duration;
11253         int err;
11254
11255         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11256             !info->attrs[NL80211_ATTR_DURATION])
11257                 return -EINVAL;
11258
11259         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11260
11261         if (!rdev->ops->remain_on_channel ||
11262             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11263                 return -EOPNOTSUPP;
11264
11265         /*
11266          * We should be on that channel for at least a minimum amount of
11267          * time (10ms) but no longer than the driver supports.
11268          */
11269         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11270             duration > rdev->wiphy.max_remain_on_channel_duration)
11271                 return -EINVAL;
11272
11273         err = nl80211_parse_chandef(rdev, info, &chandef);
11274         if (err)
11275                 return err;
11276
11277         wdev_lock(wdev);
11278         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11279             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11280                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11281                                                              &chandef);
11282                 if (compat_chandef != &chandef) {
11283                         wdev_unlock(wdev);
11284                         return -EBUSY;
11285                 }
11286         }
11287         wdev_unlock(wdev);
11288
11289         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11290         if (!msg)
11291                 return -ENOMEM;
11292
11293         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11294                              NL80211_CMD_REMAIN_ON_CHANNEL);
11295         if (!hdr) {
11296                 err = -ENOBUFS;
11297                 goto free_msg;
11298         }
11299
11300         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11301                                      duration, &cookie);
11302
11303         if (err)
11304                 goto free_msg;
11305
11306         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11307                               NL80211_ATTR_PAD))
11308                 goto nla_put_failure;
11309
11310         genlmsg_end(msg, hdr);
11311
11312         return genlmsg_reply(msg, info);
11313
11314  nla_put_failure:
11315         err = -ENOBUFS;
11316  free_msg:
11317         nlmsg_free(msg);
11318         return err;
11319 }
11320
11321 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11322                                             struct genl_info *info)
11323 {
11324         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11325         struct wireless_dev *wdev = info->user_ptr[1];
11326         u64 cookie;
11327
11328         if (!info->attrs[NL80211_ATTR_COOKIE])
11329                 return -EINVAL;
11330
11331         if (!rdev->ops->cancel_remain_on_channel)
11332                 return -EOPNOTSUPP;
11333
11334         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11335
11336         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11337 }
11338
11339 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11340                                        struct genl_info *info)
11341 {
11342         struct cfg80211_bitrate_mask mask;
11343         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11344         struct net_device *dev = info->user_ptr[1];
11345         struct wireless_dev *wdev = dev->ieee80211_ptr;
11346         int err;
11347
11348         if (!rdev->ops->set_bitrate_mask)
11349                 return -EOPNOTSUPP;
11350
11351         wdev_lock(wdev);
11352         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11353                                             NL80211_ATTR_TX_RATES, &mask,
11354                                             dev, true);
11355         if (err)
11356                 goto out;
11357
11358         err = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11359 out:
11360         wdev_unlock(wdev);
11361         return err;
11362 }
11363
11364 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11365 {
11366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11367         struct wireless_dev *wdev = info->user_ptr[1];
11368         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11369
11370         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11371                 return -EINVAL;
11372
11373         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11374                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11375
11376         switch (wdev->iftype) {
11377         case NL80211_IFTYPE_STATION:
11378         case NL80211_IFTYPE_ADHOC:
11379         case NL80211_IFTYPE_P2P_CLIENT:
11380         case NL80211_IFTYPE_AP:
11381         case NL80211_IFTYPE_AP_VLAN:
11382         case NL80211_IFTYPE_MESH_POINT:
11383         case NL80211_IFTYPE_P2P_GO:
11384         case NL80211_IFTYPE_P2P_DEVICE:
11385                 break;
11386         case NL80211_IFTYPE_NAN:
11387         default:
11388                 return -EOPNOTSUPP;
11389         }
11390
11391         /* not much point in registering if we can't reply */
11392         if (!rdev->ops->mgmt_tx)
11393                 return -EOPNOTSUPP;
11394
11395         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11396             !wiphy_ext_feature_isset(&rdev->wiphy,
11397                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11398                 GENL_SET_ERR_MSG(info,
11399                                  "multicast RX registrations are not supported");
11400                 return -EOPNOTSUPP;
11401         }
11402
11403         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11404                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11405                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11406                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11407                                            info->extack);
11408 }
11409
11410 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11411 {
11412         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11413         struct wireless_dev *wdev = info->user_ptr[1];
11414         struct cfg80211_chan_def chandef;
11415         int err;
11416         void *hdr = NULL;
11417         u64 cookie;
11418         struct sk_buff *msg = NULL;
11419         struct cfg80211_mgmt_tx_params params = {
11420                 .dont_wait_for_ack =
11421                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11422         };
11423
11424         if (!info->attrs[NL80211_ATTR_FRAME])
11425                 return -EINVAL;
11426
11427         if (!rdev->ops->mgmt_tx)
11428                 return -EOPNOTSUPP;
11429
11430         switch (wdev->iftype) {
11431         case NL80211_IFTYPE_P2P_DEVICE:
11432                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11433                         return -EINVAL;
11434                 break;
11435         case NL80211_IFTYPE_STATION:
11436         case NL80211_IFTYPE_ADHOC:
11437         case NL80211_IFTYPE_P2P_CLIENT:
11438         case NL80211_IFTYPE_AP:
11439         case NL80211_IFTYPE_AP_VLAN:
11440         case NL80211_IFTYPE_MESH_POINT:
11441         case NL80211_IFTYPE_P2P_GO:
11442                 break;
11443         case NL80211_IFTYPE_NAN:
11444         default:
11445                 return -EOPNOTSUPP;
11446         }
11447
11448         if (info->attrs[NL80211_ATTR_DURATION]) {
11449                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11450                         return -EINVAL;
11451                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11452
11453                 /*
11454                  * We should wait on the channel for at least a minimum amount
11455                  * of time (10ms) but no longer than the driver supports.
11456                  */
11457                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11458                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11459                         return -EINVAL;
11460         }
11461
11462         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11463
11464         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11465                 return -EINVAL;
11466
11467         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11468
11469         /* get the channel if any has been specified, otherwise pass NULL to
11470          * the driver. The latter will use the current one
11471          */
11472         chandef.chan = NULL;
11473         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11474                 err = nl80211_parse_chandef(rdev, info, &chandef);
11475                 if (err)
11476                         return err;
11477         }
11478
11479         if (!chandef.chan && params.offchan)
11480                 return -EINVAL;
11481
11482         wdev_lock(wdev);
11483         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11484                 wdev_unlock(wdev);
11485                 return -EBUSY;
11486         }
11487         wdev_unlock(wdev);
11488
11489         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11490         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11491
11492         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11493                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11494                 int i;
11495
11496                 if (len % sizeof(u16))
11497                         return -EINVAL;
11498
11499                 params.n_csa_offsets = len / sizeof(u16);
11500                 params.csa_offsets =
11501                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11502
11503                 /* check that all the offsets fit the frame */
11504                 for (i = 0; i < params.n_csa_offsets; i++) {
11505                         if (params.csa_offsets[i] >= params.len)
11506                                 return -EINVAL;
11507                 }
11508         }
11509
11510         if (!params.dont_wait_for_ack) {
11511                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11512                 if (!msg)
11513                         return -ENOMEM;
11514
11515                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11516                                      NL80211_CMD_FRAME);
11517                 if (!hdr) {
11518                         err = -ENOBUFS;
11519                         goto free_msg;
11520                 }
11521         }
11522
11523         params.chan = chandef.chan;
11524         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11525         if (err)
11526                 goto free_msg;
11527
11528         if (msg) {
11529                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11530                                       NL80211_ATTR_PAD))
11531                         goto nla_put_failure;
11532
11533                 genlmsg_end(msg, hdr);
11534                 return genlmsg_reply(msg, info);
11535         }
11536
11537         return 0;
11538
11539  nla_put_failure:
11540         err = -ENOBUFS;
11541  free_msg:
11542         nlmsg_free(msg);
11543         return err;
11544 }
11545
11546 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11547 {
11548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11549         struct wireless_dev *wdev = info->user_ptr[1];
11550         u64 cookie;
11551
11552         if (!info->attrs[NL80211_ATTR_COOKIE])
11553                 return -EINVAL;
11554
11555         if (!rdev->ops->mgmt_tx_cancel_wait)
11556                 return -EOPNOTSUPP;
11557
11558         switch (wdev->iftype) {
11559         case NL80211_IFTYPE_STATION:
11560         case NL80211_IFTYPE_ADHOC:
11561         case NL80211_IFTYPE_P2P_CLIENT:
11562         case NL80211_IFTYPE_AP:
11563         case NL80211_IFTYPE_AP_VLAN:
11564         case NL80211_IFTYPE_P2P_GO:
11565         case NL80211_IFTYPE_P2P_DEVICE:
11566                 break;
11567         case NL80211_IFTYPE_NAN:
11568         default:
11569                 return -EOPNOTSUPP;
11570         }
11571
11572         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11573
11574         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11575 }
11576
11577 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11578 {
11579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11580         struct wireless_dev *wdev;
11581         struct net_device *dev = info->user_ptr[1];
11582         u8 ps_state;
11583         bool state;
11584         int err;
11585
11586         if (!info->attrs[NL80211_ATTR_PS_STATE])
11587                 return -EINVAL;
11588
11589         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11590
11591         wdev = dev->ieee80211_ptr;
11592
11593         if (!rdev->ops->set_power_mgmt)
11594                 return -EOPNOTSUPP;
11595
11596         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11597
11598         if (state == wdev->ps)
11599                 return 0;
11600
11601         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11602         if (!err)
11603                 wdev->ps = state;
11604         return err;
11605 }
11606
11607 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11608 {
11609         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11610         enum nl80211_ps_state ps_state;
11611         struct wireless_dev *wdev;
11612         struct net_device *dev = info->user_ptr[1];
11613         struct sk_buff *msg;
11614         void *hdr;
11615         int err;
11616
11617         wdev = dev->ieee80211_ptr;
11618
11619         if (!rdev->ops->set_power_mgmt)
11620                 return -EOPNOTSUPP;
11621
11622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11623         if (!msg)
11624                 return -ENOMEM;
11625
11626         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11627                              NL80211_CMD_GET_POWER_SAVE);
11628         if (!hdr) {
11629                 err = -ENOBUFS;
11630                 goto free_msg;
11631         }
11632
11633         if (wdev->ps)
11634                 ps_state = NL80211_PS_ENABLED;
11635         else
11636                 ps_state = NL80211_PS_DISABLED;
11637
11638         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11639                 goto nla_put_failure;
11640
11641         genlmsg_end(msg, hdr);
11642         return genlmsg_reply(msg, info);
11643
11644  nla_put_failure:
11645         err = -ENOBUFS;
11646  free_msg:
11647         nlmsg_free(msg);
11648         return err;
11649 }
11650
11651 static const struct nla_policy
11652 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11653         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11654         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11655         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11656         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11657         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11658         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11659         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11660 };
11661
11662 static int nl80211_set_cqm_txe(struct genl_info *info,
11663                                u32 rate, u32 pkts, u32 intvl)
11664 {
11665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11666         struct net_device *dev = info->user_ptr[1];
11667         struct wireless_dev *wdev = dev->ieee80211_ptr;
11668
11669         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11670                 return -EINVAL;
11671
11672         if (!rdev->ops->set_cqm_txe_config)
11673                 return -EOPNOTSUPP;
11674
11675         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11676             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11677                 return -EOPNOTSUPP;
11678
11679         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11680 }
11681
11682 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11683                                     struct net_device *dev)
11684 {
11685         struct wireless_dev *wdev = dev->ieee80211_ptr;
11686         s32 last, low, high;
11687         u32 hyst;
11688         int i, n, low_index;
11689         int err;
11690
11691         /* RSSI reporting disabled? */
11692         if (!wdev->cqm_config)
11693                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11694
11695         /*
11696          * Obtain current RSSI value if possible, if not and no RSSI threshold
11697          * event has been received yet, we should receive an event after a
11698          * connection is established and enough beacons received to calculate
11699          * the average.
11700          */
11701         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11702             rdev->ops->get_station) {
11703                 struct station_info sinfo = {};
11704                 u8 *mac_addr;
11705
11706                 mac_addr = wdev->current_bss->pub.bssid;
11707
11708                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11709                 if (err)
11710                         return err;
11711
11712                 cfg80211_sinfo_release_content(&sinfo);
11713                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11714                         wdev->cqm_config->last_rssi_event_value =
11715                                 (s8) sinfo.rx_beacon_signal_avg;
11716         }
11717
11718         last = wdev->cqm_config->last_rssi_event_value;
11719         hyst = wdev->cqm_config->rssi_hyst;
11720         n = wdev->cqm_config->n_rssi_thresholds;
11721
11722         for (i = 0; i < n; i++) {
11723                 i = array_index_nospec(i, n);
11724                 if (last < wdev->cqm_config->rssi_thresholds[i])
11725                         break;
11726         }
11727
11728         low_index = i - 1;
11729         if (low_index >= 0) {
11730                 low_index = array_index_nospec(low_index, n);
11731                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11732         } else {
11733                 low = S32_MIN;
11734         }
11735         if (i < n) {
11736                 i = array_index_nospec(i, n);
11737                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11738         } else {
11739                 high = S32_MAX;
11740         }
11741
11742         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11743 }
11744
11745 static int nl80211_set_cqm_rssi(struct genl_info *info,
11746                                 const s32 *thresholds, int n_thresholds,
11747                                 u32 hysteresis)
11748 {
11749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11750         struct net_device *dev = info->user_ptr[1];
11751         struct wireless_dev *wdev = dev->ieee80211_ptr;
11752         int i, err;
11753         s32 prev = S32_MIN;
11754
11755         /* Check all values negative and sorted */
11756         for (i = 0; i < n_thresholds; i++) {
11757                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11758                         return -EINVAL;
11759
11760                 prev = thresholds[i];
11761         }
11762
11763         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11764             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11765                 return -EOPNOTSUPP;
11766
11767         wdev_lock(wdev);
11768         cfg80211_cqm_config_free(wdev);
11769         wdev_unlock(wdev);
11770
11771         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11772                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11773                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11774
11775                 return rdev_set_cqm_rssi_config(rdev, dev,
11776                                                 thresholds[0], hysteresis);
11777         }
11778
11779         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11780                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11781                 return -EOPNOTSUPP;
11782
11783         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11784                 n_thresholds = 0;
11785
11786         wdev_lock(wdev);
11787         if (n_thresholds) {
11788                 struct cfg80211_cqm_config *cqm_config;
11789
11790                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11791                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11792                 if (!cqm_config) {
11793                         err = -ENOMEM;
11794                         goto unlock;
11795                 }
11796
11797                 cqm_config->rssi_hyst = hysteresis;
11798                 cqm_config->n_rssi_thresholds = n_thresholds;
11799                 memcpy(cqm_config->rssi_thresholds, thresholds,
11800                        n_thresholds * sizeof(s32));
11801
11802                 wdev->cqm_config = cqm_config;
11803         }
11804
11805         err = cfg80211_cqm_rssi_update(rdev, dev);
11806
11807 unlock:
11808         wdev_unlock(wdev);
11809
11810         return err;
11811 }
11812
11813 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11814 {
11815         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11816         struct nlattr *cqm;
11817         int err;
11818
11819         cqm = info->attrs[NL80211_ATTR_CQM];
11820         if (!cqm)
11821                 return -EINVAL;
11822
11823         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11824                                           nl80211_attr_cqm_policy,
11825                                           info->extack);
11826         if (err)
11827                 return err;
11828
11829         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11830             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11831                 const s32 *thresholds =
11832                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11833                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11834                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11835
11836                 if (len % 4)
11837                         return -EINVAL;
11838
11839                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11840                                             hysteresis);
11841         }
11842
11843         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11844             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11845             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11846                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11847                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11848                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11849
11850                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11851         }
11852
11853         return -EINVAL;
11854 }
11855
11856 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11857 {
11858         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11859         struct net_device *dev = info->user_ptr[1];
11860         struct ocb_setup setup = {};
11861         int err;
11862
11863         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11864         if (err)
11865                 return err;
11866
11867         return cfg80211_join_ocb(rdev, dev, &setup);
11868 }
11869
11870 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11871 {
11872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11873         struct net_device *dev = info->user_ptr[1];
11874
11875         return cfg80211_leave_ocb(rdev, dev);
11876 }
11877
11878 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11879 {
11880         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11881         struct net_device *dev = info->user_ptr[1];
11882         struct mesh_config cfg;
11883         struct mesh_setup setup;
11884         int err;
11885
11886         /* start with default */
11887         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11888         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11889
11890         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11891                 /* and parse parameters if given */
11892                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11893                 if (err)
11894                         return err;
11895         }
11896
11897         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11898             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11899                 return -EINVAL;
11900
11901         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11902         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11903
11904         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11905             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11906                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11907                         return -EINVAL;
11908
11909         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11910                 setup.beacon_interval =
11911                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11912
11913                 err = cfg80211_validate_beacon_int(rdev,
11914                                                    NL80211_IFTYPE_MESH_POINT,
11915                                                    setup.beacon_interval);
11916                 if (err)
11917                         return err;
11918         }
11919
11920         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11921                 setup.dtim_period =
11922                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11923                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11924                         return -EINVAL;
11925         }
11926
11927         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11928                 /* parse additional setup parameters if given */
11929                 err = nl80211_parse_mesh_setup(info, &setup);
11930                 if (err)
11931                         return err;
11932         }
11933
11934         if (setup.user_mpm)
11935                 cfg.auto_open_plinks = false;
11936
11937         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11938                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11939                 if (err)
11940                         return err;
11941         } else {
11942                 /* __cfg80211_join_mesh() will sort it out */
11943                 setup.chandef.chan = NULL;
11944         }
11945
11946         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11947                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11948                 int n_rates =
11949                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11950                 struct ieee80211_supported_band *sband;
11951
11952                 if (!setup.chandef.chan)
11953                         return -EINVAL;
11954
11955                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11956
11957                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11958                                              &setup.basic_rates);
11959                 if (err)
11960                         return err;
11961         }
11962
11963         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11964                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11965                                                     NL80211_ATTR_TX_RATES,
11966                                                     &setup.beacon_rate,
11967                                                     dev, false);
11968                 if (err)
11969                         return err;
11970
11971                 if (!setup.chandef.chan)
11972                         return -EINVAL;
11973
11974                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11975                                               &setup.beacon_rate);
11976                 if (err)
11977                         return err;
11978         }
11979
11980         setup.userspace_handles_dfs =
11981                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11982
11983         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11984                 int r = validate_pae_over_nl80211(rdev, info);
11985
11986                 if (r < 0)
11987                         return r;
11988
11989                 setup.control_port_over_nl80211 = true;
11990         }
11991
11992         wdev_lock(dev->ieee80211_ptr);
11993         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11994         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11995                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11996         wdev_unlock(dev->ieee80211_ptr);
11997
11998         return err;
11999 }
12000
12001 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12002 {
12003         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12004         struct net_device *dev = info->user_ptr[1];
12005
12006         return cfg80211_leave_mesh(rdev, dev);
12007 }
12008
12009 #ifdef CONFIG_PM
12010 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
12011                                         struct cfg80211_registered_device *rdev)
12012 {
12013         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
12014         struct nlattr *nl_pats, *nl_pat;
12015         int i, pat_len;
12016
12017         if (!wowlan->n_patterns)
12018                 return 0;
12019
12020         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12021         if (!nl_pats)
12022                 return -ENOBUFS;
12023
12024         for (i = 0; i < wowlan->n_patterns; i++) {
12025                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12026                 if (!nl_pat)
12027                         return -ENOBUFS;
12028                 pat_len = wowlan->patterns[i].pattern_len;
12029                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12030                             wowlan->patterns[i].mask) ||
12031                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12032                             wowlan->patterns[i].pattern) ||
12033                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12034                                 wowlan->patterns[i].pkt_offset))
12035                         return -ENOBUFS;
12036                 nla_nest_end(msg, nl_pat);
12037         }
12038         nla_nest_end(msg, nl_pats);
12039
12040         return 0;
12041 }
12042
12043 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12044                                    struct cfg80211_wowlan_tcp *tcp)
12045 {
12046         struct nlattr *nl_tcp;
12047
12048         if (!tcp)
12049                 return 0;
12050
12051         nl_tcp = nla_nest_start_noflag(msg,
12052                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12053         if (!nl_tcp)
12054                 return -ENOBUFS;
12055
12056         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12057             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12058             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12059             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12060             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12061             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12062                     tcp->payload_len, tcp->payload) ||
12063             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12064                         tcp->data_interval) ||
12065             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12066                     tcp->wake_len, tcp->wake_data) ||
12067             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12068                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12069                 return -ENOBUFS;
12070
12071         if (tcp->payload_seq.len &&
12072             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12073                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12074                 return -ENOBUFS;
12075
12076         if (tcp->payload_tok.len &&
12077             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12078                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12079                     &tcp->payload_tok))
12080                 return -ENOBUFS;
12081
12082         nla_nest_end(msg, nl_tcp);
12083
12084         return 0;
12085 }
12086
12087 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12088                                   struct cfg80211_sched_scan_request *req)
12089 {
12090         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12091         int i;
12092
12093         if (!req)
12094                 return 0;
12095
12096         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12097         if (!nd)
12098                 return -ENOBUFS;
12099
12100         if (req->n_scan_plans == 1 &&
12101             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12102                         req->scan_plans[0].interval * 1000))
12103                 return -ENOBUFS;
12104
12105         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12106                 return -ENOBUFS;
12107
12108         if (req->relative_rssi_set) {
12109                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12110
12111                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12112                                req->relative_rssi))
12113                         return -ENOBUFS;
12114
12115                 rssi_adjust.band = req->rssi_adjust.band;
12116                 rssi_adjust.delta = req->rssi_adjust.delta;
12117                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12118                             sizeof(rssi_adjust), &rssi_adjust))
12119                         return -ENOBUFS;
12120         }
12121
12122         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12123         if (!freqs)
12124                 return -ENOBUFS;
12125
12126         for (i = 0; i < req->n_channels; i++) {
12127                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12128                         return -ENOBUFS;
12129         }
12130
12131         nla_nest_end(msg, freqs);
12132
12133         if (req->n_match_sets) {
12134                 matches = nla_nest_start_noflag(msg,
12135                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12136                 if (!matches)
12137                         return -ENOBUFS;
12138
12139                 for (i = 0; i < req->n_match_sets; i++) {
12140                         match = nla_nest_start_noflag(msg, i);
12141                         if (!match)
12142                                 return -ENOBUFS;
12143
12144                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12145                                     req->match_sets[i].ssid.ssid_len,
12146                                     req->match_sets[i].ssid.ssid))
12147                                 return -ENOBUFS;
12148                         nla_nest_end(msg, match);
12149                 }
12150                 nla_nest_end(msg, matches);
12151         }
12152
12153         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12154         if (!scan_plans)
12155                 return -ENOBUFS;
12156
12157         for (i = 0; i < req->n_scan_plans; i++) {
12158                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12159                 if (!scan_plan)
12160                         return -ENOBUFS;
12161
12162                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12163                                 req->scan_plans[i].interval) ||
12164                     (req->scan_plans[i].iterations &&
12165                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12166                                  req->scan_plans[i].iterations)))
12167                         return -ENOBUFS;
12168                 nla_nest_end(msg, scan_plan);
12169         }
12170         nla_nest_end(msg, scan_plans);
12171
12172         nla_nest_end(msg, nd);
12173
12174         return 0;
12175 }
12176
12177 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12178 {
12179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12180         struct sk_buff *msg;
12181         void *hdr;
12182         u32 size = NLMSG_DEFAULT_SIZE;
12183
12184         if (!rdev->wiphy.wowlan)
12185                 return -EOPNOTSUPP;
12186
12187         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12188                 /* adjust size to have room for all the data */
12189                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12190                         rdev->wiphy.wowlan_config->tcp->payload_len +
12191                         rdev->wiphy.wowlan_config->tcp->wake_len +
12192                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12193         }
12194
12195         msg = nlmsg_new(size, GFP_KERNEL);
12196         if (!msg)
12197                 return -ENOMEM;
12198
12199         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12200                              NL80211_CMD_GET_WOWLAN);
12201         if (!hdr)
12202                 goto nla_put_failure;
12203
12204         if (rdev->wiphy.wowlan_config) {
12205                 struct nlattr *nl_wowlan;
12206
12207                 nl_wowlan = nla_nest_start_noflag(msg,
12208                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12209                 if (!nl_wowlan)
12210                         goto nla_put_failure;
12211
12212                 if ((rdev->wiphy.wowlan_config->any &&
12213                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12214                     (rdev->wiphy.wowlan_config->disconnect &&
12215                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12216                     (rdev->wiphy.wowlan_config->magic_pkt &&
12217                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12218                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12219                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12220                     (rdev->wiphy.wowlan_config->eap_identity_req &&
12221                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12222                     (rdev->wiphy.wowlan_config->four_way_handshake &&
12223                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12224                     (rdev->wiphy.wowlan_config->rfkill_release &&
12225                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12226                         goto nla_put_failure;
12227
12228                 if (nl80211_send_wowlan_patterns(msg, rdev))
12229                         goto nla_put_failure;
12230
12231                 if (nl80211_send_wowlan_tcp(msg,
12232                                             rdev->wiphy.wowlan_config->tcp))
12233                         goto nla_put_failure;
12234
12235                 if (nl80211_send_wowlan_nd(
12236                             msg,
12237                             rdev->wiphy.wowlan_config->nd_config))
12238                         goto nla_put_failure;
12239
12240                 nla_nest_end(msg, nl_wowlan);
12241         }
12242
12243         genlmsg_end(msg, hdr);
12244         return genlmsg_reply(msg, info);
12245
12246 nla_put_failure:
12247         nlmsg_free(msg);
12248         return -ENOBUFS;
12249 }
12250
12251 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12252                                     struct nlattr *attr,
12253                                     struct cfg80211_wowlan *trig)
12254 {
12255         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12256         struct cfg80211_wowlan_tcp *cfg;
12257         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12258         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12259         u32 size;
12260         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12261         int err, port;
12262
12263         if (!rdev->wiphy.wowlan->tcp)
12264                 return -EINVAL;
12265
12266         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12267                                           nl80211_wowlan_tcp_policy, NULL);
12268         if (err)
12269                 return err;
12270
12271         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12272             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12273             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12274             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12275             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12276             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12277             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12278             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12279                 return -EINVAL;
12280
12281         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12282         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12283                 return -EINVAL;
12284
12285         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12286                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12287             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12288                 return -EINVAL;
12289
12290         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12291         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12292                 return -EINVAL;
12293
12294         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12295         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12296                 return -EINVAL;
12297
12298         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12299                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12300
12301                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12302                 tokens_size = tokln - sizeof(*tok);
12303
12304                 if (!tok->len || tokens_size % tok->len)
12305                         return -EINVAL;
12306                 if (!rdev->wiphy.wowlan->tcp->tok)
12307                         return -EINVAL;
12308                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12309                         return -EINVAL;
12310                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12311                         return -EINVAL;
12312                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12313                         return -EINVAL;
12314                 if (tok->offset + tok->len > data_size)
12315                         return -EINVAL;
12316         }
12317
12318         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12319                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12320                 if (!rdev->wiphy.wowlan->tcp->seq)
12321                         return -EINVAL;
12322                 if (seq->len == 0 || seq->len > 4)
12323                         return -EINVAL;
12324                 if (seq->len + seq->offset > data_size)
12325                         return -EINVAL;
12326         }
12327
12328         size = sizeof(*cfg);
12329         size += data_size;
12330         size += wake_size + wake_mask_size;
12331         size += tokens_size;
12332
12333         cfg = kzalloc(size, GFP_KERNEL);
12334         if (!cfg)
12335                 return -ENOMEM;
12336         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12337         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12338         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12339                ETH_ALEN);
12340         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12341                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12342         else
12343                 port = 0;
12344 #ifdef CONFIG_INET
12345         /* allocate a socket and port for it and use it */
12346         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12347                             IPPROTO_TCP, &cfg->sock, 1);
12348         if (err) {
12349                 kfree(cfg);
12350                 return err;
12351         }
12352         if (inet_csk_get_port(cfg->sock->sk, port)) {
12353                 sock_release(cfg->sock);
12354                 kfree(cfg);
12355                 return -EADDRINUSE;
12356         }
12357         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12358 #else
12359         if (!port) {
12360                 kfree(cfg);
12361                 return -EINVAL;
12362         }
12363         cfg->src_port = port;
12364 #endif
12365
12366         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12367         cfg->payload_len = data_size;
12368         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12369         memcpy((void *)cfg->payload,
12370                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12371                data_size);
12372         if (seq)
12373                 cfg->payload_seq = *seq;
12374         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12375         cfg->wake_len = wake_size;
12376         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12377         memcpy((void *)cfg->wake_data,
12378                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12379                wake_size);
12380         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12381                          data_size + wake_size;
12382         memcpy((void *)cfg->wake_mask,
12383                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12384                wake_mask_size);
12385         if (tok) {
12386                 cfg->tokens_size = tokens_size;
12387                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12388         }
12389
12390         trig->tcp = cfg;
12391
12392         return 0;
12393 }
12394
12395 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12396                                    const struct wiphy_wowlan_support *wowlan,
12397                                    struct nlattr *attr,
12398                                    struct cfg80211_wowlan *trig)
12399 {
12400         struct nlattr **tb;
12401         int err;
12402
12403         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12404         if (!tb)
12405                 return -ENOMEM;
12406
12407         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12408                 err = -EOPNOTSUPP;
12409                 goto out;
12410         }
12411
12412         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12413                                           nl80211_policy, NULL);
12414         if (err)
12415                 goto out;
12416
12417         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12418                                                    wowlan->max_nd_match_sets);
12419         err = PTR_ERR_OR_ZERO(trig->nd_config);
12420         if (err)
12421                 trig->nd_config = NULL;
12422
12423 out:
12424         kfree(tb);
12425         return err;
12426 }
12427
12428 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12429 {
12430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12431         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12432         struct cfg80211_wowlan new_triggers = {};
12433         struct cfg80211_wowlan *ntrig;
12434         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12435         int err, i;
12436         bool prev_enabled = rdev->wiphy.wowlan_config;
12437         bool regular = false;
12438
12439         if (!wowlan)
12440                 return -EOPNOTSUPP;
12441
12442         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12443                 cfg80211_rdev_free_wowlan(rdev);
12444                 rdev->wiphy.wowlan_config = NULL;
12445                 goto set_wakeup;
12446         }
12447
12448         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12449                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12450                                           nl80211_wowlan_policy, info->extack);
12451         if (err)
12452                 return err;
12453
12454         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12455                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12456                         return -EINVAL;
12457                 new_triggers.any = true;
12458         }
12459
12460         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12461                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12462                         return -EINVAL;
12463                 new_triggers.disconnect = true;
12464                 regular = true;
12465         }
12466
12467         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12468                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12469                         return -EINVAL;
12470                 new_triggers.magic_pkt = true;
12471                 regular = true;
12472         }
12473
12474         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12475                 return -EINVAL;
12476
12477         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12478                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12479                         return -EINVAL;
12480                 new_triggers.gtk_rekey_failure = true;
12481                 regular = true;
12482         }
12483
12484         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12485                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12486                         return -EINVAL;
12487                 new_triggers.eap_identity_req = true;
12488                 regular = true;
12489         }
12490
12491         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12492                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12493                         return -EINVAL;
12494                 new_triggers.four_way_handshake = true;
12495                 regular = true;
12496         }
12497
12498         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12499                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12500                         return -EINVAL;
12501                 new_triggers.rfkill_release = true;
12502                 regular = true;
12503         }
12504
12505         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12506                 struct nlattr *pat;
12507                 int n_patterns = 0;
12508                 int rem, pat_len, mask_len, pkt_offset;
12509                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12510
12511                 regular = true;
12512
12513                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12514                                     rem)
12515                         n_patterns++;
12516                 if (n_patterns > wowlan->n_patterns)
12517                         return -EINVAL;
12518
12519                 new_triggers.patterns = kcalloc(n_patterns,
12520                                                 sizeof(new_triggers.patterns[0]),
12521                                                 GFP_KERNEL);
12522                 if (!new_triggers.patterns)
12523                         return -ENOMEM;
12524
12525                 new_triggers.n_patterns = n_patterns;
12526                 i = 0;
12527
12528                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12529                                     rem) {
12530                         u8 *mask_pat;
12531
12532                         err = nla_parse_nested_deprecated(pat_tb,
12533                                                           MAX_NL80211_PKTPAT,
12534                                                           pat,
12535                                                           nl80211_packet_pattern_policy,
12536                                                           info->extack);
12537                         if (err)
12538                                 goto error;
12539
12540                         err = -EINVAL;
12541                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12542                             !pat_tb[NL80211_PKTPAT_PATTERN])
12543                                 goto error;
12544                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12545                         mask_len = DIV_ROUND_UP(pat_len, 8);
12546                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12547                                 goto error;
12548                         if (pat_len > wowlan->pattern_max_len ||
12549                             pat_len < wowlan->pattern_min_len)
12550                                 goto error;
12551
12552                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12553                                 pkt_offset = 0;
12554                         else
12555                                 pkt_offset = nla_get_u32(
12556                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12557                         if (pkt_offset > wowlan->max_pkt_offset)
12558                                 goto error;
12559                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12560
12561                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12562                         if (!mask_pat) {
12563                                 err = -ENOMEM;
12564                                 goto error;
12565                         }
12566                         new_triggers.patterns[i].mask = mask_pat;
12567                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12568                                mask_len);
12569                         mask_pat += mask_len;
12570                         new_triggers.patterns[i].pattern = mask_pat;
12571                         new_triggers.patterns[i].pattern_len = pat_len;
12572                         memcpy(mask_pat,
12573                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12574                                pat_len);
12575                         i++;
12576                 }
12577         }
12578
12579         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12580                 regular = true;
12581                 err = nl80211_parse_wowlan_tcp(
12582                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12583                         &new_triggers);
12584                 if (err)
12585                         goto error;
12586         }
12587
12588         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12589                 regular = true;
12590                 err = nl80211_parse_wowlan_nd(
12591                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12592                         &new_triggers);
12593                 if (err)
12594                         goto error;
12595         }
12596
12597         /* The 'any' trigger means the device continues operating more or less
12598          * as in its normal operation mode and wakes up the host on most of the
12599          * normal interrupts (like packet RX, ...)
12600          * It therefore makes little sense to combine with the more constrained
12601          * wakeup trigger modes.
12602          */
12603         if (new_triggers.any && regular) {
12604                 err = -EINVAL;
12605                 goto error;
12606         }
12607
12608         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12609         if (!ntrig) {
12610                 err = -ENOMEM;
12611                 goto error;
12612         }
12613         cfg80211_rdev_free_wowlan(rdev);
12614         rdev->wiphy.wowlan_config = ntrig;
12615
12616  set_wakeup:
12617         if (rdev->ops->set_wakeup &&
12618             prev_enabled != !!rdev->wiphy.wowlan_config)
12619                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12620
12621         return 0;
12622  error:
12623         for (i = 0; i < new_triggers.n_patterns; i++)
12624                 kfree(new_triggers.patterns[i].mask);
12625         kfree(new_triggers.patterns);
12626         if (new_triggers.tcp && new_triggers.tcp->sock)
12627                 sock_release(new_triggers.tcp->sock);
12628         kfree(new_triggers.tcp);
12629         kfree(new_triggers.nd_config);
12630         return err;
12631 }
12632 #endif
12633
12634 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12635                                        struct cfg80211_registered_device *rdev)
12636 {
12637         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12638         int i, j, pat_len;
12639         struct cfg80211_coalesce_rules *rule;
12640
12641         if (!rdev->coalesce->n_rules)
12642                 return 0;
12643
12644         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12645         if (!nl_rules)
12646                 return -ENOBUFS;
12647
12648         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12649                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12650                 if (!nl_rule)
12651                         return -ENOBUFS;
12652
12653                 rule = &rdev->coalesce->rules[i];
12654                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12655                                 rule->delay))
12656                         return -ENOBUFS;
12657
12658                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12659                                 rule->condition))
12660                         return -ENOBUFS;
12661
12662                 nl_pats = nla_nest_start_noflag(msg,
12663                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12664                 if (!nl_pats)
12665                         return -ENOBUFS;
12666
12667                 for (j = 0; j < rule->n_patterns; j++) {
12668                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12669                         if (!nl_pat)
12670                                 return -ENOBUFS;
12671                         pat_len = rule->patterns[j].pattern_len;
12672                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12673                                     DIV_ROUND_UP(pat_len, 8),
12674                                     rule->patterns[j].mask) ||
12675                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12676                                     rule->patterns[j].pattern) ||
12677                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12678                                         rule->patterns[j].pkt_offset))
12679                                 return -ENOBUFS;
12680                         nla_nest_end(msg, nl_pat);
12681                 }
12682                 nla_nest_end(msg, nl_pats);
12683                 nla_nest_end(msg, nl_rule);
12684         }
12685         nla_nest_end(msg, nl_rules);
12686
12687         return 0;
12688 }
12689
12690 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12691 {
12692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12693         struct sk_buff *msg;
12694         void *hdr;
12695
12696         if (!rdev->wiphy.coalesce)
12697                 return -EOPNOTSUPP;
12698
12699         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12700         if (!msg)
12701                 return -ENOMEM;
12702
12703         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12704                              NL80211_CMD_GET_COALESCE);
12705         if (!hdr)
12706                 goto nla_put_failure;
12707
12708         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12709                 goto nla_put_failure;
12710
12711         genlmsg_end(msg, hdr);
12712         return genlmsg_reply(msg, info);
12713
12714 nla_put_failure:
12715         nlmsg_free(msg);
12716         return -ENOBUFS;
12717 }
12718
12719 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12720 {
12721         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12722         int i, j;
12723         struct cfg80211_coalesce_rules *rule;
12724
12725         if (!coalesce)
12726                 return;
12727
12728         for (i = 0; i < coalesce->n_rules; i++) {
12729                 rule = &coalesce->rules[i];
12730                 for (j = 0; j < rule->n_patterns; j++)
12731                         kfree(rule->patterns[j].mask);
12732                 kfree(rule->patterns);
12733         }
12734         kfree(coalesce->rules);
12735         kfree(coalesce);
12736         rdev->coalesce = NULL;
12737 }
12738
12739 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12740                                        struct nlattr *rule,
12741                                        struct cfg80211_coalesce_rules *new_rule)
12742 {
12743         int err, i;
12744         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12745         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12746         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12747         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12748
12749         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12750                                           rule, nl80211_coalesce_policy, NULL);
12751         if (err)
12752                 return err;
12753
12754         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12755                 new_rule->delay =
12756                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12757         if (new_rule->delay > coalesce->max_delay)
12758                 return -EINVAL;
12759
12760         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12761                 new_rule->condition =
12762                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12763
12764         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12765                 return -EINVAL;
12766
12767         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12768                             rem)
12769                 n_patterns++;
12770         if (n_patterns > coalesce->n_patterns)
12771                 return -EINVAL;
12772
12773         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12774                                      GFP_KERNEL);
12775         if (!new_rule->patterns)
12776                 return -ENOMEM;
12777
12778         new_rule->n_patterns = n_patterns;
12779         i = 0;
12780
12781         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12782                             rem) {
12783                 u8 *mask_pat;
12784
12785                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12786                                                   pat,
12787                                                   nl80211_packet_pattern_policy,
12788                                                   NULL);
12789                 if (err)
12790                         return err;
12791
12792                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12793                     !pat_tb[NL80211_PKTPAT_PATTERN])
12794                         return -EINVAL;
12795                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12796                 mask_len = DIV_ROUND_UP(pat_len, 8);
12797                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12798                         return -EINVAL;
12799                 if (pat_len > coalesce->pattern_max_len ||
12800                     pat_len < coalesce->pattern_min_len)
12801                         return -EINVAL;
12802
12803                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12804                         pkt_offset = 0;
12805                 else
12806                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12807                 if (pkt_offset > coalesce->max_pkt_offset)
12808                         return -EINVAL;
12809                 new_rule->patterns[i].pkt_offset = pkt_offset;
12810
12811                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12812                 if (!mask_pat)
12813                         return -ENOMEM;
12814
12815                 new_rule->patterns[i].mask = mask_pat;
12816                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12817                        mask_len);
12818
12819                 mask_pat += mask_len;
12820                 new_rule->patterns[i].pattern = mask_pat;
12821                 new_rule->patterns[i].pattern_len = pat_len;
12822                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12823                        pat_len);
12824                 i++;
12825         }
12826
12827         return 0;
12828 }
12829
12830 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12831 {
12832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12833         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12834         struct cfg80211_coalesce new_coalesce = {};
12835         struct cfg80211_coalesce *n_coalesce;
12836         int err, rem_rule, n_rules = 0, i, j;
12837         struct nlattr *rule;
12838         struct cfg80211_coalesce_rules *tmp_rule;
12839
12840         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12841                 return -EOPNOTSUPP;
12842
12843         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12844                 cfg80211_rdev_free_coalesce(rdev);
12845                 rdev_set_coalesce(rdev, NULL);
12846                 return 0;
12847         }
12848
12849         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12850                             rem_rule)
12851                 n_rules++;
12852         if (n_rules > coalesce->n_rules)
12853                 return -EINVAL;
12854
12855         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12856                                      GFP_KERNEL);
12857         if (!new_coalesce.rules)
12858                 return -ENOMEM;
12859
12860         new_coalesce.n_rules = n_rules;
12861         i = 0;
12862
12863         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12864                             rem_rule) {
12865                 err = nl80211_parse_coalesce_rule(rdev, rule,
12866                                                   &new_coalesce.rules[i]);
12867                 if (err)
12868                         goto error;
12869
12870                 i++;
12871         }
12872
12873         err = rdev_set_coalesce(rdev, &new_coalesce);
12874         if (err)
12875                 goto error;
12876
12877         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12878         if (!n_coalesce) {
12879                 err = -ENOMEM;
12880                 goto error;
12881         }
12882         cfg80211_rdev_free_coalesce(rdev);
12883         rdev->coalesce = n_coalesce;
12884
12885         return 0;
12886 error:
12887         for (i = 0; i < new_coalesce.n_rules; i++) {
12888                 tmp_rule = &new_coalesce.rules[i];
12889                 for (j = 0; j < tmp_rule->n_patterns; j++)
12890                         kfree(tmp_rule->patterns[j].mask);
12891                 kfree(tmp_rule->patterns);
12892         }
12893         kfree(new_coalesce.rules);
12894
12895         return err;
12896 }
12897
12898 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12899 {
12900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12901         struct net_device *dev = info->user_ptr[1];
12902         struct wireless_dev *wdev = dev->ieee80211_ptr;
12903         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12904         struct cfg80211_gtk_rekey_data rekey_data = {};
12905         int err;
12906
12907         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12908                 return -EINVAL;
12909
12910         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12911                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12912                                           nl80211_rekey_policy, info->extack);
12913         if (err)
12914                 return err;
12915
12916         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12917             !tb[NL80211_REKEY_DATA_KCK])
12918                 return -EINVAL;
12919         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12920             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12921               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12922                 return -ERANGE;
12923         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12924             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12925               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12926                 return -ERANGE;
12927
12928         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12929         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12930         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12931         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12932         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12933         if (tb[NL80211_REKEY_DATA_AKM])
12934                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12935
12936         wdev_lock(wdev);
12937         if (!wdev->current_bss) {
12938                 err = -ENOTCONN;
12939                 goto out;
12940         }
12941
12942         if (!rdev->ops->set_rekey_data) {
12943                 err = -EOPNOTSUPP;
12944                 goto out;
12945         }
12946
12947         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12948  out:
12949         wdev_unlock(wdev);
12950         return err;
12951 }
12952
12953 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12954                                              struct genl_info *info)
12955 {
12956         struct net_device *dev = info->user_ptr[1];
12957         struct wireless_dev *wdev = dev->ieee80211_ptr;
12958
12959         if (wdev->iftype != NL80211_IFTYPE_AP &&
12960             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12961                 return -EINVAL;
12962
12963         if (wdev->ap_unexpected_nlportid)
12964                 return -EBUSY;
12965
12966         wdev->ap_unexpected_nlportid = info->snd_portid;
12967         return 0;
12968 }
12969
12970 static int nl80211_probe_client(struct sk_buff *skb,
12971                                 struct genl_info *info)
12972 {
12973         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12974         struct net_device *dev = info->user_ptr[1];
12975         struct wireless_dev *wdev = dev->ieee80211_ptr;
12976         struct sk_buff *msg;
12977         void *hdr;
12978         const u8 *addr;
12979         u64 cookie;
12980         int err;
12981
12982         if (wdev->iftype != NL80211_IFTYPE_AP &&
12983             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12984                 return -EOPNOTSUPP;
12985
12986         if (!info->attrs[NL80211_ATTR_MAC])
12987                 return -EINVAL;
12988
12989         if (!rdev->ops->probe_client)
12990                 return -EOPNOTSUPP;
12991
12992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12993         if (!msg)
12994                 return -ENOMEM;
12995
12996         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12997                              NL80211_CMD_PROBE_CLIENT);
12998         if (!hdr) {
12999                 err = -ENOBUFS;
13000                 goto free_msg;
13001         }
13002
13003         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13004
13005         err = rdev_probe_client(rdev, dev, addr, &cookie);
13006         if (err)
13007                 goto free_msg;
13008
13009         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13010                               NL80211_ATTR_PAD))
13011                 goto nla_put_failure;
13012
13013         genlmsg_end(msg, hdr);
13014
13015         return genlmsg_reply(msg, info);
13016
13017  nla_put_failure:
13018         err = -ENOBUFS;
13019  free_msg:
13020         nlmsg_free(msg);
13021         return err;
13022 }
13023
13024 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13025 {
13026         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13027         struct cfg80211_beacon_registration *reg, *nreg;
13028         int rv;
13029
13030         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13031                 return -EOPNOTSUPP;
13032
13033         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13034         if (!nreg)
13035                 return -ENOMEM;
13036
13037         /* First, check if already registered. */
13038         spin_lock_bh(&rdev->beacon_registrations_lock);
13039         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13040                 if (reg->nlportid == info->snd_portid) {
13041                         rv = -EALREADY;
13042                         goto out_err;
13043                 }
13044         }
13045         /* Add it to the list */
13046         nreg->nlportid = info->snd_portid;
13047         list_add(&nreg->list, &rdev->beacon_registrations);
13048
13049         spin_unlock_bh(&rdev->beacon_registrations_lock);
13050
13051         return 0;
13052 out_err:
13053         spin_unlock_bh(&rdev->beacon_registrations_lock);
13054         kfree(nreg);
13055         return rv;
13056 }
13057
13058 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13059 {
13060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13061         struct wireless_dev *wdev = info->user_ptr[1];
13062         int err;
13063
13064         if (!rdev->ops->start_p2p_device)
13065                 return -EOPNOTSUPP;
13066
13067         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13068                 return -EOPNOTSUPP;
13069
13070         if (wdev_running(wdev))
13071                 return 0;
13072
13073         if (rfkill_blocked(rdev->wiphy.rfkill))
13074                 return -ERFKILL;
13075
13076         err = rdev_start_p2p_device(rdev, wdev);
13077         if (err)
13078                 return err;
13079
13080         wdev->is_running = true;
13081         rdev->opencount++;
13082
13083         return 0;
13084 }
13085
13086 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13087 {
13088         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13089         struct wireless_dev *wdev = info->user_ptr[1];
13090
13091         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13092                 return -EOPNOTSUPP;
13093
13094         if (!rdev->ops->stop_p2p_device)
13095                 return -EOPNOTSUPP;
13096
13097         cfg80211_stop_p2p_device(rdev, wdev);
13098
13099         return 0;
13100 }
13101
13102 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13103 {
13104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13105         struct wireless_dev *wdev = info->user_ptr[1];
13106         struct cfg80211_nan_conf conf = {};
13107         int err;
13108
13109         if (wdev->iftype != NL80211_IFTYPE_NAN)
13110                 return -EOPNOTSUPP;
13111
13112         if (wdev_running(wdev))
13113                 return -EEXIST;
13114
13115         if (rfkill_blocked(rdev->wiphy.rfkill))
13116                 return -ERFKILL;
13117
13118         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13119                 return -EINVAL;
13120
13121         conf.master_pref =
13122                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13123
13124         if (info->attrs[NL80211_ATTR_BANDS]) {
13125                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13126
13127                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13128                         return -EOPNOTSUPP;
13129
13130                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13131                         return -EINVAL;
13132
13133                 conf.bands = bands;
13134         }
13135
13136         err = rdev_start_nan(rdev, wdev, &conf);
13137         if (err)
13138                 return err;
13139
13140         wdev->is_running = true;
13141         rdev->opencount++;
13142
13143         return 0;
13144 }
13145
13146 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13147 {
13148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13149         struct wireless_dev *wdev = info->user_ptr[1];
13150
13151         if (wdev->iftype != NL80211_IFTYPE_NAN)
13152                 return -EOPNOTSUPP;
13153
13154         cfg80211_stop_nan(rdev, wdev);
13155
13156         return 0;
13157 }
13158
13159 static int validate_nan_filter(struct nlattr *filter_attr)
13160 {
13161         struct nlattr *attr;
13162         int len = 0, n_entries = 0, rem;
13163
13164         nla_for_each_nested(attr, filter_attr, rem) {
13165                 len += nla_len(attr);
13166                 n_entries++;
13167         }
13168
13169         if (len >= U8_MAX)
13170                 return -EINVAL;
13171
13172         return n_entries;
13173 }
13174
13175 static int handle_nan_filter(struct nlattr *attr_filter,
13176                              struct cfg80211_nan_func *func,
13177                              bool tx)
13178 {
13179         struct nlattr *attr;
13180         int n_entries, rem, i;
13181         struct cfg80211_nan_func_filter *filter;
13182
13183         n_entries = validate_nan_filter(attr_filter);
13184         if (n_entries < 0)
13185                 return n_entries;
13186
13187         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13188
13189         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13190         if (!filter)
13191                 return -ENOMEM;
13192
13193         i = 0;
13194         nla_for_each_nested(attr, attr_filter, rem) {
13195                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13196                 if (!filter[i].filter)
13197                         goto err;
13198
13199                 filter[i].len = nla_len(attr);
13200                 i++;
13201         }
13202         if (tx) {
13203                 func->num_tx_filters = n_entries;
13204                 func->tx_filters = filter;
13205         } else {
13206                 func->num_rx_filters = n_entries;
13207                 func->rx_filters = filter;
13208         }
13209
13210         return 0;
13211
13212 err:
13213         i = 0;
13214         nla_for_each_nested(attr, attr_filter, rem) {
13215                 kfree(filter[i].filter);
13216                 i++;
13217         }
13218         kfree(filter);
13219         return -ENOMEM;
13220 }
13221
13222 static int nl80211_nan_add_func(struct sk_buff *skb,
13223                                 struct genl_info *info)
13224 {
13225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13226         struct wireless_dev *wdev = info->user_ptr[1];
13227         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13228         struct cfg80211_nan_func *func;
13229         struct sk_buff *msg = NULL;
13230         void *hdr = NULL;
13231         int err = 0;
13232
13233         if (wdev->iftype != NL80211_IFTYPE_NAN)
13234                 return -EOPNOTSUPP;
13235
13236         if (!wdev_running(wdev))
13237                 return -ENOTCONN;
13238
13239         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13240                 return -EINVAL;
13241
13242         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13243                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13244                                           nl80211_nan_func_policy,
13245                                           info->extack);
13246         if (err)
13247                 return err;
13248
13249         func = kzalloc(sizeof(*func), GFP_KERNEL);
13250         if (!func)
13251                 return -ENOMEM;
13252
13253         func->cookie = cfg80211_assign_cookie(rdev);
13254
13255         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13256                 err = -EINVAL;
13257                 goto out;
13258         }
13259
13260
13261         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13262
13263         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13264                 err = -EINVAL;
13265                 goto out;
13266         }
13267
13268         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13269                sizeof(func->service_id));
13270
13271         func->close_range =
13272                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13273
13274         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13275                 func->serv_spec_info_len =
13276                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13277                 func->serv_spec_info =
13278                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13279                                 func->serv_spec_info_len,
13280                                 GFP_KERNEL);
13281                 if (!func->serv_spec_info) {
13282                         err = -ENOMEM;
13283                         goto out;
13284                 }
13285         }
13286
13287         if (tb[NL80211_NAN_FUNC_TTL])
13288                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13289
13290         switch (func->type) {
13291         case NL80211_NAN_FUNC_PUBLISH:
13292                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13293                         err = -EINVAL;
13294                         goto out;
13295                 }
13296
13297                 func->publish_type =
13298                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13299                 func->publish_bcast =
13300                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13301
13302                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13303                         func->publish_bcast) {
13304                         err = -EINVAL;
13305                         goto out;
13306                 }
13307                 break;
13308         case NL80211_NAN_FUNC_SUBSCRIBE:
13309                 func->subscribe_active =
13310                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13311                 break;
13312         case NL80211_NAN_FUNC_FOLLOW_UP:
13313                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13314                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13315                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13316                         err = -EINVAL;
13317                         goto out;
13318                 }
13319
13320                 func->followup_id =
13321                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13322                 func->followup_reqid =
13323                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13324                 memcpy(func->followup_dest.addr,
13325                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13326                        sizeof(func->followup_dest.addr));
13327                 if (func->ttl) {
13328                         err = -EINVAL;
13329                         goto out;
13330                 }
13331                 break;
13332         default:
13333                 err = -EINVAL;
13334                 goto out;
13335         }
13336
13337         if (tb[NL80211_NAN_FUNC_SRF]) {
13338                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13339
13340                 err = nla_parse_nested_deprecated(srf_tb,
13341                                                   NL80211_NAN_SRF_ATTR_MAX,
13342                                                   tb[NL80211_NAN_FUNC_SRF],
13343                                                   nl80211_nan_srf_policy,
13344                                                   info->extack);
13345                 if (err)
13346                         goto out;
13347
13348                 func->srf_include =
13349                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13350
13351                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13352                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13353                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13354                                 err = -EINVAL;
13355                                 goto out;
13356                         }
13357
13358                         func->srf_bf_len =
13359                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13360                         func->srf_bf =
13361                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13362                                         func->srf_bf_len, GFP_KERNEL);
13363                         if (!func->srf_bf) {
13364                                 err = -ENOMEM;
13365                                 goto out;
13366                         }
13367
13368                         func->srf_bf_idx =
13369                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13370                 } else {
13371                         struct nlattr *attr, *mac_attr =
13372                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13373                         int n_entries, rem, i = 0;
13374
13375                         if (!mac_attr) {
13376                                 err = -EINVAL;
13377                                 goto out;
13378                         }
13379
13380                         n_entries = validate_acl_mac_addrs(mac_attr);
13381                         if (n_entries <= 0) {
13382                                 err = -EINVAL;
13383                                 goto out;
13384                         }
13385
13386                         func->srf_num_macs = n_entries;
13387                         func->srf_macs =
13388                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13389                                         GFP_KERNEL);
13390                         if (!func->srf_macs) {
13391                                 err = -ENOMEM;
13392                                 goto out;
13393                         }
13394
13395                         nla_for_each_nested(attr, mac_attr, rem)
13396                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13397                                        sizeof(*func->srf_macs));
13398                 }
13399         }
13400
13401         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13402                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13403                                         func, true);
13404                 if (err)
13405                         goto out;
13406         }
13407
13408         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13409                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13410                                         func, false);
13411                 if (err)
13412                         goto out;
13413         }
13414
13415         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13416         if (!msg) {
13417                 err = -ENOMEM;
13418                 goto out;
13419         }
13420
13421         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13422                              NL80211_CMD_ADD_NAN_FUNCTION);
13423         /* This can't really happen - we just allocated 4KB */
13424         if (WARN_ON(!hdr)) {
13425                 err = -ENOMEM;
13426                 goto out;
13427         }
13428
13429         err = rdev_add_nan_func(rdev, wdev, func);
13430 out:
13431         if (err < 0) {
13432                 cfg80211_free_nan_func(func);
13433                 nlmsg_free(msg);
13434                 return err;
13435         }
13436
13437         /* propagate the instance id and cookie to userspace  */
13438         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13439                               NL80211_ATTR_PAD))
13440                 goto nla_put_failure;
13441
13442         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13443         if (!func_attr)
13444                 goto nla_put_failure;
13445
13446         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13447                        func->instance_id))
13448                 goto nla_put_failure;
13449
13450         nla_nest_end(msg, func_attr);
13451
13452         genlmsg_end(msg, hdr);
13453         return genlmsg_reply(msg, info);
13454
13455 nla_put_failure:
13456         nlmsg_free(msg);
13457         return -ENOBUFS;
13458 }
13459
13460 static int nl80211_nan_del_func(struct sk_buff *skb,
13461                                struct genl_info *info)
13462 {
13463         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13464         struct wireless_dev *wdev = info->user_ptr[1];
13465         u64 cookie;
13466
13467         if (wdev->iftype != NL80211_IFTYPE_NAN)
13468                 return -EOPNOTSUPP;
13469
13470         if (!wdev_running(wdev))
13471                 return -ENOTCONN;
13472
13473         if (!info->attrs[NL80211_ATTR_COOKIE])
13474                 return -EINVAL;
13475
13476         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13477
13478         rdev_del_nan_func(rdev, wdev, cookie);
13479
13480         return 0;
13481 }
13482
13483 static int nl80211_nan_change_config(struct sk_buff *skb,
13484                                      struct genl_info *info)
13485 {
13486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13487         struct wireless_dev *wdev = info->user_ptr[1];
13488         struct cfg80211_nan_conf conf = {};
13489         u32 changed = 0;
13490
13491         if (wdev->iftype != NL80211_IFTYPE_NAN)
13492                 return -EOPNOTSUPP;
13493
13494         if (!wdev_running(wdev))
13495                 return -ENOTCONN;
13496
13497         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13498                 conf.master_pref =
13499                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13500                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13501                         return -EINVAL;
13502
13503                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13504         }
13505
13506         if (info->attrs[NL80211_ATTR_BANDS]) {
13507                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13508
13509                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13510                         return -EOPNOTSUPP;
13511
13512                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13513                         return -EINVAL;
13514
13515                 conf.bands = bands;
13516                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13517         }
13518
13519         if (!changed)
13520                 return -EINVAL;
13521
13522         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13523 }
13524
13525 void cfg80211_nan_match(struct wireless_dev *wdev,
13526                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13527 {
13528         struct wiphy *wiphy = wdev->wiphy;
13529         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13530         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13531         struct sk_buff *msg;
13532         void *hdr;
13533
13534         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13535                 return;
13536
13537         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13538         if (!msg)
13539                 return;
13540
13541         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13542         if (!hdr) {
13543                 nlmsg_free(msg);
13544                 return;
13545         }
13546
13547         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13548             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13549                                          wdev->netdev->ifindex)) ||
13550             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13551                               NL80211_ATTR_PAD))
13552                 goto nla_put_failure;
13553
13554         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13555                               NL80211_ATTR_PAD) ||
13556             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13557                 goto nla_put_failure;
13558
13559         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13560         if (!match_attr)
13561                 goto nla_put_failure;
13562
13563         local_func_attr = nla_nest_start_noflag(msg,
13564                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13565         if (!local_func_attr)
13566                 goto nla_put_failure;
13567
13568         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13569                 goto nla_put_failure;
13570
13571         nla_nest_end(msg, local_func_attr);
13572
13573         peer_func_attr = nla_nest_start_noflag(msg,
13574                                                NL80211_NAN_MATCH_FUNC_PEER);
13575         if (!peer_func_attr)
13576                 goto nla_put_failure;
13577
13578         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13579             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13580                 goto nla_put_failure;
13581
13582         if (match->info && match->info_len &&
13583             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13584                     match->info))
13585                 goto nla_put_failure;
13586
13587         nla_nest_end(msg, peer_func_attr);
13588         nla_nest_end(msg, match_attr);
13589         genlmsg_end(msg, hdr);
13590
13591         if (!wdev->owner_nlportid)
13592                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13593                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13594         else
13595                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13596                                 wdev->owner_nlportid);
13597
13598         return;
13599
13600 nla_put_failure:
13601         nlmsg_free(msg);
13602 }
13603 EXPORT_SYMBOL(cfg80211_nan_match);
13604
13605 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13606                                   u8 inst_id,
13607                                   enum nl80211_nan_func_term_reason reason,
13608                                   u64 cookie, gfp_t gfp)
13609 {
13610         struct wiphy *wiphy = wdev->wiphy;
13611         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13612         struct sk_buff *msg;
13613         struct nlattr *func_attr;
13614         void *hdr;
13615
13616         if (WARN_ON(!inst_id))
13617                 return;
13618
13619         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13620         if (!msg)
13621                 return;
13622
13623         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13624         if (!hdr) {
13625                 nlmsg_free(msg);
13626                 return;
13627         }
13628
13629         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13630             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13631                                          wdev->netdev->ifindex)) ||
13632             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13633                               NL80211_ATTR_PAD))
13634                 goto nla_put_failure;
13635
13636         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13637                               NL80211_ATTR_PAD))
13638                 goto nla_put_failure;
13639
13640         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13641         if (!func_attr)
13642                 goto nla_put_failure;
13643
13644         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13645             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13646                 goto nla_put_failure;
13647
13648         nla_nest_end(msg, func_attr);
13649         genlmsg_end(msg, hdr);
13650
13651         if (!wdev->owner_nlportid)
13652                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13653                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13654         else
13655                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13656                                 wdev->owner_nlportid);
13657
13658         return;
13659
13660 nla_put_failure:
13661         nlmsg_free(msg);
13662 }
13663 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13664
13665 static int nl80211_get_protocol_features(struct sk_buff *skb,
13666                                          struct genl_info *info)
13667 {
13668         void *hdr;
13669         struct sk_buff *msg;
13670
13671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13672         if (!msg)
13673                 return -ENOMEM;
13674
13675         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13676                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13677         if (!hdr)
13678                 goto nla_put_failure;
13679
13680         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13681                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13682                 goto nla_put_failure;
13683
13684         genlmsg_end(msg, hdr);
13685         return genlmsg_reply(msg, info);
13686
13687  nla_put_failure:
13688         kfree_skb(msg);
13689         return -ENOBUFS;
13690 }
13691
13692 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13693 {
13694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13695         struct cfg80211_update_ft_ies_params ft_params;
13696         struct net_device *dev = info->user_ptr[1];
13697
13698         if (!rdev->ops->update_ft_ies)
13699                 return -EOPNOTSUPP;
13700
13701         if (!info->attrs[NL80211_ATTR_MDID] ||
13702             !info->attrs[NL80211_ATTR_IE])
13703                 return -EINVAL;
13704
13705         memset(&ft_params, 0, sizeof(ft_params));
13706         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13707         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13708         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13709
13710         return rdev_update_ft_ies(rdev, dev, &ft_params);
13711 }
13712
13713 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13714                                        struct genl_info *info)
13715 {
13716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13717         struct wireless_dev *wdev = info->user_ptr[1];
13718         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13719         u16 duration;
13720         int ret;
13721
13722         if (!rdev->ops->crit_proto_start)
13723                 return -EOPNOTSUPP;
13724
13725         if (WARN_ON(!rdev->ops->crit_proto_stop))
13726                 return -EINVAL;
13727
13728         if (rdev->crit_proto_nlportid)
13729                 return -EBUSY;
13730
13731         /* determine protocol if provided */
13732         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13733                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13734
13735         if (proto >= NUM_NL80211_CRIT_PROTO)
13736                 return -EINVAL;
13737
13738         /* timeout must be provided */
13739         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13740                 return -EINVAL;
13741
13742         duration =
13743                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13744
13745         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13746         if (!ret)
13747                 rdev->crit_proto_nlportid = info->snd_portid;
13748
13749         return ret;
13750 }
13751
13752 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13753                                       struct genl_info *info)
13754 {
13755         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13756         struct wireless_dev *wdev = info->user_ptr[1];
13757
13758         if (!rdev->ops->crit_proto_stop)
13759                 return -EOPNOTSUPP;
13760
13761         if (rdev->crit_proto_nlportid) {
13762                 rdev->crit_proto_nlportid = 0;
13763                 rdev_crit_proto_stop(rdev, wdev);
13764         }
13765         return 0;
13766 }
13767
13768 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13769                                        struct nlattr *attr,
13770                                        struct netlink_ext_ack *extack)
13771 {
13772         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13773                 if (attr->nla_type & NLA_F_NESTED) {
13774                         NL_SET_ERR_MSG_ATTR(extack, attr,
13775                                             "unexpected nested data");
13776                         return -EINVAL;
13777                 }
13778
13779                 return 0;
13780         }
13781
13782         if (!(attr->nla_type & NLA_F_NESTED)) {
13783                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13784                 return -EINVAL;
13785         }
13786
13787         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13788 }
13789
13790 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13791 {
13792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13793         struct wireless_dev *wdev =
13794                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
13795                                            info->attrs);
13796         int i, err;
13797         u32 vid, subcmd;
13798
13799         if (!rdev->wiphy.vendor_commands)
13800                 return -EOPNOTSUPP;
13801
13802         if (IS_ERR(wdev)) {
13803                 err = PTR_ERR(wdev);
13804                 if (err != -EINVAL)
13805                         return err;
13806                 wdev = NULL;
13807         } else if (wdev->wiphy != &rdev->wiphy) {
13808                 return -EINVAL;
13809         }
13810
13811         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13812             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13813                 return -EINVAL;
13814
13815         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13816         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13817         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13818                 const struct wiphy_vendor_command *vcmd;
13819                 void *data = NULL;
13820                 int len = 0;
13821
13822                 vcmd = &rdev->wiphy.vendor_commands[i];
13823
13824                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13825                         continue;
13826
13827                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13828                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13829                         if (!wdev)
13830                                 return -EINVAL;
13831                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13832                             !wdev->netdev)
13833                                 return -EINVAL;
13834
13835                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13836                                 if (!wdev_running(wdev))
13837                                         return -ENETDOWN;
13838                         }
13839                 } else {
13840                         wdev = NULL;
13841                 }
13842
13843                 if (!vcmd->doit)
13844                         return -EOPNOTSUPP;
13845
13846                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13847                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13848                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13849
13850                         err = nl80211_vendor_check_policy(vcmd,
13851                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13852                                         info->extack);
13853                         if (err)
13854                                 return err;
13855                 }
13856
13857                 rdev->cur_cmd_info = info;
13858                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13859                 rdev->cur_cmd_info = NULL;
13860                 return err;
13861         }
13862
13863         return -EOPNOTSUPP;
13864 }
13865
13866 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13867                                        struct netlink_callback *cb,
13868                                        struct cfg80211_registered_device **rdev,
13869                                        struct wireless_dev **wdev)
13870 {
13871         struct nlattr **attrbuf;
13872         u32 vid, subcmd;
13873         unsigned int i;
13874         int vcmd_idx = -1;
13875         int err;
13876         void *data = NULL;
13877         unsigned int data_len = 0;
13878
13879         if (cb->args[0]) {
13880                 /* subtract the 1 again here */
13881                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13882                 struct wireless_dev *tmp;
13883
13884                 if (!wiphy)
13885                         return -ENODEV;
13886                 *rdev = wiphy_to_rdev(wiphy);
13887                 *wdev = NULL;
13888
13889                 if (cb->args[1]) {
13890                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13891                                 if (tmp->identifier == cb->args[1] - 1) {
13892                                         *wdev = tmp;
13893                                         break;
13894                                 }
13895                         }
13896                 }
13897
13898                 /* keep rtnl locked in successful case */
13899                 return 0;
13900         }
13901
13902         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13903         if (!attrbuf)
13904                 return -ENOMEM;
13905
13906         err = nlmsg_parse_deprecated(cb->nlh,
13907                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13908                                      attrbuf, nl80211_fam.maxattr,
13909                                      nl80211_policy, NULL);
13910         if (err)
13911                 goto out;
13912
13913         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13914             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13915                 err = -EINVAL;
13916                 goto out;
13917         }
13918
13919         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
13920         if (IS_ERR(*wdev))
13921                 *wdev = NULL;
13922
13923         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13924         if (IS_ERR(*rdev)) {
13925                 err = PTR_ERR(*rdev);
13926                 goto out;
13927         }
13928
13929         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13930         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13931
13932         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13933                 const struct wiphy_vendor_command *vcmd;
13934
13935                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13936
13937                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13938                         continue;
13939
13940                 if (!vcmd->dumpit) {
13941                         err = -EOPNOTSUPP;
13942                         goto out;
13943                 }
13944
13945                 vcmd_idx = i;
13946                 break;
13947         }
13948
13949         if (vcmd_idx < 0) {
13950                 err = -EOPNOTSUPP;
13951                 goto out;
13952         }
13953
13954         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13955                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13956                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13957
13958                 err = nl80211_vendor_check_policy(
13959                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13960                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13961                                 cb->extack);
13962                 if (err)
13963                         goto out;
13964         }
13965
13966         /* 0 is the first index - add 1 to parse only once */
13967         cb->args[0] = (*rdev)->wiphy_idx + 1;
13968         /* add 1 to know if it was NULL */
13969         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13970         cb->args[2] = vcmd_idx;
13971         cb->args[3] = (unsigned long)data;
13972         cb->args[4] = data_len;
13973
13974         /* keep rtnl locked in successful case */
13975         err = 0;
13976 out:
13977         kfree(attrbuf);
13978         return err;
13979 }
13980
13981 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13982                                    struct netlink_callback *cb)
13983 {
13984         struct cfg80211_registered_device *rdev;
13985         struct wireless_dev *wdev;
13986         unsigned int vcmd_idx;
13987         const struct wiphy_vendor_command *vcmd;
13988         void *data;
13989         int data_len;
13990         int err;
13991         struct nlattr *vendor_data;
13992
13993         rtnl_lock();
13994         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13995         if (err)
13996                 goto out;
13997
13998         vcmd_idx = cb->args[2];
13999         data = (void *)cb->args[3];
14000         data_len = cb->args[4];
14001         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14002
14003         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14004                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14005                 if (!wdev) {
14006                         err = -EINVAL;
14007                         goto out;
14008                 }
14009                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14010                     !wdev->netdev) {
14011                         err = -EINVAL;
14012                         goto out;
14013                 }
14014
14015                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14016                         if (!wdev_running(wdev)) {
14017                                 err = -ENETDOWN;
14018                                 goto out;
14019                         }
14020                 }
14021         }
14022
14023         while (1) {
14024                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
14025                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
14026                                            NL80211_CMD_VENDOR);
14027                 if (!hdr)
14028                         break;
14029
14030                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14031                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
14032                                                wdev_id(wdev),
14033                                                NL80211_ATTR_PAD))) {
14034                         genlmsg_cancel(skb, hdr);
14035                         break;
14036                 }
14037
14038                 vendor_data = nla_nest_start_noflag(skb,
14039                                                     NL80211_ATTR_VENDOR_DATA);
14040                 if (!vendor_data) {
14041                         genlmsg_cancel(skb, hdr);
14042                         break;
14043                 }
14044
14045                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14046                                    (unsigned long *)&cb->args[5]);
14047                 nla_nest_end(skb, vendor_data);
14048
14049                 if (err == -ENOBUFS || err == -ENOENT) {
14050                         genlmsg_cancel(skb, hdr);
14051                         break;
14052                 } else if (err <= 0) {
14053                         genlmsg_cancel(skb, hdr);
14054                         goto out;
14055                 }
14056
14057                 genlmsg_end(skb, hdr);
14058         }
14059
14060         err = skb->len;
14061  out:
14062         rtnl_unlock();
14063         return err;
14064 }
14065
14066 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14067                                            enum nl80211_commands cmd,
14068                                            enum nl80211_attrs attr,
14069                                            int approxlen)
14070 {
14071         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14072
14073         if (WARN_ON(!rdev->cur_cmd_info))
14074                 return NULL;
14075
14076         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14077                                            rdev->cur_cmd_info->snd_portid,
14078                                            rdev->cur_cmd_info->snd_seq,
14079                                            cmd, attr, NULL, GFP_KERNEL);
14080 }
14081 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14082
14083 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14084 {
14085         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14086         void *hdr = ((void **)skb->cb)[1];
14087         struct nlattr *data = ((void **)skb->cb)[2];
14088
14089         /* clear CB data for netlink core to own from now on */
14090         memset(skb->cb, 0, sizeof(skb->cb));
14091
14092         if (WARN_ON(!rdev->cur_cmd_info)) {
14093                 kfree_skb(skb);
14094                 return -EINVAL;
14095         }
14096
14097         nla_nest_end(skb, data);
14098         genlmsg_end(skb, hdr);
14099         return genlmsg_reply(skb, rdev->cur_cmd_info);
14100 }
14101 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14102
14103 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14104 {
14105         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14106
14107         if (WARN_ON(!rdev->cur_cmd_info))
14108                 return 0;
14109
14110         return rdev->cur_cmd_info->snd_portid;
14111 }
14112 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14113
14114 static int nl80211_set_qos_map(struct sk_buff *skb,
14115                                struct genl_info *info)
14116 {
14117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14118         struct cfg80211_qos_map *qos_map = NULL;
14119         struct net_device *dev = info->user_ptr[1];
14120         u8 *pos, len, num_des, des_len, des;
14121         int ret;
14122
14123         if (!rdev->ops->set_qos_map)
14124                 return -EOPNOTSUPP;
14125
14126         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14127                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14128                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14129
14130                 if (len % 2)
14131                         return -EINVAL;
14132
14133                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14134                 if (!qos_map)
14135                         return -ENOMEM;
14136
14137                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14138                 if (num_des) {
14139                         des_len = num_des *
14140                                 sizeof(struct cfg80211_dscp_exception);
14141                         memcpy(qos_map->dscp_exception, pos, des_len);
14142                         qos_map->num_des = num_des;
14143                         for (des = 0; des < num_des; des++) {
14144                                 if (qos_map->dscp_exception[des].up > 7) {
14145                                         kfree(qos_map);
14146                                         return -EINVAL;
14147                                 }
14148                         }
14149                         pos += des_len;
14150                 }
14151                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14152         }
14153
14154         wdev_lock(dev->ieee80211_ptr);
14155         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14156         if (!ret)
14157                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14158         wdev_unlock(dev->ieee80211_ptr);
14159
14160         kfree(qos_map);
14161         return ret;
14162 }
14163
14164 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14165 {
14166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14167         struct net_device *dev = info->user_ptr[1];
14168         struct wireless_dev *wdev = dev->ieee80211_ptr;
14169         const u8 *peer;
14170         u8 tsid, up;
14171         u16 admitted_time = 0;
14172         int err;
14173
14174         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14175                 return -EOPNOTSUPP;
14176
14177         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14178             !info->attrs[NL80211_ATTR_USER_PRIO])
14179                 return -EINVAL;
14180
14181         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14182         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14183
14184         /* WMM uses TIDs 0-7 even for TSPEC */
14185         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14186                 /* TODO: handle 802.11 TSPEC/admission control
14187                  * need more attributes for that (e.g. BA session requirement);
14188                  * change the WMM adminssion test above to allow both then
14189                  */
14190                 return -EINVAL;
14191         }
14192
14193         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14194
14195         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14196                 admitted_time =
14197                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14198                 if (!admitted_time)
14199                         return -EINVAL;
14200         }
14201
14202         wdev_lock(wdev);
14203         switch (wdev->iftype) {
14204         case NL80211_IFTYPE_STATION:
14205         case NL80211_IFTYPE_P2P_CLIENT:
14206                 if (wdev->current_bss)
14207                         break;
14208                 err = -ENOTCONN;
14209                 goto out;
14210         default:
14211                 err = -EOPNOTSUPP;
14212                 goto out;
14213         }
14214
14215         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14216
14217  out:
14218         wdev_unlock(wdev);
14219         return err;
14220 }
14221
14222 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14223 {
14224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14225         struct net_device *dev = info->user_ptr[1];
14226         struct wireless_dev *wdev = dev->ieee80211_ptr;
14227         const u8 *peer;
14228         u8 tsid;
14229         int err;
14230
14231         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14232                 return -EINVAL;
14233
14234         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14235         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14236
14237         wdev_lock(wdev);
14238         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14239         wdev_unlock(wdev);
14240
14241         return err;
14242 }
14243
14244 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14245                                        struct genl_info *info)
14246 {
14247         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14248         struct net_device *dev = info->user_ptr[1];
14249         struct wireless_dev *wdev = dev->ieee80211_ptr;
14250         struct cfg80211_chan_def chandef = {};
14251         const u8 *addr;
14252         u8 oper_class;
14253         int err;
14254
14255         if (!rdev->ops->tdls_channel_switch ||
14256             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14257                 return -EOPNOTSUPP;
14258
14259         switch (dev->ieee80211_ptr->iftype) {
14260         case NL80211_IFTYPE_STATION:
14261         case NL80211_IFTYPE_P2P_CLIENT:
14262                 break;
14263         default:
14264                 return -EOPNOTSUPP;
14265         }
14266
14267         if (!info->attrs[NL80211_ATTR_MAC] ||
14268             !info->attrs[NL80211_ATTR_OPER_CLASS])
14269                 return -EINVAL;
14270
14271         err = nl80211_parse_chandef(rdev, info, &chandef);
14272         if (err)
14273                 return err;
14274
14275         /*
14276          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14277          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14278          * specification is not defined for them.
14279          */
14280         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14281             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14282             chandef.width != NL80211_CHAN_WIDTH_20)
14283                 return -EINVAL;
14284
14285         /* we will be active on the TDLS link */
14286         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14287                                            wdev->iftype))
14288                 return -EINVAL;
14289
14290         /* don't allow switching to DFS channels */
14291         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14292                 return -EINVAL;
14293
14294         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14295         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14296
14297         wdev_lock(wdev);
14298         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14299         wdev_unlock(wdev);
14300
14301         return err;
14302 }
14303
14304 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14305                                               struct genl_info *info)
14306 {
14307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14308         struct net_device *dev = info->user_ptr[1];
14309         struct wireless_dev *wdev = dev->ieee80211_ptr;
14310         const u8 *addr;
14311
14312         if (!rdev->ops->tdls_channel_switch ||
14313             !rdev->ops->tdls_cancel_channel_switch ||
14314             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14315                 return -EOPNOTSUPP;
14316
14317         switch (dev->ieee80211_ptr->iftype) {
14318         case NL80211_IFTYPE_STATION:
14319         case NL80211_IFTYPE_P2P_CLIENT:
14320                 break;
14321         default:
14322                 return -EOPNOTSUPP;
14323         }
14324
14325         if (!info->attrs[NL80211_ATTR_MAC])
14326                 return -EINVAL;
14327
14328         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14329
14330         wdev_lock(wdev);
14331         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14332         wdev_unlock(wdev);
14333
14334         return 0;
14335 }
14336
14337 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14338                                             struct genl_info *info)
14339 {
14340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14341         struct net_device *dev = info->user_ptr[1];
14342         struct wireless_dev *wdev = dev->ieee80211_ptr;
14343         const struct nlattr *nla;
14344         bool enabled;
14345
14346         if (!rdev->ops->set_multicast_to_unicast)
14347                 return -EOPNOTSUPP;
14348
14349         if (wdev->iftype != NL80211_IFTYPE_AP &&
14350             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14351                 return -EOPNOTSUPP;
14352
14353         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14354         enabled = nla_get_flag(nla);
14355
14356         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14357 }
14358
14359 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14360 {
14361         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14362         struct net_device *dev = info->user_ptr[1];
14363         struct wireless_dev *wdev = dev->ieee80211_ptr;
14364         struct cfg80211_pmk_conf pmk_conf = {};
14365         int ret;
14366
14367         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14368             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14369                 return -EOPNOTSUPP;
14370
14371         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14372                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14373                 return -EOPNOTSUPP;
14374
14375         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14376                 return -EINVAL;
14377
14378         wdev_lock(wdev);
14379         if (!wdev->current_bss) {
14380                 ret = -ENOTCONN;
14381                 goto out;
14382         }
14383
14384         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14385         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14386                 ret = -EINVAL;
14387                 goto out;
14388         }
14389
14390         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14391         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14392         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14393             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14394                 ret = -EINVAL;
14395                 goto out;
14396         }
14397
14398         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14399                 pmk_conf.pmk_r0_name =
14400                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14401
14402         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14403 out:
14404         wdev_unlock(wdev);
14405         return ret;
14406 }
14407
14408 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14409 {
14410         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14411         struct net_device *dev = info->user_ptr[1];
14412         struct wireless_dev *wdev = dev->ieee80211_ptr;
14413         const u8 *aa;
14414         int ret;
14415
14416         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14417             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14418                 return -EOPNOTSUPP;
14419
14420         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14421                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14422                 return -EOPNOTSUPP;
14423
14424         if (!info->attrs[NL80211_ATTR_MAC])
14425                 return -EINVAL;
14426
14427         wdev_lock(wdev);
14428         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14429         ret = rdev_del_pmk(rdev, dev, aa);
14430         wdev_unlock(wdev);
14431
14432         return ret;
14433 }
14434
14435 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14436 {
14437         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14438         struct net_device *dev = info->user_ptr[1];
14439         struct cfg80211_external_auth_params params;
14440
14441         if (!rdev->ops->external_auth)
14442                 return -EOPNOTSUPP;
14443
14444         if (!info->attrs[NL80211_ATTR_SSID] &&
14445             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14446             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14447                 return -EINVAL;
14448
14449         if (!info->attrs[NL80211_ATTR_BSSID])
14450                 return -EINVAL;
14451
14452         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14453                 return -EINVAL;
14454
14455         memset(&params, 0, sizeof(params));
14456
14457         if (info->attrs[NL80211_ATTR_SSID]) {
14458                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14459                 if (params.ssid.ssid_len == 0)
14460                         return -EINVAL;
14461                 memcpy(params.ssid.ssid,
14462                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14463                        params.ssid.ssid_len);
14464         }
14465
14466         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14467                ETH_ALEN);
14468
14469         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14470
14471         if (info->attrs[NL80211_ATTR_PMKID])
14472                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14473
14474         return rdev_external_auth(rdev, dev, &params);
14475 }
14476
14477 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14478 {
14479         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14481         struct net_device *dev = info->user_ptr[1];
14482         struct wireless_dev *wdev = dev->ieee80211_ptr;
14483         const u8 *buf;
14484         size_t len;
14485         u8 *dest;
14486         u16 proto;
14487         bool noencrypt;
14488         u64 cookie = 0;
14489         int err;
14490
14491         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14492                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14493                 return -EOPNOTSUPP;
14494
14495         if (!rdev->ops->tx_control_port)
14496                 return -EOPNOTSUPP;
14497
14498         if (!info->attrs[NL80211_ATTR_FRAME] ||
14499             !info->attrs[NL80211_ATTR_MAC] ||
14500             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14501                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14502                 return -EINVAL;
14503         }
14504
14505         wdev_lock(wdev);
14506
14507         switch (wdev->iftype) {
14508         case NL80211_IFTYPE_AP:
14509         case NL80211_IFTYPE_P2P_GO:
14510         case NL80211_IFTYPE_MESH_POINT:
14511                 break;
14512         case NL80211_IFTYPE_ADHOC:
14513         case NL80211_IFTYPE_STATION:
14514         case NL80211_IFTYPE_P2P_CLIENT:
14515                 if (wdev->current_bss)
14516                         break;
14517                 err = -ENOTCONN;
14518                 goto out;
14519         default:
14520                 err = -EOPNOTSUPP;
14521                 goto out;
14522         }
14523
14524         wdev_unlock(wdev);
14525
14526         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14527         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14528         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14529         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14530         noencrypt =
14531                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14532
14533         err = rdev_tx_control_port(rdev, dev, buf, len,
14534                                    dest, cpu_to_be16(proto), noencrypt,
14535                                    dont_wait_for_ack ? NULL : &cookie);
14536         if (!err && !dont_wait_for_ack)
14537                 nl_set_extack_cookie_u64(info->extack, cookie);
14538         return err;
14539  out:
14540         wdev_unlock(wdev);
14541         return err;
14542 }
14543
14544 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14545                                            struct genl_info *info)
14546 {
14547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14548         struct net_device *dev = info->user_ptr[1];
14549         struct wireless_dev *wdev = dev->ieee80211_ptr;
14550         struct cfg80211_ftm_responder_stats ftm_stats = {};
14551         struct sk_buff *msg;
14552         void *hdr;
14553         struct nlattr *ftm_stats_attr;
14554         int err;
14555
14556         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14557                 return -EOPNOTSUPP;
14558
14559         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14560         if (err)
14561                 return err;
14562
14563         if (!ftm_stats.filled)
14564                 return -ENODATA;
14565
14566         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14567         if (!msg)
14568                 return -ENOMEM;
14569
14570         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14571                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14572         if (!hdr)
14573                 goto nla_put_failure;
14574
14575         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14576                 goto nla_put_failure;
14577
14578         ftm_stats_attr = nla_nest_start_noflag(msg,
14579                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14580         if (!ftm_stats_attr)
14581                 goto nla_put_failure;
14582
14583 #define SET_FTM(field, name, type)                                       \
14584         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14585             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14586                              ftm_stats.field))                           \
14587                 goto nla_put_failure; } while (0)
14588 #define SET_FTM_U64(field, name)                                         \
14589         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14590             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14591                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14592                 goto nla_put_failure; } while (0)
14593
14594         SET_FTM(success_num, SUCCESS_NUM, u32);
14595         SET_FTM(partial_num, PARTIAL_NUM, u32);
14596         SET_FTM(failed_num, FAILED_NUM, u32);
14597         SET_FTM(asap_num, ASAP_NUM, u32);
14598         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14599         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14600         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14601         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14602         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14603 #undef SET_FTM
14604
14605         nla_nest_end(msg, ftm_stats_attr);
14606
14607         genlmsg_end(msg, hdr);
14608         return genlmsg_reply(msg, info);
14609
14610 nla_put_failure:
14611         nlmsg_free(msg);
14612         return -ENOBUFS;
14613 }
14614
14615 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14616 {
14617         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14618         struct cfg80211_update_owe_info owe_info;
14619         struct net_device *dev = info->user_ptr[1];
14620
14621         if (!rdev->ops->update_owe_info)
14622                 return -EOPNOTSUPP;
14623
14624         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14625             !info->attrs[NL80211_ATTR_MAC])
14626                 return -EINVAL;
14627
14628         memset(&owe_info, 0, sizeof(owe_info));
14629         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14630         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14631
14632         if (info->attrs[NL80211_ATTR_IE]) {
14633                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14634                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14635         }
14636
14637         return rdev_update_owe_info(rdev, dev, &owe_info);
14638 }
14639
14640 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14641 {
14642         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14643         struct net_device *dev = info->user_ptr[1];
14644         struct wireless_dev *wdev = dev->ieee80211_ptr;
14645         struct station_info sinfo = {};
14646         const u8 *buf;
14647         size_t len;
14648         u8 *dest;
14649         int err;
14650
14651         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14652                 return -EOPNOTSUPP;
14653
14654         if (!info->attrs[NL80211_ATTR_MAC] ||
14655             !info->attrs[NL80211_ATTR_FRAME]) {
14656                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14657                 return -EINVAL;
14658         }
14659
14660         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14661                 return -EOPNOTSUPP;
14662
14663         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14664         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14665         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14666
14667         if (len < sizeof(struct ethhdr))
14668                 return -EINVAL;
14669
14670         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14671             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14672                 return -EINVAL;
14673
14674         err = rdev_get_station(rdev, dev, dest, &sinfo);
14675         if (err)
14676                 return err;
14677
14678         cfg80211_sinfo_release_content(&sinfo);
14679
14680         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14681 }
14682
14683 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14684                           struct nlattr *attrs[], struct net_device *dev,
14685                           struct cfg80211_tid_cfg *tid_conf,
14686                           struct genl_info *info, const u8 *peer)
14687 {
14688         struct netlink_ext_ack *extack = info->extack;
14689         u64 mask;
14690         int err;
14691
14692         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14693                 return -EINVAL;
14694
14695         tid_conf->config_override =
14696                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14697         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14698
14699         if (tid_conf->config_override) {
14700                 if (rdev->ops->reset_tid_config) {
14701                         err = rdev_reset_tid_config(rdev, dev, peer,
14702                                                     tid_conf->tids);
14703                         if (err)
14704                                 return err;
14705                 } else {
14706                         return -EINVAL;
14707                 }
14708         }
14709
14710         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14711                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14712                 tid_conf->noack =
14713                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14714         }
14715
14716         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14717                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14718                 tid_conf->retry_short =
14719                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14720
14721                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14722                         return -EINVAL;
14723         }
14724
14725         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14726                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14727                 tid_conf->retry_long =
14728                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14729
14730                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14731                         return -EINVAL;
14732         }
14733
14734         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14735                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14736                 tid_conf->ampdu =
14737                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14738         }
14739
14740         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14741                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14742                 tid_conf->rtscts =
14743                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14744         }
14745
14746         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14747                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14748                 tid_conf->amsdu =
14749                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14750         }
14751
14752         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14753                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14754
14755                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14756
14757                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14758                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14759                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14760                                                     &tid_conf->txrate_mask, dev,
14761                                                     true);
14762                         if (err)
14763                                 return err;
14764
14765                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14766                 }
14767                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14768         }
14769
14770         if (peer)
14771                 mask = rdev->wiphy.tid_config_support.peer;
14772         else
14773                 mask = rdev->wiphy.tid_config_support.vif;
14774
14775         if (tid_conf->mask & ~mask) {
14776                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14777                 return -ENOTSUPP;
14778         }
14779
14780         return 0;
14781 }
14782
14783 static int nl80211_set_tid_config(struct sk_buff *skb,
14784                                   struct genl_info *info)
14785 {
14786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14787         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14788         struct net_device *dev = info->user_ptr[1];
14789         struct cfg80211_tid_config *tid_config;
14790         struct nlattr *tid;
14791         int conf_idx = 0, rem_conf;
14792         int ret = -EINVAL;
14793         u32 num_conf = 0;
14794
14795         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14796                 return -EINVAL;
14797
14798         if (!rdev->ops->set_tid_config)
14799                 return -EOPNOTSUPP;
14800
14801         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14802                             rem_conf)
14803                 num_conf++;
14804
14805         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14806                              GFP_KERNEL);
14807         if (!tid_config)
14808                 return -ENOMEM;
14809
14810         tid_config->n_tid_conf = num_conf;
14811
14812         if (info->attrs[NL80211_ATTR_MAC])
14813                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14814
14815         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14816                             rem_conf) {
14817                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14818                                        tid, NULL, NULL);
14819
14820                 if (ret)
14821                         goto bad_tid_conf;
14822
14823                 ret = parse_tid_conf(rdev, attrs, dev,
14824                                      &tid_config->tid_conf[conf_idx],
14825                                      info, tid_config->peer);
14826                 if (ret)
14827                         goto bad_tid_conf;
14828
14829                 conf_idx++;
14830         }
14831
14832         ret = rdev_set_tid_config(rdev, dev, tid_config);
14833
14834 bad_tid_conf:
14835         kfree(tid_config);
14836         return ret;
14837 }
14838
14839 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
14840 {
14841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14842         struct cfg80211_color_change_settings params = {};
14843         struct net_device *dev = info->user_ptr[1];
14844         struct wireless_dev *wdev = dev->ieee80211_ptr;
14845         struct nlattr **tb;
14846         u16 offset;
14847         int err;
14848
14849         if (!rdev->ops->color_change)
14850                 return -EOPNOTSUPP;
14851
14852         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14853                                      NL80211_EXT_FEATURE_BSS_COLOR))
14854                 return -EOPNOTSUPP;
14855
14856         if (wdev->iftype != NL80211_IFTYPE_AP)
14857                 return -EOPNOTSUPP;
14858
14859         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
14860             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
14861             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
14862                 return -EINVAL;
14863
14864         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
14865         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
14866
14867         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next);
14868         if (err)
14869                 return err;
14870
14871         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
14872         if (!tb)
14873                 return -ENOMEM;
14874
14875         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
14876                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
14877                                nl80211_policy, info->extack);
14878         if (err)
14879                 goto out;
14880
14881         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change);
14882         if (err)
14883                 goto out;
14884
14885         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
14886                 err = -EINVAL;
14887                 goto out;
14888         }
14889
14890         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
14891                 err = -EINVAL;
14892                 goto out;
14893         }
14894
14895         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
14896         if (offset >= params.beacon_color_change.tail_len) {
14897                 err = -EINVAL;
14898                 goto out;
14899         }
14900
14901         if (params.beacon_color_change.tail[offset] != params.count) {
14902                 err = -EINVAL;
14903                 goto out;
14904         }
14905
14906         params.counter_offset_beacon = offset;
14907
14908         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
14909                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
14910                     sizeof(u16)) {
14911                         err = -EINVAL;
14912                         goto out;
14913                 }
14914
14915                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
14916                 if (offset >= params.beacon_color_change.probe_resp_len) {
14917                         err = -EINVAL;
14918                         goto out;
14919                 }
14920
14921                 if (params.beacon_color_change.probe_resp[offset] !=
14922                     params.count) {
14923                         err = -EINVAL;
14924                         goto out;
14925                 }
14926
14927                 params.counter_offset_presp = offset;
14928         }
14929
14930         wdev_lock(wdev);
14931         err = rdev_color_change(rdev, dev, &params);
14932         wdev_unlock(wdev);
14933
14934 out:
14935         kfree(tb);
14936         return err;
14937 }
14938
14939 #define NL80211_FLAG_NEED_WIPHY         0x01
14940 #define NL80211_FLAG_NEED_NETDEV        0x02
14941 #define NL80211_FLAG_NEED_RTNL          0x04
14942 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14943 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14944                                          NL80211_FLAG_CHECK_NETDEV_UP)
14945 #define NL80211_FLAG_NEED_WDEV          0x10
14946 /* If a netdev is associated, it must be UP, P2P must be started */
14947 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14948                                          NL80211_FLAG_CHECK_NETDEV_UP)
14949 #define NL80211_FLAG_CLEAR_SKB          0x20
14950 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
14951
14952 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14953                             struct genl_info *info)
14954 {
14955         struct cfg80211_registered_device *rdev = NULL;
14956         struct wireless_dev *wdev;
14957         struct net_device *dev;
14958
14959         rtnl_lock();
14960         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14961                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14962                 if (IS_ERR(rdev)) {
14963                         rtnl_unlock();
14964                         return PTR_ERR(rdev);
14965                 }
14966                 info->user_ptr[0] = rdev;
14967         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14968                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14969                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
14970                                                   info->attrs);
14971                 if (IS_ERR(wdev)) {
14972                         rtnl_unlock();
14973                         return PTR_ERR(wdev);
14974                 }
14975
14976                 dev = wdev->netdev;
14977                 rdev = wiphy_to_rdev(wdev->wiphy);
14978
14979                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14980                         if (!dev) {
14981                                 rtnl_unlock();
14982                                 return -EINVAL;
14983                         }
14984
14985                         info->user_ptr[1] = dev;
14986                 } else {
14987                         info->user_ptr[1] = wdev;
14988                 }
14989
14990                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14991                     !wdev_running(wdev)) {
14992                         rtnl_unlock();
14993                         return -ENETDOWN;
14994                 }
14995
14996                 dev_hold(dev);
14997                 info->user_ptr[0] = rdev;
14998         }
14999
15000         if (rdev && !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
15001                 wiphy_lock(&rdev->wiphy);
15002                 /* we keep the mutex locked until post_doit */
15003                 __release(&rdev->wiphy.mtx);
15004         }
15005         if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
15006                 rtnl_unlock();
15007
15008         return 0;
15009 }
15010
15011 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
15012                               struct genl_info *info)
15013 {
15014         if (info->user_ptr[1]) {
15015                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
15016                         struct wireless_dev *wdev = info->user_ptr[1];
15017
15018                         dev_put(wdev->netdev);
15019                 } else {
15020                         dev_put(info->user_ptr[1]);
15021                 }
15022         }
15023
15024         if (info->user_ptr[0] &&
15025             !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
15026                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15027
15028                 /* we kept the mutex locked since pre_doit */
15029                 __acquire(&rdev->wiphy.mtx);
15030                 wiphy_unlock(&rdev->wiphy);
15031         }
15032
15033         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
15034                 rtnl_unlock();
15035
15036         /* If needed, clear the netlink message payload from the SKB
15037          * as it might contain key data that shouldn't stick around on
15038          * the heap after the SKB is freed. The netlink message header
15039          * is still needed for further processing, so leave it intact.
15040          */
15041         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
15042                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
15043
15044                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
15045         }
15046 }
15047
15048 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
15049                                      struct cfg80211_sar_specs *sar_specs,
15050                                      struct nlattr *spec[], int index)
15051 {
15052         u32 range_index, i;
15053
15054         if (!sar_specs || !spec)
15055                 return -EINVAL;
15056
15057         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
15058             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
15059                 return -EINVAL;
15060
15061         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
15062
15063         /* check if range_index exceeds num_freq_ranges */
15064         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
15065                 return -EINVAL;
15066
15067         /* check if range_index duplicates */
15068         for (i = 0; i < index; i++) {
15069                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
15070                         return -EINVAL;
15071         }
15072
15073         sar_specs->sub_specs[index].power =
15074                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
15075
15076         sar_specs->sub_specs[index].freq_range_index = range_index;
15077
15078         return 0;
15079 }
15080
15081 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
15082 {
15083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15084         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
15085         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
15086         struct cfg80211_sar_specs *sar_spec;
15087         enum nl80211_sar_type type;
15088         struct nlattr *spec_list;
15089         u32 specs;
15090         int rem, err;
15091
15092         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
15093                 return -EOPNOTSUPP;
15094
15095         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
15096                 return -EINVAL;
15097
15098         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
15099                          info->attrs[NL80211_ATTR_SAR_SPEC],
15100                          NULL, NULL);
15101
15102         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
15103                 return -EINVAL;
15104
15105         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
15106         if (type != rdev->wiphy.sar_capa->type)
15107                 return -EINVAL;
15108
15109         specs = 0;
15110         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
15111                 specs++;
15112
15113         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
15114                 return -EINVAL;
15115
15116         sar_spec = kzalloc(sizeof(*sar_spec) +
15117                            specs * sizeof(struct cfg80211_sar_sub_specs),
15118                            GFP_KERNEL);
15119         if (!sar_spec)
15120                 return -ENOMEM;
15121
15122         sar_spec->type = type;
15123         specs = 0;
15124         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
15125                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
15126                                  spec_list, NULL, NULL);
15127
15128                 switch (type) {
15129                 case NL80211_SAR_TYPE_POWER:
15130                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
15131                                                       spec, specs)) {
15132                                 err = -EINVAL;
15133                                 goto error;
15134                         }
15135                         break;
15136                 default:
15137                         err = -EINVAL;
15138                         goto error;
15139                 }
15140                 specs++;
15141         }
15142
15143         sar_spec->num_sub_specs = specs;
15144
15145         rdev->cur_cmd_info = info;
15146         err = rdev_set_sar_specs(rdev, sar_spec);
15147         rdev->cur_cmd_info = NULL;
15148 error:
15149         kfree(sar_spec);
15150         return err;
15151 }
15152
15153 static const struct genl_ops nl80211_ops[] = {
15154         {
15155                 .cmd = NL80211_CMD_GET_WIPHY,
15156                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15157                 .doit = nl80211_get_wiphy,
15158                 .dumpit = nl80211_dump_wiphy,
15159                 .done = nl80211_dump_wiphy_done,
15160                 /* can be retrieved by unprivileged users */
15161                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15162         },
15163 };
15164
15165 static const struct genl_small_ops nl80211_small_ops[] = {
15166         {
15167                 .cmd = NL80211_CMD_SET_WIPHY,
15168                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15169                 .doit = nl80211_set_wiphy,
15170                 .flags = GENL_UNS_ADMIN_PERM,
15171         },
15172         {
15173                 .cmd = NL80211_CMD_GET_INTERFACE,
15174                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15175                 .doit = nl80211_get_interface,
15176                 .dumpit = nl80211_dump_interface,
15177                 /* can be retrieved by unprivileged users */
15178                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15179         },
15180         {
15181                 .cmd = NL80211_CMD_SET_INTERFACE,
15182                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15183                 .doit = nl80211_set_interface,
15184                 .flags = GENL_UNS_ADMIN_PERM,
15185                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15186                                   NL80211_FLAG_NEED_RTNL,
15187         },
15188         {
15189                 .cmd = NL80211_CMD_NEW_INTERFACE,
15190                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15191                 .doit = nl80211_new_interface,
15192                 .flags = GENL_UNS_ADMIN_PERM,
15193                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15194                                   NL80211_FLAG_NEED_RTNL |
15195                                   /* we take the wiphy mutex later ourselves */
15196                                   NL80211_FLAG_NO_WIPHY_MTX,
15197         },
15198         {
15199                 .cmd = NL80211_CMD_DEL_INTERFACE,
15200                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15201                 .doit = nl80211_del_interface,
15202                 .flags = GENL_UNS_ADMIN_PERM,
15203                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15204                                   NL80211_FLAG_NEED_RTNL,
15205         },
15206         {
15207                 .cmd = NL80211_CMD_GET_KEY,
15208                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15209                 .doit = nl80211_get_key,
15210                 .flags = GENL_UNS_ADMIN_PERM,
15211                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15212         },
15213         {
15214                 .cmd = NL80211_CMD_SET_KEY,
15215                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15216                 .doit = nl80211_set_key,
15217                 .flags = GENL_UNS_ADMIN_PERM,
15218                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15219                                   NL80211_FLAG_CLEAR_SKB,
15220         },
15221         {
15222                 .cmd = NL80211_CMD_NEW_KEY,
15223                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15224                 .doit = nl80211_new_key,
15225                 .flags = GENL_UNS_ADMIN_PERM,
15226                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15227                                   NL80211_FLAG_CLEAR_SKB,
15228         },
15229         {
15230                 .cmd = NL80211_CMD_DEL_KEY,
15231                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15232                 .doit = nl80211_del_key,
15233                 .flags = GENL_UNS_ADMIN_PERM,
15234                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15235         },
15236         {
15237                 .cmd = NL80211_CMD_SET_BEACON,
15238                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15239                 .flags = GENL_UNS_ADMIN_PERM,
15240                 .doit = nl80211_set_beacon,
15241                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15242         },
15243         {
15244                 .cmd = NL80211_CMD_START_AP,
15245                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15246                 .flags = GENL_UNS_ADMIN_PERM,
15247                 .doit = nl80211_start_ap,
15248                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15249         },
15250         {
15251                 .cmd = NL80211_CMD_STOP_AP,
15252                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15253                 .flags = GENL_UNS_ADMIN_PERM,
15254                 .doit = nl80211_stop_ap,
15255                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15256         },
15257         {
15258                 .cmd = NL80211_CMD_GET_STATION,
15259                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15260                 .doit = nl80211_get_station,
15261                 .dumpit = nl80211_dump_station,
15262                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15263         },
15264         {
15265                 .cmd = NL80211_CMD_SET_STATION,
15266                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15267                 .doit = nl80211_set_station,
15268                 .flags = GENL_UNS_ADMIN_PERM,
15269                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15270         },
15271         {
15272                 .cmd = NL80211_CMD_NEW_STATION,
15273                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15274                 .doit = nl80211_new_station,
15275                 .flags = GENL_UNS_ADMIN_PERM,
15276                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15277         },
15278         {
15279                 .cmd = NL80211_CMD_DEL_STATION,
15280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15281                 .doit = nl80211_del_station,
15282                 .flags = GENL_UNS_ADMIN_PERM,
15283                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15284         },
15285         {
15286                 .cmd = NL80211_CMD_GET_MPATH,
15287                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15288                 .doit = nl80211_get_mpath,
15289                 .dumpit = nl80211_dump_mpath,
15290                 .flags = GENL_UNS_ADMIN_PERM,
15291                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15292         },
15293         {
15294                 .cmd = NL80211_CMD_GET_MPP,
15295                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15296                 .doit = nl80211_get_mpp,
15297                 .dumpit = nl80211_dump_mpp,
15298                 .flags = GENL_UNS_ADMIN_PERM,
15299                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15300         },
15301         {
15302                 .cmd = NL80211_CMD_SET_MPATH,
15303                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15304                 .doit = nl80211_set_mpath,
15305                 .flags = GENL_UNS_ADMIN_PERM,
15306                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15307         },
15308         {
15309                 .cmd = NL80211_CMD_NEW_MPATH,
15310                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15311                 .doit = nl80211_new_mpath,
15312                 .flags = GENL_UNS_ADMIN_PERM,
15313                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15314         },
15315         {
15316                 .cmd = NL80211_CMD_DEL_MPATH,
15317                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15318                 .doit = nl80211_del_mpath,
15319                 .flags = GENL_UNS_ADMIN_PERM,
15320                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15321         },
15322         {
15323                 .cmd = NL80211_CMD_SET_BSS,
15324                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15325                 .doit = nl80211_set_bss,
15326                 .flags = GENL_UNS_ADMIN_PERM,
15327                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15328         },
15329         {
15330                 .cmd = NL80211_CMD_GET_REG,
15331                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15332                 .doit = nl80211_get_reg_do,
15333                 .dumpit = nl80211_get_reg_dump,
15334                 .internal_flags = 0,
15335                 /* can be retrieved by unprivileged users */
15336         },
15337 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15338         {
15339                 .cmd = NL80211_CMD_SET_REG,
15340                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15341                 .doit = nl80211_set_reg,
15342                 .flags = GENL_ADMIN_PERM,
15343                 .internal_flags = 0,
15344         },
15345 #endif
15346         {
15347                 .cmd = NL80211_CMD_REQ_SET_REG,
15348                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15349                 .doit = nl80211_req_set_reg,
15350                 .flags = GENL_ADMIN_PERM,
15351         },
15352         {
15353                 .cmd = NL80211_CMD_RELOAD_REGDB,
15354                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15355                 .doit = nl80211_reload_regdb,
15356                 .flags = GENL_ADMIN_PERM,
15357         },
15358         {
15359                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15361                 .doit = nl80211_get_mesh_config,
15362                 /* can be retrieved by unprivileged users */
15363                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15364         },
15365         {
15366                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15367                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15368                 .doit = nl80211_update_mesh_config,
15369                 .flags = GENL_UNS_ADMIN_PERM,
15370                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15371         },
15372         {
15373                 .cmd = NL80211_CMD_TRIGGER_SCAN,
15374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15375                 .doit = nl80211_trigger_scan,
15376                 .flags = GENL_UNS_ADMIN_PERM,
15377                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15378         },
15379         {
15380                 .cmd = NL80211_CMD_ABORT_SCAN,
15381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15382                 .doit = nl80211_abort_scan,
15383                 .flags = GENL_UNS_ADMIN_PERM,
15384                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15385         },
15386         {
15387                 .cmd = NL80211_CMD_GET_SCAN,
15388                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15389                 .dumpit = nl80211_dump_scan,
15390         },
15391         {
15392                 .cmd = NL80211_CMD_START_SCHED_SCAN,
15393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15394                 .doit = nl80211_start_sched_scan,
15395                 .flags = GENL_UNS_ADMIN_PERM,
15396                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15397         },
15398         {
15399                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15401                 .doit = nl80211_stop_sched_scan,
15402                 .flags = GENL_UNS_ADMIN_PERM,
15403                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15404         },
15405         {
15406                 .cmd = NL80211_CMD_AUTHENTICATE,
15407                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15408                 .doit = nl80211_authenticate,
15409                 .flags = GENL_UNS_ADMIN_PERM,
15410                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15411                                   0 |
15412                                   NL80211_FLAG_CLEAR_SKB,
15413         },
15414         {
15415                 .cmd = NL80211_CMD_ASSOCIATE,
15416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15417                 .doit = nl80211_associate,
15418                 .flags = GENL_UNS_ADMIN_PERM,
15419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15420                                   0 |
15421                                   NL80211_FLAG_CLEAR_SKB,
15422         },
15423         {
15424                 .cmd = NL80211_CMD_DEAUTHENTICATE,
15425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15426                 .doit = nl80211_deauthenticate,
15427                 .flags = GENL_UNS_ADMIN_PERM,
15428                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15429         },
15430         {
15431                 .cmd = NL80211_CMD_DISASSOCIATE,
15432                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15433                 .doit = nl80211_disassociate,
15434                 .flags = GENL_UNS_ADMIN_PERM,
15435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15436         },
15437         {
15438                 .cmd = NL80211_CMD_JOIN_IBSS,
15439                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15440                 .doit = nl80211_join_ibss,
15441                 .flags = GENL_UNS_ADMIN_PERM,
15442                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15443         },
15444         {
15445                 .cmd = NL80211_CMD_LEAVE_IBSS,
15446                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15447                 .doit = nl80211_leave_ibss,
15448                 .flags = GENL_UNS_ADMIN_PERM,
15449                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15450         },
15451 #ifdef CONFIG_NL80211_TESTMODE
15452         {
15453                 .cmd = NL80211_CMD_TESTMODE,
15454                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15455                 .doit = nl80211_testmode_do,
15456                 .dumpit = nl80211_testmode_dump,
15457                 .flags = GENL_UNS_ADMIN_PERM,
15458                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15459         },
15460 #endif
15461         {
15462                 .cmd = NL80211_CMD_CONNECT,
15463                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15464                 .doit = nl80211_connect,
15465                 .flags = GENL_UNS_ADMIN_PERM,
15466                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15467                                   0 |
15468                                   NL80211_FLAG_CLEAR_SKB,
15469         },
15470         {
15471                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15472                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15473                 .doit = nl80211_update_connect_params,
15474                 .flags = GENL_ADMIN_PERM,
15475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15476                                   0 |
15477                                   NL80211_FLAG_CLEAR_SKB,
15478         },
15479         {
15480                 .cmd = NL80211_CMD_DISCONNECT,
15481                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15482                 .doit = nl80211_disconnect,
15483                 .flags = GENL_UNS_ADMIN_PERM,
15484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15485         },
15486         {
15487                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15488                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15489                 .doit = nl80211_wiphy_netns,
15490                 .flags = GENL_UNS_ADMIN_PERM,
15491                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15492                                   NL80211_FLAG_NEED_RTNL |
15493                                   NL80211_FLAG_NO_WIPHY_MTX,
15494         },
15495         {
15496                 .cmd = NL80211_CMD_GET_SURVEY,
15497                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15498                 .dumpit = nl80211_dump_survey,
15499         },
15500         {
15501                 .cmd = NL80211_CMD_SET_PMKSA,
15502                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15503                 .doit = nl80211_setdel_pmksa,
15504                 .flags = GENL_UNS_ADMIN_PERM,
15505                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15506                                   0 |
15507                                   NL80211_FLAG_CLEAR_SKB,
15508         },
15509         {
15510                 .cmd = NL80211_CMD_DEL_PMKSA,
15511                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15512                 .doit = nl80211_setdel_pmksa,
15513                 .flags = GENL_UNS_ADMIN_PERM,
15514                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15515         },
15516         {
15517                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15518                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15519                 .doit = nl80211_flush_pmksa,
15520                 .flags = GENL_UNS_ADMIN_PERM,
15521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15522         },
15523         {
15524                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15525                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15526                 .doit = nl80211_remain_on_channel,
15527                 .flags = GENL_UNS_ADMIN_PERM,
15528                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15529         },
15530         {
15531                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15533                 .doit = nl80211_cancel_remain_on_channel,
15534                 .flags = GENL_UNS_ADMIN_PERM,
15535                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15536         },
15537         {
15538                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15539                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15540                 .doit = nl80211_set_tx_bitrate_mask,
15541                 .flags = GENL_UNS_ADMIN_PERM,
15542                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15543         },
15544         {
15545                 .cmd = NL80211_CMD_REGISTER_FRAME,
15546                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15547                 .doit = nl80211_register_mgmt,
15548                 .flags = GENL_UNS_ADMIN_PERM,
15549                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15550         },
15551         {
15552                 .cmd = NL80211_CMD_FRAME,
15553                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15554                 .doit = nl80211_tx_mgmt,
15555                 .flags = GENL_UNS_ADMIN_PERM,
15556                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15557         },
15558         {
15559                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15560                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15561                 .doit = nl80211_tx_mgmt_cancel_wait,
15562                 .flags = GENL_UNS_ADMIN_PERM,
15563                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15564         },
15565         {
15566                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15567                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15568                 .doit = nl80211_set_power_save,
15569                 .flags = GENL_UNS_ADMIN_PERM,
15570                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15571         },
15572         {
15573                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15574                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15575                 .doit = nl80211_get_power_save,
15576                 /* can be retrieved by unprivileged users */
15577                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15578         },
15579         {
15580                 .cmd = NL80211_CMD_SET_CQM,
15581                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15582                 .doit = nl80211_set_cqm,
15583                 .flags = GENL_UNS_ADMIN_PERM,
15584                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15585         },
15586         {
15587                 .cmd = NL80211_CMD_SET_CHANNEL,
15588                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15589                 .doit = nl80211_set_channel,
15590                 .flags = GENL_UNS_ADMIN_PERM,
15591                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15592         },
15593         {
15594                 .cmd = NL80211_CMD_JOIN_MESH,
15595                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15596                 .doit = nl80211_join_mesh,
15597                 .flags = GENL_UNS_ADMIN_PERM,
15598                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15599         },
15600         {
15601                 .cmd = NL80211_CMD_LEAVE_MESH,
15602                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15603                 .doit = nl80211_leave_mesh,
15604                 .flags = GENL_UNS_ADMIN_PERM,
15605                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15606         },
15607         {
15608                 .cmd = NL80211_CMD_JOIN_OCB,
15609                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15610                 .doit = nl80211_join_ocb,
15611                 .flags = GENL_UNS_ADMIN_PERM,
15612                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15613         },
15614         {
15615                 .cmd = NL80211_CMD_LEAVE_OCB,
15616                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15617                 .doit = nl80211_leave_ocb,
15618                 .flags = GENL_UNS_ADMIN_PERM,
15619                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15620         },
15621 #ifdef CONFIG_PM
15622         {
15623                 .cmd = NL80211_CMD_GET_WOWLAN,
15624                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15625                 .doit = nl80211_get_wowlan,
15626                 /* can be retrieved by unprivileged users */
15627                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15628         },
15629         {
15630                 .cmd = NL80211_CMD_SET_WOWLAN,
15631                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15632                 .doit = nl80211_set_wowlan,
15633                 .flags = GENL_UNS_ADMIN_PERM,
15634                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15635         },
15636 #endif
15637         {
15638                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15639                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15640                 .doit = nl80211_set_rekey_data,
15641                 .flags = GENL_UNS_ADMIN_PERM,
15642                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15643                                   0 |
15644                                   NL80211_FLAG_CLEAR_SKB,
15645         },
15646         {
15647                 .cmd = NL80211_CMD_TDLS_MGMT,
15648                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15649                 .doit = nl80211_tdls_mgmt,
15650                 .flags = GENL_UNS_ADMIN_PERM,
15651                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15652         },
15653         {
15654                 .cmd = NL80211_CMD_TDLS_OPER,
15655                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15656                 .doit = nl80211_tdls_oper,
15657                 .flags = GENL_UNS_ADMIN_PERM,
15658                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15659         },
15660         {
15661                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15662                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15663                 .doit = nl80211_register_unexpected_frame,
15664                 .flags = GENL_UNS_ADMIN_PERM,
15665                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15666         },
15667         {
15668                 .cmd = NL80211_CMD_PROBE_CLIENT,
15669                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15670                 .doit = nl80211_probe_client,
15671                 .flags = GENL_UNS_ADMIN_PERM,
15672                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15673         },
15674         {
15675                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15676                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15677                 .doit = nl80211_register_beacons,
15678                 .flags = GENL_UNS_ADMIN_PERM,
15679                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15680         },
15681         {
15682                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15683                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15684                 .doit = nl80211_set_noack_map,
15685                 .flags = GENL_UNS_ADMIN_PERM,
15686                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15687         },
15688         {
15689                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15691                 .doit = nl80211_start_p2p_device,
15692                 .flags = GENL_UNS_ADMIN_PERM,
15693                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15694                                   NL80211_FLAG_NEED_RTNL,
15695         },
15696         {
15697                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15698                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15699                 .doit = nl80211_stop_p2p_device,
15700                 .flags = GENL_UNS_ADMIN_PERM,
15701                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15702                                   NL80211_FLAG_NEED_RTNL,
15703         },
15704         {
15705                 .cmd = NL80211_CMD_START_NAN,
15706                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15707                 .doit = nl80211_start_nan,
15708                 .flags = GENL_ADMIN_PERM,
15709                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15710                                   NL80211_FLAG_NEED_RTNL,
15711         },
15712         {
15713                 .cmd = NL80211_CMD_STOP_NAN,
15714                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15715                 .doit = nl80211_stop_nan,
15716                 .flags = GENL_ADMIN_PERM,
15717                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15718                                   NL80211_FLAG_NEED_RTNL,
15719         },
15720         {
15721                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15723                 .doit = nl80211_nan_add_func,
15724                 .flags = GENL_ADMIN_PERM,
15725                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15726         },
15727         {
15728                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15729                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15730                 .doit = nl80211_nan_del_func,
15731                 .flags = GENL_ADMIN_PERM,
15732                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15733         },
15734         {
15735                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15736                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15737                 .doit = nl80211_nan_change_config,
15738                 .flags = GENL_ADMIN_PERM,
15739                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15740         },
15741         {
15742                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15744                 .doit = nl80211_set_mcast_rate,
15745                 .flags = GENL_UNS_ADMIN_PERM,
15746                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15747         },
15748         {
15749                 .cmd = NL80211_CMD_SET_MAC_ACL,
15750                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15751                 .doit = nl80211_set_mac_acl,
15752                 .flags = GENL_UNS_ADMIN_PERM,
15753                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15754         },
15755         {
15756                 .cmd = NL80211_CMD_RADAR_DETECT,
15757                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15758                 .doit = nl80211_start_radar_detection,
15759                 .flags = GENL_UNS_ADMIN_PERM,
15760                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15761         },
15762         {
15763                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15764                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15765                 .doit = nl80211_get_protocol_features,
15766         },
15767         {
15768                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15769                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15770                 .doit = nl80211_update_ft_ies,
15771                 .flags = GENL_UNS_ADMIN_PERM,
15772                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15773         },
15774         {
15775                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15776                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15777                 .doit = nl80211_crit_protocol_start,
15778                 .flags = GENL_UNS_ADMIN_PERM,
15779                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15780         },
15781         {
15782                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15783                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15784                 .doit = nl80211_crit_protocol_stop,
15785                 .flags = GENL_UNS_ADMIN_PERM,
15786                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15787         },
15788         {
15789                 .cmd = NL80211_CMD_GET_COALESCE,
15790                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15791                 .doit = nl80211_get_coalesce,
15792                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15793         },
15794         {
15795                 .cmd = NL80211_CMD_SET_COALESCE,
15796                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15797                 .doit = nl80211_set_coalesce,
15798                 .flags = GENL_UNS_ADMIN_PERM,
15799                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15800         },
15801         {
15802                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15803                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15804                 .doit = nl80211_channel_switch,
15805                 .flags = GENL_UNS_ADMIN_PERM,
15806                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15807         },
15808         {
15809                 .cmd = NL80211_CMD_VENDOR,
15810                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15811                 .doit = nl80211_vendor_cmd,
15812                 .dumpit = nl80211_vendor_cmd_dump,
15813                 .flags = GENL_UNS_ADMIN_PERM,
15814                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15815                                   0 |
15816                                   NL80211_FLAG_CLEAR_SKB,
15817         },
15818         {
15819                 .cmd = NL80211_CMD_SET_QOS_MAP,
15820                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15821                 .doit = nl80211_set_qos_map,
15822                 .flags = GENL_UNS_ADMIN_PERM,
15823                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15824         },
15825         {
15826                 .cmd = NL80211_CMD_ADD_TX_TS,
15827                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15828                 .doit = nl80211_add_tx_ts,
15829                 .flags = GENL_UNS_ADMIN_PERM,
15830                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15831         },
15832         {
15833                 .cmd = NL80211_CMD_DEL_TX_TS,
15834                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15835                 .doit = nl80211_del_tx_ts,
15836                 .flags = GENL_UNS_ADMIN_PERM,
15837                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15838         },
15839         {
15840                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15841                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15842                 .doit = nl80211_tdls_channel_switch,
15843                 .flags = GENL_UNS_ADMIN_PERM,
15844                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15845         },
15846         {
15847                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15848                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15849                 .doit = nl80211_tdls_cancel_channel_switch,
15850                 .flags = GENL_UNS_ADMIN_PERM,
15851                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15852         },
15853         {
15854                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15855                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15856                 .doit = nl80211_set_multicast_to_unicast,
15857                 .flags = GENL_UNS_ADMIN_PERM,
15858                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15859         },
15860         {
15861                 .cmd = NL80211_CMD_SET_PMK,
15862                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15863                 .doit = nl80211_set_pmk,
15864                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15865                                   0 |
15866                                   NL80211_FLAG_CLEAR_SKB,
15867         },
15868         {
15869                 .cmd = NL80211_CMD_DEL_PMK,
15870                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15871                 .doit = nl80211_del_pmk,
15872                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15873         },
15874         {
15875                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15876                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15877                 .doit = nl80211_external_auth,
15878                 .flags = GENL_ADMIN_PERM,
15879                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15880         },
15881         {
15882                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15883                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15884                 .doit = nl80211_tx_control_port,
15885                 .flags = GENL_UNS_ADMIN_PERM,
15886                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15887         },
15888         {
15889                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15891                 .doit = nl80211_get_ftm_responder_stats,
15892                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15893         },
15894         {
15895                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15896                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15897                 .doit = nl80211_pmsr_start,
15898                 .flags = GENL_UNS_ADMIN_PERM,
15899                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15900         },
15901         {
15902                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15903                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15904                 .doit = nl80211_notify_radar_detection,
15905                 .flags = GENL_UNS_ADMIN_PERM,
15906                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15907         },
15908         {
15909                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15910                 .doit = nl80211_update_owe_info,
15911                 .flags = GENL_ADMIN_PERM,
15912                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15913         },
15914         {
15915                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15916                 .doit = nl80211_probe_mesh_link,
15917                 .flags = GENL_UNS_ADMIN_PERM,
15918                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15919         },
15920         {
15921                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15922                 .doit = nl80211_set_tid_config,
15923                 .flags = GENL_UNS_ADMIN_PERM,
15924                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15925         },
15926         {
15927                 .cmd = NL80211_CMD_SET_SAR_SPECS,
15928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15929                 .doit = nl80211_set_sar_specs,
15930                 .flags = GENL_UNS_ADMIN_PERM,
15931                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15932                                   NL80211_FLAG_NEED_RTNL,
15933         },
15934         {
15935                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
15936                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15937                 .doit = nl80211_color_change,
15938                 .flags = GENL_UNS_ADMIN_PERM,
15939                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15940         },
15941 };
15942
15943 static struct genl_family nl80211_fam __ro_after_init = {
15944         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15945         .hdrsize = 0,                   /* no private header */
15946         .version = 1,                   /* no particular meaning now */
15947         .maxattr = NL80211_ATTR_MAX,
15948         .policy = nl80211_policy,
15949         .netnsok = true,
15950         .pre_doit = nl80211_pre_doit,
15951         .post_doit = nl80211_post_doit,
15952         .module = THIS_MODULE,
15953         .ops = nl80211_ops,
15954         .n_ops = ARRAY_SIZE(nl80211_ops),
15955         .small_ops = nl80211_small_ops,
15956         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15957         .mcgrps = nl80211_mcgrps,
15958         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15959         .parallel_ops = true,
15960 };
15961
15962 /* notification functions */
15963
15964 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15965                           enum nl80211_commands cmd)
15966 {
15967         struct sk_buff *msg;
15968         struct nl80211_dump_wiphy_state state = {};
15969
15970         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15971                 cmd != NL80211_CMD_DEL_WIPHY);
15972
15973         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15974         if (!msg)
15975                 return;
15976
15977         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15978                 nlmsg_free(msg);
15979                 return;
15980         }
15981
15982         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15983                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15984 }
15985
15986 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15987                                 struct wireless_dev *wdev,
15988                                 enum nl80211_commands cmd)
15989 {
15990         struct sk_buff *msg;
15991
15992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15993         if (!msg)
15994                 return;
15995
15996         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15997                 nlmsg_free(msg);
15998                 return;
15999         }
16000
16001         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16002                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
16003 }
16004
16005 static int nl80211_add_scan_req(struct sk_buff *msg,
16006                                 struct cfg80211_registered_device *rdev)
16007 {
16008         struct cfg80211_scan_request *req = rdev->scan_req;
16009         struct nlattr *nest;
16010         int i;
16011         struct cfg80211_scan_info *info;
16012
16013         if (WARN_ON(!req))
16014                 return 0;
16015
16016         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
16017         if (!nest)
16018                 goto nla_put_failure;
16019         for (i = 0; i < req->n_ssids; i++) {
16020                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
16021                         goto nla_put_failure;
16022         }
16023         nla_nest_end(msg, nest);
16024
16025         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
16026                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
16027                 if (!nest)
16028                         goto nla_put_failure;
16029                 for (i = 0; i < req->n_channels; i++) {
16030                         if (nla_put_u32(msg, i,
16031                                    ieee80211_channel_to_khz(req->channels[i])))
16032                                 goto nla_put_failure;
16033                 }
16034                 nla_nest_end(msg, nest);
16035         } else {
16036                 nest = nla_nest_start_noflag(msg,
16037                                              NL80211_ATTR_SCAN_FREQUENCIES);
16038                 if (!nest)
16039                         goto nla_put_failure;
16040                 for (i = 0; i < req->n_channels; i++) {
16041                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
16042                                 goto nla_put_failure;
16043                 }
16044                 nla_nest_end(msg, nest);
16045         }
16046
16047         if (req->ie &&
16048             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
16049                 goto nla_put_failure;
16050
16051         if (req->flags &&
16052             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
16053                 goto nla_put_failure;
16054
16055         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
16056                 &rdev->scan_req->info;
16057         if (info->scan_start_tsf &&
16058             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
16059                                info->scan_start_tsf, NL80211_BSS_PAD) ||
16060              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
16061                      info->tsf_bssid)))
16062                 goto nla_put_failure;
16063
16064         return 0;
16065  nla_put_failure:
16066         return -ENOBUFS;
16067 }
16068
16069 static int nl80211_prep_scan_msg(struct sk_buff *msg,
16070                                  struct cfg80211_registered_device *rdev,
16071                                  struct wireless_dev *wdev,
16072                                  u32 portid, u32 seq, int flags,
16073                                  u32 cmd)
16074 {
16075         void *hdr;
16076
16077         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
16078         if (!hdr)
16079                 return -1;
16080
16081         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16082             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16083                                          wdev->netdev->ifindex)) ||
16084             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16085                               NL80211_ATTR_PAD))
16086                 goto nla_put_failure;
16087
16088         /* ignore errors and send incomplete event anyway */
16089         nl80211_add_scan_req(msg, rdev);
16090
16091         genlmsg_end(msg, hdr);
16092         return 0;
16093
16094  nla_put_failure:
16095         genlmsg_cancel(msg, hdr);
16096         return -EMSGSIZE;
16097 }
16098
16099 static int
16100 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
16101                             struct cfg80211_sched_scan_request *req, u32 cmd)
16102 {
16103         void *hdr;
16104
16105         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16106         if (!hdr)
16107                 return -1;
16108
16109         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
16110                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
16111             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
16112             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
16113                               NL80211_ATTR_PAD))
16114                 goto nla_put_failure;
16115
16116         genlmsg_end(msg, hdr);
16117         return 0;
16118
16119  nla_put_failure:
16120         genlmsg_cancel(msg, hdr);
16121         return -EMSGSIZE;
16122 }
16123
16124 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
16125                              struct wireless_dev *wdev)
16126 {
16127         struct sk_buff *msg;
16128
16129         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16130         if (!msg)
16131                 return;
16132
16133         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
16134                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
16135                 nlmsg_free(msg);
16136                 return;
16137         }
16138
16139         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16140                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16141 }
16142
16143 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
16144                                        struct wireless_dev *wdev, bool aborted)
16145 {
16146         struct sk_buff *msg;
16147
16148         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16149         if (!msg)
16150                 return NULL;
16151
16152         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
16153                                   aborted ? NL80211_CMD_SCAN_ABORTED :
16154                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
16155                 nlmsg_free(msg);
16156                 return NULL;
16157         }
16158
16159         return msg;
16160 }
16161
16162 /* send message created by nl80211_build_scan_msg() */
16163 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
16164                            struct sk_buff *msg)
16165 {
16166         if (!msg)
16167                 return;
16168
16169         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16170                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16171 }
16172
16173 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
16174 {
16175         struct sk_buff *msg;
16176
16177         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16178         if (!msg)
16179                 return;
16180
16181         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
16182                 nlmsg_free(msg);
16183                 return;
16184         }
16185
16186         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
16187                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16188 }
16189
16190 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
16191                                           struct regulatory_request *request)
16192 {
16193         /* Userspace can always count this one always being set */
16194         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
16195                 goto nla_put_failure;
16196
16197         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
16198                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16199                                NL80211_REGDOM_TYPE_WORLD))
16200                         goto nla_put_failure;
16201         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
16202                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16203                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
16204                         goto nla_put_failure;
16205         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
16206                    request->intersect) {
16207                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16208                                NL80211_REGDOM_TYPE_INTERSECTION))
16209                         goto nla_put_failure;
16210         } else {
16211                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16212                                NL80211_REGDOM_TYPE_COUNTRY) ||
16213                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
16214                                    request->alpha2))
16215                         goto nla_put_failure;
16216         }
16217
16218         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
16219                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
16220
16221                 if (wiphy &&
16222                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
16223                         goto nla_put_failure;
16224
16225                 if (wiphy &&
16226                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
16227                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
16228                         goto nla_put_failure;
16229         }
16230
16231         return true;
16232
16233 nla_put_failure:
16234         return false;
16235 }
16236
16237 /*
16238  * This can happen on global regulatory changes or device specific settings
16239  * based on custom regulatory domains.
16240  */
16241 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16242                                      struct regulatory_request *request)
16243 {
16244         struct sk_buff *msg;
16245         void *hdr;
16246
16247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16248         if (!msg)
16249                 return;
16250
16251         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16252         if (!hdr)
16253                 goto nla_put_failure;
16254
16255         if (!nl80211_reg_change_event_fill(msg, request))
16256                 goto nla_put_failure;
16257
16258         genlmsg_end(msg, hdr);
16259
16260         rcu_read_lock();
16261         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16262                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16263         rcu_read_unlock();
16264
16265         return;
16266
16267 nla_put_failure:
16268         nlmsg_free(msg);
16269 }
16270
16271 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16272                                     struct net_device *netdev,
16273                                     const u8 *buf, size_t len,
16274                                     enum nl80211_commands cmd, gfp_t gfp,
16275                                     int uapsd_queues, const u8 *req_ies,
16276                                     size_t req_ies_len, bool reconnect)
16277 {
16278         struct sk_buff *msg;
16279         void *hdr;
16280
16281         msg = nlmsg_new(100 + len + req_ies_len, gfp);
16282         if (!msg)
16283                 return;
16284
16285         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16286         if (!hdr) {
16287                 nlmsg_free(msg);
16288                 return;
16289         }
16290
16291         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16292             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16293             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16294             (req_ies &&
16295              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16296                 goto nla_put_failure;
16297
16298         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16299                 goto nla_put_failure;
16300
16301         if (uapsd_queues >= 0) {
16302                 struct nlattr *nla_wmm =
16303                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16304                 if (!nla_wmm)
16305                         goto nla_put_failure;
16306
16307                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16308                                uapsd_queues))
16309                         goto nla_put_failure;
16310
16311                 nla_nest_end(msg, nla_wmm);
16312         }
16313
16314         genlmsg_end(msg, hdr);
16315
16316         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16317                                 NL80211_MCGRP_MLME, gfp);
16318         return;
16319
16320  nla_put_failure:
16321         nlmsg_free(msg);
16322 }
16323
16324 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16325                           struct net_device *netdev, const u8 *buf,
16326                           size_t len, gfp_t gfp)
16327 {
16328         nl80211_send_mlme_event(rdev, netdev, buf, len,
16329                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16330                                 false);
16331 }
16332
16333 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16334                            struct net_device *netdev, const u8 *buf,
16335                            size_t len, gfp_t gfp, int uapsd_queues,
16336                            const u8 *req_ies, size_t req_ies_len)
16337 {
16338         nl80211_send_mlme_event(rdev, netdev, buf, len,
16339                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16340                                 req_ies, req_ies_len, false);
16341 }
16342
16343 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16344                          struct net_device *netdev, const u8 *buf,
16345                          size_t len, bool reconnect, gfp_t gfp)
16346 {
16347         nl80211_send_mlme_event(rdev, netdev, buf, len,
16348                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16349                                 reconnect);
16350 }
16351
16352 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16353                            struct net_device *netdev, const u8 *buf,
16354                            size_t len, bool reconnect, gfp_t gfp)
16355 {
16356         nl80211_send_mlme_event(rdev, netdev, buf, len,
16357                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16358                                 reconnect);
16359 }
16360
16361 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16362                                   size_t len)
16363 {
16364         struct wireless_dev *wdev = dev->ieee80211_ptr;
16365         struct wiphy *wiphy = wdev->wiphy;
16366         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16367         const struct ieee80211_mgmt *mgmt = (void *)buf;
16368         u32 cmd;
16369
16370         if (WARN_ON(len < 2))
16371                 return;
16372
16373         if (ieee80211_is_deauth(mgmt->frame_control)) {
16374                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16375         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16376                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16377         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16378                 if (wdev->unprot_beacon_reported &&
16379                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16380                         return;
16381                 cmd = NL80211_CMD_UNPROT_BEACON;
16382                 wdev->unprot_beacon_reported = jiffies;
16383         } else {
16384                 return;
16385         }
16386
16387         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16388         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16389                                 NULL, 0, false);
16390 }
16391 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16392
16393 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16394                                       struct net_device *netdev, int cmd,
16395                                       const u8 *addr, gfp_t gfp)
16396 {
16397         struct sk_buff *msg;
16398         void *hdr;
16399
16400         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16401         if (!msg)
16402                 return;
16403
16404         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16405         if (!hdr) {
16406                 nlmsg_free(msg);
16407                 return;
16408         }
16409
16410         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16411             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16412             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16413             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16414                 goto nla_put_failure;
16415
16416         genlmsg_end(msg, hdr);
16417
16418         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16419                                 NL80211_MCGRP_MLME, gfp);
16420         return;
16421
16422  nla_put_failure:
16423         nlmsg_free(msg);
16424 }
16425
16426 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16427                                struct net_device *netdev, const u8 *addr,
16428                                gfp_t gfp)
16429 {
16430         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16431                                   addr, gfp);
16432 }
16433
16434 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16435                                 struct net_device *netdev, const u8 *addr,
16436                                 gfp_t gfp)
16437 {
16438         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16439                                   addr, gfp);
16440 }
16441
16442 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16443                                  struct net_device *netdev,
16444                                  struct cfg80211_connect_resp_params *cr,
16445                                  gfp_t gfp)
16446 {
16447         struct sk_buff *msg;
16448         void *hdr;
16449
16450         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16451                         cr->fils.kek_len + cr->fils.pmk_len +
16452                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16453         if (!msg)
16454                 return;
16455
16456         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16457         if (!hdr) {
16458                 nlmsg_free(msg);
16459                 return;
16460         }
16461
16462         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16463             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16464             (cr->bssid &&
16465              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16466             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16467                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16468                         cr->status) ||
16469             (cr->status < 0 &&
16470              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16471               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16472                           cr->timeout_reason))) ||
16473             (cr->req_ie &&
16474              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16475             (cr->resp_ie &&
16476              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16477                      cr->resp_ie)) ||
16478             (cr->fils.update_erp_next_seq_num &&
16479              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16480                          cr->fils.erp_next_seq_num)) ||
16481             (cr->status == WLAN_STATUS_SUCCESS &&
16482              ((cr->fils.kek &&
16483                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16484                        cr->fils.kek)) ||
16485               (cr->fils.pmk &&
16486                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16487               (cr->fils.pmkid &&
16488                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16489                 goto nla_put_failure;
16490
16491         genlmsg_end(msg, hdr);
16492
16493         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16494                                 NL80211_MCGRP_MLME, gfp);
16495         return;
16496
16497  nla_put_failure:
16498         nlmsg_free(msg);
16499 }
16500
16501 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16502                          struct net_device *netdev,
16503                          struct cfg80211_roam_info *info, gfp_t gfp)
16504 {
16505         struct sk_buff *msg;
16506         void *hdr;
16507         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16508
16509         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16510                         info->fils.kek_len + info->fils.pmk_len +
16511                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16512         if (!msg)
16513                 return;
16514
16515         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16516         if (!hdr) {
16517                 nlmsg_free(msg);
16518                 return;
16519         }
16520
16521         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16522             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16523             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16524             (info->req_ie &&
16525              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16526                      info->req_ie)) ||
16527             (info->resp_ie &&
16528              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16529                      info->resp_ie)) ||
16530             (info->fils.update_erp_next_seq_num &&
16531              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16532                          info->fils.erp_next_seq_num)) ||
16533             (info->fils.kek &&
16534              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16535                      info->fils.kek)) ||
16536             (info->fils.pmk &&
16537              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16538             (info->fils.pmkid &&
16539              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16540                 goto nla_put_failure;
16541
16542         genlmsg_end(msg, hdr);
16543
16544         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16545                                 NL80211_MCGRP_MLME, gfp);
16546         return;
16547
16548  nla_put_failure:
16549         nlmsg_free(msg);
16550 }
16551
16552 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16553                                   struct net_device *netdev, const u8 *bssid)
16554 {
16555         struct sk_buff *msg;
16556         void *hdr;
16557
16558         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16559         if (!msg)
16560                 return;
16561
16562         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16563         if (!hdr) {
16564                 nlmsg_free(msg);
16565                 return;
16566         }
16567
16568         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16569             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16570             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16571                 goto nla_put_failure;
16572
16573         genlmsg_end(msg, hdr);
16574
16575         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16576                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16577         return;
16578
16579  nla_put_failure:
16580         nlmsg_free(msg);
16581 }
16582
16583 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16584                                struct net_device *netdev, u16 reason,
16585                                const u8 *ie, size_t ie_len, bool from_ap)
16586 {
16587         struct sk_buff *msg;
16588         void *hdr;
16589
16590         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16591         if (!msg)
16592                 return;
16593
16594         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16595         if (!hdr) {
16596                 nlmsg_free(msg);
16597                 return;
16598         }
16599
16600         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16601             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16602             (reason &&
16603              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16604             (from_ap &&
16605              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16606             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16607                 goto nla_put_failure;
16608
16609         genlmsg_end(msg, hdr);
16610
16611         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16612                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16613         return;
16614
16615  nla_put_failure:
16616         nlmsg_free(msg);
16617 }
16618
16619 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16620                              struct net_device *netdev, const u8 *bssid,
16621                              gfp_t gfp)
16622 {
16623         struct sk_buff *msg;
16624         void *hdr;
16625
16626         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16627         if (!msg)
16628                 return;
16629
16630         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16631         if (!hdr) {
16632                 nlmsg_free(msg);
16633                 return;
16634         }
16635
16636         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16637             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16638             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16639                 goto nla_put_failure;
16640
16641         genlmsg_end(msg, hdr);
16642
16643         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16644                                 NL80211_MCGRP_MLME, gfp);
16645         return;
16646
16647  nla_put_failure:
16648         nlmsg_free(msg);
16649 }
16650
16651 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16652                                         const u8 *ie, u8 ie_len,
16653                                         int sig_dbm, gfp_t gfp)
16654 {
16655         struct wireless_dev *wdev = dev->ieee80211_ptr;
16656         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16657         struct sk_buff *msg;
16658         void *hdr;
16659
16660         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16661                 return;
16662
16663         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16664
16665         msg = nlmsg_new(100 + ie_len, gfp);
16666         if (!msg)
16667                 return;
16668
16669         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16670         if (!hdr) {
16671                 nlmsg_free(msg);
16672                 return;
16673         }
16674
16675         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16676             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16677             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16678             (ie_len && ie &&
16679              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16680             (sig_dbm &&
16681              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16682                 goto nla_put_failure;
16683
16684         genlmsg_end(msg, hdr);
16685
16686         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16687                                 NL80211_MCGRP_MLME, gfp);
16688         return;
16689
16690  nla_put_failure:
16691         nlmsg_free(msg);
16692 }
16693 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16694
16695 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16696                                  struct net_device *netdev, const u8 *addr,
16697                                  enum nl80211_key_type key_type, int key_id,
16698                                  const u8 *tsc, gfp_t gfp)
16699 {
16700         struct sk_buff *msg;
16701         void *hdr;
16702
16703         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16704         if (!msg)
16705                 return;
16706
16707         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16708         if (!hdr) {
16709                 nlmsg_free(msg);
16710                 return;
16711         }
16712
16713         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16714             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16715             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16716             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16717             (key_id != -1 &&
16718              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16719             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16720                 goto nla_put_failure;
16721
16722         genlmsg_end(msg, hdr);
16723
16724         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16725                                 NL80211_MCGRP_MLME, gfp);
16726         return;
16727
16728  nla_put_failure:
16729         nlmsg_free(msg);
16730 }
16731
16732 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16733                                     struct ieee80211_channel *channel_before,
16734                                     struct ieee80211_channel *channel_after)
16735 {
16736         struct sk_buff *msg;
16737         void *hdr;
16738         struct nlattr *nl_freq;
16739
16740         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16741         if (!msg)
16742                 return;
16743
16744         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16745         if (!hdr) {
16746                 nlmsg_free(msg);
16747                 return;
16748         }
16749
16750         /*
16751          * Since we are applying the beacon hint to a wiphy we know its
16752          * wiphy_idx is valid
16753          */
16754         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16755                 goto nla_put_failure;
16756
16757         /* Before */
16758         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16759         if (!nl_freq)
16760                 goto nla_put_failure;
16761
16762         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16763                 goto nla_put_failure;
16764         nla_nest_end(msg, nl_freq);
16765
16766         /* After */
16767         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16768         if (!nl_freq)
16769                 goto nla_put_failure;
16770
16771         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16772                 goto nla_put_failure;
16773         nla_nest_end(msg, nl_freq);
16774
16775         genlmsg_end(msg, hdr);
16776
16777         rcu_read_lock();
16778         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16779                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16780         rcu_read_unlock();
16781
16782         return;
16783
16784 nla_put_failure:
16785         nlmsg_free(msg);
16786 }
16787
16788 static void nl80211_send_remain_on_chan_event(
16789         int cmd, struct cfg80211_registered_device *rdev,
16790         struct wireless_dev *wdev, u64 cookie,
16791         struct ieee80211_channel *chan,
16792         unsigned int duration, gfp_t gfp)
16793 {
16794         struct sk_buff *msg;
16795         void *hdr;
16796
16797         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16798         if (!msg)
16799                 return;
16800
16801         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16802         if (!hdr) {
16803                 nlmsg_free(msg);
16804                 return;
16805         }
16806
16807         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16808             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16809                                          wdev->netdev->ifindex)) ||
16810             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16811                               NL80211_ATTR_PAD) ||
16812             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16813             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16814                         NL80211_CHAN_NO_HT) ||
16815             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16816                               NL80211_ATTR_PAD))
16817                 goto nla_put_failure;
16818
16819         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16820             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16821                 goto nla_put_failure;
16822
16823         genlmsg_end(msg, hdr);
16824
16825         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16826                                 NL80211_MCGRP_MLME, gfp);
16827         return;
16828
16829  nla_put_failure:
16830         nlmsg_free(msg);
16831 }
16832
16833 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16834                                struct ieee80211_channel *chan,
16835                                unsigned int duration, gfp_t gfp)
16836 {
16837         struct wiphy *wiphy = wdev->wiphy;
16838         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16839
16840         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16841         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16842                                           rdev, wdev, cookie, chan,
16843                                           duration, gfp);
16844 }
16845 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16846
16847 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16848                                         struct ieee80211_channel *chan,
16849                                         gfp_t gfp)
16850 {
16851         struct wiphy *wiphy = wdev->wiphy;
16852         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16853
16854         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16855         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16856                                           rdev, wdev, cookie, chan, 0, gfp);
16857 }
16858 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16859
16860 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16861                                         struct ieee80211_channel *chan,
16862                                         gfp_t gfp)
16863 {
16864         struct wiphy *wiphy = wdev->wiphy;
16865         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16866
16867         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16868         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16869                                           rdev, wdev, cookie, chan, 0, gfp);
16870 }
16871 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16872
16873 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16874                       struct station_info *sinfo, gfp_t gfp)
16875 {
16876         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16877         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16878         struct sk_buff *msg;
16879
16880         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16881
16882         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16883         if (!msg)
16884                 return;
16885
16886         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16887                                  rdev, dev, mac_addr, sinfo) < 0) {
16888                 nlmsg_free(msg);
16889                 return;
16890         }
16891
16892         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16893                                 NL80211_MCGRP_MLME, gfp);
16894 }
16895 EXPORT_SYMBOL(cfg80211_new_sta);
16896
16897 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16898                             struct station_info *sinfo, gfp_t gfp)
16899 {
16900         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16901         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16902         struct sk_buff *msg;
16903         struct station_info empty_sinfo = {};
16904
16905         if (!sinfo)
16906                 sinfo = &empty_sinfo;
16907
16908         trace_cfg80211_del_sta(dev, mac_addr);
16909
16910         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16911         if (!msg) {
16912                 cfg80211_sinfo_release_content(sinfo);
16913                 return;
16914         }
16915
16916         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16917                                  rdev, dev, mac_addr, sinfo) < 0) {
16918                 nlmsg_free(msg);
16919                 return;
16920         }
16921
16922         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16923                                 NL80211_MCGRP_MLME, gfp);
16924 }
16925 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16926
16927 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16928                           enum nl80211_connect_failed_reason reason,
16929                           gfp_t gfp)
16930 {
16931         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16932         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16933         struct sk_buff *msg;
16934         void *hdr;
16935
16936         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16937         if (!msg)
16938                 return;
16939
16940         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16941         if (!hdr) {
16942                 nlmsg_free(msg);
16943                 return;
16944         }
16945
16946         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16947             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16948             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16949                 goto nla_put_failure;
16950
16951         genlmsg_end(msg, hdr);
16952
16953         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16954                                 NL80211_MCGRP_MLME, gfp);
16955         return;
16956
16957  nla_put_failure:
16958         nlmsg_free(msg);
16959 }
16960 EXPORT_SYMBOL(cfg80211_conn_failed);
16961
16962 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16963                                        const u8 *addr, gfp_t gfp)
16964 {
16965         struct wireless_dev *wdev = dev->ieee80211_ptr;
16966         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16967         struct sk_buff *msg;
16968         void *hdr;
16969         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16970
16971         if (!nlportid)
16972                 return false;
16973
16974         msg = nlmsg_new(100, gfp);
16975         if (!msg)
16976                 return true;
16977
16978         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16979         if (!hdr) {
16980                 nlmsg_free(msg);
16981                 return true;
16982         }
16983
16984         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16985             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16986             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16987                 goto nla_put_failure;
16988
16989         genlmsg_end(msg, hdr);
16990         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16991         return true;
16992
16993  nla_put_failure:
16994         nlmsg_free(msg);
16995         return true;
16996 }
16997
16998 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16999                                 const u8 *addr, gfp_t gfp)
17000 {
17001         struct wireless_dev *wdev = dev->ieee80211_ptr;
17002         bool ret;
17003
17004         trace_cfg80211_rx_spurious_frame(dev, addr);
17005
17006         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
17007                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
17008                 trace_cfg80211_return_bool(false);
17009                 return false;
17010         }
17011         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
17012                                          addr, gfp);
17013         trace_cfg80211_return_bool(ret);
17014         return ret;
17015 }
17016 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
17017
17018 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
17019                                         const u8 *addr, gfp_t gfp)
17020 {
17021         struct wireless_dev *wdev = dev->ieee80211_ptr;
17022         bool ret;
17023
17024         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
17025
17026         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
17027                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
17028                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
17029                 trace_cfg80211_return_bool(false);
17030                 return false;
17031         }
17032         ret = __nl80211_unexpected_frame(dev,
17033                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
17034                                          addr, gfp);
17035         trace_cfg80211_return_bool(ret);
17036         return ret;
17037 }
17038 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
17039
17040 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
17041                       struct wireless_dev *wdev, u32 nlportid,
17042                       int freq, int sig_dbm,
17043                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
17044 {
17045         struct net_device *netdev = wdev->netdev;
17046         struct sk_buff *msg;
17047         void *hdr;
17048
17049         msg = nlmsg_new(100 + len, gfp);
17050         if (!msg)
17051                 return -ENOMEM;
17052
17053         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17054         if (!hdr) {
17055                 nlmsg_free(msg);
17056                 return -ENOMEM;
17057         }
17058
17059         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17060             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17061                                         netdev->ifindex)) ||
17062             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17063                               NL80211_ATTR_PAD) ||
17064             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
17065             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
17066             (sig_dbm &&
17067              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17068             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17069             (flags &&
17070              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
17071                 goto nla_put_failure;
17072
17073         genlmsg_end(msg, hdr);
17074
17075         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17076
17077  nla_put_failure:
17078         nlmsg_free(msg);
17079         return -ENOBUFS;
17080 }
17081
17082 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
17083                                     const u8 *buf, size_t len, bool ack,
17084                                     gfp_t gfp, enum nl80211_commands command)
17085 {
17086         struct wiphy *wiphy = wdev->wiphy;
17087         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17088         struct net_device *netdev = wdev->netdev;
17089         struct sk_buff *msg;
17090         void *hdr;
17091
17092         if (command == NL80211_CMD_FRAME_TX_STATUS)
17093                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
17094         else
17095                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
17096
17097         msg = nlmsg_new(100 + len, gfp);
17098         if (!msg)
17099                 return;
17100
17101         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
17102         if (!hdr) {
17103                 nlmsg_free(msg);
17104                 return;
17105         }
17106
17107         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17108             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17109                                    netdev->ifindex)) ||
17110             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17111                               NL80211_ATTR_PAD) ||
17112             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17113             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17114                               NL80211_ATTR_PAD) ||
17115             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
17116                 goto nla_put_failure;
17117
17118         genlmsg_end(msg, hdr);
17119
17120         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17121                                 NL80211_MCGRP_MLME, gfp);
17122         return;
17123
17124 nla_put_failure:
17125         nlmsg_free(msg);
17126 }
17127
17128 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
17129                                      const u8 *buf, size_t len, bool ack,
17130                                      gfp_t gfp)
17131 {
17132         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
17133                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
17134 }
17135 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
17136
17137 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
17138                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
17139 {
17140         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
17141                                 NL80211_CMD_FRAME_TX_STATUS);
17142 }
17143 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
17144
17145 static int __nl80211_rx_control_port(struct net_device *dev,
17146                                      struct sk_buff *skb,
17147                                      bool unencrypted, gfp_t gfp)
17148 {
17149         struct wireless_dev *wdev = dev->ieee80211_ptr;
17150         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17151         struct ethhdr *ehdr = eth_hdr(skb);
17152         const u8 *addr = ehdr->h_source;
17153         u16 proto = be16_to_cpu(skb->protocol);
17154         struct sk_buff *msg;
17155         void *hdr;
17156         struct nlattr *frame;
17157
17158         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
17159
17160         if (!nlportid)
17161                 return -ENOENT;
17162
17163         msg = nlmsg_new(100 + skb->len, gfp);
17164         if (!msg)
17165                 return -ENOMEM;
17166
17167         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
17168         if (!hdr) {
17169                 nlmsg_free(msg);
17170                 return -ENOBUFS;
17171         }
17172
17173         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17174             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17175             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17176                               NL80211_ATTR_PAD) ||
17177             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17178             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
17179             (unencrypted && nla_put_flag(msg,
17180                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
17181                 goto nla_put_failure;
17182
17183         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
17184         if (!frame)
17185                 goto nla_put_failure;
17186
17187         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
17188         genlmsg_end(msg, hdr);
17189
17190         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17191
17192  nla_put_failure:
17193         nlmsg_free(msg);
17194         return -ENOBUFS;
17195 }
17196
17197 bool cfg80211_rx_control_port(struct net_device *dev,
17198                               struct sk_buff *skb, bool unencrypted)
17199 {
17200         int ret;
17201
17202         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
17203         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
17204         trace_cfg80211_return_bool(ret == 0);
17205         return ret == 0;
17206 }
17207 EXPORT_SYMBOL(cfg80211_rx_control_port);
17208
17209 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
17210                                             const char *mac, gfp_t gfp)
17211 {
17212         struct wireless_dev *wdev = dev->ieee80211_ptr;
17213         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17214         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17215         void **cb;
17216
17217         if (!msg)
17218                 return NULL;
17219
17220         cb = (void **)msg->cb;
17221
17222         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
17223         if (!cb[0]) {
17224                 nlmsg_free(msg);
17225                 return NULL;
17226         }
17227
17228         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17229             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17230                 goto nla_put_failure;
17231
17232         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17233                 goto nla_put_failure;
17234
17235         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17236         if (!cb[1])
17237                 goto nla_put_failure;
17238
17239         cb[2] = rdev;
17240
17241         return msg;
17242  nla_put_failure:
17243         nlmsg_free(msg);
17244         return NULL;
17245 }
17246
17247 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17248 {
17249         void **cb = (void **)msg->cb;
17250         struct cfg80211_registered_device *rdev = cb[2];
17251
17252         nla_nest_end(msg, cb[1]);
17253         genlmsg_end(msg, cb[0]);
17254
17255         memset(msg->cb, 0, sizeof(msg->cb));
17256
17257         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17258                                 NL80211_MCGRP_MLME, gfp);
17259 }
17260
17261 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17262                               enum nl80211_cqm_rssi_threshold_event rssi_event,
17263                               s32 rssi_level, gfp_t gfp)
17264 {
17265         struct sk_buff *msg;
17266         struct wireless_dev *wdev = dev->ieee80211_ptr;
17267         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17268
17269         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17270
17271         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17272                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17273                 return;
17274
17275         if (wdev->cqm_config) {
17276                 wdev->cqm_config->last_rssi_event_value = rssi_level;
17277
17278                 cfg80211_cqm_rssi_update(rdev, dev);
17279
17280                 if (rssi_level == 0)
17281                         rssi_level = wdev->cqm_config->last_rssi_event_value;
17282         }
17283
17284         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17285         if (!msg)
17286                 return;
17287
17288         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17289                         rssi_event))
17290                 goto nla_put_failure;
17291
17292         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17293                                       rssi_level))
17294                 goto nla_put_failure;
17295
17296         cfg80211_send_cqm(msg, gfp);
17297
17298         return;
17299
17300  nla_put_failure:
17301         nlmsg_free(msg);
17302 }
17303 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17304
17305 void cfg80211_cqm_txe_notify(struct net_device *dev,
17306                              const u8 *peer, u32 num_packets,
17307                              u32 rate, u32 intvl, gfp_t gfp)
17308 {
17309         struct sk_buff *msg;
17310
17311         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17312         if (!msg)
17313                 return;
17314
17315         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17316                 goto nla_put_failure;
17317
17318         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17319                 goto nla_put_failure;
17320
17321         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17322                 goto nla_put_failure;
17323
17324         cfg80211_send_cqm(msg, gfp);
17325         return;
17326
17327  nla_put_failure:
17328         nlmsg_free(msg);
17329 }
17330 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17331
17332 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17333                                  const u8 *peer, u32 num_packets, gfp_t gfp)
17334 {
17335         struct sk_buff *msg;
17336
17337         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17338
17339         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17340         if (!msg)
17341                 return;
17342
17343         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17344                 goto nla_put_failure;
17345
17346         cfg80211_send_cqm(msg, gfp);
17347         return;
17348
17349  nla_put_failure:
17350         nlmsg_free(msg);
17351 }
17352 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17353
17354 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17355 {
17356         struct sk_buff *msg;
17357
17358         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17359         if (!msg)
17360                 return;
17361
17362         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17363                 goto nla_put_failure;
17364
17365         cfg80211_send_cqm(msg, gfp);
17366         return;
17367
17368  nla_put_failure:
17369         nlmsg_free(msg);
17370 }
17371 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17372
17373 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17374                                      struct net_device *netdev, const u8 *bssid,
17375                                      const u8 *replay_ctr, gfp_t gfp)
17376 {
17377         struct sk_buff *msg;
17378         struct nlattr *rekey_attr;
17379         void *hdr;
17380
17381         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17382         if (!msg)
17383                 return;
17384
17385         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17386         if (!hdr) {
17387                 nlmsg_free(msg);
17388                 return;
17389         }
17390
17391         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17392             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17393             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17394                 goto nla_put_failure;
17395
17396         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17397         if (!rekey_attr)
17398                 goto nla_put_failure;
17399
17400         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17401                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17402                 goto nla_put_failure;
17403
17404         nla_nest_end(msg, rekey_attr);
17405
17406         genlmsg_end(msg, hdr);
17407
17408         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17409                                 NL80211_MCGRP_MLME, gfp);
17410         return;
17411
17412  nla_put_failure:
17413         nlmsg_free(msg);
17414 }
17415
17416 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17417                                const u8 *replay_ctr, gfp_t gfp)
17418 {
17419         struct wireless_dev *wdev = dev->ieee80211_ptr;
17420         struct wiphy *wiphy = wdev->wiphy;
17421         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17422
17423         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17424         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17425 }
17426 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17427
17428 static void
17429 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17430                                struct net_device *netdev, int index,
17431                                const u8 *bssid, bool preauth, gfp_t gfp)
17432 {
17433         struct sk_buff *msg;
17434         struct nlattr *attr;
17435         void *hdr;
17436
17437         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17438         if (!msg)
17439                 return;
17440
17441         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17442         if (!hdr) {
17443                 nlmsg_free(msg);
17444                 return;
17445         }
17446
17447         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17448             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17449                 goto nla_put_failure;
17450
17451         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17452         if (!attr)
17453                 goto nla_put_failure;
17454
17455         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17456             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17457             (preauth &&
17458              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17459                 goto nla_put_failure;
17460
17461         nla_nest_end(msg, attr);
17462
17463         genlmsg_end(msg, hdr);
17464
17465         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17466                                 NL80211_MCGRP_MLME, gfp);
17467         return;
17468
17469  nla_put_failure:
17470         nlmsg_free(msg);
17471 }
17472
17473 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17474                                      const u8 *bssid, bool preauth, gfp_t gfp)
17475 {
17476         struct wireless_dev *wdev = dev->ieee80211_ptr;
17477         struct wiphy *wiphy = wdev->wiphy;
17478         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17479
17480         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17481         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17482 }
17483 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17484
17485 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17486                                      struct net_device *netdev,
17487                                      struct cfg80211_chan_def *chandef,
17488                                      gfp_t gfp,
17489                                      enum nl80211_commands notif,
17490                                      u8 count, bool quiet)
17491 {
17492         struct sk_buff *msg;
17493         void *hdr;
17494
17495         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17496         if (!msg)
17497                 return;
17498
17499         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17500         if (!hdr) {
17501                 nlmsg_free(msg);
17502                 return;
17503         }
17504
17505         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17506                 goto nla_put_failure;
17507
17508         if (nl80211_send_chandef(msg, chandef))
17509                 goto nla_put_failure;
17510
17511         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17512                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17513                         goto nla_put_failure;
17514                 if (quiet &&
17515                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17516                         goto nla_put_failure;
17517         }
17518
17519         genlmsg_end(msg, hdr);
17520
17521         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17522                                 NL80211_MCGRP_MLME, gfp);
17523         return;
17524
17525  nla_put_failure:
17526         nlmsg_free(msg);
17527 }
17528
17529 void cfg80211_ch_switch_notify(struct net_device *dev,
17530                                struct cfg80211_chan_def *chandef)
17531 {
17532         struct wireless_dev *wdev = dev->ieee80211_ptr;
17533         struct wiphy *wiphy = wdev->wiphy;
17534         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17535
17536         ASSERT_WDEV_LOCK(wdev);
17537
17538         trace_cfg80211_ch_switch_notify(dev, chandef);
17539
17540         wdev->chandef = *chandef;
17541         wdev->preset_chandef = *chandef;
17542
17543         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
17544              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
17545             !WARN_ON(!wdev->current_bss))
17546                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17547
17548         cfg80211_sched_dfs_chan_update(rdev);
17549
17550         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17551                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17552 }
17553 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17554
17555 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17556                                        struct cfg80211_chan_def *chandef,
17557                                        u8 count, bool quiet)
17558 {
17559         struct wireless_dev *wdev = dev->ieee80211_ptr;
17560         struct wiphy *wiphy = wdev->wiphy;
17561         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17562
17563         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17564
17565         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17566                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17567                                  count, quiet);
17568 }
17569 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17570
17571 int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
17572                               enum nl80211_commands cmd, u8 count,
17573                               u64 color_bitmap)
17574 {
17575         struct wireless_dev *wdev = dev->ieee80211_ptr;
17576         struct wiphy *wiphy = wdev->wiphy;
17577         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17578         struct sk_buff *msg;
17579         void *hdr;
17580
17581         ASSERT_WDEV_LOCK(wdev);
17582
17583         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
17584
17585         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17586         if (!msg)
17587                 return -ENOMEM;
17588
17589         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17590         if (!hdr)
17591                 goto nla_put_failure;
17592
17593         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17594                 goto nla_put_failure;
17595
17596         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
17597             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
17598                 goto nla_put_failure;
17599
17600         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
17601             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
17602                               color_bitmap, NL80211_ATTR_PAD))
17603                 goto nla_put_failure;
17604
17605         genlmsg_end(msg, hdr);
17606
17607         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
17608                                        msg, 0, NL80211_MCGRP_MLME, gfp);
17609
17610 nla_put_failure:
17611         nlmsg_free(msg);
17612         return -EINVAL;
17613 }
17614 EXPORT_SYMBOL(cfg80211_bss_color_notify);
17615
17616 void
17617 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17618                      const struct cfg80211_chan_def *chandef,
17619                      enum nl80211_radar_event event,
17620                      struct net_device *netdev, gfp_t gfp)
17621 {
17622         struct sk_buff *msg;
17623         void *hdr;
17624
17625         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17626         if (!msg)
17627                 return;
17628
17629         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17630         if (!hdr) {
17631                 nlmsg_free(msg);
17632                 return;
17633         }
17634
17635         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17636                 goto nla_put_failure;
17637
17638         /* NOP and radar events don't need a netdev parameter */
17639         if (netdev) {
17640                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17641
17642                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17643                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17644                                       NL80211_ATTR_PAD))
17645                         goto nla_put_failure;
17646         }
17647
17648         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17649                 goto nla_put_failure;
17650
17651         if (nl80211_send_chandef(msg, chandef))
17652                 goto nla_put_failure;
17653
17654         genlmsg_end(msg, hdr);
17655
17656         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17657                                 NL80211_MCGRP_MLME, gfp);
17658         return;
17659
17660  nla_put_failure:
17661         nlmsg_free(msg);
17662 }
17663
17664 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17665                                        struct sta_opmode_info *sta_opmode,
17666                                        gfp_t gfp)
17667 {
17668         struct sk_buff *msg;
17669         struct wireless_dev *wdev = dev->ieee80211_ptr;
17670         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17671         void *hdr;
17672
17673         if (WARN_ON(!mac))
17674                 return;
17675
17676         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17677         if (!msg)
17678                 return;
17679
17680         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17681         if (!hdr) {
17682                 nlmsg_free(msg);
17683                 return;
17684         }
17685
17686         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17687                 goto nla_put_failure;
17688
17689         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17690                 goto nla_put_failure;
17691
17692         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17693                 goto nla_put_failure;
17694
17695         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17696             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17697                 goto nla_put_failure;
17698
17699         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17700             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17701                 goto nla_put_failure;
17702
17703         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17704             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17705                 goto nla_put_failure;
17706
17707         genlmsg_end(msg, hdr);
17708
17709         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17710                                 NL80211_MCGRP_MLME, gfp);
17711
17712         return;
17713
17714 nla_put_failure:
17715         nlmsg_free(msg);
17716 }
17717 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17718
17719 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17720                            u64 cookie, bool acked, s32 ack_signal,
17721                            bool is_valid_ack_signal, gfp_t gfp)
17722 {
17723         struct wireless_dev *wdev = dev->ieee80211_ptr;
17724         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17725         struct sk_buff *msg;
17726         void *hdr;
17727
17728         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17729
17730         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17731
17732         if (!msg)
17733                 return;
17734
17735         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17736         if (!hdr) {
17737                 nlmsg_free(msg);
17738                 return;
17739         }
17740
17741         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17742             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17743             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17744             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17745                               NL80211_ATTR_PAD) ||
17746             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17747             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17748                                                 ack_signal)))
17749                 goto nla_put_failure;
17750
17751         genlmsg_end(msg, hdr);
17752
17753         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17754                                 NL80211_MCGRP_MLME, gfp);
17755         return;
17756
17757  nla_put_failure:
17758         nlmsg_free(msg);
17759 }
17760 EXPORT_SYMBOL(cfg80211_probe_status);
17761
17762 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17763                                      size_t len, int freq, int sig_dbm)
17764 {
17765         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17766         struct sk_buff *msg;
17767         void *hdr;
17768         struct cfg80211_beacon_registration *reg;
17769
17770         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17771
17772         spin_lock_bh(&rdev->beacon_registrations_lock);
17773         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17774                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17775                 if (!msg) {
17776                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17777                         return;
17778                 }
17779
17780                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17781                 if (!hdr)
17782                         goto nla_put_failure;
17783
17784                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17785                     (freq &&
17786                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17787                                   KHZ_TO_MHZ(freq)) ||
17788                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17789                                   freq % 1000))) ||
17790                     (sig_dbm &&
17791                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17792                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17793                         goto nla_put_failure;
17794
17795                 genlmsg_end(msg, hdr);
17796
17797                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17798         }
17799         spin_unlock_bh(&rdev->beacon_registrations_lock);
17800         return;
17801
17802  nla_put_failure:
17803         spin_unlock_bh(&rdev->beacon_registrations_lock);
17804         nlmsg_free(msg);
17805 }
17806 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17807
17808 #ifdef CONFIG_PM
17809 static int cfg80211_net_detect_results(struct sk_buff *msg,
17810                                        struct cfg80211_wowlan_wakeup *wakeup)
17811 {
17812         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17813         struct nlattr *nl_results, *nl_match, *nl_freqs;
17814         int i, j;
17815
17816         nl_results = nla_nest_start_noflag(msg,
17817                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17818         if (!nl_results)
17819                 return -EMSGSIZE;
17820
17821         for (i = 0; i < nd->n_matches; i++) {
17822                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17823
17824                 nl_match = nla_nest_start_noflag(msg, i);
17825                 if (!nl_match)
17826                         break;
17827
17828                 /* The SSID attribute is optional in nl80211, but for
17829                  * simplicity reasons it's always present in the
17830                  * cfg80211 structure.  If a driver can't pass the
17831                  * SSID, that needs to be changed.  A zero length SSID
17832                  * is still a valid SSID (wildcard), so it cannot be
17833                  * used for this purpose.
17834                  */
17835                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17836                             match->ssid.ssid)) {
17837                         nla_nest_cancel(msg, nl_match);
17838                         goto out;
17839                 }
17840
17841                 if (match->n_channels) {
17842                         nl_freqs = nla_nest_start_noflag(msg,
17843                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17844                         if (!nl_freqs) {
17845                                 nla_nest_cancel(msg, nl_match);
17846                                 goto out;
17847                         }
17848
17849                         for (j = 0; j < match->n_channels; j++) {
17850                                 if (nla_put_u32(msg, j, match->channels[j])) {
17851                                         nla_nest_cancel(msg, nl_freqs);
17852                                         nla_nest_cancel(msg, nl_match);
17853                                         goto out;
17854                                 }
17855                         }
17856
17857                         nla_nest_end(msg, nl_freqs);
17858                 }
17859
17860                 nla_nest_end(msg, nl_match);
17861         }
17862
17863 out:
17864         nla_nest_end(msg, nl_results);
17865         return 0;
17866 }
17867
17868 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17869                                    struct cfg80211_wowlan_wakeup *wakeup,
17870                                    gfp_t gfp)
17871 {
17872         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17873         struct sk_buff *msg;
17874         void *hdr;
17875         int size = 200;
17876
17877         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17878
17879         if (wakeup)
17880                 size += wakeup->packet_present_len;
17881
17882         msg = nlmsg_new(size, gfp);
17883         if (!msg)
17884                 return;
17885
17886         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17887         if (!hdr)
17888                 goto free_msg;
17889
17890         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17891             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17892                               NL80211_ATTR_PAD))
17893                 goto free_msg;
17894
17895         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17896                                         wdev->netdev->ifindex))
17897                 goto free_msg;
17898
17899         if (wakeup) {
17900                 struct nlattr *reasons;
17901
17902                 reasons = nla_nest_start_noflag(msg,
17903                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17904                 if (!reasons)
17905                         goto free_msg;
17906
17907                 if (wakeup->disconnect &&
17908                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17909                         goto free_msg;
17910                 if (wakeup->magic_pkt &&
17911                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17912                         goto free_msg;
17913                 if (wakeup->gtk_rekey_failure &&
17914                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17915                         goto free_msg;
17916                 if (wakeup->eap_identity_req &&
17917                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17918                         goto free_msg;
17919                 if (wakeup->four_way_handshake &&
17920                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17921                         goto free_msg;
17922                 if (wakeup->rfkill_release &&
17923                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17924                         goto free_msg;
17925
17926                 if (wakeup->pattern_idx >= 0 &&
17927                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17928                                 wakeup->pattern_idx))
17929                         goto free_msg;
17930
17931                 if (wakeup->tcp_match &&
17932                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17933                         goto free_msg;
17934
17935                 if (wakeup->tcp_connlost &&
17936                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17937                         goto free_msg;
17938
17939                 if (wakeup->tcp_nomoretokens &&
17940                     nla_put_flag(msg,
17941                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17942                         goto free_msg;
17943
17944                 if (wakeup->packet) {
17945                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17946                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17947
17948                         if (!wakeup->packet_80211) {
17949                                 pkt_attr =
17950                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17951                                 len_attr =
17952                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17953                         }
17954
17955                         if (wakeup->packet_len &&
17956                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17957                                 goto free_msg;
17958
17959                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17960                                     wakeup->packet))
17961                                 goto free_msg;
17962                 }
17963
17964                 if (wakeup->net_detect &&
17965                     cfg80211_net_detect_results(msg, wakeup))
17966                                 goto free_msg;
17967
17968                 nla_nest_end(msg, reasons);
17969         }
17970
17971         genlmsg_end(msg, hdr);
17972
17973         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17974                                 NL80211_MCGRP_MLME, gfp);
17975         return;
17976
17977  free_msg:
17978         nlmsg_free(msg);
17979 }
17980 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17981 #endif
17982
17983 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17984                                 enum nl80211_tdls_operation oper,
17985                                 u16 reason_code, gfp_t gfp)
17986 {
17987         struct wireless_dev *wdev = dev->ieee80211_ptr;
17988         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17989         struct sk_buff *msg;
17990         void *hdr;
17991
17992         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17993                                          reason_code);
17994
17995         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17996         if (!msg)
17997                 return;
17998
17999         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
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, dev->ifindex) ||
18007             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
18008             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
18009             (reason_code > 0 &&
18010              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
18011                 goto nla_put_failure;
18012
18013         genlmsg_end(msg, hdr);
18014
18015         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18016                                 NL80211_MCGRP_MLME, gfp);
18017         return;
18018
18019  nla_put_failure:
18020         nlmsg_free(msg);
18021 }
18022 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
18023
18024 static int nl80211_netlink_notify(struct notifier_block * nb,
18025                                   unsigned long state,
18026                                   void *_notify)
18027 {
18028         struct netlink_notify *notify = _notify;
18029         struct cfg80211_registered_device *rdev;
18030         struct wireless_dev *wdev;
18031         struct cfg80211_beacon_registration *reg, *tmp;
18032
18033         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
18034                 return NOTIFY_DONE;
18035
18036         rcu_read_lock();
18037
18038         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
18039                 struct cfg80211_sched_scan_request *sched_scan_req;
18040
18041                 list_for_each_entry_rcu(sched_scan_req,
18042                                         &rdev->sched_scan_req_list,
18043                                         list) {
18044                         if (sched_scan_req->owner_nlportid == notify->portid) {
18045                                 sched_scan_req->nl_owner_dead = true;
18046                                 schedule_work(&rdev->sched_scan_stop_wk);
18047                         }
18048                 }
18049
18050                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
18051                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
18052
18053                         if (wdev->owner_nlportid == notify->portid) {
18054                                 wdev->nl_owner_dead = true;
18055                                 schedule_work(&rdev->destroy_work);
18056                         } else if (wdev->conn_owner_nlportid == notify->portid) {
18057                                 schedule_work(&wdev->disconnect_wk);
18058                         }
18059
18060                         cfg80211_release_pmsr(wdev, notify->portid);
18061                 }
18062
18063                 spin_lock_bh(&rdev->beacon_registrations_lock);
18064                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
18065                                          list) {
18066                         if (reg->nlportid == notify->portid) {
18067                                 list_del(&reg->list);
18068                                 kfree(reg);
18069                                 break;
18070                         }
18071                 }
18072                 spin_unlock_bh(&rdev->beacon_registrations_lock);
18073         }
18074
18075         rcu_read_unlock();
18076
18077         /*
18078          * It is possible that the user space process that is controlling the
18079          * indoor setting disappeared, so notify the regulatory core.
18080          */
18081         regulatory_netlink_notify(notify->portid);
18082         return NOTIFY_OK;
18083 }
18084
18085 static struct notifier_block nl80211_netlink_notifier = {
18086         .notifier_call = nl80211_netlink_notify,
18087 };
18088
18089 void cfg80211_ft_event(struct net_device *netdev,
18090                        struct cfg80211_ft_event_params *ft_event)
18091 {
18092         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18093         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18094         struct sk_buff *msg;
18095         void *hdr;
18096
18097         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
18098
18099         if (!ft_event->target_ap)
18100                 return;
18101
18102         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
18103                         GFP_KERNEL);
18104         if (!msg)
18105                 return;
18106
18107         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
18108         if (!hdr)
18109                 goto out;
18110
18111         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18112             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18113             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
18114                 goto out;
18115
18116         if (ft_event->ies &&
18117             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
18118                 goto out;
18119         if (ft_event->ric_ies &&
18120             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
18121                     ft_event->ric_ies))
18122                 goto out;
18123
18124         genlmsg_end(msg, hdr);
18125
18126         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18127                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18128         return;
18129  out:
18130         nlmsg_free(msg);
18131 }
18132 EXPORT_SYMBOL(cfg80211_ft_event);
18133
18134 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
18135 {
18136         struct cfg80211_registered_device *rdev;
18137         struct sk_buff *msg;
18138         void *hdr;
18139         u32 nlportid;
18140
18141         rdev = wiphy_to_rdev(wdev->wiphy);
18142         if (!rdev->crit_proto_nlportid)
18143                 return;
18144
18145         nlportid = rdev->crit_proto_nlportid;
18146         rdev->crit_proto_nlportid = 0;
18147
18148         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18149         if (!msg)
18150                 return;
18151
18152         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
18153         if (!hdr)
18154                 goto nla_put_failure;
18155
18156         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18157             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18158                               NL80211_ATTR_PAD))
18159                 goto nla_put_failure;
18160
18161         genlmsg_end(msg, hdr);
18162
18163         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18164         return;
18165
18166  nla_put_failure:
18167         nlmsg_free(msg);
18168 }
18169 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
18170
18171 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
18172 {
18173         struct wiphy *wiphy = wdev->wiphy;
18174         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18175         struct sk_buff *msg;
18176         void *hdr;
18177
18178         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18179         if (!msg)
18180                 return;
18181
18182         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
18183         if (!hdr)
18184                 goto out;
18185
18186         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18187             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
18188             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18189                               NL80211_ATTR_PAD))
18190                 goto out;
18191
18192         genlmsg_end(msg, hdr);
18193
18194         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
18195                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18196         return;
18197  out:
18198         nlmsg_free(msg);
18199 }
18200
18201 int cfg80211_external_auth_request(struct net_device *dev,
18202                                    struct cfg80211_external_auth_params *params,
18203                                    gfp_t gfp)
18204 {
18205         struct wireless_dev *wdev = dev->ieee80211_ptr;
18206         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18207         struct sk_buff *msg;
18208         void *hdr;
18209
18210         if (!wdev->conn_owner_nlportid)
18211                 return -EINVAL;
18212
18213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18214         if (!msg)
18215                 return -ENOMEM;
18216
18217         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
18218         if (!hdr)
18219                 goto nla_put_failure;
18220
18221         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18222             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18223             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
18224             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
18225                         params->action) ||
18226             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
18227             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
18228                     params->ssid.ssid))
18229                 goto nla_put_failure;
18230
18231         genlmsg_end(msg, hdr);
18232         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
18233                         wdev->conn_owner_nlportid);
18234         return 0;
18235
18236  nla_put_failure:
18237         nlmsg_free(msg);
18238         return -ENOBUFS;
18239 }
18240 EXPORT_SYMBOL(cfg80211_external_auth_request);
18241
18242 void cfg80211_update_owe_info_event(struct net_device *netdev,
18243                                     struct cfg80211_update_owe_info *owe_info,
18244                                     gfp_t gfp)
18245 {
18246         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18247         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18248         struct sk_buff *msg;
18249         void *hdr;
18250
18251         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
18252
18253         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18254         if (!msg)
18255                 return;
18256
18257         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
18258         if (!hdr)
18259                 goto nla_put_failure;
18260
18261         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18262             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18263             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
18264                 goto nla_put_failure;
18265
18266         if (!owe_info->ie_len ||
18267             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
18268                 goto nla_put_failure;
18269
18270         genlmsg_end(msg, hdr);
18271
18272         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18273                                 NL80211_MCGRP_MLME, gfp);
18274         return;
18275
18276 nla_put_failure:
18277         genlmsg_cancel(msg, hdr);
18278         nlmsg_free(msg);
18279 }
18280 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18281
18282 /* initialisation/exit functions */
18283
18284 int __init nl80211_init(void)
18285 {
18286         int err;
18287
18288         err = genl_register_family(&nl80211_fam);
18289         if (err)
18290                 return err;
18291
18292         err = netlink_register_notifier(&nl80211_netlink_notifier);
18293         if (err)
18294                 goto err_out;
18295
18296         return 0;
18297  err_out:
18298         genl_unregister_family(&nl80211_fam);
18299         return err;
18300 }
18301
18302 void nl80211_exit(void)
18303 {
18304         netlink_unregister_notifier(&nl80211_netlink_notifier);
18305         genl_unregister_family(&nl80211_fam);
18306 }