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) 2018-2020 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 net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  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;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 213         unsigned int fixedlen, hdrlen;
 214
 215         if (s1g_bcn) {
 216                 fixedlen = offsetof(struct ieee80211_ext,
 217                                     u.s1g_beacon.variable);
 218                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 219         } else {
 220                 fixedlen = offsetof(struct ieee80211_mgmt,
 221                                     u.beacon.variable);
 222                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 223         }
 224
 225         if (len < fixedlen)
 226                 goto err;
 227
 228         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 229                 goto err;
 230
 231         data += fixedlen;
 232         len -= fixedlen;
 233
 234         for_each_element(elem, data, len) {
 235                 /* nothing */
 236         }
 237
 238         if (for_each_element_completed(elem, data, len))
 239                 return 0;
 240
 241 err:
 242         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 243         return -EINVAL;
 244 }
 245
 246 static int validate_ie_attr(const struct nlattr *attr,
 247                             struct netlink_ext_ack *extack)
 248 {
 249         const u8 *data = nla_data(attr);
 250         unsigned int len = nla_len(attr);
 251         const struct element *elem;
 252
 253         for_each_element(elem, data, len) {
 254                 /* nothing */
 255         }
 256
 257         if (for_each_element_completed(elem, data, len))
 258                 return 0;
 259
 260         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 261         return -EINVAL;
 262 }
 263
 264 /* policy for the attributes */
 265 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 266
 267 static const struct nla_policy
 268 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 269         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 270         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 271                                         .len = U8_MAX },
 272         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 273                                              .len = U8_MAX },
 274 };
 275
 276 static const struct nla_policy
 277 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 278         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 279         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 280         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 281                 NLA_POLICY_MAX(NLA_U8, 15),
 282         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 283         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 284                 NLA_POLICY_MAX(NLA_U8, 15),
 285         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 286                 NLA_POLICY_MAX(NLA_U8, 31),
 287         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 288         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 289         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 290         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 291         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 292 };
 293
 294 static const struct nla_policy
 295 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 296         [NL80211_PMSR_TYPE_FTM] =
 297                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 298 };
 299
 300 static const struct nla_policy
 301 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 302         [NL80211_PMSR_REQ_ATTR_DATA] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 304         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 310         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 311         [NL80211_PMSR_PEER_ATTR_REQ] =
 312                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 313         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 314 };
 315
 316 static const struct nla_policy
 317 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 318         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 319         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 320         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 321         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 322         [NL80211_PMSR_ATTR_PEERS] =
 323                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 324 };
 325
 326 static const struct nla_policy
 327 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 328         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 329                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 330         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 331                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 332         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 333                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 334         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 335                 NLA_POLICY_EXACT_LEN(8),
 336         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 337                 NLA_POLICY_EXACT_LEN(8),
 338         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 339 };
 340
 341 static const struct nla_policy
 342 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 343         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 344         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 345         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 346 };
 347
 348 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 349         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 350                                     .len = NL80211_MAX_SUPP_RATES },
 351         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 352                                 .len = NL80211_MAX_SUPP_HT_RATES },
 353         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 354         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 355         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 356         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 357                                                    NL80211_RATE_INFO_HE_GI_0_8,
 358                                                    NL80211_RATE_INFO_HE_GI_3_2),
 359         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 360                                                    NL80211_RATE_INFO_HE_1XLTF,
 361                                                    NL80211_RATE_INFO_HE_4XLTF),
 362 };
 363
 364 static const struct nla_policy
 365 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 366         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 367         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 368         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 369         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 370         [NL80211_TID_CONFIG_ATTR_NOACK] =
 371                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 372         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 373         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 374         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 375                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 376         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 377                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 378         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 379                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 380         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 381                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 382         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 383                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 384 };
 385
 386 static const struct nla_policy
 387 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 388         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 389         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 390         NLA_POLICY_RANGE(NLA_BINARY,
 391                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 392                          IEEE80211_MAX_DATA_LEN),
 393 };
 394
 395 static const struct nla_policy
 396 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 397         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 398         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 399                                                        .len = IEEE80211_MAX_DATA_LEN }
 400 };
 401
 402 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 403         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 404         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 405         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 406                                       .len = 20-1 },
 407         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 408
 409         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 410         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 411         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 412                                                 NL80211_EDMG_CHANNELS_MIN,
 413                                                 NL80211_EDMG_CHANNELS_MAX),
 414         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 415                                                 NL80211_EDMG_BW_CONFIG_MIN,
 416                                                 NL80211_EDMG_BW_CONFIG_MAX),
 417
 418         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 419         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 420         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 421         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 422
 423         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 424         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 425         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 426         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 427         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 428         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 429
 430         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 431         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 432         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 433
 434         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 435         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 436
 437         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 438         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 439                                     .len = WLAN_MAX_KEY_LEN },
 440         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 441         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 442         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 443         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 444         [NL80211_ATTR_KEY_TYPE] =
 445                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 446
 447         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 448         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 449         [NL80211_ATTR_BEACON_HEAD] =
 450                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 451                                        IEEE80211_MAX_DATA_LEN),
 452         [NL80211_ATTR_BEACON_TAIL] =
 453                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 454                                        IEEE80211_MAX_DATA_LEN),
 455         [NL80211_ATTR_STA_AID] =
 456                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 457         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 458         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 459         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 460                                                .len = NL80211_MAX_SUPP_RATES },
 461         [NL80211_ATTR_STA_PLINK_ACTION] =
 462                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 463         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 464                 NLA_POLICY_RANGE(NLA_U8,
 465                                  NL80211_TX_POWER_AUTOMATIC,
 466                                  NL80211_TX_POWER_FIXED),
 467         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 468         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 469         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 470         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 471                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 472         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 473
 474         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 475         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 476
 477         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 478         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 479         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 480         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 481                                            .len = NL80211_MAX_SUPP_RATES },
 482         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 483
 484         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 485         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 486
 487         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 488
 489         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 490         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 491                                                    validate_ie_attr,
 492                                                    IEEE80211_MAX_DATA_LEN),
 493         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 494         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 495
 496         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 497                                 .len = IEEE80211_MAX_SSID_LEN },
 498         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 499         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 500         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 501         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 502         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 503                                                   NL80211_MFP_NO,
 504                                                   NL80211_MFP_OPTIONAL),
 505         [NL80211_ATTR_STA_FLAGS2] = {
 506                 .len = sizeof(struct nl80211_sta_flag_update),
 507         },
 508         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 509         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 510         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 511         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 513         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 514         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 515         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 516         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 517         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 518         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 519         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 520         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 521         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 523                                  .len = IEEE80211_MAX_DATA_LEN },
 524         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 525         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 526                                                    NL80211_PS_DISABLED,
 527                                                    NL80211_PS_ENABLED),
 528         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 529         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 530         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 531         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 532         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 533         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 534         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 535         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 536         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 537         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 538         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 539         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 540         [NL80211_ATTR_STA_PLINK_STATE] =
 541                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 542         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 543         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 544         [NL80211_ATTR_MESH_PEER_AID] =
 545                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 546         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 547         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 548         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 549         [NL80211_ATTR_HIDDEN_SSID] =
 550                 NLA_POLICY_RANGE(NLA_U32,
 551                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 552                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 553         [NL80211_ATTR_IE_PROBE_RESP] =
 554                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 555                                        IEEE80211_MAX_DATA_LEN),
 556         [NL80211_ATTR_IE_ASSOC_RESP] =
 557                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 558                                        IEEE80211_MAX_DATA_LEN),
 559         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 560         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 561         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 562         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 563         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 564         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 565         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 568         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 570                                       .len = IEEE80211_MAX_DATA_LEN },
 571         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 572         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 573         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 574                 .len = NL80211_HT_CAPABILITY_LEN
 575         },
 576         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 577         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 578         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 579         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 580         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 581
 582         /* need to include at least Auth Transaction and Status Code */
 583         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 584
 585         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 586         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 587         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 588         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 589         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 590                 NLA_POLICY_RANGE(NLA_U32,
 591                                  NL80211_MESH_POWER_UNKNOWN + 1,
 592                                  NL80211_MESH_POWER_MAX),
 593         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 594         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 595         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 596         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 597         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 598         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 600                 .len = NL80211_VHT_CAPABILITY_LEN,
 601         },
 602         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 603         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 604                                   .len = IEEE80211_MAX_DATA_LEN },
 605         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 606         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 607                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 608         [NL80211_ATTR_PEER_AID] =
 609                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 610         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 611         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 612         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 613         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 614         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 615         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 616         /*
 617          * The value of the Length field of the Supported Operating
 618          * Classes element is between 2 and 253.
 619          */
 620         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 621                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 622         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 623         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 624         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 625         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 626         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 627         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 628                                                   IEEE80211_QOS_MAP_LEN_MIN,
 629                                                   IEEE80211_QOS_MAP_LEN_MAX),
 630         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 631         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 632         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 633         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 634         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 635         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 637         [NL80211_ATTR_USER_PRIO] =
 638                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 639         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 640         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 641         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 642         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 643         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 644         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 645         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 646         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 647         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 648         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 649         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 650                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 651         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 652                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 653         },
 654         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 655         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 656         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 657         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 658         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 659                                     .len = FILS_MAX_KEK_LEN },
 660         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 661         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 662         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 663         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 664         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 665                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 666         },
 667         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 668         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 669                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 670         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 671                                           .len = FILS_ERP_MAX_REALM_LEN },
 672         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 673         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 674                                         .len = FILS_ERP_MAX_RRK_LEN },
 675         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 676         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 677         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 678         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 679         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 680
 681         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 682         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 683         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 684         [NL80211_ATTR_HE_CAPABILITY] =
 685                 NLA_POLICY_RANGE(NLA_BINARY,
 686                                  NL80211_HE_MIN_CAPABILITY_LEN,
 687                                  NL80211_HE_MAX_CAPABILITY_LEN),
 688         [NL80211_ATTR_FTM_RESPONDER] =
 689                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 690         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 691         [NL80211_ATTR_PEER_MEASUREMENTS] =
 692                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 693         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 694         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 695                                         .len = SAE_PASSWORD_MAX_LEN },
 696         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 697         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 698         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 699         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 700         [NL80211_ATTR_TID_CONFIG] =
 701                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 702         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 703         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 704         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 705         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 706         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 707         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 708         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 709                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 710         [NL80211_ATTR_FILS_DISCOVERY] =
 711                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 712         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 713                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 714         [NL80211_ATTR_S1G_CAPABILITY] =
 715                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 716         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 717                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 718 };
 719
 720 /* policy for the key attributes */
 721 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 722         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 723         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 724         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 725         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 726         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 727         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 728         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 729         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 730         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 731 };
 732
 733 /* policy for the key default flags */
 734 static const struct nla_policy
 735 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 736         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 737         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 738 };
 739
 740 #ifdef CONFIG_PM
 741 /* policy for WoWLAN attributes */
 742 static const struct nla_policy
 743 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 744         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 745         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 746         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 747         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 748         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 749         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 750         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 751         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 752         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 753         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 754 };
 755
 756 static const struct nla_policy
 757 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 758         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 759         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 760         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 761         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 762         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 763         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 764         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 765                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 766         },
 767         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 768                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 769         },
 770         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 771         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 772         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 773 };
 774 #endif /* CONFIG_PM */
 775
 776 /* policy for coalesce rule attributes */
 777 static const struct nla_policy
 778 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 779         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 780         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 781                 NLA_POLICY_RANGE(NLA_U32,
 782                                  NL80211_COALESCE_CONDITION_MATCH,
 783                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 784         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 785 };
 786
 787 /* policy for GTK rekey offload attributes */
 788 static const struct nla_policy
 789 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 790         [NL80211_REKEY_DATA_KEK] = {
 791                 .type = NLA_BINARY,
 792                 .len = NL80211_KEK_EXT_LEN
 793         },
 794         [NL80211_REKEY_DATA_KCK] = {
 795                 .type = NLA_BINARY,
 796                 .len = NL80211_KCK_EXT_LEN
 797         },
 798         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 799         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 800 };
 801
 802 static const struct nla_policy
 803 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 804         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 805         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 806         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 807         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 808 };
 809
 810 static const struct nla_policy
 811 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 812         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 813                                                  .len = IEEE80211_MAX_SSID_LEN },
 814         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 815         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 816         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 817                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 818 };
 819
 820 static const struct nla_policy
 821 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 822         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 823         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 824 };
 825
 826 static const struct nla_policy
 827 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 828         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 829         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 830         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 831                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 832         },
 833 };
 834
 835 /* policy for NAN function attributes */
 836 static const struct nla_policy
 837 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 838         [NL80211_NAN_FUNC_TYPE] =
 839                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 840         [NL80211_NAN_FUNC_SERVICE_ID] = {
 841                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 842         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 843         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 844         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 845         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 846         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 847         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 848         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 849         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 850         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 851                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 852         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 853         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 854         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 855         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 856         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 857 };
 858
 859 /* policy for Service Response Filter attributes */
 860 static const struct nla_policy
 861 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 862         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 863         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 864                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 865         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 866         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 867 };
 868
 869 /* policy for packet pattern attributes */
 870 static const struct nla_policy
 871 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 872         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 873         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 874         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 875 };
 876
 877 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 878                               struct cfg80211_registered_device **rdev,
 879                               struct wireless_dev **wdev)
 880 {
 881         int err;
 882
 883         if (!cb->args[0]) {
 884                 struct nlattr **attrbuf;
 885
 886                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 887                                   GFP_KERNEL);
 888                 if (!attrbuf)
 889                         return -ENOMEM;
 890
 891                 err = nlmsg_parse_deprecated(cb->nlh,
 892                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 893                                              attrbuf, nl80211_fam.maxattr,
 894                                              nl80211_policy, NULL);
 895                 if (err) {
 896                         kfree(attrbuf);
 897                         return err;
 898                 }
 899
 900                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 901                                                    attrbuf);
 902                 kfree(attrbuf);
 903                 if (IS_ERR(*wdev))
 904                         return PTR_ERR(*wdev);
 905                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 906                 /* 0 is the first index - add 1 to parse only once */
 907                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 908                 cb->args[1] = (*wdev)->identifier;
 909         } else {
 910                 /* subtract the 1 again here */
 911                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 912                 struct wireless_dev *tmp;
 913
 914                 if (!wiphy)
 915                         return -ENODEV;
 916                 *rdev = wiphy_to_rdev(wiphy);
 917                 *wdev = NULL;
 918
 919                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 920                         if (tmp->identifier == cb->args[1]) {
 921                                 *wdev = tmp;
 922                                 break;
 923                         }
 924                 }
 925
 926                 if (!*wdev)
 927                         return -ENODEV;
 928         }
 929
 930         return 0;
 931 }
 932
 933 /* message building helper */
 934 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 935                      int flags, u8 cmd)
 936 {
 937         /* since there is no private header just add the generic one */
 938         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 939 }
 940
 941 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 942                                      const struct ieee80211_reg_rule *rule)
 943 {
 944         int j;
 945         struct nlattr *nl_wmm_rules =
 946                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 947
 948         if (!nl_wmm_rules)
 949                 goto nla_put_failure;
 950
 951         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 952                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 953
 954                 if (!nl_wmm_rule)
 955                         goto nla_put_failure;
 956
 957                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 958                                 rule->wmm_rule.client[j].cw_min) ||
 959                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 960                                 rule->wmm_rule.client[j].cw_max) ||
 961                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 962                                rule->wmm_rule.client[j].aifsn) ||
 963                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 964                                 rule->wmm_rule.client[j].cot))
 965                         goto nla_put_failure;
 966
 967                 nla_nest_end(msg, nl_wmm_rule);
 968         }
 969         nla_nest_end(msg, nl_wmm_rules);
 970
 971         return 0;
 972
 973 nla_put_failure:
 974         return -ENOBUFS;
 975 }
 976
 977 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 978                                    struct ieee80211_channel *chan,
 979                                    bool large)
 980 {
 981         /* Some channels must be completely excluded from the
 982          * list to protect old user-space tools from breaking
 983          */
 984         if (!large && chan->flags &
 985             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 986                 return 0;
 987         if (!large && chan->freq_offset)
 988                 return 0;
 989
 990         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 991                         chan->center_freq))
 992                 goto nla_put_failure;
 993
 994         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
 995                 goto nla_put_failure;
 996
 997         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 998             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 999                 goto nla_put_failure;
1000         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1001                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1002                         goto nla_put_failure;
1003                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1004                         goto nla_put_failure;
1005         }
1006         if (chan->flags & IEEE80211_CHAN_RADAR) {
1007                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1008                         goto nla_put_failure;
1009                 if (large) {
1010                         u32 time;
1011
1012                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1013
1014                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1015                                         chan->dfs_state))
1016                                 goto nla_put_failure;
1017                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1018                                         time))
1019                                 goto nla_put_failure;
1020                         if (nla_put_u32(msg,
1021                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1022                                         chan->dfs_cac_ms))
1023                                 goto nla_put_failure;
1024                 }
1025         }
1026
1027         if (large) {
1028                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1029                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1030                         goto nla_put_failure;
1031                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1032                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1033                         goto nla_put_failure;
1034                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1035                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1036                         goto nla_put_failure;
1037                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1038                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1039                         goto nla_put_failure;
1040                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1041                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1042                         goto nla_put_failure;
1043                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1044                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1045                         goto nla_put_failure;
1046                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1047                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1048                         goto nla_put_failure;
1049                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1050                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1051                         goto nla_put_failure;
1052                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1053                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1054                         goto nla_put_failure;
1055                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1056                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1057                         goto nla_put_failure;
1058                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1059                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1060                         goto nla_put_failure;
1061                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1062                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1063                         goto nla_put_failure;
1064                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1065                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1066                         goto nla_put_failure;
1067                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1068                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1069                         goto nla_put_failure;
1070         }
1071
1072         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1073                         DBM_TO_MBM(chan->max_power)))
1074                 goto nla_put_failure;
1075
1076         if (large) {
1077                 const struct ieee80211_reg_rule *rule =
1078                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1079
1080                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1081                         if (nl80211_msg_put_wmm_rules(msg, rule))
1082                                 goto nla_put_failure;
1083                 }
1084         }
1085
1086         return 0;
1087
1088  nla_put_failure:
1089         return -ENOBUFS;
1090 }
1091
1092 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1093                                   struct cfg80211_txq_stats *txqstats,
1094                                   int attrtype)
1095 {
1096         struct nlattr *txqattr;
1097
1098 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1099         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1100             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1101                 return false;                                             \
1102         } while (0)
1103
1104         txqattr = nla_nest_start_noflag(msg, attrtype);
1105         if (!txqattr)
1106                 return false;
1107
1108         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1109         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1110         PUT_TXQVAL_U32(FLOWS, flows);
1111         PUT_TXQVAL_U32(DROPS, drops);
1112         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1113         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1114         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1115         PUT_TXQVAL_U32(COLLISIONS, collisions);
1116         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1117         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1118         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1119         nla_nest_end(msg, txqattr);
1120
1121 #undef PUT_TXQVAL_U32
1122         return true;
1123 }
1124
1125 /* netlink command implementations */
1126
1127 struct key_parse {
1128         struct key_params p;
1129         int idx;
1130         int type;
1131         bool def, defmgmt, defbeacon;
1132         bool def_uni, def_multi;
1133 };
1134
1135 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1136                                  struct key_parse *k)
1137 {
1138         struct nlattr *tb[NL80211_KEY_MAX + 1];
1139         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1140                                               nl80211_key_policy,
1141                                               info->extack);
1142         if (err)
1143                 return err;
1144
1145         k->def = !!tb[NL80211_KEY_DEFAULT];
1146         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1147         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1148
1149         if (k->def) {
1150                 k->def_uni = true;
1151                 k->def_multi = true;
1152         }
1153         if (k->defmgmt || k->defbeacon)
1154                 k->def_multi = true;
1155
1156         if (tb[NL80211_KEY_IDX])
1157                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1158
1159         if (tb[NL80211_KEY_DATA]) {
1160                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1161                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1162         }
1163
1164         if (tb[NL80211_KEY_SEQ]) {
1165                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1166                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1167         }
1168
1169         if (tb[NL80211_KEY_CIPHER])
1170                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1171
1172         if (tb[NL80211_KEY_TYPE])
1173                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1174
1175         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1176                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1177
1178                 err = nla_parse_nested_deprecated(kdt,
1179                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1180                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1181                                                   nl80211_key_default_policy,
1182                                                   info->extack);
1183                 if (err)
1184                         return err;
1185
1186                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1187                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1188         }
1189
1190         if (tb[NL80211_KEY_MODE])
1191                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1192
1193         return 0;
1194 }
1195
1196 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1197 {
1198         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1199                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1200                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1201         }
1202
1203         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1204                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1205                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1206         }
1207
1208         if (info->attrs[NL80211_ATTR_KEY_IDX])
1209                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1210
1211         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1212                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1213
1214         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1215         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1216
1217         if (k->def) {
1218                 k->def_uni = true;
1219                 k->def_multi = true;
1220         }
1221         if (k->defmgmt)
1222                 k->def_multi = true;
1223
1224         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1225                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1226
1227         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1228                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1229                 int err = nla_parse_nested_deprecated(kdt,
1230                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1231                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1232                                                       nl80211_key_default_policy,
1233                                                       info->extack);
1234                 if (err)
1235                         return err;
1236
1237                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1238                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1239         }
1240
1241         return 0;
1242 }
1243
1244 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1245 {
1246         int err;
1247
1248         memset(k, 0, sizeof(*k));
1249         k->idx = -1;
1250         k->type = -1;
1251
1252         if (info->attrs[NL80211_ATTR_KEY])
1253                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1254         else
1255                 err = nl80211_parse_key_old(info, k);
1256
1257         if (err)
1258                 return err;
1259
1260         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1261             (k->defbeacon ? 1 : 0) > 1) {
1262                 GENL_SET_ERR_MSG(info,
1263                                  "key with multiple default flags is invalid");
1264                 return -EINVAL;
1265         }
1266
1267         if (k->defmgmt || k->defbeacon) {
1268                 if (k->def_uni || !k->def_multi) {
1269                         GENL_SET_ERR_MSG(info,
1270                                          "defmgmt/defbeacon key must be mcast");
1271                         return -EINVAL;
1272                 }
1273         }
1274
1275         if (k->idx != -1) {
1276                 if (k->defmgmt) {
1277                         if (k->idx < 4 || k->idx > 5) {
1278                                 GENL_SET_ERR_MSG(info,
1279                                                  "defmgmt key idx not 4 or 5");
1280                                 return -EINVAL;
1281                         }
1282                 } else if (k->defbeacon) {
1283                         if (k->idx < 6 || k->idx > 7) {
1284                                 GENL_SET_ERR_MSG(info,
1285                                                  "defbeacon key idx not 6 or 7");
1286                                 return -EINVAL;
1287                         }
1288                 } else if (k->def) {
1289                         if (k->idx < 0 || k->idx > 3) {
1290                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1291                                 return -EINVAL;
1292                         }
1293                 } else {
1294                         if (k->idx < 0 || k->idx > 7) {
1295                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1296                                 return -EINVAL;
1297                         }
1298                 }
1299         }
1300
1301         return 0;
1302 }
1303
1304 static struct cfg80211_cached_keys *
1305 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1306                        struct genl_info *info, bool *no_ht)
1307 {
1308         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1309         struct key_parse parse;
1310         struct nlattr *key;
1311         struct cfg80211_cached_keys *result;
1312         int rem, err, def = 0;
1313         bool have_key = false;
1314
1315         nla_for_each_nested(key, keys, rem) {
1316                 have_key = true;
1317                 break;
1318         }
1319
1320         if (!have_key)
1321                 return NULL;
1322
1323         result = kzalloc(sizeof(*result), GFP_KERNEL);
1324         if (!result)
1325                 return ERR_PTR(-ENOMEM);
1326
1327         result->def = -1;
1328
1329         nla_for_each_nested(key, keys, rem) {
1330                 memset(&parse, 0, sizeof(parse));
1331                 parse.idx = -1;
1332
1333                 err = nl80211_parse_key_new(info, key, &parse);
1334                 if (err)
1335                         goto error;
1336                 err = -EINVAL;
1337                 if (!parse.p.key)
1338                         goto error;
1339                 if (parse.idx < 0 || parse.idx > 3) {
1340                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1341                         goto error;
1342                 }
1343                 if (parse.def) {
1344                         if (def) {
1345                                 GENL_SET_ERR_MSG(info,
1346                                                  "only one key can be default");
1347                                 goto error;
1348                         }
1349                         def = 1;
1350                         result->def = parse.idx;
1351                         if (!parse.def_uni || !parse.def_multi)
1352                                 goto error;
1353                 } else if (parse.defmgmt)
1354                         goto error;
1355                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1356                                                      parse.idx, false, NULL);
1357                 if (err)
1358                         goto error;
1359                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1360                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1361                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1362                         err = -EINVAL;
1363                         goto error;
1364                 }
1365                 result->params[parse.idx].cipher = parse.p.cipher;
1366                 result->params[parse.idx].key_len = parse.p.key_len;
1367                 result->params[parse.idx].key = result->data[parse.idx];
1368                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1369
1370                 /* must be WEP key if we got here */
1371                 if (no_ht)
1372                         *no_ht = true;
1373         }
1374
1375         if (result->def < 0) {
1376                 err = -EINVAL;
1377                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1378                 goto error;
1379         }
1380
1381         return result;
1382  error:
1383         kfree(result);
1384         return ERR_PTR(err);
1385 }
1386
1387 static int nl80211_key_allowed(struct wireless_dev *wdev)
1388 {
1389         ASSERT_WDEV_LOCK(wdev);
1390
1391         switch (wdev->iftype) {
1392         case NL80211_IFTYPE_AP:
1393         case NL80211_IFTYPE_AP_VLAN:
1394         case NL80211_IFTYPE_P2P_GO:
1395         case NL80211_IFTYPE_MESH_POINT:
1396                 break;
1397         case NL80211_IFTYPE_ADHOC:
1398         case NL80211_IFTYPE_STATION:
1399         case NL80211_IFTYPE_P2P_CLIENT:
1400                 if (!wdev->current_bss)
1401                         return -ENOLINK;
1402                 break;
1403         case NL80211_IFTYPE_UNSPECIFIED:
1404         case NL80211_IFTYPE_OCB:
1405         case NL80211_IFTYPE_MONITOR:
1406         case NL80211_IFTYPE_NAN:
1407         case NL80211_IFTYPE_P2P_DEVICE:
1408         case NL80211_IFTYPE_WDS:
1409         case NUM_NL80211_IFTYPES:
1410                 return -EINVAL;
1411         }
1412
1413         return 0;
1414 }
1415
1416 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1417                                                         u32 freq)
1418 {
1419         struct ieee80211_channel *chan;
1420
1421         chan = ieee80211_get_channel_khz(wiphy, freq);
1422         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1423                 return NULL;
1424         return chan;
1425 }
1426
1427 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1428 {
1429         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1430         int i;
1431
1432         if (!nl_modes)
1433                 goto nla_put_failure;
1434
1435         i = 0;
1436         while (ifmodes) {
1437                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1438                         goto nla_put_failure;
1439                 ifmodes >>= 1;
1440                 i++;
1441         }
1442
1443         nla_nest_end(msg, nl_modes);
1444         return 0;
1445
1446 nla_put_failure:
1447         return -ENOBUFS;
1448 }
1449
1450 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1451                                           struct sk_buff *msg,
1452                                           bool large)
1453 {
1454         struct nlattr *nl_combis;
1455         int i, j;
1456
1457         nl_combis = nla_nest_start_noflag(msg,
1458                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1459         if (!nl_combis)
1460                 goto nla_put_failure;
1461
1462         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1463                 const struct ieee80211_iface_combination *c;
1464                 struct nlattr *nl_combi, *nl_limits;
1465
1466                 c = &wiphy->iface_combinations[i];
1467
1468                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1469                 if (!nl_combi)
1470                         goto nla_put_failure;
1471
1472                 nl_limits = nla_nest_start_noflag(msg,
1473                                                   NL80211_IFACE_COMB_LIMITS);
1474                 if (!nl_limits)
1475                         goto nla_put_failure;
1476
1477                 for (j = 0; j < c->n_limits; j++) {
1478                         struct nlattr *nl_limit;
1479
1480                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1481                         if (!nl_limit)
1482                                 goto nla_put_failure;
1483                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1484                                         c->limits[j].max))
1485                                 goto nla_put_failure;
1486                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1487                                                 c->limits[j].types))
1488                                 goto nla_put_failure;
1489                         nla_nest_end(msg, nl_limit);
1490                 }
1491
1492                 nla_nest_end(msg, nl_limits);
1493
1494                 if (c->beacon_int_infra_match &&
1495                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1496                         goto nla_put_failure;
1497                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1498                                 c->num_different_channels) ||
1499                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1500                                 c->max_interfaces))
1501                         goto nla_put_failure;
1502                 if (large &&
1503                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1504                                 c->radar_detect_widths) ||
1505                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1506                                 c->radar_detect_regions)))
1507                         goto nla_put_failure;
1508                 if (c->beacon_int_min_gcd &&
1509                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1510                                 c->beacon_int_min_gcd))
1511                         goto nla_put_failure;
1512
1513                 nla_nest_end(msg, nl_combi);
1514         }
1515
1516         nla_nest_end(msg, nl_combis);
1517
1518         return 0;
1519 nla_put_failure:
1520         return -ENOBUFS;
1521 }
1522
1523 #ifdef CONFIG_PM
1524 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1525                                         struct sk_buff *msg)
1526 {
1527         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1528         struct nlattr *nl_tcp;
1529
1530         if (!tcp)
1531                 return 0;
1532
1533         nl_tcp = nla_nest_start_noflag(msg,
1534                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1535         if (!nl_tcp)
1536                 return -ENOBUFS;
1537
1538         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1539                         tcp->data_payload_max))
1540                 return -ENOBUFS;
1541
1542         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1543                         tcp->data_payload_max))
1544                 return -ENOBUFS;
1545
1546         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1547                 return -ENOBUFS;
1548
1549         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1550                                 sizeof(*tcp->tok), tcp->tok))
1551                 return -ENOBUFS;
1552
1553         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1554                         tcp->data_interval_max))
1555                 return -ENOBUFS;
1556
1557         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1558                         tcp->wake_payload_max))
1559                 return -ENOBUFS;
1560
1561         nla_nest_end(msg, nl_tcp);
1562         return 0;
1563 }
1564
1565 static int nl80211_send_wowlan(struct sk_buff *msg,
1566                                struct cfg80211_registered_device *rdev,
1567                                bool large)
1568 {
1569         struct nlattr *nl_wowlan;
1570
1571         if (!rdev->wiphy.wowlan)
1572                 return 0;
1573
1574         nl_wowlan = nla_nest_start_noflag(msg,
1575                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1576         if (!nl_wowlan)
1577                 return -ENOBUFS;
1578
1579         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1580              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1581             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1582              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1583             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1584              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1585             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1586              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1587             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1588              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1589             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1590              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1591             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1592              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1593             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1594              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1595                 return -ENOBUFS;
1596
1597         if (rdev->wiphy.wowlan->n_patterns) {
1598                 struct nl80211_pattern_support pat = {
1599                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1600                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1601                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1602                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1603                 };
1604
1605                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1606                             sizeof(pat), &pat))
1607                         return -ENOBUFS;
1608         }
1609
1610         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1611             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1612                         rdev->wiphy.wowlan->max_nd_match_sets))
1613                 return -ENOBUFS;
1614
1615         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1616                 return -ENOBUFS;
1617
1618         nla_nest_end(msg, nl_wowlan);
1619
1620         return 0;
1621 }
1622 #endif
1623
1624 static int nl80211_send_coalesce(struct sk_buff *msg,
1625                                  struct cfg80211_registered_device *rdev)
1626 {
1627         struct nl80211_coalesce_rule_support rule;
1628
1629         if (!rdev->wiphy.coalesce)
1630                 return 0;
1631
1632         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1633         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1634         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1635         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1636         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1637         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1638
1639         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1640                 return -ENOBUFS;
1641
1642         return 0;
1643 }
1644
1645 static int
1646 nl80211_send_iftype_data(struct sk_buff *msg,
1647                          const struct ieee80211_supported_band *sband,
1648                          const struct ieee80211_sband_iftype_data *iftdata)
1649 {
1650         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1651
1652         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1653                                 iftdata->types_mask))
1654                 return -ENOBUFS;
1655
1656         if (he_cap->has_he) {
1657                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1658                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1659                             he_cap->he_cap_elem.mac_cap_info) ||
1660                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1661                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1662                             he_cap->he_cap_elem.phy_cap_info) ||
1663                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1664                             sizeof(he_cap->he_mcs_nss_supp),
1665                             &he_cap->he_mcs_nss_supp) ||
1666                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1667                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1668                         return -ENOBUFS;
1669         }
1670
1671         if (sband->band == NL80211_BAND_6GHZ &&
1672             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1673                     sizeof(iftdata->he_6ghz_capa),
1674                     &iftdata->he_6ghz_capa))
1675                 return -ENOBUFS;
1676
1677         return 0;
1678 }
1679
1680 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1681                                       struct ieee80211_supported_band *sband,
1682                                       bool large)
1683 {
1684         struct nlattr *nl_rates, *nl_rate;
1685         struct ieee80211_rate *rate;
1686         int i;
1687
1688         /* add HT info */
1689         if (sband->ht_cap.ht_supported &&
1690             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1691                      sizeof(sband->ht_cap.mcs),
1692                      &sband->ht_cap.mcs) ||
1693              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1694                          sband->ht_cap.cap) ||
1695              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1696                         sband->ht_cap.ampdu_factor) ||
1697              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1698                         sband->ht_cap.ampdu_density)))
1699                 return -ENOBUFS;
1700
1701         /* add VHT info */
1702         if (sband->vht_cap.vht_supported &&
1703             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1704                      sizeof(sband->vht_cap.vht_mcs),
1705                      &sband->vht_cap.vht_mcs) ||
1706              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1707                          sband->vht_cap.cap)))
1708                 return -ENOBUFS;
1709
1710         if (large && sband->n_iftype_data) {
1711                 struct nlattr *nl_iftype_data =
1712                         nla_nest_start_noflag(msg,
1713                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1714                 int err;
1715
1716                 if (!nl_iftype_data)
1717                         return -ENOBUFS;
1718
1719                 for (i = 0; i < sband->n_iftype_data; i++) {
1720                         struct nlattr *iftdata;
1721
1722                         iftdata = nla_nest_start_noflag(msg, i + 1);
1723                         if (!iftdata)
1724                                 return -ENOBUFS;
1725
1726                         err = nl80211_send_iftype_data(msg, sband,
1727                                                        &sband->iftype_data[i]);
1728                         if (err)
1729                                 return err;
1730
1731                         nla_nest_end(msg, iftdata);
1732                 }
1733
1734                 nla_nest_end(msg, nl_iftype_data);
1735         }
1736
1737         /* add EDMG info */
1738         if (large && sband->edmg_cap.channels &&
1739             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1740                        sband->edmg_cap.channels) ||
1741             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1742                        sband->edmg_cap.bw_config)))
1743
1744                 return -ENOBUFS;
1745
1746         /* add bitrates */
1747         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1748         if (!nl_rates)
1749                 return -ENOBUFS;
1750
1751         for (i = 0; i < sband->n_bitrates; i++) {
1752                 nl_rate = nla_nest_start_noflag(msg, i);
1753                 if (!nl_rate)
1754                         return -ENOBUFS;
1755
1756                 rate = &sband->bitrates[i];
1757                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1758                                 rate->bitrate))
1759                         return -ENOBUFS;
1760                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1761                     nla_put_flag(msg,
1762                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1763                         return -ENOBUFS;
1764
1765                 nla_nest_end(msg, nl_rate);
1766         }
1767
1768         nla_nest_end(msg, nl_rates);
1769
1770         return 0;
1771 }
1772
1773 static int
1774 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1775                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1776 {
1777         u16 stypes;
1778         struct nlattr *nl_ftypes, *nl_ifs;
1779         enum nl80211_iftype ift;
1780         int i;
1781
1782         if (!mgmt_stypes)
1783                 return 0;
1784
1785         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1786         if (!nl_ifs)
1787                 return -ENOBUFS;
1788
1789         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1790                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1791                 if (!nl_ftypes)
1792                         return -ENOBUFS;
1793                 i = 0;
1794                 stypes = mgmt_stypes[ift].tx;
1795                 while (stypes) {
1796                         if ((stypes & 1) &&
1797                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1798                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1799                                 return -ENOBUFS;
1800                         stypes >>= 1;
1801                         i++;
1802                 }
1803                 nla_nest_end(msg, nl_ftypes);
1804         }
1805
1806         nla_nest_end(msg, nl_ifs);
1807
1808         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1809         if (!nl_ifs)
1810                 return -ENOBUFS;
1811
1812         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1813                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1814                 if (!nl_ftypes)
1815                         return -ENOBUFS;
1816                 i = 0;
1817                 stypes = mgmt_stypes[ift].rx;
1818                 while (stypes) {
1819                         if ((stypes & 1) &&
1820                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1821                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1822                                 return -ENOBUFS;
1823                         stypes >>= 1;
1824                         i++;
1825                 }
1826                 nla_nest_end(msg, nl_ftypes);
1827         }
1828         nla_nest_end(msg, nl_ifs);
1829
1830         return 0;
1831 }
1832
1833 #define CMD(op, n)                                                      \
1834          do {                                                           \
1835                 if (rdev->ops->op) {                                    \
1836                         i++;                                            \
1837                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1838                                 goto nla_put_failure;                   \
1839                 }                                                       \
1840         } while (0)
1841
1842 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1843                                         struct sk_buff *msg)
1844 {
1845         int i = 0;
1846
1847         /*
1848          * do *NOT* add anything into this function, new things need to be
1849          * advertised only to new versions of userspace that can deal with
1850          * the split (and they can't possibly care about new features...
1851          */
1852         CMD(add_virtual_intf, NEW_INTERFACE);
1853         CMD(change_virtual_intf, SET_INTERFACE);
1854         CMD(add_key, NEW_KEY);
1855         CMD(start_ap, START_AP);
1856         CMD(add_station, NEW_STATION);
1857         CMD(add_mpath, NEW_MPATH);
1858         CMD(update_mesh_config, SET_MESH_CONFIG);
1859         CMD(change_bss, SET_BSS);
1860         CMD(auth, AUTHENTICATE);
1861         CMD(assoc, ASSOCIATE);
1862         CMD(deauth, DEAUTHENTICATE);
1863         CMD(disassoc, DISASSOCIATE);
1864         CMD(join_ibss, JOIN_IBSS);
1865         CMD(join_mesh, JOIN_MESH);
1866         CMD(set_pmksa, SET_PMKSA);
1867         CMD(del_pmksa, DEL_PMKSA);
1868         CMD(flush_pmksa, FLUSH_PMKSA);
1869         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1870                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1871         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1872         CMD(mgmt_tx, FRAME);
1873         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1874         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1875                 i++;
1876                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1877                         goto nla_put_failure;
1878         }
1879         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1880             rdev->ops->join_mesh) {
1881                 i++;
1882                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1883                         goto nla_put_failure;
1884         }
1885         CMD(set_wds_peer, SET_WDS_PEER);
1886         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1887                 CMD(tdls_mgmt, TDLS_MGMT);
1888                 CMD(tdls_oper, TDLS_OPER);
1889         }
1890         if (rdev->wiphy.max_sched_scan_reqs)
1891                 CMD(sched_scan_start, START_SCHED_SCAN);
1892         CMD(probe_client, PROBE_CLIENT);
1893         CMD(set_noack_map, SET_NOACK_MAP);
1894         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1895                 i++;
1896                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1897                         goto nla_put_failure;
1898         }
1899         CMD(start_p2p_device, START_P2P_DEVICE);
1900         CMD(set_mcast_rate, SET_MCAST_RATE);
1901 #ifdef CONFIG_NL80211_TESTMODE
1902         CMD(testmode_cmd, TESTMODE);
1903 #endif
1904
1905         if (rdev->ops->connect || rdev->ops->auth) {
1906                 i++;
1907                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1908                         goto nla_put_failure;
1909         }
1910
1911         if (rdev->ops->disconnect || rdev->ops->deauth) {
1912                 i++;
1913                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1914                         goto nla_put_failure;
1915         }
1916
1917         return i;
1918  nla_put_failure:
1919         return -ENOBUFS;
1920 }
1921
1922 static int
1923 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1924                            struct sk_buff *msg)
1925 {
1926         struct nlattr *ftm;
1927
1928         if (!cap->ftm.supported)
1929                 return 0;
1930
1931         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1932         if (!ftm)
1933                 return -ENOBUFS;
1934
1935         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1936                 return -ENOBUFS;
1937         if (cap->ftm.non_asap &&
1938             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1939                 return -ENOBUFS;
1940         if (cap->ftm.request_lci &&
1941             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1942                 return -ENOBUFS;
1943         if (cap->ftm.request_civicloc &&
1944             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1945                 return -ENOBUFS;
1946         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1947                         cap->ftm.preambles))
1948                 return -ENOBUFS;
1949         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1950                         cap->ftm.bandwidths))
1951                 return -ENOBUFS;
1952         if (cap->ftm.max_bursts_exponent >= 0 &&
1953             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1954                         cap->ftm.max_bursts_exponent))
1955                 return -ENOBUFS;
1956         if (cap->ftm.max_ftms_per_burst &&
1957             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1958                         cap->ftm.max_ftms_per_burst))
1959                 return -ENOBUFS;
1960         if (cap->ftm.trigger_based &&
1961             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1962                 return -ENOBUFS;
1963         if (cap->ftm.non_trigger_based &&
1964             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1965                 return -ENOBUFS;
1966
1967         nla_nest_end(msg, ftm);
1968         return 0;
1969 }
1970
1971 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1972                                   struct sk_buff *msg)
1973 {
1974         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1975         struct nlattr *pmsr, *caps;
1976
1977         if (!cap)
1978                 return 0;
1979
1980         /*
1981          * we don't need to clean up anything here since the caller
1982          * will genlmsg_cancel() if we fail
1983          */
1984
1985         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1986         if (!pmsr)
1987                 return -ENOBUFS;
1988
1989         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1990                 return -ENOBUFS;
1991
1992         if (cap->report_ap_tsf &&
1993             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1994                 return -ENOBUFS;
1995
1996         if (cap->randomize_mac_addr &&
1997             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1998                 return -ENOBUFS;
1999
2000         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2001         if (!caps)
2002                 return -ENOBUFS;
2003
2004         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2005                 return -ENOBUFS;
2006
2007         nla_nest_end(msg, caps);
2008         nla_nest_end(msg, pmsr);
2009
2010         return 0;
2011 }
2012
2013 static int
2014 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2015                               struct sk_buff *msg)
2016 {
2017         int i;
2018         struct nlattr *nested, *nested_akms;
2019         const struct wiphy_iftype_akm_suites *iftype_akms;
2020
2021         if (!rdev->wiphy.num_iftype_akm_suites ||
2022             !rdev->wiphy.iftype_akm_suites)
2023                 return 0;
2024
2025         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2026         if (!nested)
2027                 return -ENOBUFS;
2028
2029         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2030                 nested_akms = nla_nest_start(msg, i + 1);
2031                 if (!nested_akms)
2032                         return -ENOBUFS;
2033
2034                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2035
2036                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2037                                         iftype_akms->iftypes_mask))
2038                         return -ENOBUFS;
2039
2040                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2041                             sizeof(u32) * iftype_akms->n_akm_suites,
2042                             iftype_akms->akm_suites)) {
2043                         return -ENOBUFS;
2044                 }
2045                 nla_nest_end(msg, nested_akms);
2046         }
2047
2048         nla_nest_end(msg, nested);
2049
2050         return 0;
2051 }
2052
2053 static int
2054 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2055                                struct sk_buff *msg)
2056 {
2057         struct nlattr *supp;
2058
2059         if (!rdev->wiphy.tid_config_support.vif &&
2060             !rdev->wiphy.tid_config_support.peer)
2061                 return 0;
2062
2063         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2064         if (!supp)
2065                 return -ENOSPC;
2066
2067         if (rdev->wiphy.tid_config_support.vif &&
2068             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2069                               rdev->wiphy.tid_config_support.vif,
2070                               NL80211_TID_CONFIG_ATTR_PAD))
2071                 goto fail;
2072
2073         if (rdev->wiphy.tid_config_support.peer &&
2074             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2075                               rdev->wiphy.tid_config_support.peer,
2076                               NL80211_TID_CONFIG_ATTR_PAD))
2077                 goto fail;
2078
2079         /* for now we just use the same value ... makes more sense */
2080         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2081                        rdev->wiphy.tid_config_support.max_retry))
2082                 goto fail;
2083         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2084                        rdev->wiphy.tid_config_support.max_retry))
2085                 goto fail;
2086
2087         nla_nest_end(msg, supp);
2088
2089         return 0;
2090 fail:
2091         nla_nest_cancel(msg, supp);
2092         return -ENOBUFS;
2093 }
2094
2095 struct nl80211_dump_wiphy_state {
2096         s64 filter_wiphy;
2097         long start;
2098         long split_start, band_start, chan_start, capa_start;
2099         bool split;
2100 };
2101
2102 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2103                               enum nl80211_commands cmd,
2104                               struct sk_buff *msg, u32 portid, u32 seq,
2105                               int flags, struct nl80211_dump_wiphy_state *state)
2106 {
2107         void *hdr;
2108         struct nlattr *nl_bands, *nl_band;
2109         struct nlattr *nl_freqs, *nl_freq;
2110         struct nlattr *nl_cmds;
2111         enum nl80211_band band;
2112         struct ieee80211_channel *chan;
2113         int i;
2114         const struct ieee80211_txrx_stypes *mgmt_stypes =
2115                                 rdev->wiphy.mgmt_stypes;
2116         u32 features;
2117
2118         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2119         if (!hdr)
2120                 return -ENOBUFS;
2121
2122         if (WARN_ON(!state))
2123                 return -EINVAL;
2124
2125         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2126             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2127                            wiphy_name(&rdev->wiphy)) ||
2128             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2129                         cfg80211_rdev_list_generation))
2130                 goto nla_put_failure;
2131
2132         if (cmd != NL80211_CMD_NEW_WIPHY)
2133                 goto finish;
2134
2135         switch (state->split_start) {
2136         case 0:
2137                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2138                                rdev->wiphy.retry_short) ||
2139                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2140                                rdev->wiphy.retry_long) ||
2141                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2142                                 rdev->wiphy.frag_threshold) ||
2143                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2144                                 rdev->wiphy.rts_threshold) ||
2145                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2146                                rdev->wiphy.coverage_class) ||
2147                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2148                                rdev->wiphy.max_scan_ssids) ||
2149                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2150                                rdev->wiphy.max_sched_scan_ssids) ||
2151                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2152                                 rdev->wiphy.max_scan_ie_len) ||
2153                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2154                                 rdev->wiphy.max_sched_scan_ie_len) ||
2155                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2156                                rdev->wiphy.max_match_sets))
2157                         goto nla_put_failure;
2158
2159                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2160                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2161                         goto nla_put_failure;
2162                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2163                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2164                         goto nla_put_failure;
2165                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2166                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2167                         goto nla_put_failure;
2168                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2169                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2170                         goto nla_put_failure;
2171                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2172                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2173                         goto nla_put_failure;
2174                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2175                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2176                         goto nla_put_failure;
2177                 state->split_start++;
2178                 if (state->split)
2179                         break;
2180                 fallthrough;
2181         case 1:
2182                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2183                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2184                             rdev->wiphy.cipher_suites))
2185                         goto nla_put_failure;
2186
2187                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2188                                rdev->wiphy.max_num_pmkids))
2189                         goto nla_put_failure;
2190
2191                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2192                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2193                         goto nla_put_failure;
2194
2195                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2196                                 rdev->wiphy.available_antennas_tx) ||
2197                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2198                                 rdev->wiphy.available_antennas_rx))
2199                         goto nla_put_failure;
2200
2201                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2202                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2203                                 rdev->wiphy.probe_resp_offload))
2204                         goto nla_put_failure;
2205
2206                 if ((rdev->wiphy.available_antennas_tx ||
2207                      rdev->wiphy.available_antennas_rx) &&
2208                     rdev->ops->get_antenna) {
2209                         u32 tx_ant = 0, rx_ant = 0;
2210                         int res;
2211
2212                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2213                         if (!res) {
2214                                 if (nla_put_u32(msg,
2215                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2216                                                 tx_ant) ||
2217                                     nla_put_u32(msg,
2218                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2219                                                 rx_ant))
2220                                         goto nla_put_failure;
2221                         }
2222                 }
2223
2224                 state->split_start++;
2225                 if (state->split)
2226                         break;
2227                 fallthrough;
2228         case 2:
2229                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2230                                         rdev->wiphy.interface_modes))
2231                                 goto nla_put_failure;
2232                 state->split_start++;
2233                 if (state->split)
2234                         break;
2235                 fallthrough;
2236         case 3:
2237                 nl_bands = nla_nest_start_noflag(msg,
2238                                                  NL80211_ATTR_WIPHY_BANDS);
2239                 if (!nl_bands)
2240                         goto nla_put_failure;
2241
2242                 for (band = state->band_start;
2243                      band < NUM_NL80211_BANDS; band++) {
2244                         struct ieee80211_supported_band *sband;
2245
2246                         /* omit higher bands for ancient software */
2247                         if (band > NL80211_BAND_5GHZ && !state->split)
2248                                 break;
2249
2250                         sband = rdev->wiphy.bands[band];
2251
2252                         if (!sband)
2253                                 continue;
2254
2255                         nl_band = nla_nest_start_noflag(msg, band);
2256                         if (!nl_band)
2257                                 goto nla_put_failure;
2258
2259                         switch (state->chan_start) {
2260                         case 0:
2261                                 if (nl80211_send_band_rateinfo(msg, sband,
2262                                                                state->split))
2263                                         goto nla_put_failure;
2264                                 state->chan_start++;
2265                                 if (state->split)
2266                                         break;
2267                                 fallthrough;
2268                         default:
2269                                 /* add frequencies */
2270                                 nl_freqs = nla_nest_start_noflag(msg,
2271                                                                  NL80211_BAND_ATTR_FREQS);
2272                                 if (!nl_freqs)
2273                                         goto nla_put_failure;
2274
2275                                 for (i = state->chan_start - 1;
2276                                      i < sband->n_channels;
2277                                      i++) {
2278                                         nl_freq = nla_nest_start_noflag(msg,
2279                                                                         i);
2280                                         if (!nl_freq)
2281                                                 goto nla_put_failure;
2282
2283                                         chan = &sband->channels[i];
2284
2285                                         if (nl80211_msg_put_channel(
2286                                                         msg, &rdev->wiphy, chan,
2287                                                         state->split))
2288                                                 goto nla_put_failure;
2289
2290                                         nla_nest_end(msg, nl_freq);
2291                                         if (state->split)
2292                                                 break;
2293                                 }
2294                                 if (i < sband->n_channels)
2295                                         state->chan_start = i + 2;
2296                                 else
2297                                         state->chan_start = 0;
2298                                 nla_nest_end(msg, nl_freqs);
2299                         }
2300
2301                         nla_nest_end(msg, nl_band);
2302
2303                         if (state->split) {
2304                                 /* start again here */
2305                                 if (state->chan_start)
2306                                         band--;
2307                                 break;
2308                         }
2309                 }
2310                 nla_nest_end(msg, nl_bands);
2311
2312                 if (band < NUM_NL80211_BANDS)
2313                         state->band_start = band + 1;
2314                 else
2315                         state->band_start = 0;
2316
2317                 /* if bands & channels are done, continue outside */
2318                 if (state->band_start == 0 && state->chan_start == 0)
2319                         state->split_start++;
2320                 if (state->split)
2321                         break;
2322                 fallthrough;
2323         case 4:
2324                 nl_cmds = nla_nest_start_noflag(msg,
2325                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2326                 if (!nl_cmds)
2327                         goto nla_put_failure;
2328
2329                 i = nl80211_add_commands_unsplit(rdev, msg);
2330                 if (i < 0)
2331                         goto nla_put_failure;
2332                 if (state->split) {
2333                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2334                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2335                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2336                                 CMD(channel_switch, CHANNEL_SWITCH);
2337                         CMD(set_qos_map, SET_QOS_MAP);
2338                         if (rdev->wiphy.features &
2339                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2340                                 CMD(add_tx_ts, ADD_TX_TS);
2341                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2342                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2343                         CMD(update_ft_ies, UPDATE_FT_IES);
2344                 }
2345 #undef CMD
2346
2347                 nla_nest_end(msg, nl_cmds);
2348                 state->split_start++;
2349                 if (state->split)
2350                         break;
2351                 fallthrough;
2352         case 5:
2353                 if (rdev->ops->remain_on_channel &&
2354                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2355                     nla_put_u32(msg,
2356                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2357                                 rdev->wiphy.max_remain_on_channel_duration))
2358                         goto nla_put_failure;
2359
2360                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2361                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2362                         goto nla_put_failure;
2363
2364                 state->split_start++;
2365                 if (state->split)
2366                         break;
2367                 fallthrough;
2368         case 6:
2369 #ifdef CONFIG_PM
2370                 if (nl80211_send_wowlan(msg, rdev, state->split))
2371                         goto nla_put_failure;
2372                 state->split_start++;
2373                 if (state->split)
2374                         break;
2375 #else
2376                 state->split_start++;
2377 #endif
2378                 fallthrough;
2379         case 7:
2380                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2381                                         rdev->wiphy.software_iftypes))
2382                         goto nla_put_failure;
2383
2384                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2385                                                    state->split))
2386                         goto nla_put_failure;
2387
2388                 state->split_start++;
2389                 if (state->split)
2390                         break;
2391                 fallthrough;
2392         case 8:
2393                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2394                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2395                                 rdev->wiphy.ap_sme_capa))
2396                         goto nla_put_failure;
2397
2398                 features = rdev->wiphy.features;
2399                 /*
2400                  * We can only add the per-channel limit information if the
2401                  * dump is split, otherwise it makes it too big. Therefore
2402                  * only advertise it in that case.
2403                  */
2404                 if (state->split)
2405                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2406                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2407                         goto nla_put_failure;
2408
2409                 if (rdev->wiphy.ht_capa_mod_mask &&
2410                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2411                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2412                             rdev->wiphy.ht_capa_mod_mask))
2413                         goto nla_put_failure;
2414
2415                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2416                     rdev->wiphy.max_acl_mac_addrs &&
2417                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2418                                 rdev->wiphy.max_acl_mac_addrs))
2419                         goto nla_put_failure;
2420
2421                 /*
2422                  * Any information below this point is only available to
2423                  * applications that can deal with it being split. This
2424                  * helps ensure that newly added capabilities don't break
2425                  * older tools by overrunning their buffers.
2426                  *
2427                  * We still increment split_start so that in the split
2428                  * case we'll continue with more data in the next round,
2429                  * but break unconditionally so unsplit data stops here.
2430                  */
2431                 if (state->split)
2432                         state->split_start++;
2433                 else
2434                         state->split_start = 0;
2435                 break;
2436         case 9:
2437                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2438                         goto nla_put_failure;
2439
2440                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2441                                 rdev->wiphy.max_sched_scan_plans) ||
2442                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2443                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2444                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2445                                 rdev->wiphy.max_sched_scan_plan_iterations))
2446                         goto nla_put_failure;
2447
2448                 if (rdev->wiphy.extended_capabilities &&
2449                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2450                              rdev->wiphy.extended_capabilities_len,
2451                              rdev->wiphy.extended_capabilities) ||
2452                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2453                              rdev->wiphy.extended_capabilities_len,
2454                              rdev->wiphy.extended_capabilities_mask)))
2455                         goto nla_put_failure;
2456
2457                 if (rdev->wiphy.vht_capa_mod_mask &&
2458                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2459                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2460                             rdev->wiphy.vht_capa_mod_mask))
2461                         goto nla_put_failure;
2462
2463                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2464                             rdev->wiphy.perm_addr))
2465                         goto nla_put_failure;
2466
2467                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2468                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2469                             rdev->wiphy.addr_mask))
2470                         goto nla_put_failure;
2471
2472                 if (rdev->wiphy.n_addresses > 1) {
2473                         void *attr;
2474
2475                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2476                         if (!attr)
2477                                 goto nla_put_failure;
2478
2479                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2480                                 if (nla_put(msg, i + 1, ETH_ALEN,
2481                                             rdev->wiphy.addresses[i].addr))
2482                                         goto nla_put_failure;
2483
2484                         nla_nest_end(msg, attr);
2485                 }
2486
2487                 state->split_start++;
2488                 break;
2489         case 10:
2490                 if (nl80211_send_coalesce(msg, rdev))
2491                         goto nla_put_failure;
2492
2493                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2494                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2495                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2496                         goto nla_put_failure;
2497
2498                 if (rdev->wiphy.max_ap_assoc_sta &&
2499                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2500                                 rdev->wiphy.max_ap_assoc_sta))
2501                         goto nla_put_failure;
2502
2503                 state->split_start++;
2504                 break;
2505         case 11:
2506                 if (rdev->wiphy.n_vendor_commands) {
2507                         const struct nl80211_vendor_cmd_info *info;
2508                         struct nlattr *nested;
2509
2510                         nested = nla_nest_start_noflag(msg,
2511                                                        NL80211_ATTR_VENDOR_DATA);
2512                         if (!nested)
2513                                 goto nla_put_failure;
2514
2515                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2516                                 info = &rdev->wiphy.vendor_commands[i].info;
2517                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2518                                         goto nla_put_failure;
2519                         }
2520                         nla_nest_end(msg, nested);
2521                 }
2522
2523                 if (rdev->wiphy.n_vendor_events) {
2524                         const struct nl80211_vendor_cmd_info *info;
2525                         struct nlattr *nested;
2526
2527                         nested = nla_nest_start_noflag(msg,
2528                                                        NL80211_ATTR_VENDOR_EVENTS);
2529                         if (!nested)
2530                                 goto nla_put_failure;
2531
2532                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2533                                 info = &rdev->wiphy.vendor_events[i];
2534                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2535                                         goto nla_put_failure;
2536                         }
2537                         nla_nest_end(msg, nested);
2538                 }
2539                 state->split_start++;
2540                 break;
2541         case 12:
2542                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2543                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2544                                rdev->wiphy.max_num_csa_counters))
2545                         goto nla_put_failure;
2546
2547                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2548                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2549                         goto nla_put_failure;
2550
2551                 if (rdev->wiphy.max_sched_scan_reqs &&
2552                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2553                                 rdev->wiphy.max_sched_scan_reqs))
2554                         goto nla_put_failure;
2555
2556                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2557                             sizeof(rdev->wiphy.ext_features),
2558                             rdev->wiphy.ext_features))
2559                         goto nla_put_failure;
2560
2561                 if (rdev->wiphy.bss_select_support) {
2562                         struct nlattr *nested;
2563                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2564
2565                         nested = nla_nest_start_noflag(msg,
2566                                                        NL80211_ATTR_BSS_SELECT);
2567                         if (!nested)
2568                                 goto nla_put_failure;
2569
2570                         i = 0;
2571                         while (bss_select_support) {
2572                                 if ((bss_select_support & 1) &&
2573                                     nla_put_flag(msg, i))
2574                                         goto nla_put_failure;
2575                                 i++;
2576                                 bss_select_support >>= 1;
2577                         }
2578                         nla_nest_end(msg, nested);
2579                 }
2580
2581                 state->split_start++;
2582                 break;
2583         case 13:
2584                 if (rdev->wiphy.num_iftype_ext_capab &&
2585                     rdev->wiphy.iftype_ext_capab) {
2586                         struct nlattr *nested_ext_capab, *nested;
2587
2588                         nested = nla_nest_start_noflag(msg,
2589                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2590                         if (!nested)
2591                                 goto nla_put_failure;
2592
2593                         for (i = state->capa_start;
2594                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2595                                 const struct wiphy_iftype_ext_capab *capab;
2596
2597                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2598
2599                                 nested_ext_capab = nla_nest_start_noflag(msg,
2600                                                                          i);
2601                                 if (!nested_ext_capab ||
2602                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2603                                                 capab->iftype) ||
2604                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2605                                             capab->extended_capabilities_len,
2606                                             capab->extended_capabilities) ||
2607                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2608                                             capab->extended_capabilities_len,
2609                                             capab->extended_capabilities_mask))
2610                                         goto nla_put_failure;
2611
2612                                 nla_nest_end(msg, nested_ext_capab);
2613                                 if (state->split)
2614                                         break;
2615                         }
2616                         nla_nest_end(msg, nested);
2617                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2618                                 state->capa_start = i + 1;
2619                                 break;
2620                         }
2621                 }
2622
2623                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2624                                 rdev->wiphy.nan_supported_bands))
2625                         goto nla_put_failure;
2626
2627                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2628                                             NL80211_EXT_FEATURE_TXQS)) {
2629                         struct cfg80211_txq_stats txqstats = {};
2630                         int res;
2631
2632                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2633                         if (!res &&
2634                             !nl80211_put_txq_stats(msg, &txqstats,
2635                                                    NL80211_ATTR_TXQ_STATS))
2636                                 goto nla_put_failure;
2637
2638                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2639                                         rdev->wiphy.txq_limit))
2640                                 goto nla_put_failure;
2641                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2642                                         rdev->wiphy.txq_memory_limit))
2643                                 goto nla_put_failure;
2644                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2645                                         rdev->wiphy.txq_quantum))
2646                                 goto nla_put_failure;
2647                 }
2648
2649                 state->split_start++;
2650                 break;
2651         case 14:
2652                 if (nl80211_send_pmsr_capa(rdev, msg))
2653                         goto nla_put_failure;
2654
2655                 state->split_start++;
2656                 break;
2657         case 15:
2658                 if (rdev->wiphy.akm_suites &&
2659                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2660                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2661                             rdev->wiphy.akm_suites))
2662                         goto nla_put_failure;
2663
2664                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2665                         goto nla_put_failure;
2666
2667                 if (nl80211_put_tid_config_support(rdev, msg))
2668                         goto nla_put_failure;
2669
2670                 /* done */
2671                 state->split_start = 0;
2672                 break;
2673         }
2674  finish:
2675         genlmsg_end(msg, hdr);
2676         return 0;
2677
2678  nla_put_failure:
2679         genlmsg_cancel(msg, hdr);
2680         return -EMSGSIZE;
2681 }
2682
2683 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2684                                     struct netlink_callback *cb,
2685                                     struct nl80211_dump_wiphy_state *state)
2686 {
2687         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2688         int ret;
2689
2690         if (!tb)
2691                 return -ENOMEM;
2692
2693         ret = nlmsg_parse_deprecated(cb->nlh,
2694                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2695                                      tb, nl80211_fam.maxattr,
2696                                      nl80211_policy, NULL);
2697         /* ignore parse errors for backward compatibility */
2698         if (ret) {
2699                 ret = 0;
2700                 goto out;
2701         }
2702
2703         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2704         if (tb[NL80211_ATTR_WIPHY])
2705                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2706         if (tb[NL80211_ATTR_WDEV])
2707                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2708         if (tb[NL80211_ATTR_IFINDEX]) {
2709                 struct net_device *netdev;
2710                 struct cfg80211_registered_device *rdev;
2711                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2712
2713                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2714                 if (!netdev) {
2715                         ret = -ENODEV;
2716                         goto out;
2717                 }
2718                 if (netdev->ieee80211_ptr) {
2719                         rdev = wiphy_to_rdev(
2720                                 netdev->ieee80211_ptr->wiphy);
2721                         state->filter_wiphy = rdev->wiphy_idx;
2722                 }
2723         }
2724
2725         ret = 0;
2726 out:
2727         kfree(tb);
2728         return ret;
2729 }
2730
2731 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2732 {
2733         int idx = 0, ret;
2734         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2735         struct cfg80211_registered_device *rdev;
2736
2737         rtnl_lock();
2738         if (!state) {
2739                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2740                 if (!state) {
2741                         rtnl_unlock();
2742                         return -ENOMEM;
2743                 }
2744                 state->filter_wiphy = -1;
2745                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2746                 if (ret) {
2747                         kfree(state);
2748                         rtnl_unlock();
2749                         return ret;
2750                 }
2751                 cb->args[0] = (long)state;
2752         }
2753
2754         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2755                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2756                         continue;
2757                 if (++idx <= state->start)
2758                         continue;
2759                 if (state->filter_wiphy != -1 &&
2760                     state->filter_wiphy != rdev->wiphy_idx)
2761                         continue;
2762                 /* attempt to fit multiple wiphy data chunks into the skb */
2763                 do {
2764                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2765                                                  skb,
2766                                                  NETLINK_CB(cb->skb).portid,
2767                                                  cb->nlh->nlmsg_seq,
2768                                                  NLM_F_MULTI, state);
2769                         if (ret < 0) {
2770                                 /*
2771                                  * If sending the wiphy data didn't fit (ENOBUFS
2772                                  * or EMSGSIZE returned), this SKB is still
2773                                  * empty (so it's not too big because another
2774                                  * wiphy dataset is already in the skb) and
2775                                  * we've not tried to adjust the dump allocation
2776                                  * yet ... then adjust the alloc size to be
2777                                  * bigger, and return 1 but with the empty skb.
2778                                  * This results in an empty message being RX'ed
2779                                  * in userspace, but that is ignored.
2780                                  *
2781                                  * We can then retry with the larger buffer.
2782                                  */
2783                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2784                                     !skb->len && !state->split &&
2785                                     cb->min_dump_alloc < 4096) {
2786                                         cb->min_dump_alloc = 4096;
2787                                         state->split_start = 0;
2788                                         rtnl_unlock();
2789                                         return 1;
2790                                 }
2791                                 idx--;
2792                                 break;
2793                         }
2794                 } while (state->split_start > 0);
2795                 break;
2796         }
2797         rtnl_unlock();
2798
2799         state->start = idx;
2800
2801         return skb->len;
2802 }
2803
2804 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2805 {
2806         kfree((void *)cb->args[0]);
2807         return 0;
2808 }
2809
2810 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2811 {
2812         struct sk_buff *msg;
2813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2814         struct nl80211_dump_wiphy_state state = {};
2815
2816         msg = nlmsg_new(4096, GFP_KERNEL);
2817         if (!msg)
2818                 return -ENOMEM;
2819
2820         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2821                                info->snd_portid, info->snd_seq, 0,
2822                                &state) < 0) {
2823                 nlmsg_free(msg);
2824                 return -ENOBUFS;
2825         }
2826
2827         return genlmsg_reply(msg, info);
2828 }
2829
2830 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2831         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2832         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2833         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2834         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2835         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2836 };
2837
2838 static int parse_txq_params(struct nlattr *tb[],
2839                             struct ieee80211_txq_params *txq_params)
2840 {
2841         u8 ac;
2842
2843         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2844             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2845             !tb[NL80211_TXQ_ATTR_AIFS])
2846                 return -EINVAL;
2847
2848         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2849         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2850         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2851         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2852         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2853
2854         if (ac >= NL80211_NUM_ACS)
2855                 return -EINVAL;
2856         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2857         return 0;
2858 }
2859
2860 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2861 {
2862         /*
2863          * You can only set the channel explicitly for WDS interfaces,
2864          * all others have their channel managed via their respective
2865          * "establish a connection" command (connect, join, ...)
2866          *
2867          * For AP/GO and mesh mode, the channel can be set with the
2868          * channel userspace API, but is only stored and passed to the
2869          * low-level driver when the AP starts or the mesh is joined.
2870          * This is for backward compatibility, userspace can also give
2871          * the channel in the start-ap or join-mesh commands instead.
2872          *
2873          * Monitors are special as they are normally slaved to
2874          * whatever else is going on, so they have their own special
2875          * operation to set the monitor channel if possible.
2876          */
2877         return !wdev ||
2878                 wdev->iftype == NL80211_IFTYPE_AP ||
2879                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2880                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2881                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2882 }
2883
2884 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2885                           struct genl_info *info,
2886                           struct cfg80211_chan_def *chandef)
2887 {
2888         struct netlink_ext_ack *extack = info->extack;
2889         struct nlattr **attrs = info->attrs;
2890         u32 control_freq;
2891
2892         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2893                 return -EINVAL;
2894
2895         control_freq = MHZ_TO_KHZ(
2896                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2897         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2898                 control_freq +=
2899                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2900
2901         memset(chandef, 0, sizeof(*chandef));
2902         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2903         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2904         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2905         chandef->freq1_offset = control_freq % 1000;
2906         chandef->center_freq2 = 0;
2907
2908         /* Primary channel not allowed */
2909         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2910                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2911                                     "Channel is disabled");
2912                 return -EINVAL;
2913         }
2914
2915         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2916                 enum nl80211_channel_type chantype;
2917
2918                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2919
2920                 switch (chantype) {
2921                 case NL80211_CHAN_NO_HT:
2922                 case NL80211_CHAN_HT20:
2923                 case NL80211_CHAN_HT40PLUS:
2924                 case NL80211_CHAN_HT40MINUS:
2925                         cfg80211_chandef_create(chandef, chandef->chan,
2926                                                 chantype);
2927                         /* user input for center_freq is incorrect */
2928                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2929                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2930                                 NL_SET_ERR_MSG_ATTR(extack,
2931                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2932                                                     "bad center frequency 1");
2933                                 return -EINVAL;
2934                         }
2935                         /* center_freq2 must be zero */
2936                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2937                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2938                                 NL_SET_ERR_MSG_ATTR(extack,
2939                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2940                                                     "center frequency 2 can't be used");
2941                                 return -EINVAL;
2942                         }
2943                         break;
2944                 default:
2945                         NL_SET_ERR_MSG_ATTR(extack,
2946                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2947                                             "invalid channel type");
2948                         return -EINVAL;
2949                 }
2950         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2951                 chandef->width =
2952                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2953                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2954                         chandef->center_freq1 =
2955                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2956                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2957                                 chandef->freq1_offset = nla_get_u32(
2958                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2959                         else
2960                                 chandef->freq1_offset = 0;
2961                 }
2962                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2963                         chandef->center_freq2 =
2964                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2965         }
2966
2967         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2968                 chandef->edmg.channels =
2969                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2970
2971                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2972                         chandef->edmg.bw_config =
2973                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2974         } else {
2975                 chandef->edmg.bw_config = 0;
2976                 chandef->edmg.channels = 0;
2977         }
2978
2979         if (!cfg80211_chandef_valid(chandef)) {
2980                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2981                 return -EINVAL;
2982         }
2983
2984         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2985                                      IEEE80211_CHAN_DISABLED)) {
2986                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2987                 return -EINVAL;
2988         }
2989
2990         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2991              chandef->width == NL80211_CHAN_WIDTH_10) &&
2992             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2993                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2994                 return -EINVAL;
2995         }
2996
2997         return 0;
2998 }
2999
3000 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3001                                  struct net_device *dev,
3002                                  struct genl_info *info)
3003 {
3004         struct cfg80211_chan_def chandef;
3005         int result;
3006         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3007         struct wireless_dev *wdev = NULL;
3008
3009         if (dev)
3010                 wdev = dev->ieee80211_ptr;
3011         if (!nl80211_can_set_dev_channel(wdev))
3012                 return -EOPNOTSUPP;
3013         if (wdev)
3014                 iftype = wdev->iftype;
3015
3016         result = nl80211_parse_chandef(rdev, info, &chandef);
3017         if (result)
3018                 return result;
3019
3020         switch (iftype) {
3021         case NL80211_IFTYPE_AP:
3022         case NL80211_IFTYPE_P2P_GO:
3023                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3024                                                    iftype)) {
3025                         result = -EINVAL;
3026                         break;
3027                 }
3028                 if (wdev->beacon_interval) {
3029                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3030                             !(rdev->wiphy.features &
3031                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3032                                 result = -EBUSY;
3033                                 break;
3034                         }
3035
3036                         /* Only allow dynamic channel width changes */
3037                         if (chandef.chan != wdev->preset_chandef.chan) {
3038                                 result = -EBUSY;
3039                                 break;
3040                         }
3041                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3042                         if (result)
3043                                 break;
3044                 }
3045                 wdev->preset_chandef = chandef;
3046                 result = 0;
3047                 break;
3048         case NL80211_IFTYPE_MESH_POINT:
3049                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3050                 break;
3051         case NL80211_IFTYPE_MONITOR:
3052                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3053                 break;
3054         default:
3055                 result = -EINVAL;
3056         }
3057
3058         return result;
3059 }
3060
3061 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3062 {
3063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3064         struct net_device *netdev = info->user_ptr[1];
3065
3066         return __nl80211_set_channel(rdev, netdev, info);
3067 }
3068
3069 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
3070 {
3071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3072         struct net_device *dev = info->user_ptr[1];
3073         struct wireless_dev *wdev = dev->ieee80211_ptr;
3074         const u8 *bssid;
3075
3076         if (!info->attrs[NL80211_ATTR_MAC])
3077                 return -EINVAL;
3078
3079         if (netif_running(dev))
3080                 return -EBUSY;
3081
3082         if (!rdev->ops->set_wds_peer)
3083                 return -EOPNOTSUPP;
3084
3085         if (wdev->iftype != NL80211_IFTYPE_WDS)
3086                 return -EOPNOTSUPP;
3087
3088         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3089         return rdev_set_wds_peer(rdev, dev, bssid);
3090 }
3091
3092 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3093 {
3094         struct cfg80211_registered_device *rdev;
3095         struct net_device *netdev = NULL;
3096         struct wireless_dev *wdev;
3097         int result = 0, rem_txq_params = 0;
3098         struct nlattr *nl_txq_params;
3099         u32 changed;
3100         u8 retry_short = 0, retry_long = 0;
3101         u32 frag_threshold = 0, rts_threshold = 0;
3102         u8 coverage_class = 0;
3103         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3104
3105         ASSERT_RTNL();
3106
3107         /*
3108          * Try to find the wiphy and netdev. Normally this
3109          * function shouldn't need the netdev, but this is
3110          * done for backward compatibility -- previously
3111          * setting the channel was done per wiphy, but now
3112          * it is per netdev. Previous userland like hostapd
3113          * also passed a netdev to set_wiphy, so that it is
3114          * possible to let that go to the right netdev!
3115          */
3116
3117         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3118                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3119
3120                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3121                 if (netdev && netdev->ieee80211_ptr)
3122                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3123                 else
3124                         netdev = NULL;
3125         }
3126
3127         if (!netdev) {
3128                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3129                                                   info->attrs);
3130                 if (IS_ERR(rdev))
3131                         return PTR_ERR(rdev);
3132                 wdev = NULL;
3133                 netdev = NULL;
3134                 result = 0;
3135         } else
3136                 wdev = netdev->ieee80211_ptr;
3137
3138         /*
3139          * end workaround code, by now the rdev is available
3140          * and locked, and wdev may or may not be NULL.
3141          */
3142
3143         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3144                 result = cfg80211_dev_rename(
3145                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3146
3147         if (result)
3148                 return result;
3149
3150         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3151                 struct ieee80211_txq_params txq_params;
3152                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3153
3154                 if (!rdev->ops->set_txq_params)
3155                         return -EOPNOTSUPP;
3156
3157                 if (!netdev)
3158                         return -EINVAL;
3159
3160                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3161                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3162                         return -EINVAL;
3163
3164                 if (!netif_running(netdev))
3165                         return -ENETDOWN;
3166
3167                 nla_for_each_nested(nl_txq_params,
3168                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3169                                     rem_txq_params) {
3170                         result = nla_parse_nested_deprecated(tb,
3171                                                              NL80211_TXQ_ATTR_MAX,
3172                                                              nl_txq_params,
3173                                                              txq_params_policy,
3174                                                              info->extack);
3175                         if (result)
3176                                 return result;
3177                         result = parse_txq_params(tb, &txq_params);
3178                         if (result)
3179                                 return result;
3180
3181                         result = rdev_set_txq_params(rdev, netdev,
3182                                                      &txq_params);
3183                         if (result)
3184                                 return result;
3185                 }
3186         }
3187
3188         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3189                 result = __nl80211_set_channel(
3190                         rdev,
3191                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3192                         info);
3193                 if (result)
3194                         return result;
3195         }
3196
3197         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3198                 struct wireless_dev *txp_wdev = wdev;
3199                 enum nl80211_tx_power_setting type;
3200                 int idx, mbm = 0;
3201
3202                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3203                         txp_wdev = NULL;
3204
3205                 if (!rdev->ops->set_tx_power)
3206                         return -EOPNOTSUPP;
3207
3208                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3209                 type = nla_get_u32(info->attrs[idx]);
3210
3211                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3212                     (type != NL80211_TX_POWER_AUTOMATIC))
3213                         return -EINVAL;
3214
3215                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3216                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3217                         mbm = nla_get_u32(info->attrs[idx]);
3218                 }
3219
3220                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3221                 if (result)
3222                         return result;
3223         }
3224
3225         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3226             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3227                 u32 tx_ant, rx_ant;
3228
3229                 if ((!rdev->wiphy.available_antennas_tx &&
3230                      !rdev->wiphy.available_antennas_rx) ||
3231                     !rdev->ops->set_antenna)
3232                         return -EOPNOTSUPP;
3233
3234                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3235                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3236
3237                 /* reject antenna configurations which don't match the
3238                  * available antenna masks, except for the "all" mask */
3239                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3240                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3241                         return -EINVAL;
3242
3243                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3244                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3245
3246                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3247                 if (result)
3248                         return result;
3249         }
3250
3251         changed = 0;
3252
3253         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3254                 retry_short = nla_get_u8(
3255                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3256
3257                 changed |= WIPHY_PARAM_RETRY_SHORT;
3258         }
3259
3260         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3261                 retry_long = nla_get_u8(
3262                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3263
3264                 changed |= WIPHY_PARAM_RETRY_LONG;
3265         }
3266
3267         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3268                 frag_threshold = nla_get_u32(
3269                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3270                 if (frag_threshold < 256)
3271                         return -EINVAL;
3272
3273                 if (frag_threshold != (u32) -1) {
3274                         /*
3275                          * Fragments (apart from the last one) are required to
3276                          * have even length. Make the fragmentation code
3277                          * simpler by stripping LSB should someone try to use
3278                          * odd threshold value.
3279                          */
3280                         frag_threshold &= ~0x1;
3281                 }
3282                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3283         }
3284
3285         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3286                 rts_threshold = nla_get_u32(
3287                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3288                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3289         }
3290
3291         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3292                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3293                         return -EINVAL;
3294
3295                 coverage_class = nla_get_u8(
3296                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3297                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3298         }
3299
3300         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3301                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3302                         return -EOPNOTSUPP;
3303
3304                 changed |= WIPHY_PARAM_DYN_ACK;
3305         }
3306
3307         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3308                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3309                                              NL80211_EXT_FEATURE_TXQS))
3310                         return -EOPNOTSUPP;
3311                 txq_limit = nla_get_u32(
3312                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3313                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3314         }
3315
3316         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3317                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3318                                              NL80211_EXT_FEATURE_TXQS))
3319                         return -EOPNOTSUPP;
3320                 txq_memory_limit = nla_get_u32(
3321                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3322                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3323         }
3324
3325         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3326                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3327                                              NL80211_EXT_FEATURE_TXQS))
3328                         return -EOPNOTSUPP;
3329                 txq_quantum = nla_get_u32(
3330                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3331                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3332         }
3333
3334         if (changed) {
3335                 u8 old_retry_short, old_retry_long;
3336                 u32 old_frag_threshold, old_rts_threshold;
3337                 u8 old_coverage_class;
3338                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3339
3340                 if (!rdev->ops->set_wiphy_params)
3341                         return -EOPNOTSUPP;
3342
3343                 old_retry_short = rdev->wiphy.retry_short;
3344                 old_retry_long = rdev->wiphy.retry_long;
3345                 old_frag_threshold = rdev->wiphy.frag_threshold;
3346                 old_rts_threshold = rdev->wiphy.rts_threshold;
3347                 old_coverage_class = rdev->wiphy.coverage_class;
3348                 old_txq_limit = rdev->wiphy.txq_limit;
3349                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3350                 old_txq_quantum = rdev->wiphy.txq_quantum;
3351
3352                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3353                         rdev->wiphy.retry_short = retry_short;
3354                 if (changed & WIPHY_PARAM_RETRY_LONG)
3355                         rdev->wiphy.retry_long = retry_long;
3356                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3357                         rdev->wiphy.frag_threshold = frag_threshold;
3358                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3359                         rdev->wiphy.rts_threshold = rts_threshold;
3360                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3361                         rdev->wiphy.coverage_class = coverage_class;
3362                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3363                         rdev->wiphy.txq_limit = txq_limit;
3364                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3365                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3366                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3367                         rdev->wiphy.txq_quantum = txq_quantum;
3368
3369                 result = rdev_set_wiphy_params(rdev, changed);
3370                 if (result) {
3371                         rdev->wiphy.retry_short = old_retry_short;
3372                         rdev->wiphy.retry_long = old_retry_long;
3373                         rdev->wiphy.frag_threshold = old_frag_threshold;
3374                         rdev->wiphy.rts_threshold = old_rts_threshold;
3375                         rdev->wiphy.coverage_class = old_coverage_class;
3376                         rdev->wiphy.txq_limit = old_txq_limit;
3377                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3378                         rdev->wiphy.txq_quantum = old_txq_quantum;
3379                         return result;
3380                 }
3381         }
3382         return 0;
3383 }
3384
3385 static int nl80211_send_chandef(struct sk_buff *msg,
3386                                 const struct cfg80211_chan_def *chandef)
3387 {
3388         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3389                 return -EINVAL;
3390
3391         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3392                         chandef->chan->center_freq))
3393                 return -ENOBUFS;
3394         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3395                         chandef->chan->freq_offset))
3396                 return -ENOBUFS;
3397         switch (chandef->width) {
3398         case NL80211_CHAN_WIDTH_20_NOHT:
3399         case NL80211_CHAN_WIDTH_20:
3400         case NL80211_CHAN_WIDTH_40:
3401                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3402                                 cfg80211_get_chandef_type(chandef)))
3403                         return -ENOBUFS;
3404                 break;
3405         default:
3406                 break;
3407         }
3408         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3409                 return -ENOBUFS;
3410         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3411                 return -ENOBUFS;
3412         if (chandef->center_freq2 &&
3413             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3414                 return -ENOBUFS;
3415         return 0;
3416 }
3417
3418 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3419                               struct cfg80211_registered_device *rdev,
3420                               struct wireless_dev *wdev,
3421                               enum nl80211_commands cmd)
3422 {
3423         struct net_device *dev = wdev->netdev;
3424         void *hdr;
3425
3426         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3427                 cmd != NL80211_CMD_DEL_INTERFACE &&
3428                 cmd != NL80211_CMD_SET_INTERFACE);
3429
3430         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3431         if (!hdr)
3432                 return -1;
3433
3434         if (dev &&
3435             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3436              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3437                 goto nla_put_failure;
3438
3439         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3440             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3441             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3442                               NL80211_ATTR_PAD) ||
3443             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3444             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3445                         rdev->devlist_generation ^
3446                         (cfg80211_rdev_list_generation << 2)) ||
3447             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3448                 goto nla_put_failure;
3449
3450         if (rdev->ops->get_channel) {
3451                 int ret;
3452                 struct cfg80211_chan_def chandef = {};
3453
3454                 ret = rdev_get_channel(rdev, wdev, &chandef);
3455                 if (ret == 0) {
3456                         if (nl80211_send_chandef(msg, &chandef))
3457                                 goto nla_put_failure;
3458                 }
3459         }
3460
3461         if (rdev->ops->get_tx_power) {
3462                 int dbm, ret;
3463
3464                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3465                 if (ret == 0 &&
3466                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3467                                 DBM_TO_MBM(dbm)))
3468                         goto nla_put_failure;
3469         }
3470
3471         wdev_lock(wdev);
3472         switch (wdev->iftype) {
3473         case NL80211_IFTYPE_AP:
3474                 if (wdev->ssid_len &&
3475                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3476                         goto nla_put_failure_locked;
3477                 break;
3478         case NL80211_IFTYPE_STATION:
3479         case NL80211_IFTYPE_P2P_CLIENT:
3480         case NL80211_IFTYPE_ADHOC: {
3481                 const u8 *ssid_ie;
3482                 if (!wdev->current_bss)
3483                         break;
3484                 rcu_read_lock();
3485                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3486                                                WLAN_EID_SSID);
3487                 if (ssid_ie &&
3488                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3489                         goto nla_put_failure_rcu_locked;
3490                 rcu_read_unlock();
3491                 break;
3492                 }
3493         default:
3494                 /* nothing */
3495                 break;
3496         }
3497         wdev_unlock(wdev);
3498
3499         if (rdev->ops->get_txq_stats) {
3500                 struct cfg80211_txq_stats txqstats = {};
3501                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3502
3503                 if (ret == 0 &&
3504                     !nl80211_put_txq_stats(msg, &txqstats,
3505                                            NL80211_ATTR_TXQ_STATS))
3506                         goto nla_put_failure;
3507         }
3508
3509         genlmsg_end(msg, hdr);
3510         return 0;
3511
3512  nla_put_failure_rcu_locked:
3513         rcu_read_unlock();
3514  nla_put_failure_locked:
3515         wdev_unlock(wdev);
3516  nla_put_failure:
3517         genlmsg_cancel(msg, hdr);
3518         return -EMSGSIZE;
3519 }
3520
3521 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3522 {
3523         int wp_idx = 0;
3524         int if_idx = 0;
3525         int wp_start = cb->args[0];
3526         int if_start = cb->args[1];
3527         int filter_wiphy = -1;
3528         struct cfg80211_registered_device *rdev;
3529         struct wireless_dev *wdev;
3530         int ret;
3531
3532         rtnl_lock();
3533         if (!cb->args[2]) {
3534                 struct nl80211_dump_wiphy_state state = {
3535                         .filter_wiphy = -1,
3536                 };
3537
3538                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3539                 if (ret)
3540                         goto out_unlock;
3541
3542                 filter_wiphy = state.filter_wiphy;
3543
3544                 /*
3545                  * if filtering, set cb->args[2] to +1 since 0 is the default
3546                  * value needed to determine that parsing is necessary.
3547                  */
3548                 if (filter_wiphy >= 0)
3549                         cb->args[2] = filter_wiphy + 1;
3550                 else
3551                         cb->args[2] = -1;
3552         } else if (cb->args[2] > 0) {
3553                 filter_wiphy = cb->args[2] - 1;
3554         }
3555
3556         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3557                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3558                         continue;
3559                 if (wp_idx < wp_start) {
3560                         wp_idx++;
3561                         continue;
3562                 }
3563
3564                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3565                         continue;
3566
3567                 if_idx = 0;
3568
3569                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3570                         if (if_idx < if_start) {
3571                                 if_idx++;
3572                                 continue;
3573                         }
3574                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3575                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3576                                                rdev, wdev,
3577                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3578                                 goto out;
3579                         }
3580                         if_idx++;
3581                 }
3582
3583                 wp_idx++;
3584         }
3585  out:
3586         cb->args[0] = wp_idx;
3587         cb->args[1] = if_idx;
3588
3589         ret = skb->len;
3590  out_unlock:
3591         rtnl_unlock();
3592
3593         return ret;
3594 }
3595
3596 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3597 {
3598         struct sk_buff *msg;
3599         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3600         struct wireless_dev *wdev = info->user_ptr[1];
3601
3602         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3603         if (!msg)
3604                 return -ENOMEM;
3605
3606         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3607                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3608                 nlmsg_free(msg);
3609                 return -ENOBUFS;
3610         }
3611
3612         return genlmsg_reply(msg, info);
3613 }
3614
3615 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3616         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3617         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3618         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3619         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3620         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3621         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3622 };
3623
3624 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3625 {
3626         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3627         int flag;
3628
3629         *mntrflags = 0;
3630
3631         if (!nla)
3632                 return -EINVAL;
3633
3634         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3635                 return -EINVAL;
3636
3637         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3638                 if (flags[flag])
3639                         *mntrflags |= (1<<flag);
3640
3641         *mntrflags |= MONITOR_FLAG_CHANGED;
3642
3643         return 0;
3644 }
3645
3646 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3647                                      enum nl80211_iftype type,
3648                                      struct genl_info *info,
3649                                      struct vif_params *params)
3650 {
3651         bool change = false;
3652         int err;
3653
3654         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3655                 if (type != NL80211_IFTYPE_MONITOR)
3656                         return -EINVAL;
3657
3658                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3659                                           &params->flags);
3660                 if (err)
3661                         return err;
3662
3663                 change = true;
3664         }
3665
3666         if (params->flags & MONITOR_FLAG_ACTIVE &&
3667             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3668                 return -EOPNOTSUPP;
3669
3670         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3671                 const u8 *mumimo_groups;
3672                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3673
3674                 if (type != NL80211_IFTYPE_MONITOR)
3675                         return -EINVAL;
3676
3677                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3678                         return -EOPNOTSUPP;
3679
3680                 mumimo_groups =
3681                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3682
3683                 /* bits 0 and 63 are reserved and must be zero */
3684                 if ((mumimo_groups[0] & BIT(0)) ||
3685                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3686                         return -EINVAL;
3687
3688                 params->vht_mumimo_groups = mumimo_groups;
3689                 change = true;
3690         }
3691
3692         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3693                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3694
3695                 if (type != NL80211_IFTYPE_MONITOR)
3696                         return -EINVAL;
3697
3698                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3699                         return -EOPNOTSUPP;
3700
3701                 params->vht_mumimo_follow_addr =
3702                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3703                 change = true;
3704         }
3705
3706         return change ? 1 : 0;
3707 }
3708
3709 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3710                                struct net_device *netdev, u8 use_4addr,
3711                                enum nl80211_iftype iftype)
3712 {
3713         if (!use_4addr) {
3714                 if (netdev && netif_is_bridge_port(netdev))
3715                         return -EBUSY;
3716                 return 0;
3717         }
3718
3719         switch (iftype) {
3720         case NL80211_IFTYPE_AP_VLAN:
3721                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3722                         return 0;
3723                 break;
3724         case NL80211_IFTYPE_STATION:
3725                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3726                         return 0;
3727                 break;
3728         default:
3729                 break;
3730         }
3731
3732         return -EOPNOTSUPP;
3733 }
3734
3735 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3736 {
3737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3738         struct vif_params params;
3739         int err;
3740         enum nl80211_iftype otype, ntype;
3741         struct net_device *dev = info->user_ptr[1];
3742         bool change = false;
3743
3744         memset(&params, 0, sizeof(params));
3745
3746         otype = ntype = dev->ieee80211_ptr->iftype;
3747
3748         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3749                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3750                 if (otype != ntype)
3751                         change = true;
3752         }
3753
3754         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3755                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3756
3757                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3758                         return -EINVAL;
3759                 if (netif_running(dev))
3760                         return -EBUSY;
3761
3762                 wdev_lock(wdev);
3763                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3764                              IEEE80211_MAX_MESH_ID_LEN);
3765                 wdev->mesh_id_up_len =
3766                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3767                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3768                        wdev->mesh_id_up_len);
3769                 wdev_unlock(wdev);
3770         }
3771
3772         if (info->attrs[NL80211_ATTR_4ADDR]) {
3773                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3774                 change = true;
3775                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3776                 if (err)
3777                         return err;
3778         } else {
3779                 params.use_4addr = -1;
3780         }
3781
3782         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3783         if (err < 0)
3784                 return err;
3785         if (err > 0)
3786                 change = true;
3787
3788         if (change)
3789                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3790         else
3791                 err = 0;
3792
3793         if (!err && params.use_4addr != -1)
3794                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3795
3796         if (change && !err) {
3797                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3798
3799                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3800         }
3801
3802         return err;
3803 }
3804
3805 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3806 {
3807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3808         struct vif_params params;
3809         struct wireless_dev *wdev;
3810         struct sk_buff *msg;
3811         int err;
3812         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3813
3814         /* to avoid failing a new interface creation due to pending removal */
3815         cfg80211_destroy_ifaces(rdev);
3816
3817         memset(&params, 0, sizeof(params));
3818
3819         if (!info->attrs[NL80211_ATTR_IFNAME])
3820                 return -EINVAL;
3821
3822         if (info->attrs[NL80211_ATTR_IFTYPE])
3823                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3824
3825         if (!rdev->ops->add_virtual_intf)
3826                 return -EOPNOTSUPP;
3827
3828         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3829              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3830             info->attrs[NL80211_ATTR_MAC]) {
3831                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3832                            ETH_ALEN);
3833                 if (!is_valid_ether_addr(params.macaddr))
3834                         return -EADDRNOTAVAIL;
3835         }
3836
3837         if (info->attrs[NL80211_ATTR_4ADDR]) {
3838                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3839                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3840                 if (err)
3841                         return err;
3842         }
3843
3844         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3845                 return -EOPNOTSUPP;
3846
3847         err = nl80211_parse_mon_options(rdev, type, info, &params);
3848         if (err < 0)
3849                 return err;
3850
3851         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3852         if (!msg)
3853                 return -ENOMEM;
3854
3855         wdev = rdev_add_virtual_intf(rdev,
3856                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3857                                 NET_NAME_USER, type, &params);
3858         if (WARN_ON(!wdev)) {
3859                 nlmsg_free(msg);
3860                 return -EPROTO;
3861         } else if (IS_ERR(wdev)) {
3862                 nlmsg_free(msg);
3863                 return PTR_ERR(wdev);
3864         }
3865
3866         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3867                 wdev->owner_nlportid = info->snd_portid;
3868
3869         switch (type) {
3870         case NL80211_IFTYPE_MESH_POINT:
3871                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3872                         break;
3873                 wdev_lock(wdev);
3874                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3875                              IEEE80211_MAX_MESH_ID_LEN);
3876                 wdev->mesh_id_up_len =
3877                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3878                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3879                        wdev->mesh_id_up_len);
3880                 wdev_unlock(wdev);
3881                 break;
3882         case NL80211_IFTYPE_NAN:
3883         case NL80211_IFTYPE_P2P_DEVICE:
3884                 /*
3885                  * P2P Device and NAN do not have a netdev, so don't go
3886                  * through the netdev notifier and must be added here
3887                  */
3888                 cfg80211_init_wdev(rdev, wdev);
3889                 break;
3890         default:
3891                 break;
3892         }
3893
3894         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3895                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3896                 nlmsg_free(msg);
3897                 return -ENOBUFS;
3898         }
3899
3900         return genlmsg_reply(msg, info);
3901 }
3902
3903 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3904 {
3905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3906         struct wireless_dev *wdev = info->user_ptr[1];
3907
3908         if (!rdev->ops->del_virtual_intf)
3909                 return -EOPNOTSUPP;
3910
3911         /*
3912          * If we remove a wireless device without a netdev then clear
3913          * user_ptr[1] so that nl80211_post_doit won't dereference it
3914          * to check if it needs to do dev_put(). Otherwise it crashes
3915          * since the wdev has been freed, unlike with a netdev where
3916          * we need the dev_put() for the netdev to really be freed.
3917          */
3918         if (!wdev->netdev)
3919                 info->user_ptr[1] = NULL;
3920
3921         return rdev_del_virtual_intf(rdev, wdev);
3922 }
3923
3924 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3925 {
3926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3927         struct net_device *dev = info->user_ptr[1];
3928         u16 noack_map;
3929
3930         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3931                 return -EINVAL;
3932
3933         if (!rdev->ops->set_noack_map)
3934                 return -EOPNOTSUPP;
3935
3936         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3937
3938         return rdev_set_noack_map(rdev, dev, noack_map);
3939 }
3940
3941 struct get_key_cookie {
3942         struct sk_buff *msg;
3943         int error;
3944         int idx;
3945 };
3946
3947 static void get_key_callback(void *c, struct key_params *params)
3948 {
3949         struct nlattr *key;
3950         struct get_key_cookie *cookie = c;
3951
3952         if ((params->key &&
3953              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3954                      params->key_len, params->key)) ||
3955             (params->seq &&
3956              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3957                      params->seq_len, params->seq)) ||
3958             (params->cipher &&
3959              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3960                          params->cipher)))
3961                 goto nla_put_failure;
3962
3963         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3964         if (!key)
3965                 goto nla_put_failure;
3966
3967         if ((params->key &&
3968              nla_put(cookie->msg, NL80211_KEY_DATA,
3969                      params->key_len, params->key)) ||
3970             (params->seq &&
3971              nla_put(cookie->msg, NL80211_KEY_SEQ,
3972                      params->seq_len, params->seq)) ||
3973             (params->cipher &&
3974              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3975                          params->cipher)))
3976                 goto nla_put_failure;
3977
3978         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3979                 goto nla_put_failure;
3980
3981         nla_nest_end(cookie->msg, key);
3982
3983         return;
3984  nla_put_failure:
3985         cookie->error = 1;
3986 }
3987
3988 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3989 {
3990         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3991         int err;
3992         struct net_device *dev = info->user_ptr[1];
3993         u8 key_idx = 0;
3994         const u8 *mac_addr = NULL;
3995         bool pairwise;
3996         struct get_key_cookie cookie = {
3997                 .error = 0,
3998         };
3999         void *hdr;
4000         struct sk_buff *msg;
4001         bool bigtk_support = false;
4002
4003         if (wiphy_ext_feature_isset(&rdev->wiphy,
4004                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4005                 bigtk_support = true;
4006
4007         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4008              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4009             wiphy_ext_feature_isset(&rdev->wiphy,
4010                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4011                 bigtk_support = true;
4012
4013         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4014                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4015
4016                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4017                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4018                         return -EINVAL;
4019                 }
4020         }
4021
4022         if (info->attrs[NL80211_ATTR_MAC])
4023                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4024
4025         pairwise = !!mac_addr;
4026         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4027                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4028
4029                 if (kt != NL80211_KEYTYPE_GROUP &&
4030                     kt != NL80211_KEYTYPE_PAIRWISE)
4031                         return -EINVAL;
4032                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4033         }
4034
4035         if (!rdev->ops->get_key)
4036                 return -EOPNOTSUPP;
4037
4038         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4039                 return -ENOENT;
4040
4041         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4042         if (!msg)
4043                 return -ENOMEM;
4044
4045         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4046                              NL80211_CMD_NEW_KEY);
4047         if (!hdr)
4048                 goto nla_put_failure;
4049
4050         cookie.msg = msg;
4051         cookie.idx = key_idx;
4052
4053         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4054             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4055                 goto nla_put_failure;
4056         if (mac_addr &&
4057             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4058                 goto nla_put_failure;
4059
4060         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4061                            get_key_callback);
4062
4063         if (err)
4064                 goto free_msg;
4065
4066         if (cookie.error)
4067                 goto nla_put_failure;
4068
4069         genlmsg_end(msg, hdr);
4070         return genlmsg_reply(msg, info);
4071
4072  nla_put_failure:
4073         err = -ENOBUFS;
4074  free_msg:
4075         nlmsg_free(msg);
4076         return err;
4077 }
4078
4079 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4080 {
4081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4082         struct key_parse key;
4083         int err;
4084         struct net_device *dev = info->user_ptr[1];
4085
4086         err = nl80211_parse_key(info, &key);
4087         if (err)
4088                 return err;
4089
4090         if (key.idx < 0)
4091                 return -EINVAL;
4092
4093         /* Only support setting default key and
4094          * Extended Key ID action NL80211_KEY_SET_TX.
4095          */
4096         if (!key.def && !key.defmgmt && !key.defbeacon &&
4097             !(key.p.mode == NL80211_KEY_SET_TX))
4098                 return -EINVAL;
4099
4100         wdev_lock(dev->ieee80211_ptr);
4101
4102         if (key.def) {
4103                 if (!rdev->ops->set_default_key) {
4104                         err = -EOPNOTSUPP;
4105                         goto out;
4106                 }
4107
4108                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4109                 if (err)
4110                         goto out;
4111
4112                 err = rdev_set_default_key(rdev, dev, key.idx,
4113                                                  key.def_uni, key.def_multi);
4114
4115                 if (err)
4116                         goto out;
4117
4118 #ifdef CONFIG_CFG80211_WEXT
4119                 dev->ieee80211_ptr->wext.default_key = key.idx;
4120 #endif
4121         } else if (key.defmgmt) {
4122                 if (key.def_uni || !key.def_multi) {
4123                         err = -EINVAL;
4124                         goto out;
4125                 }
4126
4127                 if (!rdev->ops->set_default_mgmt_key) {
4128                         err = -EOPNOTSUPP;
4129                         goto out;
4130                 }
4131
4132                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4133                 if (err)
4134                         goto out;
4135
4136                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4137                 if (err)
4138                         goto out;
4139
4140 #ifdef CONFIG_CFG80211_WEXT
4141                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4142 #endif
4143         } else if (key.defbeacon) {
4144                 if (key.def_uni || !key.def_multi) {
4145                         err = -EINVAL;
4146                         goto out;
4147                 }
4148
4149                 if (!rdev->ops->set_default_beacon_key) {
4150                         err = -EOPNOTSUPP;
4151                         goto out;
4152                 }
4153
4154                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4155                 if (err)
4156                         goto out;
4157
4158                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4159                 if (err)
4160                         goto out;
4161         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4162                    wiphy_ext_feature_isset(&rdev->wiphy,
4163                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4164                 u8 *mac_addr = NULL;
4165
4166                 if (info->attrs[NL80211_ATTR_MAC])
4167                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4168
4169                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4170                         err = -EINVAL;
4171                         goto out;
4172                 }
4173
4174                 err = rdev_add_key(rdev, dev, key.idx,
4175                                    NL80211_KEYTYPE_PAIRWISE,
4176                                    mac_addr, &key.p);
4177         } else {
4178                 err = -EINVAL;
4179         }
4180  out:
4181         wdev_unlock(dev->ieee80211_ptr);
4182
4183         return err;
4184 }
4185
4186 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4187 {
4188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4189         int err;
4190         struct net_device *dev = info->user_ptr[1];
4191         struct key_parse key;
4192         const u8 *mac_addr = NULL;
4193
4194         err = nl80211_parse_key(info, &key);
4195         if (err)
4196                 return err;
4197
4198         if (!key.p.key) {
4199                 GENL_SET_ERR_MSG(info, "no key");
4200                 return -EINVAL;
4201         }
4202
4203         if (info->attrs[NL80211_ATTR_MAC])
4204                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4205
4206         if (key.type == -1) {
4207                 if (mac_addr)
4208                         key.type = NL80211_KEYTYPE_PAIRWISE;
4209                 else
4210                         key.type = NL80211_KEYTYPE_GROUP;
4211         }
4212
4213         /* for now */
4214         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4215             key.type != NL80211_KEYTYPE_GROUP) {
4216                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4217                 return -EINVAL;
4218         }
4219
4220         if (key.type == NL80211_KEYTYPE_GROUP &&
4221             info->attrs[NL80211_ATTR_VLAN_ID])
4222                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4223
4224         if (!rdev->ops->add_key)
4225                 return -EOPNOTSUPP;
4226
4227         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4228                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4229                                            mac_addr)) {
4230                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4231                 return -EINVAL;
4232         }
4233
4234         wdev_lock(dev->ieee80211_ptr);
4235         err = nl80211_key_allowed(dev->ieee80211_ptr);
4236         if (err)
4237                 GENL_SET_ERR_MSG(info, "key not allowed");
4238         if (!err) {
4239                 err = rdev_add_key(rdev, dev, key.idx,
4240                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4241                                     mac_addr, &key.p);
4242                 if (err)
4243                         GENL_SET_ERR_MSG(info, "key addition failed");
4244         }
4245         wdev_unlock(dev->ieee80211_ptr);
4246
4247         return err;
4248 }
4249
4250 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4251 {
4252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4253         int err;
4254         struct net_device *dev = info->user_ptr[1];
4255         u8 *mac_addr = NULL;
4256         struct key_parse key;
4257
4258         err = nl80211_parse_key(info, &key);
4259         if (err)
4260                 return err;
4261
4262         if (key.idx < 0)
4263                 return -EINVAL;
4264
4265         if (info->attrs[NL80211_ATTR_MAC])
4266                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4267
4268         if (key.type == -1) {
4269                 if (mac_addr)
4270                         key.type = NL80211_KEYTYPE_PAIRWISE;
4271                 else
4272                         key.type = NL80211_KEYTYPE_GROUP;
4273         }
4274
4275         /* for now */
4276         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4277             key.type != NL80211_KEYTYPE_GROUP)
4278                 return -EINVAL;
4279
4280         if (!rdev->ops->del_key)
4281                 return -EOPNOTSUPP;
4282
4283         wdev_lock(dev->ieee80211_ptr);
4284         err = nl80211_key_allowed(dev->ieee80211_ptr);
4285
4286         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4287             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4288                 err = -ENOENT;
4289
4290         if (!err)
4291                 err = rdev_del_key(rdev, dev, key.idx,
4292                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4293                                    mac_addr);
4294
4295 #ifdef CONFIG_CFG80211_WEXT
4296         if (!err) {
4297                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4298                         dev->ieee80211_ptr->wext.default_key = -1;
4299                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4300                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4301         }
4302 #endif
4303         wdev_unlock(dev->ieee80211_ptr);
4304
4305         return err;
4306 }
4307
4308 /* This function returns an error or the number of nested attributes */
4309 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4310 {
4311         struct nlattr *attr;
4312         int n_entries = 0, tmp;
4313
4314         nla_for_each_nested(attr, nl_attr, tmp) {
4315                 if (nla_len(attr) != ETH_ALEN)
4316                         return -EINVAL;
4317
4318                 n_entries++;
4319         }
4320
4321         return n_entries;
4322 }
4323
4324 /*
4325  * This function parses ACL information and allocates memory for ACL data.
4326  * On successful return, the calling function is responsible to free the
4327  * ACL buffer returned by this function.
4328  */
4329 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4330                                                 struct genl_info *info)
4331 {
4332         enum nl80211_acl_policy acl_policy;
4333         struct nlattr *attr;
4334         struct cfg80211_acl_data *acl;
4335         int i = 0, n_entries, tmp;
4336
4337         if (!wiphy->max_acl_mac_addrs)
4338                 return ERR_PTR(-EOPNOTSUPP);
4339
4340         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4341                 return ERR_PTR(-EINVAL);
4342
4343         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4344         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4345             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4346                 return ERR_PTR(-EINVAL);
4347
4348         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4349                 return ERR_PTR(-EINVAL);
4350
4351         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4352         if (n_entries < 0)
4353                 return ERR_PTR(n_entries);
4354
4355         if (n_entries > wiphy->max_acl_mac_addrs)
4356                 return ERR_PTR(-ENOTSUPP);
4357
4358         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4359         if (!acl)
4360                 return ERR_PTR(-ENOMEM);
4361
4362         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4363                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4364                 i++;
4365         }
4366
4367         acl->n_acl_entries = n_entries;
4368         acl->acl_policy = acl_policy;
4369
4370         return acl;
4371 }
4372
4373 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4374 {
4375         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4376         struct net_device *dev = info->user_ptr[1];
4377         struct cfg80211_acl_data *acl;
4378         int err;
4379
4380         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4381             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4382                 return -EOPNOTSUPP;
4383
4384         if (!dev->ieee80211_ptr->beacon_interval)
4385                 return -EINVAL;
4386
4387         acl = parse_acl_data(&rdev->wiphy, info);
4388         if (IS_ERR(acl))
4389                 return PTR_ERR(acl);
4390
4391         err = rdev_set_mac_acl(rdev, dev, acl);
4392
4393         kfree(acl);
4394
4395         return err;
4396 }
4397
4398 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4399                            u8 *rates, u8 rates_len)
4400 {
4401         u8 i;
4402         u32 mask = 0;
4403
4404         for (i = 0; i < rates_len; i++) {
4405                 int rate = (rates[i] & 0x7f) * 5;
4406                 int ridx;
4407
4408                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4409                         struct ieee80211_rate *srate =
4410                                 &sband->bitrates[ridx];
4411                         if (rate == srate->bitrate) {
4412                                 mask |= 1 << ridx;
4413                                 break;
4414                         }
4415                 }
4416                 if (ridx == sband->n_bitrates)
4417                         return 0; /* rate not found */
4418         }
4419
4420         return mask;
4421 }
4422
4423 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4424                                u8 *rates, u8 rates_len,
4425                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4426 {
4427         u8 i;
4428
4429         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4430
4431         for (i = 0; i < rates_len; i++) {
4432                 int ridx, rbit;
4433
4434                 ridx = rates[i] / 8;
4435                 rbit = BIT(rates[i] % 8);
4436
4437                 /* check validity */
4438                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4439                         return false;
4440
4441                 /* check availability */
4442                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4443                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4444                         mcs[ridx] |= rbit;
4445                 else
4446                         return false;
4447         }
4448
4449         return true;
4450 }
4451
4452 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4453 {
4454         u16 mcs_mask = 0;
4455
4456         switch (vht_mcs_map) {
4457         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4458                 break;
4459         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4460                 mcs_mask = 0x00FF;
4461                 break;
4462         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4463                 mcs_mask = 0x01FF;
4464                 break;
4465         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4466                 mcs_mask = 0x03FF;
4467                 break;
4468         default:
4469                 break;
4470         }
4471
4472         return mcs_mask;
4473 }
4474
4475 static void vht_build_mcs_mask(u16 vht_mcs_map,
4476                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4477 {
4478         u8 nss;
4479
4480         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4481                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4482                 vht_mcs_map >>= 2;
4483         }
4484 }
4485
4486 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4487                              struct nl80211_txrate_vht *txrate,
4488                              u16 mcs[NL80211_VHT_NSS_MAX])
4489 {
4490         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4491         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4492         u8 i;
4493
4494         if (!sband->vht_cap.vht_supported)
4495                 return false;
4496
4497         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4498
4499         /* Build vht_mcs_mask from VHT capabilities */
4500         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4501
4502         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4503                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4504                         mcs[i] = txrate->mcs[i];
4505                 else
4506                         return false;
4507         }
4508
4509         return true;
4510 }
4511
4512 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4513 {
4514         switch (he_mcs_map) {
4515         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4516                 return 0;
4517         case IEEE80211_HE_MCS_SUPPORT_0_7:
4518                 return 0x00FF;
4519         case IEEE80211_HE_MCS_SUPPORT_0_9:
4520                 return 0x03FF;
4521         case IEEE80211_HE_MCS_SUPPORT_0_11:
4522                 return 0xFFF;
4523         default:
4524                 break;
4525         }
4526         return 0;
4527 }
4528
4529 static void he_build_mcs_mask(u16 he_mcs_map,
4530                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4531 {
4532         u8 nss;
4533
4534         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4535                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4536                 he_mcs_map >>= 2;
4537         }
4538 }
4539
4540 static u16 he_get_txmcsmap(struct genl_info *info,
4541                            const struct ieee80211_sta_he_cap *he_cap)
4542 {
4543         struct net_device *dev = info->user_ptr[1];
4544         struct wireless_dev *wdev = dev->ieee80211_ptr;
4545         __le16  tx_mcs;
4546
4547         switch (wdev->chandef.width) {
4548         case NL80211_CHAN_WIDTH_80P80:
4549                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4550                 break;
4551         case NL80211_CHAN_WIDTH_160:
4552                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4553                 break;
4554         default:
4555                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4556                 break;
4557         }
4558         return le16_to_cpu(tx_mcs);
4559 }
4560
4561 static bool he_set_mcs_mask(struct genl_info *info,
4562                             struct wireless_dev *wdev,
4563                             struct ieee80211_supported_band *sband,
4564                             struct nl80211_txrate_he *txrate,
4565                             u16 mcs[NL80211_HE_NSS_MAX])
4566 {
4567         const struct ieee80211_sta_he_cap *he_cap;
4568         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4569         u16 tx_mcs_map = 0;
4570         u8 i;
4571
4572         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4573         if (!he_cap)
4574                 return false;
4575
4576         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4577
4578         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4579
4580         /* Build he_mcs_mask from HE capabilities */
4581         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4582
4583         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4584                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4585                         mcs[i] = txrate->mcs[i];
4586                 else
4587                         return false;
4588         }
4589
4590         return true;
4591 }
4592
4593 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4594                                          struct nlattr *attrs[],
4595                                          enum nl80211_attrs attr,
4596                                          struct cfg80211_bitrate_mask *mask,
4597                                          struct net_device *dev)
4598 {
4599         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4601         struct wireless_dev *wdev = dev->ieee80211_ptr;
4602         int rem, i;
4603         struct nlattr *tx_rates;
4604         struct ieee80211_supported_band *sband;
4605         u16 vht_tx_mcs_map, he_tx_mcs_map;
4606
4607         memset(mask, 0, sizeof(*mask));
4608         /* Default to all rates enabled */
4609         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4610                 const struct ieee80211_sta_he_cap *he_cap;
4611
4612                 sband = rdev->wiphy.bands[i];
4613
4614                 if (!sband)
4615                         continue;
4616
4617                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4618                 memcpy(mask->control[i].ht_mcs,
4619                        sband->ht_cap.mcs.rx_mask,
4620                        sizeof(mask->control[i].ht_mcs));
4621
4622                 if (!sband->vht_cap.vht_supported)
4623                         continue;
4624
4625                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4626                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4627
4628                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4629                 if (!he_cap)
4630                         continue;
4631
4632                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4633                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4634
4635                 mask->control[i].he_gi = 0xFF;
4636                 mask->control[i].he_ltf = 0xFF;
4637         }
4638
4639         /* if no rates are given set it back to the defaults */
4640         if (!attrs[attr])
4641                 goto out;
4642
4643         /* The nested attribute uses enum nl80211_band as the index. This maps
4644          * directly to the enum nl80211_band values used in cfg80211.
4645          */
4646         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4647         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4648                 enum nl80211_band band = nla_type(tx_rates);
4649                 int err;
4650
4651                 if (band < 0 || band >= NUM_NL80211_BANDS)
4652                         return -EINVAL;
4653                 sband = rdev->wiphy.bands[band];
4654                 if (sband == NULL)
4655                         return -EINVAL;
4656                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4657                                                   tx_rates,
4658                                                   nl80211_txattr_policy,
4659                                                   info->extack);
4660                 if (err)
4661                         return err;
4662                 if (tb[NL80211_TXRATE_LEGACY]) {
4663                         mask->control[band].legacy = rateset_to_mask(
4664                                 sband,
4665                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4666                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4667                         if ((mask->control[band].legacy == 0) &&
4668                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4669                                 return -EINVAL;
4670                 }
4671                 if (tb[NL80211_TXRATE_HT]) {
4672                         if (!ht_rateset_to_mask(
4673                                         sband,
4674                                         nla_data(tb[NL80211_TXRATE_HT]),
4675                                         nla_len(tb[NL80211_TXRATE_HT]),
4676                                         mask->control[band].ht_mcs))
4677                                 return -EINVAL;
4678                 }
4679                 if (tb[NL80211_TXRATE_VHT]) {
4680                         if (!vht_set_mcs_mask(
4681                                         sband,
4682                                         nla_data(tb[NL80211_TXRATE_VHT]),
4683                                         mask->control[band].vht_mcs))
4684                                 return -EINVAL;
4685                 }
4686                 if (tb[NL80211_TXRATE_GI]) {
4687                         mask->control[band].gi =
4688                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4689                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4690                                 return -EINVAL;
4691                 }
4692                 if (tb[NL80211_TXRATE_HE] &&
4693                     !he_set_mcs_mask(info, wdev, sband,
4694                                      nla_data(tb[NL80211_TXRATE_HE]),
4695                                      mask->control[band].he_mcs))
4696                         return -EINVAL;
4697                 if (tb[NL80211_TXRATE_HE_GI])
4698                         mask->control[band].he_gi =
4699                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4700                 if (tb[NL80211_TXRATE_HE_LTF])
4701                         mask->control[band].he_ltf =
4702                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4703
4704                 if (mask->control[band].legacy == 0) {
4705                         /* don't allow empty legacy rates if HT, VHT or HE
4706                          * are not even supported.
4707                          */
4708                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4709                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4710                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4711                                 return -EINVAL;
4712
4713                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4714                                 if (mask->control[band].ht_mcs[i])
4715                                         goto out;
4716
4717                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4718                                 if (mask->control[band].vht_mcs[i])
4719                                         goto out;
4720
4721                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4722                                 if (mask->control[band].he_mcs[i])
4723                                         goto out;
4724
4725                         /* legacy and mcs rates may not be both empty */
4726                         return -EINVAL;
4727                 }
4728         }
4729
4730 out:
4731         return 0;
4732 }
4733
4734 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4735                                    enum nl80211_band band,
4736                                    struct cfg80211_bitrate_mask *beacon_rate)
4737 {
4738         u32 count_ht, count_vht, i;
4739         u32 rate = beacon_rate->control[band].legacy;
4740
4741         /* Allow only one rate */
4742         if (hweight32(rate) > 1)
4743                 return -EINVAL;
4744
4745         count_ht = 0;
4746         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4747                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4748                         return -EINVAL;
4749                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4750                         count_ht++;
4751                         if (count_ht > 1)
4752                                 return -EINVAL;
4753                 }
4754                 if (count_ht && rate)
4755                         return -EINVAL;
4756         }
4757
4758         count_vht = 0;
4759         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4760                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4761                         return -EINVAL;
4762                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4763                         count_vht++;
4764                         if (count_vht > 1)
4765                                 return -EINVAL;
4766                 }
4767                 if (count_vht && rate)
4768                         return -EINVAL;
4769         }
4770
4771         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4772                 return -EINVAL;
4773
4774         if (rate &&
4775             !wiphy_ext_feature_isset(&rdev->wiphy,
4776                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4777                 return -EINVAL;
4778         if (count_ht &&
4779             !wiphy_ext_feature_isset(&rdev->wiphy,
4780                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4781                 return -EINVAL;
4782         if (count_vht &&
4783             !wiphy_ext_feature_isset(&rdev->wiphy,
4784                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4785                 return -EINVAL;
4786
4787         return 0;
4788 }
4789
4790 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4791                                 struct nlattr *attrs[],
4792                                 struct cfg80211_beacon_data *bcn)
4793 {
4794         bool haveinfo = false;
4795         int err;
4796
4797         memset(bcn, 0, sizeof(*bcn));
4798
4799         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4800                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4801                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4802                 if (!bcn->head_len)
4803                         return -EINVAL;
4804                 haveinfo = true;
4805         }
4806
4807         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4808                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4809                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4810                 haveinfo = true;
4811         }
4812
4813         if (!haveinfo)
4814                 return -EINVAL;
4815
4816         if (attrs[NL80211_ATTR_IE]) {
4817                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4818                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4819         }
4820
4821         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4822                 bcn->proberesp_ies =
4823                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4824                 bcn->proberesp_ies_len =
4825                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4826         }
4827
4828         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4829                 bcn->assocresp_ies =
4830                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4831                 bcn->assocresp_ies_len =
4832                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4833         }
4834
4835         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4836                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4837                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4838         }
4839
4840         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4841                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4842
4843                 err = nla_parse_nested_deprecated(tb,
4844                                                   NL80211_FTM_RESP_ATTR_MAX,
4845                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4846                                                   NULL, NULL);
4847                 if (err)
4848                         return err;
4849
4850                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4851                     wiphy_ext_feature_isset(&rdev->wiphy,
4852                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4853                         bcn->ftm_responder = 1;
4854                 else
4855                         return -EOPNOTSUPP;
4856
4857                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4858                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4859                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4860                 }
4861
4862                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4863                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4864                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4865                 }
4866         } else {
4867                 bcn->ftm_responder = -1;
4868         }
4869
4870         return 0;
4871 }
4872
4873 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4874                                     struct ieee80211_he_obss_pd *he_obss_pd)
4875 {
4876         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4877         int err;
4878
4879         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4880                                he_obss_pd_policy, NULL);
4881         if (err)
4882                 return err;
4883
4884         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4885                 return -EINVAL;
4886
4887         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4888
4889         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4890                 he_obss_pd->min_offset =
4891                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4892         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4893                 he_obss_pd->max_offset =
4894                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4895         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4896                 he_obss_pd->non_srg_max_offset =
4897                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4898
4899         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4900                 return -EINVAL;
4901
4902         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4903                 memcpy(he_obss_pd->bss_color_bitmap,
4904                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4905                        sizeof(he_obss_pd->bss_color_bitmap));
4906
4907         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4908                 memcpy(he_obss_pd->partial_bssid_bitmap,
4909                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4910                        sizeof(he_obss_pd->partial_bssid_bitmap));
4911
4912         he_obss_pd->enable = true;
4913
4914         return 0;
4915 }
4916
4917 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4918                                       struct cfg80211_he_bss_color *he_bss_color)
4919 {
4920         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4921         int err;
4922
4923         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4924                                he_bss_color_policy, NULL);
4925         if (err)
4926                 return err;
4927
4928         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4929                 return -EINVAL;
4930
4931         he_bss_color->color =
4932                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4933         he_bss_color->enabled =
4934                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4935         he_bss_color->partial =
4936                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4937
4938         return 0;
4939 }
4940
4941 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
4942                                         struct nlattr *attrs,
4943                                         struct cfg80211_ap_settings *params)
4944 {
4945         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
4946         int ret;
4947         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
4948
4949         if (!wiphy_ext_feature_isset(&rdev->wiphy,
4950                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
4951                 return -EINVAL;
4952
4953         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
4954                                NULL, NULL);
4955         if (ret)
4956                 return ret;
4957
4958         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
4959             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
4960             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
4961                 return -EINVAL;
4962
4963         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4964         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4965         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
4966         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
4967
4968         return 0;
4969 }
4970
4971 static int
4972 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
4973                                      struct nlattr *attrs,
4974                                      struct cfg80211_ap_settings *params)
4975 {
4976         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
4977         int ret;
4978         struct cfg80211_unsol_bcast_probe_resp *presp =
4979                                         &params->unsol_bcast_probe_resp;
4980
4981         if (!wiphy_ext_feature_isset(&rdev->wiphy,
4982                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
4983                 return -EINVAL;
4984
4985         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
4986                                attrs, NULL, NULL);
4987         if (ret)
4988                 return ret;
4989
4990         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
4991             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
4992                 return -EINVAL;
4993
4994         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
4995         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
4996         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
4997         return 0;
4998 }
4999
5000 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5001                                             const u8 *rates)
5002 {
5003         int i;
5004
5005         if (!rates)
5006                 return;
5007
5008         for (i = 0; i < rates[1]; i++) {
5009                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5010                         params->ht_required = true;
5011                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5012                         params->vht_required = true;
5013                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5014                         params->he_required = true;
5015         }
5016 }
5017
5018 /*
5019  * Since the nl80211 API didn't include, from the beginning, attributes about
5020  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5021  * benefit of drivers that rebuild IEs in the firmware.
5022  */
5023 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5024 {
5025         const struct cfg80211_beacon_data *bcn = &params->beacon;
5026         size_t ies_len = bcn->tail_len;
5027         const u8 *ies = bcn->tail;
5028         const u8 *rates;
5029         const u8 *cap;
5030
5031         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5032         nl80211_check_ap_rate_selectors(params, rates);
5033
5034         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5035         nl80211_check_ap_rate_selectors(params, rates);
5036
5037         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5038         if (cap && cap[1] >= sizeof(*params->ht_cap))
5039                 params->ht_cap = (void *)(cap + 2);
5040         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5041         if (cap && cap[1] >= sizeof(*params->vht_cap))
5042                 params->vht_cap = (void *)(cap + 2);
5043         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5044         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5045                 params->he_cap = (void *)(cap + 3);
5046         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5047         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5048                 params->he_oper = (void *)(cap + 3);
5049 }
5050
5051 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5052                                    struct cfg80211_ap_settings *params)
5053 {
5054         struct wireless_dev *wdev;
5055         bool ret = false;
5056
5057         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5058                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5059                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5060                         continue;
5061
5062                 if (!wdev->preset_chandef.chan)
5063                         continue;
5064
5065                 params->chandef = wdev->preset_chandef;
5066                 ret = true;
5067                 break;
5068         }
5069
5070         return ret;
5071 }
5072
5073 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5074                                     enum nl80211_auth_type auth_type,
5075                                     enum nl80211_commands cmd)
5076 {
5077         if (auth_type > NL80211_AUTHTYPE_MAX)
5078                 return false;
5079
5080         switch (cmd) {
5081         case NL80211_CMD_AUTHENTICATE:
5082                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5083                     auth_type == NL80211_AUTHTYPE_SAE)
5084                         return false;
5085                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5086                                              NL80211_EXT_FEATURE_FILS_STA) &&
5087                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5088                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5089                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5090                         return false;
5091                 return true;
5092         case NL80211_CMD_CONNECT:
5093                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5094                     !wiphy_ext_feature_isset(&rdev->wiphy,
5095                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5096                     auth_type == NL80211_AUTHTYPE_SAE)
5097                         return false;
5098
5099                 /* FILS with SK PFS or PK not supported yet */
5100                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5101                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5102                         return false;
5103                 if (!wiphy_ext_feature_isset(
5104                             &rdev->wiphy,
5105                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5106                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5107                         return false;
5108                 return true;
5109         case NL80211_CMD_START_AP:
5110                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5111                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5112                     auth_type == NL80211_AUTHTYPE_SAE)
5113                         return false;
5114                 /* FILS not supported yet */
5115                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5116                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5117                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5118                         return false;
5119                 return true;
5120         default:
5121                 return false;
5122         }
5123 }
5124
5125 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5126 {
5127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5128         struct net_device *dev = info->user_ptr[1];
5129         struct wireless_dev *wdev = dev->ieee80211_ptr;
5130         struct cfg80211_ap_settings params;
5131         int err;
5132
5133         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5134             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5135                 return -EOPNOTSUPP;
5136
5137         if (!rdev->ops->start_ap)
5138                 return -EOPNOTSUPP;
5139
5140         if (wdev->beacon_interval)
5141                 return -EALREADY;
5142
5143         memset(&params, 0, sizeof(params));
5144
5145         /* these are required for START_AP */
5146         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5147             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5148             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5149                 return -EINVAL;
5150
5151         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5152         if (err)
5153                 return err;
5154
5155         params.beacon_interval =
5156                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5157         params.dtim_period =
5158                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5159
5160         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5161                                            params.beacon_interval);
5162         if (err)
5163                 return err;
5164
5165         /*
5166          * In theory, some of these attributes should be required here
5167          * but since they were not used when the command was originally
5168          * added, keep them optional for old user space programs to let
5169          * them continue to work with drivers that do not need the
5170          * additional information -- drivers must check!
5171          */
5172         if (info->attrs[NL80211_ATTR_SSID]) {
5173                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5174                 params.ssid_len =
5175                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5176                 if (params.ssid_len == 0)
5177                         return -EINVAL;
5178         }
5179
5180         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5181                 params.hidden_ssid = nla_get_u32(
5182                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5183
5184         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5185
5186         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5187                 params.auth_type = nla_get_u32(
5188                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5189                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5190                                              NL80211_CMD_START_AP))
5191                         return -EINVAL;
5192         } else
5193                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5194
5195         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5196                                       NL80211_MAX_NR_CIPHER_SUITES);
5197         if (err)
5198                 return err;
5199
5200         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5201                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5202                         return -EOPNOTSUPP;
5203                 params.inactivity_timeout = nla_get_u16(
5204                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5205         }
5206
5207         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5208                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5209                         return -EINVAL;
5210                 params.p2p_ctwindow =
5211                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5212                 if (params.p2p_ctwindow != 0 &&
5213                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5214                         return -EINVAL;
5215         }
5216
5217         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5218                 u8 tmp;
5219
5220                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5221                         return -EINVAL;
5222                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5223                 params.p2p_opp_ps = tmp;
5224                 if (params.p2p_opp_ps != 0 &&
5225                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5226                         return -EINVAL;
5227         }
5228
5229         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5230                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5231                 if (err)
5232                         return err;
5233         } else if (wdev->preset_chandef.chan) {
5234                 params.chandef = wdev->preset_chandef;
5235         } else if (!nl80211_get_ap_channel(rdev, &params))
5236                 return -EINVAL;
5237
5238         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5239                                            wdev->iftype))
5240                 return -EINVAL;
5241
5242         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5243                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5244                                                     NL80211_ATTR_TX_RATES,
5245                                                     &params.beacon_rate,
5246                                                     dev);
5247                 if (err)
5248                         return err;
5249
5250                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5251                                               &params.beacon_rate);
5252                 if (err)
5253                         return err;
5254         }
5255
5256         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5257                 params.smps_mode =
5258                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5259                 switch (params.smps_mode) {
5260                 case NL80211_SMPS_OFF:
5261                         break;
5262                 case NL80211_SMPS_STATIC:
5263                         if (!(rdev->wiphy.features &
5264                               NL80211_FEATURE_STATIC_SMPS))
5265                                 return -EINVAL;
5266                         break;
5267                 case NL80211_SMPS_DYNAMIC:
5268                         if (!(rdev->wiphy.features &
5269                               NL80211_FEATURE_DYNAMIC_SMPS))
5270                                 return -EINVAL;
5271                         break;
5272                 default:
5273                         return -EINVAL;
5274                 }
5275         } else {
5276                 params.smps_mode = NL80211_SMPS_OFF;
5277         }
5278
5279         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5280         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5281                 return -EOPNOTSUPP;
5282
5283         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5284                 params.acl = parse_acl_data(&rdev->wiphy, info);
5285                 if (IS_ERR(params.acl))
5286                         return PTR_ERR(params.acl);
5287         }
5288
5289         params.twt_responder =
5290                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5291
5292         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5293                 err = nl80211_parse_he_obss_pd(
5294                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5295                                         &params.he_obss_pd);
5296                 if (err)
5297                         goto out;
5298         }
5299
5300         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5301                 err = nl80211_parse_he_bss_color(
5302                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5303                                         &params.he_bss_color);
5304                 if (err)
5305                         goto out;
5306         }
5307
5308         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5309                 err = nl80211_parse_fils_discovery(rdev,
5310                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5311                                                    &params);
5312                 if (err)
5313                         goto out;
5314         }
5315
5316         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5317                 err = nl80211_parse_unsol_bcast_probe_resp(
5318                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5319                         &params);
5320                 if (err)
5321                         return err;
5322         }
5323
5324         nl80211_calculate_ap_params(&params);
5325
5326         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5327                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5328
5329         wdev_lock(wdev);
5330         err = rdev_start_ap(rdev, dev, &params);
5331         if (!err) {
5332                 wdev->preset_chandef = params.chandef;
5333                 wdev->beacon_interval = params.beacon_interval;
5334                 wdev->chandef = params.chandef;
5335                 wdev->ssid_len = params.ssid_len;
5336                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5337
5338                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5339                         wdev->conn_owner_nlportid = info->snd_portid;
5340         }
5341         wdev_unlock(wdev);
5342
5343 out:
5344         kfree(params.acl);
5345
5346         return err;
5347 }
5348
5349 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5350 {
5351         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5352         struct net_device *dev = info->user_ptr[1];
5353         struct wireless_dev *wdev = dev->ieee80211_ptr;
5354         struct cfg80211_beacon_data params;
5355         int err;
5356
5357         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5358             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5359                 return -EOPNOTSUPP;
5360
5361         if (!rdev->ops->change_beacon)
5362                 return -EOPNOTSUPP;
5363
5364         if (!wdev->beacon_interval)
5365                 return -EINVAL;
5366
5367         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5368         if (err)
5369                 return err;
5370
5371         wdev_lock(wdev);
5372         err = rdev_change_beacon(rdev, dev, &params);
5373         wdev_unlock(wdev);
5374
5375         return err;
5376 }
5377
5378 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5379 {
5380         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5381         struct net_device *dev = info->user_ptr[1];
5382
5383         return cfg80211_stop_ap(rdev, dev, false);
5384 }
5385
5386 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5387         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5388         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5389         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5390         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5391         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5392         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5393 };
5394
5395 static int parse_station_flags(struct genl_info *info,
5396                                enum nl80211_iftype iftype,
5397                                struct station_parameters *params)
5398 {
5399         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5400         struct nlattr *nla;
5401         int flag;
5402
5403         /*
5404          * Try parsing the new attribute first so userspace
5405          * can specify both for older kernels.
5406          */
5407         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5408         if (nla) {
5409                 struct nl80211_sta_flag_update *sta_flags;
5410
5411                 sta_flags = nla_data(nla);
5412                 params->sta_flags_mask = sta_flags->mask;
5413                 params->sta_flags_set = sta_flags->set;
5414                 params->sta_flags_set &= params->sta_flags_mask;
5415                 if ((params->sta_flags_mask |
5416                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5417                         return -EINVAL;
5418                 return 0;
5419         }
5420
5421         /* if present, parse the old attribute */
5422
5423         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5424         if (!nla)
5425                 return 0;
5426
5427         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5428                 return -EINVAL;
5429
5430         /*
5431          * Only allow certain flags for interface types so that
5432          * other attributes are silently ignored. Remember that
5433          * this is backward compatibility code with old userspace
5434          * and shouldn't be hit in other cases anyway.
5435          */
5436         switch (iftype) {
5437         case NL80211_IFTYPE_AP:
5438         case NL80211_IFTYPE_AP_VLAN:
5439         case NL80211_IFTYPE_P2P_GO:
5440                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5441                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5442                                          BIT(NL80211_STA_FLAG_WME) |
5443                                          BIT(NL80211_STA_FLAG_MFP);
5444                 break;
5445         case NL80211_IFTYPE_P2P_CLIENT:
5446         case NL80211_IFTYPE_STATION:
5447                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5448                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5449                 break;
5450         case NL80211_IFTYPE_MESH_POINT:
5451                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5452                                          BIT(NL80211_STA_FLAG_MFP) |
5453                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5454                 break;
5455         default:
5456                 return -EINVAL;
5457         }
5458
5459         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5460                 if (flags[flag]) {
5461                         params->sta_flags_set |= (1<<flag);
5462
5463                         /* no longer support new API additions in old API */
5464                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5465                                 return -EINVAL;
5466                 }
5467         }
5468
5469         return 0;
5470 }
5471
5472 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5473 {
5474         struct nlattr *rate;
5475         u32 bitrate;
5476         u16 bitrate_compat;
5477         enum nl80211_rate_info rate_flg;
5478
5479         rate = nla_nest_start_noflag(msg, attr);
5480         if (!rate)
5481                 return false;
5482
5483         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5484         bitrate = cfg80211_calculate_bitrate(info);
5485         /* report 16-bit bitrate only if we can */
5486         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5487         if (bitrate > 0 &&
5488             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5489                 return false;
5490         if (bitrate_compat > 0 &&
5491             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5492                 return false;
5493
5494         switch (info->bw) {
5495         case RATE_INFO_BW_5:
5496                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5497                 break;
5498         case RATE_INFO_BW_10:
5499                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5500                 break;
5501         default:
5502                 WARN_ON(1);
5503                 fallthrough;
5504         case RATE_INFO_BW_20:
5505                 rate_flg = 0;
5506                 break;
5507         case RATE_INFO_BW_40:
5508                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5509                 break;
5510         case RATE_INFO_BW_80:
5511                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5512                 break;
5513         case RATE_INFO_BW_160:
5514                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5515                 break;
5516         case RATE_INFO_BW_HE_RU:
5517                 rate_flg = 0;
5518                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5519         }
5520
5521         if (rate_flg && nla_put_flag(msg, rate_flg))
5522                 return false;
5523
5524         if (info->flags & RATE_INFO_FLAGS_MCS) {
5525                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5526                         return false;
5527                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5528                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5529                         return false;
5530         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5531                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5532                         return false;
5533                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5534                         return false;
5535                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5536                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5537                         return false;
5538         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5539                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5540                         return false;
5541                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5542                         return false;
5543                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5544                         return false;
5545                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5546                         return false;
5547                 if (info->bw == RATE_INFO_BW_HE_RU &&
5548                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5549                                info->he_ru_alloc))
5550                         return false;
5551         }
5552
5553         nla_nest_end(msg, rate);
5554         return true;
5555 }
5556
5557 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5558                                int id)
5559 {
5560         void *attr;
5561         int i = 0;
5562
5563         if (!mask)
5564                 return true;
5565
5566         attr = nla_nest_start_noflag(msg, id);
5567         if (!attr)
5568                 return false;
5569
5570         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5571                 if (!(mask & BIT(i)))
5572                         continue;
5573
5574                 if (nla_put_u8(msg, i, signal[i]))
5575                         return false;
5576         }
5577
5578         nla_nest_end(msg, attr);
5579
5580         return true;
5581 }
5582
5583 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5584                                 u32 seq, int flags,
5585                                 struct cfg80211_registered_device *rdev,
5586                                 struct net_device *dev,
5587                                 const u8 *mac_addr, struct station_info *sinfo)
5588 {
5589         void *hdr;
5590         struct nlattr *sinfoattr, *bss_param;
5591
5592         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5593         if (!hdr) {
5594                 cfg80211_sinfo_release_content(sinfo);
5595                 return -1;
5596         }
5597
5598         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5599             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5600             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5601                 goto nla_put_failure;
5602
5603         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5604         if (!sinfoattr)
5605                 goto nla_put_failure;
5606
5607 #define PUT_SINFO(attr, memb, type) do {                                \
5608         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5609         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5610             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5611                              sinfo->memb))                              \
5612                 goto nla_put_failure;                                   \
5613         } while (0)
5614 #define PUT_SINFO_U64(attr, memb) do {                                  \
5615         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5616             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5617                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5618                 goto nla_put_failure;                                   \
5619         } while (0)
5620
5621         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5622         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5623         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5624
5625         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5626                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5627             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5628                         (u32)sinfo->rx_bytes))
5629                 goto nla_put_failure;
5630
5631         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5632                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5633             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5634                         (u32)sinfo->tx_bytes))
5635                 goto nla_put_failure;
5636
5637         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5638         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5639         PUT_SINFO(LLID, llid, u16);
5640         PUT_SINFO(PLID, plid, u16);
5641         PUT_SINFO(PLINK_STATE, plink_state, u8);
5642         PUT_SINFO_U64(RX_DURATION, rx_duration);
5643         PUT_SINFO_U64(TX_DURATION, tx_duration);
5644
5645         if (wiphy_ext_feature_isset(&rdev->wiphy,
5646                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5647                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5648
5649         switch (rdev->wiphy.signal_type) {
5650         case CFG80211_SIGNAL_TYPE_MBM:
5651                 PUT_SINFO(SIGNAL, signal, u8);
5652                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5653                 break;
5654         default:
5655                 break;
5656         }
5657         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5658                 if (!nl80211_put_signal(msg, sinfo->chains,
5659                                         sinfo->chain_signal,
5660                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5661                         goto nla_put_failure;
5662         }
5663         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5664                 if (!nl80211_put_signal(msg, sinfo->chains,
5665                                         sinfo->chain_signal_avg,
5666                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5667                         goto nla_put_failure;
5668         }
5669         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5670                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5671                                           NL80211_STA_INFO_TX_BITRATE))
5672                         goto nla_put_failure;
5673         }
5674         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5675                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5676                                           NL80211_STA_INFO_RX_BITRATE))
5677                         goto nla_put_failure;
5678         }
5679
5680         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5681         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5682         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5683         PUT_SINFO(TX_FAILED, tx_failed, u32);
5684         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5685         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5686         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5687         PUT_SINFO(LOCAL_PM, local_pm, u32);
5688         PUT_SINFO(PEER_PM, peer_pm, u32);
5689         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5690         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5691         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5692
5693         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5694                 bss_param = nla_nest_start_noflag(msg,
5695                                                   NL80211_STA_INFO_BSS_PARAM);
5696                 if (!bss_param)
5697                         goto nla_put_failure;
5698
5699                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5700                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5701                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5702                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5703                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5704                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5705                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5706                                sinfo->bss_param.dtim_period) ||
5707                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5708                                 sinfo->bss_param.beacon_interval))
5709                         goto nla_put_failure;
5710
5711                 nla_nest_end(msg, bss_param);
5712         }
5713         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5714             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5715                     sizeof(struct nl80211_sta_flag_update),
5716                     &sinfo->sta_flags))
5717                 goto nla_put_failure;
5718
5719         PUT_SINFO_U64(T_OFFSET, t_offset);
5720         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5721         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5722         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5723         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5724         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5725         if (wiphy_ext_feature_isset(&rdev->wiphy,
5726                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5727                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5728                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5729         }
5730
5731 #undef PUT_SINFO
5732 #undef PUT_SINFO_U64
5733
5734         if (sinfo->pertid) {
5735                 struct nlattr *tidsattr;
5736                 int tid;
5737
5738                 tidsattr = nla_nest_start_noflag(msg,
5739                                                  NL80211_STA_INFO_TID_STATS);
5740                 if (!tidsattr)
5741                         goto nla_put_failure;
5742
5743                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5744                         struct cfg80211_tid_stats *tidstats;
5745                         struct nlattr *tidattr;
5746
5747                         tidstats = &sinfo->pertid[tid];
5748
5749                         if (!tidstats->filled)
5750                                 continue;
5751
5752                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5753                         if (!tidattr)
5754                                 goto nla_put_failure;
5755
5756 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5757         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5758             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5759                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5760                 goto nla_put_failure;                                   \
5761         } while (0)
5762
5763                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5764                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5765                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5766                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5767
5768 #undef PUT_TIDVAL_U64
5769                         if ((tidstats->filled &
5770                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5771                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5772                                                    NL80211_TID_STATS_TXQ_STATS))
5773                                 goto nla_put_failure;
5774
5775                         nla_nest_end(msg, tidattr);
5776                 }
5777
5778                 nla_nest_end(msg, tidsattr);
5779         }
5780
5781         nla_nest_end(msg, sinfoattr);
5782
5783         if (sinfo->assoc_req_ies_len &&
5784             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5785                     sinfo->assoc_req_ies))
5786                 goto nla_put_failure;
5787
5788         cfg80211_sinfo_release_content(sinfo);
5789         genlmsg_end(msg, hdr);
5790         return 0;
5791
5792  nla_put_failure:
5793         cfg80211_sinfo_release_content(sinfo);
5794         genlmsg_cancel(msg, hdr);
5795         return -EMSGSIZE;
5796 }
5797
5798 static int nl80211_dump_station(struct sk_buff *skb,
5799                                 struct netlink_callback *cb)
5800 {
5801         struct station_info sinfo;
5802         struct cfg80211_registered_device *rdev;
5803         struct wireless_dev *wdev;
5804         u8 mac_addr[ETH_ALEN];
5805         int sta_idx = cb->args[2];
5806         int err;
5807
5808         rtnl_lock();
5809         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5810         if (err)
5811                 goto out_err;
5812
5813         if (!wdev->netdev) {
5814                 err = -EINVAL;
5815                 goto out_err;
5816         }
5817
5818         if (!rdev->ops->dump_station) {
5819                 err = -EOPNOTSUPP;
5820                 goto out_err;
5821         }
5822
5823         while (1) {
5824                 memset(&sinfo, 0, sizeof(sinfo));
5825                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5826                                         mac_addr, &sinfo);
5827                 if (err == -ENOENT)
5828                         break;
5829                 if (err)
5830                         goto out_err;
5831
5832                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5833                                 NETLINK_CB(cb->skb).portid,
5834                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5835                                 rdev, wdev->netdev, mac_addr,
5836                                 &sinfo) < 0)
5837                         goto out;
5838
5839                 sta_idx++;
5840         }
5841
5842  out:
5843         cb->args[2] = sta_idx;
5844         err = skb->len;
5845  out_err:
5846         rtnl_unlock();
5847
5848         return err;
5849 }
5850
5851 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5852 {
5853         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5854         struct net_device *dev = info->user_ptr[1];
5855         struct station_info sinfo;
5856         struct sk_buff *msg;
5857         u8 *mac_addr = NULL;
5858         int err;
5859
5860         memset(&sinfo, 0, sizeof(sinfo));
5861
5862         if (!info->attrs[NL80211_ATTR_MAC])
5863                 return -EINVAL;
5864
5865         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5866
5867         if (!rdev->ops->get_station)
5868                 return -EOPNOTSUPP;
5869
5870         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5871         if (err)
5872                 return err;
5873
5874         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5875         if (!msg) {
5876                 cfg80211_sinfo_release_content(&sinfo);
5877                 return -ENOMEM;
5878         }
5879
5880         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5881                                  info->snd_portid, info->snd_seq, 0,
5882                                  rdev, dev, mac_addr, &sinfo) < 0) {
5883                 nlmsg_free(msg);
5884                 return -ENOBUFS;
5885         }
5886
5887         return genlmsg_reply(msg, info);
5888 }
5889
5890 int cfg80211_check_station_change(struct wiphy *wiphy,
5891                                   struct station_parameters *params,
5892                                   enum cfg80211_station_type statype)
5893 {
5894         if (params->listen_interval != -1 &&
5895             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5896                 return -EINVAL;
5897
5898         if (params->support_p2p_ps != -1 &&
5899             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5900                 return -EINVAL;
5901
5902         if (params->aid &&
5903             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5904             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5905                 return -EINVAL;
5906
5907         /* When you run into this, adjust the code below for the new flag */
5908         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5909
5910         switch (statype) {
5911         case CFG80211_STA_MESH_PEER_KERNEL:
5912         case CFG80211_STA_MESH_PEER_USER:
5913                 /*
5914                  * No ignoring the TDLS flag here -- the userspace mesh
5915                  * code doesn't have the bug of including TDLS in the
5916                  * mask everywhere.
5917                  */
5918                 if (params->sta_flags_mask &
5919                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5920                                   BIT(NL80211_STA_FLAG_MFP) |
5921                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5922                         return -EINVAL;
5923                 break;
5924         case CFG80211_STA_TDLS_PEER_SETUP:
5925         case CFG80211_STA_TDLS_PEER_ACTIVE:
5926                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5927                         return -EINVAL;
5928                 /* ignore since it can't change */
5929                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5930                 break;
5931         default:
5932                 /* disallow mesh-specific things */
5933                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5934                         return -EINVAL;
5935                 if (params->local_pm)
5936                         return -EINVAL;
5937                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5938                         return -EINVAL;
5939         }
5940
5941         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5942             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5943                 /* TDLS can't be set, ... */
5944                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5945                         return -EINVAL;
5946                 /*
5947                  * ... but don't bother the driver with it. This works around
5948                  * a hostapd/wpa_supplicant issue -- it always includes the
5949                  * TLDS_PEER flag in the mask even for AP mode.
5950                  */
5951                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5952         }
5953
5954         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5955             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5956                 /* reject other things that can't change */
5957                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5958                         return -EINVAL;
5959                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5960                         return -EINVAL;
5961                 if (params->supported_rates)
5962                         return -EINVAL;
5963                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5964                     params->he_capa)
5965                         return -EINVAL;
5966         }
5967
5968         if (statype != CFG80211_STA_AP_CLIENT &&
5969             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5970                 if (params->vlan)
5971                         return -EINVAL;
5972         }
5973
5974         switch (statype) {
5975         case CFG80211_STA_AP_MLME_CLIENT:
5976                 /* Use this only for authorizing/unauthorizing a station */
5977                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5978                         return -EOPNOTSUPP;
5979                 break;
5980         case CFG80211_STA_AP_CLIENT:
5981         case CFG80211_STA_AP_CLIENT_UNASSOC:
5982                 /* accept only the listed bits */
5983                 if (params->sta_flags_mask &
5984                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5985                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5986                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5987                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5988                                   BIT(NL80211_STA_FLAG_WME) |
5989                                   BIT(NL80211_STA_FLAG_MFP)))
5990                         return -EINVAL;
5991
5992                 /* but authenticated/associated only if driver handles it */
5993                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5994                     params->sta_flags_mask &
5995                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5996                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5997                         return -EINVAL;
5998                 break;
5999         case CFG80211_STA_IBSS:
6000         case CFG80211_STA_AP_STA:
6001                 /* reject any changes other than AUTHORIZED */
6002                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6003                         return -EINVAL;
6004                 break;
6005         case CFG80211_STA_TDLS_PEER_SETUP:
6006                 /* reject any changes other than AUTHORIZED or WME */
6007                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6008                                                BIT(NL80211_STA_FLAG_WME)))
6009                         return -EINVAL;
6010                 /* force (at least) rates when authorizing */
6011                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6012                     !params->supported_rates)
6013                         return -EINVAL;
6014                 break;
6015         case CFG80211_STA_TDLS_PEER_ACTIVE:
6016                 /* reject any changes */
6017                 return -EINVAL;
6018         case CFG80211_STA_MESH_PEER_KERNEL:
6019                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6020                         return -EINVAL;
6021                 break;
6022         case CFG80211_STA_MESH_PEER_USER:
6023                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6024                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6025                         return -EINVAL;
6026                 break;
6027         }
6028
6029         /*
6030          * Older kernel versions ignored this attribute entirely, so don't
6031          * reject attempts to update it but mark it as unused instead so the
6032          * driver won't look at the data.
6033          */
6034         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6035             statype != CFG80211_STA_TDLS_PEER_SETUP)
6036                 params->opmode_notif_used = false;
6037
6038         return 0;
6039 }
6040 EXPORT_SYMBOL(cfg80211_check_station_change);
6041
6042 /*
6043  * Get vlan interface making sure it is running and on the right wiphy.
6044  */
6045 static struct net_device *get_vlan(struct genl_info *info,
6046                                    struct cfg80211_registered_device *rdev)
6047 {
6048         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6049         struct net_device *v;
6050         int ret;
6051
6052         if (!vlanattr)
6053                 return NULL;
6054
6055         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6056         if (!v)
6057                 return ERR_PTR(-ENODEV);
6058
6059         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6060                 ret = -EINVAL;
6061                 goto error;
6062         }
6063
6064         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6065             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6066             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6067                 ret = -EINVAL;
6068                 goto error;
6069         }
6070
6071         if (!netif_running(v)) {
6072                 ret = -ENETDOWN;
6073                 goto error;
6074         }
6075
6076         return v;
6077  error:
6078         dev_put(v);
6079         return ERR_PTR(ret);
6080 }
6081
6082 static const struct nla_policy
6083 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6084         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6085         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6086 };
6087
6088 static int nl80211_parse_sta_wme(struct genl_info *info,
6089                                  struct station_parameters *params)
6090 {
6091         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6092         struct nlattr *nla;
6093         int err;
6094
6095         /* parse WME attributes if present */
6096         if (!info->attrs[NL80211_ATTR_STA_WME])
6097                 return 0;
6098
6099         nla = info->attrs[NL80211_ATTR_STA_WME];
6100         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6101                                           nl80211_sta_wme_policy,
6102                                           info->extack);
6103         if (err)
6104                 return err;
6105
6106         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6107                 params->uapsd_queues = nla_get_u8(
6108                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6109         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6110                 return -EINVAL;
6111
6112         if (tb[NL80211_STA_WME_MAX_SP])
6113                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6114
6115         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6116                 return -EINVAL;
6117
6118         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6119
6120         return 0;
6121 }
6122
6123 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6124                                       struct station_parameters *params)
6125 {
6126         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6127                 params->supported_channels =
6128                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6129                 params->supported_channels_len =
6130                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6131                 /*
6132                  * Need to include at least one (first channel, number of
6133                  * channels) tuple for each subband (checked in policy),
6134                  * and must have proper tuples for the rest of the data as well.
6135                  */
6136                 if (params->supported_channels_len % 2)
6137                         return -EINVAL;
6138         }
6139
6140         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6141                 params->supported_oper_classes =
6142                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6143                 params->supported_oper_classes_len =
6144                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6145         }
6146         return 0;
6147 }
6148
6149 static int nl80211_set_station_tdls(struct genl_info *info,
6150                                     struct station_parameters *params)
6151 {
6152         int err;
6153         /* Dummy STA entry gets updated once the peer capabilities are known */
6154         if (info->attrs[NL80211_ATTR_PEER_AID])
6155                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6156         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6157                 params->ht_capa =
6158                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6159         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6160                 params->vht_capa =
6161                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6162         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6163                 params->he_capa =
6164                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6165                 params->he_capa_len =
6166                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6167         }
6168
6169         err = nl80211_parse_sta_channel_info(info, params);
6170         if (err)
6171                 return err;
6172
6173         return nl80211_parse_sta_wme(info, params);
6174 }
6175
6176 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6177                                              struct station_parameters *params)
6178 {
6179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6180         int idx;
6181
6182         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6183                 if (!rdev->ops->set_tx_power ||
6184                     !wiphy_ext_feature_isset(&rdev->wiphy,
6185                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6186                         return -EOPNOTSUPP;
6187
6188                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6189                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6190
6191                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6192                         idx = NL80211_ATTR_STA_TX_POWER;
6193
6194                         if (info->attrs[idx])
6195                                 params->txpwr.power =
6196                                         nla_get_s16(info->attrs[idx]);
6197                         else
6198                                 return -EINVAL;
6199                 }
6200                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6201         }
6202
6203         return 0;
6204 }
6205
6206 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6207 {
6208         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6209         struct net_device *dev = info->user_ptr[1];
6210         struct station_parameters params;
6211         u8 *mac_addr;
6212         int err;
6213
6214         memset(&params, 0, sizeof(params));
6215
6216         if (!rdev->ops->change_station)
6217                 return -EOPNOTSUPP;
6218
6219         /*
6220          * AID and listen_interval properties can be set only for unassociated
6221          * station. Include these parameters here and will check them in
6222          * cfg80211_check_station_change().
6223          */
6224         if (info->attrs[NL80211_ATTR_STA_AID])
6225                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6226
6227         if (info->attrs[NL80211_ATTR_VLAN_ID])
6228                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6229
6230         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6231                 params.listen_interval =
6232                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6233         else
6234                 params.listen_interval = -1;
6235
6236         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6237                 params.support_p2p_ps =
6238                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6239         else
6240                 params.support_p2p_ps = -1;
6241
6242         if (!info->attrs[NL80211_ATTR_MAC])
6243                 return -EINVAL;
6244
6245         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6246
6247         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6248                 params.supported_rates =
6249                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6250                 params.supported_rates_len =
6251                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6252         }
6253
6254         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6255                 params.capability =
6256                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6257                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6258         }
6259
6260         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6261                 params.ext_capab =
6262                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6263                 params.ext_capab_len =
6264                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6265         }
6266
6267         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6268                 return -EINVAL;
6269
6270         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6271                 params.plink_action =
6272                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6273
6274         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6275                 params.plink_state =
6276                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6277                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6278                         params.peer_aid = nla_get_u16(
6279                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6280                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6281         }
6282
6283         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6284                 params.local_pm = nla_get_u32(
6285                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6286
6287         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6288                 params.opmode_notif_used = true;
6289                 params.opmode_notif =
6290                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6291         }
6292
6293         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6294                 params.he_6ghz_capa =
6295                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6296
6297         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6298                 params.airtime_weight =
6299                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6300
6301         if (params.airtime_weight &&
6302             !wiphy_ext_feature_isset(&rdev->wiphy,
6303                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6304                 return -EOPNOTSUPP;
6305
6306         err = nl80211_parse_sta_txpower_setting(info, &params);
6307         if (err)
6308                 return err;
6309
6310         /* Include parameters for TDLS peer (will check later) */
6311         err = nl80211_set_station_tdls(info, &params);
6312         if (err)
6313                 return err;
6314
6315         params.vlan = get_vlan(info, rdev);
6316         if (IS_ERR(params.vlan))
6317                 return PTR_ERR(params.vlan);
6318
6319         switch (dev->ieee80211_ptr->iftype) {
6320         case NL80211_IFTYPE_AP:
6321         case NL80211_IFTYPE_AP_VLAN:
6322         case NL80211_IFTYPE_P2P_GO:
6323         case NL80211_IFTYPE_P2P_CLIENT:
6324         case NL80211_IFTYPE_STATION:
6325         case NL80211_IFTYPE_ADHOC:
6326         case NL80211_IFTYPE_MESH_POINT:
6327                 break;
6328         default:
6329                 err = -EOPNOTSUPP;
6330                 goto out_put_vlan;
6331         }
6332
6333         /* driver will call cfg80211_check_station_change() */
6334         err = rdev_change_station(rdev, dev, mac_addr, &params);
6335
6336  out_put_vlan:
6337         if (params.vlan)
6338                 dev_put(params.vlan);
6339
6340         return err;
6341 }
6342
6343 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6344 {
6345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6346         int err;
6347         struct net_device *dev = info->user_ptr[1];
6348         struct station_parameters params;
6349         u8 *mac_addr = NULL;
6350         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6351                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6352
6353         memset(&params, 0, sizeof(params));
6354
6355         if (!rdev->ops->add_station)
6356                 return -EOPNOTSUPP;
6357
6358         if (!info->attrs[NL80211_ATTR_MAC])
6359                 return -EINVAL;
6360
6361         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6362                 return -EINVAL;
6363
6364         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6365                 return -EINVAL;
6366
6367         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6368             !info->attrs[NL80211_ATTR_PEER_AID])
6369                 return -EINVAL;
6370
6371         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6372         params.supported_rates =
6373                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6374         params.supported_rates_len =
6375                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6376         params.listen_interval =
6377                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6378
6379         if (info->attrs[NL80211_ATTR_VLAN_ID])
6380                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6381
6382         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6383                 params.support_p2p_ps =
6384                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6385         } else {
6386                 /*
6387                  * if not specified, assume it's supported for P2P GO interface,
6388                  * and is NOT supported for AP interface
6389                  */
6390                 params.support_p2p_ps =
6391                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6392         }
6393
6394         if (info->attrs[NL80211_ATTR_PEER_AID])
6395                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6396         else
6397                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6398
6399         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6400                 params.capability =
6401                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6402                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6403         }
6404
6405         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6406                 params.ext_capab =
6407                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6408                 params.ext_capab_len =
6409                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6410         }
6411
6412         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6413                 params.ht_capa =
6414                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6415
6416         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6417                 params.vht_capa =
6418                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6419
6420         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6421                 params.he_capa =
6422                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6423                 params.he_capa_len =
6424                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6425         }
6426
6427         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6428                 params.he_6ghz_capa =
6429                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6430
6431         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6432                 params.opmode_notif_used = true;
6433                 params.opmode_notif =
6434                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6435         }
6436
6437         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6438                 params.plink_action =
6439                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6440
6441         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6442                 params.airtime_weight =
6443                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6444
6445         if (params.airtime_weight &&
6446             !wiphy_ext_feature_isset(&rdev->wiphy,
6447                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6448                 return -EOPNOTSUPP;
6449
6450         err = nl80211_parse_sta_txpower_setting(info, &params);
6451         if (err)
6452                 return err;
6453
6454         err = nl80211_parse_sta_channel_info(info, &params);
6455         if (err)
6456                 return err;
6457
6458         err = nl80211_parse_sta_wme(info, &params);
6459         if (err)
6460                 return err;
6461
6462         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6463                 return -EINVAL;
6464
6465         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6466          * as userspace might just pass through the capabilities from the IEs
6467          * directly, rather than enforcing this restriction and returning an
6468          * error in this case.
6469          */
6470         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6471                 params.ht_capa = NULL;
6472                 params.vht_capa = NULL;
6473
6474                 /* HE requires WME */
6475                 if (params.he_capa_len || params.he_6ghz_capa)
6476                         return -EINVAL;
6477         }
6478
6479         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6480         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6481                 return -EINVAL;
6482
6483         /* When you run into this, adjust the code below for the new flag */
6484         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6485
6486         switch (dev->ieee80211_ptr->iftype) {
6487         case NL80211_IFTYPE_AP:
6488         case NL80211_IFTYPE_AP_VLAN:
6489         case NL80211_IFTYPE_P2P_GO:
6490                 /* ignore WME attributes if iface/sta is not capable */
6491                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6492                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6493                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6494
6495                 /* TDLS peers cannot be added */
6496                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6497                     info->attrs[NL80211_ATTR_PEER_AID])
6498                         return -EINVAL;
6499                 /* but don't bother the driver with it */
6500                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6501
6502                 /* allow authenticated/associated only if driver handles it */
6503                 if (!(rdev->wiphy.features &
6504                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6505                     params.sta_flags_mask & auth_assoc)
6506                         return -EINVAL;
6507
6508                 /* Older userspace, or userspace wanting to be compatible with
6509                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6510                  * and assoc flags in the mask, but assumes the station will be
6511                  * added as associated anyway since this was the required driver
6512                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6513                  * introduced.
6514                  * In order to not bother drivers with this quirk in the API
6515                  * set the flags in both the mask and set for new stations in
6516                  * this case.
6517                  */
6518                 if (!(params.sta_flags_mask & auth_assoc)) {
6519                         params.sta_flags_mask |= auth_assoc;
6520                         params.sta_flags_set |= auth_assoc;
6521                 }
6522
6523                 /* must be last in here for error handling */
6524                 params.vlan = get_vlan(info, rdev);
6525                 if (IS_ERR(params.vlan))
6526                         return PTR_ERR(params.vlan);
6527                 break;
6528         case NL80211_IFTYPE_MESH_POINT:
6529                 /* ignore uAPSD data */
6530                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6531
6532                 /* associated is disallowed */
6533                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6534                         return -EINVAL;
6535                 /* TDLS peers cannot be added */
6536                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6537                     info->attrs[NL80211_ATTR_PEER_AID])
6538                         return -EINVAL;
6539                 break;
6540         case NL80211_IFTYPE_STATION:
6541         case NL80211_IFTYPE_P2P_CLIENT:
6542                 /* ignore uAPSD data */
6543                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6544
6545                 /* these are disallowed */
6546                 if (params.sta_flags_mask &
6547                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6548                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6549                         return -EINVAL;
6550                 /* Only TDLS peers can be added */
6551                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6552                         return -EINVAL;
6553                 /* Can only add if TDLS ... */
6554                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6555                         return -EOPNOTSUPP;
6556                 /* ... with external setup is supported */
6557                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6558                         return -EOPNOTSUPP;
6559                 /*
6560                  * Older wpa_supplicant versions always mark the TDLS peer
6561                  * as authorized, but it shouldn't yet be.
6562                  */
6563                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6564                 break;
6565         default:
6566                 return -EOPNOTSUPP;
6567         }
6568
6569         /* be aware of params.vlan when changing code here */
6570
6571         err = rdev_add_station(rdev, dev, mac_addr, &params);
6572
6573         if (params.vlan)
6574                 dev_put(params.vlan);
6575         return err;
6576 }
6577
6578 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6579 {
6580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6581         struct net_device *dev = info->user_ptr[1];
6582         struct station_del_parameters params;
6583
6584         memset(&params, 0, sizeof(params));
6585
6586         if (info->attrs[NL80211_ATTR_MAC])
6587                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6588
6589         switch (dev->ieee80211_ptr->iftype) {
6590         case NL80211_IFTYPE_AP:
6591         case NL80211_IFTYPE_AP_VLAN:
6592         case NL80211_IFTYPE_MESH_POINT:
6593         case NL80211_IFTYPE_P2P_GO:
6594                 /* always accept these */
6595                 break;
6596         case NL80211_IFTYPE_ADHOC:
6597                 /* conditionally accept */
6598                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6599                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6600                         break;
6601                 return -EINVAL;
6602         default:
6603                 return -EINVAL;
6604         }
6605
6606         if (!rdev->ops->del_station)
6607                 return -EOPNOTSUPP;
6608
6609         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6610                 params.subtype =
6611                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6612                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6613                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6614                         return -EINVAL;
6615         } else {
6616                 /* Default to Deauthentication frame */
6617                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6618         }
6619
6620         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6621                 params.reason_code =
6622                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6623                 if (params.reason_code == 0)
6624                         return -EINVAL; /* 0 is reserved */
6625         } else {
6626                 /* Default to reason code 2 */
6627                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6628         }
6629
6630         return rdev_del_station(rdev, dev, &params);
6631 }
6632
6633 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6634                                 int flags, struct net_device *dev,
6635                                 u8 *dst, u8 *next_hop,
6636                                 struct mpath_info *pinfo)
6637 {
6638         void *hdr;
6639         struct nlattr *pinfoattr;
6640
6641         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6642         if (!hdr)
6643                 return -1;
6644
6645         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6646             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6647             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6648             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6649                 goto nla_put_failure;
6650
6651         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6652         if (!pinfoattr)
6653                 goto nla_put_failure;
6654         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6655             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6656                         pinfo->frame_qlen))
6657                 goto nla_put_failure;
6658         if (((pinfo->filled & MPATH_INFO_SN) &&
6659              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6660             ((pinfo->filled & MPATH_INFO_METRIC) &&
6661              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6662                          pinfo->metric)) ||
6663             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6664              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6665                          pinfo->exptime)) ||
6666             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6667              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6668                         pinfo->flags)) ||
6669             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6670              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6671                          pinfo->discovery_timeout)) ||
6672             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6673              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6674                         pinfo->discovery_retries)) ||
6675             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6676              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6677                         pinfo->hop_count)) ||
6678             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6679              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6680                          pinfo->path_change_count)))
6681                 goto nla_put_failure;
6682
6683         nla_nest_end(msg, pinfoattr);
6684
6685         genlmsg_end(msg, hdr);
6686         return 0;
6687
6688  nla_put_failure:
6689         genlmsg_cancel(msg, hdr);
6690         return -EMSGSIZE;
6691 }
6692
6693 static int nl80211_dump_mpath(struct sk_buff *skb,
6694                               struct netlink_callback *cb)
6695 {
6696         struct mpath_info pinfo;
6697         struct cfg80211_registered_device *rdev;
6698         struct wireless_dev *wdev;
6699         u8 dst[ETH_ALEN];
6700         u8 next_hop[ETH_ALEN];
6701         int path_idx = cb->args[2];
6702         int err;
6703
6704         rtnl_lock();
6705         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6706         if (err)
6707                 goto out_err;
6708
6709         if (!rdev->ops->dump_mpath) {
6710                 err = -EOPNOTSUPP;
6711                 goto out_err;
6712         }
6713
6714         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6715                 err = -EOPNOTSUPP;
6716                 goto out_err;
6717         }
6718
6719         while (1) {
6720                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6721                                       next_hop, &pinfo);
6722                 if (err == -ENOENT)
6723                         break;
6724                 if (err)
6725                         goto out_err;
6726
6727                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6728                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6729                                        wdev->netdev, dst, next_hop,
6730                                        &pinfo) < 0)
6731                         goto out;
6732
6733                 path_idx++;
6734         }
6735
6736  out:
6737         cb->args[2] = path_idx;
6738         err = skb->len;
6739  out_err:
6740         rtnl_unlock();
6741         return err;
6742 }
6743
6744 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6745 {
6746         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6747         int err;
6748         struct net_device *dev = info->user_ptr[1];
6749         struct mpath_info pinfo;
6750         struct sk_buff *msg;
6751         u8 *dst = NULL;
6752         u8 next_hop[ETH_ALEN];
6753
6754         memset(&pinfo, 0, sizeof(pinfo));
6755
6756         if (!info->attrs[NL80211_ATTR_MAC])
6757                 return -EINVAL;
6758
6759         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6760
6761         if (!rdev->ops->get_mpath)
6762                 return -EOPNOTSUPP;
6763
6764         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6765                 return -EOPNOTSUPP;
6766
6767         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6768         if (err)
6769                 return err;
6770
6771         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6772         if (!msg)
6773                 return -ENOMEM;
6774
6775         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6776                                  dev, dst, next_hop, &pinfo) < 0) {
6777                 nlmsg_free(msg);
6778                 return -ENOBUFS;
6779         }
6780
6781         return genlmsg_reply(msg, info);
6782 }
6783
6784 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6785 {
6786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6787         struct net_device *dev = info->user_ptr[1];
6788         u8 *dst = NULL;
6789         u8 *next_hop = NULL;
6790
6791         if (!info->attrs[NL80211_ATTR_MAC])
6792                 return -EINVAL;
6793
6794         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6795                 return -EINVAL;
6796
6797         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6798         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6799
6800         if (!rdev->ops->change_mpath)
6801                 return -EOPNOTSUPP;
6802
6803         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6804                 return -EOPNOTSUPP;
6805
6806         return rdev_change_mpath(rdev, dev, dst, next_hop);
6807 }
6808
6809 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6810 {
6811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6812         struct net_device *dev = info->user_ptr[1];
6813         u8 *dst = NULL;
6814         u8 *next_hop = NULL;
6815
6816         if (!info->attrs[NL80211_ATTR_MAC])
6817                 return -EINVAL;
6818
6819         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6820                 return -EINVAL;
6821
6822         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6823         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6824
6825         if (!rdev->ops->add_mpath)
6826                 return -EOPNOTSUPP;
6827
6828         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6829                 return -EOPNOTSUPP;
6830
6831         return rdev_add_mpath(rdev, dev, dst, next_hop);
6832 }
6833
6834 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6835 {
6836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6837         struct net_device *dev = info->user_ptr[1];
6838         u8 *dst = NULL;
6839
6840         if (info->attrs[NL80211_ATTR_MAC])
6841                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6842
6843         if (!rdev->ops->del_mpath)
6844                 return -EOPNOTSUPP;
6845
6846         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6847                 return -EOPNOTSUPP;
6848
6849         return rdev_del_mpath(rdev, dev, dst);
6850 }
6851
6852 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6853 {
6854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6855         int err;
6856         struct net_device *dev = info->user_ptr[1];
6857         struct mpath_info pinfo;
6858         struct sk_buff *msg;
6859         u8 *dst = NULL;
6860         u8 mpp[ETH_ALEN];
6861
6862         memset(&pinfo, 0, sizeof(pinfo));
6863
6864         if (!info->attrs[NL80211_ATTR_MAC])
6865                 return -EINVAL;
6866
6867         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6868
6869         if (!rdev->ops->get_mpp)
6870                 return -EOPNOTSUPP;
6871
6872         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6873                 return -EOPNOTSUPP;
6874
6875         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6876         if (err)
6877                 return err;
6878
6879         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6880         if (!msg)
6881                 return -ENOMEM;
6882
6883         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6884                                dev, dst, mpp, &pinfo) < 0) {
6885                 nlmsg_free(msg);
6886                 return -ENOBUFS;
6887         }
6888
6889         return genlmsg_reply(msg, info);
6890 }
6891
6892 static int nl80211_dump_mpp(struct sk_buff *skb,
6893                             struct netlink_callback *cb)
6894 {
6895         struct mpath_info pinfo;
6896         struct cfg80211_registered_device *rdev;
6897         struct wireless_dev *wdev;
6898         u8 dst[ETH_ALEN];
6899         u8 mpp[ETH_ALEN];
6900         int path_idx = cb->args[2];
6901         int err;
6902
6903         rtnl_lock();
6904         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6905         if (err)
6906                 goto out_err;
6907
6908         if (!rdev->ops->dump_mpp) {
6909                 err = -EOPNOTSUPP;
6910                 goto out_err;
6911         }
6912
6913         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6914                 err = -EOPNOTSUPP;
6915                 goto out_err;
6916         }
6917
6918         while (1) {
6919                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6920                                     mpp, &pinfo);
6921                 if (err == -ENOENT)
6922                         break;
6923                 if (err)
6924                         goto out_err;
6925
6926                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6927                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6928                                        wdev->netdev, dst, mpp,
6929                                        &pinfo) < 0)
6930                         goto out;
6931
6932                 path_idx++;
6933         }
6934
6935  out:
6936         cb->args[2] = path_idx;
6937         err = skb->len;
6938  out_err:
6939         rtnl_unlock();
6940         return err;
6941 }
6942
6943 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6944 {
6945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6946         struct net_device *dev = info->user_ptr[1];
6947         struct wireless_dev *wdev = dev->ieee80211_ptr;
6948         struct bss_parameters params;
6949         int err;
6950
6951         memset(&params, 0, sizeof(params));
6952         /* default to not changing parameters */
6953         params.use_cts_prot = -1;
6954         params.use_short_preamble = -1;
6955         params.use_short_slot_time = -1;
6956         params.ap_isolate = -1;
6957         params.ht_opmode = -1;
6958         params.p2p_ctwindow = -1;
6959         params.p2p_opp_ps = -1;
6960
6961         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6962                 params.use_cts_prot =
6963                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6964         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6965                 params.use_short_preamble =
6966                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6967         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6968                 params.use_short_slot_time =
6969                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6970         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6971                 params.basic_rates =
6972                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6973                 params.basic_rates_len =
6974                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6975         }
6976         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6977                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6978         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6979                 params.ht_opmode =
6980                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6981
6982         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6983                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6984                         return -EINVAL;
6985                 params.p2p_ctwindow =
6986                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6987                 if (params.p2p_ctwindow != 0 &&
6988                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6989                         return -EINVAL;
6990         }
6991
6992         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6993                 u8 tmp;
6994
6995                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6996                         return -EINVAL;
6997                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6998                 params.p2p_opp_ps = tmp;
6999                 if (params.p2p_opp_ps &&
7000                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7001                         return -EINVAL;
7002         }
7003
7004         if (!rdev->ops->change_bss)
7005                 return -EOPNOTSUPP;
7006
7007         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7008             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7009                 return -EOPNOTSUPP;
7010
7011         wdev_lock(wdev);
7012         err = rdev_change_bss(rdev, dev, &params);
7013         wdev_unlock(wdev);
7014
7015         return err;
7016 }
7017
7018 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7019 {
7020         char *data = NULL;
7021         bool is_indoor;
7022         enum nl80211_user_reg_hint_type user_reg_hint_type;
7023         u32 owner_nlportid;
7024
7025         /*
7026          * You should only get this when cfg80211 hasn't yet initialized
7027          * completely when built-in to the kernel right between the time
7028          * window between nl80211_init() and regulatory_init(), if that is
7029          * even possible.
7030          */
7031         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7032                 return -EINPROGRESS;
7033
7034         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7035                 user_reg_hint_type =
7036                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7037         else
7038                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7039
7040         switch (user_reg_hint_type) {
7041         case NL80211_USER_REG_HINT_USER:
7042         case NL80211_USER_REG_HINT_CELL_BASE:
7043                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7044                         return -EINVAL;
7045
7046                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7047                 return regulatory_hint_user(data, user_reg_hint_type);
7048         case NL80211_USER_REG_HINT_INDOOR:
7049                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7050                         owner_nlportid = info->snd_portid;
7051                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7052                 } else {
7053                         owner_nlportid = 0;
7054                         is_indoor = true;
7055                 }
7056
7057                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7058         default:
7059                 return -EINVAL;
7060         }
7061 }
7062
7063 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7064 {
7065         return reg_reload_regdb();
7066 }
7067
7068 static int nl80211_get_mesh_config(struct sk_buff *skb,
7069                                    struct genl_info *info)
7070 {
7071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7072         struct net_device *dev = info->user_ptr[1];
7073         struct wireless_dev *wdev = dev->ieee80211_ptr;
7074         struct mesh_config cur_params;
7075         int err = 0;
7076         void *hdr;
7077         struct nlattr *pinfoattr;
7078         struct sk_buff *msg;
7079
7080         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7081                 return -EOPNOTSUPP;
7082
7083         if (!rdev->ops->get_mesh_config)
7084                 return -EOPNOTSUPP;
7085
7086         wdev_lock(wdev);
7087         /* If not connected, get default parameters */
7088         if (!wdev->mesh_id_len)
7089                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7090         else
7091                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7092         wdev_unlock(wdev);
7093
7094         if (err)
7095                 return err;
7096
7097         /* Draw up a netlink message to send back */
7098         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7099         if (!msg)
7100                 return -ENOMEM;
7101         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7102                              NL80211_CMD_GET_MESH_CONFIG);
7103         if (!hdr)
7104                 goto out;
7105         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7106         if (!pinfoattr)
7107                 goto nla_put_failure;
7108         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7109             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7110                         cur_params.dot11MeshRetryTimeout) ||
7111             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7112                         cur_params.dot11MeshConfirmTimeout) ||
7113             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7114                         cur_params.dot11MeshHoldingTimeout) ||
7115             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7116                         cur_params.dot11MeshMaxPeerLinks) ||
7117             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7118                        cur_params.dot11MeshMaxRetries) ||
7119             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7120                        cur_params.dot11MeshTTL) ||
7121             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7122                        cur_params.element_ttl) ||
7123             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7124                        cur_params.auto_open_plinks) ||
7125             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7126                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7127             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7128                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7129             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7130                         cur_params.path_refresh_time) ||
7131             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7132                         cur_params.min_discovery_timeout) ||
7133             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7134                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7135             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7136                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7137             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7138                         cur_params.dot11MeshHWMPperrMinInterval) ||
7139             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7140                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7141             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7142                        cur_params.dot11MeshHWMPRootMode) ||
7143             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7144                         cur_params.dot11MeshHWMPRannInterval) ||
7145             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7146                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7147             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7148                        cur_params.dot11MeshForwarding) ||
7149             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7150                         cur_params.rssi_threshold) ||
7151             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7152                         cur_params.ht_opmode) ||
7153             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7154                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7155             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7156                         cur_params.dot11MeshHWMProotInterval) ||
7157             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7158                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7159             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7160                         cur_params.power_mode) ||
7161             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7162                         cur_params.dot11MeshAwakeWindowDuration) ||
7163             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7164                         cur_params.plink_timeout) ||
7165             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7166                        cur_params.dot11MeshConnectedToMeshGate) ||
7167             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7168                        cur_params.dot11MeshNolearn) ||
7169             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7170                        cur_params.dot11MeshConnectedToAuthServer))
7171                 goto nla_put_failure;
7172         nla_nest_end(msg, pinfoattr);
7173         genlmsg_end(msg, hdr);
7174         return genlmsg_reply(msg, info);
7175
7176  nla_put_failure:
7177  out:
7178         nlmsg_free(msg);
7179         return -ENOBUFS;
7180 }
7181
7182 static const struct nla_policy
7183 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7184         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7185                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7186         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7187                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7188         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7189                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7190         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7191                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7192         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7193         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7194         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7195         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7196         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7197                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7198         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7199         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7200         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7201         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7202         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7203                 NLA_POLICY_MIN(NLA_U16, 1),
7204         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7205                 NLA_POLICY_MIN(NLA_U16, 1),
7206         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7207                 NLA_POLICY_MIN(NLA_U16, 1),
7208         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7209         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7210                 NLA_POLICY_MIN(NLA_U16, 1),
7211         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7212         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7213         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7214                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7215         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7216         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7217         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7218                 NLA_POLICY_MIN(NLA_U16, 1),
7219         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7220                 NLA_POLICY_MIN(NLA_U16, 1),
7221         [NL80211_MESHCONF_POWER_MODE] =
7222                 NLA_POLICY_RANGE(NLA_U32,
7223                                  NL80211_MESH_POWER_ACTIVE,
7224                                  NL80211_MESH_POWER_MAX),
7225         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7226         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7227         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7228         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7229         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7230 };
7231
7232 static const struct nla_policy
7233         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7234         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7235         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7236         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7237         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7238         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7239         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7240         [NL80211_MESH_SETUP_IE] =
7241                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7242                                        IEEE80211_MAX_DATA_LEN),
7243         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7244 };
7245
7246 static int nl80211_parse_mesh_config(struct genl_info *info,
7247                                      struct mesh_config *cfg,
7248                                      u32 *mask_out)
7249 {
7250         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7251         u32 mask = 0;
7252         u16 ht_opmode;
7253
7254 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7255 do {                                                                    \
7256         if (tb[attr]) {                                                 \
7257                 cfg->param = fn(tb[attr]);                              \
7258                 mask |= BIT((attr) - 1);                                \
7259         }                                                               \
7260 } while (0)
7261
7262         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7263                 return -EINVAL;
7264         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7265                 return -EINVAL;
7266
7267         /* This makes sure that there aren't more than 32 mesh config
7268          * parameters (otherwise our bitfield scheme would not work.) */
7269         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7270
7271         /* Fill in the params struct */
7272         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7273                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7274         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7275                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7276                                   nla_get_u16);
7277         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7278                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7279                                   nla_get_u16);
7280         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7281                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7282                                   nla_get_u16);
7283         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7284                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7285         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7286                                   NL80211_MESHCONF_TTL, nla_get_u8);
7287         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7288                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7289         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7290                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7291                                   nla_get_u8);
7292         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7293                                   mask,
7294                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7295                                   nla_get_u32);
7296         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7297                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7298                                   nla_get_u8);
7299         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7300                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7301                                   nla_get_u32);
7302         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7303             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7304                 return -EINVAL;
7305         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7306                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7307                                   nla_get_u16);
7308         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7309                                   mask,
7310                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7311                                   nla_get_u32);
7312         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7313             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7314              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7315                 return -EINVAL;
7316         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7317                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7318                                   nla_get_u16);
7319         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7320                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7321                                   nla_get_u16);
7322         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7323                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7324                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7325                                   nla_get_u16);
7326         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7327                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7328         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7329                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7330                                   nla_get_u16);
7331         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7332                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7333                                   nla_get_u8);
7334         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7335                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7336         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7337                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7338                                   nla_get_s32);
7339         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7340                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7341                                   nla_get_u8);
7342         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7343                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7344                                   nla_get_u8);
7345         /*
7346          * Check HT operation mode based on
7347          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7348          */
7349         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7350                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7351
7352                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7353                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7354                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7355                         return -EINVAL;
7356
7357                 /* NON_HT_STA bit is reserved, but some programs set it */
7358                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7359
7360                 cfg->ht_opmode = ht_opmode;
7361                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7362         }
7363         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7364                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7365                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7366                                   nla_get_u32);
7367         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7368             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7369              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7370                 return -EINVAL;
7371         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7372                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7373                                   nla_get_u16);
7374         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7375                                   mask,
7376                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7377                                   nla_get_u16);
7378         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7379                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7380         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7381                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7382         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7383                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7384         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7385                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7386         if (mask_out)
7387                 *mask_out = mask;
7388
7389         return 0;
7390
7391 #undef FILL_IN_MESH_PARAM_IF_SET
7392 }
7393
7394 static int nl80211_parse_mesh_setup(struct genl_info *info,
7395                                      struct mesh_setup *setup)
7396 {
7397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7398         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7399
7400         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7401                 return -EINVAL;
7402         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7403                 return -EINVAL;
7404
7405         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7406                 setup->sync_method =
7407                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7408                  IEEE80211_SYNC_METHOD_VENDOR :
7409                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7410
7411         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7412                 setup->path_sel_proto =
7413                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7414                  IEEE80211_PATH_PROTOCOL_VENDOR :
7415                  IEEE80211_PATH_PROTOCOL_HWMP;
7416
7417         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7418                 setup->path_metric =
7419                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7420                  IEEE80211_PATH_METRIC_VENDOR :
7421                  IEEE80211_PATH_METRIC_AIRTIME;
7422
7423         if (tb[NL80211_MESH_SETUP_IE]) {
7424                 struct nlattr *ieattr =
7425                         tb[NL80211_MESH_SETUP_IE];
7426                 setup->ie = nla_data(ieattr);
7427                 setup->ie_len = nla_len(ieattr);
7428         }
7429         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7430             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7431                 return -EINVAL;
7432         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7433         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7434         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7435         if (setup->is_secure)
7436                 setup->user_mpm = true;
7437
7438         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7439                 if (!setup->user_mpm)
7440                         return -EINVAL;
7441                 setup->auth_id =
7442                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7443         }
7444
7445         return 0;
7446 }
7447
7448 static int nl80211_update_mesh_config(struct sk_buff *skb,
7449                                       struct genl_info *info)
7450 {
7451         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7452         struct net_device *dev = info->user_ptr[1];
7453         struct wireless_dev *wdev = dev->ieee80211_ptr;
7454         struct mesh_config cfg;
7455         u32 mask;
7456         int err;
7457
7458         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7459                 return -EOPNOTSUPP;
7460
7461         if (!rdev->ops->update_mesh_config)
7462                 return -EOPNOTSUPP;
7463
7464         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7465         if (err)
7466                 return err;
7467
7468         wdev_lock(wdev);
7469         if (!wdev->mesh_id_len)
7470                 err = -ENOLINK;
7471
7472         if (!err)
7473                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7474
7475         wdev_unlock(wdev);
7476
7477         return err;
7478 }
7479
7480 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7481                               struct sk_buff *msg)
7482 {
7483         struct nlattr *nl_reg_rules;
7484         unsigned int i;
7485
7486         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7487             (regdom->dfs_region &&
7488              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7489                 goto nla_put_failure;
7490
7491         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7492         if (!nl_reg_rules)
7493                 goto nla_put_failure;
7494
7495         for (i = 0; i < regdom->n_reg_rules; i++) {
7496                 struct nlattr *nl_reg_rule;
7497                 const struct ieee80211_reg_rule *reg_rule;
7498                 const struct ieee80211_freq_range *freq_range;
7499                 const struct ieee80211_power_rule *power_rule;
7500                 unsigned int max_bandwidth_khz;
7501
7502                 reg_rule = &regdom->reg_rules[i];
7503                 freq_range = &reg_rule->freq_range;
7504                 power_rule = &reg_rule->power_rule;
7505
7506                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7507                 if (!nl_reg_rule)
7508                         goto nla_put_failure;
7509
7510                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7511                 if (!max_bandwidth_khz)
7512                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7513                                                                   reg_rule);
7514
7515                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7516                                 reg_rule->flags) ||
7517                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7518                                 freq_range->start_freq_khz) ||
7519                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7520                                 freq_range->end_freq_khz) ||
7521                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7522                                 max_bandwidth_khz) ||
7523                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7524                                 power_rule->max_antenna_gain) ||
7525                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7526                                 power_rule->max_eirp) ||
7527                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7528                                 reg_rule->dfs_cac_ms))
7529                         goto nla_put_failure;
7530
7531                 nla_nest_end(msg, nl_reg_rule);
7532         }
7533
7534         nla_nest_end(msg, nl_reg_rules);
7535         return 0;
7536
7537 nla_put_failure:
7538         return -EMSGSIZE;
7539 }
7540
7541 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7542 {
7543         const struct ieee80211_regdomain *regdom = NULL;
7544         struct cfg80211_registered_device *rdev;
7545         struct wiphy *wiphy = NULL;
7546         struct sk_buff *msg;
7547         void *hdr;
7548
7549         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7550         if (!msg)
7551                 return -ENOBUFS;
7552
7553         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7554                              NL80211_CMD_GET_REG);
7555         if (!hdr)
7556                 goto put_failure;
7557
7558         if (info->attrs[NL80211_ATTR_WIPHY]) {
7559                 bool self_managed;
7560
7561                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7562                 if (IS_ERR(rdev)) {
7563                         nlmsg_free(msg);
7564                         return PTR_ERR(rdev);
7565                 }
7566
7567                 wiphy = &rdev->wiphy;
7568                 self_managed = wiphy->regulatory_flags &
7569                                REGULATORY_WIPHY_SELF_MANAGED;
7570                 regdom = get_wiphy_regdom(wiphy);
7571
7572                 /* a self-managed-reg device must have a private regdom */
7573                 if (WARN_ON(!regdom && self_managed)) {
7574                         nlmsg_free(msg);
7575                         return -EINVAL;
7576                 }
7577
7578                 if (regdom &&
7579                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7580                         goto nla_put_failure;
7581         }
7582
7583         if (!wiphy && reg_last_request_cell_base() &&
7584             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7585                         NL80211_USER_REG_HINT_CELL_BASE))
7586                 goto nla_put_failure;
7587
7588         rcu_read_lock();
7589
7590         if (!regdom)
7591                 regdom = rcu_dereference(cfg80211_regdomain);
7592
7593         if (nl80211_put_regdom(regdom, msg))
7594                 goto nla_put_failure_rcu;
7595
7596         rcu_read_unlock();
7597
7598         genlmsg_end(msg, hdr);
7599         return genlmsg_reply(msg, info);
7600
7601 nla_put_failure_rcu:
7602         rcu_read_unlock();
7603 nla_put_failure:
7604 put_failure:
7605         nlmsg_free(msg);
7606         return -EMSGSIZE;
7607 }
7608
7609 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7610                                u32 seq, int flags, struct wiphy *wiphy,
7611                                const struct ieee80211_regdomain *regdom)
7612 {
7613         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7614                                    NL80211_CMD_GET_REG);
7615
7616         if (!hdr)
7617                 return -1;
7618
7619         genl_dump_check_consistent(cb, hdr);
7620
7621         if (nl80211_put_regdom(regdom, msg))
7622                 goto nla_put_failure;
7623
7624         if (!wiphy && reg_last_request_cell_base() &&
7625             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7626                         NL80211_USER_REG_HINT_CELL_BASE))
7627                 goto nla_put_failure;
7628
7629         if (wiphy &&
7630             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7631                 goto nla_put_failure;
7632
7633         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7634             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7635                 goto nla_put_failure;
7636
7637         genlmsg_end(msg, hdr);
7638         return 0;
7639
7640 nla_put_failure:
7641         genlmsg_cancel(msg, hdr);
7642         return -EMSGSIZE;
7643 }
7644
7645 static int nl80211_get_reg_dump(struct sk_buff *skb,
7646                                 struct netlink_callback *cb)
7647 {
7648         const struct ieee80211_regdomain *regdom = NULL;
7649         struct cfg80211_registered_device *rdev;
7650         int err, reg_idx, start = cb->args[2];
7651
7652         rtnl_lock();
7653
7654         if (cfg80211_regdomain && start == 0) {
7655                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7656                                           NLM_F_MULTI, NULL,
7657                                           rtnl_dereference(cfg80211_regdomain));
7658                 if (err < 0)
7659                         goto out_err;
7660         }
7661
7662         /* the global regdom is idx 0 */
7663         reg_idx = 1;
7664         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7665                 regdom = get_wiphy_regdom(&rdev->wiphy);
7666                 if (!regdom)
7667                         continue;
7668
7669                 if (++reg_idx <= start)
7670                         continue;
7671
7672                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7673                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7674                 if (err < 0) {
7675                         reg_idx--;
7676                         break;
7677                 }
7678         }
7679
7680         cb->args[2] = reg_idx;
7681         err = skb->len;
7682 out_err:
7683         rtnl_unlock();
7684         return err;
7685 }
7686
7687 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7688 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7689         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7690         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7691         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7692         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7693         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7694         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7695         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7696 };
7697
7698 static int parse_reg_rule(struct nlattr *tb[],
7699         struct ieee80211_reg_rule *reg_rule)
7700 {
7701         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7702         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7703
7704         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7705                 return -EINVAL;
7706         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7707                 return -EINVAL;
7708         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7709                 return -EINVAL;
7710         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7711                 return -EINVAL;
7712         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7713                 return -EINVAL;
7714
7715         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7716
7717         freq_range->start_freq_khz =
7718                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7719         freq_range->end_freq_khz =
7720                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7721         freq_range->max_bandwidth_khz =
7722                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7723
7724         power_rule->max_eirp =
7725                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7726
7727         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7728                 power_rule->max_antenna_gain =
7729                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7730
7731         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7732                 reg_rule->dfs_cac_ms =
7733                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7734
7735         return 0;
7736 }
7737
7738 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7739 {
7740         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7741         struct nlattr *nl_reg_rule;
7742         char *alpha2;
7743         int rem_reg_rules, r;
7744         u32 num_rules = 0, rule_idx = 0;
7745         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7746         struct ieee80211_regdomain *rd;
7747
7748         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7749                 return -EINVAL;
7750
7751         if (!info->attrs[NL80211_ATTR_REG_RULES])
7752                 return -EINVAL;
7753
7754         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7755
7756         if (info->attrs[NL80211_ATTR_DFS_REGION])
7757                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7758
7759         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7760                             rem_reg_rules) {
7761                 num_rules++;
7762                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7763                         return -EINVAL;
7764         }
7765
7766         if (!reg_is_valid_request(alpha2))
7767                 return -EINVAL;
7768
7769         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7770         if (!rd)
7771                 return -ENOMEM;
7772
7773         rd->n_reg_rules = num_rules;
7774         rd->alpha2[0] = alpha2[0];
7775         rd->alpha2[1] = alpha2[1];
7776
7777         /*
7778          * Disable DFS master mode if the DFS region was
7779          * not supported or known on this kernel.
7780          */
7781         if (reg_supported_dfs_region(dfs_region))
7782                 rd->dfs_region = dfs_region;
7783
7784         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7785                             rem_reg_rules) {
7786                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7787                                                 nl_reg_rule, reg_rule_policy,
7788                                                 info->extack);
7789                 if (r)
7790                         goto bad_reg;
7791                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7792                 if (r)
7793                         goto bad_reg;
7794
7795                 rule_idx++;
7796
7797                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7798                         r = -EINVAL;
7799                         goto bad_reg;
7800                 }
7801         }
7802
7803         /* set_regdom takes ownership of rd */
7804         return set_regdom(rd, REGD_SOURCE_CRDA);
7805  bad_reg:
7806         kfree(rd);
7807         return r;
7808 }
7809 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7810
7811 static int validate_scan_freqs(struct nlattr *freqs)
7812 {
7813         struct nlattr *attr1, *attr2;
7814         int n_channels = 0, tmp1, tmp2;
7815
7816         nla_for_each_nested(attr1, freqs, tmp1)
7817                 if (nla_len(attr1) != sizeof(u32))
7818                         return 0;
7819
7820         nla_for_each_nested(attr1, freqs, tmp1) {
7821                 n_channels++;
7822                 /*
7823                  * Some hardware has a limited channel list for
7824                  * scanning, and it is pretty much nonsensical
7825                  * to scan for a channel twice, so disallow that
7826                  * and don't require drivers to check that the
7827                  * channel list they get isn't longer than what
7828                  * they can scan, as long as they can scan all
7829                  * the channels they registered at once.
7830                  */
7831                 nla_for_each_nested(attr2, freqs, tmp2)
7832                         if (attr1 != attr2 &&
7833                             nla_get_u32(attr1) == nla_get_u32(attr2))
7834                                 return 0;
7835         }
7836
7837         return n_channels;
7838 }
7839
7840 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7841 {
7842         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7843 }
7844
7845 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7846                             struct cfg80211_bss_selection *bss_select)
7847 {
7848         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7849         struct nlattr *nest;
7850         int err;
7851         bool found = false;
7852         int i;
7853
7854         /* only process one nested attribute */
7855         nest = nla_data(nla);
7856         if (!nla_ok(nest, nla_len(nest)))
7857                 return -EINVAL;
7858
7859         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7860                                           nest, nl80211_bss_select_policy,
7861                                           NULL);
7862         if (err)
7863                 return err;
7864
7865         /* only one attribute may be given */
7866         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7867                 if (attr[i]) {
7868                         if (found)
7869                                 return -EINVAL;
7870                         found = true;
7871                 }
7872         }
7873
7874         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7875
7876         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7877                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7878
7879         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7880                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7881                 bss_select->param.band_pref =
7882                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7883                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7884                         return -EINVAL;
7885         }
7886
7887         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7888                 struct nl80211_bss_select_rssi_adjust *adj_param;
7889
7890                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7891                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7892                 bss_select->param.adjust.band = adj_param->band;
7893                 bss_select->param.adjust.delta = adj_param->delta;
7894                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7895                         return -EINVAL;
7896         }
7897
7898         /* user-space did not provide behaviour attribute */
7899         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7900                 return -EINVAL;
7901
7902         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7903                 return -EINVAL;
7904
7905         return 0;
7906 }
7907
7908 int nl80211_parse_random_mac(struct nlattr **attrs,
7909                              u8 *mac_addr, u8 *mac_addr_mask)
7910 {
7911         int i;
7912
7913         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7914                 eth_zero_addr(mac_addr);
7915                 eth_zero_addr(mac_addr_mask);
7916                 mac_addr[0] = 0x2;
7917                 mac_addr_mask[0] = 0x3;
7918
7919                 return 0;
7920         }
7921
7922         /* need both or none */
7923         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7924                 return -EINVAL;
7925
7926         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7927         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7928
7929         /* don't allow or configure an mcast address */
7930         if (!is_multicast_ether_addr(mac_addr_mask) ||
7931             is_multicast_ether_addr(mac_addr))
7932                 return -EINVAL;
7933
7934         /*
7935          * allow users to pass a MAC address that has bits set outside
7936          * of the mask, but don't bother drivers with having to deal
7937          * with such bits
7938          */
7939         for (i = 0; i < ETH_ALEN; i++)
7940                 mac_addr[i] &= mac_addr_mask[i];
7941
7942         return 0;
7943 }
7944
7945 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7946 {
7947         ASSERT_WDEV_LOCK(wdev);
7948
7949         if (!cfg80211_beaconing_iface_active(wdev))
7950                 return true;
7951
7952         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7953                 return true;
7954
7955         return regulatory_pre_cac_allowed(wdev->wiphy);
7956 }
7957
7958 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7959                                     enum nl80211_ext_feature_index feat)
7960 {
7961         if (!(flags & flag))
7962                 return true;
7963         if (wiphy_ext_feature_isset(wiphy, feat))
7964                 return true;
7965         return false;
7966 }
7967
7968 static int
7969 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7970                          void *request, struct nlattr **attrs,
7971                          bool is_sched_scan)
7972 {
7973         u8 *mac_addr, *mac_addr_mask;
7974         u32 *flags;
7975         enum nl80211_feature_flags randomness_flag;
7976
7977         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7978                 return 0;
7979
7980         if (is_sched_scan) {
7981                 struct cfg80211_sched_scan_request *req = request;
7982
7983                 randomness_flag = wdev ?
7984                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7985                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7986                 flags = &req->flags;
7987                 mac_addr = req->mac_addr;
7988                 mac_addr_mask = req->mac_addr_mask;
7989         } else {
7990                 struct cfg80211_scan_request *req = request;
7991
7992                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7993                 flags = &req->flags;
7994                 mac_addr = req->mac_addr;
7995                 mac_addr_mask = req->mac_addr_mask;
7996         }
7997
7998         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7999
8000         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8001              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8002             !nl80211_check_scan_feat(wiphy, *flags,
8003                                      NL80211_SCAN_FLAG_LOW_SPAN,
8004                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8005             !nl80211_check_scan_feat(wiphy, *flags,
8006                                      NL80211_SCAN_FLAG_LOW_POWER,
8007                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8008             !nl80211_check_scan_feat(wiphy, *flags,
8009                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8010                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8011             !nl80211_check_scan_feat(wiphy, *flags,
8012                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8013                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8014             !nl80211_check_scan_feat(wiphy, *flags,
8015                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8016                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8017             !nl80211_check_scan_feat(wiphy, *flags,
8018                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8019                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8020             !nl80211_check_scan_feat(wiphy, *flags,
8021                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8022                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8023             !nl80211_check_scan_feat(wiphy, *flags,
8024                                      NL80211_SCAN_FLAG_RANDOM_SN,
8025                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8026             !nl80211_check_scan_feat(wiphy, *flags,
8027                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8028                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8029                 return -EOPNOTSUPP;
8030
8031         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8032                 int err;
8033
8034                 if (!(wiphy->features & randomness_flag) ||
8035                     (wdev && wdev->current_bss))
8036                         return -EOPNOTSUPP;
8037
8038                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8039                 if (err)
8040                         return err;
8041         }
8042
8043         return 0;
8044 }
8045
8046 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8047 {
8048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8049         struct wireless_dev *wdev = info->user_ptr[1];
8050         struct cfg80211_scan_request *request;
8051         struct nlattr *scan_freqs = NULL;
8052         bool scan_freqs_khz = false;
8053         struct nlattr *attr;
8054         struct wiphy *wiphy;
8055         int err, tmp, n_ssids = 0, n_channels, i;
8056         size_t ie_len;
8057
8058         wiphy = &rdev->wiphy;
8059
8060         if (wdev->iftype == NL80211_IFTYPE_NAN)
8061                 return -EOPNOTSUPP;
8062
8063         if (!rdev->ops->scan)
8064                 return -EOPNOTSUPP;
8065
8066         if (rdev->scan_req || rdev->scan_msg)
8067                 return -EBUSY;
8068
8069         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8070                 if (!wiphy_ext_feature_isset(wiphy,
8071                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8072                         return -EOPNOTSUPP;
8073                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8074                 scan_freqs_khz = true;
8075         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8076                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8077
8078         if (scan_freqs) {
8079                 n_channels = validate_scan_freqs(scan_freqs);
8080                 if (!n_channels)
8081                         return -EINVAL;
8082         } else {
8083                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8084         }
8085
8086         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8087                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8088                         n_ssids++;
8089
8090         if (n_ssids > wiphy->max_scan_ssids)
8091                 return -EINVAL;
8092
8093         if (info->attrs[NL80211_ATTR_IE])
8094                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8095         else
8096                 ie_len = 0;
8097
8098         if (ie_len > wiphy->max_scan_ie_len)
8099                 return -EINVAL;
8100
8101         request = kzalloc(sizeof(*request)
8102                         + sizeof(*request->ssids) * n_ssids
8103                         + sizeof(*request->channels) * n_channels
8104                         + ie_len, GFP_KERNEL);
8105         if (!request)
8106                 return -ENOMEM;
8107
8108         if (n_ssids)
8109                 request->ssids = (void *)&request->channels[n_channels];
8110         request->n_ssids = n_ssids;
8111         if (ie_len) {
8112                 if (n_ssids)
8113                         request->ie = (void *)(request->ssids + n_ssids);
8114                 else
8115                         request->ie = (void *)(request->channels + n_channels);
8116         }
8117
8118         i = 0;
8119         if (scan_freqs) {
8120                 /* user specified, bail out if channel not found */
8121                 nla_for_each_nested(attr, scan_freqs, tmp) {
8122                         struct ieee80211_channel *chan;
8123                         int freq = nla_get_u32(attr);
8124
8125                         if (!scan_freqs_khz)
8126                                 freq = MHZ_TO_KHZ(freq);
8127
8128                         chan = ieee80211_get_channel_khz(wiphy, freq);
8129                         if (!chan) {
8130                                 err = -EINVAL;
8131                                 goto out_free;
8132                         }
8133
8134                         /* ignore disabled channels */
8135                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8136                                 continue;
8137
8138                         request->channels[i] = chan;
8139                         i++;
8140                 }
8141         } else {
8142                 enum nl80211_band band;
8143
8144                 /* all channels */
8145                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8146                         int j;
8147
8148                         if (!wiphy->bands[band])
8149                                 continue;
8150                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8151                                 struct ieee80211_channel *chan;
8152
8153                                 chan = &wiphy->bands[band]->channels[j];
8154
8155                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8156                                         continue;
8157
8158                                 request->channels[i] = chan;
8159                                 i++;
8160                         }
8161                 }
8162         }
8163
8164         if (!i) {
8165                 err = -EINVAL;
8166                 goto out_free;
8167         }
8168
8169         request->n_channels = i;
8170
8171         wdev_lock(wdev);
8172         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8173                 struct ieee80211_channel *chan;
8174
8175                 if (request->n_channels != 1) {
8176                         wdev_unlock(wdev);
8177                         err = -EBUSY;
8178                         goto out_free;
8179                 }
8180
8181                 chan = request->channels[0];
8182                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8183                         wdev_unlock(wdev);
8184                         err = -EBUSY;
8185                         goto out_free;
8186                 }
8187         }
8188         wdev_unlock(wdev);
8189
8190         i = 0;
8191         if (n_ssids) {
8192                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8193                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8194                                 err = -EINVAL;
8195                                 goto out_free;
8196                         }
8197                         request->ssids[i].ssid_len = nla_len(attr);
8198                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8199                         i++;
8200                 }
8201         }
8202
8203         if (info->attrs[NL80211_ATTR_IE]) {
8204                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8205                 memcpy((void *)request->ie,
8206                        nla_data(info->attrs[NL80211_ATTR_IE]),
8207                        request->ie_len);
8208         }
8209
8210         for (i = 0; i < NUM_NL80211_BANDS; i++)
8211                 if (wiphy->bands[i])
8212                         request->rates[i] =
8213                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8214
8215         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8216                 nla_for_each_nested(attr,
8217                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8218                                     tmp) {
8219                         enum nl80211_band band = nla_type(attr);
8220
8221                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8222                                 err = -EINVAL;
8223                                 goto out_free;
8224                         }
8225
8226                         if (!wiphy->bands[band])
8227                                 continue;
8228
8229                         err = ieee80211_get_ratemask(wiphy->bands[band],
8230                                                      nla_data(attr),
8231                                                      nla_len(attr),
8232                                                      &request->rates[band]);
8233                         if (err)
8234                                 goto out_free;
8235                 }
8236         }
8237
8238         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8239                 if (!wiphy_ext_feature_isset(wiphy,
8240                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
8241                         err = -EOPNOTSUPP;
8242                         goto out_free;
8243                 }
8244
8245                 request->duration =
8246                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8247                 request->duration_mandatory =
8248                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8249         }
8250
8251         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8252                                        false);
8253         if (err)
8254                 goto out_free;
8255
8256         request->no_cck =
8257                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8258
8259         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8260          * BSSID to scan for. This was problematic because that same attribute
8261          * was already used for another purpose (local random MAC address). The
8262          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8263          * compatibility with older userspace components, also use the
8264          * NL80211_ATTR_MAC value here if it can be determined to be used for
8265          * the specific BSSID use case instead of the random MAC address
8266          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8267          */
8268         if (info->attrs[NL80211_ATTR_BSSID])
8269                 memcpy(request->bssid,
8270                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8271         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8272                  info->attrs[NL80211_ATTR_MAC])
8273                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8274                        ETH_ALEN);
8275         else
8276                 eth_broadcast_addr(request->bssid);
8277
8278         request->wdev = wdev;
8279         request->wiphy = &rdev->wiphy;
8280         request->scan_start = jiffies;
8281
8282         rdev->scan_req = request;
8283         err = cfg80211_scan(rdev);
8284
8285         if (err)
8286                 goto out_free;
8287
8288         nl80211_send_scan_start(rdev, wdev);
8289         if (wdev->netdev)
8290                 dev_hold(wdev->netdev);
8291
8292         return 0;
8293
8294  out_free:
8295         rdev->scan_req = NULL;
8296         kfree(request);
8297
8298         return err;
8299 }
8300
8301 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8302 {
8303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8304         struct wireless_dev *wdev = info->user_ptr[1];
8305
8306         if (!rdev->ops->abort_scan)
8307                 return -EOPNOTSUPP;
8308
8309         if (rdev->scan_msg)
8310                 return 0;
8311
8312         if (!rdev->scan_req)
8313                 return -ENOENT;
8314
8315         rdev_abort_scan(rdev, wdev);
8316         return 0;
8317 }
8318
8319 static int
8320 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8321                                struct cfg80211_sched_scan_request *request,
8322                                struct nlattr **attrs)
8323 {
8324         int tmp, err, i = 0;
8325         struct nlattr *attr;
8326
8327         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8328                 u32 interval;
8329
8330                 /*
8331                  * If scan plans are not specified,
8332                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8333                  * case one scan plan will be set with the specified scan
8334                  * interval and infinite number of iterations.
8335                  */
8336                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8337                 if (!interval)
8338                         return -EINVAL;
8339
8340                 request->scan_plans[0].interval =
8341                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8342                 if (!request->scan_plans[0].interval)
8343                         return -EINVAL;
8344
8345                 if (request->scan_plans[0].interval >
8346                     wiphy->max_sched_scan_plan_interval)
8347                         request->scan_plans[0].interval =
8348                                 wiphy->max_sched_scan_plan_interval;
8349
8350                 return 0;
8351         }
8352
8353         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8354                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8355
8356                 if (WARN_ON(i >= n_plans))
8357                         return -EINVAL;
8358
8359                 err = nla_parse_nested_deprecated(plan,
8360                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8361                                                   attr, nl80211_plan_policy,
8362                                                   NULL);
8363                 if (err)
8364                         return err;
8365
8366                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8367                         return -EINVAL;
8368
8369                 request->scan_plans[i].interval =
8370                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8371                 if (!request->scan_plans[i].interval ||
8372                     request->scan_plans[i].interval >
8373                     wiphy->max_sched_scan_plan_interval)
8374                         return -EINVAL;
8375
8376                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8377                         request->scan_plans[i].iterations =
8378                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8379                         if (!request->scan_plans[i].iterations ||
8380                             (request->scan_plans[i].iterations >
8381                              wiphy->max_sched_scan_plan_iterations))
8382                                 return -EINVAL;
8383                 } else if (i < n_plans - 1) {
8384                         /*
8385                          * All scan plans but the last one must specify
8386                          * a finite number of iterations
8387                          */
8388                         return -EINVAL;
8389                 }
8390
8391                 i++;
8392         }
8393
8394         /*
8395          * The last scan plan must not specify the number of
8396          * iterations, it is supposed to run infinitely
8397          */
8398         if (request->scan_plans[n_plans - 1].iterations)
8399                 return  -EINVAL;
8400
8401         return 0;
8402 }
8403
8404 static int
8405 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8406                                        struct cfg80211_match_set *match_sets,
8407                                        struct nlattr *tb_band_rssi,
8408                                        s32 rssi_thold)
8409 {
8410         struct nlattr *attr;
8411         int i, tmp, ret = 0;
8412
8413         if (!wiphy_ext_feature_isset(wiphy,
8414                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8415                 if (tb_band_rssi)
8416                         ret = -EOPNOTSUPP;
8417                 else
8418                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8419                                 match_sets->per_band_rssi_thold[i] =
8420                                         NL80211_SCAN_RSSI_THOLD_OFF;
8421                 return ret;
8422         }
8423
8424         for (i = 0; i < NUM_NL80211_BANDS; i++)
8425                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8426
8427         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8428                 enum nl80211_band band = nla_type(attr);
8429
8430                 if (band < 0 || band >= NUM_NL80211_BANDS)
8431                         return -EINVAL;
8432
8433                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8434         }
8435
8436         return 0;
8437 }
8438
8439 static struct cfg80211_sched_scan_request *
8440 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8441                          struct nlattr **attrs, int max_match_sets)
8442 {
8443         struct cfg80211_sched_scan_request *request;
8444         struct nlattr *attr;
8445         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8446         enum nl80211_band band;
8447         size_t ie_len;
8448         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8449         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8450
8451         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8452                 n_channels = validate_scan_freqs(
8453                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8454                 if (!n_channels)
8455                         return ERR_PTR(-EINVAL);
8456         } else {
8457                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8458         }
8459
8460         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8461                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8462                                     tmp)
8463                         n_ssids++;
8464
8465         if (n_ssids > wiphy->max_sched_scan_ssids)
8466                 return ERR_PTR(-EINVAL);
8467
8468         /*
8469          * First, count the number of 'real' matchsets. Due to an issue with
8470          * the old implementation, matchsets containing only the RSSI attribute
8471          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8472          * RSSI for all matchsets, rather than their own matchset for reporting
8473          * all APs with a strong RSSI. This is needed to be compatible with
8474          * older userspace that treated a matchset with only the RSSI as the
8475          * global RSSI for all other matchsets - if there are other matchsets.
8476          */
8477         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8478                 nla_for_each_nested(attr,
8479                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8480                                     tmp) {
8481                         struct nlattr *rssi;
8482
8483                         err = nla_parse_nested_deprecated(tb,
8484                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8485                                                           attr,
8486                                                           nl80211_match_policy,
8487                                                           NULL);
8488                         if (err)
8489                                 return ERR_PTR(err);
8490
8491                         /* SSID and BSSID are mutually exclusive */
8492                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8493                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8494                                 return ERR_PTR(-EINVAL);
8495
8496                         /* add other standalone attributes here */
8497                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8498                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8499                                 n_match_sets++;
8500                                 continue;
8501                         }
8502                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8503                         if (rssi)
8504                                 default_match_rssi = nla_get_s32(rssi);
8505                 }
8506         }
8507
8508         /* However, if there's no other matchset, add the RSSI one */
8509         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8510                 n_match_sets = 1;
8511
8512         if (n_match_sets > max_match_sets)
8513                 return ERR_PTR(-EINVAL);
8514
8515         if (attrs[NL80211_ATTR_IE])
8516                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8517         else
8518                 ie_len = 0;
8519
8520         if (ie_len > wiphy->max_sched_scan_ie_len)
8521                 return ERR_PTR(-EINVAL);
8522
8523         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8524                 /*
8525                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8526                  * each scan plan already specifies its own interval
8527                  */
8528                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8529                         return ERR_PTR(-EINVAL);
8530
8531                 nla_for_each_nested(attr,
8532                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8533                         n_plans++;
8534         } else {
8535                 /*
8536                  * The scan interval attribute is kept for backward
8537                  * compatibility. If no scan plans are specified and sched scan
8538                  * interval is specified, one scan plan will be set with this
8539                  * scan interval and infinite number of iterations.
8540                  */
8541                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8542                         return ERR_PTR(-EINVAL);
8543
8544                 n_plans = 1;
8545         }
8546
8547         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8548                 return ERR_PTR(-EINVAL);
8549
8550         if (!wiphy_ext_feature_isset(
8551                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8552             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8553              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8554                 return ERR_PTR(-EINVAL);
8555
8556         request = kzalloc(sizeof(*request)
8557                         + sizeof(*request->ssids) * n_ssids
8558                         + sizeof(*request->match_sets) * n_match_sets
8559                         + sizeof(*request->scan_plans) * n_plans
8560                         + sizeof(*request->channels) * n_channels
8561                         + ie_len, GFP_KERNEL);
8562         if (!request)
8563                 return ERR_PTR(-ENOMEM);
8564
8565         if (n_ssids)
8566                 request->ssids = (void *)&request->channels[n_channels];
8567         request->n_ssids = n_ssids;
8568         if (ie_len) {
8569                 if (n_ssids)
8570                         request->ie = (void *)(request->ssids + n_ssids);
8571                 else
8572                         request->ie = (void *)(request->channels + n_channels);
8573         }
8574
8575         if (n_match_sets) {
8576                 if (request->ie)
8577                         request->match_sets = (void *)(request->ie + ie_len);
8578                 else if (n_ssids)
8579                         request->match_sets =
8580                                 (void *)(request->ssids + n_ssids);
8581                 else
8582                         request->match_sets =
8583                                 (void *)(request->channels + n_channels);
8584         }
8585         request->n_match_sets = n_match_sets;
8586
8587         if (n_match_sets)
8588                 request->scan_plans = (void *)(request->match_sets +
8589                                                n_match_sets);
8590         else if (request->ie)
8591                 request->scan_plans = (void *)(request->ie + ie_len);
8592         else if (n_ssids)
8593                 request->scan_plans = (void *)(request->ssids + n_ssids);
8594         else
8595                 request->scan_plans = (void *)(request->channels + n_channels);
8596
8597         request->n_scan_plans = n_plans;
8598
8599         i = 0;
8600         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8601                 /* user specified, bail out if channel not found */
8602                 nla_for_each_nested(attr,
8603                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8604                                     tmp) {
8605                         struct ieee80211_channel *chan;
8606
8607                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8608
8609                         if (!chan) {
8610                                 err = -EINVAL;
8611                                 goto out_free;
8612                         }
8613
8614                         /* ignore disabled channels */
8615                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8616                                 continue;
8617
8618                         request->channels[i] = chan;
8619                         i++;
8620                 }
8621         } else {
8622                 /* all channels */
8623                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8624                         int j;
8625
8626                         if (!wiphy->bands[band])
8627                                 continue;
8628                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8629                                 struct ieee80211_channel *chan;
8630
8631                                 chan = &wiphy->bands[band]->channels[j];
8632
8633                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8634                                         continue;
8635
8636                                 request->channels[i] = chan;
8637                                 i++;
8638                         }
8639                 }
8640         }
8641
8642         if (!i) {
8643                 err = -EINVAL;
8644                 goto out_free;
8645         }
8646
8647         request->n_channels = i;
8648
8649         i = 0;
8650         if (n_ssids) {
8651                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8652                                     tmp) {
8653                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8654                                 err = -EINVAL;
8655                                 goto out_free;
8656                         }
8657                         request->ssids[i].ssid_len = nla_len(attr);
8658                         memcpy(request->ssids[i].ssid, nla_data(attr),
8659                                nla_len(attr));
8660                         i++;
8661                 }
8662         }
8663
8664         i = 0;
8665         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8666                 nla_for_each_nested(attr,
8667                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8668                                     tmp) {
8669                         struct nlattr *ssid, *bssid, *rssi;
8670
8671                         err = nla_parse_nested_deprecated(tb,
8672                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8673                                                           attr,
8674                                                           nl80211_match_policy,
8675                                                           NULL);
8676                         if (err)
8677                                 goto out_free;
8678                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8679                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8680
8681                         if (!ssid && !bssid) {
8682                                 i++;
8683                                 continue;
8684                         }
8685
8686                         if (WARN_ON(i >= n_match_sets)) {
8687                                 /* this indicates a programming error,
8688                                  * the loop above should have verified
8689                                  * things properly
8690                                  */
8691                                 err = -EINVAL;
8692                                 goto out_free;
8693                         }
8694
8695                         if (ssid) {
8696                                 memcpy(request->match_sets[i].ssid.ssid,
8697                                        nla_data(ssid), nla_len(ssid));
8698                                 request->match_sets[i].ssid.ssid_len =
8699                                         nla_len(ssid);
8700                         }
8701                         if (bssid)
8702                                 memcpy(request->match_sets[i].bssid,
8703                                        nla_data(bssid), ETH_ALEN);
8704
8705                         /* special attribute - old implementation w/a */
8706                         request->match_sets[i].rssi_thold = default_match_rssi;
8707                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8708                         if (rssi)
8709                                 request->match_sets[i].rssi_thold =
8710                                         nla_get_s32(rssi);
8711
8712                         /* Parse per band RSSI attribute */
8713                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8714                                 &request->match_sets[i],
8715                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8716                                 request->match_sets[i].rssi_thold);
8717                         if (err)
8718                                 goto out_free;
8719
8720                         i++;
8721                 }
8722
8723                 /* there was no other matchset, so the RSSI one is alone */
8724                 if (i == 0 && n_match_sets)
8725                         request->match_sets[0].rssi_thold = default_match_rssi;
8726
8727                 request->min_rssi_thold = INT_MAX;
8728                 for (i = 0; i < n_match_sets; i++)
8729                         request->min_rssi_thold =
8730                                 min(request->match_sets[i].rssi_thold,
8731                                     request->min_rssi_thold);
8732         } else {
8733                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8734         }
8735
8736         if (ie_len) {
8737                 request->ie_len = ie_len;
8738                 memcpy((void *)request->ie,
8739                        nla_data(attrs[NL80211_ATTR_IE]),
8740                        request->ie_len);
8741         }
8742
8743         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8744         if (err)
8745                 goto out_free;
8746
8747         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8748                 request->delay =
8749                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8750
8751         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8752                 request->relative_rssi = nla_get_s8(
8753                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8754                 request->relative_rssi_set = true;
8755         }
8756
8757         if (request->relative_rssi_set &&
8758             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8759                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8760
8761                 rssi_adjust = nla_data(
8762                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8763                 request->rssi_adjust.band = rssi_adjust->band;
8764                 request->rssi_adjust.delta = rssi_adjust->delta;
8765                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8766                         err = -EINVAL;
8767                         goto out_free;
8768                 }
8769         }
8770
8771         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8772         if (err)
8773                 goto out_free;
8774
8775         request->scan_start = jiffies;
8776
8777         return request;
8778
8779 out_free:
8780         kfree(request);
8781         return ERR_PTR(err);
8782 }
8783
8784 static int nl80211_start_sched_scan(struct sk_buff *skb,
8785                                     struct genl_info *info)
8786 {
8787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8788         struct net_device *dev = info->user_ptr[1];
8789         struct wireless_dev *wdev = dev->ieee80211_ptr;
8790         struct cfg80211_sched_scan_request *sched_scan_req;
8791         bool want_multi;
8792         int err;
8793
8794         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8795                 return -EOPNOTSUPP;
8796
8797         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8798         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8799         if (err)
8800                 return err;
8801
8802         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8803                                                   info->attrs,
8804                                                   rdev->wiphy.max_match_sets);
8805
8806         err = PTR_ERR_OR_ZERO(sched_scan_req);
8807         if (err)
8808                 goto out_err;
8809
8810         /* leave request id zero for legacy request
8811          * or if driver does not support multi-scheduled scan
8812          */
8813         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8814                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8815
8816         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8817         if (err)
8818                 goto out_free;
8819
8820         sched_scan_req->dev = dev;
8821         sched_scan_req->wiphy = &rdev->wiphy;
8822
8823         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8824                 sched_scan_req->owner_nlportid = info->snd_portid;
8825
8826         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8827
8828         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8829         return 0;
8830
8831 out_free:
8832         kfree(sched_scan_req);
8833 out_err:
8834         return err;
8835 }
8836
8837 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8838                                    struct genl_info *info)
8839 {
8840         struct cfg80211_sched_scan_request *req;
8841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8842         u64 cookie;
8843
8844         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8845                 return -EOPNOTSUPP;
8846
8847         if (info->attrs[NL80211_ATTR_COOKIE]) {
8848                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8849                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8850         }
8851
8852         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8853                                      struct cfg80211_sched_scan_request,
8854                                      list);
8855         if (!req || req->reqid ||
8856             (req->owner_nlportid &&
8857              req->owner_nlportid != info->snd_portid))
8858                 return -ENOENT;
8859
8860         return cfg80211_stop_sched_scan_req(rdev, req, false);
8861 }
8862
8863 static int nl80211_start_radar_detection(struct sk_buff *skb,
8864                                          struct genl_info *info)
8865 {
8866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8867         struct net_device *dev = info->user_ptr[1];
8868         struct wireless_dev *wdev = dev->ieee80211_ptr;
8869         struct wiphy *wiphy = wdev->wiphy;
8870         struct cfg80211_chan_def chandef;
8871         enum nl80211_dfs_regions dfs_region;
8872         unsigned int cac_time_ms;
8873         int err;
8874
8875         dfs_region = reg_get_dfs_region(wiphy);
8876         if (dfs_region == NL80211_DFS_UNSET)
8877                 return -EINVAL;
8878
8879         err = nl80211_parse_chandef(rdev, info, &chandef);
8880         if (err)
8881                 return err;
8882
8883         if (netif_carrier_ok(dev))
8884                 return -EBUSY;
8885
8886         if (wdev->cac_started)
8887                 return -EBUSY;
8888
8889         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8890         if (err < 0)
8891                 return err;
8892
8893         if (err == 0)
8894                 return -EINVAL;
8895
8896         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8897                 return -EINVAL;
8898
8899         /* CAC start is offloaded to HW and can't be started manually */
8900         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8901                 return -EOPNOTSUPP;
8902
8903         if (!rdev->ops->start_radar_detection)
8904                 return -EOPNOTSUPP;
8905
8906         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8907         if (WARN_ON(!cac_time_ms))
8908                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8909
8910         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8911         if (!err) {
8912                 wdev->chandef = chandef;
8913                 wdev->cac_started = true;
8914                 wdev->cac_start_time = jiffies;
8915                 wdev->cac_time_ms = cac_time_ms;
8916         }
8917         return err;
8918 }
8919
8920 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8921                                           struct genl_info *info)
8922 {
8923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8924         struct net_device *dev = info->user_ptr[1];
8925         struct wireless_dev *wdev = dev->ieee80211_ptr;
8926         struct wiphy *wiphy = wdev->wiphy;
8927         struct cfg80211_chan_def chandef;
8928         enum nl80211_dfs_regions dfs_region;
8929         int err;
8930
8931         dfs_region = reg_get_dfs_region(wiphy);
8932         if (dfs_region == NL80211_DFS_UNSET) {
8933                 GENL_SET_ERR_MSG(info,
8934                                  "DFS Region is not set. Unexpected Radar indication");
8935                 return -EINVAL;
8936         }
8937
8938         err = nl80211_parse_chandef(rdev, info, &chandef);
8939         if (err) {
8940                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8941                 return err;
8942         }
8943
8944         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8945         if (err < 0) {
8946                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8947                 return err;
8948         }
8949
8950         if (err == 0) {
8951                 GENL_SET_ERR_MSG(info,
8952                                  "Unexpected Radar indication for chandef/iftype");
8953                 return -EINVAL;
8954         }
8955
8956         /* Do not process this notification if radar is already detected
8957          * by kernel on this channel, and return success.
8958          */
8959         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8960                 return 0;
8961
8962         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8963
8964         cfg80211_sched_dfs_chan_update(rdev);
8965
8966         rdev->radar_chandef = chandef;
8967
8968         /* Propagate this notification to other radios as well */
8969         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8970
8971         return 0;
8972 }
8973
8974 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8975 {
8976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8977         struct net_device *dev = info->user_ptr[1];
8978         struct wireless_dev *wdev = dev->ieee80211_ptr;
8979         struct cfg80211_csa_settings params;
8980         /* csa_attrs is defined static to avoid waste of stack size - this
8981          * function is called under RTNL lock, so this should not be a problem.
8982          */
8983         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8984         int err;
8985         bool need_new_beacon = false;
8986         bool need_handle_dfs_flag = true;
8987         int len, i;
8988         u32 cs_count;
8989
8990         if (!rdev->ops->channel_switch ||
8991             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8992                 return -EOPNOTSUPP;
8993
8994         switch (dev->ieee80211_ptr->iftype) {
8995         case NL80211_IFTYPE_AP:
8996         case NL80211_IFTYPE_P2P_GO:
8997                 need_new_beacon = true;
8998                 /* For all modes except AP the handle_dfs flag needs to be
8999                  * supplied to tell the kernel that userspace will handle radar
9000                  * events when they happen. Otherwise a switch to a channel
9001                  * requiring DFS will be rejected.
9002                  */
9003                 need_handle_dfs_flag = false;
9004
9005                 /* useless if AP is not running */
9006                 if (!wdev->beacon_interval)
9007                         return -ENOTCONN;
9008                 break;
9009         case NL80211_IFTYPE_ADHOC:
9010                 if (!wdev->ssid_len)
9011                         return -ENOTCONN;
9012                 break;
9013         case NL80211_IFTYPE_MESH_POINT:
9014                 if (!wdev->mesh_id_len)
9015                         return -ENOTCONN;
9016                 break;
9017         default:
9018                 return -EOPNOTSUPP;
9019         }
9020
9021         memset(&params, 0, sizeof(params));
9022         params.beacon_csa.ftm_responder = -1;
9023
9024         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9025             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9026                 return -EINVAL;
9027
9028         /* only important for AP, IBSS and mesh create IEs internally */
9029         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9030                 return -EINVAL;
9031
9032         /* Even though the attribute is u32, the specification says
9033          * u8, so let's make sure we don't overflow.
9034          */
9035         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9036         if (cs_count > 255)
9037                 return -EINVAL;
9038
9039         params.count = cs_count;
9040
9041         if (!need_new_beacon)
9042                 goto skip_beacons;
9043
9044         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9045         if (err)
9046                 return err;
9047
9048         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9049                                           info->attrs[NL80211_ATTR_CSA_IES],
9050                                           nl80211_policy, info->extack);
9051         if (err)
9052                 return err;
9053
9054         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9055         if (err)
9056                 return err;
9057
9058         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9059                 return -EINVAL;
9060
9061         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9062         if (!len || (len % sizeof(u16)))
9063                 return -EINVAL;
9064
9065         params.n_counter_offsets_beacon = len / sizeof(u16);
9066         if (rdev->wiphy.max_num_csa_counters &&
9067             (params.n_counter_offsets_beacon >
9068              rdev->wiphy.max_num_csa_counters))
9069                 return -EINVAL;
9070
9071         params.counter_offsets_beacon =
9072                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9073
9074         /* sanity checks - counters should fit and be the same */
9075         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9076                 u16 offset = params.counter_offsets_beacon[i];
9077
9078                 if (offset >= params.beacon_csa.tail_len)
9079                         return -EINVAL;
9080
9081                 if (params.beacon_csa.tail[offset] != params.count)
9082                         return -EINVAL;
9083         }
9084
9085         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9086                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9087                 if (!len || (len % sizeof(u16)))
9088                         return -EINVAL;
9089
9090                 params.n_counter_offsets_presp = len / sizeof(u16);
9091                 if (rdev->wiphy.max_num_csa_counters &&
9092                     (params.n_counter_offsets_presp >
9093                      rdev->wiphy.max_num_csa_counters))
9094                         return -EINVAL;
9095
9096                 params.counter_offsets_presp =
9097                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9098
9099                 /* sanity checks - counters should fit and be the same */
9100                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9101                         u16 offset = params.counter_offsets_presp[i];
9102
9103                         if (offset >= params.beacon_csa.probe_resp_len)
9104                                 return -EINVAL;
9105
9106                         if (params.beacon_csa.probe_resp[offset] !=
9107                             params.count)
9108                                 return -EINVAL;
9109                 }
9110         }
9111
9112 skip_beacons:
9113         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9114         if (err)
9115                 return err;
9116
9117         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9118                                            wdev->iftype))
9119                 return -EINVAL;
9120
9121         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9122                                             &params.chandef,
9123                                             wdev->iftype);
9124         if (err < 0)
9125                 return err;
9126
9127         if (err > 0) {
9128                 params.radar_required = true;
9129                 if (need_handle_dfs_flag &&
9130                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9131                         return -EINVAL;
9132                 }
9133         }
9134
9135         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9136                 params.block_tx = true;
9137
9138         wdev_lock(wdev);
9139         err = rdev_channel_switch(rdev, dev, &params);
9140         wdev_unlock(wdev);
9141
9142         return err;
9143 }
9144
9145 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9146                             u32 seq, int flags,
9147                             struct cfg80211_registered_device *rdev,
9148                             struct wireless_dev *wdev,
9149                             struct cfg80211_internal_bss *intbss)
9150 {
9151         struct cfg80211_bss *res = &intbss->pub;
9152         const struct cfg80211_bss_ies *ies;
9153         void *hdr;
9154         struct nlattr *bss;
9155
9156         ASSERT_WDEV_LOCK(wdev);
9157
9158         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9159                              NL80211_CMD_NEW_SCAN_RESULTS);
9160         if (!hdr)
9161                 return -1;
9162
9163         genl_dump_check_consistent(cb, hdr);
9164
9165         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9166                 goto nla_put_failure;
9167         if (wdev->netdev &&
9168             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9169                 goto nla_put_failure;
9170         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9171                               NL80211_ATTR_PAD))
9172                 goto nla_put_failure;
9173
9174         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9175         if (!bss)
9176                 goto nla_put_failure;
9177         if ((!is_zero_ether_addr(res->bssid) &&
9178              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9179                 goto nla_put_failure;
9180
9181         rcu_read_lock();
9182         /* indicate whether we have probe response data or not */
9183         if (rcu_access_pointer(res->proberesp_ies) &&
9184             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9185                 goto fail_unlock_rcu;
9186
9187         /* this pointer prefers to be pointed to probe response data
9188          * but is always valid
9189          */
9190         ies = rcu_dereference(res->ies);
9191         if (ies) {
9192                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9193                                       NL80211_BSS_PAD))
9194                         goto fail_unlock_rcu;
9195                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9196                                         ies->len, ies->data))
9197                         goto fail_unlock_rcu;
9198         }
9199
9200         /* and this pointer is always (unless driver didn't know) beacon data */
9201         ies = rcu_dereference(res->beacon_ies);
9202         if (ies && ies->from_beacon) {
9203                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9204                                       NL80211_BSS_PAD))
9205                         goto fail_unlock_rcu;
9206                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9207                                         ies->len, ies->data))
9208                         goto fail_unlock_rcu;
9209         }
9210         rcu_read_unlock();
9211
9212         if (res->beacon_interval &&
9213             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9214                 goto nla_put_failure;
9215         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9216             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9217             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9218                         res->channel->freq_offset) ||
9219             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9220             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9221                         jiffies_to_msecs(jiffies - intbss->ts)))
9222                 goto nla_put_failure;
9223
9224         if (intbss->parent_tsf &&
9225             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9226                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9227              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9228                      intbss->parent_bssid)))
9229                 goto nla_put_failure;
9230
9231         if (intbss->ts_boottime &&
9232             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9233                               intbss->ts_boottime, NL80211_BSS_PAD))
9234                 goto nla_put_failure;
9235
9236         if (!nl80211_put_signal(msg, intbss->pub.chains,
9237                                 intbss->pub.chain_signal,
9238                                 NL80211_BSS_CHAIN_SIGNAL))
9239                 goto nla_put_failure;
9240
9241         switch (rdev->wiphy.signal_type) {
9242         case CFG80211_SIGNAL_TYPE_MBM:
9243                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9244                         goto nla_put_failure;
9245                 break;
9246         case CFG80211_SIGNAL_TYPE_UNSPEC:
9247                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9248                         goto nla_put_failure;
9249                 break;
9250         default:
9251                 break;
9252         }
9253
9254         switch (wdev->iftype) {
9255         case NL80211_IFTYPE_P2P_CLIENT:
9256         case NL80211_IFTYPE_STATION:
9257                 if (intbss == wdev->current_bss &&
9258                     nla_put_u32(msg, NL80211_BSS_STATUS,
9259                                 NL80211_BSS_STATUS_ASSOCIATED))
9260                         goto nla_put_failure;
9261                 break;
9262         case NL80211_IFTYPE_ADHOC:
9263                 if (intbss == wdev->current_bss &&
9264                     nla_put_u32(msg, NL80211_BSS_STATUS,
9265                                 NL80211_BSS_STATUS_IBSS_JOINED))
9266                         goto nla_put_failure;
9267                 break;
9268         default:
9269                 break;
9270         }
9271
9272         nla_nest_end(msg, bss);
9273
9274         genlmsg_end(msg, hdr);
9275         return 0;
9276
9277  fail_unlock_rcu:
9278         rcu_read_unlock();
9279  nla_put_failure:
9280         genlmsg_cancel(msg, hdr);
9281         return -EMSGSIZE;
9282 }
9283
9284 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9285 {
9286         struct cfg80211_registered_device *rdev;
9287         struct cfg80211_internal_bss *scan;
9288         struct wireless_dev *wdev;
9289         int start = cb->args[2], idx = 0;
9290         int err;
9291
9292         rtnl_lock();
9293         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9294         if (err) {
9295                 rtnl_unlock();
9296                 return err;
9297         }
9298
9299         wdev_lock(wdev);
9300         spin_lock_bh(&rdev->bss_lock);
9301
9302         /*
9303          * dump_scan will be called multiple times to break up the scan results
9304          * into multiple messages.  It is unlikely that any more bss-es will be
9305          * expired after the first call, so only call only call this on the
9306          * first dump_scan invocation.
9307          */
9308         if (start == 0)
9309                 cfg80211_bss_expire(rdev);
9310
9311         cb->seq = rdev->bss_generation;
9312
9313         list_for_each_entry(scan, &rdev->bss_list, list) {
9314                 if (++idx <= start)
9315                         continue;
9316                 if (nl80211_send_bss(skb, cb,
9317                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9318                                 rdev, wdev, scan) < 0) {
9319                         idx--;
9320                         break;
9321                 }
9322         }
9323
9324         spin_unlock_bh(&rdev->bss_lock);
9325         wdev_unlock(wdev);
9326
9327         cb->args[2] = idx;
9328         rtnl_unlock();
9329
9330         return skb->len;
9331 }
9332
9333 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9334                                int flags, struct net_device *dev,
9335                                bool allow_radio_stats,
9336                                struct survey_info *survey)
9337 {
9338         void *hdr;
9339         struct nlattr *infoattr;
9340
9341         /* skip radio stats if userspace didn't request them */
9342         if (!survey->channel && !allow_radio_stats)
9343                 return 0;
9344
9345         hdr = nl80211hdr_put(msg, portid, seq, flags,
9346                              NL80211_CMD_NEW_SURVEY_RESULTS);
9347         if (!hdr)
9348                 return -ENOMEM;
9349
9350         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9351                 goto nla_put_failure;
9352
9353         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9354         if (!infoattr)
9355                 goto nla_put_failure;
9356
9357         if (survey->channel &&
9358             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9359                         survey->channel->center_freq))
9360                 goto nla_put_failure;
9361
9362         if (survey->channel && survey->channel->freq_offset &&
9363             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9364                         survey->channel->freq_offset))
9365                 goto nla_put_failure;
9366
9367         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9368             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9369                 goto nla_put_failure;
9370         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9371             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9372                 goto nla_put_failure;
9373         if ((survey->filled & SURVEY_INFO_TIME) &&
9374             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9375                         survey->time, NL80211_SURVEY_INFO_PAD))
9376                 goto nla_put_failure;
9377         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9378             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9379                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9380                 goto nla_put_failure;
9381         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9382             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9383                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9384                 goto nla_put_failure;
9385         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9386             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9387                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9388                 goto nla_put_failure;
9389         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9390             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9391                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9392                 goto nla_put_failure;
9393         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9394             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9395                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9396                 goto nla_put_failure;
9397         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9398             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9399                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9400                 goto nla_put_failure;
9401
9402         nla_nest_end(msg, infoattr);
9403
9404         genlmsg_end(msg, hdr);
9405         return 0;
9406
9407  nla_put_failure:
9408         genlmsg_cancel(msg, hdr);
9409         return -EMSGSIZE;
9410 }
9411
9412 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9413 {
9414         struct nlattr **attrbuf;
9415         struct survey_info survey;
9416         struct cfg80211_registered_device *rdev;
9417         struct wireless_dev *wdev;
9418         int survey_idx = cb->args[2];
9419         int res;
9420         bool radio_stats;
9421
9422         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9423         if (!attrbuf)
9424                 return -ENOMEM;
9425
9426         rtnl_lock();
9427         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9428         if (res)
9429                 goto out_err;
9430
9431         /* prepare_wdev_dump parsed the attributes */
9432         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9433
9434         if (!wdev->netdev) {
9435                 res = -EINVAL;
9436                 goto out_err;
9437         }
9438
9439         if (!rdev->ops->dump_survey) {
9440                 res = -EOPNOTSUPP;
9441                 goto out_err;
9442         }
9443
9444         while (1) {
9445                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9446                 if (res == -ENOENT)
9447                         break;
9448                 if (res)
9449                         goto out_err;
9450
9451                 /* don't send disabled channels, but do send non-channel data */
9452                 if (survey.channel &&
9453                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9454                         survey_idx++;
9455                         continue;
9456                 }
9457
9458                 if (nl80211_send_survey(skb,
9459                                 NETLINK_CB(cb->skb).portid,
9460                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9461                                 wdev->netdev, radio_stats, &survey) < 0)
9462                         goto out;
9463                 survey_idx++;
9464         }
9465
9466  out:
9467         cb->args[2] = survey_idx;
9468         res = skb->len;
9469  out_err:
9470         kfree(attrbuf);
9471         rtnl_unlock();
9472         return res;
9473 }
9474
9475 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9476 {
9477         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9478                                   NL80211_WPA_VERSION_2 |
9479                                   NL80211_WPA_VERSION_3));
9480 }
9481
9482 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9483 {
9484         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9485         struct net_device *dev = info->user_ptr[1];
9486         struct ieee80211_channel *chan;
9487         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9488         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9489         enum nl80211_auth_type auth_type;
9490         struct key_parse key;
9491         bool local_state_change;
9492         u32 freq;
9493
9494         if (!info->attrs[NL80211_ATTR_MAC])
9495                 return -EINVAL;
9496
9497         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9498                 return -EINVAL;
9499
9500         if (!info->attrs[NL80211_ATTR_SSID])
9501                 return -EINVAL;
9502
9503         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9504                 return -EINVAL;
9505
9506         err = nl80211_parse_key(info, &key);
9507         if (err)
9508                 return err;
9509
9510         if (key.idx >= 0) {
9511                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9512                         return -EINVAL;
9513                 if (!key.p.key || !key.p.key_len)
9514                         return -EINVAL;
9515                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9516                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9517                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9518                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9519                         return -EINVAL;
9520                 if (key.idx > 3)
9521                         return -EINVAL;
9522         } else {
9523                 key.p.key_len = 0;
9524                 key.p.key = NULL;
9525         }
9526
9527         if (key.idx >= 0) {
9528                 int i;
9529                 bool ok = false;
9530
9531                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9532                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9533                                 ok = true;
9534                                 break;
9535                         }
9536                 }
9537                 if (!ok)
9538                         return -EINVAL;
9539         }
9540
9541         if (!rdev->ops->auth)
9542                 return -EOPNOTSUPP;
9543
9544         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9545             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9546                 return -EOPNOTSUPP;
9547
9548         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9549         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9550         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9551                 freq +=
9552                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9553
9554         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9555         if (!chan)
9556                 return -EINVAL;
9557
9558         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9559         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9560
9561         if (info->attrs[NL80211_ATTR_IE]) {
9562                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9563                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9564         }
9565
9566         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9567         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9568                 return -EINVAL;
9569
9570         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9571              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9572              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9573              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9574             !info->attrs[NL80211_ATTR_AUTH_DATA])
9575                 return -EINVAL;
9576
9577         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9578                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9579                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9580                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9581                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9582                         return -EINVAL;
9583                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9584                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9585         }
9586
9587         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9588
9589         /*
9590          * Since we no longer track auth state, ignore
9591          * requests to only change local state.
9592          */
9593         if (local_state_change)
9594                 return 0;
9595
9596         wdev_lock(dev->ieee80211_ptr);
9597         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9598                                  ssid, ssid_len, ie, ie_len,
9599                                  key.p.key, key.p.key_len, key.idx,
9600                                  auth_data, auth_data_len);
9601         wdev_unlock(dev->ieee80211_ptr);
9602         return err;
9603 }
9604
9605 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9606                                      struct genl_info *info)
9607 {
9608         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9609                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9610                 return -EINVAL;
9611         }
9612
9613         if (!rdev->ops->tx_control_port ||
9614             !wiphy_ext_feature_isset(&rdev->wiphy,
9615                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9616                 return -EOPNOTSUPP;
9617
9618         return 0;
9619 }
9620
9621 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9622                                    struct genl_info *info,
9623                                    struct cfg80211_crypto_settings *settings,
9624                                    int cipher_limit)
9625 {
9626         memset(settings, 0, sizeof(*settings));
9627
9628         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9629
9630         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9631                 u16 proto;
9632
9633                 proto = nla_get_u16(
9634                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9635                 settings->control_port_ethertype = cpu_to_be16(proto);
9636                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9637                     proto != ETH_P_PAE)
9638                         return -EINVAL;
9639                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9640                         settings->control_port_no_encrypt = true;
9641         } else
9642                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9643
9644         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9645                 int r = validate_pae_over_nl80211(rdev, info);
9646
9647                 if (r < 0)
9648                         return r;
9649
9650                 settings->control_port_over_nl80211 = true;
9651
9652                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9653                         settings->control_port_no_preauth = true;
9654         }
9655
9656         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9657                 void *data;
9658                 int len, i;
9659
9660                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9661                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9662                 settings->n_ciphers_pairwise = len / sizeof(u32);
9663
9664                 if (len % sizeof(u32))
9665                         return -EINVAL;
9666
9667                 if (settings->n_ciphers_pairwise > cipher_limit)
9668                         return -EINVAL;
9669
9670                 memcpy(settings->ciphers_pairwise, data, len);
9671
9672                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9673                         if (!cfg80211_supported_cipher_suite(
9674                                         &rdev->wiphy,
9675                                         settings->ciphers_pairwise[i]))
9676                                 return -EINVAL;
9677         }
9678
9679         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9680                 settings->cipher_group =
9681                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9682                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9683                                                      settings->cipher_group))
9684                         return -EINVAL;
9685         }
9686
9687         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9688                 settings->wpa_versions =
9689                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9690                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9691                         return -EINVAL;
9692         }
9693
9694         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9695                 void *data;
9696                 int len;
9697
9698                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9699                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9700                 settings->n_akm_suites = len / sizeof(u32);
9701
9702                 if (len % sizeof(u32))
9703                         return -EINVAL;
9704
9705                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9706                         return -EINVAL;
9707
9708                 memcpy(settings->akm_suites, data, len);
9709         }
9710
9711         if (info->attrs[NL80211_ATTR_PMK]) {
9712                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9713                         return -EINVAL;
9714                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9715                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9716                     !wiphy_ext_feature_isset(&rdev->wiphy,
9717                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9718                         return -EINVAL;
9719                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9720         }
9721
9722         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9723                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9724                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9725                     !wiphy_ext_feature_isset(&rdev->wiphy,
9726                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9727                         return -EINVAL;
9728                 settings->sae_pwd =
9729                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9730                 settings->sae_pwd_len =
9731                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9732         }
9733
9734         return 0;
9735 }
9736
9737 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9738 {
9739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9740         struct net_device *dev = info->user_ptr[1];
9741         struct ieee80211_channel *chan;
9742         struct cfg80211_assoc_request req = {};
9743         const u8 *bssid, *ssid;
9744         int err, ssid_len = 0;
9745         u32 freq;
9746
9747         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9748             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9749                 return -EPERM;
9750
9751         if (!info->attrs[NL80211_ATTR_MAC] ||
9752             !info->attrs[NL80211_ATTR_SSID] ||
9753             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9754                 return -EINVAL;
9755
9756         if (!rdev->ops->assoc)
9757                 return -EOPNOTSUPP;
9758
9759         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9760             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9761                 return -EOPNOTSUPP;
9762
9763         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9764
9765         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9766         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9767                 freq +=
9768                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9769         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9770         if (!chan)
9771                 return -EINVAL;
9772
9773         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9774         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9775
9776         if (info->attrs[NL80211_ATTR_IE]) {
9777                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9778                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9779         }
9780
9781         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9782                 enum nl80211_mfp mfp =
9783                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9784                 if (mfp == NL80211_MFP_REQUIRED)
9785                         req.use_mfp = true;
9786                 else if (mfp != NL80211_MFP_NO)
9787                         return -EINVAL;
9788         }
9789
9790         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9791                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9792
9793         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9794                 req.flags |= ASSOC_REQ_DISABLE_HT;
9795
9796         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9797                 memcpy(&req.ht_capa_mask,
9798                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9799                        sizeof(req.ht_capa_mask));
9800
9801         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9802                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9803                         return -EINVAL;
9804                 memcpy(&req.ht_capa,
9805                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9806                        sizeof(req.ht_capa));
9807         }
9808
9809         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9810                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9811
9812         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9813                 memcpy(&req.vht_capa_mask,
9814                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9815                        sizeof(req.vht_capa_mask));
9816
9817         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9818                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9819                         return -EINVAL;
9820                 memcpy(&req.vht_capa,
9821                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9822                        sizeof(req.vht_capa));
9823         }
9824
9825         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9826                 if (!((rdev->wiphy.features &
9827                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9828                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9829                     !wiphy_ext_feature_isset(&rdev->wiphy,
9830                                              NL80211_EXT_FEATURE_RRM))
9831                         return -EINVAL;
9832                 req.flags |= ASSOC_REQ_USE_RRM;
9833         }
9834
9835         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9836                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9837                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9838                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9839                         return -EINVAL;
9840                 req.fils_nonces =
9841                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9842         }
9843
9844         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9845                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9846                         return -EINVAL;
9847                 memcpy(&req.s1g_capa_mask,
9848                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9849                        sizeof(req.s1g_capa_mask));
9850         }
9851
9852         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9853                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9854                         return -EINVAL;
9855                 memcpy(&req.s1g_capa,
9856                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9857                        sizeof(req.s1g_capa));
9858         }
9859
9860         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9861         if (!err) {
9862                 wdev_lock(dev->ieee80211_ptr);
9863
9864                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9865                                           ssid, ssid_len, &req);
9866
9867                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9868                         dev->ieee80211_ptr->conn_owner_nlportid =
9869                                 info->snd_portid;
9870                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9871                                bssid, ETH_ALEN);
9872                 }
9873
9874                 wdev_unlock(dev->ieee80211_ptr);
9875         }
9876
9877         return err;
9878 }
9879
9880 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9881 {
9882         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9883         struct net_device *dev = info->user_ptr[1];
9884         const u8 *ie = NULL, *bssid;
9885         int ie_len = 0, err;
9886         u16 reason_code;
9887         bool local_state_change;
9888
9889         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9890             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9891                 return -EPERM;
9892
9893         if (!info->attrs[NL80211_ATTR_MAC])
9894                 return -EINVAL;
9895
9896         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9897                 return -EINVAL;
9898
9899         if (!rdev->ops->deauth)
9900                 return -EOPNOTSUPP;
9901
9902         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9903             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9904                 return -EOPNOTSUPP;
9905
9906         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9907
9908         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9909         if (reason_code == 0) {
9910                 /* Reason Code 0 is reserved */
9911                 return -EINVAL;
9912         }
9913
9914         if (info->attrs[NL80211_ATTR_IE]) {
9915                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9916                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9917         }
9918
9919         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9920
9921         wdev_lock(dev->ieee80211_ptr);
9922         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9923                                    local_state_change);
9924         wdev_unlock(dev->ieee80211_ptr);
9925         return err;
9926 }
9927
9928 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9929 {
9930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9931         struct net_device *dev = info->user_ptr[1];
9932         const u8 *ie = NULL, *bssid;
9933         int ie_len = 0, err;
9934         u16 reason_code;
9935         bool local_state_change;
9936
9937         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9938             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9939                 return -EPERM;
9940
9941         if (!info->attrs[NL80211_ATTR_MAC])
9942                 return -EINVAL;
9943
9944         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9945                 return -EINVAL;
9946
9947         if (!rdev->ops->disassoc)
9948                 return -EOPNOTSUPP;
9949
9950         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9951             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9952                 return -EOPNOTSUPP;
9953
9954         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9955
9956         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9957         if (reason_code == 0) {
9958                 /* Reason Code 0 is reserved */
9959                 return -EINVAL;
9960         }
9961
9962         if (info->attrs[NL80211_ATTR_IE]) {
9963                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9964                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9965         }
9966
9967         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9968
9969         wdev_lock(dev->ieee80211_ptr);
9970         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9971                                      local_state_change);
9972         wdev_unlock(dev->ieee80211_ptr);
9973         return err;
9974 }
9975
9976 static bool
9977 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9978                          int mcast_rate[NUM_NL80211_BANDS],
9979                          int rateval)
9980 {
9981         struct wiphy *wiphy = &rdev->wiphy;
9982         bool found = false;
9983         int band, i;
9984
9985         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9986                 struct ieee80211_supported_band *sband;
9987
9988                 sband = wiphy->bands[band];
9989                 if (!sband)
9990                         continue;
9991
9992                 for (i = 0; i < sband->n_bitrates; i++) {
9993                         if (sband->bitrates[i].bitrate == rateval) {
9994                                 mcast_rate[band] = i + 1;
9995                                 found = true;
9996                                 break;
9997                         }
9998                 }
9999         }
10000
10001         return found;
10002 }
10003
10004 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10005 {
10006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10007         struct net_device *dev = info->user_ptr[1];
10008         struct cfg80211_ibss_params ibss;
10009         struct wiphy *wiphy;
10010         struct cfg80211_cached_keys *connkeys = NULL;
10011         int err;
10012
10013         memset(&ibss, 0, sizeof(ibss));
10014
10015         if (!info->attrs[NL80211_ATTR_SSID] ||
10016             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10017                 return -EINVAL;
10018
10019         ibss.beacon_interval = 100;
10020
10021         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10022                 ibss.beacon_interval =
10023                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10024
10025         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10026                                            ibss.beacon_interval);
10027         if (err)
10028                 return err;
10029
10030         if (!rdev->ops->join_ibss)
10031                 return -EOPNOTSUPP;
10032
10033         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10034                 return -EOPNOTSUPP;
10035
10036         wiphy = &rdev->wiphy;
10037
10038         if (info->attrs[NL80211_ATTR_MAC]) {
10039                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10040
10041                 if (!is_valid_ether_addr(ibss.bssid))
10042                         return -EINVAL;
10043         }
10044         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10045         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10046
10047         if (info->attrs[NL80211_ATTR_IE]) {
10048                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10049                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10050         }
10051
10052         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10053         if (err)
10054                 return err;
10055
10056         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10057                                      NL80211_IFTYPE_ADHOC))
10058                 return -EINVAL;
10059
10060         switch (ibss.chandef.width) {
10061         case NL80211_CHAN_WIDTH_5:
10062         case NL80211_CHAN_WIDTH_10:
10063         case NL80211_CHAN_WIDTH_20_NOHT:
10064                 break;
10065         case NL80211_CHAN_WIDTH_20:
10066         case NL80211_CHAN_WIDTH_40:
10067                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10068                         return -EINVAL;
10069                 break;
10070         case NL80211_CHAN_WIDTH_80:
10071         case NL80211_CHAN_WIDTH_80P80:
10072         case NL80211_CHAN_WIDTH_160:
10073                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10074                         return -EINVAL;
10075                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10076                                              NL80211_EXT_FEATURE_VHT_IBSS))
10077                         return -EINVAL;
10078                 break;
10079         default:
10080                 return -EINVAL;
10081         }
10082
10083         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10084         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10085
10086         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10087                 u8 *rates =
10088                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10089                 int n_rates =
10090                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10091                 struct ieee80211_supported_band *sband =
10092                         wiphy->bands[ibss.chandef.chan->band];
10093
10094                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10095                                              &ibss.basic_rates);
10096                 if (err)
10097                         return err;
10098         }
10099
10100         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10101                 memcpy(&ibss.ht_capa_mask,
10102                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10103                        sizeof(ibss.ht_capa_mask));
10104
10105         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10106                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10107                         return -EINVAL;
10108                 memcpy(&ibss.ht_capa,
10109                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10110                        sizeof(ibss.ht_capa));
10111         }
10112
10113         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10114             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10115                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10116                 return -EINVAL;
10117
10118         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10119                 bool no_ht = false;
10120
10121                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10122                 if (IS_ERR(connkeys))
10123                         return PTR_ERR(connkeys);
10124
10125                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10126                     no_ht) {
10127                         kfree_sensitive(connkeys);
10128                         return -EINVAL;
10129                 }
10130         }
10131
10132         ibss.control_port =
10133                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10134
10135         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10136                 int r = validate_pae_over_nl80211(rdev, info);
10137
10138                 if (r < 0) {
10139                         kfree_sensitive(connkeys);
10140                         return r;
10141                 }
10142
10143                 ibss.control_port_over_nl80211 = true;
10144         }
10145
10146         ibss.userspace_handles_dfs =
10147                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10148
10149         wdev_lock(dev->ieee80211_ptr);
10150         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10151         if (err)
10152                 kfree_sensitive(connkeys);
10153         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10154                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10155         wdev_unlock(dev->ieee80211_ptr);
10156
10157         return err;
10158 }
10159
10160 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10161 {
10162         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10163         struct net_device *dev = info->user_ptr[1];
10164
10165         if (!rdev->ops->leave_ibss)
10166                 return -EOPNOTSUPP;
10167
10168         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10169                 return -EOPNOTSUPP;
10170
10171         return cfg80211_leave_ibss(rdev, dev, false);
10172 }
10173
10174 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10175 {
10176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10177         struct net_device *dev = info->user_ptr[1];
10178         int mcast_rate[NUM_NL80211_BANDS];
10179         u32 nla_rate;
10180         int err;
10181
10182         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10183             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10184             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10185                 return -EOPNOTSUPP;
10186
10187         if (!rdev->ops->set_mcast_rate)
10188                 return -EOPNOTSUPP;
10189
10190         memset(mcast_rate, 0, sizeof(mcast_rate));
10191
10192         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10193                 return -EINVAL;
10194
10195         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10196         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10197                 return -EINVAL;
10198
10199         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10200
10201         return err;
10202 }
10203
10204 static struct sk_buff *
10205 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10206                             struct wireless_dev *wdev, int approxlen,
10207                             u32 portid, u32 seq, enum nl80211_commands cmd,
10208                             enum nl80211_attrs attr,
10209                             const struct nl80211_vendor_cmd_info *info,
10210                             gfp_t gfp)
10211 {
10212         struct sk_buff *skb;
10213         void *hdr;
10214         struct nlattr *data;
10215
10216         skb = nlmsg_new(approxlen + 100, gfp);
10217         if (!skb)
10218                 return NULL;
10219
10220         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10221         if (!hdr) {
10222                 kfree_skb(skb);
10223                 return NULL;
10224         }
10225
10226         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10227                 goto nla_put_failure;
10228
10229         if (info) {
10230                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10231                                 info->vendor_id))
10232                         goto nla_put_failure;
10233                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10234                                 info->subcmd))
10235                         goto nla_put_failure;
10236         }
10237
10238         if (wdev) {
10239                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10240                                       wdev_id(wdev), NL80211_ATTR_PAD))
10241                         goto nla_put_failure;
10242                 if (wdev->netdev &&
10243                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10244                                 wdev->netdev->ifindex))
10245                         goto nla_put_failure;
10246         }
10247
10248         data = nla_nest_start_noflag(skb, attr);
10249         if (!data)
10250                 goto nla_put_failure;
10251
10252         ((void **)skb->cb)[0] = rdev;
10253         ((void **)skb->cb)[1] = hdr;
10254         ((void **)skb->cb)[2] = data;
10255
10256         return skb;
10257
10258  nla_put_failure:
10259         kfree_skb(skb);
10260         return NULL;
10261 }
10262
10263 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10264                                            struct wireless_dev *wdev,
10265                                            enum nl80211_commands cmd,
10266                                            enum nl80211_attrs attr,
10267                                            unsigned int portid,
10268                                            int vendor_event_idx,
10269                                            int approxlen, gfp_t gfp)
10270 {
10271         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10272         const struct nl80211_vendor_cmd_info *info;
10273
10274         switch (cmd) {
10275         case NL80211_CMD_TESTMODE:
10276                 if (WARN_ON(vendor_event_idx != -1))
10277                         return NULL;
10278                 info = NULL;
10279                 break;
10280         case NL80211_CMD_VENDOR:
10281                 if (WARN_ON(vendor_event_idx < 0 ||
10282                             vendor_event_idx >= wiphy->n_vendor_events))
10283                         return NULL;
10284                 info = &wiphy->vendor_events[vendor_event_idx];
10285                 break;
10286         default:
10287                 WARN_ON(1);
10288                 return NULL;
10289         }
10290
10291         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10292                                            cmd, attr, info, gfp);
10293 }
10294 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10295
10296 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10297 {
10298         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10299         void *hdr = ((void **)skb->cb)[1];
10300         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10301         struct nlattr *data = ((void **)skb->cb)[2];
10302         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10303
10304         /* clear CB data for netlink core to own from now on */
10305         memset(skb->cb, 0, sizeof(skb->cb));
10306
10307         nla_nest_end(skb, data);
10308         genlmsg_end(skb, hdr);
10309
10310         if (nlhdr->nlmsg_pid) {
10311                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10312                                 nlhdr->nlmsg_pid);
10313         } else {
10314                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10315                         mcgrp = NL80211_MCGRP_VENDOR;
10316
10317                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10318                                         skb, 0, mcgrp, gfp);
10319         }
10320 }
10321 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10322
10323 #ifdef CONFIG_NL80211_TESTMODE
10324 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10325 {
10326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10327         struct wireless_dev *wdev =
10328                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10329         int err;
10330
10331         if (!rdev->ops->testmode_cmd)
10332                 return -EOPNOTSUPP;
10333
10334         if (IS_ERR(wdev)) {
10335                 err = PTR_ERR(wdev);
10336                 if (err != -EINVAL)
10337                         return err;
10338                 wdev = NULL;
10339         } else if (wdev->wiphy != &rdev->wiphy) {
10340                 return -EINVAL;
10341         }
10342
10343         if (!info->attrs[NL80211_ATTR_TESTDATA])
10344                 return -EINVAL;
10345
10346         rdev->cur_cmd_info = info;
10347         err = rdev_testmode_cmd(rdev, wdev,
10348                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10349                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10350         rdev->cur_cmd_info = NULL;
10351
10352         return err;
10353 }
10354
10355 static int nl80211_testmode_dump(struct sk_buff *skb,
10356                                  struct netlink_callback *cb)
10357 {
10358         struct cfg80211_registered_device *rdev;
10359         struct nlattr **attrbuf = NULL;
10360         int err;
10361         long phy_idx;
10362         void *data = NULL;
10363         int data_len = 0;
10364
10365         rtnl_lock();
10366
10367         if (cb->args[0]) {
10368                 /*
10369                  * 0 is a valid index, but not valid for args[0],
10370                  * so we need to offset by 1.
10371                  */
10372                 phy_idx = cb->args[0] - 1;
10373
10374                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10375                 if (!rdev) {
10376                         err = -ENOENT;
10377                         goto out_err;
10378                 }
10379         } else {
10380                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10381                                   GFP_KERNEL);
10382                 if (!attrbuf) {
10383                         err = -ENOMEM;
10384                         goto out_err;
10385                 }
10386
10387                 err = nlmsg_parse_deprecated(cb->nlh,
10388                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10389                                              attrbuf, nl80211_fam.maxattr,
10390                                              nl80211_policy, NULL);
10391                 if (err)
10392                         goto out_err;
10393
10394                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10395                 if (IS_ERR(rdev)) {
10396                         err = PTR_ERR(rdev);
10397                         goto out_err;
10398                 }
10399                 phy_idx = rdev->wiphy_idx;
10400
10401                 if (attrbuf[NL80211_ATTR_TESTDATA])
10402                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10403         }
10404
10405         if (cb->args[1]) {
10406                 data = nla_data((void *)cb->args[1]);
10407                 data_len = nla_len((void *)cb->args[1]);
10408         }
10409
10410         if (!rdev->ops->testmode_dump) {
10411                 err = -EOPNOTSUPP;
10412                 goto out_err;
10413         }
10414
10415         while (1) {
10416                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10417                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10418                                            NL80211_CMD_TESTMODE);
10419                 struct nlattr *tmdata;
10420
10421                 if (!hdr)
10422                         break;
10423
10424                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10425                         genlmsg_cancel(skb, hdr);
10426                         break;
10427                 }
10428
10429                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10430                 if (!tmdata) {
10431                         genlmsg_cancel(skb, hdr);
10432                         break;
10433                 }
10434                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10435                 nla_nest_end(skb, tmdata);
10436
10437                 if (err == -ENOBUFS || err == -ENOENT) {
10438                         genlmsg_cancel(skb, hdr);
10439                         break;
10440                 } else if (err) {
10441                         genlmsg_cancel(skb, hdr);
10442                         goto out_err;
10443                 }
10444
10445                 genlmsg_end(skb, hdr);
10446         }
10447
10448         err = skb->len;
10449         /* see above */
10450         cb->args[0] = phy_idx + 1;
10451  out_err:
10452         kfree(attrbuf);
10453         rtnl_unlock();
10454         return err;
10455 }
10456 #endif
10457
10458 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10459 {
10460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10461         struct net_device *dev = info->user_ptr[1];
10462         struct cfg80211_connect_params connect;
10463         struct wiphy *wiphy;
10464         struct cfg80211_cached_keys *connkeys = NULL;
10465         u32 freq = 0;
10466         int err;
10467
10468         memset(&connect, 0, sizeof(connect));
10469
10470         if (!info->attrs[NL80211_ATTR_SSID] ||
10471             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10472                 return -EINVAL;
10473
10474         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10475                 connect.auth_type =
10476                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10477                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10478                                              NL80211_CMD_CONNECT))
10479                         return -EINVAL;
10480         } else
10481                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10482
10483         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10484
10485         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10486             !wiphy_ext_feature_isset(&rdev->wiphy,
10487                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10488                 return -EINVAL;
10489         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10490
10491         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10492                                       NL80211_MAX_NR_CIPHER_SUITES);
10493         if (err)
10494                 return err;
10495
10496         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10497             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10498                 return -EOPNOTSUPP;
10499
10500         wiphy = &rdev->wiphy;
10501
10502         connect.bg_scan_period = -1;
10503         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10504                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10505                 connect.bg_scan_period =
10506                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10507         }
10508
10509         if (info->attrs[NL80211_ATTR_MAC])
10510                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10511         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10512                 connect.bssid_hint =
10513                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10514         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10515         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10516
10517         if (info->attrs[NL80211_ATTR_IE]) {
10518                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10519                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10520         }
10521
10522         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10523                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10524                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10525                     !wiphy_ext_feature_isset(&rdev->wiphy,
10526                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10527                         return -EOPNOTSUPP;
10528         } else {
10529                 connect.mfp = NL80211_MFP_NO;
10530         }
10531
10532         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10533                 connect.prev_bssid =
10534                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10535
10536         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10537                 freq = MHZ_TO_KHZ(nla_get_u32(
10538                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10539         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10540                 freq +=
10541                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10542
10543         if (freq) {
10544                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10545                 if (!connect.channel)
10546                         return -EINVAL;
10547         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10548                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10549                 freq = MHZ_TO_KHZ(freq);
10550                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10551                 if (!connect.channel_hint)
10552                         return -EINVAL;
10553         }
10554
10555         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10556                 connect.edmg.channels =
10557                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10558
10559                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10560                         connect.edmg.bw_config =
10561                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10562         }
10563
10564         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10565                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10566                 if (IS_ERR(connkeys))
10567                         return PTR_ERR(connkeys);
10568         }
10569
10570         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10571                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10572
10573         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10574                 memcpy(&connect.ht_capa_mask,
10575                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10576                        sizeof(connect.ht_capa_mask));
10577
10578         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10579                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10580                         kfree_sensitive(connkeys);
10581                         return -EINVAL;
10582                 }
10583                 memcpy(&connect.ht_capa,
10584                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10585                        sizeof(connect.ht_capa));
10586         }
10587
10588         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10589                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10590
10591         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10592                 memcpy(&connect.vht_capa_mask,
10593                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10594                        sizeof(connect.vht_capa_mask));
10595
10596         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10597                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10598                         kfree_sensitive(connkeys);
10599                         return -EINVAL;
10600                 }
10601                 memcpy(&connect.vht_capa,
10602                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10603                        sizeof(connect.vht_capa));
10604         }
10605
10606         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10607                 if (!((rdev->wiphy.features &
10608                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10609                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10610                     !wiphy_ext_feature_isset(&rdev->wiphy,
10611                                              NL80211_EXT_FEATURE_RRM)) {
10612                         kfree_sensitive(connkeys);
10613                         return -EINVAL;
10614                 }
10615                 connect.flags |= ASSOC_REQ_USE_RRM;
10616         }
10617
10618         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10619         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10620                 kfree_sensitive(connkeys);
10621                 return -EOPNOTSUPP;
10622         }
10623
10624         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10625                 /* bss selection makes no sense if bssid is set */
10626                 if (connect.bssid) {
10627                         kfree_sensitive(connkeys);
10628                         return -EINVAL;
10629                 }
10630
10631                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10632                                        wiphy, &connect.bss_select);
10633                 if (err) {
10634                         kfree_sensitive(connkeys);
10635                         return err;
10636                 }
10637         }
10638
10639         if (wiphy_ext_feature_isset(&rdev->wiphy,
10640                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10641             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10642             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10643             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10644             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10645                 connect.fils_erp_username =
10646                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10647                 connect.fils_erp_username_len =
10648                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10649                 connect.fils_erp_realm =
10650                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10651                 connect.fils_erp_realm_len =
10652                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10653                 connect.fils_erp_next_seq_num =
10654                         nla_get_u16(
10655                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10656                 connect.fils_erp_rrk =
10657                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10658                 connect.fils_erp_rrk_len =
10659                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10660         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10661                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10662                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10663                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10664                 kfree_sensitive(connkeys);
10665                 return -EINVAL;
10666         }
10667
10668         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10669                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10670                         kfree_sensitive(connkeys);
10671                         GENL_SET_ERR_MSG(info,
10672                                          "external auth requires connection ownership");
10673                         return -EINVAL;
10674                 }
10675                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10676         }
10677
10678         wdev_lock(dev->ieee80211_ptr);
10679
10680         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10681                                connect.prev_bssid);
10682         if (err)
10683                 kfree_sensitive(connkeys);
10684
10685         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10686                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10687                 if (connect.bssid)
10688                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10689                                connect.bssid, ETH_ALEN);
10690                 else
10691                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10692         }
10693
10694         wdev_unlock(dev->ieee80211_ptr);
10695
10696         return err;
10697 }
10698
10699 static int nl80211_update_connect_params(struct sk_buff *skb,
10700                                          struct genl_info *info)
10701 {
10702         struct cfg80211_connect_params connect = {};
10703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10704         struct net_device *dev = info->user_ptr[1];
10705         struct wireless_dev *wdev = dev->ieee80211_ptr;
10706         bool fils_sk_offload;
10707         u32 auth_type;
10708         u32 changed = 0;
10709         int ret;
10710
10711         if (!rdev->ops->update_connect_params)
10712                 return -EOPNOTSUPP;
10713
10714         if (info->attrs[NL80211_ATTR_IE]) {
10715                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10716                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10717                 changed |= UPDATE_ASSOC_IES;
10718         }
10719
10720         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10721                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10722
10723         /*
10724          * when driver supports fils-sk offload all attributes must be
10725          * provided. So the else covers "fils-sk-not-all" and
10726          * "no-fils-sk-any".
10727          */
10728         if (fils_sk_offload &&
10729             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10730             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10731             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10732             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10733                 connect.fils_erp_username =
10734                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10735                 connect.fils_erp_username_len =
10736                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10737                 connect.fils_erp_realm =
10738                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10739                 connect.fils_erp_realm_len =
10740                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10741                 connect.fils_erp_next_seq_num =
10742                         nla_get_u16(
10743                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10744                 connect.fils_erp_rrk =
10745                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10746                 connect.fils_erp_rrk_len =
10747                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10748                 changed |= UPDATE_FILS_ERP_INFO;
10749         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10750                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10751                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10752                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10753                 return -EINVAL;
10754         }
10755
10756         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10757                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10758                 if (!nl80211_valid_auth_type(rdev, auth_type,
10759                                              NL80211_CMD_CONNECT))
10760                         return -EINVAL;
10761
10762                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10763                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10764                         return -EINVAL;
10765
10766                 connect.auth_type = auth_type;
10767                 changed |= UPDATE_AUTH_TYPE;
10768         }
10769
10770         wdev_lock(dev->ieee80211_ptr);
10771         if (!wdev->current_bss)
10772                 ret = -ENOLINK;
10773         else
10774                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10775         wdev_unlock(dev->ieee80211_ptr);
10776
10777         return ret;
10778 }
10779
10780 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10781 {
10782         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10783         struct net_device *dev = info->user_ptr[1];
10784         u16 reason;
10785         int ret;
10786
10787         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10788             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10789                 return -EPERM;
10790
10791         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10792                 reason = WLAN_REASON_DEAUTH_LEAVING;
10793         else
10794                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10795
10796         if (reason == 0)
10797                 return -EINVAL;
10798
10799         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10800             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10801                 return -EOPNOTSUPP;
10802
10803         wdev_lock(dev->ieee80211_ptr);
10804         ret = cfg80211_disconnect(rdev, dev, reason, true);
10805         wdev_unlock(dev->ieee80211_ptr);
10806         return ret;
10807 }
10808
10809 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10810 {
10811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10812         struct net *net;
10813         int err;
10814
10815         if (info->attrs[NL80211_ATTR_PID]) {
10816                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10817
10818                 net = get_net_ns_by_pid(pid);
10819         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10820                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10821
10822                 net = get_net_ns_by_fd(fd);
10823         } else {
10824                 return -EINVAL;
10825         }
10826
10827         if (IS_ERR(net))
10828                 return PTR_ERR(net);
10829
10830         err = 0;
10831
10832         /* check if anything to do */
10833         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10834                 err = cfg80211_switch_netns(rdev, net);
10835
10836         put_net(net);
10837         return err;
10838 }
10839
10840 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10841 {
10842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10843         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10844                         struct cfg80211_pmksa *pmksa) = NULL;
10845         struct net_device *dev = info->user_ptr[1];
10846         struct cfg80211_pmksa pmksa;
10847
10848         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10849
10850         if (!info->attrs[NL80211_ATTR_PMKID])
10851                 return -EINVAL;
10852
10853         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10854
10855         if (info->attrs[NL80211_ATTR_MAC]) {
10856                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10857         } else if (info->attrs[NL80211_ATTR_SSID] &&
10858                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10859                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10860                     info->attrs[NL80211_ATTR_PMK])) {
10861                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10862                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10863                 pmksa.cache_id =
10864                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10865         } else {
10866                 return -EINVAL;
10867         }
10868         if (info->attrs[NL80211_ATTR_PMK]) {
10869                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10870                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10871         }
10872
10873         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10874                 pmksa.pmk_lifetime =
10875                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10876
10877         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10878                 pmksa.pmk_reauth_threshold =
10879                         nla_get_u8(
10880                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10881
10882         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10883             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10884             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10885               wiphy_ext_feature_isset(&rdev->wiphy,
10886                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10887                 return -EOPNOTSUPP;
10888
10889         switch (info->genlhdr->cmd) {
10890         case NL80211_CMD_SET_PMKSA:
10891                 rdev_ops = rdev->ops->set_pmksa;
10892                 break;
10893         case NL80211_CMD_DEL_PMKSA:
10894                 rdev_ops = rdev->ops->del_pmksa;
10895                 break;
10896         default:
10897                 WARN_ON(1);
10898                 break;
10899         }
10900
10901         if (!rdev_ops)
10902                 return -EOPNOTSUPP;
10903
10904         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10905 }
10906
10907 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10908 {
10909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10910         struct net_device *dev = info->user_ptr[1];
10911
10912         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10913             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10914                 return -EOPNOTSUPP;
10915
10916         if (!rdev->ops->flush_pmksa)
10917                 return -EOPNOTSUPP;
10918
10919         return rdev_flush_pmksa(rdev, dev);
10920 }
10921
10922 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10923 {
10924         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10925         struct net_device *dev = info->user_ptr[1];
10926         u8 action_code, dialog_token;
10927         u32 peer_capability = 0;
10928         u16 status_code;
10929         u8 *peer;
10930         bool initiator;
10931
10932         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10933             !rdev->ops->tdls_mgmt)
10934                 return -EOPNOTSUPP;
10935
10936         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10937             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10938             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10939             !info->attrs[NL80211_ATTR_IE] ||
10940             !info->attrs[NL80211_ATTR_MAC])
10941                 return -EINVAL;
10942
10943         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10944         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10945         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10946         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10947         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10948         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10949                 peer_capability =
10950                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10951
10952         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10953                               dialog_token, status_code, peer_capability,
10954                               initiator,
10955                               nla_data(info->attrs[NL80211_ATTR_IE]),
10956                               nla_len(info->attrs[NL80211_ATTR_IE]));
10957 }
10958
10959 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10960 {
10961         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10962         struct net_device *dev = info->user_ptr[1];
10963         enum nl80211_tdls_operation operation;
10964         u8 *peer;
10965
10966         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10967             !rdev->ops->tdls_oper)
10968                 return -EOPNOTSUPP;
10969
10970         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10971             !info->attrs[NL80211_ATTR_MAC])
10972                 return -EINVAL;
10973
10974         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10975         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10976
10977         return rdev_tdls_oper(rdev, dev, peer, operation);
10978 }
10979
10980 static int nl80211_remain_on_channel(struct sk_buff *skb,
10981                                      struct genl_info *info)
10982 {
10983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10984         struct wireless_dev *wdev = info->user_ptr[1];
10985         struct cfg80211_chan_def chandef;
10986         const struct cfg80211_chan_def *compat_chandef;
10987         struct sk_buff *msg;
10988         void *hdr;
10989         u64 cookie;
10990         u32 duration;
10991         int err;
10992
10993         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10994             !info->attrs[NL80211_ATTR_DURATION])
10995                 return -EINVAL;
10996
10997         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10998
10999         if (!rdev->ops->remain_on_channel ||
11000             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11001                 return -EOPNOTSUPP;
11002
11003         /*
11004          * We should be on that channel for at least a minimum amount of
11005          * time (10ms) but no longer than the driver supports.
11006          */
11007         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11008             duration > rdev->wiphy.max_remain_on_channel_duration)
11009                 return -EINVAL;
11010
11011         err = nl80211_parse_chandef(rdev, info, &chandef);
11012         if (err)
11013                 return err;
11014
11015         wdev_lock(wdev);
11016         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11017             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11018                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11019                                                              &chandef);
11020                 if (compat_chandef != &chandef) {
11021                         wdev_unlock(wdev);
11022                         return -EBUSY;
11023                 }
11024         }
11025         wdev_unlock(wdev);
11026
11027         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11028         if (!msg)
11029                 return -ENOMEM;
11030
11031         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11032                              NL80211_CMD_REMAIN_ON_CHANNEL);
11033         if (!hdr) {
11034                 err = -ENOBUFS;
11035                 goto free_msg;
11036         }
11037
11038         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11039                                      duration, &cookie);
11040
11041         if (err)
11042                 goto free_msg;
11043
11044         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11045                               NL80211_ATTR_PAD))
11046                 goto nla_put_failure;
11047
11048         genlmsg_end(msg, hdr);
11049
11050         return genlmsg_reply(msg, info);
11051
11052  nla_put_failure:
11053         err = -ENOBUFS;
11054  free_msg:
11055         nlmsg_free(msg);
11056         return err;
11057 }
11058
11059 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11060                                             struct genl_info *info)
11061 {
11062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11063         struct wireless_dev *wdev = info->user_ptr[1];
11064         u64 cookie;
11065
11066         if (!info->attrs[NL80211_ATTR_COOKIE])
11067                 return -EINVAL;
11068
11069         if (!rdev->ops->cancel_remain_on_channel)
11070                 return -EOPNOTSUPP;
11071
11072         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11073
11074         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11075 }
11076
11077 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11078                                        struct genl_info *info)
11079 {
11080         struct cfg80211_bitrate_mask mask;
11081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11082         struct net_device *dev = info->user_ptr[1];
11083         int err;
11084
11085         if (!rdev->ops->set_bitrate_mask)
11086                 return -EOPNOTSUPP;
11087
11088         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11089                                             NL80211_ATTR_TX_RATES, &mask,
11090                                             dev);
11091         if (err)
11092                 return err;
11093
11094         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11095 }
11096
11097 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11098 {
11099         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11100         struct wireless_dev *wdev = info->user_ptr[1];
11101         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11102
11103         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11104                 return -EINVAL;
11105
11106         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11107                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11108
11109         switch (wdev->iftype) {
11110         case NL80211_IFTYPE_STATION:
11111         case NL80211_IFTYPE_ADHOC:
11112         case NL80211_IFTYPE_P2P_CLIENT:
11113         case NL80211_IFTYPE_AP:
11114         case NL80211_IFTYPE_AP_VLAN:
11115         case NL80211_IFTYPE_MESH_POINT:
11116         case NL80211_IFTYPE_P2P_GO:
11117         case NL80211_IFTYPE_P2P_DEVICE:
11118                 break;
11119         case NL80211_IFTYPE_NAN:
11120         default:
11121                 return -EOPNOTSUPP;
11122         }
11123
11124         /* not much point in registering if we can't reply */
11125         if (!rdev->ops->mgmt_tx)
11126                 return -EOPNOTSUPP;
11127
11128         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11129             !wiphy_ext_feature_isset(&rdev->wiphy,
11130                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11131                 GENL_SET_ERR_MSG(info,
11132                                  "multicast RX registrations are not supported");
11133                 return -EOPNOTSUPP;
11134         }
11135
11136         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11137                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11138                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11139                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11140                                            info->extack);
11141 }
11142
11143 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11144 {
11145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11146         struct wireless_dev *wdev = info->user_ptr[1];
11147         struct cfg80211_chan_def chandef;
11148         int err;
11149         void *hdr = NULL;
11150         u64 cookie;
11151         struct sk_buff *msg = NULL;
11152         struct cfg80211_mgmt_tx_params params = {
11153                 .dont_wait_for_ack =
11154                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11155         };
11156
11157         if (!info->attrs[NL80211_ATTR_FRAME])
11158                 return -EINVAL;
11159
11160         if (!rdev->ops->mgmt_tx)
11161                 return -EOPNOTSUPP;
11162
11163         switch (wdev->iftype) {
11164         case NL80211_IFTYPE_P2P_DEVICE:
11165                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11166                         return -EINVAL;
11167         case NL80211_IFTYPE_STATION:
11168         case NL80211_IFTYPE_ADHOC:
11169         case NL80211_IFTYPE_P2P_CLIENT:
11170         case NL80211_IFTYPE_AP:
11171         case NL80211_IFTYPE_AP_VLAN:
11172         case NL80211_IFTYPE_MESH_POINT:
11173         case NL80211_IFTYPE_P2P_GO:
11174                 break;
11175         case NL80211_IFTYPE_NAN:
11176         default:
11177                 return -EOPNOTSUPP;
11178         }
11179
11180         if (info->attrs[NL80211_ATTR_DURATION]) {
11181                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11182                         return -EINVAL;
11183                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11184
11185                 /*
11186                  * We should wait on the channel for at least a minimum amount
11187                  * of time (10ms) but no longer than the driver supports.
11188                  */
11189                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11190                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11191                         return -EINVAL;
11192         }
11193
11194         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11195
11196         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11197                 return -EINVAL;
11198
11199         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11200
11201         /* get the channel if any has been specified, otherwise pass NULL to
11202          * the driver. The latter will use the current one
11203          */
11204         chandef.chan = NULL;
11205         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11206                 err = nl80211_parse_chandef(rdev, info, &chandef);
11207                 if (err)
11208                         return err;
11209         }
11210
11211         if (!chandef.chan && params.offchan)
11212                 return -EINVAL;
11213
11214         wdev_lock(wdev);
11215         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11216                 wdev_unlock(wdev);
11217                 return -EBUSY;
11218         }
11219         wdev_unlock(wdev);
11220
11221         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11222         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11223
11224         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11225                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11226                 int i;
11227
11228                 if (len % sizeof(u16))
11229                         return -EINVAL;
11230
11231                 params.n_csa_offsets = len / sizeof(u16);
11232                 params.csa_offsets =
11233                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11234
11235                 /* check that all the offsets fit the frame */
11236                 for (i = 0; i < params.n_csa_offsets; i++) {
11237                         if (params.csa_offsets[i] >= params.len)
11238                                 return -EINVAL;
11239                 }
11240         }
11241
11242         if (!params.dont_wait_for_ack) {
11243                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11244                 if (!msg)
11245                         return -ENOMEM;
11246
11247                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11248                                      NL80211_CMD_FRAME);
11249                 if (!hdr) {
11250                         err = -ENOBUFS;
11251                         goto free_msg;
11252                 }
11253         }
11254
11255         params.chan = chandef.chan;
11256         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11257         if (err)
11258                 goto free_msg;
11259
11260         if (msg) {
11261                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11262                                       NL80211_ATTR_PAD))
11263                         goto nla_put_failure;
11264
11265                 genlmsg_end(msg, hdr);
11266                 return genlmsg_reply(msg, info);
11267         }
11268
11269         return 0;
11270
11271  nla_put_failure:
11272         err = -ENOBUFS;
11273  free_msg:
11274         nlmsg_free(msg);
11275         return err;
11276 }
11277
11278 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11279 {
11280         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11281         struct wireless_dev *wdev = info->user_ptr[1];
11282         u64 cookie;
11283
11284         if (!info->attrs[NL80211_ATTR_COOKIE])
11285                 return -EINVAL;
11286
11287         if (!rdev->ops->mgmt_tx_cancel_wait)
11288                 return -EOPNOTSUPP;
11289
11290         switch (wdev->iftype) {
11291         case NL80211_IFTYPE_STATION:
11292         case NL80211_IFTYPE_ADHOC:
11293         case NL80211_IFTYPE_P2P_CLIENT:
11294         case NL80211_IFTYPE_AP:
11295         case NL80211_IFTYPE_AP_VLAN:
11296         case NL80211_IFTYPE_P2P_GO:
11297         case NL80211_IFTYPE_P2P_DEVICE:
11298                 break;
11299         case NL80211_IFTYPE_NAN:
11300         default:
11301                 return -EOPNOTSUPP;
11302         }
11303
11304         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11305
11306         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11307 }
11308
11309 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11310 {
11311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11312         struct wireless_dev *wdev;
11313         struct net_device *dev = info->user_ptr[1];
11314         u8 ps_state;
11315         bool state;
11316         int err;
11317
11318         if (!info->attrs[NL80211_ATTR_PS_STATE])
11319                 return -EINVAL;
11320
11321         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11322
11323         wdev = dev->ieee80211_ptr;
11324
11325         if (!rdev->ops->set_power_mgmt)
11326                 return -EOPNOTSUPP;
11327
11328         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11329
11330         if (state == wdev->ps)
11331                 return 0;
11332
11333         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11334         if (!err)
11335                 wdev->ps = state;
11336         return err;
11337 }
11338
11339 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11340 {
11341         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11342         enum nl80211_ps_state ps_state;
11343         struct wireless_dev *wdev;
11344         struct net_device *dev = info->user_ptr[1];
11345         struct sk_buff *msg;
11346         void *hdr;
11347         int err;
11348
11349         wdev = dev->ieee80211_ptr;
11350
11351         if (!rdev->ops->set_power_mgmt)
11352                 return -EOPNOTSUPP;
11353
11354         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11355         if (!msg)
11356                 return -ENOMEM;
11357
11358         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11359                              NL80211_CMD_GET_POWER_SAVE);
11360         if (!hdr) {
11361                 err = -ENOBUFS;
11362                 goto free_msg;
11363         }
11364
11365         if (wdev->ps)
11366                 ps_state = NL80211_PS_ENABLED;
11367         else
11368                 ps_state = NL80211_PS_DISABLED;
11369
11370         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11371                 goto nla_put_failure;
11372
11373         genlmsg_end(msg, hdr);
11374         return genlmsg_reply(msg, info);
11375
11376  nla_put_failure:
11377         err = -ENOBUFS;
11378  free_msg:
11379         nlmsg_free(msg);
11380         return err;
11381 }
11382
11383 static const struct nla_policy
11384 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11385         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11386         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11387         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11388         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11389         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11390         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11391         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11392 };
11393
11394 static int nl80211_set_cqm_txe(struct genl_info *info,
11395                                u32 rate, u32 pkts, u32 intvl)
11396 {
11397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11398         struct net_device *dev = info->user_ptr[1];
11399         struct wireless_dev *wdev = dev->ieee80211_ptr;
11400
11401         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11402                 return -EINVAL;
11403
11404         if (!rdev->ops->set_cqm_txe_config)
11405                 return -EOPNOTSUPP;
11406
11407         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11408             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11409                 return -EOPNOTSUPP;
11410
11411         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11412 }
11413
11414 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11415                                     struct net_device *dev)
11416 {
11417         struct wireless_dev *wdev = dev->ieee80211_ptr;
11418         s32 last, low, high;
11419         u32 hyst;
11420         int i, n, low_index;
11421         int err;
11422
11423         /* RSSI reporting disabled? */
11424         if (!wdev->cqm_config)
11425                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11426
11427         /*
11428          * Obtain current RSSI value if possible, if not and no RSSI threshold
11429          * event has been received yet, we should receive an event after a
11430          * connection is established and enough beacons received to calculate
11431          * the average.
11432          */
11433         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11434             rdev->ops->get_station) {
11435                 struct station_info sinfo = {};
11436                 u8 *mac_addr;
11437
11438                 mac_addr = wdev->current_bss->pub.bssid;
11439
11440                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11441                 if (err)
11442                         return err;
11443
11444                 cfg80211_sinfo_release_content(&sinfo);
11445                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11446                         wdev->cqm_config->last_rssi_event_value =
11447                                 (s8) sinfo.rx_beacon_signal_avg;
11448         }
11449
11450         last = wdev->cqm_config->last_rssi_event_value;
11451         hyst = wdev->cqm_config->rssi_hyst;
11452         n = wdev->cqm_config->n_rssi_thresholds;
11453
11454         for (i = 0; i < n; i++) {
11455                 i = array_index_nospec(i, n);
11456                 if (last < wdev->cqm_config->rssi_thresholds[i])
11457                         break;
11458         }
11459
11460         low_index = i - 1;
11461         if (low_index >= 0) {
11462                 low_index = array_index_nospec(low_index, n);
11463                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11464         } else {
11465                 low = S32_MIN;
11466         }
11467         if (i < n) {
11468                 i = array_index_nospec(i, n);
11469                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11470         } else {
11471                 high = S32_MAX;
11472         }
11473
11474         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11475 }
11476
11477 static int nl80211_set_cqm_rssi(struct genl_info *info,
11478                                 const s32 *thresholds, int n_thresholds,
11479                                 u32 hysteresis)
11480 {
11481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11482         struct net_device *dev = info->user_ptr[1];
11483         struct wireless_dev *wdev = dev->ieee80211_ptr;
11484         int i, err;
11485         s32 prev = S32_MIN;
11486
11487         /* Check all values negative and sorted */
11488         for (i = 0; i < n_thresholds; i++) {
11489                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11490                         return -EINVAL;
11491
11492                 prev = thresholds[i];
11493         }
11494
11495         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11496             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11497                 return -EOPNOTSUPP;
11498
11499         wdev_lock(wdev);
11500         cfg80211_cqm_config_free(wdev);
11501         wdev_unlock(wdev);
11502
11503         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11504                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11505                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11506
11507                 return rdev_set_cqm_rssi_config(rdev, dev,
11508                                                 thresholds[0], hysteresis);
11509         }
11510
11511         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11512                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11513                 return -EOPNOTSUPP;
11514
11515         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11516                 n_thresholds = 0;
11517
11518         wdev_lock(wdev);
11519         if (n_thresholds) {
11520                 struct cfg80211_cqm_config *cqm_config;
11521
11522                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11523                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11524                 if (!cqm_config) {
11525                         err = -ENOMEM;
11526                         goto unlock;
11527                 }
11528
11529                 cqm_config->rssi_hyst = hysteresis;
11530                 cqm_config->n_rssi_thresholds = n_thresholds;
11531                 memcpy(cqm_config->rssi_thresholds, thresholds,
11532                        n_thresholds * sizeof(s32));
11533
11534                 wdev->cqm_config = cqm_config;
11535         }
11536
11537         err = cfg80211_cqm_rssi_update(rdev, dev);
11538
11539 unlock:
11540         wdev_unlock(wdev);
11541
11542         return err;
11543 }
11544
11545 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11546 {
11547         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11548         struct nlattr *cqm;
11549         int err;
11550
11551         cqm = info->attrs[NL80211_ATTR_CQM];
11552         if (!cqm)
11553                 return -EINVAL;
11554
11555         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11556                                           nl80211_attr_cqm_policy,
11557                                           info->extack);
11558         if (err)
11559                 return err;
11560
11561         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11562             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11563                 const s32 *thresholds =
11564                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11565                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11566                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11567
11568                 if (len % 4)
11569                         return -EINVAL;
11570
11571                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11572                                             hysteresis);
11573         }
11574
11575         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11576             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11577             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11578                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11579                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11580                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11581
11582                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11583         }
11584
11585         return -EINVAL;
11586 }
11587
11588 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11589 {
11590         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11591         struct net_device *dev = info->user_ptr[1];
11592         struct ocb_setup setup = {};
11593         int err;
11594
11595         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11596         if (err)
11597                 return err;
11598
11599         return cfg80211_join_ocb(rdev, dev, &setup);
11600 }
11601
11602 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11603 {
11604         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11605         struct net_device *dev = info->user_ptr[1];
11606
11607         return cfg80211_leave_ocb(rdev, dev);
11608 }
11609
11610 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11611 {
11612         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11613         struct net_device *dev = info->user_ptr[1];
11614         struct mesh_config cfg;
11615         struct mesh_setup setup;
11616         int err;
11617
11618         /* start with default */
11619         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11620         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11621
11622         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11623                 /* and parse parameters if given */
11624                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11625                 if (err)
11626                         return err;
11627         }
11628
11629         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11630             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11631                 return -EINVAL;
11632
11633         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11634         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11635
11636         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11637             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11638                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11639                         return -EINVAL;
11640
11641         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11642                 setup.beacon_interval =
11643                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11644
11645                 err = cfg80211_validate_beacon_int(rdev,
11646                                                    NL80211_IFTYPE_MESH_POINT,
11647                                                    setup.beacon_interval);
11648                 if (err)
11649                         return err;
11650         }
11651
11652         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11653                 setup.dtim_period =
11654                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11655                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11656                         return -EINVAL;
11657         }
11658
11659         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11660                 /* parse additional setup parameters if given */
11661                 err = nl80211_parse_mesh_setup(info, &setup);
11662                 if (err)
11663                         return err;
11664         }
11665
11666         if (setup.user_mpm)
11667                 cfg.auto_open_plinks = false;
11668
11669         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11670                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11671                 if (err)
11672                         return err;
11673         } else {
11674                 /* __cfg80211_join_mesh() will sort it out */
11675                 setup.chandef.chan = NULL;
11676         }
11677
11678         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11679                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11680                 int n_rates =
11681                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11682                 struct ieee80211_supported_band *sband;
11683
11684                 if (!setup.chandef.chan)
11685                         return -EINVAL;
11686
11687                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11688
11689                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11690                                              &setup.basic_rates);
11691                 if (err)
11692                         return err;
11693         }
11694
11695         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11696                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11697                                                     NL80211_ATTR_TX_RATES,
11698                                                     &setup.beacon_rate,
11699                                                     dev);
11700                 if (err)
11701                         return err;
11702
11703                 if (!setup.chandef.chan)
11704                         return -EINVAL;
11705
11706                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11707                                               &setup.beacon_rate);
11708                 if (err)
11709                         return err;
11710         }
11711
11712         setup.userspace_handles_dfs =
11713                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11714
11715         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11716                 int r = validate_pae_over_nl80211(rdev, info);
11717
11718                 if (r < 0)
11719                         return r;
11720
11721                 setup.control_port_over_nl80211 = true;
11722         }
11723
11724         wdev_lock(dev->ieee80211_ptr);
11725         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11726         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11727                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11728         wdev_unlock(dev->ieee80211_ptr);
11729
11730         return err;
11731 }
11732
11733 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11734 {
11735         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11736         struct net_device *dev = info->user_ptr[1];
11737
11738         return cfg80211_leave_mesh(rdev, dev);
11739 }
11740
11741 #ifdef CONFIG_PM
11742 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11743                                         struct cfg80211_registered_device *rdev)
11744 {
11745         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11746         struct nlattr *nl_pats, *nl_pat;
11747         int i, pat_len;
11748
11749         if (!wowlan->n_patterns)
11750                 return 0;
11751
11752         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11753         if (!nl_pats)
11754                 return -ENOBUFS;
11755
11756         for (i = 0; i < wowlan->n_patterns; i++) {
11757                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11758                 if (!nl_pat)
11759                         return -ENOBUFS;
11760                 pat_len = wowlan->patterns[i].pattern_len;
11761                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11762                             wowlan->patterns[i].mask) ||
11763                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11764                             wowlan->patterns[i].pattern) ||
11765                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11766                                 wowlan->patterns[i].pkt_offset))
11767                         return -ENOBUFS;
11768                 nla_nest_end(msg, nl_pat);
11769         }
11770         nla_nest_end(msg, nl_pats);
11771
11772         return 0;
11773 }
11774
11775 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11776                                    struct cfg80211_wowlan_tcp *tcp)
11777 {
11778         struct nlattr *nl_tcp;
11779
11780         if (!tcp)
11781                 return 0;
11782
11783         nl_tcp = nla_nest_start_noflag(msg,
11784                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11785         if (!nl_tcp)
11786                 return -ENOBUFS;
11787
11788         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11789             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11790             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11791             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11792             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11793             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11794                     tcp->payload_len, tcp->payload) ||
11795             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11796                         tcp->data_interval) ||
11797             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11798                     tcp->wake_len, tcp->wake_data) ||
11799             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11800                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11801                 return -ENOBUFS;
11802
11803         if (tcp->payload_seq.len &&
11804             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11805                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11806                 return -ENOBUFS;
11807
11808         if (tcp->payload_tok.len &&
11809             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11810                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11811                     &tcp->payload_tok))
11812                 return -ENOBUFS;
11813
11814         nla_nest_end(msg, nl_tcp);
11815
11816         return 0;
11817 }
11818
11819 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11820                                   struct cfg80211_sched_scan_request *req)
11821 {
11822         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11823         int i;
11824
11825         if (!req)
11826                 return 0;
11827
11828         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11829         if (!nd)
11830                 return -ENOBUFS;
11831
11832         if (req->n_scan_plans == 1 &&
11833             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11834                         req->scan_plans[0].interval * 1000))
11835                 return -ENOBUFS;
11836
11837         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11838                 return -ENOBUFS;
11839
11840         if (req->relative_rssi_set) {
11841                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11842
11843                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11844                                req->relative_rssi))
11845                         return -ENOBUFS;
11846
11847                 rssi_adjust.band = req->rssi_adjust.band;
11848                 rssi_adjust.delta = req->rssi_adjust.delta;
11849                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11850                             sizeof(rssi_adjust), &rssi_adjust))
11851                         return -ENOBUFS;
11852         }
11853
11854         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11855         if (!freqs)
11856                 return -ENOBUFS;
11857
11858         for (i = 0; i < req->n_channels; i++) {
11859                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11860                         return -ENOBUFS;
11861         }
11862
11863         nla_nest_end(msg, freqs);
11864
11865         if (req->n_match_sets) {
11866                 matches = nla_nest_start_noflag(msg,
11867                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11868                 if (!matches)
11869                         return -ENOBUFS;
11870
11871                 for (i = 0; i < req->n_match_sets; i++) {
11872                         match = nla_nest_start_noflag(msg, i);
11873                         if (!match)
11874                                 return -ENOBUFS;
11875
11876                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11877                                     req->match_sets[i].ssid.ssid_len,
11878                                     req->match_sets[i].ssid.ssid))
11879                                 return -ENOBUFS;
11880                         nla_nest_end(msg, match);
11881                 }
11882                 nla_nest_end(msg, matches);
11883         }
11884
11885         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11886         if (!scan_plans)
11887                 return -ENOBUFS;
11888
11889         for (i = 0; i < req->n_scan_plans; i++) {
11890                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11891                 if (!scan_plan)
11892                         return -ENOBUFS;
11893
11894                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11895                                 req->scan_plans[i].interval) ||
11896                     (req->scan_plans[i].iterations &&
11897                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11898                                  req->scan_plans[i].iterations)))
11899                         return -ENOBUFS;
11900                 nla_nest_end(msg, scan_plan);
11901         }
11902         nla_nest_end(msg, scan_plans);
11903
11904         nla_nest_end(msg, nd);
11905
11906         return 0;
11907 }
11908
11909 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11910 {
11911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11912         struct sk_buff *msg;
11913         void *hdr;
11914         u32 size = NLMSG_DEFAULT_SIZE;
11915
11916         if (!rdev->wiphy.wowlan)
11917                 return -EOPNOTSUPP;
11918
11919         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11920                 /* adjust size to have room for all the data */
11921                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11922                         rdev->wiphy.wowlan_config->tcp->payload_len +
11923                         rdev->wiphy.wowlan_config->tcp->wake_len +
11924                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11925         }
11926
11927         msg = nlmsg_new(size, GFP_KERNEL);
11928         if (!msg)
11929                 return -ENOMEM;
11930
11931         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11932                              NL80211_CMD_GET_WOWLAN);
11933         if (!hdr)
11934                 goto nla_put_failure;
11935
11936         if (rdev->wiphy.wowlan_config) {
11937                 struct nlattr *nl_wowlan;
11938
11939                 nl_wowlan = nla_nest_start_noflag(msg,
11940                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11941                 if (!nl_wowlan)
11942                         goto nla_put_failure;
11943
11944                 if ((rdev->wiphy.wowlan_config->any &&
11945                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11946                     (rdev->wiphy.wowlan_config->disconnect &&
11947                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11948                     (rdev->wiphy.wowlan_config->magic_pkt &&
11949                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11950                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11951                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11952                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11953                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11954                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11955                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11956                     (rdev->wiphy.wowlan_config->rfkill_release &&
11957                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11958                         goto nla_put_failure;
11959
11960                 if (nl80211_send_wowlan_patterns(msg, rdev))
11961                         goto nla_put_failure;
11962
11963                 if (nl80211_send_wowlan_tcp(msg,
11964                                             rdev->wiphy.wowlan_config->tcp))
11965                         goto nla_put_failure;
11966
11967                 if (nl80211_send_wowlan_nd(
11968                             msg,
11969                             rdev->wiphy.wowlan_config->nd_config))
11970                         goto nla_put_failure;
11971
11972                 nla_nest_end(msg, nl_wowlan);
11973         }
11974
11975         genlmsg_end(msg, hdr);
11976         return genlmsg_reply(msg, info);
11977
11978 nla_put_failure:
11979         nlmsg_free(msg);
11980         return -ENOBUFS;
11981 }
11982
11983 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11984                                     struct nlattr *attr,
11985                                     struct cfg80211_wowlan *trig)
11986 {
11987         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11988         struct cfg80211_wowlan_tcp *cfg;
11989         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11990         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11991         u32 size;
11992         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11993         int err, port;
11994
11995         if (!rdev->wiphy.wowlan->tcp)
11996                 return -EINVAL;
11997
11998         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11999                                           nl80211_wowlan_tcp_policy, NULL);
12000         if (err)
12001                 return err;
12002
12003         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12004             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12005             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12006             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12007             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12008             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12009             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12010             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12011                 return -EINVAL;
12012
12013         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12014         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12015                 return -EINVAL;
12016
12017         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12018                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12019             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12020                 return -EINVAL;
12021
12022         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12023         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12024                 return -EINVAL;
12025
12026         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12027         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12028                 return -EINVAL;
12029
12030         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12031                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12032
12033                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12034                 tokens_size = tokln - sizeof(*tok);
12035
12036                 if (!tok->len || tokens_size % tok->len)
12037                         return -EINVAL;
12038                 if (!rdev->wiphy.wowlan->tcp->tok)
12039                         return -EINVAL;
12040                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12041                         return -EINVAL;
12042                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12043                         return -EINVAL;
12044                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12045                         return -EINVAL;
12046                 if (tok->offset + tok->len > data_size)
12047                         return -EINVAL;
12048         }
12049
12050         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12051                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12052                 if (!rdev->wiphy.wowlan->tcp->seq)
12053                         return -EINVAL;
12054                 if (seq->len == 0 || seq->len > 4)
12055                         return -EINVAL;
12056                 if (seq->len + seq->offset > data_size)
12057                         return -EINVAL;
12058         }
12059
12060         size = sizeof(*cfg);
12061         size += data_size;
12062         size += wake_size + wake_mask_size;
12063         size += tokens_size;
12064
12065         cfg = kzalloc(size, GFP_KERNEL);
12066         if (!cfg)
12067                 return -ENOMEM;
12068         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12069         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12070         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12071                ETH_ALEN);
12072         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12073                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12074         else
12075                 port = 0;
12076 #ifdef CONFIG_INET
12077         /* allocate a socket and port for it and use it */
12078         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12079                             IPPROTO_TCP, &cfg->sock, 1);
12080         if (err) {
12081                 kfree(cfg);
12082                 return err;
12083         }
12084         if (inet_csk_get_port(cfg->sock->sk, port)) {
12085                 sock_release(cfg->sock);
12086                 kfree(cfg);
12087                 return -EADDRINUSE;
12088         }
12089         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12090 #else
12091         if (!port) {
12092                 kfree(cfg);
12093                 return -EINVAL;
12094         }
12095         cfg->src_port = port;
12096 #endif
12097
12098         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12099         cfg->payload_len = data_size;
12100         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12101         memcpy((void *)cfg->payload,
12102                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12103                data_size);
12104         if (seq)
12105                 cfg->payload_seq = *seq;
12106         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12107         cfg->wake_len = wake_size;
12108         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12109         memcpy((void *)cfg->wake_data,
12110                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12111                wake_size);
12112         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12113                          data_size + wake_size;
12114         memcpy((void *)cfg->wake_mask,
12115                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12116                wake_mask_size);
12117         if (tok) {
12118                 cfg->tokens_size = tokens_size;
12119                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12120         }
12121
12122         trig->tcp = cfg;
12123
12124         return 0;
12125 }
12126
12127 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12128                                    const struct wiphy_wowlan_support *wowlan,
12129                                    struct nlattr *attr,
12130                                    struct cfg80211_wowlan *trig)
12131 {
12132         struct nlattr **tb;
12133         int err;
12134
12135         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12136         if (!tb)
12137                 return -ENOMEM;
12138
12139         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12140                 err = -EOPNOTSUPP;
12141                 goto out;
12142         }
12143
12144         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12145                                           nl80211_policy, NULL);
12146         if (err)
12147                 goto out;
12148
12149         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12150                                                    wowlan->max_nd_match_sets);
12151         err = PTR_ERR_OR_ZERO(trig->nd_config);
12152         if (err)
12153                 trig->nd_config = NULL;
12154
12155 out:
12156         kfree(tb);
12157         return err;
12158 }
12159
12160 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12161 {
12162         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12163         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12164         struct cfg80211_wowlan new_triggers = {};
12165         struct cfg80211_wowlan *ntrig;
12166         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12167         int err, i;
12168         bool prev_enabled = rdev->wiphy.wowlan_config;
12169         bool regular = false;
12170
12171         if (!wowlan)
12172                 return -EOPNOTSUPP;
12173
12174         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12175                 cfg80211_rdev_free_wowlan(rdev);
12176                 rdev->wiphy.wowlan_config = NULL;
12177                 goto set_wakeup;
12178         }
12179
12180         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12181                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12182                                           nl80211_wowlan_policy, info->extack);
12183         if (err)
12184                 return err;
12185
12186         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12187                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12188                         return -EINVAL;
12189                 new_triggers.any = true;
12190         }
12191
12192         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12193                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12194                         return -EINVAL;
12195                 new_triggers.disconnect = true;
12196                 regular = true;
12197         }
12198
12199         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12200                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12201                         return -EINVAL;
12202                 new_triggers.magic_pkt = true;
12203                 regular = true;
12204         }
12205
12206         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12207                 return -EINVAL;
12208
12209         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12210                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12211                         return -EINVAL;
12212                 new_triggers.gtk_rekey_failure = true;
12213                 regular = true;
12214         }
12215
12216         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12217                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12218                         return -EINVAL;
12219                 new_triggers.eap_identity_req = true;
12220                 regular = true;
12221         }
12222
12223         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12224                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12225                         return -EINVAL;
12226                 new_triggers.four_way_handshake = true;
12227                 regular = true;
12228         }
12229
12230         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12231                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12232                         return -EINVAL;
12233                 new_triggers.rfkill_release = true;
12234                 regular = true;
12235         }
12236
12237         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12238                 struct nlattr *pat;
12239                 int n_patterns = 0;
12240                 int rem, pat_len, mask_len, pkt_offset;
12241                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12242
12243                 regular = true;
12244
12245                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12246                                     rem)
12247                         n_patterns++;
12248                 if (n_patterns > wowlan->n_patterns)
12249                         return -EINVAL;
12250
12251                 new_triggers.patterns = kcalloc(n_patterns,
12252                                                 sizeof(new_triggers.patterns[0]),
12253                                                 GFP_KERNEL);
12254                 if (!new_triggers.patterns)
12255                         return -ENOMEM;
12256
12257                 new_triggers.n_patterns = n_patterns;
12258                 i = 0;
12259
12260                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12261                                     rem) {
12262                         u8 *mask_pat;
12263
12264                         err = nla_parse_nested_deprecated(pat_tb,
12265                                                           MAX_NL80211_PKTPAT,
12266                                                           pat,
12267                                                           nl80211_packet_pattern_policy,
12268                                                           info->extack);
12269                         if (err)
12270                                 goto error;
12271
12272                         err = -EINVAL;
12273                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12274                             !pat_tb[NL80211_PKTPAT_PATTERN])
12275                                 goto error;
12276                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12277                         mask_len = DIV_ROUND_UP(pat_len, 8);
12278                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12279                                 goto error;
12280                         if (pat_len > wowlan->pattern_max_len ||
12281                             pat_len < wowlan->pattern_min_len)
12282                                 goto error;
12283
12284                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12285                                 pkt_offset = 0;
12286                         else
12287                                 pkt_offset = nla_get_u32(
12288                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12289                         if (pkt_offset > wowlan->max_pkt_offset)
12290                                 goto error;
12291                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12292
12293                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12294                         if (!mask_pat) {
12295                                 err = -ENOMEM;
12296                                 goto error;
12297                         }
12298                         new_triggers.patterns[i].mask = mask_pat;
12299                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12300                                mask_len);
12301                         mask_pat += mask_len;
12302                         new_triggers.patterns[i].pattern = mask_pat;
12303                         new_triggers.patterns[i].pattern_len = pat_len;
12304                         memcpy(mask_pat,
12305                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12306                                pat_len);
12307                         i++;
12308                 }
12309         }
12310
12311         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12312                 regular = true;
12313                 err = nl80211_parse_wowlan_tcp(
12314                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12315                         &new_triggers);
12316                 if (err)
12317                         goto error;
12318         }
12319
12320         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12321                 regular = true;
12322                 err = nl80211_parse_wowlan_nd(
12323                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12324                         &new_triggers);
12325                 if (err)
12326                         goto error;
12327         }
12328
12329         /* The 'any' trigger means the device continues operating more or less
12330          * as in its normal operation mode and wakes up the host on most of the
12331          * normal interrupts (like packet RX, ...)
12332          * It therefore makes little sense to combine with the more constrained
12333          * wakeup trigger modes.
12334          */
12335         if (new_triggers.any && regular) {
12336                 err = -EINVAL;
12337                 goto error;
12338         }
12339
12340         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12341         if (!ntrig) {
12342                 err = -ENOMEM;
12343                 goto error;
12344         }
12345         cfg80211_rdev_free_wowlan(rdev);
12346         rdev->wiphy.wowlan_config = ntrig;
12347
12348  set_wakeup:
12349         if (rdev->ops->set_wakeup &&
12350             prev_enabled != !!rdev->wiphy.wowlan_config)
12351                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12352
12353         return 0;
12354  error:
12355         for (i = 0; i < new_triggers.n_patterns; i++)
12356                 kfree(new_triggers.patterns[i].mask);
12357         kfree(new_triggers.patterns);
12358         if (new_triggers.tcp && new_triggers.tcp->sock)
12359                 sock_release(new_triggers.tcp->sock);
12360         kfree(new_triggers.tcp);
12361         kfree(new_triggers.nd_config);
12362         return err;
12363 }
12364 #endif
12365
12366 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12367                                        struct cfg80211_registered_device *rdev)
12368 {
12369         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12370         int i, j, pat_len;
12371         struct cfg80211_coalesce_rules *rule;
12372
12373         if (!rdev->coalesce->n_rules)
12374                 return 0;
12375
12376         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12377         if (!nl_rules)
12378                 return -ENOBUFS;
12379
12380         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12381                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12382                 if (!nl_rule)
12383                         return -ENOBUFS;
12384
12385                 rule = &rdev->coalesce->rules[i];
12386                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12387                                 rule->delay))
12388                         return -ENOBUFS;
12389
12390                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12391                                 rule->condition))
12392                         return -ENOBUFS;
12393
12394                 nl_pats = nla_nest_start_noflag(msg,
12395                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12396                 if (!nl_pats)
12397                         return -ENOBUFS;
12398
12399                 for (j = 0; j < rule->n_patterns; j++) {
12400                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12401                         if (!nl_pat)
12402                                 return -ENOBUFS;
12403                         pat_len = rule->patterns[j].pattern_len;
12404                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12405                                     DIV_ROUND_UP(pat_len, 8),
12406                                     rule->patterns[j].mask) ||
12407                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12408                                     rule->patterns[j].pattern) ||
12409                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12410                                         rule->patterns[j].pkt_offset))
12411                                 return -ENOBUFS;
12412                         nla_nest_end(msg, nl_pat);
12413                 }
12414                 nla_nest_end(msg, nl_pats);
12415                 nla_nest_end(msg, nl_rule);
12416         }
12417         nla_nest_end(msg, nl_rules);
12418
12419         return 0;
12420 }
12421
12422 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12423 {
12424         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12425         struct sk_buff *msg;
12426         void *hdr;
12427
12428         if (!rdev->wiphy.coalesce)
12429                 return -EOPNOTSUPP;
12430
12431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12432         if (!msg)
12433                 return -ENOMEM;
12434
12435         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12436                              NL80211_CMD_GET_COALESCE);
12437         if (!hdr)
12438                 goto nla_put_failure;
12439
12440         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12441                 goto nla_put_failure;
12442
12443         genlmsg_end(msg, hdr);
12444         return genlmsg_reply(msg, info);
12445
12446 nla_put_failure:
12447         nlmsg_free(msg);
12448         return -ENOBUFS;
12449 }
12450
12451 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12452 {
12453         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12454         int i, j;
12455         struct cfg80211_coalesce_rules *rule;
12456
12457         if (!coalesce)
12458                 return;
12459
12460         for (i = 0; i < coalesce->n_rules; i++) {
12461                 rule = &coalesce->rules[i];
12462                 for (j = 0; j < rule->n_patterns; j++)
12463                         kfree(rule->patterns[j].mask);
12464                 kfree(rule->patterns);
12465         }
12466         kfree(coalesce->rules);
12467         kfree(coalesce);
12468         rdev->coalesce = NULL;
12469 }
12470
12471 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12472                                        struct nlattr *rule,
12473                                        struct cfg80211_coalesce_rules *new_rule)
12474 {
12475         int err, i;
12476         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12477         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12478         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12479         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12480
12481         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12482                                           rule, nl80211_coalesce_policy, NULL);
12483         if (err)
12484                 return err;
12485
12486         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12487                 new_rule->delay =
12488                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12489         if (new_rule->delay > coalesce->max_delay)
12490                 return -EINVAL;
12491
12492         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12493                 new_rule->condition =
12494                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12495
12496         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12497                 return -EINVAL;
12498
12499         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12500                             rem)
12501                 n_patterns++;
12502         if (n_patterns > coalesce->n_patterns)
12503                 return -EINVAL;
12504
12505         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12506                                      GFP_KERNEL);
12507         if (!new_rule->patterns)
12508                 return -ENOMEM;
12509
12510         new_rule->n_patterns = n_patterns;
12511         i = 0;
12512
12513         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12514                             rem) {
12515                 u8 *mask_pat;
12516
12517                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12518                                                   pat,
12519                                                   nl80211_packet_pattern_policy,
12520                                                   NULL);
12521                 if (err)
12522                         return err;
12523
12524                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12525                     !pat_tb[NL80211_PKTPAT_PATTERN])
12526                         return -EINVAL;
12527                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12528                 mask_len = DIV_ROUND_UP(pat_len, 8);
12529                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12530                         return -EINVAL;
12531                 if (pat_len > coalesce->pattern_max_len ||
12532                     pat_len < coalesce->pattern_min_len)
12533                         return -EINVAL;
12534
12535                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12536                         pkt_offset = 0;
12537                 else
12538                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12539                 if (pkt_offset > coalesce->max_pkt_offset)
12540                         return -EINVAL;
12541                 new_rule->patterns[i].pkt_offset = pkt_offset;
12542
12543                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12544                 if (!mask_pat)
12545                         return -ENOMEM;
12546
12547                 new_rule->patterns[i].mask = mask_pat;
12548                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12549                        mask_len);
12550
12551                 mask_pat += mask_len;
12552                 new_rule->patterns[i].pattern = mask_pat;
12553                 new_rule->patterns[i].pattern_len = pat_len;
12554                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12555                        pat_len);
12556                 i++;
12557         }
12558
12559         return 0;
12560 }
12561
12562 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12563 {
12564         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12565         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12566         struct cfg80211_coalesce new_coalesce = {};
12567         struct cfg80211_coalesce *n_coalesce;
12568         int err, rem_rule, n_rules = 0, i, j;
12569         struct nlattr *rule;
12570         struct cfg80211_coalesce_rules *tmp_rule;
12571
12572         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12573                 return -EOPNOTSUPP;
12574
12575         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12576                 cfg80211_rdev_free_coalesce(rdev);
12577                 rdev_set_coalesce(rdev, NULL);
12578                 return 0;
12579         }
12580
12581         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12582                             rem_rule)
12583                 n_rules++;
12584         if (n_rules > coalesce->n_rules)
12585                 return -EINVAL;
12586
12587         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12588                                      GFP_KERNEL);
12589         if (!new_coalesce.rules)
12590                 return -ENOMEM;
12591
12592         new_coalesce.n_rules = n_rules;
12593         i = 0;
12594
12595         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12596                             rem_rule) {
12597                 err = nl80211_parse_coalesce_rule(rdev, rule,
12598                                                   &new_coalesce.rules[i]);
12599                 if (err)
12600                         goto error;
12601
12602                 i++;
12603         }
12604
12605         err = rdev_set_coalesce(rdev, &new_coalesce);
12606         if (err)
12607                 goto error;
12608
12609         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12610         if (!n_coalesce) {
12611                 err = -ENOMEM;
12612                 goto error;
12613         }
12614         cfg80211_rdev_free_coalesce(rdev);
12615         rdev->coalesce = n_coalesce;
12616
12617         return 0;
12618 error:
12619         for (i = 0; i < new_coalesce.n_rules; i++) {
12620                 tmp_rule = &new_coalesce.rules[i];
12621                 for (j = 0; j < tmp_rule->n_patterns; j++)
12622                         kfree(tmp_rule->patterns[j].mask);
12623                 kfree(tmp_rule->patterns);
12624         }
12625         kfree(new_coalesce.rules);
12626
12627         return err;
12628 }
12629
12630 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12631 {
12632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12633         struct net_device *dev = info->user_ptr[1];
12634         struct wireless_dev *wdev = dev->ieee80211_ptr;
12635         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12636         struct cfg80211_gtk_rekey_data rekey_data;
12637         int err;
12638
12639         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12640                 return -EINVAL;
12641
12642         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12643                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12644                                           nl80211_rekey_policy, info->extack);
12645         if (err)
12646                 return err;
12647
12648         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12649             !tb[NL80211_REKEY_DATA_KCK])
12650                 return -EINVAL;
12651         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12652             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12653               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12654                 return -ERANGE;
12655         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12656             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12657               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12658                 return -ERANGE;
12659
12660         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12661         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12662         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12663         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12664         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12665         if (tb[NL80211_REKEY_DATA_AKM])
12666                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12667
12668         wdev_lock(wdev);
12669         if (!wdev->current_bss) {
12670                 err = -ENOTCONN;
12671                 goto out;
12672         }
12673
12674         if (!rdev->ops->set_rekey_data) {
12675                 err = -EOPNOTSUPP;
12676                 goto out;
12677         }
12678
12679         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12680  out:
12681         wdev_unlock(wdev);
12682         return err;
12683 }
12684
12685 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12686                                              struct genl_info *info)
12687 {
12688         struct net_device *dev = info->user_ptr[1];
12689         struct wireless_dev *wdev = dev->ieee80211_ptr;
12690
12691         if (wdev->iftype != NL80211_IFTYPE_AP &&
12692             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12693                 return -EINVAL;
12694
12695         if (wdev->ap_unexpected_nlportid)
12696                 return -EBUSY;
12697
12698         wdev->ap_unexpected_nlportid = info->snd_portid;
12699         return 0;
12700 }
12701
12702 static int nl80211_probe_client(struct sk_buff *skb,
12703                                 struct genl_info *info)
12704 {
12705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12706         struct net_device *dev = info->user_ptr[1];
12707         struct wireless_dev *wdev = dev->ieee80211_ptr;
12708         struct sk_buff *msg;
12709         void *hdr;
12710         const u8 *addr;
12711         u64 cookie;
12712         int err;
12713
12714         if (wdev->iftype != NL80211_IFTYPE_AP &&
12715             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12716                 return -EOPNOTSUPP;
12717
12718         if (!info->attrs[NL80211_ATTR_MAC])
12719                 return -EINVAL;
12720
12721         if (!rdev->ops->probe_client)
12722                 return -EOPNOTSUPP;
12723
12724         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12725         if (!msg)
12726                 return -ENOMEM;
12727
12728         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12729                              NL80211_CMD_PROBE_CLIENT);
12730         if (!hdr) {
12731                 err = -ENOBUFS;
12732                 goto free_msg;
12733         }
12734
12735         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12736
12737         err = rdev_probe_client(rdev, dev, addr, &cookie);
12738         if (err)
12739                 goto free_msg;
12740
12741         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12742                               NL80211_ATTR_PAD))
12743                 goto nla_put_failure;
12744
12745         genlmsg_end(msg, hdr);
12746
12747         return genlmsg_reply(msg, info);
12748
12749  nla_put_failure:
12750         err = -ENOBUFS;
12751  free_msg:
12752         nlmsg_free(msg);
12753         return err;
12754 }
12755
12756 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12757 {
12758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12759         struct cfg80211_beacon_registration *reg, *nreg;
12760         int rv;
12761
12762         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12763                 return -EOPNOTSUPP;
12764
12765         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12766         if (!nreg)
12767                 return -ENOMEM;
12768
12769         /* First, check if already registered. */
12770         spin_lock_bh(&rdev->beacon_registrations_lock);
12771         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12772                 if (reg->nlportid == info->snd_portid) {
12773                         rv = -EALREADY;
12774                         goto out_err;
12775                 }
12776         }
12777         /* Add it to the list */
12778         nreg->nlportid = info->snd_portid;
12779         list_add(&nreg->list, &rdev->beacon_registrations);
12780
12781         spin_unlock_bh(&rdev->beacon_registrations_lock);
12782
12783         return 0;
12784 out_err:
12785         spin_unlock_bh(&rdev->beacon_registrations_lock);
12786         kfree(nreg);
12787         return rv;
12788 }
12789
12790 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12791 {
12792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12793         struct wireless_dev *wdev = info->user_ptr[1];
12794         int err;
12795
12796         if (!rdev->ops->start_p2p_device)
12797                 return -EOPNOTSUPP;
12798
12799         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12800                 return -EOPNOTSUPP;
12801
12802         if (wdev_running(wdev))
12803                 return 0;
12804
12805         if (rfkill_blocked(rdev->rfkill))
12806                 return -ERFKILL;
12807
12808         err = rdev_start_p2p_device(rdev, wdev);
12809         if (err)
12810                 return err;
12811
12812         wdev->is_running = true;
12813         rdev->opencount++;
12814
12815         return 0;
12816 }
12817
12818 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12819 {
12820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12821         struct wireless_dev *wdev = info->user_ptr[1];
12822
12823         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12824                 return -EOPNOTSUPP;
12825
12826         if (!rdev->ops->stop_p2p_device)
12827                 return -EOPNOTSUPP;
12828
12829         cfg80211_stop_p2p_device(rdev, wdev);
12830
12831         return 0;
12832 }
12833
12834 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12835 {
12836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12837         struct wireless_dev *wdev = info->user_ptr[1];
12838         struct cfg80211_nan_conf conf = {};
12839         int err;
12840
12841         if (wdev->iftype != NL80211_IFTYPE_NAN)
12842                 return -EOPNOTSUPP;
12843
12844         if (wdev_running(wdev))
12845                 return -EEXIST;
12846
12847         if (rfkill_blocked(rdev->rfkill))
12848                 return -ERFKILL;
12849
12850         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12851                 return -EINVAL;
12852
12853         conf.master_pref =
12854                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12855
12856         if (info->attrs[NL80211_ATTR_BANDS]) {
12857                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12858
12859                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12860                         return -EOPNOTSUPP;
12861
12862                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12863                         return -EINVAL;
12864
12865                 conf.bands = bands;
12866         }
12867
12868         err = rdev_start_nan(rdev, wdev, &conf);
12869         if (err)
12870                 return err;
12871
12872         wdev->is_running = true;
12873         rdev->opencount++;
12874
12875         return 0;
12876 }
12877
12878 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12879 {
12880         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12881         struct wireless_dev *wdev = info->user_ptr[1];
12882
12883         if (wdev->iftype != NL80211_IFTYPE_NAN)
12884                 return -EOPNOTSUPP;
12885
12886         cfg80211_stop_nan(rdev, wdev);
12887
12888         return 0;
12889 }
12890
12891 static int validate_nan_filter(struct nlattr *filter_attr)
12892 {
12893         struct nlattr *attr;
12894         int len = 0, n_entries = 0, rem;
12895
12896         nla_for_each_nested(attr, filter_attr, rem) {
12897                 len += nla_len(attr);
12898                 n_entries++;
12899         }
12900
12901         if (len >= U8_MAX)
12902                 return -EINVAL;
12903
12904         return n_entries;
12905 }
12906
12907 static int handle_nan_filter(struct nlattr *attr_filter,
12908                              struct cfg80211_nan_func *func,
12909                              bool tx)
12910 {
12911         struct nlattr *attr;
12912         int n_entries, rem, i;
12913         struct cfg80211_nan_func_filter *filter;
12914
12915         n_entries = validate_nan_filter(attr_filter);
12916         if (n_entries < 0)
12917                 return n_entries;
12918
12919         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12920
12921         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12922         if (!filter)
12923                 return -ENOMEM;
12924
12925         i = 0;
12926         nla_for_each_nested(attr, attr_filter, rem) {
12927                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12928                 filter[i].len = nla_len(attr);
12929                 i++;
12930         }
12931         if (tx) {
12932                 func->num_tx_filters = n_entries;
12933                 func->tx_filters = filter;
12934         } else {
12935                 func->num_rx_filters = n_entries;
12936                 func->rx_filters = filter;
12937         }
12938
12939         return 0;
12940 }
12941
12942 static int nl80211_nan_add_func(struct sk_buff *skb,
12943                                 struct genl_info *info)
12944 {
12945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12946         struct wireless_dev *wdev = info->user_ptr[1];
12947         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12948         struct cfg80211_nan_func *func;
12949         struct sk_buff *msg = NULL;
12950         void *hdr = NULL;
12951         int err = 0;
12952
12953         if (wdev->iftype != NL80211_IFTYPE_NAN)
12954                 return -EOPNOTSUPP;
12955
12956         if (!wdev_running(wdev))
12957                 return -ENOTCONN;
12958
12959         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12960                 return -EINVAL;
12961
12962         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12963                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12964                                           nl80211_nan_func_policy,
12965                                           info->extack);
12966         if (err)
12967                 return err;
12968
12969         func = kzalloc(sizeof(*func), GFP_KERNEL);
12970         if (!func)
12971                 return -ENOMEM;
12972
12973         func->cookie = cfg80211_assign_cookie(rdev);
12974
12975         if (!tb[NL80211_NAN_FUNC_TYPE]) {
12976                 err = -EINVAL;
12977                 goto out;
12978         }
12979
12980
12981         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12982
12983         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12984                 err = -EINVAL;
12985                 goto out;
12986         }
12987
12988         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12989                sizeof(func->service_id));
12990
12991         func->close_range =
12992                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12993
12994         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12995                 func->serv_spec_info_len =
12996                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12997                 func->serv_spec_info =
12998                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12999                                 func->serv_spec_info_len,
13000                                 GFP_KERNEL);
13001                 if (!func->serv_spec_info) {
13002                         err = -ENOMEM;
13003                         goto out;
13004                 }
13005         }
13006
13007         if (tb[NL80211_NAN_FUNC_TTL])
13008                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13009
13010         switch (func->type) {
13011         case NL80211_NAN_FUNC_PUBLISH:
13012                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13013                         err = -EINVAL;
13014                         goto out;
13015                 }
13016
13017                 func->publish_type =
13018                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13019                 func->publish_bcast =
13020                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13021
13022                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13023                         func->publish_bcast) {
13024                         err = -EINVAL;
13025                         goto out;
13026                 }
13027                 break;
13028         case NL80211_NAN_FUNC_SUBSCRIBE:
13029                 func->subscribe_active =
13030                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13031                 break;
13032         case NL80211_NAN_FUNC_FOLLOW_UP:
13033                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13034                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13035                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13036                         err = -EINVAL;
13037                         goto out;
13038                 }
13039
13040                 func->followup_id =
13041                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13042                 func->followup_reqid =
13043                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13044                 memcpy(func->followup_dest.addr,
13045                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13046                        sizeof(func->followup_dest.addr));
13047                 if (func->ttl) {
13048                         err = -EINVAL;
13049                         goto out;
13050                 }
13051                 break;
13052         default:
13053                 err = -EINVAL;
13054                 goto out;
13055         }
13056
13057         if (tb[NL80211_NAN_FUNC_SRF]) {
13058                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13059
13060                 err = nla_parse_nested_deprecated(srf_tb,
13061                                                   NL80211_NAN_SRF_ATTR_MAX,
13062                                                   tb[NL80211_NAN_FUNC_SRF],
13063                                                   nl80211_nan_srf_policy,
13064                                                   info->extack);
13065                 if (err)
13066                         goto out;
13067
13068                 func->srf_include =
13069                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13070
13071                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13072                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13073                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13074                                 err = -EINVAL;
13075                                 goto out;
13076                         }
13077
13078                         func->srf_bf_len =
13079                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13080                         func->srf_bf =
13081                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13082                                         func->srf_bf_len, GFP_KERNEL);
13083                         if (!func->srf_bf) {
13084                                 err = -ENOMEM;
13085                                 goto out;
13086                         }
13087
13088                         func->srf_bf_idx =
13089                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13090                 } else {
13091                         struct nlattr *attr, *mac_attr =
13092                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13093                         int n_entries, rem, i = 0;
13094
13095                         if (!mac_attr) {
13096                                 err = -EINVAL;
13097                                 goto out;
13098                         }
13099
13100                         n_entries = validate_acl_mac_addrs(mac_attr);
13101                         if (n_entries <= 0) {
13102                                 err = -EINVAL;
13103                                 goto out;
13104                         }
13105
13106                         func->srf_num_macs = n_entries;
13107                         func->srf_macs =
13108                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13109                                         GFP_KERNEL);
13110                         if (!func->srf_macs) {
13111                                 err = -ENOMEM;
13112                                 goto out;
13113                         }
13114
13115                         nla_for_each_nested(attr, mac_attr, rem)
13116                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13117                                        sizeof(*func->srf_macs));
13118                 }
13119         }
13120
13121         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13122                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13123                                         func, true);
13124                 if (err)
13125                         goto out;
13126         }
13127
13128         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13129                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13130                                         func, false);
13131                 if (err)
13132                         goto out;
13133         }
13134
13135         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13136         if (!msg) {
13137                 err = -ENOMEM;
13138                 goto out;
13139         }
13140
13141         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13142                              NL80211_CMD_ADD_NAN_FUNCTION);
13143         /* This can't really happen - we just allocated 4KB */
13144         if (WARN_ON(!hdr)) {
13145                 err = -ENOMEM;
13146                 goto out;
13147         }
13148
13149         err = rdev_add_nan_func(rdev, wdev, func);
13150 out:
13151         if (err < 0) {
13152                 cfg80211_free_nan_func(func);
13153                 nlmsg_free(msg);
13154                 return err;
13155         }
13156
13157         /* propagate the instance id and cookie to userspace  */
13158         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13159                               NL80211_ATTR_PAD))
13160                 goto nla_put_failure;
13161
13162         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13163         if (!func_attr)
13164                 goto nla_put_failure;
13165
13166         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13167                        func->instance_id))
13168                 goto nla_put_failure;
13169
13170         nla_nest_end(msg, func_attr);
13171
13172         genlmsg_end(msg, hdr);
13173         return genlmsg_reply(msg, info);
13174
13175 nla_put_failure:
13176         nlmsg_free(msg);
13177         return -ENOBUFS;
13178 }
13179
13180 static int nl80211_nan_del_func(struct sk_buff *skb,
13181                                struct genl_info *info)
13182 {
13183         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13184         struct wireless_dev *wdev = info->user_ptr[1];
13185         u64 cookie;
13186
13187         if (wdev->iftype != NL80211_IFTYPE_NAN)
13188                 return -EOPNOTSUPP;
13189
13190         if (!wdev_running(wdev))
13191                 return -ENOTCONN;
13192
13193         if (!info->attrs[NL80211_ATTR_COOKIE])
13194                 return -EINVAL;
13195
13196         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13197
13198         rdev_del_nan_func(rdev, wdev, cookie);
13199
13200         return 0;
13201 }
13202
13203 static int nl80211_nan_change_config(struct sk_buff *skb,
13204                                      struct genl_info *info)
13205 {
13206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13207         struct wireless_dev *wdev = info->user_ptr[1];
13208         struct cfg80211_nan_conf conf = {};
13209         u32 changed = 0;
13210
13211         if (wdev->iftype != NL80211_IFTYPE_NAN)
13212                 return -EOPNOTSUPP;
13213
13214         if (!wdev_running(wdev))
13215                 return -ENOTCONN;
13216
13217         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13218                 conf.master_pref =
13219                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13220                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13221                         return -EINVAL;
13222
13223                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13224         }
13225
13226         if (info->attrs[NL80211_ATTR_BANDS]) {
13227                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13228
13229                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13230                         return -EOPNOTSUPP;
13231
13232                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13233                         return -EINVAL;
13234
13235                 conf.bands = bands;
13236                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13237         }
13238
13239         if (!changed)
13240                 return -EINVAL;
13241
13242         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13243 }
13244
13245 void cfg80211_nan_match(struct wireless_dev *wdev,
13246                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13247 {
13248         struct wiphy *wiphy = wdev->wiphy;
13249         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13250         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13251         struct sk_buff *msg;
13252         void *hdr;
13253
13254         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13255                 return;
13256
13257         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13258         if (!msg)
13259                 return;
13260
13261         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13262         if (!hdr) {
13263                 nlmsg_free(msg);
13264                 return;
13265         }
13266
13267         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13268             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13269                                          wdev->netdev->ifindex)) ||
13270             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13271                               NL80211_ATTR_PAD))
13272                 goto nla_put_failure;
13273
13274         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13275                               NL80211_ATTR_PAD) ||
13276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13277                 goto nla_put_failure;
13278
13279         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13280         if (!match_attr)
13281                 goto nla_put_failure;
13282
13283         local_func_attr = nla_nest_start_noflag(msg,
13284                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13285         if (!local_func_attr)
13286                 goto nla_put_failure;
13287
13288         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13289                 goto nla_put_failure;
13290
13291         nla_nest_end(msg, local_func_attr);
13292
13293         peer_func_attr = nla_nest_start_noflag(msg,
13294                                                NL80211_NAN_MATCH_FUNC_PEER);
13295         if (!peer_func_attr)
13296                 goto nla_put_failure;
13297
13298         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13299             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13300                 goto nla_put_failure;
13301
13302         if (match->info && match->info_len &&
13303             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13304                     match->info))
13305                 goto nla_put_failure;
13306
13307         nla_nest_end(msg, peer_func_attr);
13308         nla_nest_end(msg, match_attr);
13309         genlmsg_end(msg, hdr);
13310
13311         if (!wdev->owner_nlportid)
13312                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13313                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13314         else
13315                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13316                                 wdev->owner_nlportid);
13317
13318         return;
13319
13320 nla_put_failure:
13321         nlmsg_free(msg);
13322 }
13323 EXPORT_SYMBOL(cfg80211_nan_match);
13324
13325 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13326                                   u8 inst_id,
13327                                   enum nl80211_nan_func_term_reason reason,
13328                                   u64 cookie, gfp_t gfp)
13329 {
13330         struct wiphy *wiphy = wdev->wiphy;
13331         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13332         struct sk_buff *msg;
13333         struct nlattr *func_attr;
13334         void *hdr;
13335
13336         if (WARN_ON(!inst_id))
13337                 return;
13338
13339         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13340         if (!msg)
13341                 return;
13342
13343         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13344         if (!hdr) {
13345                 nlmsg_free(msg);
13346                 return;
13347         }
13348
13349         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13350             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13351                                          wdev->netdev->ifindex)) ||
13352             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13353                               NL80211_ATTR_PAD))
13354                 goto nla_put_failure;
13355
13356         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13357                               NL80211_ATTR_PAD))
13358                 goto nla_put_failure;
13359
13360         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13361         if (!func_attr)
13362                 goto nla_put_failure;
13363
13364         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13365             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13366                 goto nla_put_failure;
13367
13368         nla_nest_end(msg, func_attr);
13369         genlmsg_end(msg, hdr);
13370
13371         if (!wdev->owner_nlportid)
13372                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13373                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13374         else
13375                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13376                                 wdev->owner_nlportid);
13377
13378         return;
13379
13380 nla_put_failure:
13381         nlmsg_free(msg);
13382 }
13383 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13384
13385 static int nl80211_get_protocol_features(struct sk_buff *skb,
13386                                          struct genl_info *info)
13387 {
13388         void *hdr;
13389         struct sk_buff *msg;
13390
13391         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13392         if (!msg)
13393                 return -ENOMEM;
13394
13395         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13396                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13397         if (!hdr)
13398                 goto nla_put_failure;
13399
13400         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13401                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13402                 goto nla_put_failure;
13403
13404         genlmsg_end(msg, hdr);
13405         return genlmsg_reply(msg, info);
13406
13407  nla_put_failure:
13408         kfree_skb(msg);
13409         return -ENOBUFS;
13410 }
13411
13412 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13413 {
13414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13415         struct cfg80211_update_ft_ies_params ft_params;
13416         struct net_device *dev = info->user_ptr[1];
13417
13418         if (!rdev->ops->update_ft_ies)
13419                 return -EOPNOTSUPP;
13420
13421         if (!info->attrs[NL80211_ATTR_MDID] ||
13422             !info->attrs[NL80211_ATTR_IE])
13423                 return -EINVAL;
13424
13425         memset(&ft_params, 0, sizeof(ft_params));
13426         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13427         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13428         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13429
13430         return rdev_update_ft_ies(rdev, dev, &ft_params);
13431 }
13432
13433 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13434                                        struct genl_info *info)
13435 {
13436         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13437         struct wireless_dev *wdev = info->user_ptr[1];
13438         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13439         u16 duration;
13440         int ret;
13441
13442         if (!rdev->ops->crit_proto_start)
13443                 return -EOPNOTSUPP;
13444
13445         if (WARN_ON(!rdev->ops->crit_proto_stop))
13446                 return -EINVAL;
13447
13448         if (rdev->crit_proto_nlportid)
13449                 return -EBUSY;
13450
13451         /* determine protocol if provided */
13452         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13453                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13454
13455         if (proto >= NUM_NL80211_CRIT_PROTO)
13456                 return -EINVAL;
13457
13458         /* timeout must be provided */
13459         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13460                 return -EINVAL;
13461
13462         duration =
13463                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13464
13465         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13466         if (!ret)
13467                 rdev->crit_proto_nlportid = info->snd_portid;
13468
13469         return ret;
13470 }
13471
13472 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13473                                       struct genl_info *info)
13474 {
13475         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13476         struct wireless_dev *wdev = info->user_ptr[1];
13477
13478         if (!rdev->ops->crit_proto_stop)
13479                 return -EOPNOTSUPP;
13480
13481         if (rdev->crit_proto_nlportid) {
13482                 rdev->crit_proto_nlportid = 0;
13483                 rdev_crit_proto_stop(rdev, wdev);
13484         }
13485         return 0;
13486 }
13487
13488 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13489                                        struct nlattr *attr,
13490                                        struct netlink_ext_ack *extack)
13491 {
13492         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13493                 if (attr->nla_type & NLA_F_NESTED) {
13494                         NL_SET_ERR_MSG_ATTR(extack, attr,
13495                                             "unexpected nested data");
13496                         return -EINVAL;
13497                 }
13498
13499                 return 0;
13500         }
13501
13502         if (!(attr->nla_type & NLA_F_NESTED)) {
13503                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13504                 return -EINVAL;
13505         }
13506
13507         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13508 }
13509
13510 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13511 {
13512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13513         struct wireless_dev *wdev =
13514                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13515         int i, err;
13516         u32 vid, subcmd;
13517
13518         if (!rdev->wiphy.vendor_commands)
13519                 return -EOPNOTSUPP;
13520
13521         if (IS_ERR(wdev)) {
13522                 err = PTR_ERR(wdev);
13523                 if (err != -EINVAL)
13524                         return err;
13525                 wdev = NULL;
13526         } else if (wdev->wiphy != &rdev->wiphy) {
13527                 return -EINVAL;
13528         }
13529
13530         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13531             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13532                 return -EINVAL;
13533
13534         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13535         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13536         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13537                 const struct wiphy_vendor_command *vcmd;
13538                 void *data = NULL;
13539                 int len = 0;
13540
13541                 vcmd = &rdev->wiphy.vendor_commands[i];
13542
13543                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13544                         continue;
13545
13546                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13547                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13548                         if (!wdev)
13549                                 return -EINVAL;
13550                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13551                             !wdev->netdev)
13552                                 return -EINVAL;
13553
13554                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13555                                 if (!wdev_running(wdev))
13556                                         return -ENETDOWN;
13557                         }
13558                 } else {
13559                         wdev = NULL;
13560                 }
13561
13562                 if (!vcmd->doit)
13563                         return -EOPNOTSUPP;
13564
13565                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13566                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13567                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13568
13569                         err = nl80211_vendor_check_policy(vcmd,
13570                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13571                                         info->extack);
13572                         if (err)
13573                                 return err;
13574                 }
13575
13576                 rdev->cur_cmd_info = info;
13577                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13578                 rdev->cur_cmd_info = NULL;
13579                 return err;
13580         }
13581
13582         return -EOPNOTSUPP;
13583 }
13584
13585 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13586                                        struct netlink_callback *cb,
13587                                        struct cfg80211_registered_device **rdev,
13588                                        struct wireless_dev **wdev)
13589 {
13590         struct nlattr **attrbuf;
13591         u32 vid, subcmd;
13592         unsigned int i;
13593         int vcmd_idx = -1;
13594         int err;
13595         void *data = NULL;
13596         unsigned int data_len = 0;
13597
13598         if (cb->args[0]) {
13599                 /* subtract the 1 again here */
13600                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13601                 struct wireless_dev *tmp;
13602
13603                 if (!wiphy)
13604                         return -ENODEV;
13605                 *rdev = wiphy_to_rdev(wiphy);
13606                 *wdev = NULL;
13607
13608                 if (cb->args[1]) {
13609                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13610                                 if (tmp->identifier == cb->args[1] - 1) {
13611                                         *wdev = tmp;
13612                                         break;
13613                                 }
13614                         }
13615                 }
13616
13617                 /* keep rtnl locked in successful case */
13618                 return 0;
13619         }
13620
13621         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13622         if (!attrbuf)
13623                 return -ENOMEM;
13624
13625         err = nlmsg_parse_deprecated(cb->nlh,
13626                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13627                                      attrbuf, nl80211_fam.maxattr,
13628                                      nl80211_policy, NULL);
13629         if (err)
13630                 goto out;
13631
13632         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13633             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13634                 err = -EINVAL;
13635                 goto out;
13636         }
13637
13638         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13639         if (IS_ERR(*wdev))
13640                 *wdev = NULL;
13641
13642         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13643         if (IS_ERR(*rdev)) {
13644                 err = PTR_ERR(*rdev);
13645                 goto out;
13646         }
13647
13648         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13649         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13650
13651         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13652                 const struct wiphy_vendor_command *vcmd;
13653
13654                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13655
13656                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13657                         continue;
13658
13659                 if (!vcmd->dumpit) {
13660                         err = -EOPNOTSUPP;
13661                         goto out;
13662                 }
13663
13664                 vcmd_idx = i;
13665                 break;
13666         }
13667
13668         if (vcmd_idx < 0) {
13669                 err = -EOPNOTSUPP;
13670                 goto out;
13671         }
13672
13673         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13674                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13675                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13676
13677                 err = nl80211_vendor_check_policy(
13678                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13679                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13680                                 cb->extack);
13681                 if (err)
13682                         goto out;
13683         }
13684
13685         /* 0 is the first index - add 1 to parse only once */
13686         cb->args[0] = (*rdev)->wiphy_idx + 1;
13687         /* add 1 to know if it was NULL */
13688         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13689         cb->args[2] = vcmd_idx;
13690         cb->args[3] = (unsigned long)data;
13691         cb->args[4] = data_len;
13692
13693         /* keep rtnl locked in successful case */
13694         err = 0;
13695 out:
13696         kfree(attrbuf);
13697         return err;
13698 }
13699
13700 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13701                                    struct netlink_callback *cb)
13702 {
13703         struct cfg80211_registered_device *rdev;
13704         struct wireless_dev *wdev;
13705         unsigned int vcmd_idx;
13706         const struct wiphy_vendor_command *vcmd;
13707         void *data;
13708         int data_len;
13709         int err;
13710         struct nlattr *vendor_data;
13711
13712         rtnl_lock();
13713         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13714         if (err)
13715                 goto out;
13716
13717         vcmd_idx = cb->args[2];
13718         data = (void *)cb->args[3];
13719         data_len = cb->args[4];
13720         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13721
13722         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13723                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13724                 if (!wdev) {
13725                         err = -EINVAL;
13726                         goto out;
13727                 }
13728                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13729                     !wdev->netdev) {
13730                         err = -EINVAL;
13731                         goto out;
13732                 }
13733
13734                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13735                         if (!wdev_running(wdev)) {
13736                                 err = -ENETDOWN;
13737                                 goto out;
13738                         }
13739                 }
13740         }
13741
13742         while (1) {
13743                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13744                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13745                                            NL80211_CMD_VENDOR);
13746                 if (!hdr)
13747                         break;
13748
13749                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13750                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13751                                                wdev_id(wdev),
13752                                                NL80211_ATTR_PAD))) {
13753                         genlmsg_cancel(skb, hdr);
13754                         break;
13755                 }
13756
13757                 vendor_data = nla_nest_start_noflag(skb,
13758                                                     NL80211_ATTR_VENDOR_DATA);
13759                 if (!vendor_data) {
13760                         genlmsg_cancel(skb, hdr);
13761                         break;
13762                 }
13763
13764                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13765                                    (unsigned long *)&cb->args[5]);
13766                 nla_nest_end(skb, vendor_data);
13767
13768                 if (err == -ENOBUFS || err == -ENOENT) {
13769                         genlmsg_cancel(skb, hdr);
13770                         break;
13771                 } else if (err <= 0) {
13772                         genlmsg_cancel(skb, hdr);
13773                         goto out;
13774                 }
13775
13776                 genlmsg_end(skb, hdr);
13777         }
13778
13779         err = skb->len;
13780  out:
13781         rtnl_unlock();
13782         return err;
13783 }
13784
13785 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13786                                            enum nl80211_commands cmd,
13787                                            enum nl80211_attrs attr,
13788                                            int approxlen)
13789 {
13790         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13791
13792         if (WARN_ON(!rdev->cur_cmd_info))
13793                 return NULL;
13794
13795         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13796                                            rdev->cur_cmd_info->snd_portid,
13797                                            rdev->cur_cmd_info->snd_seq,
13798                                            cmd, attr, NULL, GFP_KERNEL);
13799 }
13800 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13801
13802 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13803 {
13804         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13805         void *hdr = ((void **)skb->cb)[1];
13806         struct nlattr *data = ((void **)skb->cb)[2];
13807
13808         /* clear CB data for netlink core to own from now on */
13809         memset(skb->cb, 0, sizeof(skb->cb));
13810
13811         if (WARN_ON(!rdev->cur_cmd_info)) {
13812                 kfree_skb(skb);
13813                 return -EINVAL;
13814         }
13815
13816         nla_nest_end(skb, data);
13817         genlmsg_end(skb, hdr);
13818         return genlmsg_reply(skb, rdev->cur_cmd_info);
13819 }
13820 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13821
13822 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13823 {
13824         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13825
13826         if (WARN_ON(!rdev->cur_cmd_info))
13827                 return 0;
13828
13829         return rdev->cur_cmd_info->snd_portid;
13830 }
13831 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13832
13833 static int nl80211_set_qos_map(struct sk_buff *skb,
13834                                struct genl_info *info)
13835 {
13836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13837         struct cfg80211_qos_map *qos_map = NULL;
13838         struct net_device *dev = info->user_ptr[1];
13839         u8 *pos, len, num_des, des_len, des;
13840         int ret;
13841
13842         if (!rdev->ops->set_qos_map)
13843                 return -EOPNOTSUPP;
13844
13845         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13846                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13847                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13848
13849                 if (len % 2)
13850                         return -EINVAL;
13851
13852                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13853                 if (!qos_map)
13854                         return -ENOMEM;
13855
13856                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13857                 if (num_des) {
13858                         des_len = num_des *
13859                                 sizeof(struct cfg80211_dscp_exception);
13860                         memcpy(qos_map->dscp_exception, pos, des_len);
13861                         qos_map->num_des = num_des;
13862                         for (des = 0; des < num_des; des++) {
13863                                 if (qos_map->dscp_exception[des].up > 7) {
13864                                         kfree(qos_map);
13865                                         return -EINVAL;
13866                                 }
13867                         }
13868                         pos += des_len;
13869                 }
13870                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13871         }
13872
13873         wdev_lock(dev->ieee80211_ptr);
13874         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13875         if (!ret)
13876                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13877         wdev_unlock(dev->ieee80211_ptr);
13878
13879         kfree(qos_map);
13880         return ret;
13881 }
13882
13883 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13884 {
13885         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13886         struct net_device *dev = info->user_ptr[1];
13887         struct wireless_dev *wdev = dev->ieee80211_ptr;
13888         const u8 *peer;
13889         u8 tsid, up;
13890         u16 admitted_time = 0;
13891         int err;
13892
13893         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13894                 return -EOPNOTSUPP;
13895
13896         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13897             !info->attrs[NL80211_ATTR_USER_PRIO])
13898                 return -EINVAL;
13899
13900         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13901         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13902
13903         /* WMM uses TIDs 0-7 even for TSPEC */
13904         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13905                 /* TODO: handle 802.11 TSPEC/admission control
13906                  * need more attributes for that (e.g. BA session requirement);
13907                  * change the WMM adminssion test above to allow both then
13908                  */
13909                 return -EINVAL;
13910         }
13911
13912         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13913
13914         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13915                 admitted_time =
13916                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13917                 if (!admitted_time)
13918                         return -EINVAL;
13919         }
13920
13921         wdev_lock(wdev);
13922         switch (wdev->iftype) {
13923         case NL80211_IFTYPE_STATION:
13924         case NL80211_IFTYPE_P2P_CLIENT:
13925                 if (wdev->current_bss)
13926                         break;
13927                 err = -ENOTCONN;
13928                 goto out;
13929         default:
13930                 err = -EOPNOTSUPP;
13931                 goto out;
13932         }
13933
13934         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13935
13936  out:
13937         wdev_unlock(wdev);
13938         return err;
13939 }
13940
13941 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13942 {
13943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13944         struct net_device *dev = info->user_ptr[1];
13945         struct wireless_dev *wdev = dev->ieee80211_ptr;
13946         const u8 *peer;
13947         u8 tsid;
13948         int err;
13949
13950         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13951                 return -EINVAL;
13952
13953         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13954         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13955
13956         wdev_lock(wdev);
13957         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13958         wdev_unlock(wdev);
13959
13960         return err;
13961 }
13962
13963 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13964                                        struct genl_info *info)
13965 {
13966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13967         struct net_device *dev = info->user_ptr[1];
13968         struct wireless_dev *wdev = dev->ieee80211_ptr;
13969         struct cfg80211_chan_def chandef = {};
13970         const u8 *addr;
13971         u8 oper_class;
13972         int err;
13973
13974         if (!rdev->ops->tdls_channel_switch ||
13975             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13976                 return -EOPNOTSUPP;
13977
13978         switch (dev->ieee80211_ptr->iftype) {
13979         case NL80211_IFTYPE_STATION:
13980         case NL80211_IFTYPE_P2P_CLIENT:
13981                 break;
13982         default:
13983                 return -EOPNOTSUPP;
13984         }
13985
13986         if (!info->attrs[NL80211_ATTR_MAC] ||
13987             !info->attrs[NL80211_ATTR_OPER_CLASS])
13988                 return -EINVAL;
13989
13990         err = nl80211_parse_chandef(rdev, info, &chandef);
13991         if (err)
13992                 return err;
13993
13994         /*
13995          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13996          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13997          * specification is not defined for them.
13998          */
13999         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14000             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14001             chandef.width != NL80211_CHAN_WIDTH_20)
14002                 return -EINVAL;
14003
14004         /* we will be active on the TDLS link */
14005         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14006                                            wdev->iftype))
14007                 return -EINVAL;
14008
14009         /* don't allow switching to DFS channels */
14010         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14011                 return -EINVAL;
14012
14013         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14014         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14015
14016         wdev_lock(wdev);
14017         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14018         wdev_unlock(wdev);
14019
14020         return err;
14021 }
14022
14023 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14024                                               struct genl_info *info)
14025 {
14026         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14027         struct net_device *dev = info->user_ptr[1];
14028         struct wireless_dev *wdev = dev->ieee80211_ptr;
14029         const u8 *addr;
14030
14031         if (!rdev->ops->tdls_channel_switch ||
14032             !rdev->ops->tdls_cancel_channel_switch ||
14033             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14034                 return -EOPNOTSUPP;
14035
14036         switch (dev->ieee80211_ptr->iftype) {
14037         case NL80211_IFTYPE_STATION:
14038         case NL80211_IFTYPE_P2P_CLIENT:
14039                 break;
14040         default:
14041                 return -EOPNOTSUPP;
14042         }
14043
14044         if (!info->attrs[NL80211_ATTR_MAC])
14045                 return -EINVAL;
14046
14047         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14048
14049         wdev_lock(wdev);
14050         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14051         wdev_unlock(wdev);
14052
14053         return 0;
14054 }
14055
14056 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14057                                             struct genl_info *info)
14058 {
14059         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14060         struct net_device *dev = info->user_ptr[1];
14061         struct wireless_dev *wdev = dev->ieee80211_ptr;
14062         const struct nlattr *nla;
14063         bool enabled;
14064
14065         if (!rdev->ops->set_multicast_to_unicast)
14066                 return -EOPNOTSUPP;
14067
14068         if (wdev->iftype != NL80211_IFTYPE_AP &&
14069             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14070                 return -EOPNOTSUPP;
14071
14072         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14073         enabled = nla_get_flag(nla);
14074
14075         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14076 }
14077
14078 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14079 {
14080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14081         struct net_device *dev = info->user_ptr[1];
14082         struct wireless_dev *wdev = dev->ieee80211_ptr;
14083         struct cfg80211_pmk_conf pmk_conf = {};
14084         int ret;
14085
14086         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14087             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14088                 return -EOPNOTSUPP;
14089
14090         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14091                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14092                 return -EOPNOTSUPP;
14093
14094         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14095                 return -EINVAL;
14096
14097         wdev_lock(wdev);
14098         if (!wdev->current_bss) {
14099                 ret = -ENOTCONN;
14100                 goto out;
14101         }
14102
14103         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14104         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14105                 ret = -EINVAL;
14106                 goto out;
14107         }
14108
14109         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14110         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14111         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14112             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14113                 ret = -EINVAL;
14114                 goto out;
14115         }
14116
14117         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14118                 pmk_conf.pmk_r0_name =
14119                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14120
14121         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14122 out:
14123         wdev_unlock(wdev);
14124         return ret;
14125 }
14126
14127 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14128 {
14129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14130         struct net_device *dev = info->user_ptr[1];
14131         struct wireless_dev *wdev = dev->ieee80211_ptr;
14132         const u8 *aa;
14133         int ret;
14134
14135         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14136             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14137                 return -EOPNOTSUPP;
14138
14139         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14140                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14141                 return -EOPNOTSUPP;
14142
14143         if (!info->attrs[NL80211_ATTR_MAC])
14144                 return -EINVAL;
14145
14146         wdev_lock(wdev);
14147         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14148         ret = rdev_del_pmk(rdev, dev, aa);
14149         wdev_unlock(wdev);
14150
14151         return ret;
14152 }
14153
14154 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14155 {
14156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14157         struct net_device *dev = info->user_ptr[1];
14158         struct cfg80211_external_auth_params params;
14159
14160         if (!rdev->ops->external_auth)
14161                 return -EOPNOTSUPP;
14162
14163         if (!info->attrs[NL80211_ATTR_SSID] &&
14164             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14165             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14166                 return -EINVAL;
14167
14168         if (!info->attrs[NL80211_ATTR_BSSID])
14169                 return -EINVAL;
14170
14171         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14172                 return -EINVAL;
14173
14174         memset(&params, 0, sizeof(params));
14175
14176         if (info->attrs[NL80211_ATTR_SSID]) {
14177                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14178                 if (params.ssid.ssid_len == 0)
14179                         return -EINVAL;
14180                 memcpy(params.ssid.ssid,
14181                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14182                        params.ssid.ssid_len);
14183         }
14184
14185         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14186                ETH_ALEN);
14187
14188         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14189
14190         if (info->attrs[NL80211_ATTR_PMKID])
14191                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14192
14193         return rdev_external_auth(rdev, dev, &params);
14194 }
14195
14196 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14197 {
14198         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14200         struct net_device *dev = info->user_ptr[1];
14201         struct wireless_dev *wdev = dev->ieee80211_ptr;
14202         const u8 *buf;
14203         size_t len;
14204         u8 *dest;
14205         u16 proto;
14206         bool noencrypt;
14207         u64 cookie = 0;
14208         int err;
14209
14210         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14211                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14212                 return -EOPNOTSUPP;
14213
14214         if (!rdev->ops->tx_control_port)
14215                 return -EOPNOTSUPP;
14216
14217         if (!info->attrs[NL80211_ATTR_FRAME] ||
14218             !info->attrs[NL80211_ATTR_MAC] ||
14219             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14220                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14221                 return -EINVAL;
14222         }
14223
14224         wdev_lock(wdev);
14225
14226         switch (wdev->iftype) {
14227         case NL80211_IFTYPE_AP:
14228         case NL80211_IFTYPE_P2P_GO:
14229         case NL80211_IFTYPE_MESH_POINT:
14230                 break;
14231         case NL80211_IFTYPE_ADHOC:
14232         case NL80211_IFTYPE_STATION:
14233         case NL80211_IFTYPE_P2P_CLIENT:
14234                 if (wdev->current_bss)
14235                         break;
14236                 err = -ENOTCONN;
14237                 goto out;
14238         default:
14239                 err = -EOPNOTSUPP;
14240                 goto out;
14241         }
14242
14243         wdev_unlock(wdev);
14244
14245         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14246         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14247         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14248         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14249         noencrypt =
14250                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14251
14252         err = rdev_tx_control_port(rdev, dev, buf, len,
14253                                    dest, cpu_to_be16(proto), noencrypt,
14254                                    dont_wait_for_ack ? NULL : &cookie);
14255         if (!err && !dont_wait_for_ack)
14256                 nl_set_extack_cookie_u64(info->extack, cookie);
14257         return err;
14258  out:
14259         wdev_unlock(wdev);
14260         return err;
14261 }
14262
14263 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14264                                            struct genl_info *info)
14265 {
14266         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14267         struct net_device *dev = info->user_ptr[1];
14268         struct wireless_dev *wdev = dev->ieee80211_ptr;
14269         struct cfg80211_ftm_responder_stats ftm_stats = {};
14270         struct sk_buff *msg;
14271         void *hdr;
14272         struct nlattr *ftm_stats_attr;
14273         int err;
14274
14275         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14276                 return -EOPNOTSUPP;
14277
14278         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14279         if (err)
14280                 return err;
14281
14282         if (!ftm_stats.filled)
14283                 return -ENODATA;
14284
14285         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14286         if (!msg)
14287                 return -ENOMEM;
14288
14289         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14290                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14291         if (!hdr)
14292                 goto nla_put_failure;
14293
14294         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14295                 goto nla_put_failure;
14296
14297         ftm_stats_attr = nla_nest_start_noflag(msg,
14298                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14299         if (!ftm_stats_attr)
14300                 goto nla_put_failure;
14301
14302 #define SET_FTM(field, name, type)                                       \
14303         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14304             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14305                              ftm_stats.field))                           \
14306                 goto nla_put_failure; } while (0)
14307 #define SET_FTM_U64(field, name)                                         \
14308         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14309             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14310                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14311                 goto nla_put_failure; } while (0)
14312
14313         SET_FTM(success_num, SUCCESS_NUM, u32);
14314         SET_FTM(partial_num, PARTIAL_NUM, u32);
14315         SET_FTM(failed_num, FAILED_NUM, u32);
14316         SET_FTM(asap_num, ASAP_NUM, u32);
14317         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14318         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14319         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14320         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14321         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14322 #undef SET_FTM
14323
14324         nla_nest_end(msg, ftm_stats_attr);
14325
14326         genlmsg_end(msg, hdr);
14327         return genlmsg_reply(msg, info);
14328
14329 nla_put_failure:
14330         nlmsg_free(msg);
14331         return -ENOBUFS;
14332 }
14333
14334 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14335 {
14336         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14337         struct cfg80211_update_owe_info owe_info;
14338         struct net_device *dev = info->user_ptr[1];
14339
14340         if (!rdev->ops->update_owe_info)
14341                 return -EOPNOTSUPP;
14342
14343         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14344             !info->attrs[NL80211_ATTR_MAC])
14345                 return -EINVAL;
14346
14347         memset(&owe_info, 0, sizeof(owe_info));
14348         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14349         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14350
14351         if (info->attrs[NL80211_ATTR_IE]) {
14352                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14353                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14354         }
14355
14356         return rdev_update_owe_info(rdev, dev, &owe_info);
14357 }
14358
14359 static int nl80211_probe_mesh_link(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 station_info sinfo = {};
14365         const u8 *buf;
14366         size_t len;
14367         u8 *dest;
14368         int err;
14369
14370         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14371                 return -EOPNOTSUPP;
14372
14373         if (!info->attrs[NL80211_ATTR_MAC] ||
14374             !info->attrs[NL80211_ATTR_FRAME]) {
14375                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14376                 return -EINVAL;
14377         }
14378
14379         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14380                 return -EOPNOTSUPP;
14381
14382         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14383         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14384         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14385
14386         if (len < sizeof(struct ethhdr))
14387                 return -EINVAL;
14388
14389         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14390             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14391                 return -EINVAL;
14392
14393         err = rdev_get_station(rdev, dev, dest, &sinfo);
14394         if (err)
14395                 return err;
14396
14397         cfg80211_sinfo_release_content(&sinfo);
14398
14399         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14400 }
14401
14402 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14403                           struct nlattr *attrs[], struct net_device *dev,
14404                           struct cfg80211_tid_cfg *tid_conf,
14405                           struct genl_info *info, const u8 *peer)
14406 {
14407         struct netlink_ext_ack *extack = info->extack;
14408         u64 mask;
14409         int err;
14410
14411         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14412                 return -EINVAL;
14413
14414         tid_conf->config_override =
14415                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14416         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14417
14418         if (tid_conf->config_override) {
14419                 if (rdev->ops->reset_tid_config) {
14420                         err = rdev_reset_tid_config(rdev, dev, peer,
14421                                                     tid_conf->tids);
14422                         if (err)
14423                                 return err;
14424                 } else {
14425                         return -EINVAL;
14426                 }
14427         }
14428
14429         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14430                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14431                 tid_conf->noack =
14432                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14433         }
14434
14435         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14436                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14437                 tid_conf->retry_short =
14438                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14439
14440                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14441                         return -EINVAL;
14442         }
14443
14444         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14445                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14446                 tid_conf->retry_long =
14447                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14448
14449                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14450                         return -EINVAL;
14451         }
14452
14453         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14454                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14455                 tid_conf->ampdu =
14456                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14457         }
14458
14459         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14460                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14461                 tid_conf->rtscts =
14462                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14463         }
14464
14465         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14466                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14467                 tid_conf->amsdu =
14468                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14469         }
14470
14471         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14472                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14473
14474                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14475
14476                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14477                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14478                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14479                                                     &tid_conf->txrate_mask, dev);
14480                         if (err)
14481                                 return err;
14482
14483                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14484                 }
14485                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14486         }
14487
14488         if (peer)
14489                 mask = rdev->wiphy.tid_config_support.peer;
14490         else
14491                 mask = rdev->wiphy.tid_config_support.vif;
14492
14493         if (tid_conf->mask & ~mask) {
14494                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14495                 return -ENOTSUPP;
14496         }
14497
14498         return 0;
14499 }
14500
14501 static int nl80211_set_tid_config(struct sk_buff *skb,
14502                                   struct genl_info *info)
14503 {
14504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14505         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14506         struct net_device *dev = info->user_ptr[1];
14507         struct cfg80211_tid_config *tid_config;
14508         struct nlattr *tid;
14509         int conf_idx = 0, rem_conf;
14510         int ret = -EINVAL;
14511         u32 num_conf = 0;
14512
14513         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14514                 return -EINVAL;
14515
14516         if (!rdev->ops->set_tid_config)
14517                 return -EOPNOTSUPP;
14518
14519         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14520                             rem_conf)
14521                 num_conf++;
14522
14523         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14524                              GFP_KERNEL);
14525         if (!tid_config)
14526                 return -ENOMEM;
14527
14528         tid_config->n_tid_conf = num_conf;
14529
14530         if (info->attrs[NL80211_ATTR_MAC])
14531                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14532
14533         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14534                             rem_conf) {
14535                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14536                                        tid, NULL, NULL);
14537
14538                 if (ret)
14539                         goto bad_tid_conf;
14540
14541                 ret = parse_tid_conf(rdev, attrs, dev,
14542                                      &tid_config->tid_conf[conf_idx],
14543                                      info, tid_config->peer);
14544                 if (ret)
14545                         goto bad_tid_conf;
14546
14547                 conf_idx++;
14548         }
14549
14550         ret = rdev_set_tid_config(rdev, dev, tid_config);
14551
14552 bad_tid_conf:
14553         kfree(tid_config);
14554         return ret;
14555 }
14556
14557 #define NL80211_FLAG_NEED_WIPHY         0x01
14558 #define NL80211_FLAG_NEED_NETDEV        0x02
14559 #define NL80211_FLAG_NEED_RTNL          0x04
14560 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14561 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14562                                          NL80211_FLAG_CHECK_NETDEV_UP)
14563 #define NL80211_FLAG_NEED_WDEV          0x10
14564 /* If a netdev is associated, it must be UP, P2P must be started */
14565 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14566                                          NL80211_FLAG_CHECK_NETDEV_UP)
14567 #define NL80211_FLAG_CLEAR_SKB          0x20
14568
14569 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14570                             struct genl_info *info)
14571 {
14572         struct cfg80211_registered_device *rdev;
14573         struct wireless_dev *wdev;
14574         struct net_device *dev;
14575         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14576
14577         if (rtnl)
14578                 rtnl_lock();
14579
14580         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14581                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14582                 if (IS_ERR(rdev)) {
14583                         if (rtnl)
14584                                 rtnl_unlock();
14585                         return PTR_ERR(rdev);
14586                 }
14587                 info->user_ptr[0] = rdev;
14588         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14589                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14590                 ASSERT_RTNL();
14591
14592                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14593                                                   info->attrs);
14594                 if (IS_ERR(wdev)) {
14595                         if (rtnl)
14596                                 rtnl_unlock();
14597                         return PTR_ERR(wdev);
14598                 }
14599
14600                 dev = wdev->netdev;
14601                 rdev = wiphy_to_rdev(wdev->wiphy);
14602
14603                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14604                         if (!dev) {
14605                                 if (rtnl)
14606                                         rtnl_unlock();
14607                                 return -EINVAL;
14608                         }
14609
14610                         info->user_ptr[1] = dev;
14611                 } else {
14612                         info->user_ptr[1] = wdev;
14613                 }
14614
14615                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14616                     !wdev_running(wdev)) {
14617                         if (rtnl)
14618                                 rtnl_unlock();
14619                         return -ENETDOWN;
14620                 }
14621
14622                 if (dev)
14623                         dev_hold(dev);
14624
14625                 info->user_ptr[0] = rdev;
14626         }
14627
14628         return 0;
14629 }
14630
14631 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14632                               struct genl_info *info)
14633 {
14634         if (info->user_ptr[1]) {
14635                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14636                         struct wireless_dev *wdev = info->user_ptr[1];
14637
14638                         if (wdev->netdev)
14639                                 dev_put(wdev->netdev);
14640                 } else {
14641                         dev_put(info->user_ptr[1]);
14642                 }
14643         }
14644
14645         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14646                 rtnl_unlock();
14647
14648         /* If needed, clear the netlink message payload from the SKB
14649          * as it might contain key data that shouldn't stick around on
14650          * the heap after the SKB is freed. The netlink message header
14651          * is still needed for further processing, so leave it intact.
14652          */
14653         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14654                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14655
14656                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14657         }
14658 }
14659
14660 static const struct genl_ops nl80211_ops[] = {
14661         {
14662                 .cmd = NL80211_CMD_GET_WIPHY,
14663                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14664                 .doit = nl80211_get_wiphy,
14665                 .dumpit = nl80211_dump_wiphy,
14666                 .done = nl80211_dump_wiphy_done,
14667                 /* can be retrieved by unprivileged users */
14668                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14669                                   NL80211_FLAG_NEED_RTNL,
14670         },
14671 };
14672
14673 static const struct genl_small_ops nl80211_small_ops[] = {
14674         {
14675                 .cmd = NL80211_CMD_SET_WIPHY,
14676                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14677                 .doit = nl80211_set_wiphy,
14678                 .flags = GENL_UNS_ADMIN_PERM,
14679                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14680         },
14681         {
14682                 .cmd = NL80211_CMD_GET_INTERFACE,
14683                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14684                 .doit = nl80211_get_interface,
14685                 .dumpit = nl80211_dump_interface,
14686                 /* can be retrieved by unprivileged users */
14687                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14688                                   NL80211_FLAG_NEED_RTNL,
14689         },
14690         {
14691                 .cmd = NL80211_CMD_SET_INTERFACE,
14692                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14693                 .doit = nl80211_set_interface,
14694                 .flags = GENL_UNS_ADMIN_PERM,
14695                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14696                                   NL80211_FLAG_NEED_RTNL,
14697         },
14698         {
14699                 .cmd = NL80211_CMD_NEW_INTERFACE,
14700                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14701                 .doit = nl80211_new_interface,
14702                 .flags = GENL_UNS_ADMIN_PERM,
14703                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14704                                   NL80211_FLAG_NEED_RTNL,
14705         },
14706         {
14707                 .cmd = NL80211_CMD_DEL_INTERFACE,
14708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14709                 .doit = nl80211_del_interface,
14710                 .flags = GENL_UNS_ADMIN_PERM,
14711                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14712                                   NL80211_FLAG_NEED_RTNL,
14713         },
14714         {
14715                 .cmd = NL80211_CMD_GET_KEY,
14716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14717                 .doit = nl80211_get_key,
14718                 .flags = GENL_UNS_ADMIN_PERM,
14719                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14720                                   NL80211_FLAG_NEED_RTNL,
14721         },
14722         {
14723                 .cmd = NL80211_CMD_SET_KEY,
14724                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14725                 .doit = nl80211_set_key,
14726                 .flags = GENL_UNS_ADMIN_PERM,
14727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14728                                   NL80211_FLAG_NEED_RTNL |
14729                                   NL80211_FLAG_CLEAR_SKB,
14730         },
14731         {
14732                 .cmd = NL80211_CMD_NEW_KEY,
14733                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14734                 .doit = nl80211_new_key,
14735                 .flags = GENL_UNS_ADMIN_PERM,
14736                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14737                                   NL80211_FLAG_NEED_RTNL |
14738                                   NL80211_FLAG_CLEAR_SKB,
14739         },
14740         {
14741                 .cmd = NL80211_CMD_DEL_KEY,
14742                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14743                 .doit = nl80211_del_key,
14744                 .flags = GENL_UNS_ADMIN_PERM,
14745                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14746                                   NL80211_FLAG_NEED_RTNL,
14747         },
14748         {
14749                 .cmd = NL80211_CMD_SET_BEACON,
14750                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14751                 .flags = GENL_UNS_ADMIN_PERM,
14752                 .doit = nl80211_set_beacon,
14753                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14754                                   NL80211_FLAG_NEED_RTNL,
14755         },
14756         {
14757                 .cmd = NL80211_CMD_START_AP,
14758                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14759                 .flags = GENL_UNS_ADMIN_PERM,
14760                 .doit = nl80211_start_ap,
14761                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14762                                   NL80211_FLAG_NEED_RTNL,
14763         },
14764         {
14765                 .cmd = NL80211_CMD_STOP_AP,
14766                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14767                 .flags = GENL_UNS_ADMIN_PERM,
14768                 .doit = nl80211_stop_ap,
14769                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14770                                   NL80211_FLAG_NEED_RTNL,
14771         },
14772         {
14773                 .cmd = NL80211_CMD_GET_STATION,
14774                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14775                 .doit = nl80211_get_station,
14776                 .dumpit = nl80211_dump_station,
14777                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14778                                   NL80211_FLAG_NEED_RTNL,
14779         },
14780         {
14781                 .cmd = NL80211_CMD_SET_STATION,
14782                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14783                 .doit = nl80211_set_station,
14784                 .flags = GENL_UNS_ADMIN_PERM,
14785                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14786                                   NL80211_FLAG_NEED_RTNL,
14787         },
14788         {
14789                 .cmd = NL80211_CMD_NEW_STATION,
14790                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14791                 .doit = nl80211_new_station,
14792                 .flags = GENL_UNS_ADMIN_PERM,
14793                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14794                                   NL80211_FLAG_NEED_RTNL,
14795         },
14796         {
14797                 .cmd = NL80211_CMD_DEL_STATION,
14798                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14799                 .doit = nl80211_del_station,
14800                 .flags = GENL_UNS_ADMIN_PERM,
14801                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14802                                   NL80211_FLAG_NEED_RTNL,
14803         },
14804         {
14805                 .cmd = NL80211_CMD_GET_MPATH,
14806                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14807                 .doit = nl80211_get_mpath,
14808                 .dumpit = nl80211_dump_mpath,
14809                 .flags = GENL_UNS_ADMIN_PERM,
14810                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14811                                   NL80211_FLAG_NEED_RTNL,
14812         },
14813         {
14814                 .cmd = NL80211_CMD_GET_MPP,
14815                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14816                 .doit = nl80211_get_mpp,
14817                 .dumpit = nl80211_dump_mpp,
14818                 .flags = GENL_UNS_ADMIN_PERM,
14819                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14820                                   NL80211_FLAG_NEED_RTNL,
14821         },
14822         {
14823                 .cmd = NL80211_CMD_SET_MPATH,
14824                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14825                 .doit = nl80211_set_mpath,
14826                 .flags = GENL_UNS_ADMIN_PERM,
14827                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14828                                   NL80211_FLAG_NEED_RTNL,
14829         },
14830         {
14831                 .cmd = NL80211_CMD_NEW_MPATH,
14832                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14833                 .doit = nl80211_new_mpath,
14834                 .flags = GENL_UNS_ADMIN_PERM,
14835                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14836                                   NL80211_FLAG_NEED_RTNL,
14837         },
14838         {
14839                 .cmd = NL80211_CMD_DEL_MPATH,
14840                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14841                 .doit = nl80211_del_mpath,
14842                 .flags = GENL_UNS_ADMIN_PERM,
14843                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14844                                   NL80211_FLAG_NEED_RTNL,
14845         },
14846         {
14847                 .cmd = NL80211_CMD_SET_BSS,
14848                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14849                 .doit = nl80211_set_bss,
14850                 .flags = GENL_UNS_ADMIN_PERM,
14851                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14852                                   NL80211_FLAG_NEED_RTNL,
14853         },
14854         {
14855                 .cmd = NL80211_CMD_GET_REG,
14856                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14857                 .doit = nl80211_get_reg_do,
14858                 .dumpit = nl80211_get_reg_dump,
14859                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14860                 /* can be retrieved by unprivileged users */
14861         },
14862 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14863         {
14864                 .cmd = NL80211_CMD_SET_REG,
14865                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14866                 .doit = nl80211_set_reg,
14867                 .flags = GENL_ADMIN_PERM,
14868                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14869         },
14870 #endif
14871         {
14872                 .cmd = NL80211_CMD_REQ_SET_REG,
14873                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14874                 .doit = nl80211_req_set_reg,
14875                 .flags = GENL_ADMIN_PERM,
14876         },
14877         {
14878                 .cmd = NL80211_CMD_RELOAD_REGDB,
14879                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14880                 .doit = nl80211_reload_regdb,
14881                 .flags = GENL_ADMIN_PERM,
14882         },
14883         {
14884                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14885                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14886                 .doit = nl80211_get_mesh_config,
14887                 /* can be retrieved by unprivileged users */
14888                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14889                                   NL80211_FLAG_NEED_RTNL,
14890         },
14891         {
14892                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14893                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14894                 .doit = nl80211_update_mesh_config,
14895                 .flags = GENL_UNS_ADMIN_PERM,
14896                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14897                                   NL80211_FLAG_NEED_RTNL,
14898         },
14899         {
14900                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14901                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14902                 .doit = nl80211_trigger_scan,
14903                 .flags = GENL_UNS_ADMIN_PERM,
14904                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14905                                   NL80211_FLAG_NEED_RTNL,
14906         },
14907         {
14908                 .cmd = NL80211_CMD_ABORT_SCAN,
14909                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14910                 .doit = nl80211_abort_scan,
14911                 .flags = GENL_UNS_ADMIN_PERM,
14912                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14913                                   NL80211_FLAG_NEED_RTNL,
14914         },
14915         {
14916                 .cmd = NL80211_CMD_GET_SCAN,
14917                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14918                 .dumpit = nl80211_dump_scan,
14919         },
14920         {
14921                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14922                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14923                 .doit = nl80211_start_sched_scan,
14924                 .flags = GENL_UNS_ADMIN_PERM,
14925                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14926                                   NL80211_FLAG_NEED_RTNL,
14927         },
14928         {
14929                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14930                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14931                 .doit = nl80211_stop_sched_scan,
14932                 .flags = GENL_UNS_ADMIN_PERM,
14933                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14934                                   NL80211_FLAG_NEED_RTNL,
14935         },
14936         {
14937                 .cmd = NL80211_CMD_AUTHENTICATE,
14938                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14939                 .doit = nl80211_authenticate,
14940                 .flags = GENL_UNS_ADMIN_PERM,
14941                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14942                                   NL80211_FLAG_NEED_RTNL |
14943                                   NL80211_FLAG_CLEAR_SKB,
14944         },
14945         {
14946                 .cmd = NL80211_CMD_ASSOCIATE,
14947                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14948                 .doit = nl80211_associate,
14949                 .flags = GENL_UNS_ADMIN_PERM,
14950                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14951                                   NL80211_FLAG_NEED_RTNL |
14952                                   NL80211_FLAG_CLEAR_SKB,
14953         },
14954         {
14955                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14956                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14957                 .doit = nl80211_deauthenticate,
14958                 .flags = GENL_UNS_ADMIN_PERM,
14959                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14960                                   NL80211_FLAG_NEED_RTNL,
14961         },
14962         {
14963                 .cmd = NL80211_CMD_DISASSOCIATE,
14964                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14965                 .doit = nl80211_disassociate,
14966                 .flags = GENL_UNS_ADMIN_PERM,
14967                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14968                                   NL80211_FLAG_NEED_RTNL,
14969         },
14970         {
14971                 .cmd = NL80211_CMD_JOIN_IBSS,
14972                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14973                 .doit = nl80211_join_ibss,
14974                 .flags = GENL_UNS_ADMIN_PERM,
14975                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14976                                   NL80211_FLAG_NEED_RTNL,
14977         },
14978         {
14979                 .cmd = NL80211_CMD_LEAVE_IBSS,
14980                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14981                 .doit = nl80211_leave_ibss,
14982                 .flags = GENL_UNS_ADMIN_PERM,
14983                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14984                                   NL80211_FLAG_NEED_RTNL,
14985         },
14986 #ifdef CONFIG_NL80211_TESTMODE
14987         {
14988                 .cmd = NL80211_CMD_TESTMODE,
14989                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14990                 .doit = nl80211_testmode_do,
14991                 .dumpit = nl80211_testmode_dump,
14992                 .flags = GENL_UNS_ADMIN_PERM,
14993                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14994                                   NL80211_FLAG_NEED_RTNL,
14995         },
14996 #endif
14997         {
14998                 .cmd = NL80211_CMD_CONNECT,
14999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15000                 .doit = nl80211_connect,
15001                 .flags = GENL_UNS_ADMIN_PERM,
15002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15003                                   NL80211_FLAG_NEED_RTNL |
15004                                   NL80211_FLAG_CLEAR_SKB,
15005         },
15006         {
15007                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009                 .doit = nl80211_update_connect_params,
15010                 .flags = GENL_ADMIN_PERM,
15011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15012                                   NL80211_FLAG_NEED_RTNL |
15013                                   NL80211_FLAG_CLEAR_SKB,
15014         },
15015         {
15016                 .cmd = NL80211_CMD_DISCONNECT,
15017                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15018                 .doit = nl80211_disconnect,
15019                 .flags = GENL_UNS_ADMIN_PERM,
15020                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15021                                   NL80211_FLAG_NEED_RTNL,
15022         },
15023         {
15024                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15025                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15026                 .doit = nl80211_wiphy_netns,
15027                 .flags = GENL_UNS_ADMIN_PERM,
15028                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15029                                   NL80211_FLAG_NEED_RTNL,
15030         },
15031         {
15032                 .cmd = NL80211_CMD_GET_SURVEY,
15033                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15034                 .dumpit = nl80211_dump_survey,
15035         },
15036         {
15037                 .cmd = NL80211_CMD_SET_PMKSA,
15038                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15039                 .doit = nl80211_setdel_pmksa,
15040                 .flags = GENL_UNS_ADMIN_PERM,
15041                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15042                                   NL80211_FLAG_NEED_RTNL |
15043                                   NL80211_FLAG_CLEAR_SKB,
15044         },
15045         {
15046                 .cmd = NL80211_CMD_DEL_PMKSA,
15047                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15048                 .doit = nl80211_setdel_pmksa,
15049                 .flags = GENL_UNS_ADMIN_PERM,
15050                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15051                                   NL80211_FLAG_NEED_RTNL,
15052         },
15053         {
15054                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15055                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15056                 .doit = nl80211_flush_pmksa,
15057                 .flags = GENL_UNS_ADMIN_PERM,
15058                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15059                                   NL80211_FLAG_NEED_RTNL,
15060         },
15061         {
15062                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15063                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15064                 .doit = nl80211_remain_on_channel,
15065                 .flags = GENL_UNS_ADMIN_PERM,
15066                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15067                                   NL80211_FLAG_NEED_RTNL,
15068         },
15069         {
15070                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15071                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15072                 .doit = nl80211_cancel_remain_on_channel,
15073                 .flags = GENL_UNS_ADMIN_PERM,
15074                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15075                                   NL80211_FLAG_NEED_RTNL,
15076         },
15077         {
15078                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15079                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15080                 .doit = nl80211_set_tx_bitrate_mask,
15081                 .flags = GENL_UNS_ADMIN_PERM,
15082                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15083                                   NL80211_FLAG_NEED_RTNL,
15084         },
15085         {
15086                 .cmd = NL80211_CMD_REGISTER_FRAME,
15087                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15088                 .doit = nl80211_register_mgmt,
15089                 .flags = GENL_UNS_ADMIN_PERM,
15090                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15091                                   NL80211_FLAG_NEED_RTNL,
15092         },
15093         {
15094                 .cmd = NL80211_CMD_FRAME,
15095                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15096                 .doit = nl80211_tx_mgmt,
15097                 .flags = GENL_UNS_ADMIN_PERM,
15098                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15099                                   NL80211_FLAG_NEED_RTNL,
15100         },
15101         {
15102                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15103                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15104                 .doit = nl80211_tx_mgmt_cancel_wait,
15105                 .flags = GENL_UNS_ADMIN_PERM,
15106                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15107                                   NL80211_FLAG_NEED_RTNL,
15108         },
15109         {
15110                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15111                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15112                 .doit = nl80211_set_power_save,
15113                 .flags = GENL_UNS_ADMIN_PERM,
15114                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15115                                   NL80211_FLAG_NEED_RTNL,
15116         },
15117         {
15118                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15119                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15120                 .doit = nl80211_get_power_save,
15121                 /* can be retrieved by unprivileged users */
15122                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15123                                   NL80211_FLAG_NEED_RTNL,
15124         },
15125         {
15126                 .cmd = NL80211_CMD_SET_CQM,
15127                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15128                 .doit = nl80211_set_cqm,
15129                 .flags = GENL_UNS_ADMIN_PERM,
15130                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15131                                   NL80211_FLAG_NEED_RTNL,
15132         },
15133         {
15134                 .cmd = NL80211_CMD_SET_CHANNEL,
15135                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15136                 .doit = nl80211_set_channel,
15137                 .flags = GENL_UNS_ADMIN_PERM,
15138                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15139                                   NL80211_FLAG_NEED_RTNL,
15140         },
15141         {
15142                 .cmd = NL80211_CMD_SET_WDS_PEER,
15143                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15144                 .doit = nl80211_set_wds_peer,
15145                 .flags = GENL_UNS_ADMIN_PERM,
15146                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15147                                   NL80211_FLAG_NEED_RTNL,
15148         },
15149         {
15150                 .cmd = NL80211_CMD_JOIN_MESH,
15151                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15152                 .doit = nl80211_join_mesh,
15153                 .flags = GENL_UNS_ADMIN_PERM,
15154                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15155                                   NL80211_FLAG_NEED_RTNL,
15156         },
15157         {
15158                 .cmd = NL80211_CMD_LEAVE_MESH,
15159                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15160                 .doit = nl80211_leave_mesh,
15161                 .flags = GENL_UNS_ADMIN_PERM,
15162                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15163                                   NL80211_FLAG_NEED_RTNL,
15164         },
15165         {
15166                 .cmd = NL80211_CMD_JOIN_OCB,
15167                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15168                 .doit = nl80211_join_ocb,
15169                 .flags = GENL_UNS_ADMIN_PERM,
15170                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15171                                   NL80211_FLAG_NEED_RTNL,
15172         },
15173         {
15174                 .cmd = NL80211_CMD_LEAVE_OCB,
15175                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15176                 .doit = nl80211_leave_ocb,
15177                 .flags = GENL_UNS_ADMIN_PERM,
15178                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15179                                   NL80211_FLAG_NEED_RTNL,
15180         },
15181 #ifdef CONFIG_PM
15182         {
15183                 .cmd = NL80211_CMD_GET_WOWLAN,
15184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15185                 .doit = nl80211_get_wowlan,
15186                 /* can be retrieved by unprivileged users */
15187                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15188                                   NL80211_FLAG_NEED_RTNL,
15189         },
15190         {
15191                 .cmd = NL80211_CMD_SET_WOWLAN,
15192                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15193                 .doit = nl80211_set_wowlan,
15194                 .flags = GENL_UNS_ADMIN_PERM,
15195                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15196                                   NL80211_FLAG_NEED_RTNL,
15197         },
15198 #endif
15199         {
15200                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15201                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15202                 .doit = nl80211_set_rekey_data,
15203                 .flags = GENL_UNS_ADMIN_PERM,
15204                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15205                                   NL80211_FLAG_NEED_RTNL |
15206                                   NL80211_FLAG_CLEAR_SKB,
15207         },
15208         {
15209                 .cmd = NL80211_CMD_TDLS_MGMT,
15210                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15211                 .doit = nl80211_tdls_mgmt,
15212                 .flags = GENL_UNS_ADMIN_PERM,
15213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15214                                   NL80211_FLAG_NEED_RTNL,
15215         },
15216         {
15217                 .cmd = NL80211_CMD_TDLS_OPER,
15218                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15219                 .doit = nl80211_tdls_oper,
15220                 .flags = GENL_UNS_ADMIN_PERM,
15221                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15222                                   NL80211_FLAG_NEED_RTNL,
15223         },
15224         {
15225                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15226                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15227                 .doit = nl80211_register_unexpected_frame,
15228                 .flags = GENL_UNS_ADMIN_PERM,
15229                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15230                                   NL80211_FLAG_NEED_RTNL,
15231         },
15232         {
15233                 .cmd = NL80211_CMD_PROBE_CLIENT,
15234                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15235                 .doit = nl80211_probe_client,
15236                 .flags = GENL_UNS_ADMIN_PERM,
15237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15238                                   NL80211_FLAG_NEED_RTNL,
15239         },
15240         {
15241                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15242                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15243                 .doit = nl80211_register_beacons,
15244                 .flags = GENL_UNS_ADMIN_PERM,
15245                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15246                                   NL80211_FLAG_NEED_RTNL,
15247         },
15248         {
15249                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15250                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15251                 .doit = nl80211_set_noack_map,
15252                 .flags = GENL_UNS_ADMIN_PERM,
15253                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15254                                   NL80211_FLAG_NEED_RTNL,
15255         },
15256         {
15257                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15258                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15259                 .doit = nl80211_start_p2p_device,
15260                 .flags = GENL_UNS_ADMIN_PERM,
15261                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15262                                   NL80211_FLAG_NEED_RTNL,
15263         },
15264         {
15265                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15266                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15267                 .doit = nl80211_stop_p2p_device,
15268                 .flags = GENL_UNS_ADMIN_PERM,
15269                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15270                                   NL80211_FLAG_NEED_RTNL,
15271         },
15272         {
15273                 .cmd = NL80211_CMD_START_NAN,
15274                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15275                 .doit = nl80211_start_nan,
15276                 .flags = GENL_ADMIN_PERM,
15277                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15278                                   NL80211_FLAG_NEED_RTNL,
15279         },
15280         {
15281                 .cmd = NL80211_CMD_STOP_NAN,
15282                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15283                 .doit = nl80211_stop_nan,
15284                 .flags = GENL_ADMIN_PERM,
15285                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15286                                   NL80211_FLAG_NEED_RTNL,
15287         },
15288         {
15289                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15290                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15291                 .doit = nl80211_nan_add_func,
15292                 .flags = GENL_ADMIN_PERM,
15293                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15294                                   NL80211_FLAG_NEED_RTNL,
15295         },
15296         {
15297                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15298                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15299                 .doit = nl80211_nan_del_func,
15300                 .flags = GENL_ADMIN_PERM,
15301                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15302                                   NL80211_FLAG_NEED_RTNL,
15303         },
15304         {
15305                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15306                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15307                 .doit = nl80211_nan_change_config,
15308                 .flags = GENL_ADMIN_PERM,
15309                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15310                                   NL80211_FLAG_NEED_RTNL,
15311         },
15312         {
15313                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15314                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15315                 .doit = nl80211_set_mcast_rate,
15316                 .flags = GENL_UNS_ADMIN_PERM,
15317                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15318                                   NL80211_FLAG_NEED_RTNL,
15319         },
15320         {
15321                 .cmd = NL80211_CMD_SET_MAC_ACL,
15322                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15323                 .doit = nl80211_set_mac_acl,
15324                 .flags = GENL_UNS_ADMIN_PERM,
15325                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15326                                   NL80211_FLAG_NEED_RTNL,
15327         },
15328         {
15329                 .cmd = NL80211_CMD_RADAR_DETECT,
15330                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15331                 .doit = nl80211_start_radar_detection,
15332                 .flags = GENL_UNS_ADMIN_PERM,
15333                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15334                                   NL80211_FLAG_NEED_RTNL,
15335         },
15336         {
15337                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15338                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15339                 .doit = nl80211_get_protocol_features,
15340         },
15341         {
15342                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15343                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15344                 .doit = nl80211_update_ft_ies,
15345                 .flags = GENL_UNS_ADMIN_PERM,
15346                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15347                                   NL80211_FLAG_NEED_RTNL,
15348         },
15349         {
15350                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15351                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15352                 .doit = nl80211_crit_protocol_start,
15353                 .flags = GENL_UNS_ADMIN_PERM,
15354                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15355                                   NL80211_FLAG_NEED_RTNL,
15356         },
15357         {
15358                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15359                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15360                 .doit = nl80211_crit_protocol_stop,
15361                 .flags = GENL_UNS_ADMIN_PERM,
15362                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15363                                   NL80211_FLAG_NEED_RTNL,
15364         },
15365         {
15366                 .cmd = NL80211_CMD_GET_COALESCE,
15367                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15368                 .doit = nl80211_get_coalesce,
15369                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15370                                   NL80211_FLAG_NEED_RTNL,
15371         },
15372         {
15373                 .cmd = NL80211_CMD_SET_COALESCE,
15374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15375                 .doit = nl80211_set_coalesce,
15376                 .flags = GENL_UNS_ADMIN_PERM,
15377                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15378                                   NL80211_FLAG_NEED_RTNL,
15379         },
15380         {
15381                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15382                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15383                 .doit = nl80211_channel_switch,
15384                 .flags = GENL_UNS_ADMIN_PERM,
15385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15386                                   NL80211_FLAG_NEED_RTNL,
15387         },
15388         {
15389                 .cmd = NL80211_CMD_VENDOR,
15390                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15391                 .doit = nl80211_vendor_cmd,
15392                 .dumpit = nl80211_vendor_cmd_dump,
15393                 .flags = GENL_UNS_ADMIN_PERM,
15394                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15395                                   NL80211_FLAG_NEED_RTNL |
15396                                   NL80211_FLAG_CLEAR_SKB,
15397         },
15398         {
15399                 .cmd = NL80211_CMD_SET_QOS_MAP,
15400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15401                 .doit = nl80211_set_qos_map,
15402                 .flags = GENL_UNS_ADMIN_PERM,
15403                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15404                                   NL80211_FLAG_NEED_RTNL,
15405         },
15406         {
15407                 .cmd = NL80211_CMD_ADD_TX_TS,
15408                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15409                 .doit = nl80211_add_tx_ts,
15410                 .flags = GENL_UNS_ADMIN_PERM,
15411                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15412                                   NL80211_FLAG_NEED_RTNL,
15413         },
15414         {
15415                 .cmd = NL80211_CMD_DEL_TX_TS,
15416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15417                 .doit = nl80211_del_tx_ts,
15418                 .flags = GENL_UNS_ADMIN_PERM,
15419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15420                                   NL80211_FLAG_NEED_RTNL,
15421         },
15422         {
15423                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15424                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15425                 .doit = nl80211_tdls_channel_switch,
15426                 .flags = GENL_UNS_ADMIN_PERM,
15427                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15428                                   NL80211_FLAG_NEED_RTNL,
15429         },
15430         {
15431                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15432                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15433                 .doit = nl80211_tdls_cancel_channel_switch,
15434                 .flags = GENL_UNS_ADMIN_PERM,
15435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15436                                   NL80211_FLAG_NEED_RTNL,
15437         },
15438         {
15439                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15440                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15441                 .doit = nl80211_set_multicast_to_unicast,
15442                 .flags = GENL_UNS_ADMIN_PERM,
15443                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15444                                   NL80211_FLAG_NEED_RTNL,
15445         },
15446         {
15447                 .cmd = NL80211_CMD_SET_PMK,
15448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15449                 .doit = nl80211_set_pmk,
15450                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15451                                   NL80211_FLAG_NEED_RTNL |
15452                                   NL80211_FLAG_CLEAR_SKB,
15453         },
15454         {
15455                 .cmd = NL80211_CMD_DEL_PMK,
15456                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15457                 .doit = nl80211_del_pmk,
15458                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15459                                   NL80211_FLAG_NEED_RTNL,
15460         },
15461         {
15462                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15463                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15464                 .doit = nl80211_external_auth,
15465                 .flags = GENL_ADMIN_PERM,
15466                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15467                                   NL80211_FLAG_NEED_RTNL,
15468         },
15469         {
15470                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15471                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15472                 .doit = nl80211_tx_control_port,
15473                 .flags = GENL_UNS_ADMIN_PERM,
15474                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15475                                   NL80211_FLAG_NEED_RTNL,
15476         },
15477         {
15478                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15479                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15480                 .doit = nl80211_get_ftm_responder_stats,
15481                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15482                                   NL80211_FLAG_NEED_RTNL,
15483         },
15484         {
15485                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15486                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15487                 .doit = nl80211_pmsr_start,
15488                 .flags = GENL_UNS_ADMIN_PERM,
15489                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15490                                   NL80211_FLAG_NEED_RTNL,
15491         },
15492         {
15493                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15495                 .doit = nl80211_notify_radar_detection,
15496                 .flags = GENL_UNS_ADMIN_PERM,
15497                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15498                                   NL80211_FLAG_NEED_RTNL,
15499         },
15500         {
15501                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15502                 .doit = nl80211_update_owe_info,
15503                 .flags = GENL_ADMIN_PERM,
15504                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15505                                   NL80211_FLAG_NEED_RTNL,
15506         },
15507         {
15508                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15509                 .doit = nl80211_probe_mesh_link,
15510                 .flags = GENL_UNS_ADMIN_PERM,
15511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15512                                   NL80211_FLAG_NEED_RTNL,
15513         },
15514         {
15515                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15516                 .doit = nl80211_set_tid_config,
15517                 .flags = GENL_UNS_ADMIN_PERM,
15518                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15519                                   NL80211_FLAG_NEED_RTNL,
15520         },
15521 };
15522
15523 static struct genl_family nl80211_fam __ro_after_init = {
15524         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15525         .hdrsize = 0,                   /* no private header */
15526         .version = 1,                   /* no particular meaning now */
15527         .maxattr = NL80211_ATTR_MAX,
15528         .policy = nl80211_policy,
15529         .netnsok = true,
15530         .pre_doit = nl80211_pre_doit,
15531         .post_doit = nl80211_post_doit,
15532         .module = THIS_MODULE,
15533         .ops = nl80211_ops,
15534         .n_ops = ARRAY_SIZE(nl80211_ops),
15535         .small_ops = nl80211_small_ops,
15536         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15537         .mcgrps = nl80211_mcgrps,
15538         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15539         .parallel_ops = true,
15540 };
15541
15542 /* notification functions */
15543
15544 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15545                           enum nl80211_commands cmd)
15546 {
15547         struct sk_buff *msg;
15548         struct nl80211_dump_wiphy_state state = {};
15549
15550         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15551                 cmd != NL80211_CMD_DEL_WIPHY);
15552
15553         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15554         if (!msg)
15555                 return;
15556
15557         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15558                 nlmsg_free(msg);
15559                 return;
15560         }
15561
15562         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15563                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15564 }
15565
15566 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15567                                 struct wireless_dev *wdev,
15568                                 enum nl80211_commands cmd)
15569 {
15570         struct sk_buff *msg;
15571
15572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15573         if (!msg)
15574                 return;
15575
15576         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15577                 nlmsg_free(msg);
15578                 return;
15579         }
15580
15581         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15582                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15583 }
15584
15585 static int nl80211_add_scan_req(struct sk_buff *msg,
15586                                 struct cfg80211_registered_device *rdev)
15587 {
15588         struct cfg80211_scan_request *req = rdev->scan_req;
15589         struct nlattr *nest;
15590         int i;
15591         struct cfg80211_scan_info *info;
15592
15593         if (WARN_ON(!req))
15594                 return 0;
15595
15596         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15597         if (!nest)
15598                 goto nla_put_failure;
15599         for (i = 0; i < req->n_ssids; i++) {
15600                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15601                         goto nla_put_failure;
15602         }
15603         nla_nest_end(msg, nest);
15604
15605         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15606                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15607                 if (!nest)
15608                         goto nla_put_failure;
15609                 for (i = 0; i < req->n_channels; i++) {
15610                         if (nla_put_u32(msg, i,
15611                                    ieee80211_channel_to_khz(req->channels[i])))
15612                                 goto nla_put_failure;
15613                 }
15614                 nla_nest_end(msg, nest);
15615         } else {
15616                 nest = nla_nest_start_noflag(msg,
15617                                              NL80211_ATTR_SCAN_FREQUENCIES);
15618                 if (!nest)
15619                         goto nla_put_failure;
15620                 for (i = 0; i < req->n_channels; i++) {
15621                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15622                                 goto nla_put_failure;
15623                 }
15624                 nla_nest_end(msg, nest);
15625         }
15626
15627         if (req->ie &&
15628             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15629                 goto nla_put_failure;
15630
15631         if (req->flags &&
15632             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15633                 goto nla_put_failure;
15634
15635         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15636                 &rdev->scan_req->info;
15637         if (info->scan_start_tsf &&
15638             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15639                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15640              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15641                      info->tsf_bssid)))
15642                 goto nla_put_failure;
15643
15644         return 0;
15645  nla_put_failure:
15646         return -ENOBUFS;
15647 }
15648
15649 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15650                                  struct cfg80211_registered_device *rdev,
15651                                  struct wireless_dev *wdev,
15652                                  u32 portid, u32 seq, int flags,
15653                                  u32 cmd)
15654 {
15655         void *hdr;
15656
15657         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15658         if (!hdr)
15659                 return -1;
15660
15661         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15662             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15663                                          wdev->netdev->ifindex)) ||
15664             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15665                               NL80211_ATTR_PAD))
15666                 goto nla_put_failure;
15667
15668         /* ignore errors and send incomplete event anyway */
15669         nl80211_add_scan_req(msg, rdev);
15670
15671         genlmsg_end(msg, hdr);
15672         return 0;
15673
15674  nla_put_failure:
15675         genlmsg_cancel(msg, hdr);
15676         return -EMSGSIZE;
15677 }
15678
15679 static int
15680 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15681                             struct cfg80211_sched_scan_request *req, u32 cmd)
15682 {
15683         void *hdr;
15684
15685         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15686         if (!hdr)
15687                 return -1;
15688
15689         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15690                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15691             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15692             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15693                               NL80211_ATTR_PAD))
15694                 goto nla_put_failure;
15695
15696         genlmsg_end(msg, hdr);
15697         return 0;
15698
15699  nla_put_failure:
15700         genlmsg_cancel(msg, hdr);
15701         return -EMSGSIZE;
15702 }
15703
15704 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15705                              struct wireless_dev *wdev)
15706 {
15707         struct sk_buff *msg;
15708
15709         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15710         if (!msg)
15711                 return;
15712
15713         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15714                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15715                 nlmsg_free(msg);
15716                 return;
15717         }
15718
15719         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15720                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15721 }
15722
15723 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15724                                        struct wireless_dev *wdev, bool aborted)
15725 {
15726         struct sk_buff *msg;
15727
15728         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15729         if (!msg)
15730                 return NULL;
15731
15732         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15733                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15734                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15735                 nlmsg_free(msg);
15736                 return NULL;
15737         }
15738
15739         return msg;
15740 }
15741
15742 /* send message created by nl80211_build_scan_msg() */
15743 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15744                            struct sk_buff *msg)
15745 {
15746         if (!msg)
15747                 return;
15748
15749         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15750                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15751 }
15752
15753 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15754 {
15755         struct sk_buff *msg;
15756
15757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15758         if (!msg)
15759                 return;
15760
15761         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15762                 nlmsg_free(msg);
15763                 return;
15764         }
15765
15766         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15767                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15768 }
15769
15770 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15771                                           struct regulatory_request *request)
15772 {
15773         /* Userspace can always count this one always being set */
15774         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15775                 goto nla_put_failure;
15776
15777         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15778                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15779                                NL80211_REGDOM_TYPE_WORLD))
15780                         goto nla_put_failure;
15781         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15782                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15783                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15784                         goto nla_put_failure;
15785         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15786                    request->intersect) {
15787                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15788                                NL80211_REGDOM_TYPE_INTERSECTION))
15789                         goto nla_put_failure;
15790         } else {
15791                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15792                                NL80211_REGDOM_TYPE_COUNTRY) ||
15793                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15794                                    request->alpha2))
15795                         goto nla_put_failure;
15796         }
15797
15798         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15799                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15800
15801                 if (wiphy &&
15802                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15803                         goto nla_put_failure;
15804
15805                 if (wiphy &&
15806                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15807                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15808                         goto nla_put_failure;
15809         }
15810
15811         return true;
15812
15813 nla_put_failure:
15814         return false;
15815 }
15816
15817 /*
15818  * This can happen on global regulatory changes or device specific settings
15819  * based on custom regulatory domains.
15820  */
15821 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15822                                      struct regulatory_request *request)
15823 {
15824         struct sk_buff *msg;
15825         void *hdr;
15826
15827         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15828         if (!msg)
15829                 return;
15830
15831         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15832         if (!hdr)
15833                 goto nla_put_failure;
15834
15835         if (!nl80211_reg_change_event_fill(msg, request))
15836                 goto nla_put_failure;
15837
15838         genlmsg_end(msg, hdr);
15839
15840         rcu_read_lock();
15841         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15842                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15843         rcu_read_unlock();
15844
15845         return;
15846
15847 nla_put_failure:
15848         nlmsg_free(msg);
15849 }
15850
15851 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15852                                     struct net_device *netdev,
15853                                     const u8 *buf, size_t len,
15854                                     enum nl80211_commands cmd, gfp_t gfp,
15855                                     int uapsd_queues, const u8 *req_ies,
15856                                     size_t req_ies_len)
15857 {
15858         struct sk_buff *msg;
15859         void *hdr;
15860
15861         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15862         if (!msg)
15863                 return;
15864
15865         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15866         if (!hdr) {
15867                 nlmsg_free(msg);
15868                 return;
15869         }
15870
15871         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15872             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15873             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15874             (req_ies &&
15875              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15876                 goto nla_put_failure;
15877
15878         if (uapsd_queues >= 0) {
15879                 struct nlattr *nla_wmm =
15880                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15881                 if (!nla_wmm)
15882                         goto nla_put_failure;
15883
15884                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15885                                uapsd_queues))
15886                         goto nla_put_failure;
15887
15888                 nla_nest_end(msg, nla_wmm);
15889         }
15890
15891         genlmsg_end(msg, hdr);
15892
15893         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15894                                 NL80211_MCGRP_MLME, gfp);
15895         return;
15896
15897  nla_put_failure:
15898         nlmsg_free(msg);
15899 }
15900
15901 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15902                           struct net_device *netdev, const u8 *buf,
15903                           size_t len, gfp_t gfp)
15904 {
15905         nl80211_send_mlme_event(rdev, netdev, buf, len,
15906                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15907 }
15908
15909 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15910                            struct net_device *netdev, const u8 *buf,
15911                            size_t len, gfp_t gfp, int uapsd_queues,
15912                            const u8 *req_ies, size_t req_ies_len)
15913 {
15914         nl80211_send_mlme_event(rdev, netdev, buf, len,
15915                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15916                                 req_ies, req_ies_len);
15917 }
15918
15919 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15920                          struct net_device *netdev, const u8 *buf,
15921                          size_t len, gfp_t gfp)
15922 {
15923         nl80211_send_mlme_event(rdev, netdev, buf, len,
15924                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15925 }
15926
15927 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15928                            struct net_device *netdev, const u8 *buf,
15929                            size_t len, gfp_t gfp)
15930 {
15931         nl80211_send_mlme_event(rdev, netdev, buf, len,
15932                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15933 }
15934
15935 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15936                                   size_t len)
15937 {
15938         struct wireless_dev *wdev = dev->ieee80211_ptr;
15939         struct wiphy *wiphy = wdev->wiphy;
15940         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15941         const struct ieee80211_mgmt *mgmt = (void *)buf;
15942         u32 cmd;
15943
15944         if (WARN_ON(len < 2))
15945                 return;
15946
15947         if (ieee80211_is_deauth(mgmt->frame_control)) {
15948                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15949         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15950                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15951         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15952                 if (wdev->unprot_beacon_reported &&
15953                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15954                         return;
15955                 cmd = NL80211_CMD_UNPROT_BEACON;
15956                 wdev->unprot_beacon_reported = jiffies;
15957         } else {
15958                 return;
15959         }
15960
15961         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15962         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15963                                 NULL, 0);
15964 }
15965 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15966
15967 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15968                                       struct net_device *netdev, int cmd,
15969                                       const u8 *addr, gfp_t gfp)
15970 {
15971         struct sk_buff *msg;
15972         void *hdr;
15973
15974         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15975         if (!msg)
15976                 return;
15977
15978         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15979         if (!hdr) {
15980                 nlmsg_free(msg);
15981                 return;
15982         }
15983
15984         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15985             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15986             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15987             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15988                 goto nla_put_failure;
15989
15990         genlmsg_end(msg, hdr);
15991
15992         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15993                                 NL80211_MCGRP_MLME, gfp);
15994         return;
15995
15996  nla_put_failure:
15997         nlmsg_free(msg);
15998 }
15999
16000 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16001                                struct net_device *netdev, const u8 *addr,
16002                                gfp_t gfp)
16003 {
16004         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16005                                   addr, gfp);
16006 }
16007
16008 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16009                                 struct net_device *netdev, const u8 *addr,
16010                                 gfp_t gfp)
16011 {
16012         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16013                                   addr, gfp);
16014 }
16015
16016 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16017                                  struct net_device *netdev,
16018                                  struct cfg80211_connect_resp_params *cr,
16019                                  gfp_t gfp)
16020 {
16021         struct sk_buff *msg;
16022         void *hdr;
16023
16024         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16025                         cr->fils.kek_len + cr->fils.pmk_len +
16026                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16027         if (!msg)
16028                 return;
16029
16030         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16031         if (!hdr) {
16032                 nlmsg_free(msg);
16033                 return;
16034         }
16035
16036         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16037             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16038             (cr->bssid &&
16039              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16040             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16041                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16042                         cr->status) ||
16043             (cr->status < 0 &&
16044              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16045               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16046                           cr->timeout_reason))) ||
16047             (cr->req_ie &&
16048              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16049             (cr->resp_ie &&
16050              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16051                      cr->resp_ie)) ||
16052             (cr->fils.update_erp_next_seq_num &&
16053              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16054                          cr->fils.erp_next_seq_num)) ||
16055             (cr->status == WLAN_STATUS_SUCCESS &&
16056              ((cr->fils.kek &&
16057                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16058                        cr->fils.kek)) ||
16059               (cr->fils.pmk &&
16060                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16061               (cr->fils.pmkid &&
16062                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16063                 goto nla_put_failure;
16064
16065         genlmsg_end(msg, hdr);
16066
16067         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16068                                 NL80211_MCGRP_MLME, gfp);
16069         return;
16070
16071  nla_put_failure:
16072         nlmsg_free(msg);
16073 }
16074
16075 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16076                          struct net_device *netdev,
16077                          struct cfg80211_roam_info *info, gfp_t gfp)
16078 {
16079         struct sk_buff *msg;
16080         void *hdr;
16081         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16082
16083         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16084                         info->fils.kek_len + info->fils.pmk_len +
16085                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16086         if (!msg)
16087                 return;
16088
16089         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16090         if (!hdr) {
16091                 nlmsg_free(msg);
16092                 return;
16093         }
16094
16095         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16096             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16097             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16098             (info->req_ie &&
16099              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16100                      info->req_ie)) ||
16101             (info->resp_ie &&
16102              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16103                      info->resp_ie)) ||
16104             (info->fils.update_erp_next_seq_num &&
16105              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16106                          info->fils.erp_next_seq_num)) ||
16107             (info->fils.kek &&
16108              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16109                      info->fils.kek)) ||
16110             (info->fils.pmk &&
16111              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16112             (info->fils.pmkid &&
16113              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16114                 goto nla_put_failure;
16115
16116         genlmsg_end(msg, hdr);
16117
16118         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16119                                 NL80211_MCGRP_MLME, gfp);
16120         return;
16121
16122  nla_put_failure:
16123         nlmsg_free(msg);
16124 }
16125
16126 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16127                                   struct net_device *netdev, const u8 *bssid)
16128 {
16129         struct sk_buff *msg;
16130         void *hdr;
16131
16132         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16133         if (!msg)
16134                 return;
16135
16136         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16137         if (!hdr) {
16138                 nlmsg_free(msg);
16139                 return;
16140         }
16141
16142         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16143             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16144             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16145                 goto nla_put_failure;
16146
16147         genlmsg_end(msg, hdr);
16148
16149         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16150                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16151         return;
16152
16153  nla_put_failure:
16154         nlmsg_free(msg);
16155 }
16156
16157 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16158                                struct net_device *netdev, u16 reason,
16159                                const u8 *ie, size_t ie_len, bool from_ap)
16160 {
16161         struct sk_buff *msg;
16162         void *hdr;
16163
16164         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16165         if (!msg)
16166                 return;
16167
16168         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16169         if (!hdr) {
16170                 nlmsg_free(msg);
16171                 return;
16172         }
16173
16174         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16175             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16176             (reason &&
16177              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16178             (from_ap &&
16179              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16180             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16181                 goto nla_put_failure;
16182
16183         genlmsg_end(msg, hdr);
16184
16185         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16186                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16187         return;
16188
16189  nla_put_failure:
16190         nlmsg_free(msg);
16191 }
16192
16193 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16194                              struct net_device *netdev, const u8 *bssid,
16195                              gfp_t gfp)
16196 {
16197         struct sk_buff *msg;
16198         void *hdr;
16199
16200         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16201         if (!msg)
16202                 return;
16203
16204         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16205         if (!hdr) {
16206                 nlmsg_free(msg);
16207                 return;
16208         }
16209
16210         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16211             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16212             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16213                 goto nla_put_failure;
16214
16215         genlmsg_end(msg, hdr);
16216
16217         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16218                                 NL80211_MCGRP_MLME, gfp);
16219         return;
16220
16221  nla_put_failure:
16222         nlmsg_free(msg);
16223 }
16224
16225 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16226                                         const u8 *ie, u8 ie_len,
16227                                         int sig_dbm, gfp_t gfp)
16228 {
16229         struct wireless_dev *wdev = dev->ieee80211_ptr;
16230         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16231         struct sk_buff *msg;
16232         void *hdr;
16233
16234         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16235                 return;
16236
16237         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16238
16239         msg = nlmsg_new(100 + ie_len, gfp);
16240         if (!msg)
16241                 return;
16242
16243         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16244         if (!hdr) {
16245                 nlmsg_free(msg);
16246                 return;
16247         }
16248
16249         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16250             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16251             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16252             (ie_len && ie &&
16253              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16254             (sig_dbm &&
16255              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16256                 goto nla_put_failure;
16257
16258         genlmsg_end(msg, hdr);
16259
16260         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16261                                 NL80211_MCGRP_MLME, gfp);
16262         return;
16263
16264  nla_put_failure:
16265         nlmsg_free(msg);
16266 }
16267 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16268
16269 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16270                                  struct net_device *netdev, const u8 *addr,
16271                                  enum nl80211_key_type key_type, int key_id,
16272                                  const u8 *tsc, gfp_t gfp)
16273 {
16274         struct sk_buff *msg;
16275         void *hdr;
16276
16277         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16278         if (!msg)
16279                 return;
16280
16281         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16282         if (!hdr) {
16283                 nlmsg_free(msg);
16284                 return;
16285         }
16286
16287         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16288             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16289             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16290             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16291             (key_id != -1 &&
16292              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16293             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16294                 goto nla_put_failure;
16295
16296         genlmsg_end(msg, hdr);
16297
16298         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16299                                 NL80211_MCGRP_MLME, gfp);
16300         return;
16301
16302  nla_put_failure:
16303         nlmsg_free(msg);
16304 }
16305
16306 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16307                                     struct ieee80211_channel *channel_before,
16308                                     struct ieee80211_channel *channel_after)
16309 {
16310         struct sk_buff *msg;
16311         void *hdr;
16312         struct nlattr *nl_freq;
16313
16314         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16315         if (!msg)
16316                 return;
16317
16318         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16319         if (!hdr) {
16320                 nlmsg_free(msg);
16321                 return;
16322         }
16323
16324         /*
16325          * Since we are applying the beacon hint to a wiphy we know its
16326          * wiphy_idx is valid
16327          */
16328         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16329                 goto nla_put_failure;
16330
16331         /* Before */
16332         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16333         if (!nl_freq)
16334                 goto nla_put_failure;
16335
16336         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16337                 goto nla_put_failure;
16338         nla_nest_end(msg, nl_freq);
16339
16340         /* After */
16341         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16342         if (!nl_freq)
16343                 goto nla_put_failure;
16344
16345         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16346                 goto nla_put_failure;
16347         nla_nest_end(msg, nl_freq);
16348
16349         genlmsg_end(msg, hdr);
16350
16351         rcu_read_lock();
16352         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16353                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16354         rcu_read_unlock();
16355
16356         return;
16357
16358 nla_put_failure:
16359         nlmsg_free(msg);
16360 }
16361
16362 static void nl80211_send_remain_on_chan_event(
16363         int cmd, struct cfg80211_registered_device *rdev,
16364         struct wireless_dev *wdev, u64 cookie,
16365         struct ieee80211_channel *chan,
16366         unsigned int duration, gfp_t gfp)
16367 {
16368         struct sk_buff *msg;
16369         void *hdr;
16370
16371         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16372         if (!msg)
16373                 return;
16374
16375         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16376         if (!hdr) {
16377                 nlmsg_free(msg);
16378                 return;
16379         }
16380
16381         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16382             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16383                                          wdev->netdev->ifindex)) ||
16384             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16385                               NL80211_ATTR_PAD) ||
16386             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16387             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16388                         NL80211_CHAN_NO_HT) ||
16389             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16390                               NL80211_ATTR_PAD))
16391                 goto nla_put_failure;
16392
16393         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16394             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16395                 goto nla_put_failure;
16396
16397         genlmsg_end(msg, hdr);
16398
16399         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16400                                 NL80211_MCGRP_MLME, gfp);
16401         return;
16402
16403  nla_put_failure:
16404         nlmsg_free(msg);
16405 }
16406
16407 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16408                                struct ieee80211_channel *chan,
16409                                unsigned int duration, gfp_t gfp)
16410 {
16411         struct wiphy *wiphy = wdev->wiphy;
16412         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16413
16414         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16415         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16416                                           rdev, wdev, cookie, chan,
16417                                           duration, gfp);
16418 }
16419 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16420
16421 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16422                                         struct ieee80211_channel *chan,
16423                                         gfp_t gfp)
16424 {
16425         struct wiphy *wiphy = wdev->wiphy;
16426         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16427
16428         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16429         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16430                                           rdev, wdev, cookie, chan, 0, gfp);
16431 }
16432 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16433
16434 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16435                                         struct ieee80211_channel *chan,
16436                                         gfp_t gfp)
16437 {
16438         struct wiphy *wiphy = wdev->wiphy;
16439         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16440
16441         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16442         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16443                                           rdev, wdev, cookie, chan, 0, gfp);
16444 }
16445 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16446
16447 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16448                       struct station_info *sinfo, gfp_t gfp)
16449 {
16450         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16451         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16452         struct sk_buff *msg;
16453
16454         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16455
16456         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16457         if (!msg)
16458                 return;
16459
16460         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16461                                  rdev, dev, mac_addr, sinfo) < 0) {
16462                 nlmsg_free(msg);
16463                 return;
16464         }
16465
16466         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16467                                 NL80211_MCGRP_MLME, gfp);
16468 }
16469 EXPORT_SYMBOL(cfg80211_new_sta);
16470
16471 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16472                             struct station_info *sinfo, gfp_t gfp)
16473 {
16474         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16475         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16476         struct sk_buff *msg;
16477         struct station_info empty_sinfo = {};
16478
16479         if (!sinfo)
16480                 sinfo = &empty_sinfo;
16481
16482         trace_cfg80211_del_sta(dev, mac_addr);
16483
16484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16485         if (!msg) {
16486                 cfg80211_sinfo_release_content(sinfo);
16487                 return;
16488         }
16489
16490         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16491                                  rdev, dev, mac_addr, sinfo) < 0) {
16492                 nlmsg_free(msg);
16493                 return;
16494         }
16495
16496         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16497                                 NL80211_MCGRP_MLME, gfp);
16498 }
16499 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16500
16501 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16502                           enum nl80211_connect_failed_reason reason,
16503                           gfp_t gfp)
16504 {
16505         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16506         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16507         struct sk_buff *msg;
16508         void *hdr;
16509
16510         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16511         if (!msg)
16512                 return;
16513
16514         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16515         if (!hdr) {
16516                 nlmsg_free(msg);
16517                 return;
16518         }
16519
16520         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16521             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16522             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16523                 goto nla_put_failure;
16524
16525         genlmsg_end(msg, hdr);
16526
16527         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16528                                 NL80211_MCGRP_MLME, gfp);
16529         return;
16530
16531  nla_put_failure:
16532         nlmsg_free(msg);
16533 }
16534 EXPORT_SYMBOL(cfg80211_conn_failed);
16535
16536 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16537                                        const u8 *addr, gfp_t gfp)
16538 {
16539         struct wireless_dev *wdev = dev->ieee80211_ptr;
16540         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16541         struct sk_buff *msg;
16542         void *hdr;
16543         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16544
16545         if (!nlportid)
16546                 return false;
16547
16548         msg = nlmsg_new(100, gfp);
16549         if (!msg)
16550                 return true;
16551
16552         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16553         if (!hdr) {
16554                 nlmsg_free(msg);
16555                 return true;
16556         }
16557
16558         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16559             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16560             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16561                 goto nla_put_failure;
16562
16563         genlmsg_end(msg, hdr);
16564         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16565         return true;
16566
16567  nla_put_failure:
16568         nlmsg_free(msg);
16569         return true;
16570 }
16571
16572 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16573                                 const u8 *addr, gfp_t gfp)
16574 {
16575         struct wireless_dev *wdev = dev->ieee80211_ptr;
16576         bool ret;
16577
16578         trace_cfg80211_rx_spurious_frame(dev, addr);
16579
16580         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16581                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16582                 trace_cfg80211_return_bool(false);
16583                 return false;
16584         }
16585         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16586                                          addr, gfp);
16587         trace_cfg80211_return_bool(ret);
16588         return ret;
16589 }
16590 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16591
16592 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16593                                         const u8 *addr, gfp_t gfp)
16594 {
16595         struct wireless_dev *wdev = dev->ieee80211_ptr;
16596         bool ret;
16597
16598         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16599
16600         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16601                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16602                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16603                 trace_cfg80211_return_bool(false);
16604                 return false;
16605         }
16606         ret = __nl80211_unexpected_frame(dev,
16607                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16608                                          addr, gfp);
16609         trace_cfg80211_return_bool(ret);
16610         return ret;
16611 }
16612 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16613
16614 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16615                       struct wireless_dev *wdev, u32 nlportid,
16616                       int freq, int sig_dbm,
16617                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16618 {
16619         struct net_device *netdev = wdev->netdev;
16620         struct sk_buff *msg;
16621         void *hdr;
16622
16623         msg = nlmsg_new(100 + len, gfp);
16624         if (!msg)
16625                 return -ENOMEM;
16626
16627         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16628         if (!hdr) {
16629                 nlmsg_free(msg);
16630                 return -ENOMEM;
16631         }
16632
16633         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16634             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16635                                         netdev->ifindex)) ||
16636             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16637                               NL80211_ATTR_PAD) ||
16638             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16639             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16640             (sig_dbm &&
16641              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16642             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16643             (flags &&
16644              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16645                 goto nla_put_failure;
16646
16647         genlmsg_end(msg, hdr);
16648
16649         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16650
16651  nla_put_failure:
16652         nlmsg_free(msg);
16653         return -ENOBUFS;
16654 }
16655
16656 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16657                                     const u8 *buf, size_t len, bool ack,
16658                                     gfp_t gfp, enum nl80211_commands command)
16659 {
16660         struct wiphy *wiphy = wdev->wiphy;
16661         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16662         struct net_device *netdev = wdev->netdev;
16663         struct sk_buff *msg;
16664         void *hdr;
16665
16666         if (command == NL80211_CMD_FRAME_TX_STATUS)
16667                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16668         else
16669                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16670
16671         msg = nlmsg_new(100 + len, gfp);
16672         if (!msg)
16673                 return;
16674
16675         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16676         if (!hdr) {
16677                 nlmsg_free(msg);
16678                 return;
16679         }
16680
16681         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16682             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16683                                    netdev->ifindex)) ||
16684             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16685                               NL80211_ATTR_PAD) ||
16686             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16687             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16688                               NL80211_ATTR_PAD) ||
16689             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16690                 goto nla_put_failure;
16691
16692         genlmsg_end(msg, hdr);
16693
16694         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16695                                 NL80211_MCGRP_MLME, gfp);
16696         return;
16697
16698 nla_put_failure:
16699         nlmsg_free(msg);
16700 }
16701
16702 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16703                                      const u8 *buf, size_t len, bool ack,
16704                                      gfp_t gfp)
16705 {
16706         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16707                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16708 }
16709 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16710
16711 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16712                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16713 {
16714         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16715                                 NL80211_CMD_FRAME_TX_STATUS);
16716 }
16717 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16718
16719 static int __nl80211_rx_control_port(struct net_device *dev,
16720                                      struct sk_buff *skb,
16721                                      bool unencrypted, gfp_t gfp)
16722 {
16723         struct wireless_dev *wdev = dev->ieee80211_ptr;
16724         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16725         struct ethhdr *ehdr = eth_hdr(skb);
16726         const u8 *addr = ehdr->h_source;
16727         u16 proto = be16_to_cpu(skb->protocol);
16728         struct sk_buff *msg;
16729         void *hdr;
16730         struct nlattr *frame;
16731
16732         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16733
16734         if (!nlportid)
16735                 return -ENOENT;
16736
16737         msg = nlmsg_new(100 + skb->len, gfp);
16738         if (!msg)
16739                 return -ENOMEM;
16740
16741         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16742         if (!hdr) {
16743                 nlmsg_free(msg);
16744                 return -ENOBUFS;
16745         }
16746
16747         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16748             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16749             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16750                               NL80211_ATTR_PAD) ||
16751             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16752             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16753             (unencrypted && nla_put_flag(msg,
16754                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16755                 goto nla_put_failure;
16756
16757         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16758         if (!frame)
16759                 goto nla_put_failure;
16760
16761         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16762         genlmsg_end(msg, hdr);
16763
16764         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16765
16766  nla_put_failure:
16767         nlmsg_free(msg);
16768         return -ENOBUFS;
16769 }
16770
16771 bool cfg80211_rx_control_port(struct net_device *dev,
16772                               struct sk_buff *skb, bool unencrypted)
16773 {
16774         int ret;
16775
16776         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16777         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16778         trace_cfg80211_return_bool(ret == 0);
16779         return ret == 0;
16780 }
16781 EXPORT_SYMBOL(cfg80211_rx_control_port);
16782
16783 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16784                                             const char *mac, gfp_t gfp)
16785 {
16786         struct wireless_dev *wdev = dev->ieee80211_ptr;
16787         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16788         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16789         void **cb;
16790
16791         if (!msg)
16792                 return NULL;
16793
16794         cb = (void **)msg->cb;
16795
16796         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16797         if (!cb[0]) {
16798                 nlmsg_free(msg);
16799                 return NULL;
16800         }
16801
16802         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16803             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16804                 goto nla_put_failure;
16805
16806         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16807                 goto nla_put_failure;
16808
16809         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16810         if (!cb[1])
16811                 goto nla_put_failure;
16812
16813         cb[2] = rdev;
16814
16815         return msg;
16816  nla_put_failure:
16817         nlmsg_free(msg);
16818         return NULL;
16819 }
16820
16821 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16822 {
16823         void **cb = (void **)msg->cb;
16824         struct cfg80211_registered_device *rdev = cb[2];
16825
16826         nla_nest_end(msg, cb[1]);
16827         genlmsg_end(msg, cb[0]);
16828
16829         memset(msg->cb, 0, sizeof(msg->cb));
16830
16831         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16832                                 NL80211_MCGRP_MLME, gfp);
16833 }
16834
16835 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16836                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16837                               s32 rssi_level, gfp_t gfp)
16838 {
16839         struct sk_buff *msg;
16840         struct wireless_dev *wdev = dev->ieee80211_ptr;
16841         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16842
16843         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16844
16845         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16846                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16847                 return;
16848
16849         if (wdev->cqm_config) {
16850                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16851
16852                 cfg80211_cqm_rssi_update(rdev, dev);
16853
16854                 if (rssi_level == 0)
16855                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16856         }
16857
16858         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16859         if (!msg)
16860                 return;
16861
16862         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16863                         rssi_event))
16864                 goto nla_put_failure;
16865
16866         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16867                                       rssi_level))
16868                 goto nla_put_failure;
16869
16870         cfg80211_send_cqm(msg, gfp);
16871
16872         return;
16873
16874  nla_put_failure:
16875         nlmsg_free(msg);
16876 }
16877 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16878
16879 void cfg80211_cqm_txe_notify(struct net_device *dev,
16880                              const u8 *peer, u32 num_packets,
16881                              u32 rate, u32 intvl, gfp_t gfp)
16882 {
16883         struct sk_buff *msg;
16884
16885         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16886         if (!msg)
16887                 return;
16888
16889         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16890                 goto nla_put_failure;
16891
16892         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16893                 goto nla_put_failure;
16894
16895         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16896                 goto nla_put_failure;
16897
16898         cfg80211_send_cqm(msg, gfp);
16899         return;
16900
16901  nla_put_failure:
16902         nlmsg_free(msg);
16903 }
16904 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16905
16906 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16907                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16908 {
16909         struct sk_buff *msg;
16910
16911         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16912
16913         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16914         if (!msg)
16915                 return;
16916
16917         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16918                 goto nla_put_failure;
16919
16920         cfg80211_send_cqm(msg, gfp);
16921         return;
16922
16923  nla_put_failure:
16924         nlmsg_free(msg);
16925 }
16926 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16927
16928 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16929 {
16930         struct sk_buff *msg;
16931
16932         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16933         if (!msg)
16934                 return;
16935
16936         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16937                 goto nla_put_failure;
16938
16939         cfg80211_send_cqm(msg, gfp);
16940         return;
16941
16942  nla_put_failure:
16943         nlmsg_free(msg);
16944 }
16945 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16946
16947 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16948                                      struct net_device *netdev, const u8 *bssid,
16949                                      const u8 *replay_ctr, gfp_t gfp)
16950 {
16951         struct sk_buff *msg;
16952         struct nlattr *rekey_attr;
16953         void *hdr;
16954
16955         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16956         if (!msg)
16957                 return;
16958
16959         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16960         if (!hdr) {
16961                 nlmsg_free(msg);
16962                 return;
16963         }
16964
16965         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16966             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16967             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16968                 goto nla_put_failure;
16969
16970         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16971         if (!rekey_attr)
16972                 goto nla_put_failure;
16973
16974         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16975                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16976                 goto nla_put_failure;
16977
16978         nla_nest_end(msg, rekey_attr);
16979
16980         genlmsg_end(msg, hdr);
16981
16982         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16983                                 NL80211_MCGRP_MLME, gfp);
16984         return;
16985
16986  nla_put_failure:
16987         nlmsg_free(msg);
16988 }
16989
16990 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16991                                const u8 *replay_ctr, gfp_t gfp)
16992 {
16993         struct wireless_dev *wdev = dev->ieee80211_ptr;
16994         struct wiphy *wiphy = wdev->wiphy;
16995         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16996
16997         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16998         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16999 }
17000 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17001
17002 static void
17003 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17004                                struct net_device *netdev, int index,
17005                                const u8 *bssid, bool preauth, gfp_t gfp)
17006 {
17007         struct sk_buff *msg;
17008         struct nlattr *attr;
17009         void *hdr;
17010
17011         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17012         if (!msg)
17013                 return;
17014
17015         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17016         if (!hdr) {
17017                 nlmsg_free(msg);
17018                 return;
17019         }
17020
17021         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17022             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17023                 goto nla_put_failure;
17024
17025         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17026         if (!attr)
17027                 goto nla_put_failure;
17028
17029         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17030             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17031             (preauth &&
17032              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17033                 goto nla_put_failure;
17034
17035         nla_nest_end(msg, attr);
17036
17037         genlmsg_end(msg, hdr);
17038
17039         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17040                                 NL80211_MCGRP_MLME, gfp);
17041         return;
17042
17043  nla_put_failure:
17044         nlmsg_free(msg);
17045 }
17046
17047 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17048                                      const u8 *bssid, bool preauth, gfp_t gfp)
17049 {
17050         struct wireless_dev *wdev = dev->ieee80211_ptr;
17051         struct wiphy *wiphy = wdev->wiphy;
17052         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17053
17054         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17055         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17056 }
17057 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17058
17059 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17060                                      struct net_device *netdev,
17061                                      struct cfg80211_chan_def *chandef,
17062                                      gfp_t gfp,
17063                                      enum nl80211_commands notif,
17064                                      u8 count)
17065 {
17066         struct sk_buff *msg;
17067         void *hdr;
17068
17069         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17070         if (!msg)
17071                 return;
17072
17073         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17074         if (!hdr) {
17075                 nlmsg_free(msg);
17076                 return;
17077         }
17078
17079         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17080                 goto nla_put_failure;
17081
17082         if (nl80211_send_chandef(msg, chandef))
17083                 goto nla_put_failure;
17084
17085         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
17086             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
17087                         goto nla_put_failure;
17088
17089         genlmsg_end(msg, hdr);
17090
17091         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17092                                 NL80211_MCGRP_MLME, gfp);
17093         return;
17094
17095  nla_put_failure:
17096         nlmsg_free(msg);
17097 }
17098
17099 void cfg80211_ch_switch_notify(struct net_device *dev,
17100                                struct cfg80211_chan_def *chandef)
17101 {
17102         struct wireless_dev *wdev = dev->ieee80211_ptr;
17103         struct wiphy *wiphy = wdev->wiphy;
17104         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17105
17106         ASSERT_WDEV_LOCK(wdev);
17107
17108         trace_cfg80211_ch_switch_notify(dev, chandef);
17109
17110         wdev->chandef = *chandef;
17111         wdev->preset_chandef = *chandef;
17112
17113         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17114             !WARN_ON(!wdev->current_bss))
17115                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17116
17117         cfg80211_sched_dfs_chan_update(rdev);
17118
17119         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17120                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
17121 }
17122 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17123
17124 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17125                                        struct cfg80211_chan_def *chandef,
17126                                        u8 count)
17127 {
17128         struct wireless_dev *wdev = dev->ieee80211_ptr;
17129         struct wiphy *wiphy = wdev->wiphy;
17130         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17131
17132         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17133
17134         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17135                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
17136 }
17137 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17138
17139 void
17140 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17141                      const struct cfg80211_chan_def *chandef,
17142                      enum nl80211_radar_event event,
17143                      struct net_device *netdev, gfp_t gfp)
17144 {
17145         struct sk_buff *msg;
17146         void *hdr;
17147
17148         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17149         if (!msg)
17150                 return;
17151
17152         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17153         if (!hdr) {
17154                 nlmsg_free(msg);
17155                 return;
17156         }
17157
17158         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17159                 goto nla_put_failure;
17160
17161         /* NOP and radar events don't need a netdev parameter */
17162         if (netdev) {
17163                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17164
17165                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17166                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17167                                       NL80211_ATTR_PAD))
17168                         goto nla_put_failure;
17169         }
17170
17171         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17172                 goto nla_put_failure;
17173
17174         if (nl80211_send_chandef(msg, chandef))
17175                 goto nla_put_failure;
17176
17177         genlmsg_end(msg, hdr);
17178
17179         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17180                                 NL80211_MCGRP_MLME, gfp);
17181         return;
17182
17183  nla_put_failure:
17184         nlmsg_free(msg);
17185 }
17186
17187 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17188                                        struct sta_opmode_info *sta_opmode,
17189                                        gfp_t gfp)
17190 {
17191         struct sk_buff *msg;
17192         struct wireless_dev *wdev = dev->ieee80211_ptr;
17193         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17194         void *hdr;
17195
17196         if (WARN_ON(!mac))
17197                 return;
17198
17199         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17200         if (!msg)
17201                 return;
17202
17203         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17204         if (!hdr) {
17205                 nlmsg_free(msg);
17206                 return;
17207         }
17208
17209         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17210                 goto nla_put_failure;
17211
17212         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17213                 goto nla_put_failure;
17214
17215         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17216                 goto nla_put_failure;
17217
17218         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17219             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17220                 goto nla_put_failure;
17221
17222         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17223             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17224                 goto nla_put_failure;
17225
17226         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17227             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17228                 goto nla_put_failure;
17229
17230         genlmsg_end(msg, hdr);
17231
17232         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17233                                 NL80211_MCGRP_MLME, gfp);
17234
17235         return;
17236
17237 nla_put_failure:
17238         nlmsg_free(msg);
17239 }
17240 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17241
17242 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17243                            u64 cookie, bool acked, s32 ack_signal,
17244                            bool is_valid_ack_signal, gfp_t gfp)
17245 {
17246         struct wireless_dev *wdev = dev->ieee80211_ptr;
17247         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17248         struct sk_buff *msg;
17249         void *hdr;
17250
17251         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17252
17253         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17254
17255         if (!msg)
17256                 return;
17257
17258         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17259         if (!hdr) {
17260                 nlmsg_free(msg);
17261                 return;
17262         }
17263
17264         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17265             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17266             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17267             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17268                               NL80211_ATTR_PAD) ||
17269             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17270             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17271                                                 ack_signal)))
17272                 goto nla_put_failure;
17273
17274         genlmsg_end(msg, hdr);
17275
17276         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17277                                 NL80211_MCGRP_MLME, gfp);
17278         return;
17279
17280  nla_put_failure:
17281         nlmsg_free(msg);
17282 }
17283 EXPORT_SYMBOL(cfg80211_probe_status);
17284
17285 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17286                                      size_t len, int freq, int sig_dbm)
17287 {
17288         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17289         struct sk_buff *msg;
17290         void *hdr;
17291         struct cfg80211_beacon_registration *reg;
17292
17293         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17294
17295         spin_lock_bh(&rdev->beacon_registrations_lock);
17296         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17297                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17298                 if (!msg) {
17299                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17300                         return;
17301                 }
17302
17303                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17304                 if (!hdr)
17305                         goto nla_put_failure;
17306
17307                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17308                     (freq &&
17309                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17310                                   KHZ_TO_MHZ(freq)) ||
17311                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17312                                   freq % 1000))) ||
17313                     (sig_dbm &&
17314                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17315                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17316                         goto nla_put_failure;
17317
17318                 genlmsg_end(msg, hdr);
17319
17320                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17321         }
17322         spin_unlock_bh(&rdev->beacon_registrations_lock);
17323         return;
17324
17325  nla_put_failure:
17326         spin_unlock_bh(&rdev->beacon_registrations_lock);
17327         nlmsg_free(msg);
17328 }
17329 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17330
17331 #ifdef CONFIG_PM
17332 static int cfg80211_net_detect_results(struct sk_buff *msg,
17333                                        struct cfg80211_wowlan_wakeup *wakeup)
17334 {
17335         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17336         struct nlattr *nl_results, *nl_match, *nl_freqs;
17337         int i, j;
17338
17339         nl_results = nla_nest_start_noflag(msg,
17340                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17341         if (!nl_results)
17342                 return -EMSGSIZE;
17343
17344         for (i = 0; i < nd->n_matches; i++) {
17345                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17346
17347                 nl_match = nla_nest_start_noflag(msg, i);
17348                 if (!nl_match)
17349                         break;
17350
17351                 /* The SSID attribute is optional in nl80211, but for
17352                  * simplicity reasons it's always present in the
17353                  * cfg80211 structure.  If a driver can't pass the
17354                  * SSID, that needs to be changed.  A zero length SSID
17355                  * is still a valid SSID (wildcard), so it cannot be
17356                  * used for this purpose.
17357                  */
17358                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17359                             match->ssid.ssid)) {
17360                         nla_nest_cancel(msg, nl_match);
17361                         goto out;
17362                 }
17363
17364                 if (match->n_channels) {
17365                         nl_freqs = nla_nest_start_noflag(msg,
17366                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17367                         if (!nl_freqs) {
17368                                 nla_nest_cancel(msg, nl_match);
17369                                 goto out;
17370                         }
17371
17372                         for (j = 0; j < match->n_channels; j++) {
17373                                 if (nla_put_u32(msg, j, match->channels[j])) {
17374                                         nla_nest_cancel(msg, nl_freqs);
17375                                         nla_nest_cancel(msg, nl_match);
17376                                         goto out;
17377                                 }
17378                         }
17379
17380                         nla_nest_end(msg, nl_freqs);
17381                 }
17382
17383                 nla_nest_end(msg, nl_match);
17384         }
17385
17386 out:
17387         nla_nest_end(msg, nl_results);
17388         return 0;
17389 }
17390
17391 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17392                                    struct cfg80211_wowlan_wakeup *wakeup,
17393                                    gfp_t gfp)
17394 {
17395         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17396         struct sk_buff *msg;
17397         void *hdr;
17398         int size = 200;
17399
17400         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17401
17402         if (wakeup)
17403                 size += wakeup->packet_present_len;
17404
17405         msg = nlmsg_new(size, gfp);
17406         if (!msg)
17407                 return;
17408
17409         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17410         if (!hdr)
17411                 goto free_msg;
17412
17413         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17414             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17415                               NL80211_ATTR_PAD))
17416                 goto free_msg;
17417
17418         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17419                                         wdev->netdev->ifindex))
17420                 goto free_msg;
17421
17422         if (wakeup) {
17423                 struct nlattr *reasons;
17424
17425                 reasons = nla_nest_start_noflag(msg,
17426                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17427                 if (!reasons)
17428                         goto free_msg;
17429
17430                 if (wakeup->disconnect &&
17431                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17432                         goto free_msg;
17433                 if (wakeup->magic_pkt &&
17434                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17435                         goto free_msg;
17436                 if (wakeup->gtk_rekey_failure &&
17437                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17438                         goto free_msg;
17439                 if (wakeup->eap_identity_req &&
17440                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17441                         goto free_msg;
17442                 if (wakeup->four_way_handshake &&
17443                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17444                         goto free_msg;
17445                 if (wakeup->rfkill_release &&
17446                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17447                         goto free_msg;
17448
17449                 if (wakeup->pattern_idx >= 0 &&
17450                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17451                                 wakeup->pattern_idx))
17452                         goto free_msg;
17453
17454                 if (wakeup->tcp_match &&
17455                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17456                         goto free_msg;
17457
17458                 if (wakeup->tcp_connlost &&
17459                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17460                         goto free_msg;
17461
17462                 if (wakeup->tcp_nomoretokens &&
17463                     nla_put_flag(msg,
17464                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17465                         goto free_msg;
17466
17467                 if (wakeup->packet) {
17468                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17469                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17470
17471                         if (!wakeup->packet_80211) {
17472                                 pkt_attr =
17473                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17474                                 len_attr =
17475                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17476                         }
17477
17478                         if (wakeup->packet_len &&
17479                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17480                                 goto free_msg;
17481
17482                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17483                                     wakeup->packet))
17484                                 goto free_msg;
17485                 }
17486
17487                 if (wakeup->net_detect &&
17488                     cfg80211_net_detect_results(msg, wakeup))
17489                                 goto free_msg;
17490
17491                 nla_nest_end(msg, reasons);
17492         }
17493
17494         genlmsg_end(msg, hdr);
17495
17496         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17497                                 NL80211_MCGRP_MLME, gfp);
17498         return;
17499
17500  free_msg:
17501         nlmsg_free(msg);
17502 }
17503 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17504 #endif
17505
17506 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17507                                 enum nl80211_tdls_operation oper,
17508                                 u16 reason_code, gfp_t gfp)
17509 {
17510         struct wireless_dev *wdev = dev->ieee80211_ptr;
17511         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17512         struct sk_buff *msg;
17513         void *hdr;
17514
17515         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17516                                          reason_code);
17517
17518         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17519         if (!msg)
17520                 return;
17521
17522         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17523         if (!hdr) {
17524                 nlmsg_free(msg);
17525                 return;
17526         }
17527
17528         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17529             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17530             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17531             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17532             (reason_code > 0 &&
17533              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17534                 goto nla_put_failure;
17535
17536         genlmsg_end(msg, hdr);
17537
17538         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17539                                 NL80211_MCGRP_MLME, gfp);
17540         return;
17541
17542  nla_put_failure:
17543         nlmsg_free(msg);
17544 }
17545 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17546
17547 static int nl80211_netlink_notify(struct notifier_block * nb,
17548                                   unsigned long state,
17549                                   void *_notify)
17550 {
17551         struct netlink_notify *notify = _notify;
17552         struct cfg80211_registered_device *rdev;
17553         struct wireless_dev *wdev;
17554         struct cfg80211_beacon_registration *reg, *tmp;
17555
17556         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17557                 return NOTIFY_DONE;
17558
17559         rcu_read_lock();
17560
17561         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17562                 struct cfg80211_sched_scan_request *sched_scan_req;
17563
17564                 list_for_each_entry_rcu(sched_scan_req,
17565                                         &rdev->sched_scan_req_list,
17566                                         list) {
17567                         if (sched_scan_req->owner_nlportid == notify->portid) {
17568                                 sched_scan_req->nl_owner_dead = true;
17569                                 schedule_work(&rdev->sched_scan_stop_wk);
17570                         }
17571                 }
17572
17573                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17574                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17575
17576                         if (wdev->owner_nlportid == notify->portid) {
17577                                 wdev->nl_owner_dead = true;
17578                                 schedule_work(&rdev->destroy_work);
17579                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17580                                 schedule_work(&wdev->disconnect_wk);
17581                         }
17582
17583                         cfg80211_release_pmsr(wdev, notify->portid);
17584                 }
17585
17586                 spin_lock_bh(&rdev->beacon_registrations_lock);
17587                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17588                                          list) {
17589                         if (reg->nlportid == notify->portid) {
17590                                 list_del(&reg->list);
17591                                 kfree(reg);
17592                                 break;
17593                         }
17594                 }
17595                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17596         }
17597
17598         rcu_read_unlock();
17599
17600         /*
17601          * It is possible that the user space process that is controlling the
17602          * indoor setting disappeared, so notify the regulatory core.
17603          */
17604         regulatory_netlink_notify(notify->portid);
17605         return NOTIFY_OK;
17606 }
17607
17608 static struct notifier_block nl80211_netlink_notifier = {
17609         .notifier_call = nl80211_netlink_notify,
17610 };
17611
17612 void cfg80211_ft_event(struct net_device *netdev,
17613                        struct cfg80211_ft_event_params *ft_event)
17614 {
17615         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17616         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17617         struct sk_buff *msg;
17618         void *hdr;
17619
17620         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17621
17622         if (!ft_event->target_ap)
17623                 return;
17624
17625         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17626                         GFP_KERNEL);
17627         if (!msg)
17628                 return;
17629
17630         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17631         if (!hdr)
17632                 goto out;
17633
17634         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17635             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17636             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17637                 goto out;
17638
17639         if (ft_event->ies &&
17640             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17641                 goto out;
17642         if (ft_event->ric_ies &&
17643             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17644                     ft_event->ric_ies))
17645                 goto out;
17646
17647         genlmsg_end(msg, hdr);
17648
17649         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17650                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17651         return;
17652  out:
17653         nlmsg_free(msg);
17654 }
17655 EXPORT_SYMBOL(cfg80211_ft_event);
17656
17657 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17658 {
17659         struct cfg80211_registered_device *rdev;
17660         struct sk_buff *msg;
17661         void *hdr;
17662         u32 nlportid;
17663
17664         rdev = wiphy_to_rdev(wdev->wiphy);
17665         if (!rdev->crit_proto_nlportid)
17666                 return;
17667
17668         nlportid = rdev->crit_proto_nlportid;
17669         rdev->crit_proto_nlportid = 0;
17670
17671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17672         if (!msg)
17673                 return;
17674
17675         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17676         if (!hdr)
17677                 goto nla_put_failure;
17678
17679         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17680             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17681                               NL80211_ATTR_PAD))
17682                 goto nla_put_failure;
17683
17684         genlmsg_end(msg, hdr);
17685
17686         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17687         return;
17688
17689  nla_put_failure:
17690         nlmsg_free(msg);
17691 }
17692 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17693
17694 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17695 {
17696         struct wiphy *wiphy = wdev->wiphy;
17697         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17698         struct sk_buff *msg;
17699         void *hdr;
17700
17701         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17702         if (!msg)
17703                 return;
17704
17705         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17706         if (!hdr)
17707                 goto out;
17708
17709         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17710             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17711             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17712                               NL80211_ATTR_PAD))
17713                 goto out;
17714
17715         genlmsg_end(msg, hdr);
17716
17717         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17718                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17719         return;
17720  out:
17721         nlmsg_free(msg);
17722 }
17723
17724 int cfg80211_external_auth_request(struct net_device *dev,
17725                                    struct cfg80211_external_auth_params *params,
17726                                    gfp_t gfp)
17727 {
17728         struct wireless_dev *wdev = dev->ieee80211_ptr;
17729         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17730         struct sk_buff *msg;
17731         void *hdr;
17732
17733         if (!wdev->conn_owner_nlportid)
17734                 return -EINVAL;
17735
17736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17737         if (!msg)
17738                 return -ENOMEM;
17739
17740         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17741         if (!hdr)
17742                 goto nla_put_failure;
17743
17744         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17745             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17746             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17747             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17748                         params->action) ||
17749             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17750             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17751                     params->ssid.ssid))
17752                 goto nla_put_failure;
17753
17754         genlmsg_end(msg, hdr);
17755         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17756                         wdev->conn_owner_nlportid);
17757         return 0;
17758
17759  nla_put_failure:
17760         nlmsg_free(msg);
17761         return -ENOBUFS;
17762 }
17763 EXPORT_SYMBOL(cfg80211_external_auth_request);
17764
17765 void cfg80211_update_owe_info_event(struct net_device *netdev,
17766                                     struct cfg80211_update_owe_info *owe_info,
17767                                     gfp_t gfp)
17768 {
17769         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17770         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17771         struct sk_buff *msg;
17772         void *hdr;
17773
17774         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17775
17776         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17777         if (!msg)
17778                 return;
17779
17780         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17781         if (!hdr)
17782                 goto nla_put_failure;
17783
17784         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17785             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17786             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17787                 goto nla_put_failure;
17788
17789         if (!owe_info->ie_len ||
17790             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17791                 goto nla_put_failure;
17792
17793         genlmsg_end(msg, hdr);
17794
17795         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17796                                 NL80211_MCGRP_MLME, gfp);
17797         return;
17798
17799 nla_put_failure:
17800         genlmsg_cancel(msg, hdr);
17801         nlmsg_free(msg);
17802 }
17803 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17804
17805 /* initialisation/exit functions */
17806
17807 int __init nl80211_init(void)
17808 {
17809         int err;
17810
17811         err = genl_register_family(&nl80211_fam);
17812         if (err)
17813                 return err;
17814
17815         err = netlink_register_notifier(&nl80211_netlink_notifier);
17816         if (err)
17817                 goto err_out;
17818
17819         return 0;
17820  err_out:
17821         genl_unregister_family(&nl80211_fam);
17822         return err;
17823 }
17824
17825 void nl80211_exit(void)
17826 {
17827         netlink_unregister_notifier(&nl80211_netlink_notifier);
17828         genl_unregister_family(&nl80211_fam);
17829 }