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         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 213                                          u.beacon.variable);
 214
 215         if (len < fixedlen)
 216                 goto err;
 217
 218         if (ieee80211_hdrlen(mgmt->frame_control) !=
 219             offsetof(struct ieee80211_mgmt, u.beacon))
 220                 goto err;
 221
 222         data += fixedlen;
 223         len -= fixedlen;
 224
 225         for_each_element(elem, data, len) {
 226                 /* nothing */
 227         }
 228
 229         if (for_each_element_completed(elem, data, len))
 230                 return 0;
 231
 232 err:
 233         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 234         return -EINVAL;
 235 }
 236
 237 static int validate_ie_attr(const struct nlattr *attr,
 238                             struct netlink_ext_ack *extack)
 239 {
 240         const u8 *data = nla_data(attr);
 241         unsigned int len = nla_len(attr);
 242         const struct element *elem;
 243
 244         for_each_element(elem, data, len) {
 245                 /* nothing */
 246         }
 247
 248         if (for_each_element_completed(elem, data, len))
 249                 return 0;
 250
 251         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 252         return -EINVAL;
 253 }
 254
 255 /* policy for the attributes */
 256 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 257
 258 static const struct nla_policy
 259 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 260         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 261         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 262                                         .len = U8_MAX },
 263         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 264                                              .len = U8_MAX },
 265 };
 266
 267 static const struct nla_policy
 268 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 269         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 270         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 271         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 272                 NLA_POLICY_MAX(NLA_U8, 15),
 273         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 274         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 275                 NLA_POLICY_MAX(NLA_U8, 15),
 276         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 277                 NLA_POLICY_MAX(NLA_U8, 31),
 278         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 279         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 280         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 281         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 282         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 283 };
 284
 285 static const struct nla_policy
 286 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 287         [NL80211_PMSR_TYPE_FTM] =
 288                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 289 };
 290
 291 static const struct nla_policy
 292 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 293         [NL80211_PMSR_REQ_ATTR_DATA] =
 294                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 295         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 296 };
 297
 298 static const struct nla_policy
 299 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 300         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 301         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 302         [NL80211_PMSR_PEER_ATTR_REQ] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 304         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_PEERS] =
 314                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 315 };
 316
 317 static const struct nla_policy
 318 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 319         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 320                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 321         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323 };
 324
 325 static const struct nla_policy
 326 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 327         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 328         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 329         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 333         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 334                                     .len = NL80211_MAX_SUPP_RATES },
 335         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 336                                 .len = NL80211_MAX_SUPP_HT_RATES },
 337         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 338         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 343         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 344         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 345         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 346         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 347         [NL80211_TID_CONFIG_ATTR_NOACK] =
 348                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 349         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 350         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 351         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 352                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 353         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 354                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 355         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 356                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 357         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 358                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 359         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 360                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 361 };
 362
 363 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 364         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 365         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 366         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 367                                       .len = 20-1 },
 368         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 369
 370         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 371         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 372         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 373                                                 NL80211_EDMG_CHANNELS_MIN,
 374                                                 NL80211_EDMG_CHANNELS_MAX),
 375         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 376                                                 NL80211_EDMG_BW_CONFIG_MIN,
 377                                                 NL80211_EDMG_BW_CONFIG_MAX),
 378
 379         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 380         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 381         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 382         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 383
 384         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 385         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 386         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 387         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 388         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 389         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 390
 391         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 392         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 393         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 394
 395         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 396         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 397
 398         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 399         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 400                                     .len = WLAN_MAX_KEY_LEN },
 401         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 402         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 403         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 404         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 405         [NL80211_ATTR_KEY_TYPE] =
 406                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 407
 408         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 409         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 410         [NL80211_ATTR_BEACON_HEAD] =
 411                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 412                                        IEEE80211_MAX_DATA_LEN),
 413         [NL80211_ATTR_BEACON_TAIL] =
 414                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 415                                        IEEE80211_MAX_DATA_LEN),
 416         [NL80211_ATTR_STA_AID] =
 417                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 418         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 419         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 420         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 421                                                .len = NL80211_MAX_SUPP_RATES },
 422         [NL80211_ATTR_STA_PLINK_ACTION] =
 423                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 424         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 425                 NLA_POLICY_RANGE(NLA_U8,
 426                                  NL80211_TX_POWER_AUTOMATIC,
 427                                  NL80211_TX_POWER_FIXED),
 428         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 429         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 430         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 431         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 432                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 433         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 434
 435         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 436         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 437
 438         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 439         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 440         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 441         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 442                                            .len = NL80211_MAX_SUPP_RATES },
 443         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 444
 445         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 446         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 447
 448         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 449
 450         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 451         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 452                                                    validate_ie_attr,
 453                                                    IEEE80211_MAX_DATA_LEN),
 454         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 455         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 456
 457         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 458                                 .len = IEEE80211_MAX_SSID_LEN },
 459         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 460         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 461         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 463         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 464                                                   NL80211_MFP_NO,
 465                                                   NL80211_MFP_OPTIONAL),
 466         [NL80211_ATTR_STA_FLAGS2] = {
 467                 .len = sizeof(struct nl80211_sta_flag_update),
 468         },
 469         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 470         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 471         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 472         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 473         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 474         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 475         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 476         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 477         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 478         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 479         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 480         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 481         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 482         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 483         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 484                                  .len = IEEE80211_MAX_DATA_LEN },
 485         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 486         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 487                                                    NL80211_PS_DISABLED,
 488                                                    NL80211_PS_ENABLED),
 489         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 490         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 491         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 492         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 493         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 494         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 495         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 497         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 498         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 499         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 500         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 501         [NL80211_ATTR_STA_PLINK_STATE] =
 502                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 503         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 504         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 505         [NL80211_ATTR_MESH_PEER_AID] =
 506                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 507         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 508         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 509         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 510         [NL80211_ATTR_HIDDEN_SSID] =
 511                 NLA_POLICY_RANGE(NLA_U32,
 512                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 513                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 514         [NL80211_ATTR_IE_PROBE_RESP] =
 515                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 516                                        IEEE80211_MAX_DATA_LEN),
 517         [NL80211_ATTR_IE_ASSOC_RESP] =
 518                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 519                                        IEEE80211_MAX_DATA_LEN),
 520         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 521         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 523         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 524         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 525         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 526         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 527         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 528         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 529         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 530         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 531                                       .len = IEEE80211_MAX_DATA_LEN },
 532         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 533         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 534         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 535                 .len = NL80211_HT_CAPABILITY_LEN
 536         },
 537         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 538         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 539         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 540         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 541         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 542         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 543         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 544         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 545         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 546         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 547         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 548                 NLA_POLICY_RANGE(NLA_U32,
 549                                  NL80211_MESH_POWER_UNKNOWN + 1,
 550                                  NL80211_MESH_POWER_MAX),
 551         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 552         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 553         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 554         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 555         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 556         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 557         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 558                 .len = NL80211_VHT_CAPABILITY_LEN,
 559         },
 560         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 561         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 562                                   .len = IEEE80211_MAX_DATA_LEN },
 563         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 564         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
 565         [NL80211_ATTR_PEER_AID] =
 566                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 567         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 568         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 570         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 571         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 572         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 573         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 574         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 576         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 577         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 578         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 579         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 580                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 581         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 582         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 583         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 584         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 585         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 586         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 587         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 588         [NL80211_ATTR_USER_PRIO] =
 589                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 590         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 591         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 592         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 593         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 594         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 595         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 596         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 597         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 600         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 601                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 602         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 603                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 604         },
 605         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 606         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 607         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 608         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 610                                     .len = FILS_MAX_KEK_LEN },
 611         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 612         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 613         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 614         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 615         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 616                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 617         },
 618         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 619         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 620                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 621         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 622                                           .len = FILS_ERP_MAX_REALM_LEN },
 623         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 624         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 625                                         .len = FILS_ERP_MAX_RRK_LEN },
 626         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 627         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 628         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 629         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 630
 631         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 632         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 633         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 634         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 635                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 636
 637         [NL80211_ATTR_FTM_RESPONDER] =
 638                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 639         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 640         [NL80211_ATTR_PEER_MEASUREMENTS] =
 641                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 642         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 643         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 644                                         .len = SAE_PASSWORD_MAX_LEN },
 645         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 646         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 647         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 648         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 649         [NL80211_ATTR_TID_CONFIG] =
 650                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 651         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 652         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 653         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 654         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 655         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 656         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 657         [NL80211_ATTR_HE_6GHZ_CAPABILITY] = {
 658                 .type = NLA_EXACT_LEN,
 659                 .len = sizeof(struct ieee80211_he_6ghz_capa),
 660         },
 661 };
 662
 663 /* policy for the key attributes */
 664 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 665         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 666         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 667         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 668         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 669         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 670         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 671         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 672         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 673         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 674 };
 675
 676 /* policy for the key default flags */
 677 static const struct nla_policy
 678 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 679         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 680         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 681 };
 682
 683 #ifdef CONFIG_PM
 684 /* policy for WoWLAN attributes */
 685 static const struct nla_policy
 686 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 687         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 688         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 689         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 690         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 691         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 692         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 693         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 694         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 695         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 696         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 697 };
 698
 699 static const struct nla_policy
 700 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 701         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 702         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 703         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 704         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 705         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 706         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 707         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 708                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 709         },
 710         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 711                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 712         },
 713         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 714         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 715         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 716 };
 717 #endif /* CONFIG_PM */
 718
 719 /* policy for coalesce rule attributes */
 720 static const struct nla_policy
 721 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 722         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 723         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 724                 NLA_POLICY_RANGE(NLA_U32,
 725                                  NL80211_COALESCE_CONDITION_MATCH,
 726                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 727         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 728 };
 729
 730 /* policy for GTK rekey offload attributes */
 731 static const struct nla_policy
 732 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 733         [NL80211_REKEY_DATA_KEK] = {
 734                 .type = NLA_BINARY,
 735                 .len = NL80211_KEK_EXT_LEN
 736         },
 737         [NL80211_REKEY_DATA_KCK] = {
 738                 .type = NLA_BINARY,
 739                 .len = NL80211_KCK_EXT_LEN
 740         },
 741         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN_WARN(NL80211_REPLAY_CTR_LEN),
 742         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 743 };
 744
 745 static const struct nla_policy
 746 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 747         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 748         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 749         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 750         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 751 };
 752
 753 static const struct nla_policy
 754 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 755         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 756                                                  .len = IEEE80211_MAX_SSID_LEN },
 757         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 758         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 759         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 760                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 761 };
 762
 763 static const struct nla_policy
 764 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 765         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 766         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 767 };
 768
 769 static const struct nla_policy
 770 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 771         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 772         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 773         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 774                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 775         },
 776 };
 777
 778 /* policy for NAN function attributes */
 779 static const struct nla_policy
 780 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 781         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 782         [NL80211_NAN_FUNC_SERVICE_ID] = {
 783                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 784         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 785         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 786         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 787         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 788         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 789         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 790         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 791         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 792         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 793                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 794         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 795         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 796         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 797         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 798         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 799 };
 800
 801 /* policy for Service Response Filter attributes */
 802 static const struct nla_policy
 803 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 804         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 805         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 806                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 807         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 808         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 809 };
 810
 811 /* policy for packet pattern attributes */
 812 static const struct nla_policy
 813 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 814         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 815         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 816         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 817 };
 818
 819 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 820                               struct cfg80211_registered_device **rdev,
 821                               struct wireless_dev **wdev)
 822 {
 823         int err;
 824
 825         if (!cb->args[0]) {
 826                 struct nlattr **attrbuf;
 827
 828                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 829                                   GFP_KERNEL);
 830                 if (!attrbuf)
 831                         return -ENOMEM;
 832
 833                 err = nlmsg_parse_deprecated(cb->nlh,
 834                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 835                                              attrbuf, nl80211_fam.maxattr,
 836                                              nl80211_policy, NULL);
 837                 if (err) {
 838                         kfree(attrbuf);
 839                         return err;
 840                 }
 841
 842                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 843                                                    attrbuf);
 844                 kfree(attrbuf);
 845                 if (IS_ERR(*wdev))
 846                         return PTR_ERR(*wdev);
 847                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 848                 /* 0 is the first index - add 1 to parse only once */
 849                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 850                 cb->args[1] = (*wdev)->identifier;
 851         } else {
 852                 /* subtract the 1 again here */
 853                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 854                 struct wireless_dev *tmp;
 855
 856                 if (!wiphy)
 857                         return -ENODEV;
 858                 *rdev = wiphy_to_rdev(wiphy);
 859                 *wdev = NULL;
 860
 861                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 862                         if (tmp->identifier == cb->args[1]) {
 863                                 *wdev = tmp;
 864                                 break;
 865                         }
 866                 }
 867
 868                 if (!*wdev)
 869                         return -ENODEV;
 870         }
 871
 872         return 0;
 873 }
 874
 875 /* message building helper */
 876 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 877                      int flags, u8 cmd)
 878 {
 879         /* since there is no private header just add the generic one */
 880         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 881 }
 882
 883 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 884                                      const struct ieee80211_reg_rule *rule)
 885 {
 886         int j;
 887         struct nlattr *nl_wmm_rules =
 888                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 889
 890         if (!nl_wmm_rules)
 891                 goto nla_put_failure;
 892
 893         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 894                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 895
 896                 if (!nl_wmm_rule)
 897                         goto nla_put_failure;
 898
 899                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 900                                 rule->wmm_rule.client[j].cw_min) ||
 901                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 902                                 rule->wmm_rule.client[j].cw_max) ||
 903                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 904                                rule->wmm_rule.client[j].aifsn) ||
 905                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 906                                 rule->wmm_rule.client[j].cot))
 907                         goto nla_put_failure;
 908
 909                 nla_nest_end(msg, nl_wmm_rule);
 910         }
 911         nla_nest_end(msg, nl_wmm_rules);
 912
 913         return 0;
 914
 915 nla_put_failure:
 916         return -ENOBUFS;
 917 }
 918
 919 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 920                                    struct ieee80211_channel *chan,
 921                                    bool large)
 922 {
 923         /* Some channels must be completely excluded from the
 924          * list to protect old user-space tools from breaking
 925          */
 926         if (!large && chan->flags &
 927             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 928                 return 0;
 929
 930         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 931                         chan->center_freq))
 932                 goto nla_put_failure;
 933
 934         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
 935                 goto nla_put_failure;
 936
 937         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 938             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 939                 goto nla_put_failure;
 940         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 941                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 942                         goto nla_put_failure;
 943                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 944                         goto nla_put_failure;
 945         }
 946         if (chan->flags & IEEE80211_CHAN_RADAR) {
 947                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 948                         goto nla_put_failure;
 949                 if (large) {
 950                         u32 time;
 951
 952                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 953
 954                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 955                                         chan->dfs_state))
 956                                 goto nla_put_failure;
 957                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 958                                         time))
 959                                 goto nla_put_failure;
 960                         if (nla_put_u32(msg,
 961                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 962                                         chan->dfs_cac_ms))
 963                                 goto nla_put_failure;
 964                 }
 965         }
 966
 967         if (large) {
 968                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 969                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 970                         goto nla_put_failure;
 971                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 972                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 973                         goto nla_put_failure;
 974                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 975                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 976                         goto nla_put_failure;
 977                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 978                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 979                         goto nla_put_failure;
 980                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 981                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 982                         goto nla_put_failure;
 983                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 984                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 985                         goto nla_put_failure;
 986                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 987                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 988                         goto nla_put_failure;
 989                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 990                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 991                         goto nla_put_failure;
 992                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 993                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 994                         goto nla_put_failure;
 995         }
 996
 997         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 998                         DBM_TO_MBM(chan->max_power)))
 999                 goto nla_put_failure;
1000
1001         if (large) {
1002                 const struct ieee80211_reg_rule *rule =
1003                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1004
1005                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1006                         if (nl80211_msg_put_wmm_rules(msg, rule))
1007                                 goto nla_put_failure;
1008                 }
1009         }
1010
1011         return 0;
1012
1013  nla_put_failure:
1014         return -ENOBUFS;
1015 }
1016
1017 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1018                                   struct cfg80211_txq_stats *txqstats,
1019                                   int attrtype)
1020 {
1021         struct nlattr *txqattr;
1022
1023 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1024         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1025             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1026                 return false;                                             \
1027         } while (0)
1028
1029         txqattr = nla_nest_start_noflag(msg, attrtype);
1030         if (!txqattr)
1031                 return false;
1032
1033         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1034         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1035         PUT_TXQVAL_U32(FLOWS, flows);
1036         PUT_TXQVAL_U32(DROPS, drops);
1037         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1038         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1039         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1040         PUT_TXQVAL_U32(COLLISIONS, collisions);
1041         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1042         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1043         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1044         nla_nest_end(msg, txqattr);
1045
1046 #undef PUT_TXQVAL_U32
1047         return true;
1048 }
1049
1050 /* netlink command implementations */
1051
1052 struct key_parse {
1053         struct key_params p;
1054         int idx;
1055         int type;
1056         bool def, defmgmt, defbeacon;
1057         bool def_uni, def_multi;
1058 };
1059
1060 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1061                                  struct key_parse *k)
1062 {
1063         struct nlattr *tb[NL80211_KEY_MAX + 1];
1064         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1065                                               nl80211_key_policy,
1066                                               info->extack);
1067         if (err)
1068                 return err;
1069
1070         k->def = !!tb[NL80211_KEY_DEFAULT];
1071         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1072         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1073
1074         if (k->def) {
1075                 k->def_uni = true;
1076                 k->def_multi = true;
1077         }
1078         if (k->defmgmt || k->defbeacon)
1079                 k->def_multi = true;
1080
1081         if (tb[NL80211_KEY_IDX])
1082                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1083
1084         if (tb[NL80211_KEY_DATA]) {
1085                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1086                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1087         }
1088
1089         if (tb[NL80211_KEY_SEQ]) {
1090                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1091                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1092         }
1093
1094         if (tb[NL80211_KEY_CIPHER])
1095                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1096
1097         if (tb[NL80211_KEY_TYPE])
1098                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1099
1100         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1101                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1102
1103                 err = nla_parse_nested_deprecated(kdt,
1104                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1105                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1106                                                   nl80211_key_default_policy,
1107                                                   info->extack);
1108                 if (err)
1109                         return err;
1110
1111                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1112                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1113         }
1114
1115         if (tb[NL80211_KEY_MODE])
1116                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1117
1118         return 0;
1119 }
1120
1121 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1122 {
1123         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1124                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1125                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1126         }
1127
1128         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1129                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1130                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1131         }
1132
1133         if (info->attrs[NL80211_ATTR_KEY_IDX])
1134                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1135
1136         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1137                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1138
1139         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1140         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1141
1142         if (k->def) {
1143                 k->def_uni = true;
1144                 k->def_multi = true;
1145         }
1146         if (k->defmgmt)
1147                 k->def_multi = true;
1148
1149         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1150                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1151
1152         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1153                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1154                 int err = nla_parse_nested_deprecated(kdt,
1155                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1156                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1157                                                       nl80211_key_default_policy,
1158                                                       info->extack);
1159                 if (err)
1160                         return err;
1161
1162                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1163                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1164         }
1165
1166         return 0;
1167 }
1168
1169 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1170 {
1171         int err;
1172
1173         memset(k, 0, sizeof(*k));
1174         k->idx = -1;
1175         k->type = -1;
1176
1177         if (info->attrs[NL80211_ATTR_KEY])
1178                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1179         else
1180                 err = nl80211_parse_key_old(info, k);
1181
1182         if (err)
1183                 return err;
1184
1185         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1186             (k->defbeacon ? 1 : 0) > 1) {
1187                 GENL_SET_ERR_MSG(info,
1188                                  "key with multiple default flags is invalid");
1189                 return -EINVAL;
1190         }
1191
1192         if (k->defmgmt || k->defbeacon) {
1193                 if (k->def_uni || !k->def_multi) {
1194                         GENL_SET_ERR_MSG(info,
1195                                          "defmgmt/defbeacon key must be mcast");
1196                         return -EINVAL;
1197                 }
1198         }
1199
1200         if (k->idx != -1) {
1201                 if (k->defmgmt) {
1202                         if (k->idx < 4 || k->idx > 5) {
1203                                 GENL_SET_ERR_MSG(info,
1204                                                  "defmgmt key idx not 4 or 5");
1205                                 return -EINVAL;
1206                         }
1207                 } else if (k->defbeacon) {
1208                         if (k->idx < 6 || k->idx > 7) {
1209                                 GENL_SET_ERR_MSG(info,
1210                                                  "defbeacon key idx not 6 or 7");
1211                                 return -EINVAL;
1212                         }
1213                 } else if (k->def) {
1214                         if (k->idx < 0 || k->idx > 3) {
1215                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1216                                 return -EINVAL;
1217                         }
1218                 } else {
1219                         if (k->idx < 0 || k->idx > 7) {
1220                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1221                                 return -EINVAL;
1222                         }
1223                 }
1224         }
1225
1226         return 0;
1227 }
1228
1229 static struct cfg80211_cached_keys *
1230 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1231                        struct genl_info *info, bool *no_ht)
1232 {
1233         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1234         struct key_parse parse;
1235         struct nlattr *key;
1236         struct cfg80211_cached_keys *result;
1237         int rem, err, def = 0;
1238         bool have_key = false;
1239
1240         nla_for_each_nested(key, keys, rem) {
1241                 have_key = true;
1242                 break;
1243         }
1244
1245         if (!have_key)
1246                 return NULL;
1247
1248         result = kzalloc(sizeof(*result), GFP_KERNEL);
1249         if (!result)
1250                 return ERR_PTR(-ENOMEM);
1251
1252         result->def = -1;
1253
1254         nla_for_each_nested(key, keys, rem) {
1255                 memset(&parse, 0, sizeof(parse));
1256                 parse.idx = -1;
1257
1258                 err = nl80211_parse_key_new(info, key, &parse);
1259                 if (err)
1260                         goto error;
1261                 err = -EINVAL;
1262                 if (!parse.p.key)
1263                         goto error;
1264                 if (parse.idx < 0 || parse.idx > 3) {
1265                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1266                         goto error;
1267                 }
1268                 if (parse.def) {
1269                         if (def) {
1270                                 GENL_SET_ERR_MSG(info,
1271                                                  "only one key can be default");
1272                                 goto error;
1273                         }
1274                         def = 1;
1275                         result->def = parse.idx;
1276                         if (!parse.def_uni || !parse.def_multi)
1277                                 goto error;
1278                 } else if (parse.defmgmt)
1279                         goto error;
1280                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1281                                                      parse.idx, false, NULL);
1282                 if (err)
1283                         goto error;
1284                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1285                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1286                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1287                         err = -EINVAL;
1288                         goto error;
1289                 }
1290                 result->params[parse.idx].cipher = parse.p.cipher;
1291                 result->params[parse.idx].key_len = parse.p.key_len;
1292                 result->params[parse.idx].key = result->data[parse.idx];
1293                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1294
1295                 /* must be WEP key if we got here */
1296                 if (no_ht)
1297                         *no_ht = true;
1298         }
1299
1300         if (result->def < 0) {
1301                 err = -EINVAL;
1302                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1303                 goto error;
1304         }
1305
1306         return result;
1307  error:
1308         kfree(result);
1309         return ERR_PTR(err);
1310 }
1311
1312 static int nl80211_key_allowed(struct wireless_dev *wdev)
1313 {
1314         ASSERT_WDEV_LOCK(wdev);
1315
1316         switch (wdev->iftype) {
1317         case NL80211_IFTYPE_AP:
1318         case NL80211_IFTYPE_AP_VLAN:
1319         case NL80211_IFTYPE_P2P_GO:
1320         case NL80211_IFTYPE_MESH_POINT:
1321                 break;
1322         case NL80211_IFTYPE_ADHOC:
1323         case NL80211_IFTYPE_STATION:
1324         case NL80211_IFTYPE_P2P_CLIENT:
1325                 if (!wdev->current_bss)
1326                         return -ENOLINK;
1327                 break;
1328         case NL80211_IFTYPE_UNSPECIFIED:
1329         case NL80211_IFTYPE_OCB:
1330         case NL80211_IFTYPE_MONITOR:
1331         case NL80211_IFTYPE_NAN:
1332         case NL80211_IFTYPE_P2P_DEVICE:
1333         case NL80211_IFTYPE_WDS:
1334         case NUM_NL80211_IFTYPES:
1335                 return -EINVAL;
1336         }
1337
1338         return 0;
1339 }
1340
1341 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1342                                                         u32 freq)
1343 {
1344         struct ieee80211_channel *chan;
1345
1346         chan = ieee80211_get_channel_khz(wiphy, freq);
1347         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1348                 return NULL;
1349         return chan;
1350 }
1351
1352 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1353 {
1354         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1355         int i;
1356
1357         if (!nl_modes)
1358                 goto nla_put_failure;
1359
1360         i = 0;
1361         while (ifmodes) {
1362                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1363                         goto nla_put_failure;
1364                 ifmodes >>= 1;
1365                 i++;
1366         }
1367
1368         nla_nest_end(msg, nl_modes);
1369         return 0;
1370
1371 nla_put_failure:
1372         return -ENOBUFS;
1373 }
1374
1375 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1376                                           struct sk_buff *msg,
1377                                           bool large)
1378 {
1379         struct nlattr *nl_combis;
1380         int i, j;
1381
1382         nl_combis = nla_nest_start_noflag(msg,
1383                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1384         if (!nl_combis)
1385                 goto nla_put_failure;
1386
1387         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1388                 const struct ieee80211_iface_combination *c;
1389                 struct nlattr *nl_combi, *nl_limits;
1390
1391                 c = &wiphy->iface_combinations[i];
1392
1393                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1394                 if (!nl_combi)
1395                         goto nla_put_failure;
1396
1397                 nl_limits = nla_nest_start_noflag(msg,
1398                                                   NL80211_IFACE_COMB_LIMITS);
1399                 if (!nl_limits)
1400                         goto nla_put_failure;
1401
1402                 for (j = 0; j < c->n_limits; j++) {
1403                         struct nlattr *nl_limit;
1404
1405                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1406                         if (!nl_limit)
1407                                 goto nla_put_failure;
1408                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1409                                         c->limits[j].max))
1410                                 goto nla_put_failure;
1411                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1412                                                 c->limits[j].types))
1413                                 goto nla_put_failure;
1414                         nla_nest_end(msg, nl_limit);
1415                 }
1416
1417                 nla_nest_end(msg, nl_limits);
1418
1419                 if (c->beacon_int_infra_match &&
1420                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1421                         goto nla_put_failure;
1422                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1423                                 c->num_different_channels) ||
1424                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1425                                 c->max_interfaces))
1426                         goto nla_put_failure;
1427                 if (large &&
1428                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1429                                 c->radar_detect_widths) ||
1430                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1431                                 c->radar_detect_regions)))
1432                         goto nla_put_failure;
1433                 if (c->beacon_int_min_gcd &&
1434                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1435                                 c->beacon_int_min_gcd))
1436                         goto nla_put_failure;
1437
1438                 nla_nest_end(msg, nl_combi);
1439         }
1440
1441         nla_nest_end(msg, nl_combis);
1442
1443         return 0;
1444 nla_put_failure:
1445         return -ENOBUFS;
1446 }
1447
1448 #ifdef CONFIG_PM
1449 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1450                                         struct sk_buff *msg)
1451 {
1452         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1453         struct nlattr *nl_tcp;
1454
1455         if (!tcp)
1456                 return 0;
1457
1458         nl_tcp = nla_nest_start_noflag(msg,
1459                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1460         if (!nl_tcp)
1461                 return -ENOBUFS;
1462
1463         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1464                         tcp->data_payload_max))
1465                 return -ENOBUFS;
1466
1467         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1468                         tcp->data_payload_max))
1469                 return -ENOBUFS;
1470
1471         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1472                 return -ENOBUFS;
1473
1474         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1475                                 sizeof(*tcp->tok), tcp->tok))
1476                 return -ENOBUFS;
1477
1478         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1479                         tcp->data_interval_max))
1480                 return -ENOBUFS;
1481
1482         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1483                         tcp->wake_payload_max))
1484                 return -ENOBUFS;
1485
1486         nla_nest_end(msg, nl_tcp);
1487         return 0;
1488 }
1489
1490 static int nl80211_send_wowlan(struct sk_buff *msg,
1491                                struct cfg80211_registered_device *rdev,
1492                                bool large)
1493 {
1494         struct nlattr *nl_wowlan;
1495
1496         if (!rdev->wiphy.wowlan)
1497                 return 0;
1498
1499         nl_wowlan = nla_nest_start_noflag(msg,
1500                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1501         if (!nl_wowlan)
1502                 return -ENOBUFS;
1503
1504         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1505              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1506             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1507              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1508             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1509              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1510             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1511              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1512             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1513              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1514             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1515              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1516             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1517              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1518             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1519              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1520                 return -ENOBUFS;
1521
1522         if (rdev->wiphy.wowlan->n_patterns) {
1523                 struct nl80211_pattern_support pat = {
1524                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1525                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1526                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1527                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1528                 };
1529
1530                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1531                             sizeof(pat), &pat))
1532                         return -ENOBUFS;
1533         }
1534
1535         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1536             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1537                         rdev->wiphy.wowlan->max_nd_match_sets))
1538                 return -ENOBUFS;
1539
1540         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1541                 return -ENOBUFS;
1542
1543         nla_nest_end(msg, nl_wowlan);
1544
1545         return 0;
1546 }
1547 #endif
1548
1549 static int nl80211_send_coalesce(struct sk_buff *msg,
1550                                  struct cfg80211_registered_device *rdev)
1551 {
1552         struct nl80211_coalesce_rule_support rule;
1553
1554         if (!rdev->wiphy.coalesce)
1555                 return 0;
1556
1557         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1558         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1559         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1560         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1561         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1562         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1563
1564         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1565                 return -ENOBUFS;
1566
1567         return 0;
1568 }
1569
1570 static int
1571 nl80211_send_iftype_data(struct sk_buff *msg,
1572                          const struct ieee80211_supported_band *sband,
1573                          const struct ieee80211_sband_iftype_data *iftdata)
1574 {
1575         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1576
1577         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1578                                 iftdata->types_mask))
1579                 return -ENOBUFS;
1580
1581         if (he_cap->has_he) {
1582                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1583                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1584                             he_cap->he_cap_elem.mac_cap_info) ||
1585                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1586                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1587                             he_cap->he_cap_elem.phy_cap_info) ||
1588                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1589                             sizeof(he_cap->he_mcs_nss_supp),
1590                             &he_cap->he_mcs_nss_supp) ||
1591                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1592                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1593                         return -ENOBUFS;
1594         }
1595
1596         if (sband->band == NL80211_BAND_6GHZ &&
1597             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1598                     sizeof(iftdata->he_6ghz_capa),
1599                     &iftdata->he_6ghz_capa))
1600                 return -ENOBUFS;
1601
1602         return 0;
1603 }
1604
1605 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1606                                       struct ieee80211_supported_band *sband)
1607 {
1608         struct nlattr *nl_rates, *nl_rate;
1609         struct ieee80211_rate *rate;
1610         int i;
1611
1612         /* add HT info */
1613         if (sband->ht_cap.ht_supported &&
1614             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1615                      sizeof(sband->ht_cap.mcs),
1616                      &sband->ht_cap.mcs) ||
1617              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1618                          sband->ht_cap.cap) ||
1619              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1620                         sband->ht_cap.ampdu_factor) ||
1621              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1622                         sband->ht_cap.ampdu_density)))
1623                 return -ENOBUFS;
1624
1625         /* add VHT info */
1626         if (sband->vht_cap.vht_supported &&
1627             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1628                      sizeof(sband->vht_cap.vht_mcs),
1629                      &sband->vht_cap.vht_mcs) ||
1630              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1631                          sband->vht_cap.cap)))
1632                 return -ENOBUFS;
1633
1634         if (sband->n_iftype_data) {
1635                 struct nlattr *nl_iftype_data =
1636                         nla_nest_start_noflag(msg,
1637                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1638                 int err;
1639
1640                 if (!nl_iftype_data)
1641                         return -ENOBUFS;
1642
1643                 for (i = 0; i < sband->n_iftype_data; i++) {
1644                         struct nlattr *iftdata;
1645
1646                         iftdata = nla_nest_start_noflag(msg, i + 1);
1647                         if (!iftdata)
1648                                 return -ENOBUFS;
1649
1650                         err = nl80211_send_iftype_data(msg, sband,
1651                                                        &sband->iftype_data[i]);
1652                         if (err)
1653                                 return err;
1654
1655                         nla_nest_end(msg, iftdata);
1656                 }
1657
1658                 nla_nest_end(msg, nl_iftype_data);
1659         }
1660
1661         /* add EDMG info */
1662         if (sband->edmg_cap.channels &&
1663             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1664                        sband->edmg_cap.channels) ||
1665             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1666                        sband->edmg_cap.bw_config)))
1667
1668                 return -ENOBUFS;
1669
1670         /* add bitrates */
1671         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1672         if (!nl_rates)
1673                 return -ENOBUFS;
1674
1675         for (i = 0; i < sband->n_bitrates; i++) {
1676                 nl_rate = nla_nest_start_noflag(msg, i);
1677                 if (!nl_rate)
1678                         return -ENOBUFS;
1679
1680                 rate = &sband->bitrates[i];
1681                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1682                                 rate->bitrate))
1683                         return -ENOBUFS;
1684                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1685                     nla_put_flag(msg,
1686                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1687                         return -ENOBUFS;
1688
1689                 nla_nest_end(msg, nl_rate);
1690         }
1691
1692         nla_nest_end(msg, nl_rates);
1693
1694         return 0;
1695 }
1696
1697 static int
1698 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1699                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1700 {
1701         u16 stypes;
1702         struct nlattr *nl_ftypes, *nl_ifs;
1703         enum nl80211_iftype ift;
1704         int i;
1705
1706         if (!mgmt_stypes)
1707                 return 0;
1708
1709         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1710         if (!nl_ifs)
1711                 return -ENOBUFS;
1712
1713         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1714                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1715                 if (!nl_ftypes)
1716                         return -ENOBUFS;
1717                 i = 0;
1718                 stypes = mgmt_stypes[ift].tx;
1719                 while (stypes) {
1720                         if ((stypes & 1) &&
1721                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1722                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1723                                 return -ENOBUFS;
1724                         stypes >>= 1;
1725                         i++;
1726                 }
1727                 nla_nest_end(msg, nl_ftypes);
1728         }
1729
1730         nla_nest_end(msg, nl_ifs);
1731
1732         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1733         if (!nl_ifs)
1734                 return -ENOBUFS;
1735
1736         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1737                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1738                 if (!nl_ftypes)
1739                         return -ENOBUFS;
1740                 i = 0;
1741                 stypes = mgmt_stypes[ift].rx;
1742                 while (stypes) {
1743                         if ((stypes & 1) &&
1744                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1745                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1746                                 return -ENOBUFS;
1747                         stypes >>= 1;
1748                         i++;
1749                 }
1750                 nla_nest_end(msg, nl_ftypes);
1751         }
1752         nla_nest_end(msg, nl_ifs);
1753
1754         return 0;
1755 }
1756
1757 #define CMD(op, n)                                                      \
1758          do {                                                           \
1759                 if (rdev->ops->op) {                                    \
1760                         i++;                                            \
1761                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1762                                 goto nla_put_failure;                   \
1763                 }                                                       \
1764         } while (0)
1765
1766 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1767                                         struct sk_buff *msg)
1768 {
1769         int i = 0;
1770
1771         /*
1772          * do *NOT* add anything into this function, new things need to be
1773          * advertised only to new versions of userspace that can deal with
1774          * the split (and they can't possibly care about new features...
1775          */
1776         CMD(add_virtual_intf, NEW_INTERFACE);
1777         CMD(change_virtual_intf, SET_INTERFACE);
1778         CMD(add_key, NEW_KEY);
1779         CMD(start_ap, START_AP);
1780         CMD(add_station, NEW_STATION);
1781         CMD(add_mpath, NEW_MPATH);
1782         CMD(update_mesh_config, SET_MESH_CONFIG);
1783         CMD(change_bss, SET_BSS);
1784         CMD(auth, AUTHENTICATE);
1785         CMD(assoc, ASSOCIATE);
1786         CMD(deauth, DEAUTHENTICATE);
1787         CMD(disassoc, DISASSOCIATE);
1788         CMD(join_ibss, JOIN_IBSS);
1789         CMD(join_mesh, JOIN_MESH);
1790         CMD(set_pmksa, SET_PMKSA);
1791         CMD(del_pmksa, DEL_PMKSA);
1792         CMD(flush_pmksa, FLUSH_PMKSA);
1793         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1794                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1795         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1796         CMD(mgmt_tx, FRAME);
1797         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1798         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1799                 i++;
1800                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1801                         goto nla_put_failure;
1802         }
1803         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1804             rdev->ops->join_mesh) {
1805                 i++;
1806                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1807                         goto nla_put_failure;
1808         }
1809         CMD(set_wds_peer, SET_WDS_PEER);
1810         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1811                 CMD(tdls_mgmt, TDLS_MGMT);
1812                 CMD(tdls_oper, TDLS_OPER);
1813         }
1814         if (rdev->wiphy.max_sched_scan_reqs)
1815                 CMD(sched_scan_start, START_SCHED_SCAN);
1816         CMD(probe_client, PROBE_CLIENT);
1817         CMD(set_noack_map, SET_NOACK_MAP);
1818         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1819                 i++;
1820                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1821                         goto nla_put_failure;
1822         }
1823         CMD(start_p2p_device, START_P2P_DEVICE);
1824         CMD(set_mcast_rate, SET_MCAST_RATE);
1825 #ifdef CONFIG_NL80211_TESTMODE
1826         CMD(testmode_cmd, TESTMODE);
1827 #endif
1828
1829         if (rdev->ops->connect || rdev->ops->auth) {
1830                 i++;
1831                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1832                         goto nla_put_failure;
1833         }
1834
1835         if (rdev->ops->disconnect || rdev->ops->deauth) {
1836                 i++;
1837                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1838                         goto nla_put_failure;
1839         }
1840
1841         return i;
1842  nla_put_failure:
1843         return -ENOBUFS;
1844 }
1845
1846 static int
1847 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1848                            struct sk_buff *msg)
1849 {
1850         struct nlattr *ftm;
1851
1852         if (!cap->ftm.supported)
1853                 return 0;
1854
1855         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1856         if (!ftm)
1857                 return -ENOBUFS;
1858
1859         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1860                 return -ENOBUFS;
1861         if (cap->ftm.non_asap &&
1862             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1863                 return -ENOBUFS;
1864         if (cap->ftm.request_lci &&
1865             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1866                 return -ENOBUFS;
1867         if (cap->ftm.request_civicloc &&
1868             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1869                 return -ENOBUFS;
1870         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1871                         cap->ftm.preambles))
1872                 return -ENOBUFS;
1873         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1874                         cap->ftm.bandwidths))
1875                 return -ENOBUFS;
1876         if (cap->ftm.max_bursts_exponent >= 0 &&
1877             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1878                         cap->ftm.max_bursts_exponent))
1879                 return -ENOBUFS;
1880         if (cap->ftm.max_ftms_per_burst &&
1881             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1882                         cap->ftm.max_ftms_per_burst))
1883                 return -ENOBUFS;
1884         if (cap->ftm.trigger_based &&
1885             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1886                 return -ENOBUFS;
1887         if (cap->ftm.non_trigger_based &&
1888             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1889                 return -ENOBUFS;
1890
1891         nla_nest_end(msg, ftm);
1892         return 0;
1893 }
1894
1895 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1896                                   struct sk_buff *msg)
1897 {
1898         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1899         struct nlattr *pmsr, *caps;
1900
1901         if (!cap)
1902                 return 0;
1903
1904         /*
1905          * we don't need to clean up anything here since the caller
1906          * will genlmsg_cancel() if we fail
1907          */
1908
1909         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1910         if (!pmsr)
1911                 return -ENOBUFS;
1912
1913         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1914                 return -ENOBUFS;
1915
1916         if (cap->report_ap_tsf &&
1917             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1918                 return -ENOBUFS;
1919
1920         if (cap->randomize_mac_addr &&
1921             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1922                 return -ENOBUFS;
1923
1924         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1925         if (!caps)
1926                 return -ENOBUFS;
1927
1928         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1929                 return -ENOBUFS;
1930
1931         nla_nest_end(msg, caps);
1932         nla_nest_end(msg, pmsr);
1933
1934         return 0;
1935 }
1936
1937 static int
1938 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1939                               struct sk_buff *msg)
1940 {
1941         int i;
1942         struct nlattr *nested, *nested_akms;
1943         const struct wiphy_iftype_akm_suites *iftype_akms;
1944
1945         if (!rdev->wiphy.num_iftype_akm_suites ||
1946             !rdev->wiphy.iftype_akm_suites)
1947                 return 0;
1948
1949         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1950         if (!nested)
1951                 return -ENOBUFS;
1952
1953         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1954                 nested_akms = nla_nest_start(msg, i + 1);
1955                 if (!nested_akms)
1956                         return -ENOBUFS;
1957
1958                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1959
1960                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1961                                         iftype_akms->iftypes_mask))
1962                         return -ENOBUFS;
1963
1964                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1965                             sizeof(u32) * iftype_akms->n_akm_suites,
1966                             iftype_akms->akm_suites)) {
1967                         return -ENOBUFS;
1968                 }
1969                 nla_nest_end(msg, nested_akms);
1970         }
1971
1972         nla_nest_end(msg, nested);
1973
1974         return 0;
1975 }
1976
1977 static int
1978 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1979                                struct sk_buff *msg)
1980 {
1981         struct nlattr *supp;
1982
1983         if (!rdev->wiphy.tid_config_support.vif &&
1984             !rdev->wiphy.tid_config_support.peer)
1985                 return 0;
1986
1987         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1988         if (!supp)
1989                 return -ENOSPC;
1990
1991         if (rdev->wiphy.tid_config_support.vif &&
1992             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1993                               rdev->wiphy.tid_config_support.vif,
1994                               NL80211_TID_CONFIG_ATTR_PAD))
1995                 goto fail;
1996
1997         if (rdev->wiphy.tid_config_support.peer &&
1998             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
1999                               rdev->wiphy.tid_config_support.peer,
2000                               NL80211_TID_CONFIG_ATTR_PAD))
2001                 goto fail;
2002
2003         /* for now we just use the same value ... makes more sense */
2004         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2005                        rdev->wiphy.tid_config_support.max_retry))
2006                 goto fail;
2007         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2008                        rdev->wiphy.tid_config_support.max_retry))
2009                 goto fail;
2010
2011         nla_nest_end(msg, supp);
2012
2013         return 0;
2014 fail:
2015         nla_nest_cancel(msg, supp);
2016         return -ENOBUFS;
2017 }
2018
2019 struct nl80211_dump_wiphy_state {
2020         s64 filter_wiphy;
2021         long start;
2022         long split_start, band_start, chan_start, capa_start;
2023         bool split;
2024 };
2025
2026 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2027                               enum nl80211_commands cmd,
2028                               struct sk_buff *msg, u32 portid, u32 seq,
2029                               int flags, struct nl80211_dump_wiphy_state *state)
2030 {
2031         void *hdr;
2032         struct nlattr *nl_bands, *nl_band;
2033         struct nlattr *nl_freqs, *nl_freq;
2034         struct nlattr *nl_cmds;
2035         enum nl80211_band band;
2036         struct ieee80211_channel *chan;
2037         int i;
2038         const struct ieee80211_txrx_stypes *mgmt_stypes =
2039                                 rdev->wiphy.mgmt_stypes;
2040         u32 features;
2041
2042         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2043         if (!hdr)
2044                 return -ENOBUFS;
2045
2046         if (WARN_ON(!state))
2047                 return -EINVAL;
2048
2049         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2050             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2051                            wiphy_name(&rdev->wiphy)) ||
2052             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2053                         cfg80211_rdev_list_generation))
2054                 goto nla_put_failure;
2055
2056         if (cmd != NL80211_CMD_NEW_WIPHY)
2057                 goto finish;
2058
2059         switch (state->split_start) {
2060         case 0:
2061                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2062                                rdev->wiphy.retry_short) ||
2063                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2064                                rdev->wiphy.retry_long) ||
2065                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2066                                 rdev->wiphy.frag_threshold) ||
2067                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2068                                 rdev->wiphy.rts_threshold) ||
2069                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2070                                rdev->wiphy.coverage_class) ||
2071                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2072                                rdev->wiphy.max_scan_ssids) ||
2073                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2074                                rdev->wiphy.max_sched_scan_ssids) ||
2075                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2076                                 rdev->wiphy.max_scan_ie_len) ||
2077                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2078                                 rdev->wiphy.max_sched_scan_ie_len) ||
2079                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2080                                rdev->wiphy.max_match_sets) ||
2081                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2082                                 rdev->wiphy.max_sched_scan_plans) ||
2083                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2084                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2085                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2086                                 rdev->wiphy.max_sched_scan_plan_iterations))
2087                         goto nla_put_failure;
2088
2089                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2090                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2091                         goto nla_put_failure;
2092                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2093                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2094                         goto nla_put_failure;
2095                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2096                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2097                         goto nla_put_failure;
2098                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2099                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2100                         goto nla_put_failure;
2101                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2102                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2103                         goto nla_put_failure;
2104                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2105                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2106                         goto nla_put_failure;
2107                 state->split_start++;
2108                 if (state->split)
2109                         break;
2110                 /* fall through */
2111         case 1:
2112                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2113                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2114                             rdev->wiphy.cipher_suites))
2115                         goto nla_put_failure;
2116
2117                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2118                                rdev->wiphy.max_num_pmkids))
2119                         goto nla_put_failure;
2120
2121                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2122                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2123                         goto nla_put_failure;
2124
2125                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2126                                 rdev->wiphy.available_antennas_tx) ||
2127                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2128                                 rdev->wiphy.available_antennas_rx))
2129                         goto nla_put_failure;
2130
2131                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2132                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2133                                 rdev->wiphy.probe_resp_offload))
2134                         goto nla_put_failure;
2135
2136                 if ((rdev->wiphy.available_antennas_tx ||
2137                      rdev->wiphy.available_antennas_rx) &&
2138                     rdev->ops->get_antenna) {
2139                         u32 tx_ant = 0, rx_ant = 0;
2140                         int res;
2141
2142                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2143                         if (!res) {
2144                                 if (nla_put_u32(msg,
2145                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2146                                                 tx_ant) ||
2147                                     nla_put_u32(msg,
2148                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2149                                                 rx_ant))
2150                                         goto nla_put_failure;
2151                         }
2152                 }
2153
2154                 state->split_start++;
2155                 if (state->split)
2156                         break;
2157                 /* fall through */
2158         case 2:
2159                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2160                                         rdev->wiphy.interface_modes))
2161                                 goto nla_put_failure;
2162                 state->split_start++;
2163                 if (state->split)
2164                         break;
2165                 /* fall through */
2166         case 3:
2167                 nl_bands = nla_nest_start_noflag(msg,
2168                                                  NL80211_ATTR_WIPHY_BANDS);
2169                 if (!nl_bands)
2170                         goto nla_put_failure;
2171
2172                 for (band = state->band_start;
2173                      band < NUM_NL80211_BANDS; band++) {
2174                         struct ieee80211_supported_band *sband;
2175
2176                         sband = rdev->wiphy.bands[band];
2177
2178                         if (!sband)
2179                                 continue;
2180
2181                         nl_band = nla_nest_start_noflag(msg, band);
2182                         if (!nl_band)
2183                                 goto nla_put_failure;
2184
2185                         switch (state->chan_start) {
2186                         case 0:
2187                                 if (nl80211_send_band_rateinfo(msg, sband))
2188                                         goto nla_put_failure;
2189                                 state->chan_start++;
2190                                 if (state->split)
2191                                         break;
2192                                 /* fall through */
2193                         default:
2194                                 /* add frequencies */
2195                                 nl_freqs = nla_nest_start_noflag(msg,
2196                                                                  NL80211_BAND_ATTR_FREQS);
2197                                 if (!nl_freqs)
2198                                         goto nla_put_failure;
2199
2200                                 for (i = state->chan_start - 1;
2201                                      i < sband->n_channels;
2202                                      i++) {
2203                                         nl_freq = nla_nest_start_noflag(msg,
2204                                                                         i);
2205                                         if (!nl_freq)
2206                                                 goto nla_put_failure;
2207
2208                                         chan = &sband->channels[i];
2209
2210                                         if (nl80211_msg_put_channel(
2211                                                         msg, &rdev->wiphy, chan,
2212                                                         state->split))
2213                                                 goto nla_put_failure;
2214
2215                                         nla_nest_end(msg, nl_freq);
2216                                         if (state->split)
2217                                                 break;
2218                                 }
2219                                 if (i < sband->n_channels)
2220                                         state->chan_start = i + 2;
2221                                 else
2222                                         state->chan_start = 0;
2223                                 nla_nest_end(msg, nl_freqs);
2224                         }
2225
2226                         nla_nest_end(msg, nl_band);
2227
2228                         if (state->split) {
2229                                 /* start again here */
2230                                 if (state->chan_start)
2231                                         band--;
2232                                 break;
2233                         }
2234                 }
2235                 nla_nest_end(msg, nl_bands);
2236
2237                 if (band < NUM_NL80211_BANDS)
2238                         state->band_start = band + 1;
2239                 else
2240                         state->band_start = 0;
2241
2242                 /* if bands & channels are done, continue outside */
2243                 if (state->band_start == 0 && state->chan_start == 0)
2244                         state->split_start++;
2245                 if (state->split)
2246                         break;
2247                 /* fall through */
2248         case 4:
2249                 nl_cmds = nla_nest_start_noflag(msg,
2250                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2251                 if (!nl_cmds)
2252                         goto nla_put_failure;
2253
2254                 i = nl80211_add_commands_unsplit(rdev, msg);
2255                 if (i < 0)
2256                         goto nla_put_failure;
2257                 if (state->split) {
2258                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2259                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2260                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2261                                 CMD(channel_switch, CHANNEL_SWITCH);
2262                         CMD(set_qos_map, SET_QOS_MAP);
2263                         if (rdev->wiphy.features &
2264                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2265                                 CMD(add_tx_ts, ADD_TX_TS);
2266                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2267                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2268                         CMD(update_ft_ies, UPDATE_FT_IES);
2269                 }
2270 #undef CMD
2271
2272                 nla_nest_end(msg, nl_cmds);
2273                 state->split_start++;
2274                 if (state->split)
2275                         break;
2276                 /* fall through */
2277         case 5:
2278                 if (rdev->ops->remain_on_channel &&
2279                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2280                     nla_put_u32(msg,
2281                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2282                                 rdev->wiphy.max_remain_on_channel_duration))
2283                         goto nla_put_failure;
2284
2285                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2286                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2287                         goto nla_put_failure;
2288
2289                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2290                         goto nla_put_failure;
2291                 state->split_start++;
2292                 if (state->split)
2293                         break;
2294                 /* fall through */
2295         case 6:
2296 #ifdef CONFIG_PM
2297                 if (nl80211_send_wowlan(msg, rdev, state->split))
2298                         goto nla_put_failure;
2299                 state->split_start++;
2300                 if (state->split)
2301                         break;
2302 #else
2303                 state->split_start++;
2304 #endif
2305                 /* fall through */
2306         case 7:
2307                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2308                                         rdev->wiphy.software_iftypes))
2309                         goto nla_put_failure;
2310
2311                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2312                                                    state->split))
2313                         goto nla_put_failure;
2314
2315                 state->split_start++;
2316                 if (state->split)
2317                         break;
2318                 /* fall through */
2319         case 8:
2320                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2321                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2322                                 rdev->wiphy.ap_sme_capa))
2323                         goto nla_put_failure;
2324
2325                 features = rdev->wiphy.features;
2326                 /*
2327                  * We can only add the per-channel limit information if the
2328                  * dump is split, otherwise it makes it too big. Therefore
2329                  * only advertise it in that case.
2330                  */
2331                 if (state->split)
2332                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2333                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2334                         goto nla_put_failure;
2335
2336                 if (rdev->wiphy.ht_capa_mod_mask &&
2337                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2338                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2339                             rdev->wiphy.ht_capa_mod_mask))
2340                         goto nla_put_failure;
2341
2342                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2343                     rdev->wiphy.max_acl_mac_addrs &&
2344                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2345                                 rdev->wiphy.max_acl_mac_addrs))
2346                         goto nla_put_failure;
2347
2348                 /*
2349                  * Any information below this point is only available to
2350                  * applications that can deal with it being split. This
2351                  * helps ensure that newly added capabilities don't break
2352                  * older tools by overrunning their buffers.
2353                  *
2354                  * We still increment split_start so that in the split
2355                  * case we'll continue with more data in the next round,
2356                  * but break unconditionally so unsplit data stops here.
2357                  */
2358                 state->split_start++;
2359                 break;
2360         case 9:
2361                 if (rdev->wiphy.extended_capabilities &&
2362                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2363                              rdev->wiphy.extended_capabilities_len,
2364                              rdev->wiphy.extended_capabilities) ||
2365                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2366                              rdev->wiphy.extended_capabilities_len,
2367                              rdev->wiphy.extended_capabilities_mask)))
2368                         goto nla_put_failure;
2369
2370                 if (rdev->wiphy.vht_capa_mod_mask &&
2371                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2372                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2373                             rdev->wiphy.vht_capa_mod_mask))
2374                         goto nla_put_failure;
2375
2376                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2377                             rdev->wiphy.perm_addr))
2378                         goto nla_put_failure;
2379
2380                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2381                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2382                             rdev->wiphy.addr_mask))
2383                         goto nla_put_failure;
2384
2385                 if (rdev->wiphy.n_addresses > 1) {
2386                         void *attr;
2387
2388                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2389                         if (!attr)
2390                                 goto nla_put_failure;
2391
2392                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2393                                 if (nla_put(msg, i + 1, ETH_ALEN,
2394                                             rdev->wiphy.addresses[i].addr))
2395                                         goto nla_put_failure;
2396
2397                         nla_nest_end(msg, attr);
2398                 }
2399
2400                 state->split_start++;
2401                 break;
2402         case 10:
2403                 if (nl80211_send_coalesce(msg, rdev))
2404                         goto nla_put_failure;
2405
2406                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2407                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2408                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2409                         goto nla_put_failure;
2410
2411                 if (rdev->wiphy.max_ap_assoc_sta &&
2412                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2413                                 rdev->wiphy.max_ap_assoc_sta))
2414                         goto nla_put_failure;
2415
2416                 state->split_start++;
2417                 break;
2418         case 11:
2419                 if (rdev->wiphy.n_vendor_commands) {
2420                         const struct nl80211_vendor_cmd_info *info;
2421                         struct nlattr *nested;
2422
2423                         nested = nla_nest_start_noflag(msg,
2424                                                        NL80211_ATTR_VENDOR_DATA);
2425                         if (!nested)
2426                                 goto nla_put_failure;
2427
2428                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2429                                 info = &rdev->wiphy.vendor_commands[i].info;
2430                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2431                                         goto nla_put_failure;
2432                         }
2433                         nla_nest_end(msg, nested);
2434                 }
2435
2436                 if (rdev->wiphy.n_vendor_events) {
2437                         const struct nl80211_vendor_cmd_info *info;
2438                         struct nlattr *nested;
2439
2440                         nested = nla_nest_start_noflag(msg,
2441                                                        NL80211_ATTR_VENDOR_EVENTS);
2442                         if (!nested)
2443                                 goto nla_put_failure;
2444
2445                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2446                                 info = &rdev->wiphy.vendor_events[i];
2447                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2448                                         goto nla_put_failure;
2449                         }
2450                         nla_nest_end(msg, nested);
2451                 }
2452                 state->split_start++;
2453                 break;
2454         case 12:
2455                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2456                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2457                                rdev->wiphy.max_num_csa_counters))
2458                         goto nla_put_failure;
2459
2460                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2461                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2462                         goto nla_put_failure;
2463
2464                 if (rdev->wiphy.max_sched_scan_reqs &&
2465                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2466                                 rdev->wiphy.max_sched_scan_reqs))
2467                         goto nla_put_failure;
2468
2469                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2470                             sizeof(rdev->wiphy.ext_features),
2471                             rdev->wiphy.ext_features))
2472                         goto nla_put_failure;
2473
2474                 if (rdev->wiphy.bss_select_support) {
2475                         struct nlattr *nested;
2476                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2477
2478                         nested = nla_nest_start_noflag(msg,
2479                                                        NL80211_ATTR_BSS_SELECT);
2480                         if (!nested)
2481                                 goto nla_put_failure;
2482
2483                         i = 0;
2484                         while (bss_select_support) {
2485                                 if ((bss_select_support & 1) &&
2486                                     nla_put_flag(msg, i))
2487                                         goto nla_put_failure;
2488                                 i++;
2489                                 bss_select_support >>= 1;
2490                         }
2491                         nla_nest_end(msg, nested);
2492                 }
2493
2494                 state->split_start++;
2495                 break;
2496         case 13:
2497                 if (rdev->wiphy.num_iftype_ext_capab &&
2498                     rdev->wiphy.iftype_ext_capab) {
2499                         struct nlattr *nested_ext_capab, *nested;
2500
2501                         nested = nla_nest_start_noflag(msg,
2502                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2503                         if (!nested)
2504                                 goto nla_put_failure;
2505
2506                         for (i = state->capa_start;
2507                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2508                                 const struct wiphy_iftype_ext_capab *capab;
2509
2510                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2511
2512                                 nested_ext_capab = nla_nest_start_noflag(msg,
2513                                                                          i);
2514                                 if (!nested_ext_capab ||
2515                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2516                                                 capab->iftype) ||
2517                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2518                                             capab->extended_capabilities_len,
2519                                             capab->extended_capabilities) ||
2520                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2521                                             capab->extended_capabilities_len,
2522                                             capab->extended_capabilities_mask))
2523                                         goto nla_put_failure;
2524
2525                                 nla_nest_end(msg, nested_ext_capab);
2526                                 if (state->split)
2527                                         break;
2528                         }
2529                         nla_nest_end(msg, nested);
2530                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2531                                 state->capa_start = i + 1;
2532                                 break;
2533                         }
2534                 }
2535
2536                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2537                                 rdev->wiphy.nan_supported_bands))
2538                         goto nla_put_failure;
2539
2540                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2541                                             NL80211_EXT_FEATURE_TXQS)) {
2542                         struct cfg80211_txq_stats txqstats = {};
2543                         int res;
2544
2545                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2546                         if (!res &&
2547                             !nl80211_put_txq_stats(msg, &txqstats,
2548                                                    NL80211_ATTR_TXQ_STATS))
2549                                 goto nla_put_failure;
2550
2551                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2552                                         rdev->wiphy.txq_limit))
2553                                 goto nla_put_failure;
2554                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2555                                         rdev->wiphy.txq_memory_limit))
2556                                 goto nla_put_failure;
2557                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2558                                         rdev->wiphy.txq_quantum))
2559                                 goto nla_put_failure;
2560                 }
2561
2562                 state->split_start++;
2563                 break;
2564         case 14:
2565                 if (nl80211_send_pmsr_capa(rdev, msg))
2566                         goto nla_put_failure;
2567
2568                 state->split_start++;
2569                 break;
2570         case 15:
2571                 if (rdev->wiphy.akm_suites &&
2572                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2573                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2574                             rdev->wiphy.akm_suites))
2575                         goto nla_put_failure;
2576
2577                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2578                         goto nla_put_failure;
2579
2580                 if (nl80211_put_tid_config_support(rdev, msg))
2581                         goto nla_put_failure;
2582
2583                 /* done */
2584                 state->split_start = 0;
2585                 break;
2586         }
2587  finish:
2588         genlmsg_end(msg, hdr);
2589         return 0;
2590
2591  nla_put_failure:
2592         genlmsg_cancel(msg, hdr);
2593         return -EMSGSIZE;
2594 }
2595
2596 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2597                                     struct netlink_callback *cb,
2598                                     struct nl80211_dump_wiphy_state *state)
2599 {
2600         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2601         int ret;
2602
2603         if (!tb)
2604                 return -ENOMEM;
2605
2606         ret = nlmsg_parse_deprecated(cb->nlh,
2607                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2608                                      tb, nl80211_fam.maxattr,
2609                                      nl80211_policy, NULL);
2610         /* ignore parse errors for backward compatibility */
2611         if (ret) {
2612                 ret = 0;
2613                 goto out;
2614         }
2615
2616         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2617         if (tb[NL80211_ATTR_WIPHY])
2618                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2619         if (tb[NL80211_ATTR_WDEV])
2620                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2621         if (tb[NL80211_ATTR_IFINDEX]) {
2622                 struct net_device *netdev;
2623                 struct cfg80211_registered_device *rdev;
2624                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2625
2626                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2627                 if (!netdev) {
2628                         ret = -ENODEV;
2629                         goto out;
2630                 }
2631                 if (netdev->ieee80211_ptr) {
2632                         rdev = wiphy_to_rdev(
2633                                 netdev->ieee80211_ptr->wiphy);
2634                         state->filter_wiphy = rdev->wiphy_idx;
2635                 }
2636         }
2637
2638         ret = 0;
2639 out:
2640         kfree(tb);
2641         return ret;
2642 }
2643
2644 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2645 {
2646         int idx = 0, ret;
2647         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2648         struct cfg80211_registered_device *rdev;
2649
2650         rtnl_lock();
2651         if (!state) {
2652                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2653                 if (!state) {
2654                         rtnl_unlock();
2655                         return -ENOMEM;
2656                 }
2657                 state->filter_wiphy = -1;
2658                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2659                 if (ret) {
2660                         kfree(state);
2661                         rtnl_unlock();
2662                         return ret;
2663                 }
2664                 cb->args[0] = (long)state;
2665         }
2666
2667         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2668                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2669                         continue;
2670                 if (++idx <= state->start)
2671                         continue;
2672                 if (state->filter_wiphy != -1 &&
2673                     state->filter_wiphy != rdev->wiphy_idx)
2674                         continue;
2675                 /* attempt to fit multiple wiphy data chunks into the skb */
2676                 do {
2677                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2678                                                  skb,
2679                                                  NETLINK_CB(cb->skb).portid,
2680                                                  cb->nlh->nlmsg_seq,
2681                                                  NLM_F_MULTI, state);
2682                         if (ret < 0) {
2683                                 /*
2684                                  * If sending the wiphy data didn't fit (ENOBUFS
2685                                  * or EMSGSIZE returned), this SKB is still
2686                                  * empty (so it's not too big because another
2687                                  * wiphy dataset is already in the skb) and
2688                                  * we've not tried to adjust the dump allocation
2689                                  * yet ... then adjust the alloc size to be
2690                                  * bigger, and return 1 but with the empty skb.
2691                                  * This results in an empty message being RX'ed
2692                                  * in userspace, but that is ignored.
2693                                  *
2694                                  * We can then retry with the larger buffer.
2695                                  */
2696                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2697                                     !skb->len && !state->split &&
2698                                     cb->min_dump_alloc < 4096) {
2699                                         cb->min_dump_alloc = 4096;
2700                                         state->split_start = 0;
2701                                         rtnl_unlock();
2702                                         return 1;
2703                                 }
2704                                 idx--;
2705                                 break;
2706                         }
2707                 } while (state->split_start > 0);
2708                 break;
2709         }
2710         rtnl_unlock();
2711
2712         state->start = idx;
2713
2714         return skb->len;
2715 }
2716
2717 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2718 {
2719         kfree((void *)cb->args[0]);
2720         return 0;
2721 }
2722
2723 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2724 {
2725         struct sk_buff *msg;
2726         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2727         struct nl80211_dump_wiphy_state state = {};
2728
2729         msg = nlmsg_new(4096, GFP_KERNEL);
2730         if (!msg)
2731                 return -ENOMEM;
2732
2733         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2734                                info->snd_portid, info->snd_seq, 0,
2735                                &state) < 0) {
2736                 nlmsg_free(msg);
2737                 return -ENOBUFS;
2738         }
2739
2740         return genlmsg_reply(msg, info);
2741 }
2742
2743 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2744         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2745         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2746         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2747         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2748         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2749 };
2750
2751 static int parse_txq_params(struct nlattr *tb[],
2752                             struct ieee80211_txq_params *txq_params)
2753 {
2754         u8 ac;
2755
2756         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2757             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2758             !tb[NL80211_TXQ_ATTR_AIFS])
2759                 return -EINVAL;
2760
2761         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2762         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2763         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2764         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2765         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2766
2767         if (ac >= NL80211_NUM_ACS)
2768                 return -EINVAL;
2769         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2770         return 0;
2771 }
2772
2773 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2774 {
2775         /*
2776          * You can only set the channel explicitly for WDS interfaces,
2777          * all others have their channel managed via their respective
2778          * "establish a connection" command (connect, join, ...)
2779          *
2780          * For AP/GO and mesh mode, the channel can be set with the
2781          * channel userspace API, but is only stored and passed to the
2782          * low-level driver when the AP starts or the mesh is joined.
2783          * This is for backward compatibility, userspace can also give
2784          * the channel in the start-ap or join-mesh commands instead.
2785          *
2786          * Monitors are special as they are normally slaved to
2787          * whatever else is going on, so they have their own special
2788          * operation to set the monitor channel if possible.
2789          */
2790         return !wdev ||
2791                 wdev->iftype == NL80211_IFTYPE_AP ||
2792                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2793                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2794                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2795 }
2796
2797 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2798                           struct genl_info *info,
2799                           struct cfg80211_chan_def *chandef)
2800 {
2801         struct netlink_ext_ack *extack = info->extack;
2802         struct nlattr **attrs = info->attrs;
2803         u32 control_freq;
2804
2805         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2806                 return -EINVAL;
2807
2808         control_freq = MHZ_TO_KHZ(
2809                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2810         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2811                 control_freq +=
2812                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2813
2814         memset(chandef, 0, sizeof(*chandef));
2815         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2816         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2817         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2818         chandef->freq1_offset = control_freq % 1000;
2819         chandef->center_freq2 = 0;
2820
2821         /* Primary channel not allowed */
2822         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2823                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2824                                     "Channel is disabled");
2825                 return -EINVAL;
2826         }
2827
2828         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2829                 enum nl80211_channel_type chantype;
2830
2831                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2832
2833                 switch (chantype) {
2834                 case NL80211_CHAN_NO_HT:
2835                 case NL80211_CHAN_HT20:
2836                 case NL80211_CHAN_HT40PLUS:
2837                 case NL80211_CHAN_HT40MINUS:
2838                         cfg80211_chandef_create(chandef, chandef->chan,
2839                                                 chantype);
2840                         /* user input for center_freq is incorrect */
2841                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2842                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2843                                 NL_SET_ERR_MSG_ATTR(extack,
2844                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2845                                                     "bad center frequency 1");
2846                                 return -EINVAL;
2847                         }
2848                         /* center_freq2 must be zero */
2849                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2850                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2851                                 NL_SET_ERR_MSG_ATTR(extack,
2852                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2853                                                     "center frequency 2 can't be used");
2854                                 return -EINVAL;
2855                         }
2856                         break;
2857                 default:
2858                         NL_SET_ERR_MSG_ATTR(extack,
2859                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2860                                             "invalid channel type");
2861                         return -EINVAL;
2862                 }
2863         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2864                 chandef->width =
2865                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2866                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2867                         chandef->center_freq1 =
2868                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2869                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2870                                 chandef->freq1_offset = nla_get_u32(
2871                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2872                         else
2873                                 chandef->freq1_offset = 0;
2874                 }
2875                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2876                         chandef->center_freq2 =
2877                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2878         }
2879
2880         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2881                 chandef->edmg.channels =
2882                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2883
2884                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2885                         chandef->edmg.bw_config =
2886                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2887         } else {
2888                 chandef->edmg.bw_config = 0;
2889                 chandef->edmg.channels = 0;
2890         }
2891
2892         if (!cfg80211_chandef_valid(chandef)) {
2893                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2894                 return -EINVAL;
2895         }
2896
2897         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2898                                      IEEE80211_CHAN_DISABLED)) {
2899                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2900                 return -EINVAL;
2901         }
2902
2903         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2904              chandef->width == NL80211_CHAN_WIDTH_10) &&
2905             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2906                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2907                 return -EINVAL;
2908         }
2909
2910         return 0;
2911 }
2912
2913 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2914                                  struct net_device *dev,
2915                                  struct genl_info *info)
2916 {
2917         struct cfg80211_chan_def chandef;
2918         int result;
2919         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2920         struct wireless_dev *wdev = NULL;
2921
2922         if (dev)
2923                 wdev = dev->ieee80211_ptr;
2924         if (!nl80211_can_set_dev_channel(wdev))
2925                 return -EOPNOTSUPP;
2926         if (wdev)
2927                 iftype = wdev->iftype;
2928
2929         result = nl80211_parse_chandef(rdev, info, &chandef);
2930         if (result)
2931                 return result;
2932
2933         switch (iftype) {
2934         case NL80211_IFTYPE_AP:
2935         case NL80211_IFTYPE_P2P_GO:
2936                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2937                                                    iftype)) {
2938                         result = -EINVAL;
2939                         break;
2940                 }
2941                 if (wdev->beacon_interval) {
2942                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2943                             !(rdev->wiphy.features &
2944                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2945                                 result = -EBUSY;
2946                                 break;
2947                         }
2948
2949                         /* Only allow dynamic channel width changes */
2950                         if (chandef.chan != wdev->preset_chandef.chan) {
2951                                 result = -EBUSY;
2952                                 break;
2953                         }
2954                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2955                         if (result)
2956                                 break;
2957                 }
2958                 wdev->preset_chandef = chandef;
2959                 result = 0;
2960                 break;
2961         case NL80211_IFTYPE_MESH_POINT:
2962                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2963                 break;
2964         case NL80211_IFTYPE_MONITOR:
2965                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2966                 break;
2967         default:
2968                 result = -EINVAL;
2969         }
2970
2971         return result;
2972 }
2973
2974 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2975 {
2976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2977         struct net_device *netdev = info->user_ptr[1];
2978
2979         return __nl80211_set_channel(rdev, netdev, info);
2980 }
2981
2982 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2983 {
2984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2985         struct net_device *dev = info->user_ptr[1];
2986         struct wireless_dev *wdev = dev->ieee80211_ptr;
2987         const u8 *bssid;
2988
2989         if (!info->attrs[NL80211_ATTR_MAC])
2990                 return -EINVAL;
2991
2992         if (netif_running(dev))
2993                 return -EBUSY;
2994
2995         if (!rdev->ops->set_wds_peer)
2996                 return -EOPNOTSUPP;
2997
2998         if (wdev->iftype != NL80211_IFTYPE_WDS)
2999                 return -EOPNOTSUPP;
3000
3001         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3002         return rdev_set_wds_peer(rdev, dev, bssid);
3003 }
3004
3005 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3006 {
3007         struct cfg80211_registered_device *rdev;
3008         struct net_device *netdev = NULL;
3009         struct wireless_dev *wdev;
3010         int result = 0, rem_txq_params = 0;
3011         struct nlattr *nl_txq_params;
3012         u32 changed;
3013         u8 retry_short = 0, retry_long = 0;
3014         u32 frag_threshold = 0, rts_threshold = 0;
3015         u8 coverage_class = 0;
3016         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3017
3018         ASSERT_RTNL();
3019
3020         /*
3021          * Try to find the wiphy and netdev. Normally this
3022          * function shouldn't need the netdev, but this is
3023          * done for backward compatibility -- previously
3024          * setting the channel was done per wiphy, but now
3025          * it is per netdev. Previous userland like hostapd
3026          * also passed a netdev to set_wiphy, so that it is
3027          * possible to let that go to the right netdev!
3028          */
3029
3030         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3031                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3032
3033                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3034                 if (netdev && netdev->ieee80211_ptr)
3035                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3036                 else
3037                         netdev = NULL;
3038         }
3039
3040         if (!netdev) {
3041                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3042                                                   info->attrs);
3043                 if (IS_ERR(rdev))
3044                         return PTR_ERR(rdev);
3045                 wdev = NULL;
3046                 netdev = NULL;
3047                 result = 0;
3048         } else
3049                 wdev = netdev->ieee80211_ptr;
3050
3051         /*
3052          * end workaround code, by now the rdev is available
3053          * and locked, and wdev may or may not be NULL.
3054          */
3055
3056         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3057                 result = cfg80211_dev_rename(
3058                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3059
3060         if (result)
3061                 return result;
3062
3063         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3064                 struct ieee80211_txq_params txq_params;
3065                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3066
3067                 if (!rdev->ops->set_txq_params)
3068                         return -EOPNOTSUPP;
3069
3070                 if (!netdev)
3071                         return -EINVAL;
3072
3073                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3074                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3075                         return -EINVAL;
3076
3077                 if (!netif_running(netdev))
3078                         return -ENETDOWN;
3079
3080                 nla_for_each_nested(nl_txq_params,
3081                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3082                                     rem_txq_params) {
3083                         result = nla_parse_nested_deprecated(tb,
3084                                                              NL80211_TXQ_ATTR_MAX,
3085                                                              nl_txq_params,
3086                                                              txq_params_policy,
3087                                                              info->extack);
3088                         if (result)
3089                                 return result;
3090                         result = parse_txq_params(tb, &txq_params);
3091                         if (result)
3092                                 return result;
3093
3094                         result = rdev_set_txq_params(rdev, netdev,
3095                                                      &txq_params);
3096                         if (result)
3097                                 return result;
3098                 }
3099         }
3100
3101         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3102                 result = __nl80211_set_channel(
3103                         rdev,
3104                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3105                         info);
3106                 if (result)
3107                         return result;
3108         }
3109
3110         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3111                 struct wireless_dev *txp_wdev = wdev;
3112                 enum nl80211_tx_power_setting type;
3113                 int idx, mbm = 0;
3114
3115                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3116                         txp_wdev = NULL;
3117
3118                 if (!rdev->ops->set_tx_power)
3119                         return -EOPNOTSUPP;
3120
3121                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3122                 type = nla_get_u32(info->attrs[idx]);
3123
3124                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3125                     (type != NL80211_TX_POWER_AUTOMATIC))
3126                         return -EINVAL;
3127
3128                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3129                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3130                         mbm = nla_get_u32(info->attrs[idx]);
3131                 }
3132
3133                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3134                 if (result)
3135                         return result;
3136         }
3137
3138         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3139             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3140                 u32 tx_ant, rx_ant;
3141
3142                 if ((!rdev->wiphy.available_antennas_tx &&
3143                      !rdev->wiphy.available_antennas_rx) ||
3144                     !rdev->ops->set_antenna)
3145                         return -EOPNOTSUPP;
3146
3147                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3148                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3149
3150                 /* reject antenna configurations which don't match the
3151                  * available antenna masks, except for the "all" mask */
3152                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3153                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3154                         return -EINVAL;
3155
3156                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3157                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3158
3159                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3160                 if (result)
3161                         return result;
3162         }
3163
3164         changed = 0;
3165
3166         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3167                 retry_short = nla_get_u8(
3168                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3169
3170                 changed |= WIPHY_PARAM_RETRY_SHORT;
3171         }
3172
3173         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3174                 retry_long = nla_get_u8(
3175                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3176
3177                 changed |= WIPHY_PARAM_RETRY_LONG;
3178         }
3179
3180         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3181                 frag_threshold = nla_get_u32(
3182                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3183                 if (frag_threshold < 256)
3184                         return -EINVAL;
3185
3186                 if (frag_threshold != (u32) -1) {
3187                         /*
3188                          * Fragments (apart from the last one) are required to
3189                          * have even length. Make the fragmentation code
3190                          * simpler by stripping LSB should someone try to use
3191                          * odd threshold value.
3192                          */
3193                         frag_threshold &= ~0x1;
3194                 }
3195                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3196         }
3197
3198         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3199                 rts_threshold = nla_get_u32(
3200                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3201                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3202         }
3203
3204         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3205                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3206                         return -EINVAL;
3207
3208                 coverage_class = nla_get_u8(
3209                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3210                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3211         }
3212
3213         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3214                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3215                         return -EOPNOTSUPP;
3216
3217                 changed |= WIPHY_PARAM_DYN_ACK;
3218         }
3219
3220         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3221                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3222                                              NL80211_EXT_FEATURE_TXQS))
3223                         return -EOPNOTSUPP;
3224                 txq_limit = nla_get_u32(
3225                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3226                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3227         }
3228
3229         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3230                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3231                                              NL80211_EXT_FEATURE_TXQS))
3232                         return -EOPNOTSUPP;
3233                 txq_memory_limit = nla_get_u32(
3234                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3235                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3236         }
3237
3238         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3239                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3240                                              NL80211_EXT_FEATURE_TXQS))
3241                         return -EOPNOTSUPP;
3242                 txq_quantum = nla_get_u32(
3243                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3244                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3245         }
3246
3247         if (changed) {
3248                 u8 old_retry_short, old_retry_long;
3249                 u32 old_frag_threshold, old_rts_threshold;
3250                 u8 old_coverage_class;
3251                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3252
3253                 if (!rdev->ops->set_wiphy_params)
3254                         return -EOPNOTSUPP;
3255
3256                 old_retry_short = rdev->wiphy.retry_short;
3257                 old_retry_long = rdev->wiphy.retry_long;
3258                 old_frag_threshold = rdev->wiphy.frag_threshold;
3259                 old_rts_threshold = rdev->wiphy.rts_threshold;
3260                 old_coverage_class = rdev->wiphy.coverage_class;
3261                 old_txq_limit = rdev->wiphy.txq_limit;
3262                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3263                 old_txq_quantum = rdev->wiphy.txq_quantum;
3264
3265                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3266                         rdev->wiphy.retry_short = retry_short;
3267                 if (changed & WIPHY_PARAM_RETRY_LONG)
3268                         rdev->wiphy.retry_long = retry_long;
3269                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3270                         rdev->wiphy.frag_threshold = frag_threshold;
3271                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3272                         rdev->wiphy.rts_threshold = rts_threshold;
3273                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3274                         rdev->wiphy.coverage_class = coverage_class;
3275                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3276                         rdev->wiphy.txq_limit = txq_limit;
3277                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3278                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3279                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3280                         rdev->wiphy.txq_quantum = txq_quantum;
3281
3282                 result = rdev_set_wiphy_params(rdev, changed);
3283                 if (result) {
3284                         rdev->wiphy.retry_short = old_retry_short;
3285                         rdev->wiphy.retry_long = old_retry_long;
3286                         rdev->wiphy.frag_threshold = old_frag_threshold;
3287                         rdev->wiphy.rts_threshold = old_rts_threshold;
3288                         rdev->wiphy.coverage_class = old_coverage_class;
3289                         rdev->wiphy.txq_limit = old_txq_limit;
3290                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3291                         rdev->wiphy.txq_quantum = old_txq_quantum;
3292                         return result;
3293                 }
3294         }
3295         return 0;
3296 }
3297
3298 static int nl80211_send_chandef(struct sk_buff *msg,
3299                                 const struct cfg80211_chan_def *chandef)
3300 {
3301         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3302                 return -EINVAL;
3303
3304         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3305                         chandef->chan->center_freq))
3306                 return -ENOBUFS;
3307         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3308                         chandef->chan->freq_offset))
3309                 return -ENOBUFS;
3310         switch (chandef->width) {
3311         case NL80211_CHAN_WIDTH_20_NOHT:
3312         case NL80211_CHAN_WIDTH_20:
3313         case NL80211_CHAN_WIDTH_40:
3314                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3315                                 cfg80211_get_chandef_type(chandef)))
3316                         return -ENOBUFS;
3317                 break;
3318         default:
3319                 break;
3320         }
3321         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3322                 return -ENOBUFS;
3323         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3324                 return -ENOBUFS;
3325         if (chandef->center_freq2 &&
3326             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3327                 return -ENOBUFS;
3328         return 0;
3329 }
3330
3331 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3332                               struct cfg80211_registered_device *rdev,
3333                               struct wireless_dev *wdev,
3334                               enum nl80211_commands cmd)
3335 {
3336         struct net_device *dev = wdev->netdev;
3337         void *hdr;
3338
3339         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3340                 cmd != NL80211_CMD_DEL_INTERFACE &&
3341                 cmd != NL80211_CMD_SET_INTERFACE);
3342
3343         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3344         if (!hdr)
3345                 return -1;
3346
3347         if (dev &&
3348             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3349              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3350                 goto nla_put_failure;
3351
3352         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3353             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3354             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3355                               NL80211_ATTR_PAD) ||
3356             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3357             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3358                         rdev->devlist_generation ^
3359                         (cfg80211_rdev_list_generation << 2)) ||
3360             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3361                 goto nla_put_failure;
3362
3363         if (rdev->ops->get_channel) {
3364                 int ret;
3365                 struct cfg80211_chan_def chandef = {};
3366
3367                 ret = rdev_get_channel(rdev, wdev, &chandef);
3368                 if (ret == 0) {
3369                         if (nl80211_send_chandef(msg, &chandef))
3370                                 goto nla_put_failure;
3371                 }
3372         }
3373
3374         if (rdev->ops->get_tx_power) {
3375                 int dbm, ret;
3376
3377                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3378                 if (ret == 0 &&
3379                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3380                                 DBM_TO_MBM(dbm)))
3381                         goto nla_put_failure;
3382         }
3383
3384         wdev_lock(wdev);
3385         switch (wdev->iftype) {
3386         case NL80211_IFTYPE_AP:
3387                 if (wdev->ssid_len &&
3388                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3389                         goto nla_put_failure_locked;
3390                 break;
3391         case NL80211_IFTYPE_STATION:
3392         case NL80211_IFTYPE_P2P_CLIENT:
3393         case NL80211_IFTYPE_ADHOC: {
3394                 const u8 *ssid_ie;
3395                 if (!wdev->current_bss)
3396                         break;
3397                 rcu_read_lock();
3398                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3399                                                WLAN_EID_SSID);
3400                 if (ssid_ie &&
3401                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3402                         goto nla_put_failure_rcu_locked;
3403                 rcu_read_unlock();
3404                 break;
3405                 }
3406         default:
3407                 /* nothing */
3408                 break;
3409         }
3410         wdev_unlock(wdev);
3411
3412         if (rdev->ops->get_txq_stats) {
3413                 struct cfg80211_txq_stats txqstats = {};
3414                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3415
3416                 if (ret == 0 &&
3417                     !nl80211_put_txq_stats(msg, &txqstats,
3418                                            NL80211_ATTR_TXQ_STATS))
3419                         goto nla_put_failure;
3420         }
3421
3422         genlmsg_end(msg, hdr);
3423         return 0;
3424
3425  nla_put_failure_rcu_locked:
3426         rcu_read_unlock();
3427  nla_put_failure_locked:
3428         wdev_unlock(wdev);
3429  nla_put_failure:
3430         genlmsg_cancel(msg, hdr);
3431         return -EMSGSIZE;
3432 }
3433
3434 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3435 {
3436         int wp_idx = 0;
3437         int if_idx = 0;
3438         int wp_start = cb->args[0];
3439         int if_start = cb->args[1];
3440         int filter_wiphy = -1;
3441         struct cfg80211_registered_device *rdev;
3442         struct wireless_dev *wdev;
3443         int ret;
3444
3445         rtnl_lock();
3446         if (!cb->args[2]) {
3447                 struct nl80211_dump_wiphy_state state = {
3448                         .filter_wiphy = -1,
3449                 };
3450
3451                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3452                 if (ret)
3453                         goto out_unlock;
3454
3455                 filter_wiphy = state.filter_wiphy;
3456
3457                 /*
3458                  * if filtering, set cb->args[2] to +1 since 0 is the default
3459                  * value needed to determine that parsing is necessary.
3460                  */
3461                 if (filter_wiphy >= 0)
3462                         cb->args[2] = filter_wiphy + 1;
3463                 else
3464                         cb->args[2] = -1;
3465         } else if (cb->args[2] > 0) {
3466                 filter_wiphy = cb->args[2] - 1;
3467         }
3468
3469         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3470                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3471                         continue;
3472                 if (wp_idx < wp_start) {
3473                         wp_idx++;
3474                         continue;
3475                 }
3476
3477                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3478                         continue;
3479
3480                 if_idx = 0;
3481
3482                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3483                         if (if_idx < if_start) {
3484                                 if_idx++;
3485                                 continue;
3486                         }
3487                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3488                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3489                                                rdev, wdev,
3490                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3491                                 goto out;
3492                         }
3493                         if_idx++;
3494                 }
3495
3496                 wp_idx++;
3497         }
3498  out:
3499         cb->args[0] = wp_idx;
3500         cb->args[1] = if_idx;
3501
3502         ret = skb->len;
3503  out_unlock:
3504         rtnl_unlock();
3505
3506         return ret;
3507 }
3508
3509 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3510 {
3511         struct sk_buff *msg;
3512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3513         struct wireless_dev *wdev = info->user_ptr[1];
3514
3515         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3516         if (!msg)
3517                 return -ENOMEM;
3518
3519         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3520                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3521                 nlmsg_free(msg);
3522                 return -ENOBUFS;
3523         }
3524
3525         return genlmsg_reply(msg, info);
3526 }
3527
3528 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3529         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3530         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3531         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3532         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3533         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3534         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3535 };
3536
3537 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3538 {
3539         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3540         int flag;
3541
3542         *mntrflags = 0;
3543
3544         if (!nla)
3545                 return -EINVAL;
3546
3547         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3548                 return -EINVAL;
3549
3550         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3551                 if (flags[flag])
3552                         *mntrflags |= (1<<flag);
3553
3554         *mntrflags |= MONITOR_FLAG_CHANGED;
3555
3556         return 0;
3557 }
3558
3559 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3560                                      enum nl80211_iftype type,
3561                                      struct genl_info *info,
3562                                      struct vif_params *params)
3563 {
3564         bool change = false;
3565         int err;
3566
3567         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3568                 if (type != NL80211_IFTYPE_MONITOR)
3569                         return -EINVAL;
3570
3571                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3572                                           &params->flags);
3573                 if (err)
3574                         return err;
3575
3576                 change = true;
3577         }
3578
3579         if (params->flags & MONITOR_FLAG_ACTIVE &&
3580             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3581                 return -EOPNOTSUPP;
3582
3583         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3584                 const u8 *mumimo_groups;
3585                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3586
3587                 if (type != NL80211_IFTYPE_MONITOR)
3588                         return -EINVAL;
3589
3590                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3591                         return -EOPNOTSUPP;
3592
3593                 mumimo_groups =
3594                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3595
3596                 /* bits 0 and 63 are reserved and must be zero */
3597                 if ((mumimo_groups[0] & BIT(0)) ||
3598                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3599                         return -EINVAL;
3600
3601                 params->vht_mumimo_groups = mumimo_groups;
3602                 change = true;
3603         }
3604
3605         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3606                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3607
3608                 if (type != NL80211_IFTYPE_MONITOR)
3609                         return -EINVAL;
3610
3611                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3612                         return -EOPNOTSUPP;
3613
3614                 params->vht_mumimo_follow_addr =
3615                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3616                 change = true;
3617         }
3618
3619         return change ? 1 : 0;
3620 }
3621
3622 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3623                                struct net_device *netdev, u8 use_4addr,
3624                                enum nl80211_iftype iftype)
3625 {
3626         if (!use_4addr) {
3627                 if (netdev && netif_is_bridge_port(netdev))
3628                         return -EBUSY;
3629                 return 0;
3630         }
3631
3632         switch (iftype) {
3633         case NL80211_IFTYPE_AP_VLAN:
3634                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3635                         return 0;
3636                 break;
3637         case NL80211_IFTYPE_STATION:
3638                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3639                         return 0;
3640                 break;
3641         default:
3642                 break;
3643         }
3644
3645         return -EOPNOTSUPP;
3646 }
3647
3648 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3649 {
3650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3651         struct vif_params params;
3652         int err;
3653         enum nl80211_iftype otype, ntype;
3654         struct net_device *dev = info->user_ptr[1];
3655         bool change = false;
3656
3657         memset(&params, 0, sizeof(params));
3658
3659         otype = ntype = dev->ieee80211_ptr->iftype;
3660
3661         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3662                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3663                 if (otype != ntype)
3664                         change = true;
3665         }
3666
3667         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3668                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3669
3670                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3671                         return -EINVAL;
3672                 if (netif_running(dev))
3673                         return -EBUSY;
3674
3675                 wdev_lock(wdev);
3676                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3677                              IEEE80211_MAX_MESH_ID_LEN);
3678                 wdev->mesh_id_up_len =
3679                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3680                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3681                        wdev->mesh_id_up_len);
3682                 wdev_unlock(wdev);
3683         }
3684
3685         if (info->attrs[NL80211_ATTR_4ADDR]) {
3686                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3687                 change = true;
3688                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3689                 if (err)
3690                         return err;
3691         } else {
3692                 params.use_4addr = -1;
3693         }
3694
3695         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3696         if (err < 0)
3697                 return err;
3698         if (err > 0)
3699                 change = true;
3700
3701         if (change)
3702                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3703         else
3704                 err = 0;
3705
3706         if (!err && params.use_4addr != -1)
3707                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3708
3709         if (change && !err) {
3710                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3711
3712                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3713         }
3714
3715         return err;
3716 }
3717
3718 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3719 {
3720         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3721         struct vif_params params;
3722         struct wireless_dev *wdev;
3723         struct sk_buff *msg;
3724         int err;
3725         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3726
3727         /* to avoid failing a new interface creation due to pending removal */
3728         cfg80211_destroy_ifaces(rdev);
3729
3730         memset(&params, 0, sizeof(params));
3731
3732         if (!info->attrs[NL80211_ATTR_IFNAME])
3733                 return -EINVAL;
3734
3735         if (info->attrs[NL80211_ATTR_IFTYPE])
3736                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3737
3738         if (!rdev->ops->add_virtual_intf)
3739                 return -EOPNOTSUPP;
3740
3741         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3742              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3743             info->attrs[NL80211_ATTR_MAC]) {
3744                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3745                            ETH_ALEN);
3746                 if (!is_valid_ether_addr(params.macaddr))
3747                         return -EADDRNOTAVAIL;
3748         }
3749
3750         if (info->attrs[NL80211_ATTR_4ADDR]) {
3751                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3752                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3753                 if (err)
3754                         return err;
3755         }
3756
3757         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3758                 return -EOPNOTSUPP;
3759
3760         err = nl80211_parse_mon_options(rdev, type, info, &params);
3761         if (err < 0)
3762                 return err;
3763
3764         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3765         if (!msg)
3766                 return -ENOMEM;
3767
3768         wdev = rdev_add_virtual_intf(rdev,
3769                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3770                                 NET_NAME_USER, type, &params);
3771         if (WARN_ON(!wdev)) {
3772                 nlmsg_free(msg);
3773                 return -EPROTO;
3774         } else if (IS_ERR(wdev)) {
3775                 nlmsg_free(msg);
3776                 return PTR_ERR(wdev);
3777         }
3778
3779         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3780                 wdev->owner_nlportid = info->snd_portid;
3781
3782         switch (type) {
3783         case NL80211_IFTYPE_MESH_POINT:
3784                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3785                         break;
3786                 wdev_lock(wdev);
3787                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3788                              IEEE80211_MAX_MESH_ID_LEN);
3789                 wdev->mesh_id_up_len =
3790                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3791                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3792                        wdev->mesh_id_up_len);
3793                 wdev_unlock(wdev);
3794                 break;
3795         case NL80211_IFTYPE_NAN:
3796         case NL80211_IFTYPE_P2P_DEVICE:
3797                 /*
3798                  * P2P Device and NAN do not have a netdev, so don't go
3799                  * through the netdev notifier and must be added here
3800                  */
3801                 cfg80211_init_wdev(rdev, wdev);
3802                 break;
3803         default:
3804                 break;
3805         }
3806
3807         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3808                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3809                 nlmsg_free(msg);
3810                 return -ENOBUFS;
3811         }
3812
3813         return genlmsg_reply(msg, info);
3814 }
3815
3816 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3817 {
3818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3819         struct wireless_dev *wdev = info->user_ptr[1];
3820
3821         if (!rdev->ops->del_virtual_intf)
3822                 return -EOPNOTSUPP;
3823
3824         /*
3825          * If we remove a wireless device without a netdev then clear
3826          * user_ptr[1] so that nl80211_post_doit won't dereference it
3827          * to check if it needs to do dev_put(). Otherwise it crashes
3828          * since the wdev has been freed, unlike with a netdev where
3829          * we need the dev_put() for the netdev to really be freed.
3830          */
3831         if (!wdev->netdev)
3832                 info->user_ptr[1] = NULL;
3833
3834         return rdev_del_virtual_intf(rdev, wdev);
3835 }
3836
3837 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3838 {
3839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3840         struct net_device *dev = info->user_ptr[1];
3841         u16 noack_map;
3842
3843         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3844                 return -EINVAL;
3845
3846         if (!rdev->ops->set_noack_map)
3847                 return -EOPNOTSUPP;
3848
3849         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3850
3851         return rdev_set_noack_map(rdev, dev, noack_map);
3852 }
3853
3854 struct get_key_cookie {
3855         struct sk_buff *msg;
3856         int error;
3857         int idx;
3858 };
3859
3860 static void get_key_callback(void *c, struct key_params *params)
3861 {
3862         struct nlattr *key;
3863         struct get_key_cookie *cookie = c;
3864
3865         if ((params->key &&
3866              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3867                      params->key_len, params->key)) ||
3868             (params->seq &&
3869              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3870                      params->seq_len, params->seq)) ||
3871             (params->cipher &&
3872              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3873                          params->cipher)))
3874                 goto nla_put_failure;
3875
3876         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3877         if (!key)
3878                 goto nla_put_failure;
3879
3880         if ((params->key &&
3881              nla_put(cookie->msg, NL80211_KEY_DATA,
3882                      params->key_len, params->key)) ||
3883             (params->seq &&
3884              nla_put(cookie->msg, NL80211_KEY_SEQ,
3885                      params->seq_len, params->seq)) ||
3886             (params->cipher &&
3887              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3888                          params->cipher)))
3889                 goto nla_put_failure;
3890
3891         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3892                 goto nla_put_failure;
3893
3894         nla_nest_end(cookie->msg, key);
3895
3896         return;
3897  nla_put_failure:
3898         cookie->error = 1;
3899 }
3900
3901 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3902 {
3903         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3904         int err;
3905         struct net_device *dev = info->user_ptr[1];
3906         u8 key_idx = 0;
3907         const u8 *mac_addr = NULL;
3908         bool pairwise;
3909         struct get_key_cookie cookie = {
3910                 .error = 0,
3911         };
3912         void *hdr;
3913         struct sk_buff *msg;
3914         bool bigtk_support = false;
3915
3916         if (wiphy_ext_feature_isset(&rdev->wiphy,
3917                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
3918                 bigtk_support = true;
3919
3920         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
3921              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
3922             wiphy_ext_feature_isset(&rdev->wiphy,
3923                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
3924                 bigtk_support = true;
3925
3926         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3927                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3928
3929                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
3930                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
3931                         return -EINVAL;
3932                 }
3933         }
3934
3935         if (info->attrs[NL80211_ATTR_MAC])
3936                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3937
3938         pairwise = !!mac_addr;
3939         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3940                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3941
3942                 if (kt != NL80211_KEYTYPE_GROUP &&
3943                     kt != NL80211_KEYTYPE_PAIRWISE)
3944                         return -EINVAL;
3945                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3946         }
3947
3948         if (!rdev->ops->get_key)
3949                 return -EOPNOTSUPP;
3950
3951         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3952                 return -ENOENT;
3953
3954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3955         if (!msg)
3956                 return -ENOMEM;
3957
3958         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3959                              NL80211_CMD_NEW_KEY);
3960         if (!hdr)
3961                 goto nla_put_failure;
3962
3963         cookie.msg = msg;
3964         cookie.idx = key_idx;
3965
3966         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3967             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3968                 goto nla_put_failure;
3969         if (mac_addr &&
3970             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3971                 goto nla_put_failure;
3972
3973         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3974                            get_key_callback);
3975
3976         if (err)
3977                 goto free_msg;
3978
3979         if (cookie.error)
3980                 goto nla_put_failure;
3981
3982         genlmsg_end(msg, hdr);
3983         return genlmsg_reply(msg, info);
3984
3985  nla_put_failure:
3986         err = -ENOBUFS;
3987  free_msg:
3988         nlmsg_free(msg);
3989         return err;
3990 }
3991
3992 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3993 {
3994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3995         struct key_parse key;
3996         int err;
3997         struct net_device *dev = info->user_ptr[1];
3998
3999         err = nl80211_parse_key(info, &key);
4000         if (err)
4001                 return err;
4002
4003         if (key.idx < 0)
4004                 return -EINVAL;
4005
4006         /* Only support setting default key and
4007          * Extended Key ID action NL80211_KEY_SET_TX.
4008          */
4009         if (!key.def && !key.defmgmt && !key.defbeacon &&
4010             !(key.p.mode == NL80211_KEY_SET_TX))
4011                 return -EINVAL;
4012
4013         wdev_lock(dev->ieee80211_ptr);
4014
4015         if (key.def) {
4016                 if (!rdev->ops->set_default_key) {
4017                         err = -EOPNOTSUPP;
4018                         goto out;
4019                 }
4020
4021                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4022                 if (err)
4023                         goto out;
4024
4025                 err = rdev_set_default_key(rdev, dev, key.idx,
4026                                                  key.def_uni, key.def_multi);
4027
4028                 if (err)
4029                         goto out;
4030
4031 #ifdef CONFIG_CFG80211_WEXT
4032                 dev->ieee80211_ptr->wext.default_key = key.idx;
4033 #endif
4034         } else if (key.defmgmt) {
4035                 if (key.def_uni || !key.def_multi) {
4036                         err = -EINVAL;
4037                         goto out;
4038                 }
4039
4040                 if (!rdev->ops->set_default_mgmt_key) {
4041                         err = -EOPNOTSUPP;
4042                         goto out;
4043                 }
4044
4045                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4046                 if (err)
4047                         goto out;
4048
4049                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4050                 if (err)
4051                         goto out;
4052
4053 #ifdef CONFIG_CFG80211_WEXT
4054                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4055 #endif
4056         } else if (key.defbeacon) {
4057                 if (key.def_uni || !key.def_multi) {
4058                         err = -EINVAL;
4059                         goto out;
4060                 }
4061
4062                 if (!rdev->ops->set_default_beacon_key) {
4063                         err = -EOPNOTSUPP;
4064                         goto out;
4065                 }
4066
4067                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4068                 if (err)
4069                         goto out;
4070
4071                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4072                 if (err)
4073                         goto out;
4074         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4075                    wiphy_ext_feature_isset(&rdev->wiphy,
4076                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4077                 u8 *mac_addr = NULL;
4078
4079                 if (info->attrs[NL80211_ATTR_MAC])
4080                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4081
4082                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4083                         err = -EINVAL;
4084                         goto out;
4085                 }
4086
4087                 err = rdev_add_key(rdev, dev, key.idx,
4088                                    NL80211_KEYTYPE_PAIRWISE,
4089                                    mac_addr, &key.p);
4090         } else {
4091                 err = -EINVAL;
4092         }
4093  out:
4094         wdev_unlock(dev->ieee80211_ptr);
4095
4096         return err;
4097 }
4098
4099 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4100 {
4101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4102         int err;
4103         struct net_device *dev = info->user_ptr[1];
4104         struct key_parse key;
4105         const u8 *mac_addr = NULL;
4106
4107         err = nl80211_parse_key(info, &key);
4108         if (err)
4109                 return err;
4110
4111         if (!key.p.key) {
4112                 GENL_SET_ERR_MSG(info, "no key");
4113                 return -EINVAL;
4114         }
4115
4116         if (info->attrs[NL80211_ATTR_MAC])
4117                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4118
4119         if (key.type == -1) {
4120                 if (mac_addr)
4121                         key.type = NL80211_KEYTYPE_PAIRWISE;
4122                 else
4123                         key.type = NL80211_KEYTYPE_GROUP;
4124         }
4125
4126         /* for now */
4127         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4128             key.type != NL80211_KEYTYPE_GROUP) {
4129                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4130                 return -EINVAL;
4131         }
4132
4133         if (key.type == NL80211_KEYTYPE_GROUP &&
4134             info->attrs[NL80211_ATTR_VLAN_ID])
4135                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4136
4137         if (!rdev->ops->add_key)
4138                 return -EOPNOTSUPP;
4139
4140         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4141                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4142                                            mac_addr)) {
4143                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4144                 return -EINVAL;
4145         }
4146
4147         wdev_lock(dev->ieee80211_ptr);
4148         err = nl80211_key_allowed(dev->ieee80211_ptr);
4149         if (err)
4150                 GENL_SET_ERR_MSG(info, "key not allowed");
4151         if (!err) {
4152                 err = rdev_add_key(rdev, dev, key.idx,
4153                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4154                                     mac_addr, &key.p);
4155                 if (err)
4156                         GENL_SET_ERR_MSG(info, "key addition failed");
4157         }
4158         wdev_unlock(dev->ieee80211_ptr);
4159
4160         return err;
4161 }
4162
4163 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4164 {
4165         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4166         int err;
4167         struct net_device *dev = info->user_ptr[1];
4168         u8 *mac_addr = NULL;
4169         struct key_parse key;
4170
4171         err = nl80211_parse_key(info, &key);
4172         if (err)
4173                 return err;
4174
4175         if (info->attrs[NL80211_ATTR_MAC])
4176                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4177
4178         if (key.type == -1) {
4179                 if (mac_addr)
4180                         key.type = NL80211_KEYTYPE_PAIRWISE;
4181                 else
4182                         key.type = NL80211_KEYTYPE_GROUP;
4183         }
4184
4185         /* for now */
4186         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4187             key.type != NL80211_KEYTYPE_GROUP)
4188                 return -EINVAL;
4189
4190         if (!rdev->ops->del_key)
4191                 return -EOPNOTSUPP;
4192
4193         wdev_lock(dev->ieee80211_ptr);
4194         err = nl80211_key_allowed(dev->ieee80211_ptr);
4195
4196         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4197             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4198                 err = -ENOENT;
4199
4200         if (!err)
4201                 err = rdev_del_key(rdev, dev, key.idx,
4202                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4203                                    mac_addr);
4204
4205 #ifdef CONFIG_CFG80211_WEXT
4206         if (!err) {
4207                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4208                         dev->ieee80211_ptr->wext.default_key = -1;
4209                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4210                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4211         }
4212 #endif
4213         wdev_unlock(dev->ieee80211_ptr);
4214
4215         return err;
4216 }
4217
4218 /* This function returns an error or the number of nested attributes */
4219 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4220 {
4221         struct nlattr *attr;
4222         int n_entries = 0, tmp;
4223
4224         nla_for_each_nested(attr, nl_attr, tmp) {
4225                 if (nla_len(attr) != ETH_ALEN)
4226                         return -EINVAL;
4227
4228                 n_entries++;
4229         }
4230
4231         return n_entries;
4232 }
4233
4234 /*
4235  * This function parses ACL information and allocates memory for ACL data.
4236  * On successful return, the calling function is responsible to free the
4237  * ACL buffer returned by this function.
4238  */
4239 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4240                                                 struct genl_info *info)
4241 {
4242         enum nl80211_acl_policy acl_policy;
4243         struct nlattr *attr;
4244         struct cfg80211_acl_data *acl;
4245         int i = 0, n_entries, tmp;
4246
4247         if (!wiphy->max_acl_mac_addrs)
4248                 return ERR_PTR(-EOPNOTSUPP);
4249
4250         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4251                 return ERR_PTR(-EINVAL);
4252
4253         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4254         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4255             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4256                 return ERR_PTR(-EINVAL);
4257
4258         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4259                 return ERR_PTR(-EINVAL);
4260
4261         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4262         if (n_entries < 0)
4263                 return ERR_PTR(n_entries);
4264
4265         if (n_entries > wiphy->max_acl_mac_addrs)
4266                 return ERR_PTR(-ENOTSUPP);
4267
4268         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4269         if (!acl)
4270                 return ERR_PTR(-ENOMEM);
4271
4272         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4273                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4274                 i++;
4275         }
4276
4277         acl->n_acl_entries = n_entries;
4278         acl->acl_policy = acl_policy;
4279
4280         return acl;
4281 }
4282
4283 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4284 {
4285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4286         struct net_device *dev = info->user_ptr[1];
4287         struct cfg80211_acl_data *acl;
4288         int err;
4289
4290         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4291             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4292                 return -EOPNOTSUPP;
4293
4294         if (!dev->ieee80211_ptr->beacon_interval)
4295                 return -EINVAL;
4296
4297         acl = parse_acl_data(&rdev->wiphy, info);
4298         if (IS_ERR(acl))
4299                 return PTR_ERR(acl);
4300
4301         err = rdev_set_mac_acl(rdev, dev, acl);
4302
4303         kfree(acl);
4304
4305         return err;
4306 }
4307
4308 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4309                            u8 *rates, u8 rates_len)
4310 {
4311         u8 i;
4312         u32 mask = 0;
4313
4314         for (i = 0; i < rates_len; i++) {
4315                 int rate = (rates[i] & 0x7f) * 5;
4316                 int ridx;
4317
4318                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4319                         struct ieee80211_rate *srate =
4320                                 &sband->bitrates[ridx];
4321                         if (rate == srate->bitrate) {
4322                                 mask |= 1 << ridx;
4323                                 break;
4324                         }
4325                 }
4326                 if (ridx == sband->n_bitrates)
4327                         return 0; /* rate not found */
4328         }
4329
4330         return mask;
4331 }
4332
4333 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4334                                u8 *rates, u8 rates_len,
4335                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4336 {
4337         u8 i;
4338
4339         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4340
4341         for (i = 0; i < rates_len; i++) {
4342                 int ridx, rbit;
4343
4344                 ridx = rates[i] / 8;
4345                 rbit = BIT(rates[i] % 8);
4346
4347                 /* check validity */
4348                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4349                         return false;
4350
4351                 /* check availability */
4352                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4353                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4354                         mcs[ridx] |= rbit;
4355                 else
4356                         return false;
4357         }
4358
4359         return true;
4360 }
4361
4362 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4363 {
4364         u16 mcs_mask = 0;
4365
4366         switch (vht_mcs_map) {
4367         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4368                 break;
4369         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4370                 mcs_mask = 0x00FF;
4371                 break;
4372         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4373                 mcs_mask = 0x01FF;
4374                 break;
4375         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4376                 mcs_mask = 0x03FF;
4377                 break;
4378         default:
4379                 break;
4380         }
4381
4382         return mcs_mask;
4383 }
4384
4385 static void vht_build_mcs_mask(u16 vht_mcs_map,
4386                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4387 {
4388         u8 nss;
4389
4390         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4391                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4392                 vht_mcs_map >>= 2;
4393         }
4394 }
4395
4396 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4397                              struct nl80211_txrate_vht *txrate,
4398                              u16 mcs[NL80211_VHT_NSS_MAX])
4399 {
4400         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4401         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4402         u8 i;
4403
4404         if (!sband->vht_cap.vht_supported)
4405                 return false;
4406
4407         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4408
4409         /* Build vht_mcs_mask from VHT capabilities */
4410         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4411
4412         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4413                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4414                         mcs[i] = txrate->mcs[i];
4415                 else
4416                         return false;
4417         }
4418
4419         return true;
4420 }
4421
4422 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4423                                          struct nlattr *attrs[],
4424                                          enum nl80211_attrs attr,
4425                                          struct cfg80211_bitrate_mask *mask)
4426 {
4427         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4429         int rem, i;
4430         struct nlattr *tx_rates;
4431         struct ieee80211_supported_band *sband;
4432         u16 vht_tx_mcs_map;
4433
4434         memset(mask, 0, sizeof(*mask));
4435         /* Default to all rates enabled */
4436         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4437                 sband = rdev->wiphy.bands[i];
4438
4439                 if (!sband)
4440                         continue;
4441
4442                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4443                 memcpy(mask->control[i].ht_mcs,
4444                        sband->ht_cap.mcs.rx_mask,
4445                        sizeof(mask->control[i].ht_mcs));
4446
4447                 if (!sband->vht_cap.vht_supported)
4448                         continue;
4449
4450                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4451                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4452         }
4453
4454         /* if no rates are given set it back to the defaults */
4455         if (!attrs[attr])
4456                 goto out;
4457
4458         /* The nested attribute uses enum nl80211_band as the index. This maps
4459          * directly to the enum nl80211_band values used in cfg80211.
4460          */
4461         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4462         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4463                 enum nl80211_band band = nla_type(tx_rates);
4464                 int err;
4465
4466                 if (band < 0 || band >= NUM_NL80211_BANDS)
4467                         return -EINVAL;
4468                 sband = rdev->wiphy.bands[band];
4469                 if (sband == NULL)
4470                         return -EINVAL;
4471                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4472                                                   tx_rates,
4473                                                   nl80211_txattr_policy,
4474                                                   info->extack);
4475                 if (err)
4476                         return err;
4477                 if (tb[NL80211_TXRATE_LEGACY]) {
4478                         mask->control[band].legacy = rateset_to_mask(
4479                                 sband,
4480                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4481                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4482                         if ((mask->control[band].legacy == 0) &&
4483                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4484                                 return -EINVAL;
4485                 }
4486                 if (tb[NL80211_TXRATE_HT]) {
4487                         if (!ht_rateset_to_mask(
4488                                         sband,
4489                                         nla_data(tb[NL80211_TXRATE_HT]),
4490                                         nla_len(tb[NL80211_TXRATE_HT]),
4491                                         mask->control[band].ht_mcs))
4492                                 return -EINVAL;
4493                 }
4494                 if (tb[NL80211_TXRATE_VHT]) {
4495                         if (!vht_set_mcs_mask(
4496                                         sband,
4497                                         nla_data(tb[NL80211_TXRATE_VHT]),
4498                                         mask->control[band].vht_mcs))
4499                                 return -EINVAL;
4500                 }
4501                 if (tb[NL80211_TXRATE_GI]) {
4502                         mask->control[band].gi =
4503                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4504                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4505                                 return -EINVAL;
4506                 }
4507
4508                 if (mask->control[band].legacy == 0) {
4509                         /* don't allow empty legacy rates if HT or VHT
4510                          * are not even supported.
4511                          */
4512                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4513                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4514                                 return -EINVAL;
4515
4516                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4517                                 if (mask->control[band].ht_mcs[i])
4518                                         goto out;
4519
4520                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4521                                 if (mask->control[band].vht_mcs[i])
4522                                         goto out;
4523
4524                         /* legacy and mcs rates may not be both empty */
4525                         return -EINVAL;
4526                 }
4527         }
4528
4529 out:
4530         return 0;
4531 }
4532
4533 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4534                                    enum nl80211_band band,
4535                                    struct cfg80211_bitrate_mask *beacon_rate)
4536 {
4537         u32 count_ht, count_vht, i;
4538         u32 rate = beacon_rate->control[band].legacy;
4539
4540         /* Allow only one rate */
4541         if (hweight32(rate) > 1)
4542                 return -EINVAL;
4543
4544         count_ht = 0;
4545         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4546                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4547                         return -EINVAL;
4548                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4549                         count_ht++;
4550                         if (count_ht > 1)
4551                                 return -EINVAL;
4552                 }
4553                 if (count_ht && rate)
4554                         return -EINVAL;
4555         }
4556
4557         count_vht = 0;
4558         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4559                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4560                         return -EINVAL;
4561                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4562                         count_vht++;
4563                         if (count_vht > 1)
4564                                 return -EINVAL;
4565                 }
4566                 if (count_vht && rate)
4567                         return -EINVAL;
4568         }
4569
4570         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4571                 return -EINVAL;
4572
4573         if (rate &&
4574             !wiphy_ext_feature_isset(&rdev->wiphy,
4575                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4576                 return -EINVAL;
4577         if (count_ht &&
4578             !wiphy_ext_feature_isset(&rdev->wiphy,
4579                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4580                 return -EINVAL;
4581         if (count_vht &&
4582             !wiphy_ext_feature_isset(&rdev->wiphy,
4583                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4584                 return -EINVAL;
4585
4586         return 0;
4587 }
4588
4589 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4590                                 struct nlattr *attrs[],
4591                                 struct cfg80211_beacon_data *bcn)
4592 {
4593         bool haveinfo = false;
4594         int err;
4595
4596         memset(bcn, 0, sizeof(*bcn));
4597
4598         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4599                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4600                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4601                 if (!bcn->head_len)
4602                         return -EINVAL;
4603                 haveinfo = true;
4604         }
4605
4606         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4607                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4608                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4609                 haveinfo = true;
4610         }
4611
4612         if (!haveinfo)
4613                 return -EINVAL;
4614
4615         if (attrs[NL80211_ATTR_IE]) {
4616                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4617                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4618         }
4619
4620         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4621                 bcn->proberesp_ies =
4622                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4623                 bcn->proberesp_ies_len =
4624                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4625         }
4626
4627         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4628                 bcn->assocresp_ies =
4629                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4630                 bcn->assocresp_ies_len =
4631                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4632         }
4633
4634         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4635                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4636                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4637         }
4638
4639         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4640                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4641
4642                 err = nla_parse_nested_deprecated(tb,
4643                                                   NL80211_FTM_RESP_ATTR_MAX,
4644                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4645                                                   NULL, NULL);
4646                 if (err)
4647                         return err;
4648
4649                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4650                     wiphy_ext_feature_isset(&rdev->wiphy,
4651                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4652                         bcn->ftm_responder = 1;
4653                 else
4654                         return -EOPNOTSUPP;
4655
4656                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4657                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4658                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4659                 }
4660
4661                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4662                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4663                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4664                 }
4665         } else {
4666                 bcn->ftm_responder = -1;
4667         }
4668
4669         return 0;
4670 }
4671
4672 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4673                                     struct ieee80211_he_obss_pd *he_obss_pd)
4674 {
4675         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4676         int err;
4677
4678         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4679                                he_obss_pd_policy, NULL);
4680         if (err)
4681                 return err;
4682
4683         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4684             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4685                 return -EINVAL;
4686
4687         he_obss_pd->min_offset =
4688                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4689         he_obss_pd->max_offset =
4690                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4691
4692         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4693                 return -EINVAL;
4694
4695         he_obss_pd->enable = true;
4696
4697         return 0;
4698 }
4699
4700 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4701                                       struct cfg80211_he_bss_color *he_bss_color)
4702 {
4703         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4704         int err;
4705
4706         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4707                                he_bss_color_policy, NULL);
4708         if (err)
4709                 return err;
4710
4711         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4712                 return -EINVAL;
4713
4714         he_bss_color->color =
4715                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4716         he_bss_color->disabled =
4717                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4718         he_bss_color->partial =
4719                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4720
4721         return 0;
4722 }
4723
4724 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4725                                             const u8 *rates)
4726 {
4727         int i;
4728
4729         if (!rates)
4730                 return;
4731
4732         for (i = 0; i < rates[1]; i++) {
4733                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4734                         params->ht_required = true;
4735                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4736                         params->vht_required = true;
4737                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
4738                         params->he_required = true;
4739         }
4740 }
4741
4742 /*
4743  * Since the nl80211 API didn't include, from the beginning, attributes about
4744  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4745  * benefit of drivers that rebuild IEs in the firmware.
4746  */
4747 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4748 {
4749         const struct cfg80211_beacon_data *bcn = &params->beacon;
4750         size_t ies_len = bcn->tail_len;
4751         const u8 *ies = bcn->tail;
4752         const u8 *rates;
4753         const u8 *cap;
4754
4755         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4756         nl80211_check_ap_rate_selectors(params, rates);
4757
4758         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4759         nl80211_check_ap_rate_selectors(params, rates);
4760
4761         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4762         if (cap && cap[1] >= sizeof(*params->ht_cap))
4763                 params->ht_cap = (void *)(cap + 2);
4764         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4765         if (cap && cap[1] >= sizeof(*params->vht_cap))
4766                 params->vht_cap = (void *)(cap + 2);
4767         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4768         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4769                 params->he_cap = (void *)(cap + 3);
4770         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4771         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4772                 params->he_oper = (void *)(cap + 3);
4773 }
4774
4775 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4776                                    struct cfg80211_ap_settings *params)
4777 {
4778         struct wireless_dev *wdev;
4779         bool ret = false;
4780
4781         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4782                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4783                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4784                         continue;
4785
4786                 if (!wdev->preset_chandef.chan)
4787                         continue;
4788
4789                 params->chandef = wdev->preset_chandef;
4790                 ret = true;
4791                 break;
4792         }
4793
4794         return ret;
4795 }
4796
4797 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4798                                     enum nl80211_auth_type auth_type,
4799                                     enum nl80211_commands cmd)
4800 {
4801         if (auth_type > NL80211_AUTHTYPE_MAX)
4802                 return false;
4803
4804         switch (cmd) {
4805         case NL80211_CMD_AUTHENTICATE:
4806                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4807                     auth_type == NL80211_AUTHTYPE_SAE)
4808                         return false;
4809                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4810                                              NL80211_EXT_FEATURE_FILS_STA) &&
4811                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4812                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4813                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4814                         return false;
4815                 return true;
4816         case NL80211_CMD_CONNECT:
4817                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4818                     !wiphy_ext_feature_isset(&rdev->wiphy,
4819                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4820                     auth_type == NL80211_AUTHTYPE_SAE)
4821                         return false;
4822
4823                 /* FILS with SK PFS or PK not supported yet */
4824                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4825                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4826                         return false;
4827                 if (!wiphy_ext_feature_isset(
4828                             &rdev->wiphy,
4829                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4830                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4831                         return false;
4832                 return true;
4833         case NL80211_CMD_START_AP:
4834                 /* SAE not supported yet */
4835                 if (auth_type == NL80211_AUTHTYPE_SAE)
4836                         return false;
4837                 /* FILS not supported yet */
4838                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4839                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4840                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4841                         return false;
4842                 return true;
4843         default:
4844                 return false;
4845         }
4846 }
4847
4848 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4849 {
4850         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4851         struct net_device *dev = info->user_ptr[1];
4852         struct wireless_dev *wdev = dev->ieee80211_ptr;
4853         struct cfg80211_ap_settings params;
4854         int err;
4855
4856         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4857             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4858                 return -EOPNOTSUPP;
4859
4860         if (!rdev->ops->start_ap)
4861                 return -EOPNOTSUPP;
4862
4863         if (wdev->beacon_interval)
4864                 return -EALREADY;
4865
4866         memset(&params, 0, sizeof(params));
4867
4868         /* these are required for START_AP */
4869         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4870             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4871             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4872                 return -EINVAL;
4873
4874         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4875         if (err)
4876                 return err;
4877
4878         params.beacon_interval =
4879                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4880         params.dtim_period =
4881                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4882
4883         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4884                                            params.beacon_interval);
4885         if (err)
4886                 return err;
4887
4888         /*
4889          * In theory, some of these attributes should be required here
4890          * but since they were not used when the command was originally
4891          * added, keep them optional for old user space programs to let
4892          * them continue to work with drivers that do not need the
4893          * additional information -- drivers must check!
4894          */
4895         if (info->attrs[NL80211_ATTR_SSID]) {
4896                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4897                 params.ssid_len =
4898                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4899                 if (params.ssid_len == 0 ||
4900                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4901                         return -EINVAL;
4902         }
4903
4904         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4905                 params.hidden_ssid = nla_get_u32(
4906                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4907
4908         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4909
4910         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4911                 params.auth_type = nla_get_u32(
4912                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4913                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4914                                              NL80211_CMD_START_AP))
4915                         return -EINVAL;
4916         } else
4917                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4918
4919         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4920                                       NL80211_MAX_NR_CIPHER_SUITES);
4921         if (err)
4922                 return err;
4923
4924         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4925                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4926                         return -EOPNOTSUPP;
4927                 params.inactivity_timeout = nla_get_u16(
4928                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4929         }
4930
4931         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4932                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4933                         return -EINVAL;
4934                 params.p2p_ctwindow =
4935                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4936                 if (params.p2p_ctwindow != 0 &&
4937                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4938                         return -EINVAL;
4939         }
4940
4941         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4942                 u8 tmp;
4943
4944                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4945                         return -EINVAL;
4946                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4947                 params.p2p_opp_ps = tmp;
4948                 if (params.p2p_opp_ps != 0 &&
4949                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4950                         return -EINVAL;
4951         }
4952
4953         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4954                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4955                 if (err)
4956                         return err;
4957         } else if (wdev->preset_chandef.chan) {
4958                 params.chandef = wdev->preset_chandef;
4959         } else if (!nl80211_get_ap_channel(rdev, &params))
4960                 return -EINVAL;
4961
4962         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4963                                            wdev->iftype))
4964                 return -EINVAL;
4965
4966         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4967                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
4968                                                     NL80211_ATTR_TX_RATES,
4969                                                     &params.beacon_rate);
4970                 if (err)
4971                         return err;
4972
4973                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4974                                               &params.beacon_rate);
4975                 if (err)
4976                         return err;
4977         }
4978
4979         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4980                 params.smps_mode =
4981                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4982                 switch (params.smps_mode) {
4983                 case NL80211_SMPS_OFF:
4984                         break;
4985                 case NL80211_SMPS_STATIC:
4986                         if (!(rdev->wiphy.features &
4987                               NL80211_FEATURE_STATIC_SMPS))
4988                                 return -EINVAL;
4989                         break;
4990                 case NL80211_SMPS_DYNAMIC:
4991                         if (!(rdev->wiphy.features &
4992                               NL80211_FEATURE_DYNAMIC_SMPS))
4993                                 return -EINVAL;
4994                         break;
4995                 default:
4996                         return -EINVAL;
4997                 }
4998         } else {
4999                 params.smps_mode = NL80211_SMPS_OFF;
5000         }
5001
5002         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5003         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5004                 return -EOPNOTSUPP;
5005
5006         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5007                 params.acl = parse_acl_data(&rdev->wiphy, info);
5008                 if (IS_ERR(params.acl))
5009                         return PTR_ERR(params.acl);
5010         }
5011
5012         params.twt_responder =
5013                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5014
5015         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5016                 err = nl80211_parse_he_obss_pd(
5017                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5018                                         &params.he_obss_pd);
5019                 goto out;
5020         }
5021
5022         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5023                 err = nl80211_parse_he_bss_color(
5024                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5025                                         &params.he_bss_color);
5026                 if (err)
5027                         return err;
5028         }
5029
5030         nl80211_calculate_ap_params(&params);
5031
5032         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5033                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5034
5035         wdev_lock(wdev);
5036         err = rdev_start_ap(rdev, dev, &params);
5037         if (!err) {
5038                 wdev->preset_chandef = params.chandef;
5039                 wdev->beacon_interval = params.beacon_interval;
5040                 wdev->chandef = params.chandef;
5041                 wdev->ssid_len = params.ssid_len;
5042                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5043
5044                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5045                         wdev->conn_owner_nlportid = info->snd_portid;
5046         }
5047         wdev_unlock(wdev);
5048
5049 out:
5050         kfree(params.acl);
5051
5052         return err;
5053 }
5054
5055 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5056 {
5057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5058         struct net_device *dev = info->user_ptr[1];
5059         struct wireless_dev *wdev = dev->ieee80211_ptr;
5060         struct cfg80211_beacon_data params;
5061         int err;
5062
5063         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5064             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5065                 return -EOPNOTSUPP;
5066
5067         if (!rdev->ops->change_beacon)
5068                 return -EOPNOTSUPP;
5069
5070         if (!wdev->beacon_interval)
5071                 return -EINVAL;
5072
5073         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5074         if (err)
5075                 return err;
5076
5077         wdev_lock(wdev);
5078         err = rdev_change_beacon(rdev, dev, &params);
5079         wdev_unlock(wdev);
5080
5081         return err;
5082 }
5083
5084 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5085 {
5086         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5087         struct net_device *dev = info->user_ptr[1];
5088
5089         return cfg80211_stop_ap(rdev, dev, false);
5090 }
5091
5092 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5093         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5094         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5095         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5096         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5097         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5098         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5099 };
5100
5101 static int parse_station_flags(struct genl_info *info,
5102                                enum nl80211_iftype iftype,
5103                                struct station_parameters *params)
5104 {
5105         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5106         struct nlattr *nla;
5107         int flag;
5108
5109         /*
5110          * Try parsing the new attribute first so userspace
5111          * can specify both for older kernels.
5112          */
5113         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5114         if (nla) {
5115                 struct nl80211_sta_flag_update *sta_flags;
5116
5117                 sta_flags = nla_data(nla);
5118                 params->sta_flags_mask = sta_flags->mask;
5119                 params->sta_flags_set = sta_flags->set;
5120                 params->sta_flags_set &= params->sta_flags_mask;
5121                 if ((params->sta_flags_mask |
5122                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5123                         return -EINVAL;
5124                 return 0;
5125         }
5126
5127         /* if present, parse the old attribute */
5128
5129         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5130         if (!nla)
5131                 return 0;
5132
5133         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5134                 return -EINVAL;
5135
5136         /*
5137          * Only allow certain flags for interface types so that
5138          * other attributes are silently ignored. Remember that
5139          * this is backward compatibility code with old userspace
5140          * and shouldn't be hit in other cases anyway.
5141          */
5142         switch (iftype) {
5143         case NL80211_IFTYPE_AP:
5144         case NL80211_IFTYPE_AP_VLAN:
5145         case NL80211_IFTYPE_P2P_GO:
5146                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5147                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5148                                          BIT(NL80211_STA_FLAG_WME) |
5149                                          BIT(NL80211_STA_FLAG_MFP);
5150                 break;
5151         case NL80211_IFTYPE_P2P_CLIENT:
5152         case NL80211_IFTYPE_STATION:
5153                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5154                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5155                 break;
5156         case NL80211_IFTYPE_MESH_POINT:
5157                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5158                                          BIT(NL80211_STA_FLAG_MFP) |
5159                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5160                 break;
5161         default:
5162                 return -EINVAL;
5163         }
5164
5165         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5166                 if (flags[flag]) {
5167                         params->sta_flags_set |= (1<<flag);
5168
5169                         /* no longer support new API additions in old API */
5170                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5171                                 return -EINVAL;
5172                 }
5173         }
5174
5175         return 0;
5176 }
5177
5178 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5179 {
5180         struct nlattr *rate;
5181         u32 bitrate;
5182         u16 bitrate_compat;
5183         enum nl80211_rate_info rate_flg;
5184
5185         rate = nla_nest_start_noflag(msg, attr);
5186         if (!rate)
5187                 return false;
5188
5189         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5190         bitrate = cfg80211_calculate_bitrate(info);
5191         /* report 16-bit bitrate only if we can */
5192         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5193         if (bitrate > 0 &&
5194             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5195                 return false;
5196         if (bitrate_compat > 0 &&
5197             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5198                 return false;
5199
5200         switch (info->bw) {
5201         case RATE_INFO_BW_5:
5202                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5203                 break;
5204         case RATE_INFO_BW_10:
5205                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5206                 break;
5207         default:
5208                 WARN_ON(1);
5209                 /* fall through */
5210         case RATE_INFO_BW_20:
5211                 rate_flg = 0;
5212                 break;
5213         case RATE_INFO_BW_40:
5214                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5215                 break;
5216         case RATE_INFO_BW_80:
5217                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5218                 break;
5219         case RATE_INFO_BW_160:
5220                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5221                 break;
5222         case RATE_INFO_BW_HE_RU:
5223                 rate_flg = 0;
5224                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5225         }
5226
5227         if (rate_flg && nla_put_flag(msg, rate_flg))
5228                 return false;
5229
5230         if (info->flags & RATE_INFO_FLAGS_MCS) {
5231                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5232                         return false;
5233                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5234                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5235                         return false;
5236         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5237                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5238                         return false;
5239                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5240                         return false;
5241                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5242                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5243                         return false;
5244         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5245                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5246                         return false;
5247                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5248                         return false;
5249                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5250                         return false;
5251                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5252                         return false;
5253                 if (info->bw == RATE_INFO_BW_HE_RU &&
5254                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5255                                info->he_ru_alloc))
5256                         return false;
5257         }
5258
5259         nla_nest_end(msg, rate);
5260         return true;
5261 }
5262
5263 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5264                                int id)
5265 {
5266         void *attr;
5267         int i = 0;
5268
5269         if (!mask)
5270                 return true;
5271
5272         attr = nla_nest_start_noflag(msg, id);
5273         if (!attr)
5274                 return false;
5275
5276         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5277                 if (!(mask & BIT(i)))
5278                         continue;
5279
5280                 if (nla_put_u8(msg, i, signal[i]))
5281                         return false;
5282         }
5283
5284         nla_nest_end(msg, attr);
5285
5286         return true;
5287 }
5288
5289 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5290                                 u32 seq, int flags,
5291                                 struct cfg80211_registered_device *rdev,
5292                                 struct net_device *dev,
5293                                 const u8 *mac_addr, struct station_info *sinfo)
5294 {
5295         void *hdr;
5296         struct nlattr *sinfoattr, *bss_param;
5297
5298         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5299         if (!hdr) {
5300                 cfg80211_sinfo_release_content(sinfo);
5301                 return -1;
5302         }
5303
5304         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5305             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5306             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5307                 goto nla_put_failure;
5308
5309         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5310         if (!sinfoattr)
5311                 goto nla_put_failure;
5312
5313 #define PUT_SINFO(attr, memb, type) do {                                \
5314         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5315         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5316             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5317                              sinfo->memb))                              \
5318                 goto nla_put_failure;                                   \
5319         } while (0)
5320 #define PUT_SINFO_U64(attr, memb) do {                                  \
5321         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5322             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5323                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5324                 goto nla_put_failure;                                   \
5325         } while (0)
5326
5327         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5328         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5329         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5330
5331         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5332                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5333             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5334                         (u32)sinfo->rx_bytes))
5335                 goto nla_put_failure;
5336
5337         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5338                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5339             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5340                         (u32)sinfo->tx_bytes))
5341                 goto nla_put_failure;
5342
5343         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5344         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5345         PUT_SINFO(LLID, llid, u16);
5346         PUT_SINFO(PLID, plid, u16);
5347         PUT_SINFO(PLINK_STATE, plink_state, u8);
5348         PUT_SINFO_U64(RX_DURATION, rx_duration);
5349         PUT_SINFO_U64(TX_DURATION, tx_duration);
5350
5351         if (wiphy_ext_feature_isset(&rdev->wiphy,
5352                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5353                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5354
5355         switch (rdev->wiphy.signal_type) {
5356         case CFG80211_SIGNAL_TYPE_MBM:
5357                 PUT_SINFO(SIGNAL, signal, u8);
5358                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5359                 break;
5360         default:
5361                 break;
5362         }
5363         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5364                 if (!nl80211_put_signal(msg, sinfo->chains,
5365                                         sinfo->chain_signal,
5366                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5367                         goto nla_put_failure;
5368         }
5369         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5370                 if (!nl80211_put_signal(msg, sinfo->chains,
5371                                         sinfo->chain_signal_avg,
5372                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5373                         goto nla_put_failure;
5374         }
5375         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5376                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5377                                           NL80211_STA_INFO_TX_BITRATE))
5378                         goto nla_put_failure;
5379         }
5380         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5381                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5382                                           NL80211_STA_INFO_RX_BITRATE))
5383                         goto nla_put_failure;
5384         }
5385
5386         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5387         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5388         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5389         PUT_SINFO(TX_FAILED, tx_failed, u32);
5390         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5391         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5392         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5393         PUT_SINFO(LOCAL_PM, local_pm, u32);
5394         PUT_SINFO(PEER_PM, peer_pm, u32);
5395         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5396         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5397
5398         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5399                 bss_param = nla_nest_start_noflag(msg,
5400                                                   NL80211_STA_INFO_BSS_PARAM);
5401                 if (!bss_param)
5402                         goto nla_put_failure;
5403
5404                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5405                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5406                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5407                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5408                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5409                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5410                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5411                                sinfo->bss_param.dtim_period) ||
5412                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5413                                 sinfo->bss_param.beacon_interval))
5414                         goto nla_put_failure;
5415
5416                 nla_nest_end(msg, bss_param);
5417         }
5418         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5419             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5420                     sizeof(struct nl80211_sta_flag_update),
5421                     &sinfo->sta_flags))
5422                 goto nla_put_failure;
5423
5424         PUT_SINFO_U64(T_OFFSET, t_offset);
5425         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5426         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5427         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5428         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5429         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5430         if (wiphy_ext_feature_isset(&rdev->wiphy,
5431                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5432                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5433                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5434         }
5435
5436 #undef PUT_SINFO
5437 #undef PUT_SINFO_U64
5438
5439         if (sinfo->pertid) {
5440                 struct nlattr *tidsattr;
5441                 int tid;
5442
5443                 tidsattr = nla_nest_start_noflag(msg,
5444                                                  NL80211_STA_INFO_TID_STATS);
5445                 if (!tidsattr)
5446                         goto nla_put_failure;
5447
5448                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5449                         struct cfg80211_tid_stats *tidstats;
5450                         struct nlattr *tidattr;
5451
5452                         tidstats = &sinfo->pertid[tid];
5453
5454                         if (!tidstats->filled)
5455                                 continue;
5456
5457                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5458                         if (!tidattr)
5459                                 goto nla_put_failure;
5460
5461 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5462         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5463             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5464                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5465                 goto nla_put_failure;                                   \
5466         } while (0)
5467
5468                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5469                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5470                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5471                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5472
5473 #undef PUT_TIDVAL_U64
5474                         if ((tidstats->filled &
5475                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5476                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5477                                                    NL80211_TID_STATS_TXQ_STATS))
5478                                 goto nla_put_failure;
5479
5480                         nla_nest_end(msg, tidattr);
5481                 }
5482
5483                 nla_nest_end(msg, tidsattr);
5484         }
5485
5486         nla_nest_end(msg, sinfoattr);
5487
5488         if (sinfo->assoc_req_ies_len &&
5489             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5490                     sinfo->assoc_req_ies))
5491                 goto nla_put_failure;
5492
5493         cfg80211_sinfo_release_content(sinfo);
5494         genlmsg_end(msg, hdr);
5495         return 0;
5496
5497  nla_put_failure:
5498         cfg80211_sinfo_release_content(sinfo);
5499         genlmsg_cancel(msg, hdr);
5500         return -EMSGSIZE;
5501 }
5502
5503 static int nl80211_dump_station(struct sk_buff *skb,
5504                                 struct netlink_callback *cb)
5505 {
5506         struct station_info sinfo;
5507         struct cfg80211_registered_device *rdev;
5508         struct wireless_dev *wdev;
5509         u8 mac_addr[ETH_ALEN];
5510         int sta_idx = cb->args[2];
5511         int err;
5512
5513         rtnl_lock();
5514         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5515         if (err)
5516                 goto out_err;
5517
5518         if (!wdev->netdev) {
5519                 err = -EINVAL;
5520                 goto out_err;
5521         }
5522
5523         if (!rdev->ops->dump_station) {
5524                 err = -EOPNOTSUPP;
5525                 goto out_err;
5526         }
5527
5528         while (1) {
5529                 memset(&sinfo, 0, sizeof(sinfo));
5530                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5531                                         mac_addr, &sinfo);
5532                 if (err == -ENOENT)
5533                         break;
5534                 if (err)
5535                         goto out_err;
5536
5537                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5538                                 NETLINK_CB(cb->skb).portid,
5539                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5540                                 rdev, wdev->netdev, mac_addr,
5541                                 &sinfo) < 0)
5542                         goto out;
5543
5544                 sta_idx++;
5545         }
5546
5547  out:
5548         cb->args[2] = sta_idx;
5549         err = skb->len;
5550  out_err:
5551         rtnl_unlock();
5552
5553         return err;
5554 }
5555
5556 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5557 {
5558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5559         struct net_device *dev = info->user_ptr[1];
5560         struct station_info sinfo;
5561         struct sk_buff *msg;
5562         u8 *mac_addr = NULL;
5563         int err;
5564
5565         memset(&sinfo, 0, sizeof(sinfo));
5566
5567         if (!info->attrs[NL80211_ATTR_MAC])
5568                 return -EINVAL;
5569
5570         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5571
5572         if (!rdev->ops->get_station)
5573                 return -EOPNOTSUPP;
5574
5575         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5576         if (err)
5577                 return err;
5578
5579         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5580         if (!msg) {
5581                 cfg80211_sinfo_release_content(&sinfo);
5582                 return -ENOMEM;
5583         }
5584
5585         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5586                                  info->snd_portid, info->snd_seq, 0,
5587                                  rdev, dev, mac_addr, &sinfo) < 0) {
5588                 nlmsg_free(msg);
5589                 return -ENOBUFS;
5590         }
5591
5592         return genlmsg_reply(msg, info);
5593 }
5594
5595 int cfg80211_check_station_change(struct wiphy *wiphy,
5596                                   struct station_parameters *params,
5597                                   enum cfg80211_station_type statype)
5598 {
5599         if (params->listen_interval != -1 &&
5600             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5601                 return -EINVAL;
5602
5603         if (params->support_p2p_ps != -1 &&
5604             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5605                 return -EINVAL;
5606
5607         if (params->aid &&
5608             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5609             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5610                 return -EINVAL;
5611
5612         /* When you run into this, adjust the code below for the new flag */
5613         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5614
5615         switch (statype) {
5616         case CFG80211_STA_MESH_PEER_KERNEL:
5617         case CFG80211_STA_MESH_PEER_USER:
5618                 /*
5619                  * No ignoring the TDLS flag here -- the userspace mesh
5620                  * code doesn't have the bug of including TDLS in the
5621                  * mask everywhere.
5622                  */
5623                 if (params->sta_flags_mask &
5624                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5625                                   BIT(NL80211_STA_FLAG_MFP) |
5626                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5627                         return -EINVAL;
5628                 break;
5629         case CFG80211_STA_TDLS_PEER_SETUP:
5630         case CFG80211_STA_TDLS_PEER_ACTIVE:
5631                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5632                         return -EINVAL;
5633                 /* ignore since it can't change */
5634                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5635                 break;
5636         default:
5637                 /* disallow mesh-specific things */
5638                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5639                         return -EINVAL;
5640                 if (params->local_pm)
5641                         return -EINVAL;
5642                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5643                         return -EINVAL;
5644         }
5645
5646         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5647             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5648                 /* TDLS can't be set, ... */
5649                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5650                         return -EINVAL;
5651                 /*
5652                  * ... but don't bother the driver with it. This works around
5653                  * a hostapd/wpa_supplicant issue -- it always includes the
5654                  * TLDS_PEER flag in the mask even for AP mode.
5655                  */
5656                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5657         }
5658
5659         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5660             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5661                 /* reject other things that can't change */
5662                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5663                         return -EINVAL;
5664                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5665                         return -EINVAL;
5666                 if (params->supported_rates)
5667                         return -EINVAL;
5668                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5669                     params->he_capa)
5670                         return -EINVAL;
5671         }
5672
5673         if (statype != CFG80211_STA_AP_CLIENT &&
5674             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5675                 if (params->vlan)
5676                         return -EINVAL;
5677         }
5678
5679         switch (statype) {
5680         case CFG80211_STA_AP_MLME_CLIENT:
5681                 /* Use this only for authorizing/unauthorizing a station */
5682                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5683                         return -EOPNOTSUPP;
5684                 break;
5685         case CFG80211_STA_AP_CLIENT:
5686         case CFG80211_STA_AP_CLIENT_UNASSOC:
5687                 /* accept only the listed bits */
5688                 if (params->sta_flags_mask &
5689                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5690                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5691                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5692                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5693                                   BIT(NL80211_STA_FLAG_WME) |
5694                                   BIT(NL80211_STA_FLAG_MFP)))
5695                         return -EINVAL;
5696
5697                 /* but authenticated/associated only if driver handles it */
5698                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5699                     params->sta_flags_mask &
5700                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5701                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5702                         return -EINVAL;
5703                 break;
5704         case CFG80211_STA_IBSS:
5705         case CFG80211_STA_AP_STA:
5706                 /* reject any changes other than AUTHORIZED */
5707                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5708                         return -EINVAL;
5709                 break;
5710         case CFG80211_STA_TDLS_PEER_SETUP:
5711                 /* reject any changes other than AUTHORIZED or WME */
5712                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5713                                                BIT(NL80211_STA_FLAG_WME)))
5714                         return -EINVAL;
5715                 /* force (at least) rates when authorizing */
5716                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5717                     !params->supported_rates)
5718                         return -EINVAL;
5719                 break;
5720         case CFG80211_STA_TDLS_PEER_ACTIVE:
5721                 /* reject any changes */
5722                 return -EINVAL;
5723         case CFG80211_STA_MESH_PEER_KERNEL:
5724                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5725                         return -EINVAL;
5726                 break;
5727         case CFG80211_STA_MESH_PEER_USER:
5728                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5729                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5730                         return -EINVAL;
5731                 break;
5732         }
5733
5734         /*
5735          * Older kernel versions ignored this attribute entirely, so don't
5736          * reject attempts to update it but mark it as unused instead so the
5737          * driver won't look at the data.
5738          */
5739         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5740             statype != CFG80211_STA_TDLS_PEER_SETUP)
5741                 params->opmode_notif_used = false;
5742
5743         return 0;
5744 }
5745 EXPORT_SYMBOL(cfg80211_check_station_change);
5746
5747 /*
5748  * Get vlan interface making sure it is running and on the right wiphy.
5749  */
5750 static struct net_device *get_vlan(struct genl_info *info,
5751                                    struct cfg80211_registered_device *rdev)
5752 {
5753         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5754         struct net_device *v;
5755         int ret;
5756
5757         if (!vlanattr)
5758                 return NULL;
5759
5760         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5761         if (!v)
5762                 return ERR_PTR(-ENODEV);
5763
5764         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5765                 ret = -EINVAL;
5766                 goto error;
5767         }
5768
5769         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5770             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5771             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5772                 ret = -EINVAL;
5773                 goto error;
5774         }
5775
5776         if (!netif_running(v)) {
5777                 ret = -ENETDOWN;
5778                 goto error;
5779         }
5780
5781         return v;
5782  error:
5783         dev_put(v);
5784         return ERR_PTR(ret);
5785 }
5786
5787 static const struct nla_policy
5788 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5789         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5790         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5791 };
5792
5793 static int nl80211_parse_sta_wme(struct genl_info *info,
5794                                  struct station_parameters *params)
5795 {
5796         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5797         struct nlattr *nla;
5798         int err;
5799
5800         /* parse WME attributes if present */
5801         if (!info->attrs[NL80211_ATTR_STA_WME])
5802                 return 0;
5803
5804         nla = info->attrs[NL80211_ATTR_STA_WME];
5805         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5806                                           nl80211_sta_wme_policy,
5807                                           info->extack);
5808         if (err)
5809                 return err;
5810
5811         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5812                 params->uapsd_queues = nla_get_u8(
5813                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5814         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5815                 return -EINVAL;
5816
5817         if (tb[NL80211_STA_WME_MAX_SP])
5818                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5819
5820         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5821                 return -EINVAL;
5822
5823         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5824
5825         return 0;
5826 }
5827
5828 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5829                                       struct station_parameters *params)
5830 {
5831         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5832                 params->supported_channels =
5833                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5834                 params->supported_channels_len =
5835                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5836                 /*
5837                  * Need to include at least one (first channel, number of
5838                  * channels) tuple for each subband, and must have proper
5839                  * tuples for the rest of the data as well.
5840                  */
5841                 if (params->supported_channels_len < 2)
5842                         return -EINVAL;
5843                 if (params->supported_channels_len % 2)
5844                         return -EINVAL;
5845         }
5846
5847         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5848                 params->supported_oper_classes =
5849                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5850                 params->supported_oper_classes_len =
5851                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5852                 /*
5853                  * The value of the Length field of the Supported Operating
5854                  * Classes element is between 2 and 253.
5855                  */
5856                 if (params->supported_oper_classes_len < 2 ||
5857                     params->supported_oper_classes_len > 253)
5858                         return -EINVAL;
5859         }
5860         return 0;
5861 }
5862
5863 static int nl80211_set_station_tdls(struct genl_info *info,
5864                                     struct station_parameters *params)
5865 {
5866         int err;
5867         /* Dummy STA entry gets updated once the peer capabilities are known */
5868         if (info->attrs[NL80211_ATTR_PEER_AID])
5869                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5870         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5871                 params->ht_capa =
5872                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5873         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5874                 params->vht_capa =
5875                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5876         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5877                 params->he_capa =
5878                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5879                 params->he_capa_len =
5880                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5881
5882                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5883                         return -EINVAL;
5884         }
5885
5886         err = nl80211_parse_sta_channel_info(info, params);
5887         if (err)
5888                 return err;
5889
5890         return nl80211_parse_sta_wme(info, params);
5891 }
5892
5893 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5894                                              struct station_parameters *params)
5895 {
5896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5897         int idx;
5898
5899         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5900                 if (!rdev->ops->set_tx_power ||
5901                     !wiphy_ext_feature_isset(&rdev->wiphy,
5902                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5903                         return -EOPNOTSUPP;
5904
5905                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5906                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5907
5908                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5909                         idx = NL80211_ATTR_STA_TX_POWER;
5910
5911                         if (info->attrs[idx])
5912                                 params->txpwr.power =
5913                                         nla_get_s16(info->attrs[idx]);
5914                         else
5915                                 return -EINVAL;
5916                 }
5917                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5918         }
5919
5920         return 0;
5921 }
5922
5923 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5924 {
5925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5926         struct net_device *dev = info->user_ptr[1];
5927         struct station_parameters params;
5928         u8 *mac_addr;
5929         int err;
5930
5931         memset(&params, 0, sizeof(params));
5932
5933         if (!rdev->ops->change_station)
5934                 return -EOPNOTSUPP;
5935
5936         /*
5937          * AID and listen_interval properties can be set only for unassociated
5938          * station. Include these parameters here and will check them in
5939          * cfg80211_check_station_change().
5940          */
5941         if (info->attrs[NL80211_ATTR_STA_AID])
5942                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5943
5944         if (info->attrs[NL80211_ATTR_VLAN_ID])
5945                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5946
5947         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5948                 params.listen_interval =
5949                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5950         else
5951                 params.listen_interval = -1;
5952
5953         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5954                 params.support_p2p_ps =
5955                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5956         else
5957                 params.support_p2p_ps = -1;
5958
5959         if (!info->attrs[NL80211_ATTR_MAC])
5960                 return -EINVAL;
5961
5962         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5963
5964         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5965                 params.supported_rates =
5966                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5967                 params.supported_rates_len =
5968                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5969         }
5970
5971         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5972                 params.capability =
5973                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5974                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5975         }
5976
5977         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5978                 params.ext_capab =
5979                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5980                 params.ext_capab_len =
5981                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5982         }
5983
5984         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5985                 return -EINVAL;
5986
5987         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5988                 params.plink_action =
5989                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5990
5991         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5992                 params.plink_state =
5993                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5994                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5995                         params.peer_aid = nla_get_u16(
5996                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5997                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5998         }
5999
6000         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6001                 params.local_pm = nla_get_u32(
6002                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6003
6004         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6005                 params.opmode_notif_used = true;
6006                 params.opmode_notif =
6007                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6008         }
6009
6010         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6011                 params.he_6ghz_capa =
6012                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6013
6014         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6015                 params.airtime_weight =
6016                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6017
6018         if (params.airtime_weight &&
6019             !wiphy_ext_feature_isset(&rdev->wiphy,
6020                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6021                 return -EOPNOTSUPP;
6022
6023         err = nl80211_parse_sta_txpower_setting(info, &params);
6024         if (err)
6025                 return err;
6026
6027         /* Include parameters for TDLS peer (will check later) */
6028         err = nl80211_set_station_tdls(info, &params);
6029         if (err)
6030                 return err;
6031
6032         params.vlan = get_vlan(info, rdev);
6033         if (IS_ERR(params.vlan))
6034                 return PTR_ERR(params.vlan);
6035
6036         switch (dev->ieee80211_ptr->iftype) {
6037         case NL80211_IFTYPE_AP:
6038         case NL80211_IFTYPE_AP_VLAN:
6039         case NL80211_IFTYPE_P2P_GO:
6040         case NL80211_IFTYPE_P2P_CLIENT:
6041         case NL80211_IFTYPE_STATION:
6042         case NL80211_IFTYPE_ADHOC:
6043         case NL80211_IFTYPE_MESH_POINT:
6044                 break;
6045         default:
6046                 err = -EOPNOTSUPP;
6047                 goto out_put_vlan;
6048         }
6049
6050         /* driver will call cfg80211_check_station_change() */
6051         err = rdev_change_station(rdev, dev, mac_addr, &params);
6052
6053  out_put_vlan:
6054         if (params.vlan)
6055                 dev_put(params.vlan);
6056
6057         return err;
6058 }
6059
6060 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6061 {
6062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6063         int err;
6064         struct net_device *dev = info->user_ptr[1];
6065         struct station_parameters params;
6066         u8 *mac_addr = NULL;
6067         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6068                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6069
6070         memset(&params, 0, sizeof(params));
6071
6072         if (!rdev->ops->add_station)
6073                 return -EOPNOTSUPP;
6074
6075         if (!info->attrs[NL80211_ATTR_MAC])
6076                 return -EINVAL;
6077
6078         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6079                 return -EINVAL;
6080
6081         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6082                 return -EINVAL;
6083
6084         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6085             !info->attrs[NL80211_ATTR_PEER_AID])
6086                 return -EINVAL;
6087
6088         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6089         params.supported_rates =
6090                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6091         params.supported_rates_len =
6092                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6093         params.listen_interval =
6094                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6095
6096         if (info->attrs[NL80211_ATTR_VLAN_ID])
6097                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6098
6099         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6100                 params.support_p2p_ps =
6101                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6102         } else {
6103                 /*
6104                  * if not specified, assume it's supported for P2P GO interface,
6105                  * and is NOT supported for AP interface
6106                  */
6107                 params.support_p2p_ps =
6108                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6109         }
6110
6111         if (info->attrs[NL80211_ATTR_PEER_AID])
6112                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6113         else
6114                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6115
6116         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6117                 params.capability =
6118                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6119                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6120         }
6121
6122         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6123                 params.ext_capab =
6124                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6125                 params.ext_capab_len =
6126                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6127         }
6128
6129         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6130                 params.ht_capa =
6131                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6132
6133         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6134                 params.vht_capa =
6135                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6136
6137         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6138                 params.he_capa =
6139                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6140                 params.he_capa_len =
6141                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6142
6143                 /* max len is validated in nla policy */
6144                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6145                         return -EINVAL;
6146         }
6147
6148         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6149                 params.he_6ghz_capa =
6150                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6151
6152         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6153                 params.opmode_notif_used = true;
6154                 params.opmode_notif =
6155                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6156         }
6157
6158         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6159                 params.plink_action =
6160                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6161
6162         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6163                 params.airtime_weight =
6164                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6165
6166         if (params.airtime_weight &&
6167             !wiphy_ext_feature_isset(&rdev->wiphy,
6168                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6169                 return -EOPNOTSUPP;
6170
6171         err = nl80211_parse_sta_txpower_setting(info, &params);
6172         if (err)
6173                 return err;
6174
6175         err = nl80211_parse_sta_channel_info(info, &params);
6176         if (err)
6177                 return err;
6178
6179         err = nl80211_parse_sta_wme(info, &params);
6180         if (err)
6181                 return err;
6182
6183         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6184                 return -EINVAL;
6185
6186         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6187          * as userspace might just pass through the capabilities from the IEs
6188          * directly, rather than enforcing this restriction and returning an
6189          * error in this case.
6190          */
6191         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6192                 params.ht_capa = NULL;
6193                 params.vht_capa = NULL;
6194
6195                 /* HE requires WME */
6196                 if (params.he_capa_len || params.he_6ghz_capa)
6197                         return -EINVAL;
6198         }
6199
6200         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6201         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6202                 return -EINVAL;
6203
6204         /* When you run into this, adjust the code below for the new flag */
6205         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6206
6207         switch (dev->ieee80211_ptr->iftype) {
6208         case NL80211_IFTYPE_AP:
6209         case NL80211_IFTYPE_AP_VLAN:
6210         case NL80211_IFTYPE_P2P_GO:
6211                 /* ignore WME attributes if iface/sta is not capable */
6212                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6213                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6214                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6215
6216                 /* TDLS peers cannot be added */
6217                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6218                     info->attrs[NL80211_ATTR_PEER_AID])
6219                         return -EINVAL;
6220                 /* but don't bother the driver with it */
6221                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6222
6223                 /* allow authenticated/associated only if driver handles it */
6224                 if (!(rdev->wiphy.features &
6225                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6226                     params.sta_flags_mask & auth_assoc)
6227                         return -EINVAL;
6228
6229                 /* Older userspace, or userspace wanting to be compatible with
6230                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6231                  * and assoc flags in the mask, but assumes the station will be
6232                  * added as associated anyway since this was the required driver
6233                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6234                  * introduced.
6235                  * In order to not bother drivers with this quirk in the API
6236                  * set the flags in both the mask and set for new stations in
6237                  * this case.
6238                  */
6239                 if (!(params.sta_flags_mask & auth_assoc)) {
6240                         params.sta_flags_mask |= auth_assoc;
6241                         params.sta_flags_set |= auth_assoc;
6242                 }
6243
6244                 /* must be last in here for error handling */
6245                 params.vlan = get_vlan(info, rdev);
6246                 if (IS_ERR(params.vlan))
6247                         return PTR_ERR(params.vlan);
6248                 break;
6249         case NL80211_IFTYPE_MESH_POINT:
6250                 /* ignore uAPSD data */
6251                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6252
6253                 /* associated is disallowed */
6254                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6255                         return -EINVAL;
6256                 /* TDLS peers cannot be added */
6257                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6258                     info->attrs[NL80211_ATTR_PEER_AID])
6259                         return -EINVAL;
6260                 break;
6261         case NL80211_IFTYPE_STATION:
6262         case NL80211_IFTYPE_P2P_CLIENT:
6263                 /* ignore uAPSD data */
6264                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6265
6266                 /* these are disallowed */
6267                 if (params.sta_flags_mask &
6268                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6269                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6270                         return -EINVAL;
6271                 /* Only TDLS peers can be added */
6272                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6273                         return -EINVAL;
6274                 /* Can only add if TDLS ... */
6275                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6276                         return -EOPNOTSUPP;
6277                 /* ... with external setup is supported */
6278                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6279                         return -EOPNOTSUPP;
6280                 /*
6281                  * Older wpa_supplicant versions always mark the TDLS peer
6282                  * as authorized, but it shouldn't yet be.
6283                  */
6284                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6285                 break;
6286         default:
6287                 return -EOPNOTSUPP;
6288         }
6289
6290         /* be aware of params.vlan when changing code here */
6291
6292         err = rdev_add_station(rdev, dev, mac_addr, &params);
6293
6294         if (params.vlan)
6295                 dev_put(params.vlan);
6296         return err;
6297 }
6298
6299 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6300 {
6301         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6302         struct net_device *dev = info->user_ptr[1];
6303         struct station_del_parameters params;
6304
6305         memset(&params, 0, sizeof(params));
6306
6307         if (info->attrs[NL80211_ATTR_MAC])
6308                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6309
6310         switch (dev->ieee80211_ptr->iftype) {
6311         case NL80211_IFTYPE_AP:
6312         case NL80211_IFTYPE_AP_VLAN:
6313         case NL80211_IFTYPE_MESH_POINT:
6314         case NL80211_IFTYPE_P2P_GO:
6315                 /* always accept these */
6316                 break;
6317         case NL80211_IFTYPE_ADHOC:
6318                 /* conditionally accept */
6319                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6320                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6321                         break;
6322                 return -EINVAL;
6323         default:
6324                 return -EINVAL;
6325         }
6326
6327         if (!rdev->ops->del_station)
6328                 return -EOPNOTSUPP;
6329
6330         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6331                 params.subtype =
6332                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6333                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6334                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6335                         return -EINVAL;
6336         } else {
6337                 /* Default to Deauthentication frame */
6338                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6339         }
6340
6341         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6342                 params.reason_code =
6343                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6344                 if (params.reason_code == 0)
6345                         return -EINVAL; /* 0 is reserved */
6346         } else {
6347                 /* Default to reason code 2 */
6348                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6349         }
6350
6351         return rdev_del_station(rdev, dev, &params);
6352 }
6353
6354 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6355                                 int flags, struct net_device *dev,
6356                                 u8 *dst, u8 *next_hop,
6357                                 struct mpath_info *pinfo)
6358 {
6359         void *hdr;
6360         struct nlattr *pinfoattr;
6361
6362         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6363         if (!hdr)
6364                 return -1;
6365
6366         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6367             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6368             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6369             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6370                 goto nla_put_failure;
6371
6372         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6373         if (!pinfoattr)
6374                 goto nla_put_failure;
6375         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6376             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6377                         pinfo->frame_qlen))
6378                 goto nla_put_failure;
6379         if (((pinfo->filled & MPATH_INFO_SN) &&
6380              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6381             ((pinfo->filled & MPATH_INFO_METRIC) &&
6382              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6383                          pinfo->metric)) ||
6384             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6385              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6386                          pinfo->exptime)) ||
6387             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6388              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6389                         pinfo->flags)) ||
6390             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6391              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6392                          pinfo->discovery_timeout)) ||
6393             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6394              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6395                         pinfo->discovery_retries)) ||
6396             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6397              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6398                         pinfo->hop_count)) ||
6399             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6400              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6401                          pinfo->path_change_count)))
6402                 goto nla_put_failure;
6403
6404         nla_nest_end(msg, pinfoattr);
6405
6406         genlmsg_end(msg, hdr);
6407         return 0;
6408
6409  nla_put_failure:
6410         genlmsg_cancel(msg, hdr);
6411         return -EMSGSIZE;
6412 }
6413
6414 static int nl80211_dump_mpath(struct sk_buff *skb,
6415                               struct netlink_callback *cb)
6416 {
6417         struct mpath_info pinfo;
6418         struct cfg80211_registered_device *rdev;
6419         struct wireless_dev *wdev;
6420         u8 dst[ETH_ALEN];
6421         u8 next_hop[ETH_ALEN];
6422         int path_idx = cb->args[2];
6423         int err;
6424
6425         rtnl_lock();
6426         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6427         if (err)
6428                 goto out_err;
6429
6430         if (!rdev->ops->dump_mpath) {
6431                 err = -EOPNOTSUPP;
6432                 goto out_err;
6433         }
6434
6435         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6436                 err = -EOPNOTSUPP;
6437                 goto out_err;
6438         }
6439
6440         while (1) {
6441                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6442                                       next_hop, &pinfo);
6443                 if (err == -ENOENT)
6444                         break;
6445                 if (err)
6446                         goto out_err;
6447
6448                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6449                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6450                                        wdev->netdev, dst, next_hop,
6451                                        &pinfo) < 0)
6452                         goto out;
6453
6454                 path_idx++;
6455         }
6456
6457  out:
6458         cb->args[2] = path_idx;
6459         err = skb->len;
6460  out_err:
6461         rtnl_unlock();
6462         return err;
6463 }
6464
6465 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6466 {
6467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6468         int err;
6469         struct net_device *dev = info->user_ptr[1];
6470         struct mpath_info pinfo;
6471         struct sk_buff *msg;
6472         u8 *dst = NULL;
6473         u8 next_hop[ETH_ALEN];
6474
6475         memset(&pinfo, 0, sizeof(pinfo));
6476
6477         if (!info->attrs[NL80211_ATTR_MAC])
6478                 return -EINVAL;
6479
6480         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6481
6482         if (!rdev->ops->get_mpath)
6483                 return -EOPNOTSUPP;
6484
6485         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6486                 return -EOPNOTSUPP;
6487
6488         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6489         if (err)
6490                 return err;
6491
6492         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6493         if (!msg)
6494                 return -ENOMEM;
6495
6496         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6497                                  dev, dst, next_hop, &pinfo) < 0) {
6498                 nlmsg_free(msg);
6499                 return -ENOBUFS;
6500         }
6501
6502         return genlmsg_reply(msg, info);
6503 }
6504
6505 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6506 {
6507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6508         struct net_device *dev = info->user_ptr[1];
6509         u8 *dst = NULL;
6510         u8 *next_hop = NULL;
6511
6512         if (!info->attrs[NL80211_ATTR_MAC])
6513                 return -EINVAL;
6514
6515         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6516                 return -EINVAL;
6517
6518         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6519         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6520
6521         if (!rdev->ops->change_mpath)
6522                 return -EOPNOTSUPP;
6523
6524         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6525                 return -EOPNOTSUPP;
6526
6527         return rdev_change_mpath(rdev, dev, dst, next_hop);
6528 }
6529
6530 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6531 {
6532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6533         struct net_device *dev = info->user_ptr[1];
6534         u8 *dst = NULL;
6535         u8 *next_hop = NULL;
6536
6537         if (!info->attrs[NL80211_ATTR_MAC])
6538                 return -EINVAL;
6539
6540         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6541                 return -EINVAL;
6542
6543         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6544         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6545
6546         if (!rdev->ops->add_mpath)
6547                 return -EOPNOTSUPP;
6548
6549         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6550                 return -EOPNOTSUPP;
6551
6552         return rdev_add_mpath(rdev, dev, dst, next_hop);
6553 }
6554
6555 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6556 {
6557         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6558         struct net_device *dev = info->user_ptr[1];
6559         u8 *dst = NULL;
6560
6561         if (info->attrs[NL80211_ATTR_MAC])
6562                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6563
6564         if (!rdev->ops->del_mpath)
6565                 return -EOPNOTSUPP;
6566
6567         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6568                 return -EOPNOTSUPP;
6569
6570         return rdev_del_mpath(rdev, dev, dst);
6571 }
6572
6573 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6574 {
6575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6576         int err;
6577         struct net_device *dev = info->user_ptr[1];
6578         struct mpath_info pinfo;
6579         struct sk_buff *msg;
6580         u8 *dst = NULL;
6581         u8 mpp[ETH_ALEN];
6582
6583         memset(&pinfo, 0, sizeof(pinfo));
6584
6585         if (!info->attrs[NL80211_ATTR_MAC])
6586                 return -EINVAL;
6587
6588         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6589
6590         if (!rdev->ops->get_mpp)
6591                 return -EOPNOTSUPP;
6592
6593         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6594                 return -EOPNOTSUPP;
6595
6596         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6597         if (err)
6598                 return err;
6599
6600         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6601         if (!msg)
6602                 return -ENOMEM;
6603
6604         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6605                                dev, dst, mpp, &pinfo) < 0) {
6606                 nlmsg_free(msg);
6607                 return -ENOBUFS;
6608         }
6609
6610         return genlmsg_reply(msg, info);
6611 }
6612
6613 static int nl80211_dump_mpp(struct sk_buff *skb,
6614                             struct netlink_callback *cb)
6615 {
6616         struct mpath_info pinfo;
6617         struct cfg80211_registered_device *rdev;
6618         struct wireless_dev *wdev;
6619         u8 dst[ETH_ALEN];
6620         u8 mpp[ETH_ALEN];
6621         int path_idx = cb->args[2];
6622         int err;
6623
6624         rtnl_lock();
6625         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6626         if (err)
6627                 goto out_err;
6628
6629         if (!rdev->ops->dump_mpp) {
6630                 err = -EOPNOTSUPP;
6631                 goto out_err;
6632         }
6633
6634         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6635                 err = -EOPNOTSUPP;
6636                 goto out_err;
6637         }
6638
6639         while (1) {
6640                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6641                                     mpp, &pinfo);
6642                 if (err == -ENOENT)
6643                         break;
6644                 if (err)
6645                         goto out_err;
6646
6647                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6648                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6649                                        wdev->netdev, dst, mpp,
6650                                        &pinfo) < 0)
6651                         goto out;
6652
6653                 path_idx++;
6654         }
6655
6656  out:
6657         cb->args[2] = path_idx;
6658         err = skb->len;
6659  out_err:
6660         rtnl_unlock();
6661         return err;
6662 }
6663
6664 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6665 {
6666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6667         struct net_device *dev = info->user_ptr[1];
6668         struct wireless_dev *wdev = dev->ieee80211_ptr;
6669         struct bss_parameters params;
6670         int err;
6671
6672         memset(&params, 0, sizeof(params));
6673         /* default to not changing parameters */
6674         params.use_cts_prot = -1;
6675         params.use_short_preamble = -1;
6676         params.use_short_slot_time = -1;
6677         params.ap_isolate = -1;
6678         params.ht_opmode = -1;
6679         params.p2p_ctwindow = -1;
6680         params.p2p_opp_ps = -1;
6681
6682         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6683                 params.use_cts_prot =
6684                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6685         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6686                 params.use_short_preamble =
6687                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6688         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6689                 params.use_short_slot_time =
6690                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6691         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6692                 params.basic_rates =
6693                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6694                 params.basic_rates_len =
6695                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6696         }
6697         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6698                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6699         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6700                 params.ht_opmode =
6701                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6702
6703         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6704                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6705                         return -EINVAL;
6706                 params.p2p_ctwindow =
6707                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6708                 if (params.p2p_ctwindow != 0 &&
6709                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6710                         return -EINVAL;
6711         }
6712
6713         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6714                 u8 tmp;
6715
6716                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6717                         return -EINVAL;
6718                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6719                 params.p2p_opp_ps = tmp;
6720                 if (params.p2p_opp_ps &&
6721                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6722                         return -EINVAL;
6723         }
6724
6725         if (!rdev->ops->change_bss)
6726                 return -EOPNOTSUPP;
6727
6728         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6729             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6730                 return -EOPNOTSUPP;
6731
6732         wdev_lock(wdev);
6733         err = rdev_change_bss(rdev, dev, &params);
6734         wdev_unlock(wdev);
6735
6736         return err;
6737 }
6738
6739 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6740 {
6741         char *data = NULL;
6742         bool is_indoor;
6743         enum nl80211_user_reg_hint_type user_reg_hint_type;
6744         u32 owner_nlportid;
6745
6746         /*
6747          * You should only get this when cfg80211 hasn't yet initialized
6748          * completely when built-in to the kernel right between the time
6749          * window between nl80211_init() and regulatory_init(), if that is
6750          * even possible.
6751          */
6752         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6753                 return -EINPROGRESS;
6754
6755         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6756                 user_reg_hint_type =
6757                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6758         else
6759                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6760
6761         switch (user_reg_hint_type) {
6762         case NL80211_USER_REG_HINT_USER:
6763         case NL80211_USER_REG_HINT_CELL_BASE:
6764                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6765                         return -EINVAL;
6766
6767                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6768                 return regulatory_hint_user(data, user_reg_hint_type);
6769         case NL80211_USER_REG_HINT_INDOOR:
6770                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6771                         owner_nlportid = info->snd_portid;
6772                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6773                 } else {
6774                         owner_nlportid = 0;
6775                         is_indoor = true;
6776                 }
6777
6778                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6779         default:
6780                 return -EINVAL;
6781         }
6782 }
6783
6784 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6785 {
6786         return reg_reload_regdb();
6787 }
6788
6789 static int nl80211_get_mesh_config(struct sk_buff *skb,
6790                                    struct genl_info *info)
6791 {
6792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6793         struct net_device *dev = info->user_ptr[1];
6794         struct wireless_dev *wdev = dev->ieee80211_ptr;
6795         struct mesh_config cur_params;
6796         int err = 0;
6797         void *hdr;
6798         struct nlattr *pinfoattr;
6799         struct sk_buff *msg;
6800
6801         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6802                 return -EOPNOTSUPP;
6803
6804         if (!rdev->ops->get_mesh_config)
6805                 return -EOPNOTSUPP;
6806
6807         wdev_lock(wdev);
6808         /* If not connected, get default parameters */
6809         if (!wdev->mesh_id_len)
6810                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6811         else
6812                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6813         wdev_unlock(wdev);
6814
6815         if (err)
6816                 return err;
6817
6818         /* Draw up a netlink message to send back */
6819         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6820         if (!msg)
6821                 return -ENOMEM;
6822         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6823                              NL80211_CMD_GET_MESH_CONFIG);
6824         if (!hdr)
6825                 goto out;
6826         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6827         if (!pinfoattr)
6828                 goto nla_put_failure;
6829         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6830             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6831                         cur_params.dot11MeshRetryTimeout) ||
6832             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6833                         cur_params.dot11MeshConfirmTimeout) ||
6834             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6835                         cur_params.dot11MeshHoldingTimeout) ||
6836             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6837                         cur_params.dot11MeshMaxPeerLinks) ||
6838             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6839                        cur_params.dot11MeshMaxRetries) ||
6840             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6841                        cur_params.dot11MeshTTL) ||
6842             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6843                        cur_params.element_ttl) ||
6844             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6845                        cur_params.auto_open_plinks) ||
6846             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6847                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6848             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6849                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6850             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6851                         cur_params.path_refresh_time) ||
6852             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6853                         cur_params.min_discovery_timeout) ||
6854             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6855                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6856             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6857                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6858             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6859                         cur_params.dot11MeshHWMPperrMinInterval) ||
6860             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6861                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6862             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6863                        cur_params.dot11MeshHWMPRootMode) ||
6864             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6865                         cur_params.dot11MeshHWMPRannInterval) ||
6866             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6867                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6868             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6869                        cur_params.dot11MeshForwarding) ||
6870             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6871                         cur_params.rssi_threshold) ||
6872             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6873                         cur_params.ht_opmode) ||
6874             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6875                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6876             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6877                         cur_params.dot11MeshHWMProotInterval) ||
6878             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6879                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6880             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6881                         cur_params.power_mode) ||
6882             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6883                         cur_params.dot11MeshAwakeWindowDuration) ||
6884             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6885                         cur_params.plink_timeout) ||
6886             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6887                        cur_params.dot11MeshConnectedToMeshGate))
6888                 goto nla_put_failure;
6889         nla_nest_end(msg, pinfoattr);
6890         genlmsg_end(msg, hdr);
6891         return genlmsg_reply(msg, info);
6892
6893  nla_put_failure:
6894  out:
6895         nlmsg_free(msg);
6896         return -ENOBUFS;
6897 }
6898
6899 static const struct nla_policy
6900 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6901         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6902                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6903         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6904                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6905         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6906                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6907         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6908                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6909         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6910         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6911         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6912         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6913         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6914                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6915         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6916         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6917         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6918         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6919         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6920                 NLA_POLICY_MIN(NLA_U16, 1),
6921         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6922                 NLA_POLICY_MIN(NLA_U16, 1),
6923         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6924                 NLA_POLICY_MIN(NLA_U16, 1),
6925         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6926         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6927                 NLA_POLICY_MIN(NLA_U16, 1),
6928         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6929         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6930         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6931                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6932         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6933         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6934         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6935                 NLA_POLICY_MIN(NLA_U16, 1),
6936         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6937                 NLA_POLICY_MIN(NLA_U16, 1),
6938         [NL80211_MESHCONF_POWER_MODE] =
6939                 NLA_POLICY_RANGE(NLA_U32,
6940                                  NL80211_MESH_POWER_ACTIVE,
6941                                  NL80211_MESH_POWER_MAX),
6942         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6943         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6944         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6945 };
6946
6947 static const struct nla_policy
6948         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6949         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6950         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6951         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6952         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6953         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6954         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6955         [NL80211_MESH_SETUP_IE] =
6956                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6957                                        IEEE80211_MAX_DATA_LEN),
6958         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6959 };
6960
6961 static int nl80211_parse_mesh_config(struct genl_info *info,
6962                                      struct mesh_config *cfg,
6963                                      u32 *mask_out)
6964 {
6965         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6966         u32 mask = 0;
6967         u16 ht_opmode;
6968
6969 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6970 do {                                                                    \
6971         if (tb[attr]) {                                                 \
6972                 cfg->param = fn(tb[attr]);                              \
6973                 mask |= BIT((attr) - 1);                                \
6974         }                                                               \
6975 } while (0)
6976
6977         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6978                 return -EINVAL;
6979         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6980                 return -EINVAL;
6981
6982         /* This makes sure that there aren't more than 32 mesh config
6983          * parameters (otherwise our bitfield scheme would not work.) */
6984         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6985
6986         /* Fill in the params struct */
6987         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6988                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6989         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6990                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6991                                   nla_get_u16);
6992         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6993                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6994                                   nla_get_u16);
6995         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6996                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6997                                   nla_get_u16);
6998         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6999                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7000         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7001                                   NL80211_MESHCONF_TTL, nla_get_u8);
7002         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7003                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7004         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7005                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7006                                   nla_get_u8);
7007         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7008                                   mask,
7009                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7010                                   nla_get_u32);
7011         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7012                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7013                                   nla_get_u8);
7014         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7015                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7016                                   nla_get_u32);
7017         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7018             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7019                 return -EINVAL;
7020         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7021                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7022                                   nla_get_u16);
7023         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7024                                   mask,
7025                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7026                                   nla_get_u32);
7027         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7028             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7029              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7030                 return -EINVAL;
7031         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7032                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7033                                   nla_get_u16);
7034         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7035                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7036                                   nla_get_u16);
7037         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7038                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7039                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7040                                   nla_get_u16);
7041         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7042                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7043         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7044                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7045                                   nla_get_u16);
7046         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7047                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7048                                   nla_get_u8);
7049         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7050                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7051         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7052                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7053                                   nla_get_s32);
7054         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7055                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7056                                   nla_get_u8);
7057         /*
7058          * Check HT operation mode based on
7059          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7060          */
7061         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7062                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7063
7064                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7065                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7066                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7067                         return -EINVAL;
7068
7069                 /* NON_HT_STA bit is reserved, but some programs set it */
7070                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7071
7072                 cfg->ht_opmode = ht_opmode;
7073                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7074         }
7075         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7076                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7077                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7078                                   nla_get_u32);
7079         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7080             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7081              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7082                 return -EINVAL;
7083         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7084                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7085                                   nla_get_u16);
7086         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7087                                   mask,
7088                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7089                                   nla_get_u16);
7090         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7091                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7092         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7093                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7094         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7095                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7096         if (mask_out)
7097                 *mask_out = mask;
7098
7099         return 0;
7100
7101 #undef FILL_IN_MESH_PARAM_IF_SET
7102 }
7103
7104 static int nl80211_parse_mesh_setup(struct genl_info *info,
7105                                      struct mesh_setup *setup)
7106 {
7107         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7108         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7109
7110         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7111                 return -EINVAL;
7112         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7113                 return -EINVAL;
7114
7115         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7116                 setup->sync_method =
7117                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7118                  IEEE80211_SYNC_METHOD_VENDOR :
7119                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7120
7121         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7122                 setup->path_sel_proto =
7123                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7124                  IEEE80211_PATH_PROTOCOL_VENDOR :
7125                  IEEE80211_PATH_PROTOCOL_HWMP;
7126
7127         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7128                 setup->path_metric =
7129                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7130                  IEEE80211_PATH_METRIC_VENDOR :
7131                  IEEE80211_PATH_METRIC_AIRTIME;
7132
7133         if (tb[NL80211_MESH_SETUP_IE]) {
7134                 struct nlattr *ieattr =
7135                         tb[NL80211_MESH_SETUP_IE];
7136                 setup->ie = nla_data(ieattr);
7137                 setup->ie_len = nla_len(ieattr);
7138         }
7139         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7140             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7141                 return -EINVAL;
7142         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7143         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7144         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7145         if (setup->is_secure)
7146                 setup->user_mpm = true;
7147
7148         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7149                 if (!setup->user_mpm)
7150                         return -EINVAL;
7151                 setup->auth_id =
7152                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7153         }
7154
7155         return 0;
7156 }
7157
7158 static int nl80211_update_mesh_config(struct sk_buff *skb,
7159                                       struct genl_info *info)
7160 {
7161         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7162         struct net_device *dev = info->user_ptr[1];
7163         struct wireless_dev *wdev = dev->ieee80211_ptr;
7164         struct mesh_config cfg;
7165         u32 mask;
7166         int err;
7167
7168         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7169                 return -EOPNOTSUPP;
7170
7171         if (!rdev->ops->update_mesh_config)
7172                 return -EOPNOTSUPP;
7173
7174         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7175         if (err)
7176                 return err;
7177
7178         wdev_lock(wdev);
7179         if (!wdev->mesh_id_len)
7180                 err = -ENOLINK;
7181
7182         if (!err)
7183                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7184
7185         wdev_unlock(wdev);
7186
7187         return err;
7188 }
7189
7190 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7191                               struct sk_buff *msg)
7192 {
7193         struct nlattr *nl_reg_rules;
7194         unsigned int i;
7195
7196         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7197             (regdom->dfs_region &&
7198              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7199                 goto nla_put_failure;
7200
7201         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7202         if (!nl_reg_rules)
7203                 goto nla_put_failure;
7204
7205         for (i = 0; i < regdom->n_reg_rules; i++) {
7206                 struct nlattr *nl_reg_rule;
7207                 const struct ieee80211_reg_rule *reg_rule;
7208                 const struct ieee80211_freq_range *freq_range;
7209                 const struct ieee80211_power_rule *power_rule;
7210                 unsigned int max_bandwidth_khz;
7211
7212                 reg_rule = &regdom->reg_rules[i];
7213                 freq_range = &reg_rule->freq_range;
7214                 power_rule = &reg_rule->power_rule;
7215
7216                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7217                 if (!nl_reg_rule)
7218                         goto nla_put_failure;
7219
7220                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7221                 if (!max_bandwidth_khz)
7222                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7223                                                                   reg_rule);
7224
7225                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7226                                 reg_rule->flags) ||
7227                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7228                                 freq_range->start_freq_khz) ||
7229                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7230                                 freq_range->end_freq_khz) ||
7231                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7232                                 max_bandwidth_khz) ||
7233                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7234                                 power_rule->max_antenna_gain) ||
7235                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7236                                 power_rule->max_eirp) ||
7237                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7238                                 reg_rule->dfs_cac_ms))
7239                         goto nla_put_failure;
7240
7241                 nla_nest_end(msg, nl_reg_rule);
7242         }
7243
7244         nla_nest_end(msg, nl_reg_rules);
7245         return 0;
7246
7247 nla_put_failure:
7248         return -EMSGSIZE;
7249 }
7250
7251 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7252 {
7253         const struct ieee80211_regdomain *regdom = NULL;
7254         struct cfg80211_registered_device *rdev;
7255         struct wiphy *wiphy = NULL;
7256         struct sk_buff *msg;
7257         void *hdr;
7258
7259         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7260         if (!msg)
7261                 return -ENOBUFS;
7262
7263         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7264                              NL80211_CMD_GET_REG);
7265         if (!hdr)
7266                 goto put_failure;
7267
7268         if (info->attrs[NL80211_ATTR_WIPHY]) {
7269                 bool self_managed;
7270
7271                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7272                 if (IS_ERR(rdev)) {
7273                         nlmsg_free(msg);
7274                         return PTR_ERR(rdev);
7275                 }
7276
7277                 wiphy = &rdev->wiphy;
7278                 self_managed = wiphy->regulatory_flags &
7279                                REGULATORY_WIPHY_SELF_MANAGED;
7280                 regdom = get_wiphy_regdom(wiphy);
7281
7282                 /* a self-managed-reg device must have a private regdom */
7283                 if (WARN_ON(!regdom && self_managed)) {
7284                         nlmsg_free(msg);
7285                         return -EINVAL;
7286                 }
7287
7288                 if (regdom &&
7289                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7290                         goto nla_put_failure;
7291         }
7292
7293         if (!wiphy && reg_last_request_cell_base() &&
7294             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7295                         NL80211_USER_REG_HINT_CELL_BASE))
7296                 goto nla_put_failure;
7297
7298         rcu_read_lock();
7299
7300         if (!regdom)
7301                 regdom = rcu_dereference(cfg80211_regdomain);
7302
7303         if (nl80211_put_regdom(regdom, msg))
7304                 goto nla_put_failure_rcu;
7305
7306         rcu_read_unlock();
7307
7308         genlmsg_end(msg, hdr);
7309         return genlmsg_reply(msg, info);
7310
7311 nla_put_failure_rcu:
7312         rcu_read_unlock();
7313 nla_put_failure:
7314 put_failure:
7315         nlmsg_free(msg);
7316         return -EMSGSIZE;
7317 }
7318
7319 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7320                                u32 seq, int flags, struct wiphy *wiphy,
7321                                const struct ieee80211_regdomain *regdom)
7322 {
7323         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7324                                    NL80211_CMD_GET_REG);
7325
7326         if (!hdr)
7327                 return -1;
7328
7329         genl_dump_check_consistent(cb, hdr);
7330
7331         if (nl80211_put_regdom(regdom, msg))
7332                 goto nla_put_failure;
7333
7334         if (!wiphy && reg_last_request_cell_base() &&
7335             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7336                         NL80211_USER_REG_HINT_CELL_BASE))
7337                 goto nla_put_failure;
7338
7339         if (wiphy &&
7340             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7341                 goto nla_put_failure;
7342
7343         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7344             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7345                 goto nla_put_failure;
7346
7347         genlmsg_end(msg, hdr);
7348         return 0;
7349
7350 nla_put_failure:
7351         genlmsg_cancel(msg, hdr);
7352         return -EMSGSIZE;
7353 }
7354
7355 static int nl80211_get_reg_dump(struct sk_buff *skb,
7356                                 struct netlink_callback *cb)
7357 {
7358         const struct ieee80211_regdomain *regdom = NULL;
7359         struct cfg80211_registered_device *rdev;
7360         int err, reg_idx, start = cb->args[2];
7361
7362         rtnl_lock();
7363
7364         if (cfg80211_regdomain && start == 0) {
7365                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7366                                           NLM_F_MULTI, NULL,
7367                                           rtnl_dereference(cfg80211_regdomain));
7368                 if (err < 0)
7369                         goto out_err;
7370         }
7371
7372         /* the global regdom is idx 0 */
7373         reg_idx = 1;
7374         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7375                 regdom = get_wiphy_regdom(&rdev->wiphy);
7376                 if (!regdom)
7377                         continue;
7378
7379                 if (++reg_idx <= start)
7380                         continue;
7381
7382                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7383                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7384                 if (err < 0) {
7385                         reg_idx--;
7386                         break;
7387                 }
7388         }
7389
7390         cb->args[2] = reg_idx;
7391         err = skb->len;
7392 out_err:
7393         rtnl_unlock();
7394         return err;
7395 }
7396
7397 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7398 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7399         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7400         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7401         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7402         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7403         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7404         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7405         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7406 };
7407
7408 static int parse_reg_rule(struct nlattr *tb[],
7409         struct ieee80211_reg_rule *reg_rule)
7410 {
7411         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7412         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7413
7414         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7415                 return -EINVAL;
7416         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7417                 return -EINVAL;
7418         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7419                 return -EINVAL;
7420         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7421                 return -EINVAL;
7422         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7423                 return -EINVAL;
7424
7425         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7426
7427         freq_range->start_freq_khz =
7428                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7429         freq_range->end_freq_khz =
7430                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7431         freq_range->max_bandwidth_khz =
7432                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7433
7434         power_rule->max_eirp =
7435                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7436
7437         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7438                 power_rule->max_antenna_gain =
7439                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7440
7441         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7442                 reg_rule->dfs_cac_ms =
7443                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7444
7445         return 0;
7446 }
7447
7448 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7449 {
7450         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7451         struct nlattr *nl_reg_rule;
7452         char *alpha2;
7453         int rem_reg_rules, r;
7454         u32 num_rules = 0, rule_idx = 0;
7455         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7456         struct ieee80211_regdomain *rd;
7457
7458         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7459                 return -EINVAL;
7460
7461         if (!info->attrs[NL80211_ATTR_REG_RULES])
7462                 return -EINVAL;
7463
7464         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7465
7466         if (info->attrs[NL80211_ATTR_DFS_REGION])
7467                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7468
7469         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7470                             rem_reg_rules) {
7471                 num_rules++;
7472                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7473                         return -EINVAL;
7474         }
7475
7476         if (!reg_is_valid_request(alpha2))
7477                 return -EINVAL;
7478
7479         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7480         if (!rd)
7481                 return -ENOMEM;
7482
7483         rd->n_reg_rules = num_rules;
7484         rd->alpha2[0] = alpha2[0];
7485         rd->alpha2[1] = alpha2[1];
7486
7487         /*
7488          * Disable DFS master mode if the DFS region was
7489          * not supported or known on this kernel.
7490          */
7491         if (reg_supported_dfs_region(dfs_region))
7492                 rd->dfs_region = dfs_region;
7493
7494         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7495                             rem_reg_rules) {
7496                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7497                                                 nl_reg_rule, reg_rule_policy,
7498                                                 info->extack);
7499                 if (r)
7500                         goto bad_reg;
7501                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7502                 if (r)
7503                         goto bad_reg;
7504
7505                 rule_idx++;
7506
7507                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7508                         r = -EINVAL;
7509                         goto bad_reg;
7510                 }
7511         }
7512
7513         /* set_regdom takes ownership of rd */
7514         return set_regdom(rd, REGD_SOURCE_CRDA);
7515  bad_reg:
7516         kfree(rd);
7517         return r;
7518 }
7519 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7520
7521 static int validate_scan_freqs(struct nlattr *freqs)
7522 {
7523         struct nlattr *attr1, *attr2;
7524         int n_channels = 0, tmp1, tmp2;
7525
7526         nla_for_each_nested(attr1, freqs, tmp1)
7527                 if (nla_len(attr1) != sizeof(u32))
7528                         return 0;
7529
7530         nla_for_each_nested(attr1, freqs, tmp1) {
7531                 n_channels++;
7532                 /*
7533                  * Some hardware has a limited channel list for
7534                  * scanning, and it is pretty much nonsensical
7535                  * to scan for a channel twice, so disallow that
7536                  * and don't require drivers to check that the
7537                  * channel list they get isn't longer than what
7538                  * they can scan, as long as they can scan all
7539                  * the channels they registered at once.
7540                  */
7541                 nla_for_each_nested(attr2, freqs, tmp2)
7542                         if (attr1 != attr2 &&
7543                             nla_get_u32(attr1) == nla_get_u32(attr2))
7544                                 return 0;
7545         }
7546
7547         return n_channels;
7548 }
7549
7550 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7551 {
7552         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7553 }
7554
7555 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7556                             struct cfg80211_bss_selection *bss_select)
7557 {
7558         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7559         struct nlattr *nest;
7560         int err;
7561         bool found = false;
7562         int i;
7563
7564         /* only process one nested attribute */
7565         nest = nla_data(nla);
7566         if (!nla_ok(nest, nla_len(nest)))
7567                 return -EINVAL;
7568
7569         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7570                                           nest, nl80211_bss_select_policy,
7571                                           NULL);
7572         if (err)
7573                 return err;
7574
7575         /* only one attribute may be given */
7576         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7577                 if (attr[i]) {
7578                         if (found)
7579                                 return -EINVAL;
7580                         found = true;
7581                 }
7582         }
7583
7584         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7585
7586         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7587                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7588
7589         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7590                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7591                 bss_select->param.band_pref =
7592                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7593                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7594                         return -EINVAL;
7595         }
7596
7597         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7598                 struct nl80211_bss_select_rssi_adjust *adj_param;
7599
7600                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7601                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7602                 bss_select->param.adjust.band = adj_param->band;
7603                 bss_select->param.adjust.delta = adj_param->delta;
7604                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7605                         return -EINVAL;
7606         }
7607
7608         /* user-space did not provide behaviour attribute */
7609         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7610                 return -EINVAL;
7611
7612         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7613                 return -EINVAL;
7614
7615         return 0;
7616 }
7617
7618 int nl80211_parse_random_mac(struct nlattr **attrs,
7619                              u8 *mac_addr, u8 *mac_addr_mask)
7620 {
7621         int i;
7622
7623         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7624                 eth_zero_addr(mac_addr);
7625                 eth_zero_addr(mac_addr_mask);
7626                 mac_addr[0] = 0x2;
7627                 mac_addr_mask[0] = 0x3;
7628
7629                 return 0;
7630         }
7631
7632         /* need both or none */
7633         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7634                 return -EINVAL;
7635
7636         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7637         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7638
7639         /* don't allow or configure an mcast address */
7640         if (!is_multicast_ether_addr(mac_addr_mask) ||
7641             is_multicast_ether_addr(mac_addr))
7642                 return -EINVAL;
7643
7644         /*
7645          * allow users to pass a MAC address that has bits set outside
7646          * of the mask, but don't bother drivers with having to deal
7647          * with such bits
7648          */
7649         for (i = 0; i < ETH_ALEN; i++)
7650                 mac_addr[i] &= mac_addr_mask[i];
7651
7652         return 0;
7653 }
7654
7655 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7656 {
7657         ASSERT_WDEV_LOCK(wdev);
7658
7659         if (!cfg80211_beaconing_iface_active(wdev))
7660                 return true;
7661
7662         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7663                 return true;
7664
7665         return regulatory_pre_cac_allowed(wdev->wiphy);
7666 }
7667
7668 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7669                                     enum nl80211_ext_feature_index feat)
7670 {
7671         if (!(flags & flag))
7672                 return true;
7673         if (wiphy_ext_feature_isset(wiphy, feat))
7674                 return true;
7675         return false;
7676 }
7677
7678 static int
7679 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7680                          void *request, struct nlattr **attrs,
7681                          bool is_sched_scan)
7682 {
7683         u8 *mac_addr, *mac_addr_mask;
7684         u32 *flags;
7685         enum nl80211_feature_flags randomness_flag;
7686
7687         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7688                 return 0;
7689
7690         if (is_sched_scan) {
7691                 struct cfg80211_sched_scan_request *req = request;
7692
7693                 randomness_flag = wdev ?
7694                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7695                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7696                 flags = &req->flags;
7697                 mac_addr = req->mac_addr;
7698                 mac_addr_mask = req->mac_addr_mask;
7699         } else {
7700                 struct cfg80211_scan_request *req = request;
7701
7702                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7703                 flags = &req->flags;
7704                 mac_addr = req->mac_addr;
7705                 mac_addr_mask = req->mac_addr_mask;
7706         }
7707
7708         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7709
7710         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7711              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7712             !nl80211_check_scan_feat(wiphy, *flags,
7713                                      NL80211_SCAN_FLAG_LOW_SPAN,
7714                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7715             !nl80211_check_scan_feat(wiphy, *flags,
7716                                      NL80211_SCAN_FLAG_LOW_POWER,
7717                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7718             !nl80211_check_scan_feat(wiphy, *flags,
7719                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7720                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7721             !nl80211_check_scan_feat(wiphy, *flags,
7722                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7723                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7724             !nl80211_check_scan_feat(wiphy, *flags,
7725                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7726                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7727             !nl80211_check_scan_feat(wiphy, *flags,
7728                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7729                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7730             !nl80211_check_scan_feat(wiphy, *flags,
7731                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7732                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7733             !nl80211_check_scan_feat(wiphy, *flags,
7734                                      NL80211_SCAN_FLAG_RANDOM_SN,
7735                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7736             !nl80211_check_scan_feat(wiphy, *flags,
7737                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7738                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7739                 return -EOPNOTSUPP;
7740
7741         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7742                 int err;
7743
7744                 if (!(wiphy->features & randomness_flag) ||
7745                     (wdev && wdev->current_bss))
7746                         return -EOPNOTSUPP;
7747
7748                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7749                 if (err)
7750                         return err;
7751         }
7752
7753         return 0;
7754 }
7755
7756 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7757 {
7758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7759         struct wireless_dev *wdev = info->user_ptr[1];
7760         struct cfg80211_scan_request *request;
7761         struct nlattr *scan_freqs = NULL;
7762         bool scan_freqs_khz = false;
7763         struct nlattr *attr;
7764         struct wiphy *wiphy;
7765         int err, tmp, n_ssids = 0, n_channels, i;
7766         size_t ie_len;
7767
7768         wiphy = &rdev->wiphy;
7769
7770         if (wdev->iftype == NL80211_IFTYPE_NAN)
7771                 return -EOPNOTSUPP;
7772
7773         if (!rdev->ops->scan)
7774                 return -EOPNOTSUPP;
7775
7776         if (rdev->scan_req || rdev->scan_msg) {
7777                 err = -EBUSY;
7778                 goto unlock;
7779         }
7780
7781         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
7782                 if (!wiphy_ext_feature_isset(wiphy,
7783                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
7784                         return -EOPNOTSUPP;
7785                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
7786                 scan_freqs_khz = true;
7787         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
7788                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
7789
7790         if (scan_freqs) {
7791                 n_channels = validate_scan_freqs(scan_freqs);
7792                 if (!n_channels) {
7793                         err = -EINVAL;
7794                         goto unlock;
7795                 }
7796         } else {
7797                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7798         }
7799
7800         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7801                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7802                         n_ssids++;
7803
7804         if (n_ssids > wiphy->max_scan_ssids) {
7805                 err = -EINVAL;
7806                 goto unlock;
7807         }
7808
7809         if (info->attrs[NL80211_ATTR_IE])
7810                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7811         else
7812                 ie_len = 0;
7813
7814         if (ie_len > wiphy->max_scan_ie_len) {
7815                 err = -EINVAL;
7816                 goto unlock;
7817         }
7818
7819         request = kzalloc(sizeof(*request)
7820                         + sizeof(*request->ssids) * n_ssids
7821                         + sizeof(*request->channels) * n_channels
7822                         + ie_len, GFP_KERNEL);
7823         if (!request) {
7824                 err = -ENOMEM;
7825                 goto unlock;
7826         }
7827
7828         if (n_ssids)
7829                 request->ssids = (void *)&request->channels[n_channels];
7830         request->n_ssids = n_ssids;
7831         if (ie_len) {
7832                 if (n_ssids)
7833                         request->ie = (void *)(request->ssids + n_ssids);
7834                 else
7835                         request->ie = (void *)(request->channels + n_channels);
7836         }
7837
7838         i = 0;
7839         if (scan_freqs) {
7840                 /* user specified, bail out if channel not found */
7841                 nla_for_each_nested(attr, scan_freqs, tmp) {
7842                         struct ieee80211_channel *chan;
7843                         int freq = nla_get_u32(attr);
7844
7845                         if (!scan_freqs_khz)
7846                                 freq = MHZ_TO_KHZ(freq);
7847
7848                         chan = ieee80211_get_channel_khz(wiphy, freq);
7849                         if (!chan) {
7850                                 err = -EINVAL;
7851                                 goto out_free;
7852                         }
7853
7854                         /* ignore disabled channels */
7855                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7856                                 continue;
7857
7858                         request->channels[i] = chan;
7859                         i++;
7860                 }
7861         } else {
7862                 enum nl80211_band band;
7863
7864                 /* all channels */
7865                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7866                         int j;
7867
7868                         if (!wiphy->bands[band])
7869                                 continue;
7870                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7871                                 struct ieee80211_channel *chan;
7872
7873                                 chan = &wiphy->bands[band]->channels[j];
7874
7875                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7876                                         continue;
7877
7878                                 request->channels[i] = chan;
7879                                 i++;
7880                         }
7881                 }
7882         }
7883
7884         if (!i) {
7885                 err = -EINVAL;
7886                 goto out_free;
7887         }
7888
7889         request->n_channels = i;
7890
7891         wdev_lock(wdev);
7892         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7893                 struct ieee80211_channel *chan;
7894
7895                 if (request->n_channels != 1) {
7896                         wdev_unlock(wdev);
7897                         err = -EBUSY;
7898                         goto out_free;
7899                 }
7900
7901                 chan = request->channels[0];
7902                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7903                         wdev_unlock(wdev);
7904                         err = -EBUSY;
7905                         goto out_free;
7906                 }
7907         }
7908         wdev_unlock(wdev);
7909
7910         i = 0;
7911         if (n_ssids) {
7912                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7913                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7914                                 err = -EINVAL;
7915                                 goto out_free;
7916                         }
7917                         request->ssids[i].ssid_len = nla_len(attr);
7918                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7919                         i++;
7920                 }
7921         }
7922
7923         if (info->attrs[NL80211_ATTR_IE]) {
7924                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7925                 memcpy((void *)request->ie,
7926                        nla_data(info->attrs[NL80211_ATTR_IE]),
7927                        request->ie_len);
7928         }
7929
7930         for (i = 0; i < NUM_NL80211_BANDS; i++)
7931                 if (wiphy->bands[i])
7932                         request->rates[i] =
7933                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7934
7935         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7936                 nla_for_each_nested(attr,
7937                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7938                                     tmp) {
7939                         enum nl80211_band band = nla_type(attr);
7940
7941                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7942                                 err = -EINVAL;
7943                                 goto out_free;
7944                         }
7945
7946                         if (!wiphy->bands[band])
7947                                 continue;
7948
7949                         err = ieee80211_get_ratemask(wiphy->bands[band],
7950                                                      nla_data(attr),
7951                                                      nla_len(attr),
7952                                                      &request->rates[band]);
7953                         if (err)
7954                                 goto out_free;
7955                 }
7956         }
7957
7958         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7959                 if (!wiphy_ext_feature_isset(wiphy,
7960                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7961                         err = -EOPNOTSUPP;
7962                         goto out_free;
7963                 }
7964
7965                 request->duration =
7966                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7967                 request->duration_mandatory =
7968                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7969         }
7970
7971         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7972                                        false);
7973         if (err)
7974                 goto out_free;
7975
7976         request->no_cck =
7977                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7978
7979         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7980          * BSSID to scan for. This was problematic because that same attribute
7981          * was already used for another purpose (local random MAC address). The
7982          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7983          * compatibility with older userspace components, also use the
7984          * NL80211_ATTR_MAC value here if it can be determined to be used for
7985          * the specific BSSID use case instead of the random MAC address
7986          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7987          */
7988         if (info->attrs[NL80211_ATTR_BSSID])
7989                 memcpy(request->bssid,
7990                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7991         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7992                  info->attrs[NL80211_ATTR_MAC])
7993                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7994                        ETH_ALEN);
7995         else
7996                 eth_broadcast_addr(request->bssid);
7997
7998         request->wdev = wdev;
7999         request->wiphy = &rdev->wiphy;
8000         request->scan_start = jiffies;
8001
8002         rdev->scan_req = request;
8003         err = rdev_scan(rdev, request);
8004
8005         if (!err) {
8006                 nl80211_send_scan_start(rdev, wdev);
8007                 if (wdev->netdev)
8008                         dev_hold(wdev->netdev);
8009         } else {
8010  out_free:
8011                 rdev->scan_req = NULL;
8012                 kfree(request);
8013         }
8014
8015  unlock:
8016         return err;
8017 }
8018
8019 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8020 {
8021         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8022         struct wireless_dev *wdev = info->user_ptr[1];
8023
8024         if (!rdev->ops->abort_scan)
8025                 return -EOPNOTSUPP;
8026
8027         if (rdev->scan_msg)
8028                 return 0;
8029
8030         if (!rdev->scan_req)
8031                 return -ENOENT;
8032
8033         rdev_abort_scan(rdev, wdev);
8034         return 0;
8035 }
8036
8037 static int
8038 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8039                                struct cfg80211_sched_scan_request *request,
8040                                struct nlattr **attrs)
8041 {
8042         int tmp, err, i = 0;
8043         struct nlattr *attr;
8044
8045         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8046                 u32 interval;
8047
8048                 /*
8049                  * If scan plans are not specified,
8050                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8051                  * case one scan plan will be set with the specified scan
8052                  * interval and infinite number of iterations.
8053                  */
8054                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8055                 if (!interval)
8056                         return -EINVAL;
8057
8058                 request->scan_plans[0].interval =
8059                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8060                 if (!request->scan_plans[0].interval)
8061                         return -EINVAL;
8062
8063                 if (request->scan_plans[0].interval >
8064                     wiphy->max_sched_scan_plan_interval)
8065                         request->scan_plans[0].interval =
8066                                 wiphy->max_sched_scan_plan_interval;
8067
8068                 return 0;
8069         }
8070
8071         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8072                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8073
8074                 if (WARN_ON(i >= n_plans))
8075                         return -EINVAL;
8076
8077                 err = nla_parse_nested_deprecated(plan,
8078                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8079                                                   attr, nl80211_plan_policy,
8080                                                   NULL);
8081                 if (err)
8082                         return err;
8083
8084                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8085                         return -EINVAL;
8086
8087                 request->scan_plans[i].interval =
8088                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8089                 if (!request->scan_plans[i].interval ||
8090                     request->scan_plans[i].interval >
8091                     wiphy->max_sched_scan_plan_interval)
8092                         return -EINVAL;
8093
8094                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8095                         request->scan_plans[i].iterations =
8096                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8097                         if (!request->scan_plans[i].iterations ||
8098                             (request->scan_plans[i].iterations >
8099                              wiphy->max_sched_scan_plan_iterations))
8100                                 return -EINVAL;
8101                 } else if (i < n_plans - 1) {
8102                         /*
8103                          * All scan plans but the last one must specify
8104                          * a finite number of iterations
8105                          */
8106                         return -EINVAL;
8107                 }
8108
8109                 i++;
8110         }
8111
8112         /*
8113          * The last scan plan must not specify the number of
8114          * iterations, it is supposed to run infinitely
8115          */
8116         if (request->scan_plans[n_plans - 1].iterations)
8117                 return  -EINVAL;
8118
8119         return 0;
8120 }
8121
8122 static int
8123 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8124                                        struct cfg80211_match_set *match_sets,
8125                                        struct nlattr *tb_band_rssi,
8126                                        s32 rssi_thold)
8127 {
8128         struct nlattr *attr;
8129         int i, tmp, ret = 0;
8130
8131         if (!wiphy_ext_feature_isset(wiphy,
8132                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8133                 if (tb_band_rssi)
8134                         ret = -EOPNOTSUPP;
8135                 else
8136                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8137                                 match_sets->per_band_rssi_thold[i] =
8138                                         NL80211_SCAN_RSSI_THOLD_OFF;
8139                 return ret;
8140         }
8141
8142         for (i = 0; i < NUM_NL80211_BANDS; i++)
8143                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8144
8145         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8146                 enum nl80211_band band = nla_type(attr);
8147
8148                 if (band < 0 || band >= NUM_NL80211_BANDS)
8149                         return -EINVAL;
8150
8151                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8152         }
8153
8154         return 0;
8155 }
8156
8157 static struct cfg80211_sched_scan_request *
8158 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8159                          struct nlattr **attrs, int max_match_sets)
8160 {
8161         struct cfg80211_sched_scan_request *request;
8162         struct nlattr *attr;
8163         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8164         enum nl80211_band band;
8165         size_t ie_len;
8166         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8167         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8168
8169         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8170                 n_channels = validate_scan_freqs(
8171                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8172                 if (!n_channels)
8173                         return ERR_PTR(-EINVAL);
8174         } else {
8175                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8176         }
8177
8178         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8179                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8180                                     tmp)
8181                         n_ssids++;
8182
8183         if (n_ssids > wiphy->max_sched_scan_ssids)
8184                 return ERR_PTR(-EINVAL);
8185
8186         /*
8187          * First, count the number of 'real' matchsets. Due to an issue with
8188          * the old implementation, matchsets containing only the RSSI attribute
8189          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8190          * RSSI for all matchsets, rather than their own matchset for reporting
8191          * all APs with a strong RSSI. This is needed to be compatible with
8192          * older userspace that treated a matchset with only the RSSI as the
8193          * global RSSI for all other matchsets - if there are other matchsets.
8194          */
8195         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8196                 nla_for_each_nested(attr,
8197                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8198                                     tmp) {
8199                         struct nlattr *rssi;
8200
8201                         err = nla_parse_nested_deprecated(tb,
8202                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8203                                                           attr,
8204                                                           nl80211_match_policy,
8205                                                           NULL);
8206                         if (err)
8207                                 return ERR_PTR(err);
8208
8209                         /* SSID and BSSID are mutually exclusive */
8210                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8211                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8212                                 return ERR_PTR(-EINVAL);
8213
8214                         /* add other standalone attributes here */
8215                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8216                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8217                                 n_match_sets++;
8218                                 continue;
8219                         }
8220                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8221                         if (rssi)
8222                                 default_match_rssi = nla_get_s32(rssi);
8223                 }
8224         }
8225
8226         /* However, if there's no other matchset, add the RSSI one */
8227         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8228                 n_match_sets = 1;
8229
8230         if (n_match_sets > max_match_sets)
8231                 return ERR_PTR(-EINVAL);
8232
8233         if (attrs[NL80211_ATTR_IE])
8234                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8235         else
8236                 ie_len = 0;
8237
8238         if (ie_len > wiphy->max_sched_scan_ie_len)
8239                 return ERR_PTR(-EINVAL);
8240
8241         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8242                 /*
8243                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8244                  * each scan plan already specifies its own interval
8245                  */
8246                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8247                         return ERR_PTR(-EINVAL);
8248
8249                 nla_for_each_nested(attr,
8250                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8251                         n_plans++;
8252         } else {
8253                 /*
8254                  * The scan interval attribute is kept for backward
8255                  * compatibility. If no scan plans are specified and sched scan
8256                  * interval is specified, one scan plan will be set with this
8257                  * scan interval and infinite number of iterations.
8258                  */
8259                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8260                         return ERR_PTR(-EINVAL);
8261
8262                 n_plans = 1;
8263         }
8264
8265         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8266                 return ERR_PTR(-EINVAL);
8267
8268         if (!wiphy_ext_feature_isset(
8269                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8270             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8271              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8272                 return ERR_PTR(-EINVAL);
8273
8274         request = kzalloc(sizeof(*request)
8275                         + sizeof(*request->ssids) * n_ssids
8276                         + sizeof(*request->match_sets) * n_match_sets
8277                         + sizeof(*request->scan_plans) * n_plans
8278                         + sizeof(*request->channels) * n_channels
8279                         + ie_len, GFP_KERNEL);
8280         if (!request)
8281                 return ERR_PTR(-ENOMEM);
8282
8283         if (n_ssids)
8284                 request->ssids = (void *)&request->channels[n_channels];
8285         request->n_ssids = n_ssids;
8286         if (ie_len) {
8287                 if (n_ssids)
8288                         request->ie = (void *)(request->ssids + n_ssids);
8289                 else
8290                         request->ie = (void *)(request->channels + n_channels);
8291         }
8292
8293         if (n_match_sets) {
8294                 if (request->ie)
8295                         request->match_sets = (void *)(request->ie + ie_len);
8296                 else if (n_ssids)
8297                         request->match_sets =
8298                                 (void *)(request->ssids + n_ssids);
8299                 else
8300                         request->match_sets =
8301                                 (void *)(request->channels + n_channels);
8302         }
8303         request->n_match_sets = n_match_sets;
8304
8305         if (n_match_sets)
8306                 request->scan_plans = (void *)(request->match_sets +
8307                                                n_match_sets);
8308         else if (request->ie)
8309                 request->scan_plans = (void *)(request->ie + ie_len);
8310         else if (n_ssids)
8311                 request->scan_plans = (void *)(request->ssids + n_ssids);
8312         else
8313                 request->scan_plans = (void *)(request->channels + n_channels);
8314
8315         request->n_scan_plans = n_plans;
8316
8317         i = 0;
8318         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8319                 /* user specified, bail out if channel not found */
8320                 nla_for_each_nested(attr,
8321                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8322                                     tmp) {
8323                         struct ieee80211_channel *chan;
8324
8325                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8326
8327                         if (!chan) {
8328                                 err = -EINVAL;
8329                                 goto out_free;
8330                         }
8331
8332                         /* ignore disabled channels */
8333                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8334                                 continue;
8335
8336                         request->channels[i] = chan;
8337                         i++;
8338                 }
8339         } else {
8340                 /* all channels */
8341                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8342                         int j;
8343
8344                         if (!wiphy->bands[band])
8345                                 continue;
8346                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8347                                 struct ieee80211_channel *chan;
8348
8349                                 chan = &wiphy->bands[band]->channels[j];
8350
8351                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8352                                         continue;
8353
8354                                 request->channels[i] = chan;
8355                                 i++;
8356                         }
8357                 }
8358         }
8359
8360         if (!i) {
8361                 err = -EINVAL;
8362                 goto out_free;
8363         }
8364
8365         request->n_channels = i;
8366
8367         i = 0;
8368         if (n_ssids) {
8369                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8370                                     tmp) {
8371                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8372                                 err = -EINVAL;
8373                                 goto out_free;
8374                         }
8375                         request->ssids[i].ssid_len = nla_len(attr);
8376                         memcpy(request->ssids[i].ssid, nla_data(attr),
8377                                nla_len(attr));
8378                         i++;
8379                 }
8380         }
8381
8382         i = 0;
8383         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8384                 nla_for_each_nested(attr,
8385                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8386                                     tmp) {
8387                         struct nlattr *ssid, *bssid, *rssi;
8388
8389                         err = nla_parse_nested_deprecated(tb,
8390                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8391                                                           attr,
8392                                                           nl80211_match_policy,
8393                                                           NULL);
8394                         if (err)
8395                                 goto out_free;
8396                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8397                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8398
8399                         if (!ssid && !bssid) {
8400                                 i++;
8401                                 continue;
8402                         }
8403
8404                         if (WARN_ON(i >= n_match_sets)) {
8405                                 /* this indicates a programming error,
8406                                  * the loop above should have verified
8407                                  * things properly
8408                                  */
8409                                 err = -EINVAL;
8410                                 goto out_free;
8411                         }
8412
8413                         if (ssid) {
8414                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8415                                         err = -EINVAL;
8416                                         goto out_free;
8417                                 }
8418                                 memcpy(request->match_sets[i].ssid.ssid,
8419                                        nla_data(ssid), nla_len(ssid));
8420                                 request->match_sets[i].ssid.ssid_len =
8421                                         nla_len(ssid);
8422                         }
8423                         if (bssid) {
8424                                 if (nla_len(bssid) != ETH_ALEN) {
8425                                         err = -EINVAL;
8426                                         goto out_free;
8427                                 }
8428                                 memcpy(request->match_sets[i].bssid,
8429                                        nla_data(bssid), ETH_ALEN);
8430                         }
8431
8432                         /* special attribute - old implementation w/a */
8433                         request->match_sets[i].rssi_thold = default_match_rssi;
8434                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8435                         if (rssi)
8436                                 request->match_sets[i].rssi_thold =
8437                                         nla_get_s32(rssi);
8438
8439                         /* Parse per band RSSI attribute */
8440                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8441                                 &request->match_sets[i],
8442                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8443                                 request->match_sets[i].rssi_thold);
8444                         if (err)
8445                                 goto out_free;
8446
8447                         i++;
8448                 }
8449
8450                 /* there was no other matchset, so the RSSI one is alone */
8451                 if (i == 0 && n_match_sets)
8452                         request->match_sets[0].rssi_thold = default_match_rssi;
8453
8454                 request->min_rssi_thold = INT_MAX;
8455                 for (i = 0; i < n_match_sets; i++)
8456                         request->min_rssi_thold =
8457                                 min(request->match_sets[i].rssi_thold,
8458                                     request->min_rssi_thold);
8459         } else {
8460                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8461         }
8462
8463         if (ie_len) {
8464                 request->ie_len = ie_len;
8465                 memcpy((void *)request->ie,
8466                        nla_data(attrs[NL80211_ATTR_IE]),
8467                        request->ie_len);
8468         }
8469
8470         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8471         if (err)
8472                 goto out_free;
8473
8474         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8475                 request->delay =
8476                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8477
8478         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8479                 request->relative_rssi = nla_get_s8(
8480                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8481                 request->relative_rssi_set = true;
8482         }
8483
8484         if (request->relative_rssi_set &&
8485             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8486                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8487
8488                 rssi_adjust = nla_data(
8489                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8490                 request->rssi_adjust.band = rssi_adjust->band;
8491                 request->rssi_adjust.delta = rssi_adjust->delta;
8492                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8493                         err = -EINVAL;
8494                         goto out_free;
8495                 }
8496         }
8497
8498         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8499         if (err)
8500                 goto out_free;
8501
8502         request->scan_start = jiffies;
8503
8504         return request;
8505
8506 out_free:
8507         kfree(request);
8508         return ERR_PTR(err);
8509 }
8510
8511 static int nl80211_start_sched_scan(struct sk_buff *skb,
8512                                     struct genl_info *info)
8513 {
8514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8515         struct net_device *dev = info->user_ptr[1];
8516         struct wireless_dev *wdev = dev->ieee80211_ptr;
8517         struct cfg80211_sched_scan_request *sched_scan_req;
8518         bool want_multi;
8519         int err;
8520
8521         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8522                 return -EOPNOTSUPP;
8523
8524         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8525         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8526         if (err)
8527                 return err;
8528
8529         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8530                                                   info->attrs,
8531                                                   rdev->wiphy.max_match_sets);
8532
8533         err = PTR_ERR_OR_ZERO(sched_scan_req);
8534         if (err)
8535                 goto out_err;
8536
8537         /* leave request id zero for legacy request
8538          * or if driver does not support multi-scheduled scan
8539          */
8540         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8541                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8542
8543         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8544         if (err)
8545                 goto out_free;
8546
8547         sched_scan_req->dev = dev;
8548         sched_scan_req->wiphy = &rdev->wiphy;
8549
8550         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8551                 sched_scan_req->owner_nlportid = info->snd_portid;
8552
8553         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8554
8555         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8556         return 0;
8557
8558 out_free:
8559         kfree(sched_scan_req);
8560 out_err:
8561         return err;
8562 }
8563
8564 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8565                                    struct genl_info *info)
8566 {
8567         struct cfg80211_sched_scan_request *req;
8568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8569         u64 cookie;
8570
8571         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8572                 return -EOPNOTSUPP;
8573
8574         if (info->attrs[NL80211_ATTR_COOKIE]) {
8575                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8576                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8577         }
8578
8579         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8580                                      struct cfg80211_sched_scan_request,
8581                                      list);
8582         if (!req || req->reqid ||
8583             (req->owner_nlportid &&
8584              req->owner_nlportid != info->snd_portid))
8585                 return -ENOENT;
8586
8587         return cfg80211_stop_sched_scan_req(rdev, req, false);
8588 }
8589
8590 static int nl80211_start_radar_detection(struct sk_buff *skb,
8591                                          struct genl_info *info)
8592 {
8593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8594         struct net_device *dev = info->user_ptr[1];
8595         struct wireless_dev *wdev = dev->ieee80211_ptr;
8596         struct wiphy *wiphy = wdev->wiphy;
8597         struct cfg80211_chan_def chandef;
8598         enum nl80211_dfs_regions dfs_region;
8599         unsigned int cac_time_ms;
8600         int err;
8601
8602         dfs_region = reg_get_dfs_region(wiphy);
8603         if (dfs_region == NL80211_DFS_UNSET)
8604                 return -EINVAL;
8605
8606         err = nl80211_parse_chandef(rdev, info, &chandef);
8607         if (err)
8608                 return err;
8609
8610         if (netif_carrier_ok(dev))
8611                 return -EBUSY;
8612
8613         if (wdev->cac_started)
8614                 return -EBUSY;
8615
8616         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8617         if (err < 0)
8618                 return err;
8619
8620         if (err == 0)
8621                 return -EINVAL;
8622
8623         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8624                 return -EINVAL;
8625
8626         /* CAC start is offloaded to HW and can't be started manually */
8627         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8628                 return -EOPNOTSUPP;
8629
8630         if (!rdev->ops->start_radar_detection)
8631                 return -EOPNOTSUPP;
8632
8633         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8634         if (WARN_ON(!cac_time_ms))
8635                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8636
8637         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8638         if (!err) {
8639                 wdev->chandef = chandef;
8640                 wdev->cac_started = true;
8641                 wdev->cac_start_time = jiffies;
8642                 wdev->cac_time_ms = cac_time_ms;
8643         }
8644         return err;
8645 }
8646
8647 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8648                                           struct genl_info *info)
8649 {
8650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8651         struct net_device *dev = info->user_ptr[1];
8652         struct wireless_dev *wdev = dev->ieee80211_ptr;
8653         struct wiphy *wiphy = wdev->wiphy;
8654         struct cfg80211_chan_def chandef;
8655         enum nl80211_dfs_regions dfs_region;
8656         int err;
8657
8658         dfs_region = reg_get_dfs_region(wiphy);
8659         if (dfs_region == NL80211_DFS_UNSET) {
8660                 GENL_SET_ERR_MSG(info,
8661                                  "DFS Region is not set. Unexpected Radar indication");
8662                 return -EINVAL;
8663         }
8664
8665         err = nl80211_parse_chandef(rdev, info, &chandef);
8666         if (err) {
8667                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8668                 return err;
8669         }
8670
8671         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8672         if (err < 0) {
8673                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8674                 return err;
8675         }
8676
8677         if (err == 0) {
8678                 GENL_SET_ERR_MSG(info,
8679                                  "Unexpected Radar indication for chandef/iftype");
8680                 return -EINVAL;
8681         }
8682
8683         /* Do not process this notification if radar is already detected
8684          * by kernel on this channel, and return success.
8685          */
8686         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8687                 return 0;
8688
8689         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8690
8691         cfg80211_sched_dfs_chan_update(rdev);
8692
8693         rdev->radar_chandef = chandef;
8694
8695         /* Propagate this notification to other radios as well */
8696         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8697
8698         return 0;
8699 }
8700
8701 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8702 {
8703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8704         struct net_device *dev = info->user_ptr[1];
8705         struct wireless_dev *wdev = dev->ieee80211_ptr;
8706         struct cfg80211_csa_settings params;
8707         /* csa_attrs is defined static to avoid waste of stack size - this
8708          * function is called under RTNL lock, so this should not be a problem.
8709          */
8710         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8711         int err;
8712         bool need_new_beacon = false;
8713         bool need_handle_dfs_flag = true;
8714         int len, i;
8715         u32 cs_count;
8716
8717         if (!rdev->ops->channel_switch ||
8718             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8719                 return -EOPNOTSUPP;
8720
8721         switch (dev->ieee80211_ptr->iftype) {
8722         case NL80211_IFTYPE_AP:
8723         case NL80211_IFTYPE_P2P_GO:
8724                 need_new_beacon = true;
8725                 /* For all modes except AP the handle_dfs flag needs to be
8726                  * supplied to tell the kernel that userspace will handle radar
8727                  * events when they happen. Otherwise a switch to a channel
8728                  * requiring DFS will be rejected.
8729                  */
8730                 need_handle_dfs_flag = false;
8731
8732                 /* useless if AP is not running */
8733                 if (!wdev->beacon_interval)
8734                         return -ENOTCONN;
8735                 break;
8736         case NL80211_IFTYPE_ADHOC:
8737                 if (!wdev->ssid_len)
8738                         return -ENOTCONN;
8739                 break;
8740         case NL80211_IFTYPE_MESH_POINT:
8741                 if (!wdev->mesh_id_len)
8742                         return -ENOTCONN;
8743                 break;
8744         default:
8745                 return -EOPNOTSUPP;
8746         }
8747
8748         memset(&params, 0, sizeof(params));
8749         params.beacon_csa.ftm_responder = -1;
8750
8751         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8752             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8753                 return -EINVAL;
8754
8755         /* only important for AP, IBSS and mesh create IEs internally */
8756         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8757                 return -EINVAL;
8758
8759         /* Even though the attribute is u32, the specification says
8760          * u8, so let's make sure we don't overflow.
8761          */
8762         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8763         if (cs_count > 255)
8764                 return -EINVAL;
8765
8766         params.count = cs_count;
8767
8768         if (!need_new_beacon)
8769                 goto skip_beacons;
8770
8771         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8772         if (err)
8773                 return err;
8774
8775         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8776                                           info->attrs[NL80211_ATTR_CSA_IES],
8777                                           nl80211_policy, info->extack);
8778         if (err)
8779                 return err;
8780
8781         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8782         if (err)
8783                 return err;
8784
8785         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8786                 return -EINVAL;
8787
8788         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8789         if (!len || (len % sizeof(u16)))
8790                 return -EINVAL;
8791
8792         params.n_counter_offsets_beacon = len / sizeof(u16);
8793         if (rdev->wiphy.max_num_csa_counters &&
8794             (params.n_counter_offsets_beacon >
8795              rdev->wiphy.max_num_csa_counters))
8796                 return -EINVAL;
8797
8798         params.counter_offsets_beacon =
8799                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8800
8801         /* sanity checks - counters should fit and be the same */
8802         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8803                 u16 offset = params.counter_offsets_beacon[i];
8804
8805                 if (offset >= params.beacon_csa.tail_len)
8806                         return -EINVAL;
8807
8808                 if (params.beacon_csa.tail[offset] != params.count)
8809                         return -EINVAL;
8810         }
8811
8812         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8813                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8814                 if (!len || (len % sizeof(u16)))
8815                         return -EINVAL;
8816
8817                 params.n_counter_offsets_presp = len / sizeof(u16);
8818                 if (rdev->wiphy.max_num_csa_counters &&
8819                     (params.n_counter_offsets_presp >
8820                      rdev->wiphy.max_num_csa_counters))
8821                         return -EINVAL;
8822
8823                 params.counter_offsets_presp =
8824                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8825
8826                 /* sanity checks - counters should fit and be the same */
8827                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8828                         u16 offset = params.counter_offsets_presp[i];
8829
8830                         if (offset >= params.beacon_csa.probe_resp_len)
8831                                 return -EINVAL;
8832
8833                         if (params.beacon_csa.probe_resp[offset] !=
8834                             params.count)
8835                                 return -EINVAL;
8836                 }
8837         }
8838
8839 skip_beacons:
8840         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8841         if (err)
8842                 return err;
8843
8844         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8845                                            wdev->iftype))
8846                 return -EINVAL;
8847
8848         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8849                                             &params.chandef,
8850                                             wdev->iftype);
8851         if (err < 0)
8852                 return err;
8853
8854         if (err > 0) {
8855                 params.radar_required = true;
8856                 if (need_handle_dfs_flag &&
8857                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8858                         return -EINVAL;
8859                 }
8860         }
8861
8862         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8863                 params.block_tx = true;
8864
8865         wdev_lock(wdev);
8866         err = rdev_channel_switch(rdev, dev, &params);
8867         wdev_unlock(wdev);
8868
8869         return err;
8870 }
8871
8872 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8873                             u32 seq, int flags,
8874                             struct cfg80211_registered_device *rdev,
8875                             struct wireless_dev *wdev,
8876                             struct cfg80211_internal_bss *intbss)
8877 {
8878         struct cfg80211_bss *res = &intbss->pub;
8879         const struct cfg80211_bss_ies *ies;
8880         void *hdr;
8881         struct nlattr *bss;
8882
8883         ASSERT_WDEV_LOCK(wdev);
8884
8885         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8886                              NL80211_CMD_NEW_SCAN_RESULTS);
8887         if (!hdr)
8888                 return -1;
8889
8890         genl_dump_check_consistent(cb, hdr);
8891
8892         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8893                 goto nla_put_failure;
8894         if (wdev->netdev &&
8895             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8896                 goto nla_put_failure;
8897         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8898                               NL80211_ATTR_PAD))
8899                 goto nla_put_failure;
8900
8901         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8902         if (!bss)
8903                 goto nla_put_failure;
8904         if ((!is_zero_ether_addr(res->bssid) &&
8905              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8906                 goto nla_put_failure;
8907
8908         rcu_read_lock();
8909         /* indicate whether we have probe response data or not */
8910         if (rcu_access_pointer(res->proberesp_ies) &&
8911             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8912                 goto fail_unlock_rcu;
8913
8914         /* this pointer prefers to be pointed to probe response data
8915          * but is always valid
8916          */
8917         ies = rcu_dereference(res->ies);
8918         if (ies) {
8919                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8920                                       NL80211_BSS_PAD))
8921                         goto fail_unlock_rcu;
8922                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8923                                         ies->len, ies->data))
8924                         goto fail_unlock_rcu;
8925         }
8926
8927         /* and this pointer is always (unless driver didn't know) beacon data */
8928         ies = rcu_dereference(res->beacon_ies);
8929         if (ies && ies->from_beacon) {
8930                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8931                                       NL80211_BSS_PAD))
8932                         goto fail_unlock_rcu;
8933                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8934                                         ies->len, ies->data))
8935                         goto fail_unlock_rcu;
8936         }
8937         rcu_read_unlock();
8938
8939         if (res->beacon_interval &&
8940             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8941                 goto nla_put_failure;
8942         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8943             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8944             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
8945                         res->channel->freq_offset) ||
8946             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8947             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8948                         jiffies_to_msecs(jiffies - intbss->ts)))
8949                 goto nla_put_failure;
8950
8951         if (intbss->parent_tsf &&
8952             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8953                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8954              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8955                      intbss->parent_bssid)))
8956                 goto nla_put_failure;
8957
8958         if (intbss->ts_boottime &&
8959             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8960                               intbss->ts_boottime, NL80211_BSS_PAD))
8961                 goto nla_put_failure;
8962
8963         if (!nl80211_put_signal(msg, intbss->pub.chains,
8964                                 intbss->pub.chain_signal,
8965                                 NL80211_BSS_CHAIN_SIGNAL))
8966                 goto nla_put_failure;
8967
8968         switch (rdev->wiphy.signal_type) {
8969         case CFG80211_SIGNAL_TYPE_MBM:
8970                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8971                         goto nla_put_failure;
8972                 break;
8973         case CFG80211_SIGNAL_TYPE_UNSPEC:
8974                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8975                         goto nla_put_failure;
8976                 break;
8977         default:
8978                 break;
8979         }
8980
8981         switch (wdev->iftype) {
8982         case NL80211_IFTYPE_P2P_CLIENT:
8983         case NL80211_IFTYPE_STATION:
8984                 if (intbss == wdev->current_bss &&
8985                     nla_put_u32(msg, NL80211_BSS_STATUS,
8986                                 NL80211_BSS_STATUS_ASSOCIATED))
8987                         goto nla_put_failure;
8988                 break;
8989         case NL80211_IFTYPE_ADHOC:
8990                 if (intbss == wdev->current_bss &&
8991                     nla_put_u32(msg, NL80211_BSS_STATUS,
8992                                 NL80211_BSS_STATUS_IBSS_JOINED))
8993                         goto nla_put_failure;
8994                 break;
8995         default:
8996                 break;
8997         }
8998
8999         nla_nest_end(msg, bss);
9000
9001         genlmsg_end(msg, hdr);
9002         return 0;
9003
9004  fail_unlock_rcu:
9005         rcu_read_unlock();
9006  nla_put_failure:
9007         genlmsg_cancel(msg, hdr);
9008         return -EMSGSIZE;
9009 }
9010
9011 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9012 {
9013         struct cfg80211_registered_device *rdev;
9014         struct cfg80211_internal_bss *scan;
9015         struct wireless_dev *wdev;
9016         int start = cb->args[2], idx = 0;
9017         int err;
9018
9019         rtnl_lock();
9020         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9021         if (err) {
9022                 rtnl_unlock();
9023                 return err;
9024         }
9025
9026         wdev_lock(wdev);
9027         spin_lock_bh(&rdev->bss_lock);
9028
9029         /*
9030          * dump_scan will be called multiple times to break up the scan results
9031          * into multiple messages.  It is unlikely that any more bss-es will be
9032          * expired after the first call, so only call only call this on the
9033          * first dump_scan invocation.
9034          */
9035         if (start == 0)
9036                 cfg80211_bss_expire(rdev);
9037
9038         cb->seq = rdev->bss_generation;
9039
9040         list_for_each_entry(scan, &rdev->bss_list, list) {
9041                 if (++idx <= start)
9042                         continue;
9043                 if (nl80211_send_bss(skb, cb,
9044                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9045                                 rdev, wdev, scan) < 0) {
9046                         idx--;
9047                         break;
9048                 }
9049         }
9050
9051         spin_unlock_bh(&rdev->bss_lock);
9052         wdev_unlock(wdev);
9053
9054         cb->args[2] = idx;
9055         rtnl_unlock();
9056
9057         return skb->len;
9058 }
9059
9060 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9061                                int flags, struct net_device *dev,
9062                                bool allow_radio_stats,
9063                                struct survey_info *survey)
9064 {
9065         void *hdr;
9066         struct nlattr *infoattr;
9067
9068         /* skip radio stats if userspace didn't request them */
9069         if (!survey->channel && !allow_radio_stats)
9070                 return 0;
9071
9072         hdr = nl80211hdr_put(msg, portid, seq, flags,
9073                              NL80211_CMD_NEW_SURVEY_RESULTS);
9074         if (!hdr)
9075                 return -ENOMEM;
9076
9077         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9078                 goto nla_put_failure;
9079
9080         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9081         if (!infoattr)
9082                 goto nla_put_failure;
9083
9084         if (survey->channel &&
9085             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9086                         survey->channel->center_freq))
9087                 goto nla_put_failure;
9088
9089         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9090             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9091                 goto nla_put_failure;
9092         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9093             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9094                 goto nla_put_failure;
9095         if ((survey->filled & SURVEY_INFO_TIME) &&
9096             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9097                         survey->time, NL80211_SURVEY_INFO_PAD))
9098                 goto nla_put_failure;
9099         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9100             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9101                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9102                 goto nla_put_failure;
9103         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9104             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9105                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9106                 goto nla_put_failure;
9107         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9108             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9109                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9110                 goto nla_put_failure;
9111         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9112             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9113                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9114                 goto nla_put_failure;
9115         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9116             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9117                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9118                 goto nla_put_failure;
9119         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9120             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9121                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9122                 goto nla_put_failure;
9123
9124         nla_nest_end(msg, infoattr);
9125
9126         genlmsg_end(msg, hdr);
9127         return 0;
9128
9129  nla_put_failure:
9130         genlmsg_cancel(msg, hdr);
9131         return -EMSGSIZE;
9132 }
9133
9134 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9135 {
9136         struct nlattr **attrbuf;
9137         struct survey_info survey;
9138         struct cfg80211_registered_device *rdev;
9139         struct wireless_dev *wdev;
9140         int survey_idx = cb->args[2];
9141         int res;
9142         bool radio_stats;
9143
9144         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9145         if (!attrbuf)
9146                 return -ENOMEM;
9147
9148         rtnl_lock();
9149         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9150         if (res)
9151                 goto out_err;
9152
9153         /* prepare_wdev_dump parsed the attributes */
9154         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9155
9156         if (!wdev->netdev) {
9157                 res = -EINVAL;
9158                 goto out_err;
9159         }
9160
9161         if (!rdev->ops->dump_survey) {
9162                 res = -EOPNOTSUPP;
9163                 goto out_err;
9164         }
9165
9166         while (1) {
9167                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9168                 if (res == -ENOENT)
9169                         break;
9170                 if (res)
9171                         goto out_err;
9172
9173                 /* don't send disabled channels, but do send non-channel data */
9174                 if (survey.channel &&
9175                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9176                         survey_idx++;
9177                         continue;
9178                 }
9179
9180                 if (nl80211_send_survey(skb,
9181                                 NETLINK_CB(cb->skb).portid,
9182                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9183                                 wdev->netdev, radio_stats, &survey) < 0)
9184                         goto out;
9185                 survey_idx++;
9186         }
9187
9188  out:
9189         cb->args[2] = survey_idx;
9190         res = skb->len;
9191  out_err:
9192         kfree(attrbuf);
9193         rtnl_unlock();
9194         return res;
9195 }
9196
9197 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9198 {
9199         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9200                                   NL80211_WPA_VERSION_2 |
9201                                   NL80211_WPA_VERSION_3));
9202 }
9203
9204 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9205 {
9206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9207         struct net_device *dev = info->user_ptr[1];
9208         struct ieee80211_channel *chan;
9209         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9210         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9211         enum nl80211_auth_type auth_type;
9212         struct key_parse key;
9213         bool local_state_change;
9214         u32 freq;
9215
9216         if (!info->attrs[NL80211_ATTR_MAC])
9217                 return -EINVAL;
9218
9219         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9220                 return -EINVAL;
9221
9222         if (!info->attrs[NL80211_ATTR_SSID])
9223                 return -EINVAL;
9224
9225         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9226                 return -EINVAL;
9227
9228         err = nl80211_parse_key(info, &key);
9229         if (err)
9230                 return err;
9231
9232         if (key.idx >= 0) {
9233                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9234                         return -EINVAL;
9235                 if (!key.p.key || !key.p.key_len)
9236                         return -EINVAL;
9237                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9238                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9239                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9240                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9241                         return -EINVAL;
9242                 if (key.idx > 3)
9243                         return -EINVAL;
9244         } else {
9245                 key.p.key_len = 0;
9246                 key.p.key = NULL;
9247         }
9248
9249         if (key.idx >= 0) {
9250                 int i;
9251                 bool ok = false;
9252
9253                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9254                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9255                                 ok = true;
9256                                 break;
9257                         }
9258                 }
9259                 if (!ok)
9260                         return -EINVAL;
9261         }
9262
9263         if (!rdev->ops->auth)
9264                 return -EOPNOTSUPP;
9265
9266         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9267             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9268                 return -EOPNOTSUPP;
9269
9270         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9271         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9272         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9273                 freq +=
9274                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9275
9276         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9277         if (!chan)
9278                 return -EINVAL;
9279
9280         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9281         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9282
9283         if (info->attrs[NL80211_ATTR_IE]) {
9284                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9285                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9286         }
9287
9288         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9289         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9290                 return -EINVAL;
9291
9292         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9293              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9294              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9295              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9296             !info->attrs[NL80211_ATTR_AUTH_DATA])
9297                 return -EINVAL;
9298
9299         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9300                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9301                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9302                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9303                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9304                         return -EINVAL;
9305                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9306                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9307                 /* need to include at least Auth Transaction and Status Code */
9308                 if (auth_data_len < 4)
9309                         return -EINVAL;
9310         }
9311
9312         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9313
9314         /*
9315          * Since we no longer track auth state, ignore
9316          * requests to only change local state.
9317          */
9318         if (local_state_change)
9319                 return 0;
9320
9321         wdev_lock(dev->ieee80211_ptr);
9322         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9323                                  ssid, ssid_len, ie, ie_len,
9324                                  key.p.key, key.p.key_len, key.idx,
9325                                  auth_data, auth_data_len);
9326         wdev_unlock(dev->ieee80211_ptr);
9327         return err;
9328 }
9329
9330 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9331                                      struct genl_info *info)
9332 {
9333         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9334                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9335                 return -EINVAL;
9336         }
9337
9338         if (!rdev->ops->tx_control_port ||
9339             !wiphy_ext_feature_isset(&rdev->wiphy,
9340                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9341                 return -EOPNOTSUPP;
9342
9343         return 0;
9344 }
9345
9346 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9347                                    struct genl_info *info,
9348                                    struct cfg80211_crypto_settings *settings,
9349                                    int cipher_limit)
9350 {
9351         memset(settings, 0, sizeof(*settings));
9352
9353         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9354
9355         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9356                 u16 proto;
9357
9358                 proto = nla_get_u16(
9359                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9360                 settings->control_port_ethertype = cpu_to_be16(proto);
9361                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9362                     proto != ETH_P_PAE)
9363                         return -EINVAL;
9364                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9365                         settings->control_port_no_encrypt = true;
9366         } else
9367                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9368
9369         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9370                 int r = validate_pae_over_nl80211(rdev, info);
9371
9372                 if (r < 0)
9373                         return r;
9374
9375                 settings->control_port_over_nl80211 = true;
9376
9377                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9378                         settings->control_port_no_preauth = true;
9379         }
9380
9381         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9382                 void *data;
9383                 int len, i;
9384
9385                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9386                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9387                 settings->n_ciphers_pairwise = len / sizeof(u32);
9388
9389                 if (len % sizeof(u32))
9390                         return -EINVAL;
9391
9392                 if (settings->n_ciphers_pairwise > cipher_limit)
9393                         return -EINVAL;
9394
9395                 memcpy(settings->ciphers_pairwise, data, len);
9396
9397                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9398                         if (!cfg80211_supported_cipher_suite(
9399                                         &rdev->wiphy,
9400                                         settings->ciphers_pairwise[i]))
9401                                 return -EINVAL;
9402         }
9403
9404         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9405                 settings->cipher_group =
9406                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9407                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9408                                                      settings->cipher_group))
9409                         return -EINVAL;
9410         }
9411
9412         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9413                 settings->wpa_versions =
9414                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9415                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9416                         return -EINVAL;
9417         }
9418
9419         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9420                 void *data;
9421                 int len;
9422
9423                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9424                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9425                 settings->n_akm_suites = len / sizeof(u32);
9426
9427                 if (len % sizeof(u32))
9428                         return -EINVAL;
9429
9430                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9431                         return -EINVAL;
9432
9433                 memcpy(settings->akm_suites, data, len);
9434         }
9435
9436         if (info->attrs[NL80211_ATTR_PMK]) {
9437                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9438                         return -EINVAL;
9439                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9440                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9441                         return -EINVAL;
9442                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9443         }
9444
9445         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9446                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9447                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9448                         return -EINVAL;
9449                 settings->sae_pwd =
9450                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9451                 settings->sae_pwd_len =
9452                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9453         }
9454
9455         return 0;
9456 }
9457
9458 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9459 {
9460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9461         struct net_device *dev = info->user_ptr[1];
9462         struct ieee80211_channel *chan;
9463         struct cfg80211_assoc_request req = {};
9464         const u8 *bssid, *ssid;
9465         int err, ssid_len = 0;
9466         u32 freq;
9467
9468         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9469             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9470                 return -EPERM;
9471
9472         if (!info->attrs[NL80211_ATTR_MAC] ||
9473             !info->attrs[NL80211_ATTR_SSID] ||
9474             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9475                 return -EINVAL;
9476
9477         if (!rdev->ops->assoc)
9478                 return -EOPNOTSUPP;
9479
9480         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9481             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9482                 return -EOPNOTSUPP;
9483
9484         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9485
9486         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9487         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9488                 freq +=
9489                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9490         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9491         if (!chan)
9492                 return -EINVAL;
9493
9494         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9495         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9496
9497         if (info->attrs[NL80211_ATTR_IE]) {
9498                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9499                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9500         }
9501
9502         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9503                 enum nl80211_mfp mfp =
9504                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9505                 if (mfp == NL80211_MFP_REQUIRED)
9506                         req.use_mfp = true;
9507                 else if (mfp != NL80211_MFP_NO)
9508                         return -EINVAL;
9509         }
9510
9511         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9512                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9513
9514         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9515                 req.flags |= ASSOC_REQ_DISABLE_HT;
9516
9517         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9518                 memcpy(&req.ht_capa_mask,
9519                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9520                        sizeof(req.ht_capa_mask));
9521
9522         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9523                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9524                         return -EINVAL;
9525                 memcpy(&req.ht_capa,
9526                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9527                        sizeof(req.ht_capa));
9528         }
9529
9530         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9531                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9532
9533         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9534                 memcpy(&req.vht_capa_mask,
9535                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9536                        sizeof(req.vht_capa_mask));
9537
9538         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9539                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9540                         return -EINVAL;
9541                 memcpy(&req.vht_capa,
9542                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9543                        sizeof(req.vht_capa));
9544         }
9545
9546         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9547                 if (!((rdev->wiphy.features &
9548                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9549                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9550                     !wiphy_ext_feature_isset(&rdev->wiphy,
9551                                              NL80211_EXT_FEATURE_RRM))
9552                         return -EINVAL;
9553                 req.flags |= ASSOC_REQ_USE_RRM;
9554         }
9555
9556         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9557                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9558                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9559                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9560                         return -EINVAL;
9561                 req.fils_nonces =
9562                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9563         }
9564
9565         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9566         if (!err) {
9567                 wdev_lock(dev->ieee80211_ptr);
9568
9569                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9570                                           ssid, ssid_len, &req);
9571
9572                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9573                         dev->ieee80211_ptr->conn_owner_nlportid =
9574                                 info->snd_portid;
9575                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9576                                bssid, ETH_ALEN);
9577                 }
9578
9579                 wdev_unlock(dev->ieee80211_ptr);
9580         }
9581
9582         return err;
9583 }
9584
9585 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9586 {
9587         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9588         struct net_device *dev = info->user_ptr[1];
9589         const u8 *ie = NULL, *bssid;
9590         int ie_len = 0, err;
9591         u16 reason_code;
9592         bool local_state_change;
9593
9594         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9595             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9596                 return -EPERM;
9597
9598         if (!info->attrs[NL80211_ATTR_MAC])
9599                 return -EINVAL;
9600
9601         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9602                 return -EINVAL;
9603
9604         if (!rdev->ops->deauth)
9605                 return -EOPNOTSUPP;
9606
9607         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9608             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9609                 return -EOPNOTSUPP;
9610
9611         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9612
9613         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9614         if (reason_code == 0) {
9615                 /* Reason Code 0 is reserved */
9616                 return -EINVAL;
9617         }
9618
9619         if (info->attrs[NL80211_ATTR_IE]) {
9620                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9621                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9622         }
9623
9624         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9625
9626         wdev_lock(dev->ieee80211_ptr);
9627         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9628                                    local_state_change);
9629         wdev_unlock(dev->ieee80211_ptr);
9630         return err;
9631 }
9632
9633 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9634 {
9635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9636         struct net_device *dev = info->user_ptr[1];
9637         const u8 *ie = NULL, *bssid;
9638         int ie_len = 0, err;
9639         u16 reason_code;
9640         bool local_state_change;
9641
9642         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9643             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9644                 return -EPERM;
9645
9646         if (!info->attrs[NL80211_ATTR_MAC])
9647                 return -EINVAL;
9648
9649         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9650                 return -EINVAL;
9651
9652         if (!rdev->ops->disassoc)
9653                 return -EOPNOTSUPP;
9654
9655         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9656             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9657                 return -EOPNOTSUPP;
9658
9659         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9660
9661         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9662         if (reason_code == 0) {
9663                 /* Reason Code 0 is reserved */
9664                 return -EINVAL;
9665         }
9666
9667         if (info->attrs[NL80211_ATTR_IE]) {
9668                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9669                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9670         }
9671
9672         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9673
9674         wdev_lock(dev->ieee80211_ptr);
9675         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9676                                      local_state_change);
9677         wdev_unlock(dev->ieee80211_ptr);
9678         return err;
9679 }
9680
9681 static bool
9682 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9683                          int mcast_rate[NUM_NL80211_BANDS],
9684                          int rateval)
9685 {
9686         struct wiphy *wiphy = &rdev->wiphy;
9687         bool found = false;
9688         int band, i;
9689
9690         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9691                 struct ieee80211_supported_band *sband;
9692
9693                 sband = wiphy->bands[band];
9694                 if (!sband)
9695                         continue;
9696
9697                 for (i = 0; i < sband->n_bitrates; i++) {
9698                         if (sband->bitrates[i].bitrate == rateval) {
9699                                 mcast_rate[band] = i + 1;
9700                                 found = true;
9701                                 break;
9702                         }
9703                 }
9704         }
9705
9706         return found;
9707 }
9708
9709 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9710 {
9711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9712         struct net_device *dev = info->user_ptr[1];
9713         struct cfg80211_ibss_params ibss;
9714         struct wiphy *wiphy;
9715         struct cfg80211_cached_keys *connkeys = NULL;
9716         int err;
9717
9718         memset(&ibss, 0, sizeof(ibss));
9719
9720         if (!info->attrs[NL80211_ATTR_SSID] ||
9721             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9722                 return -EINVAL;
9723
9724         ibss.beacon_interval = 100;
9725
9726         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9727                 ibss.beacon_interval =
9728                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9729
9730         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9731                                            ibss.beacon_interval);
9732         if (err)
9733                 return err;
9734
9735         if (!rdev->ops->join_ibss)
9736                 return -EOPNOTSUPP;
9737
9738         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9739                 return -EOPNOTSUPP;
9740
9741         wiphy = &rdev->wiphy;
9742
9743         if (info->attrs[NL80211_ATTR_MAC]) {
9744                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9745
9746                 if (!is_valid_ether_addr(ibss.bssid))
9747                         return -EINVAL;
9748         }
9749         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9750         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9751
9752         if (info->attrs[NL80211_ATTR_IE]) {
9753                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9754                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9755         }
9756
9757         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9758         if (err)
9759                 return err;
9760
9761         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9762                                      NL80211_IFTYPE_ADHOC))
9763                 return -EINVAL;
9764
9765         switch (ibss.chandef.width) {
9766         case NL80211_CHAN_WIDTH_5:
9767         case NL80211_CHAN_WIDTH_10:
9768         case NL80211_CHAN_WIDTH_20_NOHT:
9769                 break;
9770         case NL80211_CHAN_WIDTH_20:
9771         case NL80211_CHAN_WIDTH_40:
9772                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9773                         return -EINVAL;
9774                 break;
9775         case NL80211_CHAN_WIDTH_80:
9776         case NL80211_CHAN_WIDTH_80P80:
9777         case NL80211_CHAN_WIDTH_160:
9778                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9779                         return -EINVAL;
9780                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9781                                              NL80211_EXT_FEATURE_VHT_IBSS))
9782                         return -EINVAL;
9783                 break;
9784         default:
9785                 return -EINVAL;
9786         }
9787
9788         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9789         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9790
9791         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9792                 u8 *rates =
9793                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9794                 int n_rates =
9795                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9796                 struct ieee80211_supported_band *sband =
9797                         wiphy->bands[ibss.chandef.chan->band];
9798
9799                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9800                                              &ibss.basic_rates);
9801                 if (err)
9802                         return err;
9803         }
9804
9805         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9806                 memcpy(&ibss.ht_capa_mask,
9807                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9808                        sizeof(ibss.ht_capa_mask));
9809
9810         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9811                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9812                         return -EINVAL;
9813                 memcpy(&ibss.ht_capa,
9814                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9815                        sizeof(ibss.ht_capa));
9816         }
9817
9818         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9819             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9820                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9821                 return -EINVAL;
9822
9823         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9824                 bool no_ht = false;
9825
9826                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9827                 if (IS_ERR(connkeys))
9828                         return PTR_ERR(connkeys);
9829
9830                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9831                     no_ht) {
9832                         kzfree(connkeys);
9833                         return -EINVAL;
9834                 }
9835         }
9836
9837         ibss.control_port =
9838                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9839
9840         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9841                 int r = validate_pae_over_nl80211(rdev, info);
9842
9843                 if (r < 0) {
9844                         kzfree(connkeys);
9845                         return r;
9846                 }
9847
9848                 ibss.control_port_over_nl80211 = true;
9849         }
9850
9851         ibss.userspace_handles_dfs =
9852                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9853
9854         wdev_lock(dev->ieee80211_ptr);
9855         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9856         if (err)
9857                 kzfree(connkeys);
9858         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9859                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9860         wdev_unlock(dev->ieee80211_ptr);
9861
9862         return err;
9863 }
9864
9865 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9866 {
9867         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9868         struct net_device *dev = info->user_ptr[1];
9869
9870         if (!rdev->ops->leave_ibss)
9871                 return -EOPNOTSUPP;
9872
9873         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9874                 return -EOPNOTSUPP;
9875
9876         return cfg80211_leave_ibss(rdev, dev, false);
9877 }
9878
9879 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9880 {
9881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9882         struct net_device *dev = info->user_ptr[1];
9883         int mcast_rate[NUM_NL80211_BANDS];
9884         u32 nla_rate;
9885         int err;
9886
9887         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9888             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9889             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9890                 return -EOPNOTSUPP;
9891
9892         if (!rdev->ops->set_mcast_rate)
9893                 return -EOPNOTSUPP;
9894
9895         memset(mcast_rate, 0, sizeof(mcast_rate));
9896
9897         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9898                 return -EINVAL;
9899
9900         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9901         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9902                 return -EINVAL;
9903
9904         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9905
9906         return err;
9907 }
9908
9909 static struct sk_buff *
9910 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9911                             struct wireless_dev *wdev, int approxlen,
9912                             u32 portid, u32 seq, enum nl80211_commands cmd,
9913                             enum nl80211_attrs attr,
9914                             const struct nl80211_vendor_cmd_info *info,
9915                             gfp_t gfp)
9916 {
9917         struct sk_buff *skb;
9918         void *hdr;
9919         struct nlattr *data;
9920
9921         skb = nlmsg_new(approxlen + 100, gfp);
9922         if (!skb)
9923                 return NULL;
9924
9925         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9926         if (!hdr) {
9927                 kfree_skb(skb);
9928                 return NULL;
9929         }
9930
9931         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9932                 goto nla_put_failure;
9933
9934         if (info) {
9935                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9936                                 info->vendor_id))
9937                         goto nla_put_failure;
9938                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9939                                 info->subcmd))
9940                         goto nla_put_failure;
9941         }
9942
9943         if (wdev) {
9944                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9945                                       wdev_id(wdev), NL80211_ATTR_PAD))
9946                         goto nla_put_failure;
9947                 if (wdev->netdev &&
9948                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9949                                 wdev->netdev->ifindex))
9950                         goto nla_put_failure;
9951         }
9952
9953         data = nla_nest_start_noflag(skb, attr);
9954         if (!data)
9955                 goto nla_put_failure;
9956
9957         ((void **)skb->cb)[0] = rdev;
9958         ((void **)skb->cb)[1] = hdr;
9959         ((void **)skb->cb)[2] = data;
9960
9961         return skb;
9962
9963  nla_put_failure:
9964         kfree_skb(skb);
9965         return NULL;
9966 }
9967
9968 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9969                                            struct wireless_dev *wdev,
9970                                            enum nl80211_commands cmd,
9971                                            enum nl80211_attrs attr,
9972                                            unsigned int portid,
9973                                            int vendor_event_idx,
9974                                            int approxlen, gfp_t gfp)
9975 {
9976         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9977         const struct nl80211_vendor_cmd_info *info;
9978
9979         switch (cmd) {
9980         case NL80211_CMD_TESTMODE:
9981                 if (WARN_ON(vendor_event_idx != -1))
9982                         return NULL;
9983                 info = NULL;
9984                 break;
9985         case NL80211_CMD_VENDOR:
9986                 if (WARN_ON(vendor_event_idx < 0 ||
9987                             vendor_event_idx >= wiphy->n_vendor_events))
9988                         return NULL;
9989                 info = &wiphy->vendor_events[vendor_event_idx];
9990                 break;
9991         default:
9992                 WARN_ON(1);
9993                 return NULL;
9994         }
9995
9996         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9997                                            cmd, attr, info, gfp);
9998 }
9999 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10000
10001 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10002 {
10003         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10004         void *hdr = ((void **)skb->cb)[1];
10005         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10006         struct nlattr *data = ((void **)skb->cb)[2];
10007         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10008
10009         /* clear CB data for netlink core to own from now on */
10010         memset(skb->cb, 0, sizeof(skb->cb));
10011
10012         nla_nest_end(skb, data);
10013         genlmsg_end(skb, hdr);
10014
10015         if (nlhdr->nlmsg_pid) {
10016                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10017                                 nlhdr->nlmsg_pid);
10018         } else {
10019                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10020                         mcgrp = NL80211_MCGRP_VENDOR;
10021
10022                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10023                                         skb, 0, mcgrp, gfp);
10024         }
10025 }
10026 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10027
10028 #ifdef CONFIG_NL80211_TESTMODE
10029 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10030 {
10031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10032         struct wireless_dev *wdev =
10033                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10034         int err;
10035
10036         if (!rdev->ops->testmode_cmd)
10037                 return -EOPNOTSUPP;
10038
10039         if (IS_ERR(wdev)) {
10040                 err = PTR_ERR(wdev);
10041                 if (err != -EINVAL)
10042                         return err;
10043                 wdev = NULL;
10044         } else if (wdev->wiphy != &rdev->wiphy) {
10045                 return -EINVAL;
10046         }
10047
10048         if (!info->attrs[NL80211_ATTR_TESTDATA])
10049                 return -EINVAL;
10050
10051         rdev->cur_cmd_info = info;
10052         err = rdev_testmode_cmd(rdev, wdev,
10053                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10054                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10055         rdev->cur_cmd_info = NULL;
10056
10057         return err;
10058 }
10059
10060 static int nl80211_testmode_dump(struct sk_buff *skb,
10061                                  struct netlink_callback *cb)
10062 {
10063         struct cfg80211_registered_device *rdev;
10064         struct nlattr **attrbuf = NULL;
10065         int err;
10066         long phy_idx;
10067         void *data = NULL;
10068         int data_len = 0;
10069
10070         rtnl_lock();
10071
10072         if (cb->args[0]) {
10073                 /*
10074                  * 0 is a valid index, but not valid for args[0],
10075                  * so we need to offset by 1.
10076                  */
10077                 phy_idx = cb->args[0] - 1;
10078
10079                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10080                 if (!rdev) {
10081                         err = -ENOENT;
10082                         goto out_err;
10083                 }
10084         } else {
10085                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10086                                   GFP_KERNEL);
10087                 if (!attrbuf) {
10088                         err = -ENOMEM;
10089                         goto out_err;
10090                 }
10091
10092                 err = nlmsg_parse_deprecated(cb->nlh,
10093                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10094                                              attrbuf, nl80211_fam.maxattr,
10095                                              nl80211_policy, NULL);
10096                 if (err)
10097                         goto out_err;
10098
10099                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10100                 if (IS_ERR(rdev)) {
10101                         err = PTR_ERR(rdev);
10102                         goto out_err;
10103                 }
10104                 phy_idx = rdev->wiphy_idx;
10105
10106                 if (attrbuf[NL80211_ATTR_TESTDATA])
10107                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10108         }
10109
10110         if (cb->args[1]) {
10111                 data = nla_data((void *)cb->args[1]);
10112                 data_len = nla_len((void *)cb->args[1]);
10113         }
10114
10115         if (!rdev->ops->testmode_dump) {
10116                 err = -EOPNOTSUPP;
10117                 goto out_err;
10118         }
10119
10120         while (1) {
10121                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10122                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10123                                            NL80211_CMD_TESTMODE);
10124                 struct nlattr *tmdata;
10125
10126                 if (!hdr)
10127                         break;
10128
10129                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10130                         genlmsg_cancel(skb, hdr);
10131                         break;
10132                 }
10133
10134                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10135                 if (!tmdata) {
10136                         genlmsg_cancel(skb, hdr);
10137                         break;
10138                 }
10139                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10140                 nla_nest_end(skb, tmdata);
10141
10142                 if (err == -ENOBUFS || err == -ENOENT) {
10143                         genlmsg_cancel(skb, hdr);
10144                         break;
10145                 } else if (err) {
10146                         genlmsg_cancel(skb, hdr);
10147                         goto out_err;
10148                 }
10149
10150                 genlmsg_end(skb, hdr);
10151         }
10152
10153         err = skb->len;
10154         /* see above */
10155         cb->args[0] = phy_idx + 1;
10156  out_err:
10157         kfree(attrbuf);
10158         rtnl_unlock();
10159         return err;
10160 }
10161 #endif
10162
10163 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10164 {
10165         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10166         struct net_device *dev = info->user_ptr[1];
10167         struct cfg80211_connect_params connect;
10168         struct wiphy *wiphy;
10169         struct cfg80211_cached_keys *connkeys = NULL;
10170         u32 freq = 0;
10171         int err;
10172
10173         memset(&connect, 0, sizeof(connect));
10174
10175         if (!info->attrs[NL80211_ATTR_SSID] ||
10176             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10177                 return -EINVAL;
10178
10179         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10180                 connect.auth_type =
10181                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10182                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10183                                              NL80211_CMD_CONNECT))
10184                         return -EINVAL;
10185         } else
10186                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10187
10188         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10189
10190         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10191             !wiphy_ext_feature_isset(&rdev->wiphy,
10192                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10193                 return -EINVAL;
10194         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10195
10196         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10197                                       NL80211_MAX_NR_CIPHER_SUITES);
10198         if (err)
10199                 return err;
10200
10201         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10202             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10203                 return -EOPNOTSUPP;
10204
10205         wiphy = &rdev->wiphy;
10206
10207         connect.bg_scan_period = -1;
10208         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10209                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10210                 connect.bg_scan_period =
10211                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10212         }
10213
10214         if (info->attrs[NL80211_ATTR_MAC])
10215                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10216         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10217                 connect.bssid_hint =
10218                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10219         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10220         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10221
10222         if (info->attrs[NL80211_ATTR_IE]) {
10223                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10224                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10225         }
10226
10227         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10228                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10229                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10230                     !wiphy_ext_feature_isset(&rdev->wiphy,
10231                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10232                         return -EOPNOTSUPP;
10233         } else {
10234                 connect.mfp = NL80211_MFP_NO;
10235         }
10236
10237         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10238                 connect.prev_bssid =
10239                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10240
10241         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10242                 freq = MHZ_TO_KHZ(nla_get_u32(
10243                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10244         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10245                 freq +=
10246                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10247
10248         if (freq) {
10249                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10250                 if (!connect.channel)
10251                         return -EINVAL;
10252         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10253                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10254                 freq = MHZ_TO_KHZ(freq);
10255                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10256                 if (!connect.channel_hint)
10257                         return -EINVAL;
10258         }
10259
10260         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10261                 connect.edmg.channels =
10262                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10263
10264                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10265                         connect.edmg.bw_config =
10266                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10267         }
10268
10269         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10270                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10271                 if (IS_ERR(connkeys))
10272                         return PTR_ERR(connkeys);
10273         }
10274
10275         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10276                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10277
10278         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10279                 memcpy(&connect.ht_capa_mask,
10280                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10281                        sizeof(connect.ht_capa_mask));
10282
10283         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10284                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10285                         kzfree(connkeys);
10286                         return -EINVAL;
10287                 }
10288                 memcpy(&connect.ht_capa,
10289                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10290                        sizeof(connect.ht_capa));
10291         }
10292
10293         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10294                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10295
10296         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10297                 memcpy(&connect.vht_capa_mask,
10298                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10299                        sizeof(connect.vht_capa_mask));
10300
10301         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10302                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10303                         kzfree(connkeys);
10304                         return -EINVAL;
10305                 }
10306                 memcpy(&connect.vht_capa,
10307                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10308                        sizeof(connect.vht_capa));
10309         }
10310
10311         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10312                 if (!((rdev->wiphy.features &
10313                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10314                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10315                     !wiphy_ext_feature_isset(&rdev->wiphy,
10316                                              NL80211_EXT_FEATURE_RRM)) {
10317                         kzfree(connkeys);
10318                         return -EINVAL;
10319                 }
10320                 connect.flags |= ASSOC_REQ_USE_RRM;
10321         }
10322
10323         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10324         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10325                 kzfree(connkeys);
10326                 return -EOPNOTSUPP;
10327         }
10328
10329         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10330                 /* bss selection makes no sense if bssid is set */
10331                 if (connect.bssid) {
10332                         kzfree(connkeys);
10333                         return -EINVAL;
10334                 }
10335
10336                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10337                                        wiphy, &connect.bss_select);
10338                 if (err) {
10339                         kzfree(connkeys);
10340                         return err;
10341                 }
10342         }
10343
10344         if (wiphy_ext_feature_isset(&rdev->wiphy,
10345                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10346             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10347             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10348             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10349             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10350                 connect.fils_erp_username =
10351                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10352                 connect.fils_erp_username_len =
10353                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10354                 connect.fils_erp_realm =
10355                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10356                 connect.fils_erp_realm_len =
10357                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10358                 connect.fils_erp_next_seq_num =
10359                         nla_get_u16(
10360                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10361                 connect.fils_erp_rrk =
10362                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10363                 connect.fils_erp_rrk_len =
10364                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10365         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10366                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10367                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10368                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10369                 kzfree(connkeys);
10370                 return -EINVAL;
10371         }
10372
10373         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10374                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10375                         kzfree(connkeys);
10376                         GENL_SET_ERR_MSG(info,
10377                                          "external auth requires connection ownership");
10378                         return -EINVAL;
10379                 }
10380                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10381         }
10382
10383         wdev_lock(dev->ieee80211_ptr);
10384
10385         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10386                                connect.prev_bssid);
10387         if (err)
10388                 kzfree(connkeys);
10389
10390         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10391                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10392                 if (connect.bssid)
10393                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10394                                connect.bssid, ETH_ALEN);
10395                 else
10396                         memset(dev->ieee80211_ptr->disconnect_bssid,
10397                                0, ETH_ALEN);
10398         }
10399
10400         wdev_unlock(dev->ieee80211_ptr);
10401
10402         return err;
10403 }
10404
10405 static int nl80211_update_connect_params(struct sk_buff *skb,
10406                                          struct genl_info *info)
10407 {
10408         struct cfg80211_connect_params connect = {};
10409         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10410         struct net_device *dev = info->user_ptr[1];
10411         struct wireless_dev *wdev = dev->ieee80211_ptr;
10412         bool fils_sk_offload;
10413         u32 auth_type;
10414         u32 changed = 0;
10415         int ret;
10416
10417         if (!rdev->ops->update_connect_params)
10418                 return -EOPNOTSUPP;
10419
10420         if (info->attrs[NL80211_ATTR_IE]) {
10421                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10422                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10423                 changed |= UPDATE_ASSOC_IES;
10424         }
10425
10426         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10427                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10428
10429         /*
10430          * when driver supports fils-sk offload all attributes must be
10431          * provided. So the else covers "fils-sk-not-all" and
10432          * "no-fils-sk-any".
10433          */
10434         if (fils_sk_offload &&
10435             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10436             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10437             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10438             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10439                 connect.fils_erp_username =
10440                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10441                 connect.fils_erp_username_len =
10442                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10443                 connect.fils_erp_realm =
10444                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10445                 connect.fils_erp_realm_len =
10446                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10447                 connect.fils_erp_next_seq_num =
10448                         nla_get_u16(
10449                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10450                 connect.fils_erp_rrk =
10451                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10452                 connect.fils_erp_rrk_len =
10453                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10454                 changed |= UPDATE_FILS_ERP_INFO;
10455         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10456                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10457                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10458                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10459                 return -EINVAL;
10460         }
10461
10462         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10463                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10464                 if (!nl80211_valid_auth_type(rdev, auth_type,
10465                                              NL80211_CMD_CONNECT))
10466                         return -EINVAL;
10467
10468                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10469                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10470                         return -EINVAL;
10471
10472                 connect.auth_type = auth_type;
10473                 changed |= UPDATE_AUTH_TYPE;
10474         }
10475
10476         wdev_lock(dev->ieee80211_ptr);
10477         if (!wdev->current_bss)
10478                 ret = -ENOLINK;
10479         else
10480                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10481         wdev_unlock(dev->ieee80211_ptr);
10482
10483         return ret;
10484 }
10485
10486 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10487 {
10488         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10489         struct net_device *dev = info->user_ptr[1];
10490         u16 reason;
10491         int ret;
10492
10493         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10494             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10495                 return -EPERM;
10496
10497         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10498                 reason = WLAN_REASON_DEAUTH_LEAVING;
10499         else
10500                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10501
10502         if (reason == 0)
10503                 return -EINVAL;
10504
10505         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10506             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10507                 return -EOPNOTSUPP;
10508
10509         wdev_lock(dev->ieee80211_ptr);
10510         ret = cfg80211_disconnect(rdev, dev, reason, true);
10511         wdev_unlock(dev->ieee80211_ptr);
10512         return ret;
10513 }
10514
10515 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10516 {
10517         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10518         struct net *net;
10519         int err;
10520
10521         if (info->attrs[NL80211_ATTR_PID]) {
10522                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10523
10524                 net = get_net_ns_by_pid(pid);
10525         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10526                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10527
10528                 net = get_net_ns_by_fd(fd);
10529         } else {
10530                 return -EINVAL;
10531         }
10532
10533         if (IS_ERR(net))
10534                 return PTR_ERR(net);
10535
10536         err = 0;
10537
10538         /* check if anything to do */
10539         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10540                 err = cfg80211_switch_netns(rdev, net);
10541
10542         put_net(net);
10543         return err;
10544 }
10545
10546 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10547 {
10548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10549         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10550                         struct cfg80211_pmksa *pmksa) = NULL;
10551         struct net_device *dev = info->user_ptr[1];
10552         struct cfg80211_pmksa pmksa;
10553
10554         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10555
10556         if (!info->attrs[NL80211_ATTR_PMKID])
10557                 return -EINVAL;
10558
10559         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10560
10561         if (info->attrs[NL80211_ATTR_MAC]) {
10562                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10563         } else if (info->attrs[NL80211_ATTR_SSID] &&
10564                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10565                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10566                     info->attrs[NL80211_ATTR_PMK])) {
10567                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10568                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10569                 pmksa.cache_id =
10570                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10571         } else {
10572                 return -EINVAL;
10573         }
10574         if (info->attrs[NL80211_ATTR_PMK]) {
10575                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10576                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10577         }
10578
10579         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10580                 pmksa.pmk_lifetime =
10581                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10582
10583         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10584                 pmksa.pmk_reauth_threshold =
10585                         nla_get_u8(
10586                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10587
10588         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10589             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10590             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10591               wiphy_ext_feature_isset(&rdev->wiphy,
10592                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10593                 return -EOPNOTSUPP;
10594
10595         switch (info->genlhdr->cmd) {
10596         case NL80211_CMD_SET_PMKSA:
10597                 rdev_ops = rdev->ops->set_pmksa;
10598                 break;
10599         case NL80211_CMD_DEL_PMKSA:
10600                 rdev_ops = rdev->ops->del_pmksa;
10601                 break;
10602         default:
10603                 WARN_ON(1);
10604                 break;
10605         }
10606
10607         if (!rdev_ops)
10608                 return -EOPNOTSUPP;
10609
10610         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10611 }
10612
10613 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10614 {
10615         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10616         struct net_device *dev = info->user_ptr[1];
10617
10618         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10619             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10620                 return -EOPNOTSUPP;
10621
10622         if (!rdev->ops->flush_pmksa)
10623                 return -EOPNOTSUPP;
10624
10625         return rdev_flush_pmksa(rdev, dev);
10626 }
10627
10628 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10629 {
10630         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10631         struct net_device *dev = info->user_ptr[1];
10632         u8 action_code, dialog_token;
10633         u32 peer_capability = 0;
10634         u16 status_code;
10635         u8 *peer;
10636         bool initiator;
10637
10638         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10639             !rdev->ops->tdls_mgmt)
10640                 return -EOPNOTSUPP;
10641
10642         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10643             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10644             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10645             !info->attrs[NL80211_ATTR_IE] ||
10646             !info->attrs[NL80211_ATTR_MAC])
10647                 return -EINVAL;
10648
10649         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10650         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10651         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10652         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10653         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10654         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10655                 peer_capability =
10656                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10657
10658         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10659                               dialog_token, status_code, peer_capability,
10660                               initiator,
10661                               nla_data(info->attrs[NL80211_ATTR_IE]),
10662                               nla_len(info->attrs[NL80211_ATTR_IE]));
10663 }
10664
10665 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10666 {
10667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10668         struct net_device *dev = info->user_ptr[1];
10669         enum nl80211_tdls_operation operation;
10670         u8 *peer;
10671
10672         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10673             !rdev->ops->tdls_oper)
10674                 return -EOPNOTSUPP;
10675
10676         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10677             !info->attrs[NL80211_ATTR_MAC])
10678                 return -EINVAL;
10679
10680         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10681         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10682
10683         return rdev_tdls_oper(rdev, dev, peer, operation);
10684 }
10685
10686 static int nl80211_remain_on_channel(struct sk_buff *skb,
10687                                      struct genl_info *info)
10688 {
10689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10690         struct wireless_dev *wdev = info->user_ptr[1];
10691         struct cfg80211_chan_def chandef;
10692         const struct cfg80211_chan_def *compat_chandef;
10693         struct sk_buff *msg;
10694         void *hdr;
10695         u64 cookie;
10696         u32 duration;
10697         int err;
10698
10699         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10700             !info->attrs[NL80211_ATTR_DURATION])
10701                 return -EINVAL;
10702
10703         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10704
10705         if (!rdev->ops->remain_on_channel ||
10706             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10707                 return -EOPNOTSUPP;
10708
10709         /*
10710          * We should be on that channel for at least a minimum amount of
10711          * time (10ms) but no longer than the driver supports.
10712          */
10713         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10714             duration > rdev->wiphy.max_remain_on_channel_duration)
10715                 return -EINVAL;
10716
10717         err = nl80211_parse_chandef(rdev, info, &chandef);
10718         if (err)
10719                 return err;
10720
10721         wdev_lock(wdev);
10722         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10723             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10724                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10725                                                              &chandef);
10726                 if (compat_chandef != &chandef) {
10727                         wdev_unlock(wdev);
10728                         return -EBUSY;
10729                 }
10730         }
10731         wdev_unlock(wdev);
10732
10733         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10734         if (!msg)
10735                 return -ENOMEM;
10736
10737         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10738                              NL80211_CMD_REMAIN_ON_CHANNEL);
10739         if (!hdr) {
10740                 err = -ENOBUFS;
10741                 goto free_msg;
10742         }
10743
10744         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10745                                      duration, &cookie);
10746
10747         if (err)
10748                 goto free_msg;
10749
10750         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10751                               NL80211_ATTR_PAD))
10752                 goto nla_put_failure;
10753
10754         genlmsg_end(msg, hdr);
10755
10756         return genlmsg_reply(msg, info);
10757
10758  nla_put_failure:
10759         err = -ENOBUFS;
10760  free_msg:
10761         nlmsg_free(msg);
10762         return err;
10763 }
10764
10765 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10766                                             struct genl_info *info)
10767 {
10768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10769         struct wireless_dev *wdev = info->user_ptr[1];
10770         u64 cookie;
10771
10772         if (!info->attrs[NL80211_ATTR_COOKIE])
10773                 return -EINVAL;
10774
10775         if (!rdev->ops->cancel_remain_on_channel)
10776                 return -EOPNOTSUPP;
10777
10778         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10779
10780         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10781 }
10782
10783 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10784                                        struct genl_info *info)
10785 {
10786         struct cfg80211_bitrate_mask mask;
10787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10788         struct net_device *dev = info->user_ptr[1];
10789         int err;
10790
10791         if (!rdev->ops->set_bitrate_mask)
10792                 return -EOPNOTSUPP;
10793
10794         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
10795                                             NL80211_ATTR_TX_RATES, &mask);
10796         if (err)
10797                 return err;
10798
10799         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10800 }
10801
10802 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10803 {
10804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10805         struct wireless_dev *wdev = info->user_ptr[1];
10806         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10807
10808         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10809                 return -EINVAL;
10810
10811         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10812                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10813
10814         switch (wdev->iftype) {
10815         case NL80211_IFTYPE_STATION:
10816         case NL80211_IFTYPE_ADHOC:
10817         case NL80211_IFTYPE_P2P_CLIENT:
10818         case NL80211_IFTYPE_AP:
10819         case NL80211_IFTYPE_AP_VLAN:
10820         case NL80211_IFTYPE_MESH_POINT:
10821         case NL80211_IFTYPE_P2P_GO:
10822         case NL80211_IFTYPE_P2P_DEVICE:
10823                 break;
10824         case NL80211_IFTYPE_NAN:
10825         default:
10826                 return -EOPNOTSUPP;
10827         }
10828
10829         /* not much point in registering if we can't reply */
10830         if (!rdev->ops->mgmt_tx)
10831                 return -EOPNOTSUPP;
10832
10833         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
10834             !wiphy_ext_feature_isset(&rdev->wiphy,
10835                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
10836                 GENL_SET_ERR_MSG(info,
10837                                  "multicast RX registrations are not supported");
10838                 return -EOPNOTSUPP;
10839         }
10840
10841         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10842                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10843                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10844                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
10845                                            info->extack);
10846 }
10847
10848 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10849 {
10850         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10851         struct wireless_dev *wdev = info->user_ptr[1];
10852         struct cfg80211_chan_def chandef;
10853         int err;
10854         void *hdr = NULL;
10855         u64 cookie;
10856         struct sk_buff *msg = NULL;
10857         struct cfg80211_mgmt_tx_params params = {
10858                 .dont_wait_for_ack =
10859                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10860         };
10861
10862         if (!info->attrs[NL80211_ATTR_FRAME])
10863                 return -EINVAL;
10864
10865         if (!rdev->ops->mgmt_tx)
10866                 return -EOPNOTSUPP;
10867
10868         switch (wdev->iftype) {
10869         case NL80211_IFTYPE_P2P_DEVICE:
10870                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10871                         return -EINVAL;
10872         case NL80211_IFTYPE_STATION:
10873         case NL80211_IFTYPE_ADHOC:
10874         case NL80211_IFTYPE_P2P_CLIENT:
10875         case NL80211_IFTYPE_AP:
10876         case NL80211_IFTYPE_AP_VLAN:
10877         case NL80211_IFTYPE_MESH_POINT:
10878         case NL80211_IFTYPE_P2P_GO:
10879                 break;
10880         case NL80211_IFTYPE_NAN:
10881         default:
10882                 return -EOPNOTSUPP;
10883         }
10884
10885         if (info->attrs[NL80211_ATTR_DURATION]) {
10886                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10887                         return -EINVAL;
10888                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10889
10890                 /*
10891                  * We should wait on the channel for at least a minimum amount
10892                  * of time (10ms) but no longer than the driver supports.
10893                  */
10894                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10895                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10896                         return -EINVAL;
10897         }
10898
10899         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10900
10901         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10902                 return -EINVAL;
10903
10904         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10905
10906         /* get the channel if any has been specified, otherwise pass NULL to
10907          * the driver. The latter will use the current one
10908          */
10909         chandef.chan = NULL;
10910         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10911                 err = nl80211_parse_chandef(rdev, info, &chandef);
10912                 if (err)
10913                         return err;
10914         }
10915
10916         if (!chandef.chan && params.offchan)
10917                 return -EINVAL;
10918
10919         wdev_lock(wdev);
10920         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10921                 wdev_unlock(wdev);
10922                 return -EBUSY;
10923         }
10924         wdev_unlock(wdev);
10925
10926         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10927         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10928
10929         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10930                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10931                 int i;
10932
10933                 if (len % sizeof(u16))
10934                         return -EINVAL;
10935
10936                 params.n_csa_offsets = len / sizeof(u16);
10937                 params.csa_offsets =
10938                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10939
10940                 /* check that all the offsets fit the frame */
10941                 for (i = 0; i < params.n_csa_offsets; i++) {
10942                         if (params.csa_offsets[i] >= params.len)
10943                                 return -EINVAL;
10944                 }
10945         }
10946
10947         if (!params.dont_wait_for_ack) {
10948                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10949                 if (!msg)
10950                         return -ENOMEM;
10951
10952                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10953                                      NL80211_CMD_FRAME);
10954                 if (!hdr) {
10955                         err = -ENOBUFS;
10956                         goto free_msg;
10957                 }
10958         }
10959
10960         params.chan = chandef.chan;
10961         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10962         if (err)
10963                 goto free_msg;
10964
10965         if (msg) {
10966                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10967                                       NL80211_ATTR_PAD))
10968                         goto nla_put_failure;
10969
10970                 genlmsg_end(msg, hdr);
10971                 return genlmsg_reply(msg, info);
10972         }
10973
10974         return 0;
10975
10976  nla_put_failure:
10977         err = -ENOBUFS;
10978  free_msg:
10979         nlmsg_free(msg);
10980         return err;
10981 }
10982
10983 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10984 {
10985         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10986         struct wireless_dev *wdev = info->user_ptr[1];
10987         u64 cookie;
10988
10989         if (!info->attrs[NL80211_ATTR_COOKIE])
10990                 return -EINVAL;
10991
10992         if (!rdev->ops->mgmt_tx_cancel_wait)
10993                 return -EOPNOTSUPP;
10994
10995         switch (wdev->iftype) {
10996         case NL80211_IFTYPE_STATION:
10997         case NL80211_IFTYPE_ADHOC:
10998         case NL80211_IFTYPE_P2P_CLIENT:
10999         case NL80211_IFTYPE_AP:
11000         case NL80211_IFTYPE_AP_VLAN:
11001         case NL80211_IFTYPE_P2P_GO:
11002         case NL80211_IFTYPE_P2P_DEVICE:
11003                 break;
11004         case NL80211_IFTYPE_NAN:
11005         default:
11006                 return -EOPNOTSUPP;
11007         }
11008
11009         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11010
11011         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11012 }
11013
11014 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11015 {
11016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11017         struct wireless_dev *wdev;
11018         struct net_device *dev = info->user_ptr[1];
11019         u8 ps_state;
11020         bool state;
11021         int err;
11022
11023         if (!info->attrs[NL80211_ATTR_PS_STATE])
11024                 return -EINVAL;
11025
11026         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11027
11028         wdev = dev->ieee80211_ptr;
11029
11030         if (!rdev->ops->set_power_mgmt)
11031                 return -EOPNOTSUPP;
11032
11033         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11034
11035         if (state == wdev->ps)
11036                 return 0;
11037
11038         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11039         if (!err)
11040                 wdev->ps = state;
11041         return err;
11042 }
11043
11044 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11045 {
11046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11047         enum nl80211_ps_state ps_state;
11048         struct wireless_dev *wdev;
11049         struct net_device *dev = info->user_ptr[1];
11050         struct sk_buff *msg;
11051         void *hdr;
11052         int err;
11053
11054         wdev = dev->ieee80211_ptr;
11055
11056         if (!rdev->ops->set_power_mgmt)
11057                 return -EOPNOTSUPP;
11058
11059         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11060         if (!msg)
11061                 return -ENOMEM;
11062
11063         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11064                              NL80211_CMD_GET_POWER_SAVE);
11065         if (!hdr) {
11066                 err = -ENOBUFS;
11067                 goto free_msg;
11068         }
11069
11070         if (wdev->ps)
11071                 ps_state = NL80211_PS_ENABLED;
11072         else
11073                 ps_state = NL80211_PS_DISABLED;
11074
11075         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11076                 goto nla_put_failure;
11077
11078         genlmsg_end(msg, hdr);
11079         return genlmsg_reply(msg, info);
11080
11081  nla_put_failure:
11082         err = -ENOBUFS;
11083  free_msg:
11084         nlmsg_free(msg);
11085         return err;
11086 }
11087
11088 static const struct nla_policy
11089 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11090         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11091         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11092         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11093         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11094         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11095         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11096         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11097 };
11098
11099 static int nl80211_set_cqm_txe(struct genl_info *info,
11100                                u32 rate, u32 pkts, u32 intvl)
11101 {
11102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11103         struct net_device *dev = info->user_ptr[1];
11104         struct wireless_dev *wdev = dev->ieee80211_ptr;
11105
11106         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11107                 return -EINVAL;
11108
11109         if (!rdev->ops->set_cqm_txe_config)
11110                 return -EOPNOTSUPP;
11111
11112         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11113             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11114                 return -EOPNOTSUPP;
11115
11116         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11117 }
11118
11119 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11120                                     struct net_device *dev)
11121 {
11122         struct wireless_dev *wdev = dev->ieee80211_ptr;
11123         s32 last, low, high;
11124         u32 hyst;
11125         int i, n, low_index;
11126         int err;
11127
11128         /* RSSI reporting disabled? */
11129         if (!wdev->cqm_config)
11130                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11131
11132         /*
11133          * Obtain current RSSI value if possible, if not and no RSSI threshold
11134          * event has been received yet, we should receive an event after a
11135          * connection is established and enough beacons received to calculate
11136          * the average.
11137          */
11138         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11139             rdev->ops->get_station) {
11140                 struct station_info sinfo = {};
11141                 u8 *mac_addr;
11142
11143                 mac_addr = wdev->current_bss->pub.bssid;
11144
11145                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11146                 if (err)
11147                         return err;
11148
11149                 cfg80211_sinfo_release_content(&sinfo);
11150                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11151                         wdev->cqm_config->last_rssi_event_value =
11152                                 (s8) sinfo.rx_beacon_signal_avg;
11153         }
11154
11155         last = wdev->cqm_config->last_rssi_event_value;
11156         hyst = wdev->cqm_config->rssi_hyst;
11157         n = wdev->cqm_config->n_rssi_thresholds;
11158
11159         for (i = 0; i < n; i++) {
11160                 i = array_index_nospec(i, n);
11161                 if (last < wdev->cqm_config->rssi_thresholds[i])
11162                         break;
11163         }
11164
11165         low_index = i - 1;
11166         if (low_index >= 0) {
11167                 low_index = array_index_nospec(low_index, n);
11168                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11169         } else {
11170                 low = S32_MIN;
11171         }
11172         if (i < n) {
11173                 i = array_index_nospec(i, n);
11174                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11175         } else {
11176                 high = S32_MAX;
11177         }
11178
11179         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11180 }
11181
11182 static int nl80211_set_cqm_rssi(struct genl_info *info,
11183                                 const s32 *thresholds, int n_thresholds,
11184                                 u32 hysteresis)
11185 {
11186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11187         struct net_device *dev = info->user_ptr[1];
11188         struct wireless_dev *wdev = dev->ieee80211_ptr;
11189         int i, err;
11190         s32 prev = S32_MIN;
11191
11192         /* Check all values negative and sorted */
11193         for (i = 0; i < n_thresholds; i++) {
11194                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11195                         return -EINVAL;
11196
11197                 prev = thresholds[i];
11198         }
11199
11200         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11201             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11202                 return -EOPNOTSUPP;
11203
11204         wdev_lock(wdev);
11205         cfg80211_cqm_config_free(wdev);
11206         wdev_unlock(wdev);
11207
11208         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11209                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11210                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11211
11212                 return rdev_set_cqm_rssi_config(rdev, dev,
11213                                                 thresholds[0], hysteresis);
11214         }
11215
11216         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11217                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11218                 return -EOPNOTSUPP;
11219
11220         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11221                 n_thresholds = 0;
11222
11223         wdev_lock(wdev);
11224         if (n_thresholds) {
11225                 struct cfg80211_cqm_config *cqm_config;
11226
11227                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11228                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11229                 if (!cqm_config) {
11230                         err = -ENOMEM;
11231                         goto unlock;
11232                 }
11233
11234                 cqm_config->rssi_hyst = hysteresis;
11235                 cqm_config->n_rssi_thresholds = n_thresholds;
11236                 memcpy(cqm_config->rssi_thresholds, thresholds,
11237                        n_thresholds * sizeof(s32));
11238
11239                 wdev->cqm_config = cqm_config;
11240         }
11241
11242         err = cfg80211_cqm_rssi_update(rdev, dev);
11243
11244 unlock:
11245         wdev_unlock(wdev);
11246
11247         return err;
11248 }
11249
11250 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11251 {
11252         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11253         struct nlattr *cqm;
11254         int err;
11255
11256         cqm = info->attrs[NL80211_ATTR_CQM];
11257         if (!cqm)
11258                 return -EINVAL;
11259
11260         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11261                                           nl80211_attr_cqm_policy,
11262                                           info->extack);
11263         if (err)
11264                 return err;
11265
11266         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11267             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11268                 const s32 *thresholds =
11269                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11270                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11271                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11272
11273                 if (len % 4)
11274                         return -EINVAL;
11275
11276                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11277                                             hysteresis);
11278         }
11279
11280         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11281             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11282             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11283                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11284                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11285                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11286
11287                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11288         }
11289
11290         return -EINVAL;
11291 }
11292
11293 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11294 {
11295         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11296         struct net_device *dev = info->user_ptr[1];
11297         struct ocb_setup setup = {};
11298         int err;
11299
11300         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11301         if (err)
11302                 return err;
11303
11304         return cfg80211_join_ocb(rdev, dev, &setup);
11305 }
11306
11307 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11308 {
11309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11310         struct net_device *dev = info->user_ptr[1];
11311
11312         return cfg80211_leave_ocb(rdev, dev);
11313 }
11314
11315 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11316 {
11317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11318         struct net_device *dev = info->user_ptr[1];
11319         struct mesh_config cfg;
11320         struct mesh_setup setup;
11321         int err;
11322
11323         /* start with default */
11324         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11325         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11326
11327         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11328                 /* and parse parameters if given */
11329                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11330                 if (err)
11331                         return err;
11332         }
11333
11334         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11335             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11336                 return -EINVAL;
11337
11338         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11339         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11340
11341         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11342             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11343                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11344                         return -EINVAL;
11345
11346         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11347                 setup.beacon_interval =
11348                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11349
11350                 err = cfg80211_validate_beacon_int(rdev,
11351                                                    NL80211_IFTYPE_MESH_POINT,
11352                                                    setup.beacon_interval);
11353                 if (err)
11354                         return err;
11355         }
11356
11357         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11358                 setup.dtim_period =
11359                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11360                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11361                         return -EINVAL;
11362         }
11363
11364         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11365                 /* parse additional setup parameters if given */
11366                 err = nl80211_parse_mesh_setup(info, &setup);
11367                 if (err)
11368                         return err;
11369         }
11370
11371         if (setup.user_mpm)
11372                 cfg.auto_open_plinks = false;
11373
11374         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11375                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11376                 if (err)
11377                         return err;
11378         } else {
11379                 /* __cfg80211_join_mesh() will sort it out */
11380                 setup.chandef.chan = NULL;
11381         }
11382
11383         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11384                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11385                 int n_rates =
11386                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11387                 struct ieee80211_supported_band *sband;
11388
11389                 if (!setup.chandef.chan)
11390                         return -EINVAL;
11391
11392                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11393
11394                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11395                                              &setup.basic_rates);
11396                 if (err)
11397                         return err;
11398         }
11399
11400         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11401                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11402                                                     NL80211_ATTR_TX_RATES,
11403                                                     &setup.beacon_rate);
11404                 if (err)
11405                         return err;
11406
11407                 if (!setup.chandef.chan)
11408                         return -EINVAL;
11409
11410                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11411                                               &setup.beacon_rate);
11412                 if (err)
11413                         return err;
11414         }
11415
11416         setup.userspace_handles_dfs =
11417                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11418
11419         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11420                 int r = validate_pae_over_nl80211(rdev, info);
11421
11422                 if (r < 0)
11423                         return r;
11424
11425                 setup.control_port_over_nl80211 = true;
11426         }
11427
11428         wdev_lock(dev->ieee80211_ptr);
11429         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11430         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11431                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11432         wdev_unlock(dev->ieee80211_ptr);
11433
11434         return err;
11435 }
11436
11437 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11438 {
11439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11440         struct net_device *dev = info->user_ptr[1];
11441
11442         return cfg80211_leave_mesh(rdev, dev);
11443 }
11444
11445 #ifdef CONFIG_PM
11446 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11447                                         struct cfg80211_registered_device *rdev)
11448 {
11449         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11450         struct nlattr *nl_pats, *nl_pat;
11451         int i, pat_len;
11452
11453         if (!wowlan->n_patterns)
11454                 return 0;
11455
11456         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11457         if (!nl_pats)
11458                 return -ENOBUFS;
11459
11460         for (i = 0; i < wowlan->n_patterns; i++) {
11461                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11462                 if (!nl_pat)
11463                         return -ENOBUFS;
11464                 pat_len = wowlan->patterns[i].pattern_len;
11465                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11466                             wowlan->patterns[i].mask) ||
11467                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11468                             wowlan->patterns[i].pattern) ||
11469                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11470                                 wowlan->patterns[i].pkt_offset))
11471                         return -ENOBUFS;
11472                 nla_nest_end(msg, nl_pat);
11473         }
11474         nla_nest_end(msg, nl_pats);
11475
11476         return 0;
11477 }
11478
11479 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11480                                    struct cfg80211_wowlan_tcp *tcp)
11481 {
11482         struct nlattr *nl_tcp;
11483
11484         if (!tcp)
11485                 return 0;
11486
11487         nl_tcp = nla_nest_start_noflag(msg,
11488                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11489         if (!nl_tcp)
11490                 return -ENOBUFS;
11491
11492         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11493             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11494             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11495             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11496             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11497             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11498                     tcp->payload_len, tcp->payload) ||
11499             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11500                         tcp->data_interval) ||
11501             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11502                     tcp->wake_len, tcp->wake_data) ||
11503             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11504                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11505                 return -ENOBUFS;
11506
11507         if (tcp->payload_seq.len &&
11508             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11509                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11510                 return -ENOBUFS;
11511
11512         if (tcp->payload_tok.len &&
11513             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11514                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11515                     &tcp->payload_tok))
11516                 return -ENOBUFS;
11517
11518         nla_nest_end(msg, nl_tcp);
11519
11520         return 0;
11521 }
11522
11523 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11524                                   struct cfg80211_sched_scan_request *req)
11525 {
11526         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11527         int i;
11528
11529         if (!req)
11530                 return 0;
11531
11532         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11533         if (!nd)
11534                 return -ENOBUFS;
11535
11536         if (req->n_scan_plans == 1 &&
11537             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11538                         req->scan_plans[0].interval * 1000))
11539                 return -ENOBUFS;
11540
11541         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11542                 return -ENOBUFS;
11543
11544         if (req->relative_rssi_set) {
11545                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11546
11547                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11548                                req->relative_rssi))
11549                         return -ENOBUFS;
11550
11551                 rssi_adjust.band = req->rssi_adjust.band;
11552                 rssi_adjust.delta = req->rssi_adjust.delta;
11553                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11554                             sizeof(rssi_adjust), &rssi_adjust))
11555                         return -ENOBUFS;
11556         }
11557
11558         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11559         if (!freqs)
11560                 return -ENOBUFS;
11561
11562         for (i = 0; i < req->n_channels; i++) {
11563                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11564                         return -ENOBUFS;
11565         }
11566
11567         nla_nest_end(msg, freqs);
11568
11569         if (req->n_match_sets) {
11570                 matches = nla_nest_start_noflag(msg,
11571                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11572                 if (!matches)
11573                         return -ENOBUFS;
11574
11575                 for (i = 0; i < req->n_match_sets; i++) {
11576                         match = nla_nest_start_noflag(msg, i);
11577                         if (!match)
11578                                 return -ENOBUFS;
11579
11580                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11581                                     req->match_sets[i].ssid.ssid_len,
11582                                     req->match_sets[i].ssid.ssid))
11583                                 return -ENOBUFS;
11584                         nla_nest_end(msg, match);
11585                 }
11586                 nla_nest_end(msg, matches);
11587         }
11588
11589         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11590         if (!scan_plans)
11591                 return -ENOBUFS;
11592
11593         for (i = 0; i < req->n_scan_plans; i++) {
11594                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11595                 if (!scan_plan)
11596                         return -ENOBUFS;
11597
11598                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11599                                 req->scan_plans[i].interval) ||
11600                     (req->scan_plans[i].iterations &&
11601                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11602                                  req->scan_plans[i].iterations)))
11603                         return -ENOBUFS;
11604                 nla_nest_end(msg, scan_plan);
11605         }
11606         nla_nest_end(msg, scan_plans);
11607
11608         nla_nest_end(msg, nd);
11609
11610         return 0;
11611 }
11612
11613 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11614 {
11615         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11616         struct sk_buff *msg;
11617         void *hdr;
11618         u32 size = NLMSG_DEFAULT_SIZE;
11619
11620         if (!rdev->wiphy.wowlan)
11621                 return -EOPNOTSUPP;
11622
11623         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11624                 /* adjust size to have room for all the data */
11625                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11626                         rdev->wiphy.wowlan_config->tcp->payload_len +
11627                         rdev->wiphy.wowlan_config->tcp->wake_len +
11628                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11629         }
11630
11631         msg = nlmsg_new(size, GFP_KERNEL);
11632         if (!msg)
11633                 return -ENOMEM;
11634
11635         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11636                              NL80211_CMD_GET_WOWLAN);
11637         if (!hdr)
11638                 goto nla_put_failure;
11639
11640         if (rdev->wiphy.wowlan_config) {
11641                 struct nlattr *nl_wowlan;
11642
11643                 nl_wowlan = nla_nest_start_noflag(msg,
11644                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11645                 if (!nl_wowlan)
11646                         goto nla_put_failure;
11647
11648                 if ((rdev->wiphy.wowlan_config->any &&
11649                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11650                     (rdev->wiphy.wowlan_config->disconnect &&
11651                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11652                     (rdev->wiphy.wowlan_config->magic_pkt &&
11653                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11654                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11655                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11656                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11657                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11658                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11659                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11660                     (rdev->wiphy.wowlan_config->rfkill_release &&
11661                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11662                         goto nla_put_failure;
11663
11664                 if (nl80211_send_wowlan_patterns(msg, rdev))
11665                         goto nla_put_failure;
11666
11667                 if (nl80211_send_wowlan_tcp(msg,
11668                                             rdev->wiphy.wowlan_config->tcp))
11669                         goto nla_put_failure;
11670
11671                 if (nl80211_send_wowlan_nd(
11672                             msg,
11673                             rdev->wiphy.wowlan_config->nd_config))
11674                         goto nla_put_failure;
11675
11676                 nla_nest_end(msg, nl_wowlan);
11677         }
11678
11679         genlmsg_end(msg, hdr);
11680         return genlmsg_reply(msg, info);
11681
11682 nla_put_failure:
11683         nlmsg_free(msg);
11684         return -ENOBUFS;
11685 }
11686
11687 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11688                                     struct nlattr *attr,
11689                                     struct cfg80211_wowlan *trig)
11690 {
11691         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11692         struct cfg80211_wowlan_tcp *cfg;
11693         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11694         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11695         u32 size;
11696         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11697         int err, port;
11698
11699         if (!rdev->wiphy.wowlan->tcp)
11700                 return -EINVAL;
11701
11702         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11703                                           nl80211_wowlan_tcp_policy, NULL);
11704         if (err)
11705                 return err;
11706
11707         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11708             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11709             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11710             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11711             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11712             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11713             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11714             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11715                 return -EINVAL;
11716
11717         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11718         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11719                 return -EINVAL;
11720
11721         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11722                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11723             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11724                 return -EINVAL;
11725
11726         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11727         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11728                 return -EINVAL;
11729
11730         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11731         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11732                 return -EINVAL;
11733
11734         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11735                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11736
11737                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11738                 tokens_size = tokln - sizeof(*tok);
11739
11740                 if (!tok->len || tokens_size % tok->len)
11741                         return -EINVAL;
11742                 if (!rdev->wiphy.wowlan->tcp->tok)
11743                         return -EINVAL;
11744                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11745                         return -EINVAL;
11746                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11747                         return -EINVAL;
11748                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11749                         return -EINVAL;
11750                 if (tok->offset + tok->len > data_size)
11751                         return -EINVAL;
11752         }
11753
11754         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11755                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11756                 if (!rdev->wiphy.wowlan->tcp->seq)
11757                         return -EINVAL;
11758                 if (seq->len == 0 || seq->len > 4)
11759                         return -EINVAL;
11760                 if (seq->len + seq->offset > data_size)
11761                         return -EINVAL;
11762         }
11763
11764         size = sizeof(*cfg);
11765         size += data_size;
11766         size += wake_size + wake_mask_size;
11767         size += tokens_size;
11768
11769         cfg = kzalloc(size, GFP_KERNEL);
11770         if (!cfg)
11771                 return -ENOMEM;
11772         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11773         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11774         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11775                ETH_ALEN);
11776         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11777                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11778         else
11779                 port = 0;
11780 #ifdef CONFIG_INET
11781         /* allocate a socket and port for it and use it */
11782         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11783                             IPPROTO_TCP, &cfg->sock, 1);
11784         if (err) {
11785                 kfree(cfg);
11786                 return err;
11787         }
11788         if (inet_csk_get_port(cfg->sock->sk, port)) {
11789                 sock_release(cfg->sock);
11790                 kfree(cfg);
11791                 return -EADDRINUSE;
11792         }
11793         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11794 #else
11795         if (!port) {
11796                 kfree(cfg);
11797                 return -EINVAL;
11798         }
11799         cfg->src_port = port;
11800 #endif
11801
11802         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11803         cfg->payload_len = data_size;
11804         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11805         memcpy((void *)cfg->payload,
11806                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11807                data_size);
11808         if (seq)
11809                 cfg->payload_seq = *seq;
11810         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11811         cfg->wake_len = wake_size;
11812         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11813         memcpy((void *)cfg->wake_data,
11814                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11815                wake_size);
11816         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11817                          data_size + wake_size;
11818         memcpy((void *)cfg->wake_mask,
11819                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11820                wake_mask_size);
11821         if (tok) {
11822                 cfg->tokens_size = tokens_size;
11823                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11824         }
11825
11826         trig->tcp = cfg;
11827
11828         return 0;
11829 }
11830
11831 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11832                                    const struct wiphy_wowlan_support *wowlan,
11833                                    struct nlattr *attr,
11834                                    struct cfg80211_wowlan *trig)
11835 {
11836         struct nlattr **tb;
11837         int err;
11838
11839         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11840         if (!tb)
11841                 return -ENOMEM;
11842
11843         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11844                 err = -EOPNOTSUPP;
11845                 goto out;
11846         }
11847
11848         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11849                                           nl80211_policy, NULL);
11850         if (err)
11851                 goto out;
11852
11853         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11854                                                    wowlan->max_nd_match_sets);
11855         err = PTR_ERR_OR_ZERO(trig->nd_config);
11856         if (err)
11857                 trig->nd_config = NULL;
11858
11859 out:
11860         kfree(tb);
11861         return err;
11862 }
11863
11864 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11865 {
11866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11867         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11868         struct cfg80211_wowlan new_triggers = {};
11869         struct cfg80211_wowlan *ntrig;
11870         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11871         int err, i;
11872         bool prev_enabled = rdev->wiphy.wowlan_config;
11873         bool regular = false;
11874
11875         if (!wowlan)
11876                 return -EOPNOTSUPP;
11877
11878         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11879                 cfg80211_rdev_free_wowlan(rdev);
11880                 rdev->wiphy.wowlan_config = NULL;
11881                 goto set_wakeup;
11882         }
11883
11884         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11885                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11886                                           nl80211_wowlan_policy, info->extack);
11887         if (err)
11888                 return err;
11889
11890         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11891                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11892                         return -EINVAL;
11893                 new_triggers.any = true;
11894         }
11895
11896         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11897                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11898                         return -EINVAL;
11899                 new_triggers.disconnect = true;
11900                 regular = true;
11901         }
11902
11903         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11904                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11905                         return -EINVAL;
11906                 new_triggers.magic_pkt = true;
11907                 regular = true;
11908         }
11909
11910         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11911                 return -EINVAL;
11912
11913         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11914                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11915                         return -EINVAL;
11916                 new_triggers.gtk_rekey_failure = true;
11917                 regular = true;
11918         }
11919
11920         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11921                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11922                         return -EINVAL;
11923                 new_triggers.eap_identity_req = true;
11924                 regular = true;
11925         }
11926
11927         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11928                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11929                         return -EINVAL;
11930                 new_triggers.four_way_handshake = true;
11931                 regular = true;
11932         }
11933
11934         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11935                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11936                         return -EINVAL;
11937                 new_triggers.rfkill_release = true;
11938                 regular = true;
11939         }
11940
11941         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11942                 struct nlattr *pat;
11943                 int n_patterns = 0;
11944                 int rem, pat_len, mask_len, pkt_offset;
11945                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11946
11947                 regular = true;
11948
11949                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11950                                     rem)
11951                         n_patterns++;
11952                 if (n_patterns > wowlan->n_patterns)
11953                         return -EINVAL;
11954
11955                 new_triggers.patterns = kcalloc(n_patterns,
11956                                                 sizeof(new_triggers.patterns[0]),
11957                                                 GFP_KERNEL);
11958                 if (!new_triggers.patterns)
11959                         return -ENOMEM;
11960
11961                 new_triggers.n_patterns = n_patterns;
11962                 i = 0;
11963
11964                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11965                                     rem) {
11966                         u8 *mask_pat;
11967
11968                         err = nla_parse_nested_deprecated(pat_tb,
11969                                                           MAX_NL80211_PKTPAT,
11970                                                           pat,
11971                                                           nl80211_packet_pattern_policy,
11972                                                           info->extack);
11973                         if (err)
11974                                 goto error;
11975
11976                         err = -EINVAL;
11977                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11978                             !pat_tb[NL80211_PKTPAT_PATTERN])
11979                                 goto error;
11980                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11981                         mask_len = DIV_ROUND_UP(pat_len, 8);
11982                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11983                                 goto error;
11984                         if (pat_len > wowlan->pattern_max_len ||
11985                             pat_len < wowlan->pattern_min_len)
11986                                 goto error;
11987
11988                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11989                                 pkt_offset = 0;
11990                         else
11991                                 pkt_offset = nla_get_u32(
11992                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11993                         if (pkt_offset > wowlan->max_pkt_offset)
11994                                 goto error;
11995                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11996
11997                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11998                         if (!mask_pat) {
11999                                 err = -ENOMEM;
12000                                 goto error;
12001                         }
12002                         new_triggers.patterns[i].mask = mask_pat;
12003                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12004                                mask_len);
12005                         mask_pat += mask_len;
12006                         new_triggers.patterns[i].pattern = mask_pat;
12007                         new_triggers.patterns[i].pattern_len = pat_len;
12008                         memcpy(mask_pat,
12009                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12010                                pat_len);
12011                         i++;
12012                 }
12013         }
12014
12015         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12016                 regular = true;
12017                 err = nl80211_parse_wowlan_tcp(
12018                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12019                         &new_triggers);
12020                 if (err)
12021                         goto error;
12022         }
12023
12024         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12025                 regular = true;
12026                 err = nl80211_parse_wowlan_nd(
12027                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12028                         &new_triggers);
12029                 if (err)
12030                         goto error;
12031         }
12032
12033         /* The 'any' trigger means the device continues operating more or less
12034          * as in its normal operation mode and wakes up the host on most of the
12035          * normal interrupts (like packet RX, ...)
12036          * It therefore makes little sense to combine with the more constrained
12037          * wakeup trigger modes.
12038          */
12039         if (new_triggers.any && regular) {
12040                 err = -EINVAL;
12041                 goto error;
12042         }
12043
12044         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12045         if (!ntrig) {
12046                 err = -ENOMEM;
12047                 goto error;
12048         }
12049         cfg80211_rdev_free_wowlan(rdev);
12050         rdev->wiphy.wowlan_config = ntrig;
12051
12052  set_wakeup:
12053         if (rdev->ops->set_wakeup &&
12054             prev_enabled != !!rdev->wiphy.wowlan_config)
12055                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12056
12057         return 0;
12058  error:
12059         for (i = 0; i < new_triggers.n_patterns; i++)
12060                 kfree(new_triggers.patterns[i].mask);
12061         kfree(new_triggers.patterns);
12062         if (new_triggers.tcp && new_triggers.tcp->sock)
12063                 sock_release(new_triggers.tcp->sock);
12064         kfree(new_triggers.tcp);
12065         kfree(new_triggers.nd_config);
12066         return err;
12067 }
12068 #endif
12069
12070 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12071                                        struct cfg80211_registered_device *rdev)
12072 {
12073         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12074         int i, j, pat_len;
12075         struct cfg80211_coalesce_rules *rule;
12076
12077         if (!rdev->coalesce->n_rules)
12078                 return 0;
12079
12080         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12081         if (!nl_rules)
12082                 return -ENOBUFS;
12083
12084         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12085                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12086                 if (!nl_rule)
12087                         return -ENOBUFS;
12088
12089                 rule = &rdev->coalesce->rules[i];
12090                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12091                                 rule->delay))
12092                         return -ENOBUFS;
12093
12094                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12095                                 rule->condition))
12096                         return -ENOBUFS;
12097
12098                 nl_pats = nla_nest_start_noflag(msg,
12099                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12100                 if (!nl_pats)
12101                         return -ENOBUFS;
12102
12103                 for (j = 0; j < rule->n_patterns; j++) {
12104                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12105                         if (!nl_pat)
12106                                 return -ENOBUFS;
12107                         pat_len = rule->patterns[j].pattern_len;
12108                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12109                                     DIV_ROUND_UP(pat_len, 8),
12110                                     rule->patterns[j].mask) ||
12111                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12112                                     rule->patterns[j].pattern) ||
12113                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12114                                         rule->patterns[j].pkt_offset))
12115                                 return -ENOBUFS;
12116                         nla_nest_end(msg, nl_pat);
12117                 }
12118                 nla_nest_end(msg, nl_pats);
12119                 nla_nest_end(msg, nl_rule);
12120         }
12121         nla_nest_end(msg, nl_rules);
12122
12123         return 0;
12124 }
12125
12126 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12127 {
12128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12129         struct sk_buff *msg;
12130         void *hdr;
12131
12132         if (!rdev->wiphy.coalesce)
12133                 return -EOPNOTSUPP;
12134
12135         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12136         if (!msg)
12137                 return -ENOMEM;
12138
12139         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12140                              NL80211_CMD_GET_COALESCE);
12141         if (!hdr)
12142                 goto nla_put_failure;
12143
12144         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12145                 goto nla_put_failure;
12146
12147         genlmsg_end(msg, hdr);
12148         return genlmsg_reply(msg, info);
12149
12150 nla_put_failure:
12151         nlmsg_free(msg);
12152         return -ENOBUFS;
12153 }
12154
12155 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12156 {
12157         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12158         int i, j;
12159         struct cfg80211_coalesce_rules *rule;
12160
12161         if (!coalesce)
12162                 return;
12163
12164         for (i = 0; i < coalesce->n_rules; i++) {
12165                 rule = &coalesce->rules[i];
12166                 for (j = 0; j < rule->n_patterns; j++)
12167                         kfree(rule->patterns[j].mask);
12168                 kfree(rule->patterns);
12169         }
12170         kfree(coalesce->rules);
12171         kfree(coalesce);
12172         rdev->coalesce = NULL;
12173 }
12174
12175 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12176                                        struct nlattr *rule,
12177                                        struct cfg80211_coalesce_rules *new_rule)
12178 {
12179         int err, i;
12180         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12181         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12182         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12183         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12184
12185         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12186                                           rule, nl80211_coalesce_policy, NULL);
12187         if (err)
12188                 return err;
12189
12190         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12191                 new_rule->delay =
12192                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12193         if (new_rule->delay > coalesce->max_delay)
12194                 return -EINVAL;
12195
12196         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12197                 new_rule->condition =
12198                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12199
12200         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12201                 return -EINVAL;
12202
12203         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12204                             rem)
12205                 n_patterns++;
12206         if (n_patterns > coalesce->n_patterns)
12207                 return -EINVAL;
12208
12209         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12210                                      GFP_KERNEL);
12211         if (!new_rule->patterns)
12212                 return -ENOMEM;
12213
12214         new_rule->n_patterns = n_patterns;
12215         i = 0;
12216
12217         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12218                             rem) {
12219                 u8 *mask_pat;
12220
12221                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12222                                                   pat,
12223                                                   nl80211_packet_pattern_policy,
12224                                                   NULL);
12225                 if (err)
12226                         return err;
12227
12228                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12229                     !pat_tb[NL80211_PKTPAT_PATTERN])
12230                         return -EINVAL;
12231                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12232                 mask_len = DIV_ROUND_UP(pat_len, 8);
12233                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12234                         return -EINVAL;
12235                 if (pat_len > coalesce->pattern_max_len ||
12236                     pat_len < coalesce->pattern_min_len)
12237                         return -EINVAL;
12238
12239                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12240                         pkt_offset = 0;
12241                 else
12242                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12243                 if (pkt_offset > coalesce->max_pkt_offset)
12244                         return -EINVAL;
12245                 new_rule->patterns[i].pkt_offset = pkt_offset;
12246
12247                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12248                 if (!mask_pat)
12249                         return -ENOMEM;
12250
12251                 new_rule->patterns[i].mask = mask_pat;
12252                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12253                        mask_len);
12254
12255                 mask_pat += mask_len;
12256                 new_rule->patterns[i].pattern = mask_pat;
12257                 new_rule->patterns[i].pattern_len = pat_len;
12258                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12259                        pat_len);
12260                 i++;
12261         }
12262
12263         return 0;
12264 }
12265
12266 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12267 {
12268         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12269         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12270         struct cfg80211_coalesce new_coalesce = {};
12271         struct cfg80211_coalesce *n_coalesce;
12272         int err, rem_rule, n_rules = 0, i, j;
12273         struct nlattr *rule;
12274         struct cfg80211_coalesce_rules *tmp_rule;
12275
12276         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12277                 return -EOPNOTSUPP;
12278
12279         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12280                 cfg80211_rdev_free_coalesce(rdev);
12281                 rdev_set_coalesce(rdev, NULL);
12282                 return 0;
12283         }
12284
12285         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12286                             rem_rule)
12287                 n_rules++;
12288         if (n_rules > coalesce->n_rules)
12289                 return -EINVAL;
12290
12291         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12292                                      GFP_KERNEL);
12293         if (!new_coalesce.rules)
12294                 return -ENOMEM;
12295
12296         new_coalesce.n_rules = n_rules;
12297         i = 0;
12298
12299         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12300                             rem_rule) {
12301                 err = nl80211_parse_coalesce_rule(rdev, rule,
12302                                                   &new_coalesce.rules[i]);
12303                 if (err)
12304                         goto error;
12305
12306                 i++;
12307         }
12308
12309         err = rdev_set_coalesce(rdev, &new_coalesce);
12310         if (err)
12311                 goto error;
12312
12313         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12314         if (!n_coalesce) {
12315                 err = -ENOMEM;
12316                 goto error;
12317         }
12318         cfg80211_rdev_free_coalesce(rdev);
12319         rdev->coalesce = n_coalesce;
12320
12321         return 0;
12322 error:
12323         for (i = 0; i < new_coalesce.n_rules; i++) {
12324                 tmp_rule = &new_coalesce.rules[i];
12325                 for (j = 0; j < tmp_rule->n_patterns; j++)
12326                         kfree(tmp_rule->patterns[j].mask);
12327                 kfree(tmp_rule->patterns);
12328         }
12329         kfree(new_coalesce.rules);
12330
12331         return err;
12332 }
12333
12334 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12335 {
12336         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12337         struct net_device *dev = info->user_ptr[1];
12338         struct wireless_dev *wdev = dev->ieee80211_ptr;
12339         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12340         struct cfg80211_gtk_rekey_data rekey_data;
12341         int err;
12342
12343         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12344                 return -EINVAL;
12345
12346         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12347                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12348                                           nl80211_rekey_policy, info->extack);
12349         if (err)
12350                 return err;
12351
12352         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12353             !tb[NL80211_REKEY_DATA_KCK])
12354                 return -EINVAL;
12355         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12356                 return -ERANGE;
12357         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12358             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12359               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12360                 return -ERANGE;
12361         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12362             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12363               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12364                 return -ERANGE;
12365
12366         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12367         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12368         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12369         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12370         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12371         if (tb[NL80211_REKEY_DATA_AKM])
12372                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12373
12374         wdev_lock(wdev);
12375         if (!wdev->current_bss) {
12376                 err = -ENOTCONN;
12377                 goto out;
12378         }
12379
12380         if (!rdev->ops->set_rekey_data) {
12381                 err = -EOPNOTSUPP;
12382                 goto out;
12383         }
12384
12385         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12386  out:
12387         wdev_unlock(wdev);
12388         return err;
12389 }
12390
12391 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12392                                              struct genl_info *info)
12393 {
12394         struct net_device *dev = info->user_ptr[1];
12395         struct wireless_dev *wdev = dev->ieee80211_ptr;
12396
12397         if (wdev->iftype != NL80211_IFTYPE_AP &&
12398             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12399                 return -EINVAL;
12400
12401         if (wdev->ap_unexpected_nlportid)
12402                 return -EBUSY;
12403
12404         wdev->ap_unexpected_nlportid = info->snd_portid;
12405         return 0;
12406 }
12407
12408 static int nl80211_probe_client(struct sk_buff *skb,
12409                                 struct genl_info *info)
12410 {
12411         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12412         struct net_device *dev = info->user_ptr[1];
12413         struct wireless_dev *wdev = dev->ieee80211_ptr;
12414         struct sk_buff *msg;
12415         void *hdr;
12416         const u8 *addr;
12417         u64 cookie;
12418         int err;
12419
12420         if (wdev->iftype != NL80211_IFTYPE_AP &&
12421             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12422                 return -EOPNOTSUPP;
12423
12424         if (!info->attrs[NL80211_ATTR_MAC])
12425                 return -EINVAL;
12426
12427         if (!rdev->ops->probe_client)
12428                 return -EOPNOTSUPP;
12429
12430         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12431         if (!msg)
12432                 return -ENOMEM;
12433
12434         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12435                              NL80211_CMD_PROBE_CLIENT);
12436         if (!hdr) {
12437                 err = -ENOBUFS;
12438                 goto free_msg;
12439         }
12440
12441         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12442
12443         err = rdev_probe_client(rdev, dev, addr, &cookie);
12444         if (err)
12445                 goto free_msg;
12446
12447         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12448                               NL80211_ATTR_PAD))
12449                 goto nla_put_failure;
12450
12451         genlmsg_end(msg, hdr);
12452
12453         return genlmsg_reply(msg, info);
12454
12455  nla_put_failure:
12456         err = -ENOBUFS;
12457  free_msg:
12458         nlmsg_free(msg);
12459         return err;
12460 }
12461
12462 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12463 {
12464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12465         struct cfg80211_beacon_registration *reg, *nreg;
12466         int rv;
12467
12468         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12469                 return -EOPNOTSUPP;
12470
12471         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12472         if (!nreg)
12473                 return -ENOMEM;
12474
12475         /* First, check if already registered. */
12476         spin_lock_bh(&rdev->beacon_registrations_lock);
12477         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12478                 if (reg->nlportid == info->snd_portid) {
12479                         rv = -EALREADY;
12480                         goto out_err;
12481                 }
12482         }
12483         /* Add it to the list */
12484         nreg->nlportid = info->snd_portid;
12485         list_add(&nreg->list, &rdev->beacon_registrations);
12486
12487         spin_unlock_bh(&rdev->beacon_registrations_lock);
12488
12489         return 0;
12490 out_err:
12491         spin_unlock_bh(&rdev->beacon_registrations_lock);
12492         kfree(nreg);
12493         return rv;
12494 }
12495
12496 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12497 {
12498         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12499         struct wireless_dev *wdev = info->user_ptr[1];
12500         int err;
12501
12502         if (!rdev->ops->start_p2p_device)
12503                 return -EOPNOTSUPP;
12504
12505         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12506                 return -EOPNOTSUPP;
12507
12508         if (wdev_running(wdev))
12509                 return 0;
12510
12511         if (rfkill_blocked(rdev->rfkill))
12512                 return -ERFKILL;
12513
12514         err = rdev_start_p2p_device(rdev, wdev);
12515         if (err)
12516                 return err;
12517
12518         wdev->is_running = true;
12519         rdev->opencount++;
12520
12521         return 0;
12522 }
12523
12524 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12525 {
12526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12527         struct wireless_dev *wdev = info->user_ptr[1];
12528
12529         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12530                 return -EOPNOTSUPP;
12531
12532         if (!rdev->ops->stop_p2p_device)
12533                 return -EOPNOTSUPP;
12534
12535         cfg80211_stop_p2p_device(rdev, wdev);
12536
12537         return 0;
12538 }
12539
12540 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12541 {
12542         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12543         struct wireless_dev *wdev = info->user_ptr[1];
12544         struct cfg80211_nan_conf conf = {};
12545         int err;
12546
12547         if (wdev->iftype != NL80211_IFTYPE_NAN)
12548                 return -EOPNOTSUPP;
12549
12550         if (wdev_running(wdev))
12551                 return -EEXIST;
12552
12553         if (rfkill_blocked(rdev->rfkill))
12554                 return -ERFKILL;
12555
12556         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12557                 return -EINVAL;
12558
12559         conf.master_pref =
12560                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12561
12562         if (info->attrs[NL80211_ATTR_BANDS]) {
12563                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12564
12565                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12566                         return -EOPNOTSUPP;
12567
12568                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12569                         return -EINVAL;
12570
12571                 conf.bands = bands;
12572         }
12573
12574         err = rdev_start_nan(rdev, wdev, &conf);
12575         if (err)
12576                 return err;
12577
12578         wdev->is_running = true;
12579         rdev->opencount++;
12580
12581         return 0;
12582 }
12583
12584 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12585 {
12586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12587         struct wireless_dev *wdev = info->user_ptr[1];
12588
12589         if (wdev->iftype != NL80211_IFTYPE_NAN)
12590                 return -EOPNOTSUPP;
12591
12592         cfg80211_stop_nan(rdev, wdev);
12593
12594         return 0;
12595 }
12596
12597 static int validate_nan_filter(struct nlattr *filter_attr)
12598 {
12599         struct nlattr *attr;
12600         int len = 0, n_entries = 0, rem;
12601
12602         nla_for_each_nested(attr, filter_attr, rem) {
12603                 len += nla_len(attr);
12604                 n_entries++;
12605         }
12606
12607         if (len >= U8_MAX)
12608                 return -EINVAL;
12609
12610         return n_entries;
12611 }
12612
12613 static int handle_nan_filter(struct nlattr *attr_filter,
12614                              struct cfg80211_nan_func *func,
12615                              bool tx)
12616 {
12617         struct nlattr *attr;
12618         int n_entries, rem, i;
12619         struct cfg80211_nan_func_filter *filter;
12620
12621         n_entries = validate_nan_filter(attr_filter);
12622         if (n_entries < 0)
12623                 return n_entries;
12624
12625         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12626
12627         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12628         if (!filter)
12629                 return -ENOMEM;
12630
12631         i = 0;
12632         nla_for_each_nested(attr, attr_filter, rem) {
12633                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12634                 filter[i].len = nla_len(attr);
12635                 i++;
12636         }
12637         if (tx) {
12638                 func->num_tx_filters = n_entries;
12639                 func->tx_filters = filter;
12640         } else {
12641                 func->num_rx_filters = n_entries;
12642                 func->rx_filters = filter;
12643         }
12644
12645         return 0;
12646 }
12647
12648 static int nl80211_nan_add_func(struct sk_buff *skb,
12649                                 struct genl_info *info)
12650 {
12651         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12652         struct wireless_dev *wdev = info->user_ptr[1];
12653         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12654         struct cfg80211_nan_func *func;
12655         struct sk_buff *msg = NULL;
12656         void *hdr = NULL;
12657         int err = 0;
12658
12659         if (wdev->iftype != NL80211_IFTYPE_NAN)
12660                 return -EOPNOTSUPP;
12661
12662         if (!wdev_running(wdev))
12663                 return -ENOTCONN;
12664
12665         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12666                 return -EINVAL;
12667
12668         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12669                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12670                                           nl80211_nan_func_policy,
12671                                           info->extack);
12672         if (err)
12673                 return err;
12674
12675         func = kzalloc(sizeof(*func), GFP_KERNEL);
12676         if (!func)
12677                 return -ENOMEM;
12678
12679         func->cookie = cfg80211_assign_cookie(rdev);
12680
12681         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12682             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12683                 err = -EINVAL;
12684                 goto out;
12685         }
12686
12687
12688         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12689
12690         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12691                 err = -EINVAL;
12692                 goto out;
12693         }
12694
12695         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12696                sizeof(func->service_id));
12697
12698         func->close_range =
12699                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12700
12701         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12702                 func->serv_spec_info_len =
12703                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12704                 func->serv_spec_info =
12705                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12706                                 func->serv_spec_info_len,
12707                                 GFP_KERNEL);
12708                 if (!func->serv_spec_info) {
12709                         err = -ENOMEM;
12710                         goto out;
12711                 }
12712         }
12713
12714         if (tb[NL80211_NAN_FUNC_TTL])
12715                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12716
12717         switch (func->type) {
12718         case NL80211_NAN_FUNC_PUBLISH:
12719                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12720                         err = -EINVAL;
12721                         goto out;
12722                 }
12723
12724                 func->publish_type =
12725                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12726                 func->publish_bcast =
12727                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12728
12729                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12730                         func->publish_bcast) {
12731                         err = -EINVAL;
12732                         goto out;
12733                 }
12734                 break;
12735         case NL80211_NAN_FUNC_SUBSCRIBE:
12736                 func->subscribe_active =
12737                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12738                 break;
12739         case NL80211_NAN_FUNC_FOLLOW_UP:
12740                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12741                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12742                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12743                         err = -EINVAL;
12744                         goto out;
12745                 }
12746
12747                 func->followup_id =
12748                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12749                 func->followup_reqid =
12750                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12751                 memcpy(func->followup_dest.addr,
12752                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12753                        sizeof(func->followup_dest.addr));
12754                 if (func->ttl) {
12755                         err = -EINVAL;
12756                         goto out;
12757                 }
12758                 break;
12759         default:
12760                 err = -EINVAL;
12761                 goto out;
12762         }
12763
12764         if (tb[NL80211_NAN_FUNC_SRF]) {
12765                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12766
12767                 err = nla_parse_nested_deprecated(srf_tb,
12768                                                   NL80211_NAN_SRF_ATTR_MAX,
12769                                                   tb[NL80211_NAN_FUNC_SRF],
12770                                                   nl80211_nan_srf_policy,
12771                                                   info->extack);
12772                 if (err)
12773                         goto out;
12774
12775                 func->srf_include =
12776                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12777
12778                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12779                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12780                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12781                                 err = -EINVAL;
12782                                 goto out;
12783                         }
12784
12785                         func->srf_bf_len =
12786                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12787                         func->srf_bf =
12788                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12789                                         func->srf_bf_len, GFP_KERNEL);
12790                         if (!func->srf_bf) {
12791                                 err = -ENOMEM;
12792                                 goto out;
12793                         }
12794
12795                         func->srf_bf_idx =
12796                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12797                 } else {
12798                         struct nlattr *attr, *mac_attr =
12799                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12800                         int n_entries, rem, i = 0;
12801
12802                         if (!mac_attr) {
12803                                 err = -EINVAL;
12804                                 goto out;
12805                         }
12806
12807                         n_entries = validate_acl_mac_addrs(mac_attr);
12808                         if (n_entries <= 0) {
12809                                 err = -EINVAL;
12810                                 goto out;
12811                         }
12812
12813                         func->srf_num_macs = n_entries;
12814                         func->srf_macs =
12815                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12816                                         GFP_KERNEL);
12817                         if (!func->srf_macs) {
12818                                 err = -ENOMEM;
12819                                 goto out;
12820                         }
12821
12822                         nla_for_each_nested(attr, mac_attr, rem)
12823                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12824                                        sizeof(*func->srf_macs));
12825                 }
12826         }
12827
12828         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12829                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12830                                         func, true);
12831                 if (err)
12832                         goto out;
12833         }
12834
12835         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12836                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12837                                         func, false);
12838                 if (err)
12839                         goto out;
12840         }
12841
12842         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12843         if (!msg) {
12844                 err = -ENOMEM;
12845                 goto out;
12846         }
12847
12848         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12849                              NL80211_CMD_ADD_NAN_FUNCTION);
12850         /* This can't really happen - we just allocated 4KB */
12851         if (WARN_ON(!hdr)) {
12852                 err = -ENOMEM;
12853                 goto out;
12854         }
12855
12856         err = rdev_add_nan_func(rdev, wdev, func);
12857 out:
12858         if (err < 0) {
12859                 cfg80211_free_nan_func(func);
12860                 nlmsg_free(msg);
12861                 return err;
12862         }
12863
12864         /* propagate the instance id and cookie to userspace  */
12865         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12866                               NL80211_ATTR_PAD))
12867                 goto nla_put_failure;
12868
12869         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12870         if (!func_attr)
12871                 goto nla_put_failure;
12872
12873         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12874                        func->instance_id))
12875                 goto nla_put_failure;
12876
12877         nla_nest_end(msg, func_attr);
12878
12879         genlmsg_end(msg, hdr);
12880         return genlmsg_reply(msg, info);
12881
12882 nla_put_failure:
12883         nlmsg_free(msg);
12884         return -ENOBUFS;
12885 }
12886
12887 static int nl80211_nan_del_func(struct sk_buff *skb,
12888                                struct genl_info *info)
12889 {
12890         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12891         struct wireless_dev *wdev = info->user_ptr[1];
12892         u64 cookie;
12893
12894         if (wdev->iftype != NL80211_IFTYPE_NAN)
12895                 return -EOPNOTSUPP;
12896
12897         if (!wdev_running(wdev))
12898                 return -ENOTCONN;
12899
12900         if (!info->attrs[NL80211_ATTR_COOKIE])
12901                 return -EINVAL;
12902
12903         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12904
12905         rdev_del_nan_func(rdev, wdev, cookie);
12906
12907         return 0;
12908 }
12909
12910 static int nl80211_nan_change_config(struct sk_buff *skb,
12911                                      struct genl_info *info)
12912 {
12913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12914         struct wireless_dev *wdev = info->user_ptr[1];
12915         struct cfg80211_nan_conf conf = {};
12916         u32 changed = 0;
12917
12918         if (wdev->iftype != NL80211_IFTYPE_NAN)
12919                 return -EOPNOTSUPP;
12920
12921         if (!wdev_running(wdev))
12922                 return -ENOTCONN;
12923
12924         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12925                 conf.master_pref =
12926                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12927                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12928                         return -EINVAL;
12929
12930                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12931         }
12932
12933         if (info->attrs[NL80211_ATTR_BANDS]) {
12934                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12935
12936                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12937                         return -EOPNOTSUPP;
12938
12939                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12940                         return -EINVAL;
12941
12942                 conf.bands = bands;
12943                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12944         }
12945
12946         if (!changed)
12947                 return -EINVAL;
12948
12949         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12950 }
12951
12952 void cfg80211_nan_match(struct wireless_dev *wdev,
12953                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12954 {
12955         struct wiphy *wiphy = wdev->wiphy;
12956         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12957         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12958         struct sk_buff *msg;
12959         void *hdr;
12960
12961         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12962                 return;
12963
12964         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12965         if (!msg)
12966                 return;
12967
12968         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12969         if (!hdr) {
12970                 nlmsg_free(msg);
12971                 return;
12972         }
12973
12974         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12975             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12976                                          wdev->netdev->ifindex)) ||
12977             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12978                               NL80211_ATTR_PAD))
12979                 goto nla_put_failure;
12980
12981         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12982                               NL80211_ATTR_PAD) ||
12983             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12984                 goto nla_put_failure;
12985
12986         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12987         if (!match_attr)
12988                 goto nla_put_failure;
12989
12990         local_func_attr = nla_nest_start_noflag(msg,
12991                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12992         if (!local_func_attr)
12993                 goto nla_put_failure;
12994
12995         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12996                 goto nla_put_failure;
12997
12998         nla_nest_end(msg, local_func_attr);
12999
13000         peer_func_attr = nla_nest_start_noflag(msg,
13001                                                NL80211_NAN_MATCH_FUNC_PEER);
13002         if (!peer_func_attr)
13003                 goto nla_put_failure;
13004
13005         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13006             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13007                 goto nla_put_failure;
13008
13009         if (match->info && match->info_len &&
13010             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13011                     match->info))
13012                 goto nla_put_failure;
13013
13014         nla_nest_end(msg, peer_func_attr);
13015         nla_nest_end(msg, match_attr);
13016         genlmsg_end(msg, hdr);
13017
13018         if (!wdev->owner_nlportid)
13019                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13020                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13021         else
13022                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13023                                 wdev->owner_nlportid);
13024
13025         return;
13026
13027 nla_put_failure:
13028         nlmsg_free(msg);
13029 }
13030 EXPORT_SYMBOL(cfg80211_nan_match);
13031
13032 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13033                                   u8 inst_id,
13034                                   enum nl80211_nan_func_term_reason reason,
13035                                   u64 cookie, gfp_t gfp)
13036 {
13037         struct wiphy *wiphy = wdev->wiphy;
13038         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13039         struct sk_buff *msg;
13040         struct nlattr *func_attr;
13041         void *hdr;
13042
13043         if (WARN_ON(!inst_id))
13044                 return;
13045
13046         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13047         if (!msg)
13048                 return;
13049
13050         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13051         if (!hdr) {
13052                 nlmsg_free(msg);
13053                 return;
13054         }
13055
13056         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13057             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13058                                          wdev->netdev->ifindex)) ||
13059             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13060                               NL80211_ATTR_PAD))
13061                 goto nla_put_failure;
13062
13063         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13064                               NL80211_ATTR_PAD))
13065                 goto nla_put_failure;
13066
13067         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13068         if (!func_attr)
13069                 goto nla_put_failure;
13070
13071         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13072             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13073                 goto nla_put_failure;
13074
13075         nla_nest_end(msg, func_attr);
13076         genlmsg_end(msg, hdr);
13077
13078         if (!wdev->owner_nlportid)
13079                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13080                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13081         else
13082                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13083                                 wdev->owner_nlportid);
13084
13085         return;
13086
13087 nla_put_failure:
13088         nlmsg_free(msg);
13089 }
13090 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13091
13092 static int nl80211_get_protocol_features(struct sk_buff *skb,
13093                                          struct genl_info *info)
13094 {
13095         void *hdr;
13096         struct sk_buff *msg;
13097
13098         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13099         if (!msg)
13100                 return -ENOMEM;
13101
13102         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13103                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13104         if (!hdr)
13105                 goto nla_put_failure;
13106
13107         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13108                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13109                 goto nla_put_failure;
13110
13111         genlmsg_end(msg, hdr);
13112         return genlmsg_reply(msg, info);
13113
13114  nla_put_failure:
13115         kfree_skb(msg);
13116         return -ENOBUFS;
13117 }
13118
13119 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13120 {
13121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13122         struct cfg80211_update_ft_ies_params ft_params;
13123         struct net_device *dev = info->user_ptr[1];
13124
13125         if (!rdev->ops->update_ft_ies)
13126                 return -EOPNOTSUPP;
13127
13128         if (!info->attrs[NL80211_ATTR_MDID] ||
13129             !info->attrs[NL80211_ATTR_IE])
13130                 return -EINVAL;
13131
13132         memset(&ft_params, 0, sizeof(ft_params));
13133         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13134         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13135         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13136
13137         return rdev_update_ft_ies(rdev, dev, &ft_params);
13138 }
13139
13140 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13141                                        struct genl_info *info)
13142 {
13143         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13144         struct wireless_dev *wdev = info->user_ptr[1];
13145         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13146         u16 duration;
13147         int ret;
13148
13149         if (!rdev->ops->crit_proto_start)
13150                 return -EOPNOTSUPP;
13151
13152         if (WARN_ON(!rdev->ops->crit_proto_stop))
13153                 return -EINVAL;
13154
13155         if (rdev->crit_proto_nlportid)
13156                 return -EBUSY;
13157
13158         /* determine protocol if provided */
13159         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13160                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13161
13162         if (proto >= NUM_NL80211_CRIT_PROTO)
13163                 return -EINVAL;
13164
13165         /* timeout must be provided */
13166         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13167                 return -EINVAL;
13168
13169         duration =
13170                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13171
13172         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13173                 return -ERANGE;
13174
13175         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13176         if (!ret)
13177                 rdev->crit_proto_nlportid = info->snd_portid;
13178
13179         return ret;
13180 }
13181
13182 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13183                                       struct genl_info *info)
13184 {
13185         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13186         struct wireless_dev *wdev = info->user_ptr[1];
13187
13188         if (!rdev->ops->crit_proto_stop)
13189                 return -EOPNOTSUPP;
13190
13191         if (rdev->crit_proto_nlportid) {
13192                 rdev->crit_proto_nlportid = 0;
13193                 rdev_crit_proto_stop(rdev, wdev);
13194         }
13195         return 0;
13196 }
13197
13198 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13199                                        struct nlattr *attr,
13200                                        struct netlink_ext_ack *extack)
13201 {
13202         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13203                 if (attr->nla_type & NLA_F_NESTED) {
13204                         NL_SET_ERR_MSG_ATTR(extack, attr,
13205                                             "unexpected nested data");
13206                         return -EINVAL;
13207                 }
13208
13209                 return 0;
13210         }
13211
13212         if (!(attr->nla_type & NLA_F_NESTED)) {
13213                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13214                 return -EINVAL;
13215         }
13216
13217         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13218 }
13219
13220 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13221 {
13222         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13223         struct wireless_dev *wdev =
13224                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13225         int i, err;
13226         u32 vid, subcmd;
13227
13228         if (!rdev->wiphy.vendor_commands)
13229                 return -EOPNOTSUPP;
13230
13231         if (IS_ERR(wdev)) {
13232                 err = PTR_ERR(wdev);
13233                 if (err != -EINVAL)
13234                         return err;
13235                 wdev = NULL;
13236         } else if (wdev->wiphy != &rdev->wiphy) {
13237                 return -EINVAL;
13238         }
13239
13240         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13241             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13242                 return -EINVAL;
13243
13244         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13245         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13246         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13247                 const struct wiphy_vendor_command *vcmd;
13248                 void *data = NULL;
13249                 int len = 0;
13250
13251                 vcmd = &rdev->wiphy.vendor_commands[i];
13252
13253                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13254                         continue;
13255
13256                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13257                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13258                         if (!wdev)
13259                                 return -EINVAL;
13260                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13261                             !wdev->netdev)
13262                                 return -EINVAL;
13263
13264                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13265                                 if (!wdev_running(wdev))
13266                                         return -ENETDOWN;
13267                         }
13268
13269                         if (!vcmd->doit)
13270                                 return -EOPNOTSUPP;
13271                 } else {
13272                         wdev = NULL;
13273                 }
13274
13275                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13276                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13277                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13278
13279                         err = nl80211_vendor_check_policy(vcmd,
13280                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13281                                         info->extack);
13282                         if (err)
13283                                 return err;
13284                 }
13285
13286                 rdev->cur_cmd_info = info;
13287                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13288                 rdev->cur_cmd_info = NULL;
13289                 return err;
13290         }
13291
13292         return -EOPNOTSUPP;
13293 }
13294
13295 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13296                                        struct netlink_callback *cb,
13297                                        struct cfg80211_registered_device **rdev,
13298                                        struct wireless_dev **wdev)
13299 {
13300         struct nlattr **attrbuf;
13301         u32 vid, subcmd;
13302         unsigned int i;
13303         int vcmd_idx = -1;
13304         int err;
13305         void *data = NULL;
13306         unsigned int data_len = 0;
13307
13308         if (cb->args[0]) {
13309                 /* subtract the 1 again here */
13310                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13311                 struct wireless_dev *tmp;
13312
13313                 if (!wiphy)
13314                         return -ENODEV;
13315                 *rdev = wiphy_to_rdev(wiphy);
13316                 *wdev = NULL;
13317
13318                 if (cb->args[1]) {
13319                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13320                                 if (tmp->identifier == cb->args[1] - 1) {
13321                                         *wdev = tmp;
13322                                         break;
13323                                 }
13324                         }
13325                 }
13326
13327                 /* keep rtnl locked in successful case */
13328                 return 0;
13329         }
13330
13331         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13332         if (!attrbuf)
13333                 return -ENOMEM;
13334
13335         err = nlmsg_parse_deprecated(cb->nlh,
13336                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13337                                      attrbuf, nl80211_fam.maxattr,
13338                                      nl80211_policy, NULL);
13339         if (err)
13340                 goto out;
13341
13342         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13343             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13344                 err = -EINVAL;
13345                 goto out;
13346         }
13347
13348         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13349         if (IS_ERR(*wdev))
13350                 *wdev = NULL;
13351
13352         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13353         if (IS_ERR(*rdev)) {
13354                 err = PTR_ERR(*rdev);
13355                 goto out;
13356         }
13357
13358         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13359         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13360
13361         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13362                 const struct wiphy_vendor_command *vcmd;
13363
13364                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13365
13366                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13367                         continue;
13368
13369                 if (!vcmd->dumpit) {
13370                         err = -EOPNOTSUPP;
13371                         goto out;
13372                 }
13373
13374                 vcmd_idx = i;
13375                 break;
13376         }
13377
13378         if (vcmd_idx < 0) {
13379                 err = -EOPNOTSUPP;
13380                 goto out;
13381         }
13382
13383         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13384                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13385                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13386
13387                 err = nl80211_vendor_check_policy(
13388                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13389                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13390                                 cb->extack);
13391                 if (err)
13392                         goto out;
13393         }
13394
13395         /* 0 is the first index - add 1 to parse only once */
13396         cb->args[0] = (*rdev)->wiphy_idx + 1;
13397         /* add 1 to know if it was NULL */
13398         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13399         cb->args[2] = vcmd_idx;
13400         cb->args[3] = (unsigned long)data;
13401         cb->args[4] = data_len;
13402
13403         /* keep rtnl locked in successful case */
13404         err = 0;
13405 out:
13406         kfree(attrbuf);
13407         return err;
13408 }
13409
13410 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13411                                    struct netlink_callback *cb)
13412 {
13413         struct cfg80211_registered_device *rdev;
13414         struct wireless_dev *wdev;
13415         unsigned int vcmd_idx;
13416         const struct wiphy_vendor_command *vcmd;
13417         void *data;
13418         int data_len;
13419         int err;
13420         struct nlattr *vendor_data;
13421
13422         rtnl_lock();
13423         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13424         if (err)
13425                 goto out;
13426
13427         vcmd_idx = cb->args[2];
13428         data = (void *)cb->args[3];
13429         data_len = cb->args[4];
13430         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13431
13432         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13433                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13434                 if (!wdev) {
13435                         err = -EINVAL;
13436                         goto out;
13437                 }
13438                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13439                     !wdev->netdev) {
13440                         err = -EINVAL;
13441                         goto out;
13442                 }
13443
13444                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13445                         if (!wdev_running(wdev)) {
13446                                 err = -ENETDOWN;
13447                                 goto out;
13448                         }
13449                 }
13450         }
13451
13452         while (1) {
13453                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13454                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13455                                            NL80211_CMD_VENDOR);
13456                 if (!hdr)
13457                         break;
13458
13459                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13460                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13461                                                wdev_id(wdev),
13462                                                NL80211_ATTR_PAD))) {
13463                         genlmsg_cancel(skb, hdr);
13464                         break;
13465                 }
13466
13467                 vendor_data = nla_nest_start_noflag(skb,
13468                                                     NL80211_ATTR_VENDOR_DATA);
13469                 if (!vendor_data) {
13470                         genlmsg_cancel(skb, hdr);
13471                         break;
13472                 }
13473
13474                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13475                                    (unsigned long *)&cb->args[5]);
13476                 nla_nest_end(skb, vendor_data);
13477
13478                 if (err == -ENOBUFS || err == -ENOENT) {
13479                         genlmsg_cancel(skb, hdr);
13480                         break;
13481                 } else if (err) {
13482                         genlmsg_cancel(skb, hdr);
13483                         goto out;
13484                 }
13485
13486                 genlmsg_end(skb, hdr);
13487         }
13488
13489         err = skb->len;
13490  out:
13491         rtnl_unlock();
13492         return err;
13493 }
13494
13495 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13496                                            enum nl80211_commands cmd,
13497                                            enum nl80211_attrs attr,
13498                                            int approxlen)
13499 {
13500         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13501
13502         if (WARN_ON(!rdev->cur_cmd_info))
13503                 return NULL;
13504
13505         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13506                                            rdev->cur_cmd_info->snd_portid,
13507                                            rdev->cur_cmd_info->snd_seq,
13508                                            cmd, attr, NULL, GFP_KERNEL);
13509 }
13510 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13511
13512 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13513 {
13514         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13515         void *hdr = ((void **)skb->cb)[1];
13516         struct nlattr *data = ((void **)skb->cb)[2];
13517
13518         /* clear CB data for netlink core to own from now on */
13519         memset(skb->cb, 0, sizeof(skb->cb));
13520
13521         if (WARN_ON(!rdev->cur_cmd_info)) {
13522                 kfree_skb(skb);
13523                 return -EINVAL;
13524         }
13525
13526         nla_nest_end(skb, data);
13527         genlmsg_end(skb, hdr);
13528         return genlmsg_reply(skb, rdev->cur_cmd_info);
13529 }
13530 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13531
13532 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13533 {
13534         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13535
13536         if (WARN_ON(!rdev->cur_cmd_info))
13537                 return 0;
13538
13539         return rdev->cur_cmd_info->snd_portid;
13540 }
13541 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13542
13543 static int nl80211_set_qos_map(struct sk_buff *skb,
13544                                struct genl_info *info)
13545 {
13546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13547         struct cfg80211_qos_map *qos_map = NULL;
13548         struct net_device *dev = info->user_ptr[1];
13549         u8 *pos, len, num_des, des_len, des;
13550         int ret;
13551
13552         if (!rdev->ops->set_qos_map)
13553                 return -EOPNOTSUPP;
13554
13555         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13556                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13557                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13558
13559                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13560                     len > IEEE80211_QOS_MAP_LEN_MAX)
13561                         return -EINVAL;
13562
13563                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13564                 if (!qos_map)
13565                         return -ENOMEM;
13566
13567                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13568                 if (num_des) {
13569                         des_len = num_des *
13570                                 sizeof(struct cfg80211_dscp_exception);
13571                         memcpy(qos_map->dscp_exception, pos, des_len);
13572                         qos_map->num_des = num_des;
13573                         for (des = 0; des < num_des; des++) {
13574                                 if (qos_map->dscp_exception[des].up > 7) {
13575                                         kfree(qos_map);
13576                                         return -EINVAL;
13577                                 }
13578                         }
13579                         pos += des_len;
13580                 }
13581                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13582         }
13583
13584         wdev_lock(dev->ieee80211_ptr);
13585         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13586         if (!ret)
13587                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13588         wdev_unlock(dev->ieee80211_ptr);
13589
13590         kfree(qos_map);
13591         return ret;
13592 }
13593
13594 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13595 {
13596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13597         struct net_device *dev = info->user_ptr[1];
13598         struct wireless_dev *wdev = dev->ieee80211_ptr;
13599         const u8 *peer;
13600         u8 tsid, up;
13601         u16 admitted_time = 0;
13602         int err;
13603
13604         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13605                 return -EOPNOTSUPP;
13606
13607         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13608             !info->attrs[NL80211_ATTR_USER_PRIO])
13609                 return -EINVAL;
13610
13611         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13612         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13613
13614         /* WMM uses TIDs 0-7 even for TSPEC */
13615         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13616                 /* TODO: handle 802.11 TSPEC/admission control
13617                  * need more attributes for that (e.g. BA session requirement);
13618                  * change the WMM adminssion test above to allow both then
13619                  */
13620                 return -EINVAL;
13621         }
13622
13623         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13624
13625         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13626                 admitted_time =
13627                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13628                 if (!admitted_time)
13629                         return -EINVAL;
13630         }
13631
13632         wdev_lock(wdev);
13633         switch (wdev->iftype) {
13634         case NL80211_IFTYPE_STATION:
13635         case NL80211_IFTYPE_P2P_CLIENT:
13636                 if (wdev->current_bss)
13637                         break;
13638                 err = -ENOTCONN;
13639                 goto out;
13640         default:
13641                 err = -EOPNOTSUPP;
13642                 goto out;
13643         }
13644
13645         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13646
13647  out:
13648         wdev_unlock(wdev);
13649         return err;
13650 }
13651
13652 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13653 {
13654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13655         struct net_device *dev = info->user_ptr[1];
13656         struct wireless_dev *wdev = dev->ieee80211_ptr;
13657         const u8 *peer;
13658         u8 tsid;
13659         int err;
13660
13661         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13662                 return -EINVAL;
13663
13664         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13665         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13666
13667         wdev_lock(wdev);
13668         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13669         wdev_unlock(wdev);
13670
13671         return err;
13672 }
13673
13674 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13675                                        struct genl_info *info)
13676 {
13677         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13678         struct net_device *dev = info->user_ptr[1];
13679         struct wireless_dev *wdev = dev->ieee80211_ptr;
13680         struct cfg80211_chan_def chandef = {};
13681         const u8 *addr;
13682         u8 oper_class;
13683         int err;
13684
13685         if (!rdev->ops->tdls_channel_switch ||
13686             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13687                 return -EOPNOTSUPP;
13688
13689         switch (dev->ieee80211_ptr->iftype) {
13690         case NL80211_IFTYPE_STATION:
13691         case NL80211_IFTYPE_P2P_CLIENT:
13692                 break;
13693         default:
13694                 return -EOPNOTSUPP;
13695         }
13696
13697         if (!info->attrs[NL80211_ATTR_MAC] ||
13698             !info->attrs[NL80211_ATTR_OPER_CLASS])
13699                 return -EINVAL;
13700
13701         err = nl80211_parse_chandef(rdev, info, &chandef);
13702         if (err)
13703                 return err;
13704
13705         /*
13706          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13707          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13708          * specification is not defined for them.
13709          */
13710         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13711             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13712             chandef.width != NL80211_CHAN_WIDTH_20)
13713                 return -EINVAL;
13714
13715         /* we will be active on the TDLS link */
13716         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13717                                            wdev->iftype))
13718                 return -EINVAL;
13719
13720         /* don't allow switching to DFS channels */
13721         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13722                 return -EINVAL;
13723
13724         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13725         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13726
13727         wdev_lock(wdev);
13728         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13729         wdev_unlock(wdev);
13730
13731         return err;
13732 }
13733
13734 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13735                                               struct genl_info *info)
13736 {
13737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13738         struct net_device *dev = info->user_ptr[1];
13739         struct wireless_dev *wdev = dev->ieee80211_ptr;
13740         const u8 *addr;
13741
13742         if (!rdev->ops->tdls_channel_switch ||
13743             !rdev->ops->tdls_cancel_channel_switch ||
13744             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13745                 return -EOPNOTSUPP;
13746
13747         switch (dev->ieee80211_ptr->iftype) {
13748         case NL80211_IFTYPE_STATION:
13749         case NL80211_IFTYPE_P2P_CLIENT:
13750                 break;
13751         default:
13752                 return -EOPNOTSUPP;
13753         }
13754
13755         if (!info->attrs[NL80211_ATTR_MAC])
13756                 return -EINVAL;
13757
13758         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13759
13760         wdev_lock(wdev);
13761         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13762         wdev_unlock(wdev);
13763
13764         return 0;
13765 }
13766
13767 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13768                                             struct genl_info *info)
13769 {
13770         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13771         struct net_device *dev = info->user_ptr[1];
13772         struct wireless_dev *wdev = dev->ieee80211_ptr;
13773         const struct nlattr *nla;
13774         bool enabled;
13775
13776         if (!rdev->ops->set_multicast_to_unicast)
13777                 return -EOPNOTSUPP;
13778
13779         if (wdev->iftype != NL80211_IFTYPE_AP &&
13780             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13781                 return -EOPNOTSUPP;
13782
13783         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13784         enabled = nla_get_flag(nla);
13785
13786         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13787 }
13788
13789 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13790 {
13791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13792         struct net_device *dev = info->user_ptr[1];
13793         struct wireless_dev *wdev = dev->ieee80211_ptr;
13794         struct cfg80211_pmk_conf pmk_conf = {};
13795         int ret;
13796
13797         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13798             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13799                 return -EOPNOTSUPP;
13800
13801         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13802                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13803                 return -EOPNOTSUPP;
13804
13805         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13806                 return -EINVAL;
13807
13808         wdev_lock(wdev);
13809         if (!wdev->current_bss) {
13810                 ret = -ENOTCONN;
13811                 goto out;
13812         }
13813
13814         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13815         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13816                 ret = -EINVAL;
13817                 goto out;
13818         }
13819
13820         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13821         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13822         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13823             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13824                 ret = -EINVAL;
13825                 goto out;
13826         }
13827
13828         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13829                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13830
13831                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13832                         ret = -EINVAL;
13833                         goto out;
13834                 }
13835
13836                 pmk_conf.pmk_r0_name =
13837                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13838         }
13839
13840         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13841 out:
13842         wdev_unlock(wdev);
13843         return ret;
13844 }
13845
13846 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13847 {
13848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13849         struct net_device *dev = info->user_ptr[1];
13850         struct wireless_dev *wdev = dev->ieee80211_ptr;
13851         const u8 *aa;
13852         int ret;
13853
13854         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13855             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13856                 return -EOPNOTSUPP;
13857
13858         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13859                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13860                 return -EOPNOTSUPP;
13861
13862         if (!info->attrs[NL80211_ATTR_MAC])
13863                 return -EINVAL;
13864
13865         wdev_lock(wdev);
13866         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13867         ret = rdev_del_pmk(rdev, dev, aa);
13868         wdev_unlock(wdev);
13869
13870         return ret;
13871 }
13872
13873 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13874 {
13875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13876         struct net_device *dev = info->user_ptr[1];
13877         struct cfg80211_external_auth_params params;
13878
13879         if (!rdev->ops->external_auth)
13880                 return -EOPNOTSUPP;
13881
13882         if (!info->attrs[NL80211_ATTR_SSID] &&
13883             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13884             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13885                 return -EINVAL;
13886
13887         if (!info->attrs[NL80211_ATTR_BSSID])
13888                 return -EINVAL;
13889
13890         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13891                 return -EINVAL;
13892
13893         memset(&params, 0, sizeof(params));
13894
13895         if (info->attrs[NL80211_ATTR_SSID]) {
13896                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13897                 if (params.ssid.ssid_len == 0 ||
13898                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13899                         return -EINVAL;
13900                 memcpy(params.ssid.ssid,
13901                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13902                        params.ssid.ssid_len);
13903         }
13904
13905         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13906                ETH_ALEN);
13907
13908         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13909
13910         if (info->attrs[NL80211_ATTR_PMKID])
13911                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13912
13913         return rdev_external_auth(rdev, dev, &params);
13914 }
13915
13916 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13917 {
13918         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
13919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13920         struct net_device *dev = info->user_ptr[1];
13921         struct wireless_dev *wdev = dev->ieee80211_ptr;
13922         const u8 *buf;
13923         size_t len;
13924         u8 *dest;
13925         u16 proto;
13926         bool noencrypt;
13927         u64 cookie = 0;
13928         int err;
13929
13930         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13931                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13932                 return -EOPNOTSUPP;
13933
13934         if (!rdev->ops->tx_control_port)
13935                 return -EOPNOTSUPP;
13936
13937         if (!info->attrs[NL80211_ATTR_FRAME] ||
13938             !info->attrs[NL80211_ATTR_MAC] ||
13939             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13940                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13941                 return -EINVAL;
13942         }
13943
13944         wdev_lock(wdev);
13945
13946         switch (wdev->iftype) {
13947         case NL80211_IFTYPE_AP:
13948         case NL80211_IFTYPE_P2P_GO:
13949         case NL80211_IFTYPE_MESH_POINT:
13950                 break;
13951         case NL80211_IFTYPE_ADHOC:
13952         case NL80211_IFTYPE_STATION:
13953         case NL80211_IFTYPE_P2P_CLIENT:
13954                 if (wdev->current_bss)
13955                         break;
13956                 err = -ENOTCONN;
13957                 goto out;
13958         default:
13959                 err = -EOPNOTSUPP;
13960                 goto out;
13961         }
13962
13963         wdev_unlock(wdev);
13964
13965         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13966         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13967         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13968         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13969         noencrypt =
13970                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13971
13972         err = rdev_tx_control_port(rdev, dev, buf, len,
13973                                    dest, cpu_to_be16(proto), noencrypt,
13974                                    dont_wait_for_ack ? NULL : &cookie);
13975         if (!err && !dont_wait_for_ack)
13976                 nl_set_extack_cookie_u64(info->extack, cookie);
13977         return err;
13978  out:
13979         wdev_unlock(wdev);
13980         return err;
13981 }
13982
13983 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13984                                            struct genl_info *info)
13985 {
13986         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13987         struct net_device *dev = info->user_ptr[1];
13988         struct wireless_dev *wdev = dev->ieee80211_ptr;
13989         struct cfg80211_ftm_responder_stats ftm_stats = {};
13990         struct sk_buff *msg;
13991         void *hdr;
13992         struct nlattr *ftm_stats_attr;
13993         int err;
13994
13995         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13996                 return -EOPNOTSUPP;
13997
13998         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13999         if (err)
14000                 return err;
14001
14002         if (!ftm_stats.filled)
14003                 return -ENODATA;
14004
14005         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14006         if (!msg)
14007                 return -ENOMEM;
14008
14009         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14010                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14011         if (!hdr)
14012                 goto nla_put_failure;
14013
14014         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14015                 goto nla_put_failure;
14016
14017         ftm_stats_attr = nla_nest_start_noflag(msg,
14018                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14019         if (!ftm_stats_attr)
14020                 goto nla_put_failure;
14021
14022 #define SET_FTM(field, name, type)                                       \
14023         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14024             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14025                              ftm_stats.field))                           \
14026                 goto nla_put_failure; } while (0)
14027 #define SET_FTM_U64(field, name)                                         \
14028         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14029             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14030                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14031                 goto nla_put_failure; } while (0)
14032
14033         SET_FTM(success_num, SUCCESS_NUM, u32);
14034         SET_FTM(partial_num, PARTIAL_NUM, u32);
14035         SET_FTM(failed_num, FAILED_NUM, u32);
14036         SET_FTM(asap_num, ASAP_NUM, u32);
14037         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14038         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14039         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14040         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14041         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14042 #undef SET_FTM
14043
14044         nla_nest_end(msg, ftm_stats_attr);
14045
14046         genlmsg_end(msg, hdr);
14047         return genlmsg_reply(msg, info);
14048
14049 nla_put_failure:
14050         nlmsg_free(msg);
14051         return -ENOBUFS;
14052 }
14053
14054 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14055 {
14056         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14057         struct cfg80211_update_owe_info owe_info;
14058         struct net_device *dev = info->user_ptr[1];
14059
14060         if (!rdev->ops->update_owe_info)
14061                 return -EOPNOTSUPP;
14062
14063         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14064             !info->attrs[NL80211_ATTR_MAC])
14065                 return -EINVAL;
14066
14067         memset(&owe_info, 0, sizeof(owe_info));
14068         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14069         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14070
14071         if (info->attrs[NL80211_ATTR_IE]) {
14072                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14073                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14074         }
14075
14076         return rdev_update_owe_info(rdev, dev, &owe_info);
14077 }
14078
14079 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14080 {
14081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14082         struct net_device *dev = info->user_ptr[1];
14083         struct wireless_dev *wdev = dev->ieee80211_ptr;
14084         struct station_info sinfo = {};
14085         const u8 *buf;
14086         size_t len;
14087         u8 *dest;
14088         int err;
14089
14090         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14091                 return -EOPNOTSUPP;
14092
14093         if (!info->attrs[NL80211_ATTR_MAC] ||
14094             !info->attrs[NL80211_ATTR_FRAME]) {
14095                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14096                 return -EINVAL;
14097         }
14098
14099         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14100                 return -EOPNOTSUPP;
14101
14102         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14103         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14104         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14105
14106         if (len < sizeof(struct ethhdr))
14107                 return -EINVAL;
14108
14109         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14110             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14111                 return -EINVAL;
14112
14113         err = rdev_get_station(rdev, dev, dest, &sinfo);
14114         if (err)
14115                 return err;
14116
14117         cfg80211_sinfo_release_content(&sinfo);
14118
14119         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14120 }
14121
14122 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14123                           struct nlattr *attrs[], struct net_device *dev,
14124                           struct cfg80211_tid_cfg *tid_conf,
14125                           struct genl_info *info, const u8 *peer)
14126 {
14127         struct netlink_ext_ack *extack = info->extack;
14128         u64 mask;
14129         int err;
14130
14131         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14132                 return -EINVAL;
14133
14134         tid_conf->config_override =
14135                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14136         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14137
14138         if (tid_conf->config_override) {
14139                 if (rdev->ops->reset_tid_config) {
14140                         err = rdev_reset_tid_config(rdev, dev, peer,
14141                                                     tid_conf->tids);
14142                         if (err)
14143                                 return err;
14144                 } else {
14145                         return -EINVAL;
14146                 }
14147         }
14148
14149         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14150                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14151                 tid_conf->noack =
14152                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14153         }
14154
14155         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14156                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14157                 tid_conf->retry_short =
14158                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14159
14160                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14161                         return -EINVAL;
14162         }
14163
14164         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14165                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14166                 tid_conf->retry_long =
14167                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14168
14169                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14170                         return -EINVAL;
14171         }
14172
14173         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14174                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14175                 tid_conf->ampdu =
14176                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14177         }
14178
14179         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14180                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14181                 tid_conf->rtscts =
14182                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14183         }
14184
14185         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14186                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14187                 tid_conf->amsdu =
14188                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14189         }
14190
14191         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14192                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14193
14194                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14195
14196                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14197                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14198                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14199                                                     &tid_conf->txrate_mask);
14200                         if (err)
14201                                 return err;
14202
14203                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14204                 }
14205                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14206         }
14207
14208         if (peer)
14209                 mask = rdev->wiphy.tid_config_support.peer;
14210         else
14211                 mask = rdev->wiphy.tid_config_support.vif;
14212
14213         if (tid_conf->mask & ~mask) {
14214                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14215                 return -ENOTSUPP;
14216         }
14217
14218         return 0;
14219 }
14220
14221 static int nl80211_set_tid_config(struct sk_buff *skb,
14222                                   struct genl_info *info)
14223 {
14224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14225         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14226         struct net_device *dev = info->user_ptr[1];
14227         struct cfg80211_tid_config *tid_config;
14228         struct nlattr *tid;
14229         int conf_idx = 0, rem_conf;
14230         int ret = -EINVAL;
14231         u32 num_conf = 0;
14232
14233         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14234                 return -EINVAL;
14235
14236         if (!rdev->ops->set_tid_config)
14237                 return -EOPNOTSUPP;
14238
14239         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14240                             rem_conf)
14241                 num_conf++;
14242
14243         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14244                              GFP_KERNEL);
14245         if (!tid_config)
14246                 return -ENOMEM;
14247
14248         tid_config->n_tid_conf = num_conf;
14249
14250         if (info->attrs[NL80211_ATTR_MAC])
14251                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14252
14253         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14254                             rem_conf) {
14255                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14256                                        tid, NULL, NULL);
14257
14258                 if (ret)
14259                         goto bad_tid_conf;
14260
14261                 ret = parse_tid_conf(rdev, attrs, dev,
14262                                      &tid_config->tid_conf[conf_idx],
14263                                      info, tid_config->peer);
14264                 if (ret)
14265                         goto bad_tid_conf;
14266
14267                 conf_idx++;
14268         }
14269
14270         ret = rdev_set_tid_config(rdev, dev, tid_config);
14271
14272 bad_tid_conf:
14273         kfree(tid_config);
14274         return ret;
14275 }
14276
14277 #define NL80211_FLAG_NEED_WIPHY         0x01
14278 #define NL80211_FLAG_NEED_NETDEV        0x02
14279 #define NL80211_FLAG_NEED_RTNL          0x04
14280 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14281 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14282                                          NL80211_FLAG_CHECK_NETDEV_UP)
14283 #define NL80211_FLAG_NEED_WDEV          0x10
14284 /* If a netdev is associated, it must be UP, P2P must be started */
14285 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14286                                          NL80211_FLAG_CHECK_NETDEV_UP)
14287 #define NL80211_FLAG_CLEAR_SKB          0x20
14288
14289 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14290                             struct genl_info *info)
14291 {
14292         struct cfg80211_registered_device *rdev;
14293         struct wireless_dev *wdev;
14294         struct net_device *dev;
14295         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14296
14297         if (rtnl)
14298                 rtnl_lock();
14299
14300         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14301                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14302                 if (IS_ERR(rdev)) {
14303                         if (rtnl)
14304                                 rtnl_unlock();
14305                         return PTR_ERR(rdev);
14306                 }
14307                 info->user_ptr[0] = rdev;
14308         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14309                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14310                 ASSERT_RTNL();
14311
14312                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14313                                                   info->attrs);
14314                 if (IS_ERR(wdev)) {
14315                         if (rtnl)
14316                                 rtnl_unlock();
14317                         return PTR_ERR(wdev);
14318                 }
14319
14320                 dev = wdev->netdev;
14321                 rdev = wiphy_to_rdev(wdev->wiphy);
14322
14323                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14324                         if (!dev) {
14325                                 if (rtnl)
14326                                         rtnl_unlock();
14327                                 return -EINVAL;
14328                         }
14329
14330                         info->user_ptr[1] = dev;
14331                 } else {
14332                         info->user_ptr[1] = wdev;
14333                 }
14334
14335                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14336                     !wdev_running(wdev)) {
14337                         if (rtnl)
14338                                 rtnl_unlock();
14339                         return -ENETDOWN;
14340                 }
14341
14342                 if (dev)
14343                         dev_hold(dev);
14344
14345                 info->user_ptr[0] = rdev;
14346         }
14347
14348         return 0;
14349 }
14350
14351 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14352                               struct genl_info *info)
14353 {
14354         if (info->user_ptr[1]) {
14355                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14356                         struct wireless_dev *wdev = info->user_ptr[1];
14357
14358                         if (wdev->netdev)
14359                                 dev_put(wdev->netdev);
14360                 } else {
14361                         dev_put(info->user_ptr[1]);
14362                 }
14363         }
14364
14365         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14366                 rtnl_unlock();
14367
14368         /* If needed, clear the netlink message payload from the SKB
14369          * as it might contain key data that shouldn't stick around on
14370          * the heap after the SKB is freed. The netlink message header
14371          * is still needed for further processing, so leave it intact.
14372          */
14373         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14374                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14375
14376                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14377         }
14378 }
14379
14380 static const struct genl_ops nl80211_ops[] = {
14381         {
14382                 .cmd = NL80211_CMD_GET_WIPHY,
14383                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14384                 .doit = nl80211_get_wiphy,
14385                 .dumpit = nl80211_dump_wiphy,
14386                 .done = nl80211_dump_wiphy_done,
14387                 /* can be retrieved by unprivileged users */
14388                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14389                                   NL80211_FLAG_NEED_RTNL,
14390         },
14391         {
14392                 .cmd = NL80211_CMD_SET_WIPHY,
14393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14394                 .doit = nl80211_set_wiphy,
14395                 .flags = GENL_UNS_ADMIN_PERM,
14396                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14397         },
14398         {
14399                 .cmd = NL80211_CMD_GET_INTERFACE,
14400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14401                 .doit = nl80211_get_interface,
14402                 .dumpit = nl80211_dump_interface,
14403                 /* can be retrieved by unprivileged users */
14404                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14405                                   NL80211_FLAG_NEED_RTNL,
14406         },
14407         {
14408                 .cmd = NL80211_CMD_SET_INTERFACE,
14409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14410                 .doit = nl80211_set_interface,
14411                 .flags = GENL_UNS_ADMIN_PERM,
14412                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14413                                   NL80211_FLAG_NEED_RTNL,
14414         },
14415         {
14416                 .cmd = NL80211_CMD_NEW_INTERFACE,
14417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14418                 .doit = nl80211_new_interface,
14419                 .flags = GENL_UNS_ADMIN_PERM,
14420                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14421                                   NL80211_FLAG_NEED_RTNL,
14422         },
14423         {
14424                 .cmd = NL80211_CMD_DEL_INTERFACE,
14425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14426                 .doit = nl80211_del_interface,
14427                 .flags = GENL_UNS_ADMIN_PERM,
14428                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14429                                   NL80211_FLAG_NEED_RTNL,
14430         },
14431         {
14432                 .cmd = NL80211_CMD_GET_KEY,
14433                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14434                 .doit = nl80211_get_key,
14435                 .flags = GENL_UNS_ADMIN_PERM,
14436                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14437                                   NL80211_FLAG_NEED_RTNL,
14438         },
14439         {
14440                 .cmd = NL80211_CMD_SET_KEY,
14441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14442                 .doit = nl80211_set_key,
14443                 .flags = GENL_UNS_ADMIN_PERM,
14444                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14445                                   NL80211_FLAG_NEED_RTNL |
14446                                   NL80211_FLAG_CLEAR_SKB,
14447         },
14448         {
14449                 .cmd = NL80211_CMD_NEW_KEY,
14450                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14451                 .doit = nl80211_new_key,
14452                 .flags = GENL_UNS_ADMIN_PERM,
14453                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14454                                   NL80211_FLAG_NEED_RTNL |
14455                                   NL80211_FLAG_CLEAR_SKB,
14456         },
14457         {
14458                 .cmd = NL80211_CMD_DEL_KEY,
14459                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14460                 .doit = nl80211_del_key,
14461                 .flags = GENL_UNS_ADMIN_PERM,
14462                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14463                                   NL80211_FLAG_NEED_RTNL,
14464         },
14465         {
14466                 .cmd = NL80211_CMD_SET_BEACON,
14467                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14468                 .flags = GENL_UNS_ADMIN_PERM,
14469                 .doit = nl80211_set_beacon,
14470                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14471                                   NL80211_FLAG_NEED_RTNL,
14472         },
14473         {
14474                 .cmd = NL80211_CMD_START_AP,
14475                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14476                 .flags = GENL_UNS_ADMIN_PERM,
14477                 .doit = nl80211_start_ap,
14478                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14479                                   NL80211_FLAG_NEED_RTNL,
14480         },
14481         {
14482                 .cmd = NL80211_CMD_STOP_AP,
14483                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14484                 .flags = GENL_UNS_ADMIN_PERM,
14485                 .doit = nl80211_stop_ap,
14486                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14487                                   NL80211_FLAG_NEED_RTNL,
14488         },
14489         {
14490                 .cmd = NL80211_CMD_GET_STATION,
14491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14492                 .doit = nl80211_get_station,
14493                 .dumpit = nl80211_dump_station,
14494                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14495                                   NL80211_FLAG_NEED_RTNL,
14496         },
14497         {
14498                 .cmd = NL80211_CMD_SET_STATION,
14499                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14500                 .doit = nl80211_set_station,
14501                 .flags = GENL_UNS_ADMIN_PERM,
14502                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14503                                   NL80211_FLAG_NEED_RTNL,
14504         },
14505         {
14506                 .cmd = NL80211_CMD_NEW_STATION,
14507                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14508                 .doit = nl80211_new_station,
14509                 .flags = GENL_UNS_ADMIN_PERM,
14510                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14511                                   NL80211_FLAG_NEED_RTNL,
14512         },
14513         {
14514                 .cmd = NL80211_CMD_DEL_STATION,
14515                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14516                 .doit = nl80211_del_station,
14517                 .flags = GENL_UNS_ADMIN_PERM,
14518                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14519                                   NL80211_FLAG_NEED_RTNL,
14520         },
14521         {
14522                 .cmd = NL80211_CMD_GET_MPATH,
14523                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14524                 .doit = nl80211_get_mpath,
14525                 .dumpit = nl80211_dump_mpath,
14526                 .flags = GENL_UNS_ADMIN_PERM,
14527                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14528                                   NL80211_FLAG_NEED_RTNL,
14529         },
14530         {
14531                 .cmd = NL80211_CMD_GET_MPP,
14532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14533                 .doit = nl80211_get_mpp,
14534                 .dumpit = nl80211_dump_mpp,
14535                 .flags = GENL_UNS_ADMIN_PERM,
14536                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14537                                   NL80211_FLAG_NEED_RTNL,
14538         },
14539         {
14540                 .cmd = NL80211_CMD_SET_MPATH,
14541                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14542                 .doit = nl80211_set_mpath,
14543                 .flags = GENL_UNS_ADMIN_PERM,
14544                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14545                                   NL80211_FLAG_NEED_RTNL,
14546         },
14547         {
14548                 .cmd = NL80211_CMD_NEW_MPATH,
14549                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14550                 .doit = nl80211_new_mpath,
14551                 .flags = GENL_UNS_ADMIN_PERM,
14552                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14553                                   NL80211_FLAG_NEED_RTNL,
14554         },
14555         {
14556                 .cmd = NL80211_CMD_DEL_MPATH,
14557                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14558                 .doit = nl80211_del_mpath,
14559                 .flags = GENL_UNS_ADMIN_PERM,
14560                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14561                                   NL80211_FLAG_NEED_RTNL,
14562         },
14563         {
14564                 .cmd = NL80211_CMD_SET_BSS,
14565                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14566                 .doit = nl80211_set_bss,
14567                 .flags = GENL_UNS_ADMIN_PERM,
14568                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14569                                   NL80211_FLAG_NEED_RTNL,
14570         },
14571         {
14572                 .cmd = NL80211_CMD_GET_REG,
14573                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14574                 .doit = nl80211_get_reg_do,
14575                 .dumpit = nl80211_get_reg_dump,
14576                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14577                 /* can be retrieved by unprivileged users */
14578         },
14579 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14580         {
14581                 .cmd = NL80211_CMD_SET_REG,
14582                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14583                 .doit = nl80211_set_reg,
14584                 .flags = GENL_ADMIN_PERM,
14585                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14586         },
14587 #endif
14588         {
14589                 .cmd = NL80211_CMD_REQ_SET_REG,
14590                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14591                 .doit = nl80211_req_set_reg,
14592                 .flags = GENL_ADMIN_PERM,
14593         },
14594         {
14595                 .cmd = NL80211_CMD_RELOAD_REGDB,
14596                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14597                 .doit = nl80211_reload_regdb,
14598                 .flags = GENL_ADMIN_PERM,
14599         },
14600         {
14601                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14602                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14603                 .doit = nl80211_get_mesh_config,
14604                 /* can be retrieved by unprivileged users */
14605                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14606                                   NL80211_FLAG_NEED_RTNL,
14607         },
14608         {
14609                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14610                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14611                 .doit = nl80211_update_mesh_config,
14612                 .flags = GENL_UNS_ADMIN_PERM,
14613                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14614                                   NL80211_FLAG_NEED_RTNL,
14615         },
14616         {
14617                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14618                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14619                 .doit = nl80211_trigger_scan,
14620                 .flags = GENL_UNS_ADMIN_PERM,
14621                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14622                                   NL80211_FLAG_NEED_RTNL,
14623         },
14624         {
14625                 .cmd = NL80211_CMD_ABORT_SCAN,
14626                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14627                 .doit = nl80211_abort_scan,
14628                 .flags = GENL_UNS_ADMIN_PERM,
14629                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14630                                   NL80211_FLAG_NEED_RTNL,
14631         },
14632         {
14633                 .cmd = NL80211_CMD_GET_SCAN,
14634                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14635                 .dumpit = nl80211_dump_scan,
14636         },
14637         {
14638                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14639                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14640                 .doit = nl80211_start_sched_scan,
14641                 .flags = GENL_UNS_ADMIN_PERM,
14642                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14643                                   NL80211_FLAG_NEED_RTNL,
14644         },
14645         {
14646                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14647                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14648                 .doit = nl80211_stop_sched_scan,
14649                 .flags = GENL_UNS_ADMIN_PERM,
14650                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14651                                   NL80211_FLAG_NEED_RTNL,
14652         },
14653         {
14654                 .cmd = NL80211_CMD_AUTHENTICATE,
14655                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14656                 .doit = nl80211_authenticate,
14657                 .flags = GENL_UNS_ADMIN_PERM,
14658                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14659                                   NL80211_FLAG_NEED_RTNL |
14660                                   NL80211_FLAG_CLEAR_SKB,
14661         },
14662         {
14663                 .cmd = NL80211_CMD_ASSOCIATE,
14664                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14665                 .doit = nl80211_associate,
14666                 .flags = GENL_UNS_ADMIN_PERM,
14667                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14668                                   NL80211_FLAG_NEED_RTNL |
14669                                   NL80211_FLAG_CLEAR_SKB,
14670         },
14671         {
14672                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14674                 .doit = nl80211_deauthenticate,
14675                 .flags = GENL_UNS_ADMIN_PERM,
14676                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14677                                   NL80211_FLAG_NEED_RTNL,
14678         },
14679         {
14680                 .cmd = NL80211_CMD_DISASSOCIATE,
14681                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682                 .doit = nl80211_disassociate,
14683                 .flags = GENL_UNS_ADMIN_PERM,
14684                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14685                                   NL80211_FLAG_NEED_RTNL,
14686         },
14687         {
14688                 .cmd = NL80211_CMD_JOIN_IBSS,
14689                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14690                 .doit = nl80211_join_ibss,
14691                 .flags = GENL_UNS_ADMIN_PERM,
14692                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14693                                   NL80211_FLAG_NEED_RTNL,
14694         },
14695         {
14696                 .cmd = NL80211_CMD_LEAVE_IBSS,
14697                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14698                 .doit = nl80211_leave_ibss,
14699                 .flags = GENL_UNS_ADMIN_PERM,
14700                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14701                                   NL80211_FLAG_NEED_RTNL,
14702         },
14703 #ifdef CONFIG_NL80211_TESTMODE
14704         {
14705                 .cmd = NL80211_CMD_TESTMODE,
14706                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14707                 .doit = nl80211_testmode_do,
14708                 .dumpit = nl80211_testmode_dump,
14709                 .flags = GENL_UNS_ADMIN_PERM,
14710                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14711                                   NL80211_FLAG_NEED_RTNL,
14712         },
14713 #endif
14714         {
14715                 .cmd = NL80211_CMD_CONNECT,
14716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14717                 .doit = nl80211_connect,
14718                 .flags = GENL_UNS_ADMIN_PERM,
14719                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14720                                   NL80211_FLAG_NEED_RTNL |
14721                                   NL80211_FLAG_CLEAR_SKB,
14722         },
14723         {
14724                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14726                 .doit = nl80211_update_connect_params,
14727                 .flags = GENL_ADMIN_PERM,
14728                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14729                                   NL80211_FLAG_NEED_RTNL |
14730                                   NL80211_FLAG_CLEAR_SKB,
14731         },
14732         {
14733                 .cmd = NL80211_CMD_DISCONNECT,
14734                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14735                 .doit = nl80211_disconnect,
14736                 .flags = GENL_UNS_ADMIN_PERM,
14737                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14738                                   NL80211_FLAG_NEED_RTNL,
14739         },
14740         {
14741                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14742                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14743                 .doit = nl80211_wiphy_netns,
14744                 .flags = GENL_UNS_ADMIN_PERM,
14745                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14746                                   NL80211_FLAG_NEED_RTNL,
14747         },
14748         {
14749                 .cmd = NL80211_CMD_GET_SURVEY,
14750                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14751                 .dumpit = nl80211_dump_survey,
14752         },
14753         {
14754                 .cmd = NL80211_CMD_SET_PMKSA,
14755                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14756                 .doit = nl80211_setdel_pmksa,
14757                 .flags = GENL_UNS_ADMIN_PERM,
14758                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14759                                   NL80211_FLAG_NEED_RTNL |
14760                                   NL80211_FLAG_CLEAR_SKB,
14761         },
14762         {
14763                 .cmd = NL80211_CMD_DEL_PMKSA,
14764                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14765                 .doit = nl80211_setdel_pmksa,
14766                 .flags = GENL_UNS_ADMIN_PERM,
14767                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14768                                   NL80211_FLAG_NEED_RTNL,
14769         },
14770         {
14771                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14772                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14773                 .doit = nl80211_flush_pmksa,
14774                 .flags = GENL_UNS_ADMIN_PERM,
14775                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14776                                   NL80211_FLAG_NEED_RTNL,
14777         },
14778         {
14779                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14780                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14781                 .doit = nl80211_remain_on_channel,
14782                 .flags = GENL_UNS_ADMIN_PERM,
14783                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14784                                   NL80211_FLAG_NEED_RTNL,
14785         },
14786         {
14787                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14788                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14789                 .doit = nl80211_cancel_remain_on_channel,
14790                 .flags = GENL_UNS_ADMIN_PERM,
14791                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14792                                   NL80211_FLAG_NEED_RTNL,
14793         },
14794         {
14795                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14796                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14797                 .doit = nl80211_set_tx_bitrate_mask,
14798                 .flags = GENL_UNS_ADMIN_PERM,
14799                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14800                                   NL80211_FLAG_NEED_RTNL,
14801         },
14802         {
14803                 .cmd = NL80211_CMD_REGISTER_FRAME,
14804                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14805                 .doit = nl80211_register_mgmt,
14806                 .flags = GENL_UNS_ADMIN_PERM,
14807                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14808                                   NL80211_FLAG_NEED_RTNL,
14809         },
14810         {
14811                 .cmd = NL80211_CMD_FRAME,
14812                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14813                 .doit = nl80211_tx_mgmt,
14814                 .flags = GENL_UNS_ADMIN_PERM,
14815                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14816                                   NL80211_FLAG_NEED_RTNL,
14817         },
14818         {
14819                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14820                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14821                 .doit = nl80211_tx_mgmt_cancel_wait,
14822                 .flags = GENL_UNS_ADMIN_PERM,
14823                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14824                                   NL80211_FLAG_NEED_RTNL,
14825         },
14826         {
14827                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14828                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14829                 .doit = nl80211_set_power_save,
14830                 .flags = GENL_UNS_ADMIN_PERM,
14831                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14832                                   NL80211_FLAG_NEED_RTNL,
14833         },
14834         {
14835                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14836                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14837                 .doit = nl80211_get_power_save,
14838                 /* can be retrieved by unprivileged users */
14839                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14840                                   NL80211_FLAG_NEED_RTNL,
14841         },
14842         {
14843                 .cmd = NL80211_CMD_SET_CQM,
14844                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14845                 .doit = nl80211_set_cqm,
14846                 .flags = GENL_UNS_ADMIN_PERM,
14847                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14848                                   NL80211_FLAG_NEED_RTNL,
14849         },
14850         {
14851                 .cmd = NL80211_CMD_SET_CHANNEL,
14852                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14853                 .doit = nl80211_set_channel,
14854                 .flags = GENL_UNS_ADMIN_PERM,
14855                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14856                                   NL80211_FLAG_NEED_RTNL,
14857         },
14858         {
14859                 .cmd = NL80211_CMD_SET_WDS_PEER,
14860                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14861                 .doit = nl80211_set_wds_peer,
14862                 .flags = GENL_UNS_ADMIN_PERM,
14863                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14864                                   NL80211_FLAG_NEED_RTNL,
14865         },
14866         {
14867                 .cmd = NL80211_CMD_JOIN_MESH,
14868                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14869                 .doit = nl80211_join_mesh,
14870                 .flags = GENL_UNS_ADMIN_PERM,
14871                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14872                                   NL80211_FLAG_NEED_RTNL,
14873         },
14874         {
14875                 .cmd = NL80211_CMD_LEAVE_MESH,
14876                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14877                 .doit = nl80211_leave_mesh,
14878                 .flags = GENL_UNS_ADMIN_PERM,
14879                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14880                                   NL80211_FLAG_NEED_RTNL,
14881         },
14882         {
14883                 .cmd = NL80211_CMD_JOIN_OCB,
14884                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14885                 .doit = nl80211_join_ocb,
14886                 .flags = GENL_UNS_ADMIN_PERM,
14887                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14888                                   NL80211_FLAG_NEED_RTNL,
14889         },
14890         {
14891                 .cmd = NL80211_CMD_LEAVE_OCB,
14892                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14893                 .doit = nl80211_leave_ocb,
14894                 .flags = GENL_UNS_ADMIN_PERM,
14895                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14896                                   NL80211_FLAG_NEED_RTNL,
14897         },
14898 #ifdef CONFIG_PM
14899         {
14900                 .cmd = NL80211_CMD_GET_WOWLAN,
14901                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14902                 .doit = nl80211_get_wowlan,
14903                 /* can be retrieved by unprivileged users */
14904                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14905                                   NL80211_FLAG_NEED_RTNL,
14906         },
14907         {
14908                 .cmd = NL80211_CMD_SET_WOWLAN,
14909                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14910                 .doit = nl80211_set_wowlan,
14911                 .flags = GENL_UNS_ADMIN_PERM,
14912                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14913                                   NL80211_FLAG_NEED_RTNL,
14914         },
14915 #endif
14916         {
14917                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14918                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14919                 .doit = nl80211_set_rekey_data,
14920                 .flags = GENL_UNS_ADMIN_PERM,
14921                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14922                                   NL80211_FLAG_NEED_RTNL |
14923                                   NL80211_FLAG_CLEAR_SKB,
14924         },
14925         {
14926                 .cmd = NL80211_CMD_TDLS_MGMT,
14927                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14928                 .doit = nl80211_tdls_mgmt,
14929                 .flags = GENL_UNS_ADMIN_PERM,
14930                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14931                                   NL80211_FLAG_NEED_RTNL,
14932         },
14933         {
14934                 .cmd = NL80211_CMD_TDLS_OPER,
14935                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14936                 .doit = nl80211_tdls_oper,
14937                 .flags = GENL_UNS_ADMIN_PERM,
14938                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14939                                   NL80211_FLAG_NEED_RTNL,
14940         },
14941         {
14942                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14943                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14944                 .doit = nl80211_register_unexpected_frame,
14945                 .flags = GENL_UNS_ADMIN_PERM,
14946                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14947                                   NL80211_FLAG_NEED_RTNL,
14948         },
14949         {
14950                 .cmd = NL80211_CMD_PROBE_CLIENT,
14951                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14952                 .doit = nl80211_probe_client,
14953                 .flags = GENL_UNS_ADMIN_PERM,
14954                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14955                                   NL80211_FLAG_NEED_RTNL,
14956         },
14957         {
14958                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14959                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14960                 .doit = nl80211_register_beacons,
14961                 .flags = GENL_UNS_ADMIN_PERM,
14962                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14963                                   NL80211_FLAG_NEED_RTNL,
14964         },
14965         {
14966                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14967                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14968                 .doit = nl80211_set_noack_map,
14969                 .flags = GENL_UNS_ADMIN_PERM,
14970                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14971                                   NL80211_FLAG_NEED_RTNL,
14972         },
14973         {
14974                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14976                 .doit = nl80211_start_p2p_device,
14977                 .flags = GENL_UNS_ADMIN_PERM,
14978                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14979                                   NL80211_FLAG_NEED_RTNL,
14980         },
14981         {
14982                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14983                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14984                 .doit = nl80211_stop_p2p_device,
14985                 .flags = GENL_UNS_ADMIN_PERM,
14986                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14987                                   NL80211_FLAG_NEED_RTNL,
14988         },
14989         {
14990                 .cmd = NL80211_CMD_START_NAN,
14991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14992                 .doit = nl80211_start_nan,
14993                 .flags = GENL_ADMIN_PERM,
14994                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14995                                   NL80211_FLAG_NEED_RTNL,
14996         },
14997         {
14998                 .cmd = NL80211_CMD_STOP_NAN,
14999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15000                 .doit = nl80211_stop_nan,
15001                 .flags = GENL_ADMIN_PERM,
15002                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15003                                   NL80211_FLAG_NEED_RTNL,
15004         },
15005         {
15006                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15008                 .doit = nl80211_nan_add_func,
15009                 .flags = GENL_ADMIN_PERM,
15010                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15011                                   NL80211_FLAG_NEED_RTNL,
15012         },
15013         {
15014                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15015                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15016                 .doit = nl80211_nan_del_func,
15017                 .flags = GENL_ADMIN_PERM,
15018                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15019                                   NL80211_FLAG_NEED_RTNL,
15020         },
15021         {
15022                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15023                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15024                 .doit = nl80211_nan_change_config,
15025                 .flags = GENL_ADMIN_PERM,
15026                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15027                                   NL80211_FLAG_NEED_RTNL,
15028         },
15029         {
15030                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15031                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15032                 .doit = nl80211_set_mcast_rate,
15033                 .flags = GENL_UNS_ADMIN_PERM,
15034                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15035                                   NL80211_FLAG_NEED_RTNL,
15036         },
15037         {
15038                 .cmd = NL80211_CMD_SET_MAC_ACL,
15039                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15040                 .doit = nl80211_set_mac_acl,
15041                 .flags = GENL_UNS_ADMIN_PERM,
15042                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15043                                   NL80211_FLAG_NEED_RTNL,
15044         },
15045         {
15046                 .cmd = NL80211_CMD_RADAR_DETECT,
15047                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15048                 .doit = nl80211_start_radar_detection,
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_GET_PROTOCOL_FEATURES,
15055                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15056                 .doit = nl80211_get_protocol_features,
15057         },
15058         {
15059                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15060                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15061                 .doit = nl80211_update_ft_ies,
15062                 .flags = GENL_UNS_ADMIN_PERM,
15063                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15064                                   NL80211_FLAG_NEED_RTNL,
15065         },
15066         {
15067                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15068                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15069                 .doit = nl80211_crit_protocol_start,
15070                 .flags = GENL_UNS_ADMIN_PERM,
15071                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15072                                   NL80211_FLAG_NEED_RTNL,
15073         },
15074         {
15075                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15076                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15077                 .doit = nl80211_crit_protocol_stop,
15078                 .flags = GENL_UNS_ADMIN_PERM,
15079                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15080                                   NL80211_FLAG_NEED_RTNL,
15081         },
15082         {
15083                 .cmd = NL80211_CMD_GET_COALESCE,
15084                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15085                 .doit = nl80211_get_coalesce,
15086                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15087                                   NL80211_FLAG_NEED_RTNL,
15088         },
15089         {
15090                 .cmd = NL80211_CMD_SET_COALESCE,
15091                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15092                 .doit = nl80211_set_coalesce,
15093                 .flags = GENL_UNS_ADMIN_PERM,
15094                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15095                                   NL80211_FLAG_NEED_RTNL,
15096         },
15097         {
15098                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15099                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15100                 .doit = nl80211_channel_switch,
15101                 .flags = GENL_UNS_ADMIN_PERM,
15102                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15103                                   NL80211_FLAG_NEED_RTNL,
15104         },
15105         {
15106                 .cmd = NL80211_CMD_VENDOR,
15107                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15108                 .doit = nl80211_vendor_cmd,
15109                 .dumpit = nl80211_vendor_cmd_dump,
15110                 .flags = GENL_UNS_ADMIN_PERM,
15111                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15112                                   NL80211_FLAG_NEED_RTNL |
15113                                   NL80211_FLAG_CLEAR_SKB,
15114         },
15115         {
15116                 .cmd = NL80211_CMD_SET_QOS_MAP,
15117                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15118                 .doit = nl80211_set_qos_map,
15119                 .flags = GENL_UNS_ADMIN_PERM,
15120                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15121                                   NL80211_FLAG_NEED_RTNL,
15122         },
15123         {
15124                 .cmd = NL80211_CMD_ADD_TX_TS,
15125                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15126                 .doit = nl80211_add_tx_ts,
15127                 .flags = GENL_UNS_ADMIN_PERM,
15128                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15129                                   NL80211_FLAG_NEED_RTNL,
15130         },
15131         {
15132                 .cmd = NL80211_CMD_DEL_TX_TS,
15133                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15134                 .doit = nl80211_del_tx_ts,
15135                 .flags = GENL_UNS_ADMIN_PERM,
15136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15137                                   NL80211_FLAG_NEED_RTNL,
15138         },
15139         {
15140                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15141                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15142                 .doit = nl80211_tdls_channel_switch,
15143                 .flags = GENL_UNS_ADMIN_PERM,
15144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15145                                   NL80211_FLAG_NEED_RTNL,
15146         },
15147         {
15148                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15149                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15150                 .doit = nl80211_tdls_cancel_channel_switch,
15151                 .flags = GENL_UNS_ADMIN_PERM,
15152                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15153                                   NL80211_FLAG_NEED_RTNL,
15154         },
15155         {
15156                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15157                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15158                 .doit = nl80211_set_multicast_to_unicast,
15159                 .flags = GENL_UNS_ADMIN_PERM,
15160                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15161                                   NL80211_FLAG_NEED_RTNL,
15162         },
15163         {
15164                 .cmd = NL80211_CMD_SET_PMK,
15165                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15166                 .doit = nl80211_set_pmk,
15167                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15168                                   NL80211_FLAG_NEED_RTNL |
15169                                   NL80211_FLAG_CLEAR_SKB,
15170         },
15171         {
15172                 .cmd = NL80211_CMD_DEL_PMK,
15173                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15174                 .doit = nl80211_del_pmk,
15175                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15176                                   NL80211_FLAG_NEED_RTNL,
15177         },
15178         {
15179                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15181                 .doit = nl80211_external_auth,
15182                 .flags = GENL_ADMIN_PERM,
15183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15184                                   NL80211_FLAG_NEED_RTNL,
15185         },
15186         {
15187                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15188                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15189                 .doit = nl80211_tx_control_port,
15190                 .flags = GENL_UNS_ADMIN_PERM,
15191                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15192                                   NL80211_FLAG_NEED_RTNL,
15193         },
15194         {
15195                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15196                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15197                 .doit = nl80211_get_ftm_responder_stats,
15198                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15199                                   NL80211_FLAG_NEED_RTNL,
15200         },
15201         {
15202                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15203                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15204                 .doit = nl80211_pmsr_start,
15205                 .flags = GENL_UNS_ADMIN_PERM,
15206                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15207                                   NL80211_FLAG_NEED_RTNL,
15208         },
15209         {
15210                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15211                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15212                 .doit = nl80211_notify_radar_detection,
15213                 .flags = GENL_UNS_ADMIN_PERM,
15214                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15215                                   NL80211_FLAG_NEED_RTNL,
15216         },
15217         {
15218                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15219                 .doit = nl80211_update_owe_info,
15220                 .flags = GENL_ADMIN_PERM,
15221                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15222                                   NL80211_FLAG_NEED_RTNL,
15223         },
15224         {
15225                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15226                 .doit = nl80211_probe_mesh_link,
15227                 .flags = GENL_UNS_ADMIN_PERM,
15228                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15229                                   NL80211_FLAG_NEED_RTNL,
15230         },
15231         {
15232                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15233                 .doit = nl80211_set_tid_config,
15234                 .flags = GENL_UNS_ADMIN_PERM,
15235                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15236                                   NL80211_FLAG_NEED_RTNL,
15237         },
15238 };
15239
15240 static struct genl_family nl80211_fam __ro_after_init = {
15241         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15242         .hdrsize = 0,                   /* no private header */
15243         .version = 1,                   /* no particular meaning now */
15244         .maxattr = NL80211_ATTR_MAX,
15245         .policy = nl80211_policy,
15246         .netnsok = true,
15247         .pre_doit = nl80211_pre_doit,
15248         .post_doit = nl80211_post_doit,
15249         .module = THIS_MODULE,
15250         .ops = nl80211_ops,
15251         .n_ops = ARRAY_SIZE(nl80211_ops),
15252         .mcgrps = nl80211_mcgrps,
15253         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15254         .parallel_ops = true,
15255 };
15256
15257 /* notification functions */
15258
15259 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15260                           enum nl80211_commands cmd)
15261 {
15262         struct sk_buff *msg;
15263         struct nl80211_dump_wiphy_state state = {};
15264
15265         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15266                 cmd != NL80211_CMD_DEL_WIPHY);
15267
15268         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15269         if (!msg)
15270                 return;
15271
15272         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15273                 nlmsg_free(msg);
15274                 return;
15275         }
15276
15277         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15278                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15279 }
15280
15281 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15282                                 struct wireless_dev *wdev,
15283                                 enum nl80211_commands cmd)
15284 {
15285         struct sk_buff *msg;
15286
15287         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15288         if (!msg)
15289                 return;
15290
15291         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15292                 nlmsg_free(msg);
15293                 return;
15294         }
15295
15296         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15297                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15298 }
15299
15300 static int nl80211_add_scan_req(struct sk_buff *msg,
15301                                 struct cfg80211_registered_device *rdev)
15302 {
15303         struct cfg80211_scan_request *req = rdev->scan_req;
15304         struct nlattr *nest;
15305         int i;
15306
15307         if (WARN_ON(!req))
15308                 return 0;
15309
15310         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15311         if (!nest)
15312                 goto nla_put_failure;
15313         for (i = 0; i < req->n_ssids; i++) {
15314                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15315                         goto nla_put_failure;
15316         }
15317         nla_nest_end(msg, nest);
15318
15319         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15320                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15321                 if (!nest)
15322                         goto nla_put_failure;
15323                 for (i = 0; i < req->n_channels; i++) {
15324                         if (nla_put_u32(msg, i,
15325                                    ieee80211_channel_to_khz(req->channels[i])))
15326                                 goto nla_put_failure;
15327                 }
15328                 nla_nest_end(msg, nest);
15329         } else {
15330                 nest = nla_nest_start_noflag(msg,
15331                                              NL80211_ATTR_SCAN_FREQUENCIES);
15332                 if (!nest)
15333                         goto nla_put_failure;
15334                 for (i = 0; i < req->n_channels; i++) {
15335                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15336                                 goto nla_put_failure;
15337                 }
15338                 nla_nest_end(msg, nest);
15339         }
15340
15341         if (req->ie &&
15342             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15343                 goto nla_put_failure;
15344
15345         if (req->flags &&
15346             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15347                 goto nla_put_failure;
15348
15349         if (req->info.scan_start_tsf &&
15350             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15351                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15352              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15353                      req->info.tsf_bssid)))
15354                 goto nla_put_failure;
15355
15356         return 0;
15357  nla_put_failure:
15358         return -ENOBUFS;
15359 }
15360
15361 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15362                                  struct cfg80211_registered_device *rdev,
15363                                  struct wireless_dev *wdev,
15364                                  u32 portid, u32 seq, int flags,
15365                                  u32 cmd)
15366 {
15367         void *hdr;
15368
15369         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15370         if (!hdr)
15371                 return -1;
15372
15373         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15374             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15375                                          wdev->netdev->ifindex)) ||
15376             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15377                               NL80211_ATTR_PAD))
15378                 goto nla_put_failure;
15379
15380         /* ignore errors and send incomplete event anyway */
15381         nl80211_add_scan_req(msg, rdev);
15382
15383         genlmsg_end(msg, hdr);
15384         return 0;
15385
15386  nla_put_failure:
15387         genlmsg_cancel(msg, hdr);
15388         return -EMSGSIZE;
15389 }
15390
15391 static int
15392 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15393                             struct cfg80211_sched_scan_request *req, u32 cmd)
15394 {
15395         void *hdr;
15396
15397         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15398         if (!hdr)
15399                 return -1;
15400
15401         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15402                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15403             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15404             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15405                               NL80211_ATTR_PAD))
15406                 goto nla_put_failure;
15407
15408         genlmsg_end(msg, hdr);
15409         return 0;
15410
15411  nla_put_failure:
15412         genlmsg_cancel(msg, hdr);
15413         return -EMSGSIZE;
15414 }
15415
15416 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15417                              struct wireless_dev *wdev)
15418 {
15419         struct sk_buff *msg;
15420
15421         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15422         if (!msg)
15423                 return;
15424
15425         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15426                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15427                 nlmsg_free(msg);
15428                 return;
15429         }
15430
15431         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15432                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15433 }
15434
15435 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15436                                        struct wireless_dev *wdev, bool aborted)
15437 {
15438         struct sk_buff *msg;
15439
15440         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15441         if (!msg)
15442                 return NULL;
15443
15444         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15445                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15446                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15447                 nlmsg_free(msg);
15448                 return NULL;
15449         }
15450
15451         return msg;
15452 }
15453
15454 /* send message created by nl80211_build_scan_msg() */
15455 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15456                            struct sk_buff *msg)
15457 {
15458         if (!msg)
15459                 return;
15460
15461         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15462                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15463 }
15464
15465 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15466 {
15467         struct sk_buff *msg;
15468
15469         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15470         if (!msg)
15471                 return;
15472
15473         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15474                 nlmsg_free(msg);
15475                 return;
15476         }
15477
15478         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15479                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15480 }
15481
15482 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15483                                           struct regulatory_request *request)
15484 {
15485         /* Userspace can always count this one always being set */
15486         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15487                 goto nla_put_failure;
15488
15489         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15490                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15491                                NL80211_REGDOM_TYPE_WORLD))
15492                         goto nla_put_failure;
15493         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15494                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15495                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15496                         goto nla_put_failure;
15497         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15498                    request->intersect) {
15499                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15500                                NL80211_REGDOM_TYPE_INTERSECTION))
15501                         goto nla_put_failure;
15502         } else {
15503                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15504                                NL80211_REGDOM_TYPE_COUNTRY) ||
15505                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15506                                    request->alpha2))
15507                         goto nla_put_failure;
15508         }
15509
15510         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15511                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15512
15513                 if (wiphy &&
15514                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15515                         goto nla_put_failure;
15516
15517                 if (wiphy &&
15518                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15519                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15520                         goto nla_put_failure;
15521         }
15522
15523         return true;
15524
15525 nla_put_failure:
15526         return false;
15527 }
15528
15529 /*
15530  * This can happen on global regulatory changes or device specific settings
15531  * based on custom regulatory domains.
15532  */
15533 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15534                                      struct regulatory_request *request)
15535 {
15536         struct sk_buff *msg;
15537         void *hdr;
15538
15539         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15540         if (!msg)
15541                 return;
15542
15543         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15544         if (!hdr)
15545                 goto nla_put_failure;
15546
15547         if (!nl80211_reg_change_event_fill(msg, request))
15548                 goto nla_put_failure;
15549
15550         genlmsg_end(msg, hdr);
15551
15552         rcu_read_lock();
15553         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15554                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15555         rcu_read_unlock();
15556
15557         return;
15558
15559 nla_put_failure:
15560         nlmsg_free(msg);
15561 }
15562
15563 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15564                                     struct net_device *netdev,
15565                                     const u8 *buf, size_t len,
15566                                     enum nl80211_commands cmd, gfp_t gfp,
15567                                     int uapsd_queues, const u8 *req_ies,
15568                                     size_t req_ies_len)
15569 {
15570         struct sk_buff *msg;
15571         void *hdr;
15572
15573         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15574         if (!msg)
15575                 return;
15576
15577         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15578         if (!hdr) {
15579                 nlmsg_free(msg);
15580                 return;
15581         }
15582
15583         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15584             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15585             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15586             (req_ies &&
15587              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15588                 goto nla_put_failure;
15589
15590         if (uapsd_queues >= 0) {
15591                 struct nlattr *nla_wmm =
15592                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15593                 if (!nla_wmm)
15594                         goto nla_put_failure;
15595
15596                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15597                                uapsd_queues))
15598                         goto nla_put_failure;
15599
15600                 nla_nest_end(msg, nla_wmm);
15601         }
15602
15603         genlmsg_end(msg, hdr);
15604
15605         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15606                                 NL80211_MCGRP_MLME, gfp);
15607         return;
15608
15609  nla_put_failure:
15610         nlmsg_free(msg);
15611 }
15612
15613 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15614                           struct net_device *netdev, const u8 *buf,
15615                           size_t len, gfp_t gfp)
15616 {
15617         nl80211_send_mlme_event(rdev, netdev, buf, len,
15618                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15619 }
15620
15621 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15622                            struct net_device *netdev, const u8 *buf,
15623                            size_t len, gfp_t gfp, int uapsd_queues,
15624                            const u8 *req_ies, size_t req_ies_len)
15625 {
15626         nl80211_send_mlme_event(rdev, netdev, buf, len,
15627                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15628                                 req_ies, req_ies_len);
15629 }
15630
15631 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15632                          struct net_device *netdev, const u8 *buf,
15633                          size_t len, gfp_t gfp)
15634 {
15635         nl80211_send_mlme_event(rdev, netdev, buf, len,
15636                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15637 }
15638
15639 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15640                            struct net_device *netdev, const u8 *buf,
15641                            size_t len, gfp_t gfp)
15642 {
15643         nl80211_send_mlme_event(rdev, netdev, buf, len,
15644                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15645 }
15646
15647 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15648                                   size_t len)
15649 {
15650         struct wireless_dev *wdev = dev->ieee80211_ptr;
15651         struct wiphy *wiphy = wdev->wiphy;
15652         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15653         const struct ieee80211_mgmt *mgmt = (void *)buf;
15654         u32 cmd;
15655
15656         if (WARN_ON(len < 2))
15657                 return;
15658
15659         if (ieee80211_is_deauth(mgmt->frame_control)) {
15660                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15661         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15662                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15663         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15664                 if (wdev->unprot_beacon_reported &&
15665                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15666                         return;
15667                 cmd = NL80211_CMD_UNPROT_BEACON;
15668                 wdev->unprot_beacon_reported = jiffies;
15669         } else {
15670                 return;
15671         }
15672
15673         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15674         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15675                                 NULL, 0);
15676 }
15677 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15678
15679 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15680                                       struct net_device *netdev, int cmd,
15681                                       const u8 *addr, gfp_t gfp)
15682 {
15683         struct sk_buff *msg;
15684         void *hdr;
15685
15686         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15687         if (!msg)
15688                 return;
15689
15690         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15691         if (!hdr) {
15692                 nlmsg_free(msg);
15693                 return;
15694         }
15695
15696         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15697             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15698             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15699             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15700                 goto nla_put_failure;
15701
15702         genlmsg_end(msg, hdr);
15703
15704         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15705                                 NL80211_MCGRP_MLME, gfp);
15706         return;
15707
15708  nla_put_failure:
15709         nlmsg_free(msg);
15710 }
15711
15712 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15713                                struct net_device *netdev, const u8 *addr,
15714                                gfp_t gfp)
15715 {
15716         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15717                                   addr, gfp);
15718 }
15719
15720 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15721                                 struct net_device *netdev, const u8 *addr,
15722                                 gfp_t gfp)
15723 {
15724         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15725                                   addr, gfp);
15726 }
15727
15728 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15729                                  struct net_device *netdev,
15730                                  struct cfg80211_connect_resp_params *cr,
15731                                  gfp_t gfp)
15732 {
15733         struct sk_buff *msg;
15734         void *hdr;
15735
15736         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15737                         cr->fils.kek_len + cr->fils.pmk_len +
15738                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15739         if (!msg)
15740                 return;
15741
15742         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15743         if (!hdr) {
15744                 nlmsg_free(msg);
15745                 return;
15746         }
15747
15748         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15749             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15750             (cr->bssid &&
15751              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15752             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15753                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15754                         cr->status) ||
15755             (cr->status < 0 &&
15756              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15757               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15758                           cr->timeout_reason))) ||
15759             (cr->req_ie &&
15760              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15761             (cr->resp_ie &&
15762              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15763                      cr->resp_ie)) ||
15764             (cr->fils.update_erp_next_seq_num &&
15765              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15766                          cr->fils.erp_next_seq_num)) ||
15767             (cr->status == WLAN_STATUS_SUCCESS &&
15768              ((cr->fils.kek &&
15769                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15770                        cr->fils.kek)) ||
15771               (cr->fils.pmk &&
15772                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15773               (cr->fils.pmkid &&
15774                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15775                 goto nla_put_failure;
15776
15777         genlmsg_end(msg, hdr);
15778
15779         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15780                                 NL80211_MCGRP_MLME, gfp);
15781         return;
15782
15783  nla_put_failure:
15784         nlmsg_free(msg);
15785 }
15786
15787 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15788                          struct net_device *netdev,
15789                          struct cfg80211_roam_info *info, gfp_t gfp)
15790 {
15791         struct sk_buff *msg;
15792         void *hdr;
15793         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15794
15795         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15796                         info->fils.kek_len + info->fils.pmk_len +
15797                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15798         if (!msg)
15799                 return;
15800
15801         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15802         if (!hdr) {
15803                 nlmsg_free(msg);
15804                 return;
15805         }
15806
15807         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15808             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15809             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15810             (info->req_ie &&
15811              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15812                      info->req_ie)) ||
15813             (info->resp_ie &&
15814              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15815                      info->resp_ie)) ||
15816             (info->fils.update_erp_next_seq_num &&
15817              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15818                          info->fils.erp_next_seq_num)) ||
15819             (info->fils.kek &&
15820              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15821                      info->fils.kek)) ||
15822             (info->fils.pmk &&
15823              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15824             (info->fils.pmkid &&
15825              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15826                 goto nla_put_failure;
15827
15828         genlmsg_end(msg, hdr);
15829
15830         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15831                                 NL80211_MCGRP_MLME, gfp);
15832         return;
15833
15834  nla_put_failure:
15835         nlmsg_free(msg);
15836 }
15837
15838 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15839                                   struct net_device *netdev, const u8 *bssid)
15840 {
15841         struct sk_buff *msg;
15842         void *hdr;
15843
15844         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15845         if (!msg)
15846                 return;
15847
15848         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15849         if (!hdr) {
15850                 nlmsg_free(msg);
15851                 return;
15852         }
15853
15854         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15855             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15856             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15857                 goto nla_put_failure;
15858
15859         genlmsg_end(msg, hdr);
15860
15861         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15862                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15863         return;
15864
15865  nla_put_failure:
15866         nlmsg_free(msg);
15867 }
15868
15869 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15870                                struct net_device *netdev, u16 reason,
15871                                const u8 *ie, size_t ie_len, bool from_ap)
15872 {
15873         struct sk_buff *msg;
15874         void *hdr;
15875
15876         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15877         if (!msg)
15878                 return;
15879
15880         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15881         if (!hdr) {
15882                 nlmsg_free(msg);
15883                 return;
15884         }
15885
15886         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15887             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15888             (reason &&
15889              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15890             (from_ap &&
15891              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15892             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15893                 goto nla_put_failure;
15894
15895         genlmsg_end(msg, hdr);
15896
15897         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15898                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15899         return;
15900
15901  nla_put_failure:
15902         nlmsg_free(msg);
15903 }
15904
15905 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15906                              struct net_device *netdev, const u8 *bssid,
15907                              gfp_t gfp)
15908 {
15909         struct sk_buff *msg;
15910         void *hdr;
15911
15912         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15913         if (!msg)
15914                 return;
15915
15916         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15917         if (!hdr) {
15918                 nlmsg_free(msg);
15919                 return;
15920         }
15921
15922         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15923             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15924             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15925                 goto nla_put_failure;
15926
15927         genlmsg_end(msg, hdr);
15928
15929         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15930                                 NL80211_MCGRP_MLME, gfp);
15931         return;
15932
15933  nla_put_failure:
15934         nlmsg_free(msg);
15935 }
15936
15937 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15938                                         const u8 *ie, u8 ie_len,
15939                                         int sig_dbm, gfp_t gfp)
15940 {
15941         struct wireless_dev *wdev = dev->ieee80211_ptr;
15942         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15943         struct sk_buff *msg;
15944         void *hdr;
15945
15946         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15947                 return;
15948
15949         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15950
15951         msg = nlmsg_new(100 + ie_len, gfp);
15952         if (!msg)
15953                 return;
15954
15955         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15956         if (!hdr) {
15957                 nlmsg_free(msg);
15958                 return;
15959         }
15960
15961         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15962             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15963             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15964             (ie_len && ie &&
15965              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15966             (sig_dbm &&
15967              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15968                 goto nla_put_failure;
15969
15970         genlmsg_end(msg, hdr);
15971
15972         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15973                                 NL80211_MCGRP_MLME, gfp);
15974         return;
15975
15976  nla_put_failure:
15977         nlmsg_free(msg);
15978 }
15979 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15980
15981 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15982                                  struct net_device *netdev, const u8 *addr,
15983                                  enum nl80211_key_type key_type, int key_id,
15984                                  const u8 *tsc, gfp_t gfp)
15985 {
15986         struct sk_buff *msg;
15987         void *hdr;
15988
15989         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15990         if (!msg)
15991                 return;
15992
15993         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15994         if (!hdr) {
15995                 nlmsg_free(msg);
15996                 return;
15997         }
15998
15999         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16000             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16001             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16002             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16003             (key_id != -1 &&
16004              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16005             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16006                 goto nla_put_failure;
16007
16008         genlmsg_end(msg, hdr);
16009
16010         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16011                                 NL80211_MCGRP_MLME, gfp);
16012         return;
16013
16014  nla_put_failure:
16015         nlmsg_free(msg);
16016 }
16017
16018 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16019                                     struct ieee80211_channel *channel_before,
16020                                     struct ieee80211_channel *channel_after)
16021 {
16022         struct sk_buff *msg;
16023         void *hdr;
16024         struct nlattr *nl_freq;
16025
16026         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16027         if (!msg)
16028                 return;
16029
16030         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16031         if (!hdr) {
16032                 nlmsg_free(msg);
16033                 return;
16034         }
16035
16036         /*
16037          * Since we are applying the beacon hint to a wiphy we know its
16038          * wiphy_idx is valid
16039          */
16040         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16041                 goto nla_put_failure;
16042
16043         /* Before */
16044         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16045         if (!nl_freq)
16046                 goto nla_put_failure;
16047
16048         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16049                 goto nla_put_failure;
16050         nla_nest_end(msg, nl_freq);
16051
16052         /* After */
16053         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16054         if (!nl_freq)
16055                 goto nla_put_failure;
16056
16057         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16058                 goto nla_put_failure;
16059         nla_nest_end(msg, nl_freq);
16060
16061         genlmsg_end(msg, hdr);
16062
16063         rcu_read_lock();
16064         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16065                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16066         rcu_read_unlock();
16067
16068         return;
16069
16070 nla_put_failure:
16071         nlmsg_free(msg);
16072 }
16073
16074 static void nl80211_send_remain_on_chan_event(
16075         int cmd, struct cfg80211_registered_device *rdev,
16076         struct wireless_dev *wdev, u64 cookie,
16077         struct ieee80211_channel *chan,
16078         unsigned int duration, gfp_t gfp)
16079 {
16080         struct sk_buff *msg;
16081         void *hdr;
16082
16083         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16084         if (!msg)
16085                 return;
16086
16087         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16088         if (!hdr) {
16089                 nlmsg_free(msg);
16090                 return;
16091         }
16092
16093         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16094             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16095                                          wdev->netdev->ifindex)) ||
16096             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16097                               NL80211_ATTR_PAD) ||
16098             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16099             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16100                         NL80211_CHAN_NO_HT) ||
16101             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16102                               NL80211_ATTR_PAD))
16103                 goto nla_put_failure;
16104
16105         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16106             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16107                 goto nla_put_failure;
16108
16109         genlmsg_end(msg, hdr);
16110
16111         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16112                                 NL80211_MCGRP_MLME, gfp);
16113         return;
16114
16115  nla_put_failure:
16116         nlmsg_free(msg);
16117 }
16118
16119 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16120                                struct ieee80211_channel *chan,
16121                                unsigned int duration, gfp_t gfp)
16122 {
16123         struct wiphy *wiphy = wdev->wiphy;
16124         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16125
16126         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16127         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16128                                           rdev, wdev, cookie, chan,
16129                                           duration, gfp);
16130 }
16131 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16132
16133 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16134                                         struct ieee80211_channel *chan,
16135                                         gfp_t gfp)
16136 {
16137         struct wiphy *wiphy = wdev->wiphy;
16138         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16139
16140         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16141         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16142                                           rdev, wdev, cookie, chan, 0, gfp);
16143 }
16144 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16145
16146 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16147                                         struct ieee80211_channel *chan,
16148                                         gfp_t gfp)
16149 {
16150         struct wiphy *wiphy = wdev->wiphy;
16151         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16152
16153         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16154         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16155                                           rdev, wdev, cookie, chan, 0, gfp);
16156 }
16157 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16158
16159 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16160                       struct station_info *sinfo, gfp_t gfp)
16161 {
16162         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16163         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16164         struct sk_buff *msg;
16165
16166         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16167
16168         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16169         if (!msg)
16170                 return;
16171
16172         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16173                                  rdev, dev, mac_addr, sinfo) < 0) {
16174                 nlmsg_free(msg);
16175                 return;
16176         }
16177
16178         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16179                                 NL80211_MCGRP_MLME, gfp);
16180 }
16181 EXPORT_SYMBOL(cfg80211_new_sta);
16182
16183 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16184                             struct station_info *sinfo, gfp_t gfp)
16185 {
16186         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16187         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16188         struct sk_buff *msg;
16189         struct station_info empty_sinfo = {};
16190
16191         if (!sinfo)
16192                 sinfo = &empty_sinfo;
16193
16194         trace_cfg80211_del_sta(dev, mac_addr);
16195
16196         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16197         if (!msg) {
16198                 cfg80211_sinfo_release_content(sinfo);
16199                 return;
16200         }
16201
16202         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16203                                  rdev, dev, mac_addr, sinfo) < 0) {
16204                 nlmsg_free(msg);
16205                 return;
16206         }
16207
16208         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16209                                 NL80211_MCGRP_MLME, gfp);
16210 }
16211 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16212
16213 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16214                           enum nl80211_connect_failed_reason reason,
16215                           gfp_t gfp)
16216 {
16217         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16218         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16219         struct sk_buff *msg;
16220         void *hdr;
16221
16222         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16223         if (!msg)
16224                 return;
16225
16226         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16227         if (!hdr) {
16228                 nlmsg_free(msg);
16229                 return;
16230         }
16231
16232         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16233             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16234             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16235                 goto nla_put_failure;
16236
16237         genlmsg_end(msg, hdr);
16238
16239         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16240                                 NL80211_MCGRP_MLME, gfp);
16241         return;
16242
16243  nla_put_failure:
16244         nlmsg_free(msg);
16245 }
16246 EXPORT_SYMBOL(cfg80211_conn_failed);
16247
16248 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16249                                        const u8 *addr, gfp_t gfp)
16250 {
16251         struct wireless_dev *wdev = dev->ieee80211_ptr;
16252         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16253         struct sk_buff *msg;
16254         void *hdr;
16255         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16256
16257         if (!nlportid)
16258                 return false;
16259
16260         msg = nlmsg_new(100, gfp);
16261         if (!msg)
16262                 return true;
16263
16264         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16265         if (!hdr) {
16266                 nlmsg_free(msg);
16267                 return true;
16268         }
16269
16270         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16271             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16272             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16273                 goto nla_put_failure;
16274
16275         genlmsg_end(msg, hdr);
16276         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16277         return true;
16278
16279  nla_put_failure:
16280         nlmsg_free(msg);
16281         return true;
16282 }
16283
16284 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16285                                 const u8 *addr, gfp_t gfp)
16286 {
16287         struct wireless_dev *wdev = dev->ieee80211_ptr;
16288         bool ret;
16289
16290         trace_cfg80211_rx_spurious_frame(dev, addr);
16291
16292         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16293                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16294                 trace_cfg80211_return_bool(false);
16295                 return false;
16296         }
16297         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16298                                          addr, gfp);
16299         trace_cfg80211_return_bool(ret);
16300         return ret;
16301 }
16302 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16303
16304 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16305                                         const u8 *addr, gfp_t gfp)
16306 {
16307         struct wireless_dev *wdev = dev->ieee80211_ptr;
16308         bool ret;
16309
16310         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16311
16312         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16313                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16314                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16315                 trace_cfg80211_return_bool(false);
16316                 return false;
16317         }
16318         ret = __nl80211_unexpected_frame(dev,
16319                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16320                                          addr, gfp);
16321         trace_cfg80211_return_bool(ret);
16322         return ret;
16323 }
16324 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16325
16326 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16327                       struct wireless_dev *wdev, u32 nlportid,
16328                       int freq, int sig_dbm,
16329                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16330 {
16331         struct net_device *netdev = wdev->netdev;
16332         struct sk_buff *msg;
16333         void *hdr;
16334
16335         msg = nlmsg_new(100 + len, gfp);
16336         if (!msg)
16337                 return -ENOMEM;
16338
16339         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16340         if (!hdr) {
16341                 nlmsg_free(msg);
16342                 return -ENOMEM;
16343         }
16344
16345         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16346             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16347                                         netdev->ifindex)) ||
16348             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16349                               NL80211_ATTR_PAD) ||
16350             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16351             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16352             (sig_dbm &&
16353              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16354             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16355             (flags &&
16356              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16357                 goto nla_put_failure;
16358
16359         genlmsg_end(msg, hdr);
16360
16361         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16362
16363  nla_put_failure:
16364         nlmsg_free(msg);
16365         return -ENOBUFS;
16366 }
16367
16368 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16369                                     const u8 *buf, size_t len, bool ack,
16370                                     gfp_t gfp, enum nl80211_commands command)
16371 {
16372         struct wiphy *wiphy = wdev->wiphy;
16373         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16374         struct net_device *netdev = wdev->netdev;
16375         struct sk_buff *msg;
16376         void *hdr;
16377
16378         if (command == NL80211_CMD_FRAME_TX_STATUS)
16379                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16380         else
16381                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16382
16383         msg = nlmsg_new(100 + len, gfp);
16384         if (!msg)
16385                 return;
16386
16387         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16388         if (!hdr) {
16389                 nlmsg_free(msg);
16390                 return;
16391         }
16392
16393         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16394             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16395                                    netdev->ifindex)) ||
16396             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16397                               NL80211_ATTR_PAD) ||
16398             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16399             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16400                               NL80211_ATTR_PAD) ||
16401             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16402                 goto nla_put_failure;
16403
16404         genlmsg_end(msg, hdr);
16405
16406         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16407                                 NL80211_MCGRP_MLME, gfp);
16408         return;
16409
16410 nla_put_failure:
16411         nlmsg_free(msg);
16412 }
16413
16414 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16415                                      const u8 *buf, size_t len, bool ack,
16416                                      gfp_t gfp)
16417 {
16418         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16419                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16420 }
16421 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16422
16423 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16424                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16425 {
16426         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16427                                 NL80211_CMD_FRAME_TX_STATUS);
16428 }
16429 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16430
16431 static int __nl80211_rx_control_port(struct net_device *dev,
16432                                      struct sk_buff *skb,
16433                                      bool unencrypted, gfp_t gfp)
16434 {
16435         struct wireless_dev *wdev = dev->ieee80211_ptr;
16436         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16437         struct ethhdr *ehdr = eth_hdr(skb);
16438         const u8 *addr = ehdr->h_source;
16439         u16 proto = be16_to_cpu(skb->protocol);
16440         struct sk_buff *msg;
16441         void *hdr;
16442         struct nlattr *frame;
16443
16444         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16445
16446         if (!nlportid)
16447                 return -ENOENT;
16448
16449         msg = nlmsg_new(100 + skb->len, gfp);
16450         if (!msg)
16451                 return -ENOMEM;
16452
16453         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16454         if (!hdr) {
16455                 nlmsg_free(msg);
16456                 return -ENOBUFS;
16457         }
16458
16459         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16460             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16461             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16462                               NL80211_ATTR_PAD) ||
16463             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16464             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16465             (unencrypted && nla_put_flag(msg,
16466                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16467                 goto nla_put_failure;
16468
16469         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16470         if (!frame)
16471                 goto nla_put_failure;
16472
16473         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16474         genlmsg_end(msg, hdr);
16475
16476         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16477
16478  nla_put_failure:
16479         nlmsg_free(msg);
16480         return -ENOBUFS;
16481 }
16482
16483 bool cfg80211_rx_control_port(struct net_device *dev,
16484                               struct sk_buff *skb, bool unencrypted)
16485 {
16486         int ret;
16487
16488         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16489         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16490         trace_cfg80211_return_bool(ret == 0);
16491         return ret == 0;
16492 }
16493 EXPORT_SYMBOL(cfg80211_rx_control_port);
16494
16495 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16496                                             const char *mac, gfp_t gfp)
16497 {
16498         struct wireless_dev *wdev = dev->ieee80211_ptr;
16499         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16500         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16501         void **cb;
16502
16503         if (!msg)
16504                 return NULL;
16505
16506         cb = (void **)msg->cb;
16507
16508         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16509         if (!cb[0]) {
16510                 nlmsg_free(msg);
16511                 return NULL;
16512         }
16513
16514         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16515             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16516                 goto nla_put_failure;
16517
16518         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16519                 goto nla_put_failure;
16520
16521         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16522         if (!cb[1])
16523                 goto nla_put_failure;
16524
16525         cb[2] = rdev;
16526
16527         return msg;
16528  nla_put_failure:
16529         nlmsg_free(msg);
16530         return NULL;
16531 }
16532
16533 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16534 {
16535         void **cb = (void **)msg->cb;
16536         struct cfg80211_registered_device *rdev = cb[2];
16537
16538         nla_nest_end(msg, cb[1]);
16539         genlmsg_end(msg, cb[0]);
16540
16541         memset(msg->cb, 0, sizeof(msg->cb));
16542
16543         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16544                                 NL80211_MCGRP_MLME, gfp);
16545 }
16546
16547 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16548                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16549                               s32 rssi_level, gfp_t gfp)
16550 {
16551         struct sk_buff *msg;
16552         struct wireless_dev *wdev = dev->ieee80211_ptr;
16553         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16554
16555         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16556
16557         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16558                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16559                 return;
16560
16561         if (wdev->cqm_config) {
16562                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16563
16564                 cfg80211_cqm_rssi_update(rdev, dev);
16565
16566                 if (rssi_level == 0)
16567                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16568         }
16569
16570         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16571         if (!msg)
16572                 return;
16573
16574         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16575                         rssi_event))
16576                 goto nla_put_failure;
16577
16578         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16579                                       rssi_level))
16580                 goto nla_put_failure;
16581
16582         cfg80211_send_cqm(msg, gfp);
16583
16584         return;
16585
16586  nla_put_failure:
16587         nlmsg_free(msg);
16588 }
16589 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16590
16591 void cfg80211_cqm_txe_notify(struct net_device *dev,
16592                              const u8 *peer, u32 num_packets,
16593                              u32 rate, u32 intvl, gfp_t gfp)
16594 {
16595         struct sk_buff *msg;
16596
16597         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16598         if (!msg)
16599                 return;
16600
16601         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16602                 goto nla_put_failure;
16603
16604         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16605                 goto nla_put_failure;
16606
16607         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16608                 goto nla_put_failure;
16609
16610         cfg80211_send_cqm(msg, gfp);
16611         return;
16612
16613  nla_put_failure:
16614         nlmsg_free(msg);
16615 }
16616 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16617
16618 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16619                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16620 {
16621         struct sk_buff *msg;
16622
16623         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16624
16625         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16626         if (!msg)
16627                 return;
16628
16629         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16630                 goto nla_put_failure;
16631
16632         cfg80211_send_cqm(msg, gfp);
16633         return;
16634
16635  nla_put_failure:
16636         nlmsg_free(msg);
16637 }
16638 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16639
16640 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16641 {
16642         struct sk_buff *msg;
16643
16644         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16645         if (!msg)
16646                 return;
16647
16648         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16649                 goto nla_put_failure;
16650
16651         cfg80211_send_cqm(msg, gfp);
16652         return;
16653
16654  nla_put_failure:
16655         nlmsg_free(msg);
16656 }
16657 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16658
16659 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16660                                      struct net_device *netdev, const u8 *bssid,
16661                                      const u8 *replay_ctr, gfp_t gfp)
16662 {
16663         struct sk_buff *msg;
16664         struct nlattr *rekey_attr;
16665         void *hdr;
16666
16667         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16668         if (!msg)
16669                 return;
16670
16671         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16672         if (!hdr) {
16673                 nlmsg_free(msg);
16674                 return;
16675         }
16676
16677         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16678             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16679             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16680                 goto nla_put_failure;
16681
16682         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16683         if (!rekey_attr)
16684                 goto nla_put_failure;
16685
16686         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16687                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16688                 goto nla_put_failure;
16689
16690         nla_nest_end(msg, rekey_attr);
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_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16703                                const u8 *replay_ctr, gfp_t gfp)
16704 {
16705         struct wireless_dev *wdev = dev->ieee80211_ptr;
16706         struct wiphy *wiphy = wdev->wiphy;
16707         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16708
16709         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16710         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16711 }
16712 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16713
16714 static void
16715 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16716                                struct net_device *netdev, int index,
16717                                const u8 *bssid, bool preauth, gfp_t gfp)
16718 {
16719         struct sk_buff *msg;
16720         struct nlattr *attr;
16721         void *hdr;
16722
16723         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16724         if (!msg)
16725                 return;
16726
16727         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16728         if (!hdr) {
16729                 nlmsg_free(msg);
16730                 return;
16731         }
16732
16733         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16734             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16735                 goto nla_put_failure;
16736
16737         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16738         if (!attr)
16739                 goto nla_put_failure;
16740
16741         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16742             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16743             (preauth &&
16744              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16745                 goto nla_put_failure;
16746
16747         nla_nest_end(msg, attr);
16748
16749         genlmsg_end(msg, hdr);
16750
16751         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16752                                 NL80211_MCGRP_MLME, gfp);
16753         return;
16754
16755  nla_put_failure:
16756         nlmsg_free(msg);
16757 }
16758
16759 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16760                                      const u8 *bssid, bool preauth, gfp_t gfp)
16761 {
16762         struct wireless_dev *wdev = dev->ieee80211_ptr;
16763         struct wiphy *wiphy = wdev->wiphy;
16764         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16765
16766         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16767         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16768 }
16769 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16770
16771 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16772                                      struct net_device *netdev,
16773                                      struct cfg80211_chan_def *chandef,
16774                                      gfp_t gfp,
16775                                      enum nl80211_commands notif,
16776                                      u8 count)
16777 {
16778         struct sk_buff *msg;
16779         void *hdr;
16780
16781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16782         if (!msg)
16783                 return;
16784
16785         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16786         if (!hdr) {
16787                 nlmsg_free(msg);
16788                 return;
16789         }
16790
16791         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16792                 goto nla_put_failure;
16793
16794         if (nl80211_send_chandef(msg, chandef))
16795                 goto nla_put_failure;
16796
16797         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16798             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16799                         goto nla_put_failure;
16800
16801         genlmsg_end(msg, hdr);
16802
16803         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16804                                 NL80211_MCGRP_MLME, gfp);
16805         return;
16806
16807  nla_put_failure:
16808         nlmsg_free(msg);
16809 }
16810
16811 void cfg80211_ch_switch_notify(struct net_device *dev,
16812                                struct cfg80211_chan_def *chandef)
16813 {
16814         struct wireless_dev *wdev = dev->ieee80211_ptr;
16815         struct wiphy *wiphy = wdev->wiphy;
16816         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16817
16818         ASSERT_WDEV_LOCK(wdev);
16819
16820         trace_cfg80211_ch_switch_notify(dev, chandef);
16821
16822         wdev->chandef = *chandef;
16823         wdev->preset_chandef = *chandef;
16824
16825         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16826             !WARN_ON(!wdev->current_bss))
16827                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16828
16829         cfg80211_sched_dfs_chan_update(rdev);
16830
16831         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16832                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16833 }
16834 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16835
16836 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16837                                        struct cfg80211_chan_def *chandef,
16838                                        u8 count)
16839 {
16840         struct wireless_dev *wdev = dev->ieee80211_ptr;
16841         struct wiphy *wiphy = wdev->wiphy;
16842         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16843
16844         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16845
16846         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16847                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16848 }
16849 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16850
16851 void
16852 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16853                      const struct cfg80211_chan_def *chandef,
16854                      enum nl80211_radar_event event,
16855                      struct net_device *netdev, gfp_t gfp)
16856 {
16857         struct sk_buff *msg;
16858         void *hdr;
16859
16860         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16861         if (!msg)
16862                 return;
16863
16864         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16865         if (!hdr) {
16866                 nlmsg_free(msg);
16867                 return;
16868         }
16869
16870         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16871                 goto nla_put_failure;
16872
16873         /* NOP and radar events don't need a netdev parameter */
16874         if (netdev) {
16875                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16876
16877                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16878                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16879                                       NL80211_ATTR_PAD))
16880                         goto nla_put_failure;
16881         }
16882
16883         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16884                 goto nla_put_failure;
16885
16886         if (nl80211_send_chandef(msg, chandef))
16887                 goto nla_put_failure;
16888
16889         genlmsg_end(msg, hdr);
16890
16891         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16892                                 NL80211_MCGRP_MLME, gfp);
16893         return;
16894
16895  nla_put_failure:
16896         nlmsg_free(msg);
16897 }
16898
16899 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16900                                        struct sta_opmode_info *sta_opmode,
16901                                        gfp_t gfp)
16902 {
16903         struct sk_buff *msg;
16904         struct wireless_dev *wdev = dev->ieee80211_ptr;
16905         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16906         void *hdr;
16907
16908         if (WARN_ON(!mac))
16909                 return;
16910
16911         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16912         if (!msg)
16913                 return;
16914
16915         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16916         if (!hdr) {
16917                 nlmsg_free(msg);
16918                 return;
16919         }
16920
16921         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16922                 goto nla_put_failure;
16923
16924         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16925                 goto nla_put_failure;
16926
16927         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16928                 goto nla_put_failure;
16929
16930         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16931             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16932                 goto nla_put_failure;
16933
16934         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16935             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16936                 goto nla_put_failure;
16937
16938         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16939             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16940                 goto nla_put_failure;
16941
16942         genlmsg_end(msg, hdr);
16943
16944         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16945                                 NL80211_MCGRP_MLME, gfp);
16946
16947         return;
16948
16949 nla_put_failure:
16950         nlmsg_free(msg);
16951 }
16952 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16953
16954 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16955                            u64 cookie, bool acked, s32 ack_signal,
16956                            bool is_valid_ack_signal, gfp_t gfp)
16957 {
16958         struct wireless_dev *wdev = dev->ieee80211_ptr;
16959         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16960         struct sk_buff *msg;
16961         void *hdr;
16962
16963         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16964
16965         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16966
16967         if (!msg)
16968                 return;
16969
16970         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16971         if (!hdr) {
16972                 nlmsg_free(msg);
16973                 return;
16974         }
16975
16976         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16977             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16978             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16979             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16980                               NL80211_ATTR_PAD) ||
16981             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16982             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16983                                                 ack_signal)))
16984                 goto nla_put_failure;
16985
16986         genlmsg_end(msg, hdr);
16987
16988         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16989                                 NL80211_MCGRP_MLME, gfp);
16990         return;
16991
16992  nla_put_failure:
16993         nlmsg_free(msg);
16994 }
16995 EXPORT_SYMBOL(cfg80211_probe_status);
16996
16997 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
16998                                      size_t len, int freq, int sig_dbm)
16999 {
17000         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17001         struct sk_buff *msg;
17002         void *hdr;
17003         struct cfg80211_beacon_registration *reg;
17004
17005         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17006
17007         spin_lock_bh(&rdev->beacon_registrations_lock);
17008         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17009                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17010                 if (!msg) {
17011                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17012                         return;
17013                 }
17014
17015                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17016                 if (!hdr)
17017                         goto nla_put_failure;
17018
17019                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17020                     (freq &&
17021                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17022                                   KHZ_TO_MHZ(freq)) ||
17023                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17024                                   freq % 1000))) ||
17025                     (sig_dbm &&
17026                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17027                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17028                         goto nla_put_failure;
17029
17030                 genlmsg_end(msg, hdr);
17031
17032                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17033         }
17034         spin_unlock_bh(&rdev->beacon_registrations_lock);
17035         return;
17036
17037  nla_put_failure:
17038         spin_unlock_bh(&rdev->beacon_registrations_lock);
17039         nlmsg_free(msg);
17040 }
17041 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17042
17043 #ifdef CONFIG_PM
17044 static int cfg80211_net_detect_results(struct sk_buff *msg,
17045                                        struct cfg80211_wowlan_wakeup *wakeup)
17046 {
17047         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17048         struct nlattr *nl_results, *nl_match, *nl_freqs;
17049         int i, j;
17050
17051         nl_results = nla_nest_start_noflag(msg,
17052                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17053         if (!nl_results)
17054                 return -EMSGSIZE;
17055
17056         for (i = 0; i < nd->n_matches; i++) {
17057                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17058
17059                 nl_match = nla_nest_start_noflag(msg, i);
17060                 if (!nl_match)
17061                         break;
17062
17063                 /* The SSID attribute is optional in nl80211, but for
17064                  * simplicity reasons it's always present in the
17065                  * cfg80211 structure.  If a driver can't pass the
17066                  * SSID, that needs to be changed.  A zero length SSID
17067                  * is still a valid SSID (wildcard), so it cannot be
17068                  * used for this purpose.
17069                  */
17070                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17071                             match->ssid.ssid)) {
17072                         nla_nest_cancel(msg, nl_match);
17073                         goto out;
17074                 }
17075
17076                 if (match->n_channels) {
17077                         nl_freqs = nla_nest_start_noflag(msg,
17078                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17079                         if (!nl_freqs) {
17080                                 nla_nest_cancel(msg, nl_match);
17081                                 goto out;
17082                         }
17083
17084                         for (j = 0; j < match->n_channels; j++) {
17085                                 if (nla_put_u32(msg, j, match->channels[j])) {
17086                                         nla_nest_cancel(msg, nl_freqs);
17087                                         nla_nest_cancel(msg, nl_match);
17088                                         goto out;
17089                                 }
17090                         }
17091
17092                         nla_nest_end(msg, nl_freqs);
17093                 }
17094
17095                 nla_nest_end(msg, nl_match);
17096         }
17097
17098 out:
17099         nla_nest_end(msg, nl_results);
17100         return 0;
17101 }
17102
17103 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17104                                    struct cfg80211_wowlan_wakeup *wakeup,
17105                                    gfp_t gfp)
17106 {
17107         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17108         struct sk_buff *msg;
17109         void *hdr;
17110         int size = 200;
17111
17112         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17113
17114         if (wakeup)
17115                 size += wakeup->packet_present_len;
17116
17117         msg = nlmsg_new(size, gfp);
17118         if (!msg)
17119                 return;
17120
17121         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17122         if (!hdr)
17123                 goto free_msg;
17124
17125         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17126             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17127                               NL80211_ATTR_PAD))
17128                 goto free_msg;
17129
17130         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17131                                         wdev->netdev->ifindex))
17132                 goto free_msg;
17133
17134         if (wakeup) {
17135                 struct nlattr *reasons;
17136
17137                 reasons = nla_nest_start_noflag(msg,
17138                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17139                 if (!reasons)
17140                         goto free_msg;
17141
17142                 if (wakeup->disconnect &&
17143                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17144                         goto free_msg;
17145                 if (wakeup->magic_pkt &&
17146                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17147                         goto free_msg;
17148                 if (wakeup->gtk_rekey_failure &&
17149                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17150                         goto free_msg;
17151                 if (wakeup->eap_identity_req &&
17152                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17153                         goto free_msg;
17154                 if (wakeup->four_way_handshake &&
17155                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17156                         goto free_msg;
17157                 if (wakeup->rfkill_release &&
17158                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17159                         goto free_msg;
17160
17161                 if (wakeup->pattern_idx >= 0 &&
17162                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17163                                 wakeup->pattern_idx))
17164                         goto free_msg;
17165
17166                 if (wakeup->tcp_match &&
17167                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17168                         goto free_msg;
17169
17170                 if (wakeup->tcp_connlost &&
17171                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17172                         goto free_msg;
17173
17174                 if (wakeup->tcp_nomoretokens &&
17175                     nla_put_flag(msg,
17176                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17177                         goto free_msg;
17178
17179                 if (wakeup->packet) {
17180                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17181                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17182
17183                         if (!wakeup->packet_80211) {
17184                                 pkt_attr =
17185                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17186                                 len_attr =
17187                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17188                         }
17189
17190                         if (wakeup->packet_len &&
17191                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17192                                 goto free_msg;
17193
17194                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17195                                     wakeup->packet))
17196                                 goto free_msg;
17197                 }
17198
17199                 if (wakeup->net_detect &&
17200                     cfg80211_net_detect_results(msg, wakeup))
17201                                 goto free_msg;
17202
17203                 nla_nest_end(msg, reasons);
17204         }
17205
17206         genlmsg_end(msg, hdr);
17207
17208         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17209                                 NL80211_MCGRP_MLME, gfp);
17210         return;
17211
17212  free_msg:
17213         nlmsg_free(msg);
17214 }
17215 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17216 #endif
17217
17218 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17219                                 enum nl80211_tdls_operation oper,
17220                                 u16 reason_code, gfp_t gfp)
17221 {
17222         struct wireless_dev *wdev = dev->ieee80211_ptr;
17223         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17224         struct sk_buff *msg;
17225         void *hdr;
17226
17227         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17228                                          reason_code);
17229
17230         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17231         if (!msg)
17232                 return;
17233
17234         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17235         if (!hdr) {
17236                 nlmsg_free(msg);
17237                 return;
17238         }
17239
17240         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17241             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17242             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17243             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17244             (reason_code > 0 &&
17245              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17246                 goto nla_put_failure;
17247
17248         genlmsg_end(msg, hdr);
17249
17250         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17251                                 NL80211_MCGRP_MLME, gfp);
17252         return;
17253
17254  nla_put_failure:
17255         nlmsg_free(msg);
17256 }
17257 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17258
17259 static int nl80211_netlink_notify(struct notifier_block * nb,
17260                                   unsigned long state,
17261                                   void *_notify)
17262 {
17263         struct netlink_notify *notify = _notify;
17264         struct cfg80211_registered_device *rdev;
17265         struct wireless_dev *wdev;
17266         struct cfg80211_beacon_registration *reg, *tmp;
17267
17268         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17269                 return NOTIFY_DONE;
17270
17271         rcu_read_lock();
17272
17273         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17274                 struct cfg80211_sched_scan_request *sched_scan_req;
17275
17276                 list_for_each_entry_rcu(sched_scan_req,
17277                                         &rdev->sched_scan_req_list,
17278                                         list) {
17279                         if (sched_scan_req->owner_nlportid == notify->portid) {
17280                                 sched_scan_req->nl_owner_dead = true;
17281                                 schedule_work(&rdev->sched_scan_stop_wk);
17282                         }
17283                 }
17284
17285                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17286                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17287
17288                         if (wdev->owner_nlportid == notify->portid) {
17289                                 wdev->nl_owner_dead = true;
17290                                 schedule_work(&rdev->destroy_work);
17291                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17292                                 schedule_work(&wdev->disconnect_wk);
17293                         }
17294
17295                         cfg80211_release_pmsr(wdev, notify->portid);
17296                 }
17297
17298                 spin_lock_bh(&rdev->beacon_registrations_lock);
17299                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17300                                          list) {
17301                         if (reg->nlportid == notify->portid) {
17302                                 list_del(&reg->list);
17303                                 kfree(reg);
17304                                 break;
17305                         }
17306                 }
17307                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17308         }
17309
17310         rcu_read_unlock();
17311
17312         /*
17313          * It is possible that the user space process that is controlling the
17314          * indoor setting disappeared, so notify the regulatory core.
17315          */
17316         regulatory_netlink_notify(notify->portid);
17317         return NOTIFY_OK;
17318 }
17319
17320 static struct notifier_block nl80211_netlink_notifier = {
17321         .notifier_call = nl80211_netlink_notify,
17322 };
17323
17324 void cfg80211_ft_event(struct net_device *netdev,
17325                        struct cfg80211_ft_event_params *ft_event)
17326 {
17327         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17328         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17329         struct sk_buff *msg;
17330         void *hdr;
17331
17332         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17333
17334         if (!ft_event->target_ap)
17335                 return;
17336
17337         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17338                         GFP_KERNEL);
17339         if (!msg)
17340                 return;
17341
17342         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17343         if (!hdr)
17344                 goto out;
17345
17346         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17347             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17348             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17349                 goto out;
17350
17351         if (ft_event->ies &&
17352             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17353                 goto out;
17354         if (ft_event->ric_ies &&
17355             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17356                     ft_event->ric_ies))
17357                 goto out;
17358
17359         genlmsg_end(msg, hdr);
17360
17361         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17362                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17363         return;
17364  out:
17365         nlmsg_free(msg);
17366 }
17367 EXPORT_SYMBOL(cfg80211_ft_event);
17368
17369 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17370 {
17371         struct cfg80211_registered_device *rdev;
17372         struct sk_buff *msg;
17373         void *hdr;
17374         u32 nlportid;
17375
17376         rdev = wiphy_to_rdev(wdev->wiphy);
17377         if (!rdev->crit_proto_nlportid)
17378                 return;
17379
17380         nlportid = rdev->crit_proto_nlportid;
17381         rdev->crit_proto_nlportid = 0;
17382
17383         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17384         if (!msg)
17385                 return;
17386
17387         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17388         if (!hdr)
17389                 goto nla_put_failure;
17390
17391         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17392             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17393                               NL80211_ATTR_PAD))
17394                 goto nla_put_failure;
17395
17396         genlmsg_end(msg, hdr);
17397
17398         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17399         return;
17400
17401  nla_put_failure:
17402         nlmsg_free(msg);
17403 }
17404 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17405
17406 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17407 {
17408         struct wiphy *wiphy = wdev->wiphy;
17409         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17410         struct sk_buff *msg;
17411         void *hdr;
17412
17413         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17414         if (!msg)
17415                 return;
17416
17417         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17418         if (!hdr)
17419                 goto out;
17420
17421         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17422             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17423             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17424                               NL80211_ATTR_PAD))
17425                 goto out;
17426
17427         genlmsg_end(msg, hdr);
17428
17429         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17430                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17431         return;
17432  out:
17433         nlmsg_free(msg);
17434 }
17435
17436 int cfg80211_external_auth_request(struct net_device *dev,
17437                                    struct cfg80211_external_auth_params *params,
17438                                    gfp_t gfp)
17439 {
17440         struct wireless_dev *wdev = dev->ieee80211_ptr;
17441         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17442         struct sk_buff *msg;
17443         void *hdr;
17444
17445         if (!wdev->conn_owner_nlportid)
17446                 return -EINVAL;
17447
17448         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17449         if (!msg)
17450                 return -ENOMEM;
17451
17452         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17453         if (!hdr)
17454                 goto nla_put_failure;
17455
17456         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17457             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17458             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17459             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17460                         params->action) ||
17461             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17462             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17463                     params->ssid.ssid))
17464                 goto nla_put_failure;
17465
17466         genlmsg_end(msg, hdr);
17467         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17468                         wdev->conn_owner_nlportid);
17469         return 0;
17470
17471  nla_put_failure:
17472         nlmsg_free(msg);
17473         return -ENOBUFS;
17474 }
17475 EXPORT_SYMBOL(cfg80211_external_auth_request);
17476
17477 void cfg80211_update_owe_info_event(struct net_device *netdev,
17478                                     struct cfg80211_update_owe_info *owe_info,
17479                                     gfp_t gfp)
17480 {
17481         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17482         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17483         struct sk_buff *msg;
17484         void *hdr;
17485
17486         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17487
17488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17489         if (!msg)
17490                 return;
17491
17492         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17493         if (!hdr)
17494                 goto nla_put_failure;
17495
17496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17497             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17498             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17499                 goto nla_put_failure;
17500
17501         if (!owe_info->ie_len ||
17502             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17503                 goto nla_put_failure;
17504
17505         genlmsg_end(msg, hdr);
17506
17507         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17508                                 NL80211_MCGRP_MLME, gfp);
17509         return;
17510
17511 nla_put_failure:
17512         genlmsg_cancel(msg, hdr);
17513         nlmsg_free(msg);
17514 }
17515 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17516
17517 /* initialisation/exit functions */
17518
17519 int __init nl80211_init(void)
17520 {
17521         int err;
17522
17523         err = genl_register_family(&nl80211_fam);
17524         if (err)
17525                 return err;
17526
17527         err = netlink_register_notifier(&nl80211_netlink_notifier);
17528         if (err)
17529                 goto err_out;
17530
17531         return 0;
17532  err_out:
17533         genl_unregister_family(&nl80211_fam);
17534         return err;
17535 }
17536
17537 void nl80211_exit(void)
17538 {
17539         netlink_unregister_notifier(&nl80211_netlink_notifier);
17540         genl_unregister_family(&nl80211_fam);
17541 }