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                 fallthrough;
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                 fallthrough;
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                 fallthrough;
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                                 fallthrough;
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                 fallthrough;
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                 fallthrough;
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                 fallthrough;
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                 fallthrough;
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                 fallthrough;
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->enabled =
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                 if (err)
5020                         goto out;
5021         }
5022
5023         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5024                 err = nl80211_parse_he_bss_color(
5025                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5026                                         &params.he_bss_color);
5027                 if (err)
5028                         goto out;
5029         }
5030
5031         nl80211_calculate_ap_params(&params);
5032
5033         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5034                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5035
5036         wdev_lock(wdev);
5037         err = rdev_start_ap(rdev, dev, &params);
5038         if (!err) {
5039                 wdev->preset_chandef = params.chandef;
5040                 wdev->beacon_interval = params.beacon_interval;
5041                 wdev->chandef = params.chandef;
5042                 wdev->ssid_len = params.ssid_len;
5043                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5044
5045                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5046                         wdev->conn_owner_nlportid = info->snd_portid;
5047         }
5048         wdev_unlock(wdev);
5049
5050 out:
5051         kfree(params.acl);
5052
5053         return err;
5054 }
5055
5056 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5057 {
5058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5059         struct net_device *dev = info->user_ptr[1];
5060         struct wireless_dev *wdev = dev->ieee80211_ptr;
5061         struct cfg80211_beacon_data params;
5062         int err;
5063
5064         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5065             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5066                 return -EOPNOTSUPP;
5067
5068         if (!rdev->ops->change_beacon)
5069                 return -EOPNOTSUPP;
5070
5071         if (!wdev->beacon_interval)
5072                 return -EINVAL;
5073
5074         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5075         if (err)
5076                 return err;
5077
5078         wdev_lock(wdev);
5079         err = rdev_change_beacon(rdev, dev, &params);
5080         wdev_unlock(wdev);
5081
5082         return err;
5083 }
5084
5085 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5086 {
5087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5088         struct net_device *dev = info->user_ptr[1];
5089
5090         return cfg80211_stop_ap(rdev, dev, false);
5091 }
5092
5093 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5094         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5095         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5096         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5097         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5098         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5099         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5100 };
5101
5102 static int parse_station_flags(struct genl_info *info,
5103                                enum nl80211_iftype iftype,
5104                                struct station_parameters *params)
5105 {
5106         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5107         struct nlattr *nla;
5108         int flag;
5109
5110         /*
5111          * Try parsing the new attribute first so userspace
5112          * can specify both for older kernels.
5113          */
5114         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5115         if (nla) {
5116                 struct nl80211_sta_flag_update *sta_flags;
5117
5118                 sta_flags = nla_data(nla);
5119                 params->sta_flags_mask = sta_flags->mask;
5120                 params->sta_flags_set = sta_flags->set;
5121                 params->sta_flags_set &= params->sta_flags_mask;
5122                 if ((params->sta_flags_mask |
5123                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5124                         return -EINVAL;
5125                 return 0;
5126         }
5127
5128         /* if present, parse the old attribute */
5129
5130         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5131         if (!nla)
5132                 return 0;
5133
5134         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5135                 return -EINVAL;
5136
5137         /*
5138          * Only allow certain flags for interface types so that
5139          * other attributes are silently ignored. Remember that
5140          * this is backward compatibility code with old userspace
5141          * and shouldn't be hit in other cases anyway.
5142          */
5143         switch (iftype) {
5144         case NL80211_IFTYPE_AP:
5145         case NL80211_IFTYPE_AP_VLAN:
5146         case NL80211_IFTYPE_P2P_GO:
5147                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5148                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5149                                          BIT(NL80211_STA_FLAG_WME) |
5150                                          BIT(NL80211_STA_FLAG_MFP);
5151                 break;
5152         case NL80211_IFTYPE_P2P_CLIENT:
5153         case NL80211_IFTYPE_STATION:
5154                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5155                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5156                 break;
5157         case NL80211_IFTYPE_MESH_POINT:
5158                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5159                                          BIT(NL80211_STA_FLAG_MFP) |
5160                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5161                 break;
5162         default:
5163                 return -EINVAL;
5164         }
5165
5166         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5167                 if (flags[flag]) {
5168                         params->sta_flags_set |= (1<<flag);
5169
5170                         /* no longer support new API additions in old API */
5171                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5172                                 return -EINVAL;
5173                 }
5174         }
5175
5176         return 0;
5177 }
5178
5179 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5180 {
5181         struct nlattr *rate;
5182         u32 bitrate;
5183         u16 bitrate_compat;
5184         enum nl80211_rate_info rate_flg;
5185
5186         rate = nla_nest_start_noflag(msg, attr);
5187         if (!rate)
5188                 return false;
5189
5190         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5191         bitrate = cfg80211_calculate_bitrate(info);
5192         /* report 16-bit bitrate only if we can */
5193         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5194         if (bitrate > 0 &&
5195             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5196                 return false;
5197         if (bitrate_compat > 0 &&
5198             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5199                 return false;
5200
5201         switch (info->bw) {
5202         case RATE_INFO_BW_5:
5203                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5204                 break;
5205         case RATE_INFO_BW_10:
5206                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5207                 break;
5208         default:
5209                 WARN_ON(1);
5210                 fallthrough;
5211         case RATE_INFO_BW_20:
5212                 rate_flg = 0;
5213                 break;
5214         case RATE_INFO_BW_40:
5215                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5216                 break;
5217         case RATE_INFO_BW_80:
5218                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5219                 break;
5220         case RATE_INFO_BW_160:
5221                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5222                 break;
5223         case RATE_INFO_BW_HE_RU:
5224                 rate_flg = 0;
5225                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5226         }
5227
5228         if (rate_flg && nla_put_flag(msg, rate_flg))
5229                 return false;
5230
5231         if (info->flags & RATE_INFO_FLAGS_MCS) {
5232                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5233                         return false;
5234                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5235                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5236                         return false;
5237         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5238                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5239                         return false;
5240                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5241                         return false;
5242                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5243                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5244                         return false;
5245         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5246                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5247                         return false;
5248                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5249                         return false;
5250                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5251                         return false;
5252                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5253                         return false;
5254                 if (info->bw == RATE_INFO_BW_HE_RU &&
5255                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5256                                info->he_ru_alloc))
5257                         return false;
5258         }
5259
5260         nla_nest_end(msg, rate);
5261         return true;
5262 }
5263
5264 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5265                                int id)
5266 {
5267         void *attr;
5268         int i = 0;
5269
5270         if (!mask)
5271                 return true;
5272
5273         attr = nla_nest_start_noflag(msg, id);
5274         if (!attr)
5275                 return false;
5276
5277         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5278                 if (!(mask & BIT(i)))
5279                         continue;
5280
5281                 if (nla_put_u8(msg, i, signal[i]))
5282                         return false;
5283         }
5284
5285         nla_nest_end(msg, attr);
5286
5287         return true;
5288 }
5289
5290 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5291                                 u32 seq, int flags,
5292                                 struct cfg80211_registered_device *rdev,
5293                                 struct net_device *dev,
5294                                 const u8 *mac_addr, struct station_info *sinfo)
5295 {
5296         void *hdr;
5297         struct nlattr *sinfoattr, *bss_param;
5298
5299         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5300         if (!hdr) {
5301                 cfg80211_sinfo_release_content(sinfo);
5302                 return -1;
5303         }
5304
5305         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5306             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5307             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5308                 goto nla_put_failure;
5309
5310         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5311         if (!sinfoattr)
5312                 goto nla_put_failure;
5313
5314 #define PUT_SINFO(attr, memb, type) do {                                \
5315         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5316         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5317             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5318                              sinfo->memb))                              \
5319                 goto nla_put_failure;                                   \
5320         } while (0)
5321 #define PUT_SINFO_U64(attr, memb) do {                                  \
5322         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5323             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5324                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5325                 goto nla_put_failure;                                   \
5326         } while (0)
5327
5328         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5329         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5330         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5331
5332         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5333                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5334             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5335                         (u32)sinfo->rx_bytes))
5336                 goto nla_put_failure;
5337
5338         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5339                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5340             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5341                         (u32)sinfo->tx_bytes))
5342                 goto nla_put_failure;
5343
5344         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5345         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5346         PUT_SINFO(LLID, llid, u16);
5347         PUT_SINFO(PLID, plid, u16);
5348         PUT_SINFO(PLINK_STATE, plink_state, u8);
5349         PUT_SINFO_U64(RX_DURATION, rx_duration);
5350         PUT_SINFO_U64(TX_DURATION, tx_duration);
5351
5352         if (wiphy_ext_feature_isset(&rdev->wiphy,
5353                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5354                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5355
5356         switch (rdev->wiphy.signal_type) {
5357         case CFG80211_SIGNAL_TYPE_MBM:
5358                 PUT_SINFO(SIGNAL, signal, u8);
5359                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5360                 break;
5361         default:
5362                 break;
5363         }
5364         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5365                 if (!nl80211_put_signal(msg, sinfo->chains,
5366                                         sinfo->chain_signal,
5367                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5368                         goto nla_put_failure;
5369         }
5370         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5371                 if (!nl80211_put_signal(msg, sinfo->chains,
5372                                         sinfo->chain_signal_avg,
5373                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5374                         goto nla_put_failure;
5375         }
5376         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5377                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5378                                           NL80211_STA_INFO_TX_BITRATE))
5379                         goto nla_put_failure;
5380         }
5381         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5382                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5383                                           NL80211_STA_INFO_RX_BITRATE))
5384                         goto nla_put_failure;
5385         }
5386
5387         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5388         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5389         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5390         PUT_SINFO(TX_FAILED, tx_failed, u32);
5391         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5392         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5393         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5394         PUT_SINFO(LOCAL_PM, local_pm, u32);
5395         PUT_SINFO(PEER_PM, peer_pm, u32);
5396         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5397         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5398         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5399
5400         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5401                 bss_param = nla_nest_start_noflag(msg,
5402                                                   NL80211_STA_INFO_BSS_PARAM);
5403                 if (!bss_param)
5404                         goto nla_put_failure;
5405
5406                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5407                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5408                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5409                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5410                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5411                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5412                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5413                                sinfo->bss_param.dtim_period) ||
5414                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5415                                 sinfo->bss_param.beacon_interval))
5416                         goto nla_put_failure;
5417
5418                 nla_nest_end(msg, bss_param);
5419         }
5420         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5421             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5422                     sizeof(struct nl80211_sta_flag_update),
5423                     &sinfo->sta_flags))
5424                 goto nla_put_failure;
5425
5426         PUT_SINFO_U64(T_OFFSET, t_offset);
5427         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5428         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5429         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5430         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5431         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5432         if (wiphy_ext_feature_isset(&rdev->wiphy,
5433                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5434                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5435                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5436         }
5437
5438 #undef PUT_SINFO
5439 #undef PUT_SINFO_U64
5440
5441         if (sinfo->pertid) {
5442                 struct nlattr *tidsattr;
5443                 int tid;
5444
5445                 tidsattr = nla_nest_start_noflag(msg,
5446                                                  NL80211_STA_INFO_TID_STATS);
5447                 if (!tidsattr)
5448                         goto nla_put_failure;
5449
5450                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5451                         struct cfg80211_tid_stats *tidstats;
5452                         struct nlattr *tidattr;
5453
5454                         tidstats = &sinfo->pertid[tid];
5455
5456                         if (!tidstats->filled)
5457                                 continue;
5458
5459                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5460                         if (!tidattr)
5461                                 goto nla_put_failure;
5462
5463 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5464         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5465             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5466                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5467                 goto nla_put_failure;                                   \
5468         } while (0)
5469
5470                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5471                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5472                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5473                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5474
5475 #undef PUT_TIDVAL_U64
5476                         if ((tidstats->filled &
5477                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5478                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5479                                                    NL80211_TID_STATS_TXQ_STATS))
5480                                 goto nla_put_failure;
5481
5482                         nla_nest_end(msg, tidattr);
5483                 }
5484
5485                 nla_nest_end(msg, tidsattr);
5486         }
5487
5488         nla_nest_end(msg, sinfoattr);
5489
5490         if (sinfo->assoc_req_ies_len &&
5491             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5492                     sinfo->assoc_req_ies))
5493                 goto nla_put_failure;
5494
5495         cfg80211_sinfo_release_content(sinfo);
5496         genlmsg_end(msg, hdr);
5497         return 0;
5498
5499  nla_put_failure:
5500         cfg80211_sinfo_release_content(sinfo);
5501         genlmsg_cancel(msg, hdr);
5502         return -EMSGSIZE;
5503 }
5504
5505 static int nl80211_dump_station(struct sk_buff *skb,
5506                                 struct netlink_callback *cb)
5507 {
5508         struct station_info sinfo;
5509         struct cfg80211_registered_device *rdev;
5510         struct wireless_dev *wdev;
5511         u8 mac_addr[ETH_ALEN];
5512         int sta_idx = cb->args[2];
5513         int err;
5514
5515         rtnl_lock();
5516         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5517         if (err)
5518                 goto out_err;
5519
5520         if (!wdev->netdev) {
5521                 err = -EINVAL;
5522                 goto out_err;
5523         }
5524
5525         if (!rdev->ops->dump_station) {
5526                 err = -EOPNOTSUPP;
5527                 goto out_err;
5528         }
5529
5530         while (1) {
5531                 memset(&sinfo, 0, sizeof(sinfo));
5532                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5533                                         mac_addr, &sinfo);
5534                 if (err == -ENOENT)
5535                         break;
5536                 if (err)
5537                         goto out_err;
5538
5539                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5540                                 NETLINK_CB(cb->skb).portid,
5541                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5542                                 rdev, wdev->netdev, mac_addr,
5543                                 &sinfo) < 0)
5544                         goto out;
5545
5546                 sta_idx++;
5547         }
5548
5549  out:
5550         cb->args[2] = sta_idx;
5551         err = skb->len;
5552  out_err:
5553         rtnl_unlock();
5554
5555         return err;
5556 }
5557
5558 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5559 {
5560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5561         struct net_device *dev = info->user_ptr[1];
5562         struct station_info sinfo;
5563         struct sk_buff *msg;
5564         u8 *mac_addr = NULL;
5565         int err;
5566
5567         memset(&sinfo, 0, sizeof(sinfo));
5568
5569         if (!info->attrs[NL80211_ATTR_MAC])
5570                 return -EINVAL;
5571
5572         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5573
5574         if (!rdev->ops->get_station)
5575                 return -EOPNOTSUPP;
5576
5577         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5578         if (err)
5579                 return err;
5580
5581         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5582         if (!msg) {
5583                 cfg80211_sinfo_release_content(&sinfo);
5584                 return -ENOMEM;
5585         }
5586
5587         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5588                                  info->snd_portid, info->snd_seq, 0,
5589                                  rdev, dev, mac_addr, &sinfo) < 0) {
5590                 nlmsg_free(msg);
5591                 return -ENOBUFS;
5592         }
5593
5594         return genlmsg_reply(msg, info);
5595 }
5596
5597 int cfg80211_check_station_change(struct wiphy *wiphy,
5598                                   struct station_parameters *params,
5599                                   enum cfg80211_station_type statype)
5600 {
5601         if (params->listen_interval != -1 &&
5602             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5603                 return -EINVAL;
5604
5605         if (params->support_p2p_ps != -1 &&
5606             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5607                 return -EINVAL;
5608
5609         if (params->aid &&
5610             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5611             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5612                 return -EINVAL;
5613
5614         /* When you run into this, adjust the code below for the new flag */
5615         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5616
5617         switch (statype) {
5618         case CFG80211_STA_MESH_PEER_KERNEL:
5619         case CFG80211_STA_MESH_PEER_USER:
5620                 /*
5621                  * No ignoring the TDLS flag here -- the userspace mesh
5622                  * code doesn't have the bug of including TDLS in the
5623                  * mask everywhere.
5624                  */
5625                 if (params->sta_flags_mask &
5626                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5627                                   BIT(NL80211_STA_FLAG_MFP) |
5628                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5629                         return -EINVAL;
5630                 break;
5631         case CFG80211_STA_TDLS_PEER_SETUP:
5632         case CFG80211_STA_TDLS_PEER_ACTIVE:
5633                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5634                         return -EINVAL;
5635                 /* ignore since it can't change */
5636                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5637                 break;
5638         default:
5639                 /* disallow mesh-specific things */
5640                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5641                         return -EINVAL;
5642                 if (params->local_pm)
5643                         return -EINVAL;
5644                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5645                         return -EINVAL;
5646         }
5647
5648         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5649             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5650                 /* TDLS can't be set, ... */
5651                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5652                         return -EINVAL;
5653                 /*
5654                  * ... but don't bother the driver with it. This works around
5655                  * a hostapd/wpa_supplicant issue -- it always includes the
5656                  * TLDS_PEER flag in the mask even for AP mode.
5657                  */
5658                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5659         }
5660
5661         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5662             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5663                 /* reject other things that can't change */
5664                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5665                         return -EINVAL;
5666                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5667                         return -EINVAL;
5668                 if (params->supported_rates)
5669                         return -EINVAL;
5670                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5671                     params->he_capa)
5672                         return -EINVAL;
5673         }
5674
5675         if (statype != CFG80211_STA_AP_CLIENT &&
5676             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5677                 if (params->vlan)
5678                         return -EINVAL;
5679         }
5680
5681         switch (statype) {
5682         case CFG80211_STA_AP_MLME_CLIENT:
5683                 /* Use this only for authorizing/unauthorizing a station */
5684                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5685                         return -EOPNOTSUPP;
5686                 break;
5687         case CFG80211_STA_AP_CLIENT:
5688         case CFG80211_STA_AP_CLIENT_UNASSOC:
5689                 /* accept only the listed bits */
5690                 if (params->sta_flags_mask &
5691                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5692                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5693                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5694                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5695                                   BIT(NL80211_STA_FLAG_WME) |
5696                                   BIT(NL80211_STA_FLAG_MFP)))
5697                         return -EINVAL;
5698
5699                 /* but authenticated/associated only if driver handles it */
5700                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5701                     params->sta_flags_mask &
5702                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5703                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5704                         return -EINVAL;
5705                 break;
5706         case CFG80211_STA_IBSS:
5707         case CFG80211_STA_AP_STA:
5708                 /* reject any changes other than AUTHORIZED */
5709                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5710                         return -EINVAL;
5711                 break;
5712         case CFG80211_STA_TDLS_PEER_SETUP:
5713                 /* reject any changes other than AUTHORIZED or WME */
5714                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5715                                                BIT(NL80211_STA_FLAG_WME)))
5716                         return -EINVAL;
5717                 /* force (at least) rates when authorizing */
5718                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5719                     !params->supported_rates)
5720                         return -EINVAL;
5721                 break;
5722         case CFG80211_STA_TDLS_PEER_ACTIVE:
5723                 /* reject any changes */
5724                 return -EINVAL;
5725         case CFG80211_STA_MESH_PEER_KERNEL:
5726                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5727                         return -EINVAL;
5728                 break;
5729         case CFG80211_STA_MESH_PEER_USER:
5730                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5731                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5732                         return -EINVAL;
5733                 break;
5734         }
5735
5736         /*
5737          * Older kernel versions ignored this attribute entirely, so don't
5738          * reject attempts to update it but mark it as unused instead so the
5739          * driver won't look at the data.
5740          */
5741         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5742             statype != CFG80211_STA_TDLS_PEER_SETUP)
5743                 params->opmode_notif_used = false;
5744
5745         return 0;
5746 }
5747 EXPORT_SYMBOL(cfg80211_check_station_change);
5748
5749 /*
5750  * Get vlan interface making sure it is running and on the right wiphy.
5751  */
5752 static struct net_device *get_vlan(struct genl_info *info,
5753                                    struct cfg80211_registered_device *rdev)
5754 {
5755         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5756         struct net_device *v;
5757         int ret;
5758
5759         if (!vlanattr)
5760                 return NULL;
5761
5762         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5763         if (!v)
5764                 return ERR_PTR(-ENODEV);
5765
5766         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5767                 ret = -EINVAL;
5768                 goto error;
5769         }
5770
5771         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5772             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5773             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5774                 ret = -EINVAL;
5775                 goto error;
5776         }
5777
5778         if (!netif_running(v)) {
5779                 ret = -ENETDOWN;
5780                 goto error;
5781         }
5782
5783         return v;
5784  error:
5785         dev_put(v);
5786         return ERR_PTR(ret);
5787 }
5788
5789 static const struct nla_policy
5790 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5791         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5792         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5793 };
5794
5795 static int nl80211_parse_sta_wme(struct genl_info *info,
5796                                  struct station_parameters *params)
5797 {
5798         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5799         struct nlattr *nla;
5800         int err;
5801
5802         /* parse WME attributes if present */
5803         if (!info->attrs[NL80211_ATTR_STA_WME])
5804                 return 0;
5805
5806         nla = info->attrs[NL80211_ATTR_STA_WME];
5807         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5808                                           nl80211_sta_wme_policy,
5809                                           info->extack);
5810         if (err)
5811                 return err;
5812
5813         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5814                 params->uapsd_queues = nla_get_u8(
5815                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5816         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5817                 return -EINVAL;
5818
5819         if (tb[NL80211_STA_WME_MAX_SP])
5820                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5821
5822         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5823                 return -EINVAL;
5824
5825         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5826
5827         return 0;
5828 }
5829
5830 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5831                                       struct station_parameters *params)
5832 {
5833         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5834                 params->supported_channels =
5835                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5836                 params->supported_channels_len =
5837                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5838                 /*
5839                  * Need to include at least one (first channel, number of
5840                  * channels) tuple for each subband, and must have proper
5841                  * tuples for the rest of the data as well.
5842                  */
5843                 if (params->supported_channels_len < 2)
5844                         return -EINVAL;
5845                 if (params->supported_channels_len % 2)
5846                         return -EINVAL;
5847         }
5848
5849         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5850                 params->supported_oper_classes =
5851                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5852                 params->supported_oper_classes_len =
5853                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5854                 /*
5855                  * The value of the Length field of the Supported Operating
5856                  * Classes element is between 2 and 253.
5857                  */
5858                 if (params->supported_oper_classes_len < 2 ||
5859                     params->supported_oper_classes_len > 253)
5860                         return -EINVAL;
5861         }
5862         return 0;
5863 }
5864
5865 static int nl80211_set_station_tdls(struct genl_info *info,
5866                                     struct station_parameters *params)
5867 {
5868         int err;
5869         /* Dummy STA entry gets updated once the peer capabilities are known */
5870         if (info->attrs[NL80211_ATTR_PEER_AID])
5871                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5872         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5873                 params->ht_capa =
5874                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5875         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5876                 params->vht_capa =
5877                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5878         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5879                 params->he_capa =
5880                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5881                 params->he_capa_len =
5882                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5883
5884                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5885                         return -EINVAL;
5886         }
5887
5888         err = nl80211_parse_sta_channel_info(info, params);
5889         if (err)
5890                 return err;
5891
5892         return nl80211_parse_sta_wme(info, params);
5893 }
5894
5895 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5896                                              struct station_parameters *params)
5897 {
5898         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5899         int idx;
5900
5901         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5902                 if (!rdev->ops->set_tx_power ||
5903                     !wiphy_ext_feature_isset(&rdev->wiphy,
5904                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5905                         return -EOPNOTSUPP;
5906
5907                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5908                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5909
5910                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5911                         idx = NL80211_ATTR_STA_TX_POWER;
5912
5913                         if (info->attrs[idx])
5914                                 params->txpwr.power =
5915                                         nla_get_s16(info->attrs[idx]);
5916                         else
5917                                 return -EINVAL;
5918                 }
5919                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5920         }
5921
5922         return 0;
5923 }
5924
5925 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5926 {
5927         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5928         struct net_device *dev = info->user_ptr[1];
5929         struct station_parameters params;
5930         u8 *mac_addr;
5931         int err;
5932
5933         memset(&params, 0, sizeof(params));
5934
5935         if (!rdev->ops->change_station)
5936                 return -EOPNOTSUPP;
5937
5938         /*
5939          * AID and listen_interval properties can be set only for unassociated
5940          * station. Include these parameters here and will check them in
5941          * cfg80211_check_station_change().
5942          */
5943         if (info->attrs[NL80211_ATTR_STA_AID])
5944                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5945
5946         if (info->attrs[NL80211_ATTR_VLAN_ID])
5947                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5948
5949         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5950                 params.listen_interval =
5951                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5952         else
5953                 params.listen_interval = -1;
5954
5955         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5956                 params.support_p2p_ps =
5957                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5958         else
5959                 params.support_p2p_ps = -1;
5960
5961         if (!info->attrs[NL80211_ATTR_MAC])
5962                 return -EINVAL;
5963
5964         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5965
5966         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5967                 params.supported_rates =
5968                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5969                 params.supported_rates_len =
5970                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5971         }
5972
5973         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5974                 params.capability =
5975                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5976                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5977         }
5978
5979         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5980                 params.ext_capab =
5981                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5982                 params.ext_capab_len =
5983                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5984         }
5985
5986         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5987                 return -EINVAL;
5988
5989         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5990                 params.plink_action =
5991                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5992
5993         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5994                 params.plink_state =
5995                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5996                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5997                         params.peer_aid = nla_get_u16(
5998                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5999                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6000         }
6001
6002         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6003                 params.local_pm = nla_get_u32(
6004                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6005
6006         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6007                 params.opmode_notif_used = true;
6008                 params.opmode_notif =
6009                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6010         }
6011
6012         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6013                 params.he_6ghz_capa =
6014                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6015
6016         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6017                 params.airtime_weight =
6018                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6019
6020         if (params.airtime_weight &&
6021             !wiphy_ext_feature_isset(&rdev->wiphy,
6022                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6023                 return -EOPNOTSUPP;
6024
6025         err = nl80211_parse_sta_txpower_setting(info, &params);
6026         if (err)
6027                 return err;
6028
6029         /* Include parameters for TDLS peer (will check later) */
6030         err = nl80211_set_station_tdls(info, &params);
6031         if (err)
6032                 return err;
6033
6034         params.vlan = get_vlan(info, rdev);
6035         if (IS_ERR(params.vlan))
6036                 return PTR_ERR(params.vlan);
6037
6038         switch (dev->ieee80211_ptr->iftype) {
6039         case NL80211_IFTYPE_AP:
6040         case NL80211_IFTYPE_AP_VLAN:
6041         case NL80211_IFTYPE_P2P_GO:
6042         case NL80211_IFTYPE_P2P_CLIENT:
6043         case NL80211_IFTYPE_STATION:
6044         case NL80211_IFTYPE_ADHOC:
6045         case NL80211_IFTYPE_MESH_POINT:
6046                 break;
6047         default:
6048                 err = -EOPNOTSUPP;
6049                 goto out_put_vlan;
6050         }
6051
6052         /* driver will call cfg80211_check_station_change() */
6053         err = rdev_change_station(rdev, dev, mac_addr, &params);
6054
6055  out_put_vlan:
6056         if (params.vlan)
6057                 dev_put(params.vlan);
6058
6059         return err;
6060 }
6061
6062 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6063 {
6064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6065         int err;
6066         struct net_device *dev = info->user_ptr[1];
6067         struct station_parameters params;
6068         u8 *mac_addr = NULL;
6069         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6070                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6071
6072         memset(&params, 0, sizeof(params));
6073
6074         if (!rdev->ops->add_station)
6075                 return -EOPNOTSUPP;
6076
6077         if (!info->attrs[NL80211_ATTR_MAC])
6078                 return -EINVAL;
6079
6080         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6081                 return -EINVAL;
6082
6083         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6084                 return -EINVAL;
6085
6086         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6087             !info->attrs[NL80211_ATTR_PEER_AID])
6088                 return -EINVAL;
6089
6090         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6091         params.supported_rates =
6092                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6093         params.supported_rates_len =
6094                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6095         params.listen_interval =
6096                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6097
6098         if (info->attrs[NL80211_ATTR_VLAN_ID])
6099                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6100
6101         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6102                 params.support_p2p_ps =
6103                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6104         } else {
6105                 /*
6106                  * if not specified, assume it's supported for P2P GO interface,
6107                  * and is NOT supported for AP interface
6108                  */
6109                 params.support_p2p_ps =
6110                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6111         }
6112
6113         if (info->attrs[NL80211_ATTR_PEER_AID])
6114                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6115         else
6116                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6117
6118         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6119                 params.capability =
6120                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6121                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6122         }
6123
6124         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6125                 params.ext_capab =
6126                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6127                 params.ext_capab_len =
6128                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6129         }
6130
6131         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6132                 params.ht_capa =
6133                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6134
6135         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6136                 params.vht_capa =
6137                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6138
6139         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6140                 params.he_capa =
6141                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6142                 params.he_capa_len =
6143                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6144
6145                 /* max len is validated in nla policy */
6146                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6147                         return -EINVAL;
6148         }
6149
6150         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6151                 params.he_6ghz_capa =
6152                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6153
6154         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6155                 params.opmode_notif_used = true;
6156                 params.opmode_notif =
6157                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6158         }
6159
6160         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6161                 params.plink_action =
6162                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6163
6164         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6165                 params.airtime_weight =
6166                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6167
6168         if (params.airtime_weight &&
6169             !wiphy_ext_feature_isset(&rdev->wiphy,
6170                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6171                 return -EOPNOTSUPP;
6172
6173         err = nl80211_parse_sta_txpower_setting(info, &params);
6174         if (err)
6175                 return err;
6176
6177         err = nl80211_parse_sta_channel_info(info, &params);
6178         if (err)
6179                 return err;
6180
6181         err = nl80211_parse_sta_wme(info, &params);
6182         if (err)
6183                 return err;
6184
6185         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6186                 return -EINVAL;
6187
6188         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6189          * as userspace might just pass through the capabilities from the IEs
6190          * directly, rather than enforcing this restriction and returning an
6191          * error in this case.
6192          */
6193         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6194                 params.ht_capa = NULL;
6195                 params.vht_capa = NULL;
6196
6197                 /* HE requires WME */
6198                 if (params.he_capa_len || params.he_6ghz_capa)
6199                         return -EINVAL;
6200         }
6201
6202         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6203         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6204                 return -EINVAL;
6205
6206         /* When you run into this, adjust the code below for the new flag */
6207         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6208
6209         switch (dev->ieee80211_ptr->iftype) {
6210         case NL80211_IFTYPE_AP:
6211         case NL80211_IFTYPE_AP_VLAN:
6212         case NL80211_IFTYPE_P2P_GO:
6213                 /* ignore WME attributes if iface/sta is not capable */
6214                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6215                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6216                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6217
6218                 /* TDLS peers cannot be added */
6219                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6220                     info->attrs[NL80211_ATTR_PEER_AID])
6221                         return -EINVAL;
6222                 /* but don't bother the driver with it */
6223                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6224
6225                 /* allow authenticated/associated only if driver handles it */
6226                 if (!(rdev->wiphy.features &
6227                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6228                     params.sta_flags_mask & auth_assoc)
6229                         return -EINVAL;
6230
6231                 /* Older userspace, or userspace wanting to be compatible with
6232                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6233                  * and assoc flags in the mask, but assumes the station will be
6234                  * added as associated anyway since this was the required driver
6235                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6236                  * introduced.
6237                  * In order to not bother drivers with this quirk in the API
6238                  * set the flags in both the mask and set for new stations in
6239                  * this case.
6240                  */
6241                 if (!(params.sta_flags_mask & auth_assoc)) {
6242                         params.sta_flags_mask |= auth_assoc;
6243                         params.sta_flags_set |= auth_assoc;
6244                 }
6245
6246                 /* must be last in here for error handling */
6247                 params.vlan = get_vlan(info, rdev);
6248                 if (IS_ERR(params.vlan))
6249                         return PTR_ERR(params.vlan);
6250                 break;
6251         case NL80211_IFTYPE_MESH_POINT:
6252                 /* ignore uAPSD data */
6253                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6254
6255                 /* associated is disallowed */
6256                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6257                         return -EINVAL;
6258                 /* TDLS peers cannot be added */
6259                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6260                     info->attrs[NL80211_ATTR_PEER_AID])
6261                         return -EINVAL;
6262                 break;
6263         case NL80211_IFTYPE_STATION:
6264         case NL80211_IFTYPE_P2P_CLIENT:
6265                 /* ignore uAPSD data */
6266                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6267
6268                 /* these are disallowed */
6269                 if (params.sta_flags_mask &
6270                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6271                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6272                         return -EINVAL;
6273                 /* Only TDLS peers can be added */
6274                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6275                         return -EINVAL;
6276                 /* Can only add if TDLS ... */
6277                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6278                         return -EOPNOTSUPP;
6279                 /* ... with external setup is supported */
6280                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6281                         return -EOPNOTSUPP;
6282                 /*
6283                  * Older wpa_supplicant versions always mark the TDLS peer
6284                  * as authorized, but it shouldn't yet be.
6285                  */
6286                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6287                 break;
6288         default:
6289                 return -EOPNOTSUPP;
6290         }
6291
6292         /* be aware of params.vlan when changing code here */
6293
6294         err = rdev_add_station(rdev, dev, mac_addr, &params);
6295
6296         if (params.vlan)
6297                 dev_put(params.vlan);
6298         return err;
6299 }
6300
6301 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6302 {
6303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6304         struct net_device *dev = info->user_ptr[1];
6305         struct station_del_parameters params;
6306
6307         memset(&params, 0, sizeof(params));
6308
6309         if (info->attrs[NL80211_ATTR_MAC])
6310                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6311
6312         switch (dev->ieee80211_ptr->iftype) {
6313         case NL80211_IFTYPE_AP:
6314         case NL80211_IFTYPE_AP_VLAN:
6315         case NL80211_IFTYPE_MESH_POINT:
6316         case NL80211_IFTYPE_P2P_GO:
6317                 /* always accept these */
6318                 break;
6319         case NL80211_IFTYPE_ADHOC:
6320                 /* conditionally accept */
6321                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6322                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6323                         break;
6324                 return -EINVAL;
6325         default:
6326                 return -EINVAL;
6327         }
6328
6329         if (!rdev->ops->del_station)
6330                 return -EOPNOTSUPP;
6331
6332         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6333                 params.subtype =
6334                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6335                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6336                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6337                         return -EINVAL;
6338         } else {
6339                 /* Default to Deauthentication frame */
6340                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6341         }
6342
6343         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6344                 params.reason_code =
6345                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6346                 if (params.reason_code == 0)
6347                         return -EINVAL; /* 0 is reserved */
6348         } else {
6349                 /* Default to reason code 2 */
6350                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6351         }
6352
6353         return rdev_del_station(rdev, dev, &params);
6354 }
6355
6356 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6357                                 int flags, struct net_device *dev,
6358                                 u8 *dst, u8 *next_hop,
6359                                 struct mpath_info *pinfo)
6360 {
6361         void *hdr;
6362         struct nlattr *pinfoattr;
6363
6364         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6365         if (!hdr)
6366                 return -1;
6367
6368         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6369             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6370             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6371             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6372                 goto nla_put_failure;
6373
6374         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6375         if (!pinfoattr)
6376                 goto nla_put_failure;
6377         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6378             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6379                         pinfo->frame_qlen))
6380                 goto nla_put_failure;
6381         if (((pinfo->filled & MPATH_INFO_SN) &&
6382              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6383             ((pinfo->filled & MPATH_INFO_METRIC) &&
6384              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6385                          pinfo->metric)) ||
6386             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6387              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6388                          pinfo->exptime)) ||
6389             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6390              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6391                         pinfo->flags)) ||
6392             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6393              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6394                          pinfo->discovery_timeout)) ||
6395             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6396              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6397                         pinfo->discovery_retries)) ||
6398             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6399              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6400                         pinfo->hop_count)) ||
6401             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6402              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6403                          pinfo->path_change_count)))
6404                 goto nla_put_failure;
6405
6406         nla_nest_end(msg, pinfoattr);
6407
6408         genlmsg_end(msg, hdr);
6409         return 0;
6410
6411  nla_put_failure:
6412         genlmsg_cancel(msg, hdr);
6413         return -EMSGSIZE;
6414 }
6415
6416 static int nl80211_dump_mpath(struct sk_buff *skb,
6417                               struct netlink_callback *cb)
6418 {
6419         struct mpath_info pinfo;
6420         struct cfg80211_registered_device *rdev;
6421         struct wireless_dev *wdev;
6422         u8 dst[ETH_ALEN];
6423         u8 next_hop[ETH_ALEN];
6424         int path_idx = cb->args[2];
6425         int err;
6426
6427         rtnl_lock();
6428         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6429         if (err)
6430                 goto out_err;
6431
6432         if (!rdev->ops->dump_mpath) {
6433                 err = -EOPNOTSUPP;
6434                 goto out_err;
6435         }
6436
6437         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6438                 err = -EOPNOTSUPP;
6439                 goto out_err;
6440         }
6441
6442         while (1) {
6443                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6444                                       next_hop, &pinfo);
6445                 if (err == -ENOENT)
6446                         break;
6447                 if (err)
6448                         goto out_err;
6449
6450                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6451                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6452                                        wdev->netdev, dst, next_hop,
6453                                        &pinfo) < 0)
6454                         goto out;
6455
6456                 path_idx++;
6457         }
6458
6459  out:
6460         cb->args[2] = path_idx;
6461         err = skb->len;
6462  out_err:
6463         rtnl_unlock();
6464         return err;
6465 }
6466
6467 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6468 {
6469         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6470         int err;
6471         struct net_device *dev = info->user_ptr[1];
6472         struct mpath_info pinfo;
6473         struct sk_buff *msg;
6474         u8 *dst = NULL;
6475         u8 next_hop[ETH_ALEN];
6476
6477         memset(&pinfo, 0, sizeof(pinfo));
6478
6479         if (!info->attrs[NL80211_ATTR_MAC])
6480                 return -EINVAL;
6481
6482         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6483
6484         if (!rdev->ops->get_mpath)
6485                 return -EOPNOTSUPP;
6486
6487         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6488                 return -EOPNOTSUPP;
6489
6490         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6491         if (err)
6492                 return err;
6493
6494         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6495         if (!msg)
6496                 return -ENOMEM;
6497
6498         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6499                                  dev, dst, next_hop, &pinfo) < 0) {
6500                 nlmsg_free(msg);
6501                 return -ENOBUFS;
6502         }
6503
6504         return genlmsg_reply(msg, info);
6505 }
6506
6507 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6508 {
6509         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6510         struct net_device *dev = info->user_ptr[1];
6511         u8 *dst = NULL;
6512         u8 *next_hop = NULL;
6513
6514         if (!info->attrs[NL80211_ATTR_MAC])
6515                 return -EINVAL;
6516
6517         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6518                 return -EINVAL;
6519
6520         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6521         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6522
6523         if (!rdev->ops->change_mpath)
6524                 return -EOPNOTSUPP;
6525
6526         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6527                 return -EOPNOTSUPP;
6528
6529         return rdev_change_mpath(rdev, dev, dst, next_hop);
6530 }
6531
6532 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6533 {
6534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6535         struct net_device *dev = info->user_ptr[1];
6536         u8 *dst = NULL;
6537         u8 *next_hop = NULL;
6538
6539         if (!info->attrs[NL80211_ATTR_MAC])
6540                 return -EINVAL;
6541
6542         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6543                 return -EINVAL;
6544
6545         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6546         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6547
6548         if (!rdev->ops->add_mpath)
6549                 return -EOPNOTSUPP;
6550
6551         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6552                 return -EOPNOTSUPP;
6553
6554         return rdev_add_mpath(rdev, dev, dst, next_hop);
6555 }
6556
6557 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6558 {
6559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6560         struct net_device *dev = info->user_ptr[1];
6561         u8 *dst = NULL;
6562
6563         if (info->attrs[NL80211_ATTR_MAC])
6564                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6565
6566         if (!rdev->ops->del_mpath)
6567                 return -EOPNOTSUPP;
6568
6569         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6570                 return -EOPNOTSUPP;
6571
6572         return rdev_del_mpath(rdev, dev, dst);
6573 }
6574
6575 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6576 {
6577         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6578         int err;
6579         struct net_device *dev = info->user_ptr[1];
6580         struct mpath_info pinfo;
6581         struct sk_buff *msg;
6582         u8 *dst = NULL;
6583         u8 mpp[ETH_ALEN];
6584
6585         memset(&pinfo, 0, sizeof(pinfo));
6586
6587         if (!info->attrs[NL80211_ATTR_MAC])
6588                 return -EINVAL;
6589
6590         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6591
6592         if (!rdev->ops->get_mpp)
6593                 return -EOPNOTSUPP;
6594
6595         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6596                 return -EOPNOTSUPP;
6597
6598         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6599         if (err)
6600                 return err;
6601
6602         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6603         if (!msg)
6604                 return -ENOMEM;
6605
6606         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6607                                dev, dst, mpp, &pinfo) < 0) {
6608                 nlmsg_free(msg);
6609                 return -ENOBUFS;
6610         }
6611
6612         return genlmsg_reply(msg, info);
6613 }
6614
6615 static int nl80211_dump_mpp(struct sk_buff *skb,
6616                             struct netlink_callback *cb)
6617 {
6618         struct mpath_info pinfo;
6619         struct cfg80211_registered_device *rdev;
6620         struct wireless_dev *wdev;
6621         u8 dst[ETH_ALEN];
6622         u8 mpp[ETH_ALEN];
6623         int path_idx = cb->args[2];
6624         int err;
6625
6626         rtnl_lock();
6627         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6628         if (err)
6629                 goto out_err;
6630
6631         if (!rdev->ops->dump_mpp) {
6632                 err = -EOPNOTSUPP;
6633                 goto out_err;
6634         }
6635
6636         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6637                 err = -EOPNOTSUPP;
6638                 goto out_err;
6639         }
6640
6641         while (1) {
6642                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6643                                     mpp, &pinfo);
6644                 if (err == -ENOENT)
6645                         break;
6646                 if (err)
6647                         goto out_err;
6648
6649                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6650                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6651                                        wdev->netdev, dst, mpp,
6652                                        &pinfo) < 0)
6653                         goto out;
6654
6655                 path_idx++;
6656         }
6657
6658  out:
6659         cb->args[2] = path_idx;
6660         err = skb->len;
6661  out_err:
6662         rtnl_unlock();
6663         return err;
6664 }
6665
6666 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6667 {
6668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6669         struct net_device *dev = info->user_ptr[1];
6670         struct wireless_dev *wdev = dev->ieee80211_ptr;
6671         struct bss_parameters params;
6672         int err;
6673
6674         memset(&params, 0, sizeof(params));
6675         /* default to not changing parameters */
6676         params.use_cts_prot = -1;
6677         params.use_short_preamble = -1;
6678         params.use_short_slot_time = -1;
6679         params.ap_isolate = -1;
6680         params.ht_opmode = -1;
6681         params.p2p_ctwindow = -1;
6682         params.p2p_opp_ps = -1;
6683
6684         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6685                 params.use_cts_prot =
6686                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6687         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6688                 params.use_short_preamble =
6689                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6690         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6691                 params.use_short_slot_time =
6692                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6693         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6694                 params.basic_rates =
6695                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6696                 params.basic_rates_len =
6697                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6698         }
6699         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6700                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6701         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6702                 params.ht_opmode =
6703                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6704
6705         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6706                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6707                         return -EINVAL;
6708                 params.p2p_ctwindow =
6709                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6710                 if (params.p2p_ctwindow != 0 &&
6711                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6712                         return -EINVAL;
6713         }
6714
6715         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6716                 u8 tmp;
6717
6718                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6719                         return -EINVAL;
6720                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6721                 params.p2p_opp_ps = tmp;
6722                 if (params.p2p_opp_ps &&
6723                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6724                         return -EINVAL;
6725         }
6726
6727         if (!rdev->ops->change_bss)
6728                 return -EOPNOTSUPP;
6729
6730         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6731             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6732                 return -EOPNOTSUPP;
6733
6734         wdev_lock(wdev);
6735         err = rdev_change_bss(rdev, dev, &params);
6736         wdev_unlock(wdev);
6737
6738         return err;
6739 }
6740
6741 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6742 {
6743         char *data = NULL;
6744         bool is_indoor;
6745         enum nl80211_user_reg_hint_type user_reg_hint_type;
6746         u32 owner_nlportid;
6747
6748         /*
6749          * You should only get this when cfg80211 hasn't yet initialized
6750          * completely when built-in to the kernel right between the time
6751          * window between nl80211_init() and regulatory_init(), if that is
6752          * even possible.
6753          */
6754         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6755                 return -EINPROGRESS;
6756
6757         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6758                 user_reg_hint_type =
6759                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6760         else
6761                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6762
6763         switch (user_reg_hint_type) {
6764         case NL80211_USER_REG_HINT_USER:
6765         case NL80211_USER_REG_HINT_CELL_BASE:
6766                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6767                         return -EINVAL;
6768
6769                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6770                 return regulatory_hint_user(data, user_reg_hint_type);
6771         case NL80211_USER_REG_HINT_INDOOR:
6772                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6773                         owner_nlportid = info->snd_portid;
6774                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6775                 } else {
6776                         owner_nlportid = 0;
6777                         is_indoor = true;
6778                 }
6779
6780                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6781         default:
6782                 return -EINVAL;
6783         }
6784 }
6785
6786 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6787 {
6788         return reg_reload_regdb();
6789 }
6790
6791 static int nl80211_get_mesh_config(struct sk_buff *skb,
6792                                    struct genl_info *info)
6793 {
6794         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6795         struct net_device *dev = info->user_ptr[1];
6796         struct wireless_dev *wdev = dev->ieee80211_ptr;
6797         struct mesh_config cur_params;
6798         int err = 0;
6799         void *hdr;
6800         struct nlattr *pinfoattr;
6801         struct sk_buff *msg;
6802
6803         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6804                 return -EOPNOTSUPP;
6805
6806         if (!rdev->ops->get_mesh_config)
6807                 return -EOPNOTSUPP;
6808
6809         wdev_lock(wdev);
6810         /* If not connected, get default parameters */
6811         if (!wdev->mesh_id_len)
6812                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6813         else
6814                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6815         wdev_unlock(wdev);
6816
6817         if (err)
6818                 return err;
6819
6820         /* Draw up a netlink message to send back */
6821         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6822         if (!msg)
6823                 return -ENOMEM;
6824         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6825                              NL80211_CMD_GET_MESH_CONFIG);
6826         if (!hdr)
6827                 goto out;
6828         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6829         if (!pinfoattr)
6830                 goto nla_put_failure;
6831         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6832             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6833                         cur_params.dot11MeshRetryTimeout) ||
6834             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6835                         cur_params.dot11MeshConfirmTimeout) ||
6836             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6837                         cur_params.dot11MeshHoldingTimeout) ||
6838             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6839                         cur_params.dot11MeshMaxPeerLinks) ||
6840             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6841                        cur_params.dot11MeshMaxRetries) ||
6842             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6843                        cur_params.dot11MeshTTL) ||
6844             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6845                        cur_params.element_ttl) ||
6846             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6847                        cur_params.auto_open_plinks) ||
6848             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6849                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6850             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6851                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6852             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6853                         cur_params.path_refresh_time) ||
6854             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6855                         cur_params.min_discovery_timeout) ||
6856             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6857                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6858             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6859                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6860             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6861                         cur_params.dot11MeshHWMPperrMinInterval) ||
6862             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6863                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6864             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6865                        cur_params.dot11MeshHWMPRootMode) ||
6866             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6867                         cur_params.dot11MeshHWMPRannInterval) ||
6868             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6869                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6870             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6871                        cur_params.dot11MeshForwarding) ||
6872             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6873                         cur_params.rssi_threshold) ||
6874             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6875                         cur_params.ht_opmode) ||
6876             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6877                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6878             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6879                         cur_params.dot11MeshHWMProotInterval) ||
6880             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6881                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6882             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6883                         cur_params.power_mode) ||
6884             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6885                         cur_params.dot11MeshAwakeWindowDuration) ||
6886             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6887                         cur_params.plink_timeout) ||
6888             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6889                        cur_params.dot11MeshConnectedToMeshGate) ||
6890             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
6891                        cur_params.dot11MeshNolearn) ||
6892             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
6893                        cur_params.dot11MeshConnectedToAuthServer))
6894                 goto nla_put_failure;
6895         nla_nest_end(msg, pinfoattr);
6896         genlmsg_end(msg, hdr);
6897         return genlmsg_reply(msg, info);
6898
6899  nla_put_failure:
6900  out:
6901         nlmsg_free(msg);
6902         return -ENOBUFS;
6903 }
6904
6905 static const struct nla_policy
6906 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6907         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6908                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6909         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6910                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6911         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6912                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6913         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6914                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6915         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6916         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6917         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6918         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6919         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6920                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6921         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6922         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6923         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6924         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6925         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6926                 NLA_POLICY_MIN(NLA_U16, 1),
6927         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6928                 NLA_POLICY_MIN(NLA_U16, 1),
6929         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6930                 NLA_POLICY_MIN(NLA_U16, 1),
6931         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6932         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6933                 NLA_POLICY_MIN(NLA_U16, 1),
6934         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6935         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6936         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6937                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6938         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6939         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6940         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6941                 NLA_POLICY_MIN(NLA_U16, 1),
6942         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6943                 NLA_POLICY_MIN(NLA_U16, 1),
6944         [NL80211_MESHCONF_POWER_MODE] =
6945                 NLA_POLICY_RANGE(NLA_U32,
6946                                  NL80211_MESH_POWER_ACTIVE,
6947                                  NL80211_MESH_POWER_MAX),
6948         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6949         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6950         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6951         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6952         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6953 };
6954
6955 static const struct nla_policy
6956         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6957         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6958         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6959         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6960         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6961         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6962         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6963         [NL80211_MESH_SETUP_IE] =
6964                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6965                                        IEEE80211_MAX_DATA_LEN),
6966         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6967 };
6968
6969 static int nl80211_parse_mesh_config(struct genl_info *info,
6970                                      struct mesh_config *cfg,
6971                                      u32 *mask_out)
6972 {
6973         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6974         u32 mask = 0;
6975         u16 ht_opmode;
6976
6977 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6978 do {                                                                    \
6979         if (tb[attr]) {                                                 \
6980                 cfg->param = fn(tb[attr]);                              \
6981                 mask |= BIT((attr) - 1);                                \
6982         }                                                               \
6983 } while (0)
6984
6985         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6986                 return -EINVAL;
6987         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6988                 return -EINVAL;
6989
6990         /* This makes sure that there aren't more than 32 mesh config
6991          * parameters (otherwise our bitfield scheme would not work.) */
6992         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6993
6994         /* Fill in the params struct */
6995         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6996                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6997         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6998                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6999                                   nla_get_u16);
7000         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7001                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7002                                   nla_get_u16);
7003         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7004                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7005                                   nla_get_u16);
7006         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7007                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7008         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7009                                   NL80211_MESHCONF_TTL, nla_get_u8);
7010         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7011                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7012         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7013                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7014                                   nla_get_u8);
7015         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7016                                   mask,
7017                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7018                                   nla_get_u32);
7019         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7020                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7021                                   nla_get_u8);
7022         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7023                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7024                                   nla_get_u32);
7025         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7026             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7027                 return -EINVAL;
7028         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7029                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7030                                   nla_get_u16);
7031         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7032                                   mask,
7033                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7034                                   nla_get_u32);
7035         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7036             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7037              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7038                 return -EINVAL;
7039         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7040                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7041                                   nla_get_u16);
7042         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7043                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7044                                   nla_get_u16);
7045         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7046                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7047                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7048                                   nla_get_u16);
7049         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7050                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7051         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7052                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7053                                   nla_get_u16);
7054         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7055                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7056                                   nla_get_u8);
7057         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7058                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7059         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7060                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7061                                   nla_get_s32);
7062         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7063                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7064                                   nla_get_u8);
7065         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7066                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7067                                   nla_get_u8);
7068         /*
7069          * Check HT operation mode based on
7070          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7071          */
7072         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7073                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7074
7075                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7076                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7077                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7078                         return -EINVAL;
7079
7080                 /* NON_HT_STA bit is reserved, but some programs set it */
7081                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7082
7083                 cfg->ht_opmode = ht_opmode;
7084                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7085         }
7086         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7087                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7088                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7089                                   nla_get_u32);
7090         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7091             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7092              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7093                 return -EINVAL;
7094         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7095                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7096                                   nla_get_u16);
7097         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7098                                   mask,
7099                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7100                                   nla_get_u16);
7101         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7102                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7103         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7104                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7105         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7106                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7107         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7108                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7109         if (mask_out)
7110                 *mask_out = mask;
7111
7112         return 0;
7113
7114 #undef FILL_IN_MESH_PARAM_IF_SET
7115 }
7116
7117 static int nl80211_parse_mesh_setup(struct genl_info *info,
7118                                      struct mesh_setup *setup)
7119 {
7120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7121         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7122
7123         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7124                 return -EINVAL;
7125         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7126                 return -EINVAL;
7127
7128         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7129                 setup->sync_method =
7130                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7131                  IEEE80211_SYNC_METHOD_VENDOR :
7132                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7133
7134         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7135                 setup->path_sel_proto =
7136                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7137                  IEEE80211_PATH_PROTOCOL_VENDOR :
7138                  IEEE80211_PATH_PROTOCOL_HWMP;
7139
7140         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7141                 setup->path_metric =
7142                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7143                  IEEE80211_PATH_METRIC_VENDOR :
7144                  IEEE80211_PATH_METRIC_AIRTIME;
7145
7146         if (tb[NL80211_MESH_SETUP_IE]) {
7147                 struct nlattr *ieattr =
7148                         tb[NL80211_MESH_SETUP_IE];
7149                 setup->ie = nla_data(ieattr);
7150                 setup->ie_len = nla_len(ieattr);
7151         }
7152         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7153             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7154                 return -EINVAL;
7155         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7156         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7157         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7158         if (setup->is_secure)
7159                 setup->user_mpm = true;
7160
7161         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7162                 if (!setup->user_mpm)
7163                         return -EINVAL;
7164                 setup->auth_id =
7165                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7166         }
7167
7168         return 0;
7169 }
7170
7171 static int nl80211_update_mesh_config(struct sk_buff *skb,
7172                                       struct genl_info *info)
7173 {
7174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7175         struct net_device *dev = info->user_ptr[1];
7176         struct wireless_dev *wdev = dev->ieee80211_ptr;
7177         struct mesh_config cfg;
7178         u32 mask;
7179         int err;
7180
7181         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7182                 return -EOPNOTSUPP;
7183
7184         if (!rdev->ops->update_mesh_config)
7185                 return -EOPNOTSUPP;
7186
7187         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7188         if (err)
7189                 return err;
7190
7191         wdev_lock(wdev);
7192         if (!wdev->mesh_id_len)
7193                 err = -ENOLINK;
7194
7195         if (!err)
7196                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7197
7198         wdev_unlock(wdev);
7199
7200         return err;
7201 }
7202
7203 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7204                               struct sk_buff *msg)
7205 {
7206         struct nlattr *nl_reg_rules;
7207         unsigned int i;
7208
7209         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7210             (regdom->dfs_region &&
7211              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7212                 goto nla_put_failure;
7213
7214         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7215         if (!nl_reg_rules)
7216                 goto nla_put_failure;
7217
7218         for (i = 0; i < regdom->n_reg_rules; i++) {
7219                 struct nlattr *nl_reg_rule;
7220                 const struct ieee80211_reg_rule *reg_rule;
7221                 const struct ieee80211_freq_range *freq_range;
7222                 const struct ieee80211_power_rule *power_rule;
7223                 unsigned int max_bandwidth_khz;
7224
7225                 reg_rule = &regdom->reg_rules[i];
7226                 freq_range = &reg_rule->freq_range;
7227                 power_rule = &reg_rule->power_rule;
7228
7229                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7230                 if (!nl_reg_rule)
7231                         goto nla_put_failure;
7232
7233                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7234                 if (!max_bandwidth_khz)
7235                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7236                                                                   reg_rule);
7237
7238                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7239                                 reg_rule->flags) ||
7240                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7241                                 freq_range->start_freq_khz) ||
7242                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7243                                 freq_range->end_freq_khz) ||
7244                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7245                                 max_bandwidth_khz) ||
7246                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7247                                 power_rule->max_antenna_gain) ||
7248                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7249                                 power_rule->max_eirp) ||
7250                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7251                                 reg_rule->dfs_cac_ms))
7252                         goto nla_put_failure;
7253
7254                 nla_nest_end(msg, nl_reg_rule);
7255         }
7256
7257         nla_nest_end(msg, nl_reg_rules);
7258         return 0;
7259
7260 nla_put_failure:
7261         return -EMSGSIZE;
7262 }
7263
7264 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7265 {
7266         const struct ieee80211_regdomain *regdom = NULL;
7267         struct cfg80211_registered_device *rdev;
7268         struct wiphy *wiphy = NULL;
7269         struct sk_buff *msg;
7270         void *hdr;
7271
7272         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7273         if (!msg)
7274                 return -ENOBUFS;
7275
7276         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7277                              NL80211_CMD_GET_REG);
7278         if (!hdr)
7279                 goto put_failure;
7280
7281         if (info->attrs[NL80211_ATTR_WIPHY]) {
7282                 bool self_managed;
7283
7284                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7285                 if (IS_ERR(rdev)) {
7286                         nlmsg_free(msg);
7287                         return PTR_ERR(rdev);
7288                 }
7289
7290                 wiphy = &rdev->wiphy;
7291                 self_managed = wiphy->regulatory_flags &
7292                                REGULATORY_WIPHY_SELF_MANAGED;
7293                 regdom = get_wiphy_regdom(wiphy);
7294
7295                 /* a self-managed-reg device must have a private regdom */
7296                 if (WARN_ON(!regdom && self_managed)) {
7297                         nlmsg_free(msg);
7298                         return -EINVAL;
7299                 }
7300
7301                 if (regdom &&
7302                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7303                         goto nla_put_failure;
7304         }
7305
7306         if (!wiphy && reg_last_request_cell_base() &&
7307             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7308                         NL80211_USER_REG_HINT_CELL_BASE))
7309                 goto nla_put_failure;
7310
7311         rcu_read_lock();
7312
7313         if (!regdom)
7314                 regdom = rcu_dereference(cfg80211_regdomain);
7315
7316         if (nl80211_put_regdom(regdom, msg))
7317                 goto nla_put_failure_rcu;
7318
7319         rcu_read_unlock();
7320
7321         genlmsg_end(msg, hdr);
7322         return genlmsg_reply(msg, info);
7323
7324 nla_put_failure_rcu:
7325         rcu_read_unlock();
7326 nla_put_failure:
7327 put_failure:
7328         nlmsg_free(msg);
7329         return -EMSGSIZE;
7330 }
7331
7332 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7333                                u32 seq, int flags, struct wiphy *wiphy,
7334                                const struct ieee80211_regdomain *regdom)
7335 {
7336         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7337                                    NL80211_CMD_GET_REG);
7338
7339         if (!hdr)
7340                 return -1;
7341
7342         genl_dump_check_consistent(cb, hdr);
7343
7344         if (nl80211_put_regdom(regdom, msg))
7345                 goto nla_put_failure;
7346
7347         if (!wiphy && reg_last_request_cell_base() &&
7348             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7349                         NL80211_USER_REG_HINT_CELL_BASE))
7350                 goto nla_put_failure;
7351
7352         if (wiphy &&
7353             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7354                 goto nla_put_failure;
7355
7356         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7357             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7358                 goto nla_put_failure;
7359
7360         genlmsg_end(msg, hdr);
7361         return 0;
7362
7363 nla_put_failure:
7364         genlmsg_cancel(msg, hdr);
7365         return -EMSGSIZE;
7366 }
7367
7368 static int nl80211_get_reg_dump(struct sk_buff *skb,
7369                                 struct netlink_callback *cb)
7370 {
7371         const struct ieee80211_regdomain *regdom = NULL;
7372         struct cfg80211_registered_device *rdev;
7373         int err, reg_idx, start = cb->args[2];
7374
7375         rtnl_lock();
7376
7377         if (cfg80211_regdomain && start == 0) {
7378                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7379                                           NLM_F_MULTI, NULL,
7380                                           rtnl_dereference(cfg80211_regdomain));
7381                 if (err < 0)
7382                         goto out_err;
7383         }
7384
7385         /* the global regdom is idx 0 */
7386         reg_idx = 1;
7387         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7388                 regdom = get_wiphy_regdom(&rdev->wiphy);
7389                 if (!regdom)
7390                         continue;
7391
7392                 if (++reg_idx <= start)
7393                         continue;
7394
7395                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7396                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7397                 if (err < 0) {
7398                         reg_idx--;
7399                         break;
7400                 }
7401         }
7402
7403         cb->args[2] = reg_idx;
7404         err = skb->len;
7405 out_err:
7406         rtnl_unlock();
7407         return err;
7408 }
7409
7410 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7411 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7412         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7413         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7414         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7415         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7416         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7417         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7418         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7419 };
7420
7421 static int parse_reg_rule(struct nlattr *tb[],
7422         struct ieee80211_reg_rule *reg_rule)
7423 {
7424         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7425         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7426
7427         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7428                 return -EINVAL;
7429         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7430                 return -EINVAL;
7431         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7432                 return -EINVAL;
7433         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7434                 return -EINVAL;
7435         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7436                 return -EINVAL;
7437
7438         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7439
7440         freq_range->start_freq_khz =
7441                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7442         freq_range->end_freq_khz =
7443                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7444         freq_range->max_bandwidth_khz =
7445                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7446
7447         power_rule->max_eirp =
7448                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7449
7450         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7451                 power_rule->max_antenna_gain =
7452                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7453
7454         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7455                 reg_rule->dfs_cac_ms =
7456                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7457
7458         return 0;
7459 }
7460
7461 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7462 {
7463         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7464         struct nlattr *nl_reg_rule;
7465         char *alpha2;
7466         int rem_reg_rules, r;
7467         u32 num_rules = 0, rule_idx = 0;
7468         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7469         struct ieee80211_regdomain *rd;
7470
7471         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7472                 return -EINVAL;
7473
7474         if (!info->attrs[NL80211_ATTR_REG_RULES])
7475                 return -EINVAL;
7476
7477         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7478
7479         if (info->attrs[NL80211_ATTR_DFS_REGION])
7480                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7481
7482         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7483                             rem_reg_rules) {
7484                 num_rules++;
7485                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7486                         return -EINVAL;
7487         }
7488
7489         if (!reg_is_valid_request(alpha2))
7490                 return -EINVAL;
7491
7492         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7493         if (!rd)
7494                 return -ENOMEM;
7495
7496         rd->n_reg_rules = num_rules;
7497         rd->alpha2[0] = alpha2[0];
7498         rd->alpha2[1] = alpha2[1];
7499
7500         /*
7501          * Disable DFS master mode if the DFS region was
7502          * not supported or known on this kernel.
7503          */
7504         if (reg_supported_dfs_region(dfs_region))
7505                 rd->dfs_region = dfs_region;
7506
7507         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7508                             rem_reg_rules) {
7509                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7510                                                 nl_reg_rule, reg_rule_policy,
7511                                                 info->extack);
7512                 if (r)
7513                         goto bad_reg;
7514                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7515                 if (r)
7516                         goto bad_reg;
7517
7518                 rule_idx++;
7519
7520                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7521                         r = -EINVAL;
7522                         goto bad_reg;
7523                 }
7524         }
7525
7526         /* set_regdom takes ownership of rd */
7527         return set_regdom(rd, REGD_SOURCE_CRDA);
7528  bad_reg:
7529         kfree(rd);
7530         return r;
7531 }
7532 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7533
7534 static int validate_scan_freqs(struct nlattr *freqs)
7535 {
7536         struct nlattr *attr1, *attr2;
7537         int n_channels = 0, tmp1, tmp2;
7538
7539         nla_for_each_nested(attr1, freqs, tmp1)
7540                 if (nla_len(attr1) != sizeof(u32))
7541                         return 0;
7542
7543         nla_for_each_nested(attr1, freqs, tmp1) {
7544                 n_channels++;
7545                 /*
7546                  * Some hardware has a limited channel list for
7547                  * scanning, and it is pretty much nonsensical
7548                  * to scan for a channel twice, so disallow that
7549                  * and don't require drivers to check that the
7550                  * channel list they get isn't longer than what
7551                  * they can scan, as long as they can scan all
7552                  * the channels they registered at once.
7553                  */
7554                 nla_for_each_nested(attr2, freqs, tmp2)
7555                         if (attr1 != attr2 &&
7556                             nla_get_u32(attr1) == nla_get_u32(attr2))
7557                                 return 0;
7558         }
7559
7560         return n_channels;
7561 }
7562
7563 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7564 {
7565         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7566 }
7567
7568 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7569                             struct cfg80211_bss_selection *bss_select)
7570 {
7571         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7572         struct nlattr *nest;
7573         int err;
7574         bool found = false;
7575         int i;
7576
7577         /* only process one nested attribute */
7578         nest = nla_data(nla);
7579         if (!nla_ok(nest, nla_len(nest)))
7580                 return -EINVAL;
7581
7582         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7583                                           nest, nl80211_bss_select_policy,
7584                                           NULL);
7585         if (err)
7586                 return err;
7587
7588         /* only one attribute may be given */
7589         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7590                 if (attr[i]) {
7591                         if (found)
7592                                 return -EINVAL;
7593                         found = true;
7594                 }
7595         }
7596
7597         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7598
7599         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7600                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7601
7602         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7603                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7604                 bss_select->param.band_pref =
7605                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7606                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7607                         return -EINVAL;
7608         }
7609
7610         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7611                 struct nl80211_bss_select_rssi_adjust *adj_param;
7612
7613                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7614                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7615                 bss_select->param.adjust.band = adj_param->band;
7616                 bss_select->param.adjust.delta = adj_param->delta;
7617                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7618                         return -EINVAL;
7619         }
7620
7621         /* user-space did not provide behaviour attribute */
7622         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7623                 return -EINVAL;
7624
7625         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7626                 return -EINVAL;
7627
7628         return 0;
7629 }
7630
7631 int nl80211_parse_random_mac(struct nlattr **attrs,
7632                              u8 *mac_addr, u8 *mac_addr_mask)
7633 {
7634         int i;
7635
7636         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7637                 eth_zero_addr(mac_addr);
7638                 eth_zero_addr(mac_addr_mask);
7639                 mac_addr[0] = 0x2;
7640                 mac_addr_mask[0] = 0x3;
7641
7642                 return 0;
7643         }
7644
7645         /* need both or none */
7646         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7647                 return -EINVAL;
7648
7649         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7650         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7651
7652         /* don't allow or configure an mcast address */
7653         if (!is_multicast_ether_addr(mac_addr_mask) ||
7654             is_multicast_ether_addr(mac_addr))
7655                 return -EINVAL;
7656
7657         /*
7658          * allow users to pass a MAC address that has bits set outside
7659          * of the mask, but don't bother drivers with having to deal
7660          * with such bits
7661          */
7662         for (i = 0; i < ETH_ALEN; i++)
7663                 mac_addr[i] &= mac_addr_mask[i];
7664
7665         return 0;
7666 }
7667
7668 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7669 {
7670         ASSERT_WDEV_LOCK(wdev);
7671
7672         if (!cfg80211_beaconing_iface_active(wdev))
7673                 return true;
7674
7675         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7676                 return true;
7677
7678         return regulatory_pre_cac_allowed(wdev->wiphy);
7679 }
7680
7681 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7682                                     enum nl80211_ext_feature_index feat)
7683 {
7684         if (!(flags & flag))
7685                 return true;
7686         if (wiphy_ext_feature_isset(wiphy, feat))
7687                 return true;
7688         return false;
7689 }
7690
7691 static int
7692 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7693                          void *request, struct nlattr **attrs,
7694                          bool is_sched_scan)
7695 {
7696         u8 *mac_addr, *mac_addr_mask;
7697         u32 *flags;
7698         enum nl80211_feature_flags randomness_flag;
7699
7700         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7701                 return 0;
7702
7703         if (is_sched_scan) {
7704                 struct cfg80211_sched_scan_request *req = request;
7705
7706                 randomness_flag = wdev ?
7707                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7708                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7709                 flags = &req->flags;
7710                 mac_addr = req->mac_addr;
7711                 mac_addr_mask = req->mac_addr_mask;
7712         } else {
7713                 struct cfg80211_scan_request *req = request;
7714
7715                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7716                 flags = &req->flags;
7717                 mac_addr = req->mac_addr;
7718                 mac_addr_mask = req->mac_addr_mask;
7719         }
7720
7721         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7722
7723         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7724              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7725             !nl80211_check_scan_feat(wiphy, *flags,
7726                                      NL80211_SCAN_FLAG_LOW_SPAN,
7727                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7728             !nl80211_check_scan_feat(wiphy, *flags,
7729                                      NL80211_SCAN_FLAG_LOW_POWER,
7730                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7731             !nl80211_check_scan_feat(wiphy, *flags,
7732                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7733                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7734             !nl80211_check_scan_feat(wiphy, *flags,
7735                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7736                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7737             !nl80211_check_scan_feat(wiphy, *flags,
7738                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7739                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7740             !nl80211_check_scan_feat(wiphy, *flags,
7741                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7742                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7743             !nl80211_check_scan_feat(wiphy, *flags,
7744                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7745                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7746             !nl80211_check_scan_feat(wiphy, *flags,
7747                                      NL80211_SCAN_FLAG_RANDOM_SN,
7748                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7749             !nl80211_check_scan_feat(wiphy, *flags,
7750                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7751                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7752                 return -EOPNOTSUPP;
7753
7754         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7755                 int err;
7756
7757                 if (!(wiphy->features & randomness_flag) ||
7758                     (wdev && wdev->current_bss))
7759                         return -EOPNOTSUPP;
7760
7761                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7762                 if (err)
7763                         return err;
7764         }
7765
7766         return 0;
7767 }
7768
7769 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7770 {
7771         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7772         struct wireless_dev *wdev = info->user_ptr[1];
7773         struct cfg80211_scan_request *request;
7774         struct nlattr *scan_freqs = NULL;
7775         bool scan_freqs_khz = false;
7776         struct nlattr *attr;
7777         struct wiphy *wiphy;
7778         int err, tmp, n_ssids = 0, n_channels, i;
7779         size_t ie_len;
7780
7781         wiphy = &rdev->wiphy;
7782
7783         if (wdev->iftype == NL80211_IFTYPE_NAN)
7784                 return -EOPNOTSUPP;
7785
7786         if (!rdev->ops->scan)
7787                 return -EOPNOTSUPP;
7788
7789         if (rdev->scan_req || rdev->scan_msg)
7790                 return -EBUSY;
7791
7792         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
7793                 if (!wiphy_ext_feature_isset(wiphy,
7794                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
7795                         return -EOPNOTSUPP;
7796                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
7797                 scan_freqs_khz = true;
7798         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
7799                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
7800
7801         if (scan_freqs) {
7802                 n_channels = validate_scan_freqs(scan_freqs);
7803                 if (!n_channels)
7804                         return -EINVAL;
7805         } else {
7806                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7807         }
7808
7809         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7810                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7811                         n_ssids++;
7812
7813         if (n_ssids > wiphy->max_scan_ssids)
7814                 return -EINVAL;
7815
7816         if (info->attrs[NL80211_ATTR_IE])
7817                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7818         else
7819                 ie_len = 0;
7820
7821         if (ie_len > wiphy->max_scan_ie_len)
7822                 return -EINVAL;
7823
7824         request = kzalloc(sizeof(*request)
7825                         + sizeof(*request->ssids) * n_ssids
7826                         + sizeof(*request->channels) * n_channels
7827                         + ie_len, GFP_KERNEL);
7828         if (!request)
7829                 return -ENOMEM;
7830
7831         if (n_ssids)
7832                 request->ssids = (void *)&request->channels[n_channels];
7833         request->n_ssids = n_ssids;
7834         if (ie_len) {
7835                 if (n_ssids)
7836                         request->ie = (void *)(request->ssids + n_ssids);
7837                 else
7838                         request->ie = (void *)(request->channels + n_channels);
7839         }
7840
7841         i = 0;
7842         if (scan_freqs) {
7843                 /* user specified, bail out if channel not found */
7844                 nla_for_each_nested(attr, scan_freqs, tmp) {
7845                         struct ieee80211_channel *chan;
7846                         int freq = nla_get_u32(attr);
7847
7848                         if (!scan_freqs_khz)
7849                                 freq = MHZ_TO_KHZ(freq);
7850
7851                         chan = ieee80211_get_channel_khz(wiphy, freq);
7852                         if (!chan) {
7853                                 err = -EINVAL;
7854                                 goto out_free;
7855                         }
7856
7857                         /* ignore disabled channels */
7858                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7859                                 continue;
7860
7861                         request->channels[i] = chan;
7862                         i++;
7863                 }
7864         } else {
7865                 enum nl80211_band band;
7866
7867                 /* all channels */
7868                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7869                         int j;
7870
7871                         if (!wiphy->bands[band])
7872                                 continue;
7873                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7874                                 struct ieee80211_channel *chan;
7875
7876                                 chan = &wiphy->bands[band]->channels[j];
7877
7878                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7879                                         continue;
7880
7881                                 request->channels[i] = chan;
7882                                 i++;
7883                         }
7884                 }
7885         }
7886
7887         if (!i) {
7888                 err = -EINVAL;
7889                 goto out_free;
7890         }
7891
7892         request->n_channels = i;
7893
7894         wdev_lock(wdev);
7895         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7896                 struct ieee80211_channel *chan;
7897
7898                 if (request->n_channels != 1) {
7899                         wdev_unlock(wdev);
7900                         err = -EBUSY;
7901                         goto out_free;
7902                 }
7903
7904                 chan = request->channels[0];
7905                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7906                         wdev_unlock(wdev);
7907                         err = -EBUSY;
7908                         goto out_free;
7909                 }
7910         }
7911         wdev_unlock(wdev);
7912
7913         i = 0;
7914         if (n_ssids) {
7915                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7916                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7917                                 err = -EINVAL;
7918                                 goto out_free;
7919                         }
7920                         request->ssids[i].ssid_len = nla_len(attr);
7921                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7922                         i++;
7923                 }
7924         }
7925
7926         if (info->attrs[NL80211_ATTR_IE]) {
7927                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7928                 memcpy((void *)request->ie,
7929                        nla_data(info->attrs[NL80211_ATTR_IE]),
7930                        request->ie_len);
7931         }
7932
7933         for (i = 0; i < NUM_NL80211_BANDS; i++)
7934                 if (wiphy->bands[i])
7935                         request->rates[i] =
7936                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7937
7938         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7939                 nla_for_each_nested(attr,
7940                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7941                                     tmp) {
7942                         enum nl80211_band band = nla_type(attr);
7943
7944                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7945                                 err = -EINVAL;
7946                                 goto out_free;
7947                         }
7948
7949                         if (!wiphy->bands[band])
7950                                 continue;
7951
7952                         err = ieee80211_get_ratemask(wiphy->bands[band],
7953                                                      nla_data(attr),
7954                                                      nla_len(attr),
7955                                                      &request->rates[band]);
7956                         if (err)
7957                                 goto out_free;
7958                 }
7959         }
7960
7961         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7962                 if (!wiphy_ext_feature_isset(wiphy,
7963                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7964                         err = -EOPNOTSUPP;
7965                         goto out_free;
7966                 }
7967
7968                 request->duration =
7969                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7970                 request->duration_mandatory =
7971                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7972         }
7973
7974         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7975                                        false);
7976         if (err)
7977                 goto out_free;
7978
7979         request->no_cck =
7980                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7981
7982         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7983          * BSSID to scan for. This was problematic because that same attribute
7984          * was already used for another purpose (local random MAC address). The
7985          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7986          * compatibility with older userspace components, also use the
7987          * NL80211_ATTR_MAC value here if it can be determined to be used for
7988          * the specific BSSID use case instead of the random MAC address
7989          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7990          */
7991         if (info->attrs[NL80211_ATTR_BSSID])
7992                 memcpy(request->bssid,
7993                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7994         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7995                  info->attrs[NL80211_ATTR_MAC])
7996                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7997                        ETH_ALEN);
7998         else
7999                 eth_broadcast_addr(request->bssid);
8000
8001         request->wdev = wdev;
8002         request->wiphy = &rdev->wiphy;
8003         request->scan_start = jiffies;
8004
8005         rdev->scan_req = request;
8006         err = rdev_scan(rdev, request);
8007
8008         if (err)
8009                 goto out_free;
8010
8011         nl80211_send_scan_start(rdev, wdev);
8012         if (wdev->netdev)
8013                 dev_hold(wdev->netdev);
8014
8015         return 0;
8016
8017  out_free:
8018         rdev->scan_req = NULL;
8019         kfree(request);
8020
8021         return err;
8022 }
8023
8024 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8025 {
8026         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8027         struct wireless_dev *wdev = info->user_ptr[1];
8028
8029         if (!rdev->ops->abort_scan)
8030                 return -EOPNOTSUPP;
8031
8032         if (rdev->scan_msg)
8033                 return 0;
8034
8035         if (!rdev->scan_req)
8036                 return -ENOENT;
8037
8038         rdev_abort_scan(rdev, wdev);
8039         return 0;
8040 }
8041
8042 static int
8043 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8044                                struct cfg80211_sched_scan_request *request,
8045                                struct nlattr **attrs)
8046 {
8047         int tmp, err, i = 0;
8048         struct nlattr *attr;
8049
8050         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8051                 u32 interval;
8052
8053                 /*
8054                  * If scan plans are not specified,
8055                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8056                  * case one scan plan will be set with the specified scan
8057                  * interval and infinite number of iterations.
8058                  */
8059                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8060                 if (!interval)
8061                         return -EINVAL;
8062
8063                 request->scan_plans[0].interval =
8064                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8065                 if (!request->scan_plans[0].interval)
8066                         return -EINVAL;
8067
8068                 if (request->scan_plans[0].interval >
8069                     wiphy->max_sched_scan_plan_interval)
8070                         request->scan_plans[0].interval =
8071                                 wiphy->max_sched_scan_plan_interval;
8072
8073                 return 0;
8074         }
8075
8076         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8077                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8078
8079                 if (WARN_ON(i >= n_plans))
8080                         return -EINVAL;
8081
8082                 err = nla_parse_nested_deprecated(plan,
8083                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8084                                                   attr, nl80211_plan_policy,
8085                                                   NULL);
8086                 if (err)
8087                         return err;
8088
8089                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8090                         return -EINVAL;
8091
8092                 request->scan_plans[i].interval =
8093                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8094                 if (!request->scan_plans[i].interval ||
8095                     request->scan_plans[i].interval >
8096                     wiphy->max_sched_scan_plan_interval)
8097                         return -EINVAL;
8098
8099                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8100                         request->scan_plans[i].iterations =
8101                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8102                         if (!request->scan_plans[i].iterations ||
8103                             (request->scan_plans[i].iterations >
8104                              wiphy->max_sched_scan_plan_iterations))
8105                                 return -EINVAL;
8106                 } else if (i < n_plans - 1) {
8107                         /*
8108                          * All scan plans but the last one must specify
8109                          * a finite number of iterations
8110                          */
8111                         return -EINVAL;
8112                 }
8113
8114                 i++;
8115         }
8116
8117         /*
8118          * The last scan plan must not specify the number of
8119          * iterations, it is supposed to run infinitely
8120          */
8121         if (request->scan_plans[n_plans - 1].iterations)
8122                 return  -EINVAL;
8123
8124         return 0;
8125 }
8126
8127 static int
8128 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8129                                        struct cfg80211_match_set *match_sets,
8130                                        struct nlattr *tb_band_rssi,
8131                                        s32 rssi_thold)
8132 {
8133         struct nlattr *attr;
8134         int i, tmp, ret = 0;
8135
8136         if (!wiphy_ext_feature_isset(wiphy,
8137                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8138                 if (tb_band_rssi)
8139                         ret = -EOPNOTSUPP;
8140                 else
8141                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8142                                 match_sets->per_band_rssi_thold[i] =
8143                                         NL80211_SCAN_RSSI_THOLD_OFF;
8144                 return ret;
8145         }
8146
8147         for (i = 0; i < NUM_NL80211_BANDS; i++)
8148                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8149
8150         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8151                 enum nl80211_band band = nla_type(attr);
8152
8153                 if (band < 0 || band >= NUM_NL80211_BANDS)
8154                         return -EINVAL;
8155
8156                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8157         }
8158
8159         return 0;
8160 }
8161
8162 static struct cfg80211_sched_scan_request *
8163 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8164                          struct nlattr **attrs, int max_match_sets)
8165 {
8166         struct cfg80211_sched_scan_request *request;
8167         struct nlattr *attr;
8168         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8169         enum nl80211_band band;
8170         size_t ie_len;
8171         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8172         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8173
8174         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8175                 n_channels = validate_scan_freqs(
8176                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8177                 if (!n_channels)
8178                         return ERR_PTR(-EINVAL);
8179         } else {
8180                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8181         }
8182
8183         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8184                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8185                                     tmp)
8186                         n_ssids++;
8187
8188         if (n_ssids > wiphy->max_sched_scan_ssids)
8189                 return ERR_PTR(-EINVAL);
8190
8191         /*
8192          * First, count the number of 'real' matchsets. Due to an issue with
8193          * the old implementation, matchsets containing only the RSSI attribute
8194          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8195          * RSSI for all matchsets, rather than their own matchset for reporting
8196          * all APs with a strong RSSI. This is needed to be compatible with
8197          * older userspace that treated a matchset with only the RSSI as the
8198          * global RSSI for all other matchsets - if there are other matchsets.
8199          */
8200         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8201                 nla_for_each_nested(attr,
8202                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8203                                     tmp) {
8204                         struct nlattr *rssi;
8205
8206                         err = nla_parse_nested_deprecated(tb,
8207                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8208                                                           attr,
8209                                                           nl80211_match_policy,
8210                                                           NULL);
8211                         if (err)
8212                                 return ERR_PTR(err);
8213
8214                         /* SSID and BSSID are mutually exclusive */
8215                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8216                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8217                                 return ERR_PTR(-EINVAL);
8218
8219                         /* add other standalone attributes here */
8220                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8221                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8222                                 n_match_sets++;
8223                                 continue;
8224                         }
8225                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8226                         if (rssi)
8227                                 default_match_rssi = nla_get_s32(rssi);
8228                 }
8229         }
8230
8231         /* However, if there's no other matchset, add the RSSI one */
8232         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8233                 n_match_sets = 1;
8234
8235         if (n_match_sets > max_match_sets)
8236                 return ERR_PTR(-EINVAL);
8237
8238         if (attrs[NL80211_ATTR_IE])
8239                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8240         else
8241                 ie_len = 0;
8242
8243         if (ie_len > wiphy->max_sched_scan_ie_len)
8244                 return ERR_PTR(-EINVAL);
8245
8246         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8247                 /*
8248                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8249                  * each scan plan already specifies its own interval
8250                  */
8251                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8252                         return ERR_PTR(-EINVAL);
8253
8254                 nla_for_each_nested(attr,
8255                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8256                         n_plans++;
8257         } else {
8258                 /*
8259                  * The scan interval attribute is kept for backward
8260                  * compatibility. If no scan plans are specified and sched scan
8261                  * interval is specified, one scan plan will be set with this
8262                  * scan interval and infinite number of iterations.
8263                  */
8264                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8265                         return ERR_PTR(-EINVAL);
8266
8267                 n_plans = 1;
8268         }
8269
8270         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8271                 return ERR_PTR(-EINVAL);
8272
8273         if (!wiphy_ext_feature_isset(
8274                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8275             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8276              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8277                 return ERR_PTR(-EINVAL);
8278
8279         request = kzalloc(sizeof(*request)
8280                         + sizeof(*request->ssids) * n_ssids
8281                         + sizeof(*request->match_sets) * n_match_sets
8282                         + sizeof(*request->scan_plans) * n_plans
8283                         + sizeof(*request->channels) * n_channels
8284                         + ie_len, GFP_KERNEL);
8285         if (!request)
8286                 return ERR_PTR(-ENOMEM);
8287
8288         if (n_ssids)
8289                 request->ssids = (void *)&request->channels[n_channels];
8290         request->n_ssids = n_ssids;
8291         if (ie_len) {
8292                 if (n_ssids)
8293                         request->ie = (void *)(request->ssids + n_ssids);
8294                 else
8295                         request->ie = (void *)(request->channels + n_channels);
8296         }
8297
8298         if (n_match_sets) {
8299                 if (request->ie)
8300                         request->match_sets = (void *)(request->ie + ie_len);
8301                 else if (n_ssids)
8302                         request->match_sets =
8303                                 (void *)(request->ssids + n_ssids);
8304                 else
8305                         request->match_sets =
8306                                 (void *)(request->channels + n_channels);
8307         }
8308         request->n_match_sets = n_match_sets;
8309
8310         if (n_match_sets)
8311                 request->scan_plans = (void *)(request->match_sets +
8312                                                n_match_sets);
8313         else if (request->ie)
8314                 request->scan_plans = (void *)(request->ie + ie_len);
8315         else if (n_ssids)
8316                 request->scan_plans = (void *)(request->ssids + n_ssids);
8317         else
8318                 request->scan_plans = (void *)(request->channels + n_channels);
8319
8320         request->n_scan_plans = n_plans;
8321
8322         i = 0;
8323         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8324                 /* user specified, bail out if channel not found */
8325                 nla_for_each_nested(attr,
8326                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8327                                     tmp) {
8328                         struct ieee80211_channel *chan;
8329
8330                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8331
8332                         if (!chan) {
8333                                 err = -EINVAL;
8334                                 goto out_free;
8335                         }
8336
8337                         /* ignore disabled channels */
8338                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8339                                 continue;
8340
8341                         request->channels[i] = chan;
8342                         i++;
8343                 }
8344         } else {
8345                 /* all channels */
8346                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8347                         int j;
8348
8349                         if (!wiphy->bands[band])
8350                                 continue;
8351                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8352                                 struct ieee80211_channel *chan;
8353
8354                                 chan = &wiphy->bands[band]->channels[j];
8355
8356                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8357                                         continue;
8358
8359                                 request->channels[i] = chan;
8360                                 i++;
8361                         }
8362                 }
8363         }
8364
8365         if (!i) {
8366                 err = -EINVAL;
8367                 goto out_free;
8368         }
8369
8370         request->n_channels = i;
8371
8372         i = 0;
8373         if (n_ssids) {
8374                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8375                                     tmp) {
8376                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8377                                 err = -EINVAL;
8378                                 goto out_free;
8379                         }
8380                         request->ssids[i].ssid_len = nla_len(attr);
8381                         memcpy(request->ssids[i].ssid, nla_data(attr),
8382                                nla_len(attr));
8383                         i++;
8384                 }
8385         }
8386
8387         i = 0;
8388         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8389                 nla_for_each_nested(attr,
8390                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8391                                     tmp) {
8392                         struct nlattr *ssid, *bssid, *rssi;
8393
8394                         err = nla_parse_nested_deprecated(tb,
8395                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8396                                                           attr,
8397                                                           nl80211_match_policy,
8398                                                           NULL);
8399                         if (err)
8400                                 goto out_free;
8401                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8402                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8403
8404                         if (!ssid && !bssid) {
8405                                 i++;
8406                                 continue;
8407                         }
8408
8409                         if (WARN_ON(i >= n_match_sets)) {
8410                                 /* this indicates a programming error,
8411                                  * the loop above should have verified
8412                                  * things properly
8413                                  */
8414                                 err = -EINVAL;
8415                                 goto out_free;
8416                         }
8417
8418                         if (ssid) {
8419                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8420                                         err = -EINVAL;
8421                                         goto out_free;
8422                                 }
8423                                 memcpy(request->match_sets[i].ssid.ssid,
8424                                        nla_data(ssid), nla_len(ssid));
8425                                 request->match_sets[i].ssid.ssid_len =
8426                                         nla_len(ssid);
8427                         }
8428                         if (bssid) {
8429                                 if (nla_len(bssid) != ETH_ALEN) {
8430                                         err = -EINVAL;
8431                                         goto out_free;
8432                                 }
8433                                 memcpy(request->match_sets[i].bssid,
8434                                        nla_data(bssid), ETH_ALEN);
8435                         }
8436
8437                         /* special attribute - old implementation w/a */
8438                         request->match_sets[i].rssi_thold = default_match_rssi;
8439                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8440                         if (rssi)
8441                                 request->match_sets[i].rssi_thold =
8442                                         nla_get_s32(rssi);
8443
8444                         /* Parse per band RSSI attribute */
8445                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8446                                 &request->match_sets[i],
8447                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8448                                 request->match_sets[i].rssi_thold);
8449                         if (err)
8450                                 goto out_free;
8451
8452                         i++;
8453                 }
8454
8455                 /* there was no other matchset, so the RSSI one is alone */
8456                 if (i == 0 && n_match_sets)
8457                         request->match_sets[0].rssi_thold = default_match_rssi;
8458
8459                 request->min_rssi_thold = INT_MAX;
8460                 for (i = 0; i < n_match_sets; i++)
8461                         request->min_rssi_thold =
8462                                 min(request->match_sets[i].rssi_thold,
8463                                     request->min_rssi_thold);
8464         } else {
8465                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8466         }
8467
8468         if (ie_len) {
8469                 request->ie_len = ie_len;
8470                 memcpy((void *)request->ie,
8471                        nla_data(attrs[NL80211_ATTR_IE]),
8472                        request->ie_len);
8473         }
8474
8475         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8476         if (err)
8477                 goto out_free;
8478
8479         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8480                 request->delay =
8481                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8482
8483         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8484                 request->relative_rssi = nla_get_s8(
8485                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8486                 request->relative_rssi_set = true;
8487         }
8488
8489         if (request->relative_rssi_set &&
8490             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8491                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8492
8493                 rssi_adjust = nla_data(
8494                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8495                 request->rssi_adjust.band = rssi_adjust->band;
8496                 request->rssi_adjust.delta = rssi_adjust->delta;
8497                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8498                         err = -EINVAL;
8499                         goto out_free;
8500                 }
8501         }
8502
8503         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8504         if (err)
8505                 goto out_free;
8506
8507         request->scan_start = jiffies;
8508
8509         return request;
8510
8511 out_free:
8512         kfree(request);
8513         return ERR_PTR(err);
8514 }
8515
8516 static int nl80211_start_sched_scan(struct sk_buff *skb,
8517                                     struct genl_info *info)
8518 {
8519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8520         struct net_device *dev = info->user_ptr[1];
8521         struct wireless_dev *wdev = dev->ieee80211_ptr;
8522         struct cfg80211_sched_scan_request *sched_scan_req;
8523         bool want_multi;
8524         int err;
8525
8526         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8527                 return -EOPNOTSUPP;
8528
8529         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8530         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8531         if (err)
8532                 return err;
8533
8534         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8535                                                   info->attrs,
8536                                                   rdev->wiphy.max_match_sets);
8537
8538         err = PTR_ERR_OR_ZERO(sched_scan_req);
8539         if (err)
8540                 goto out_err;
8541
8542         /* leave request id zero for legacy request
8543          * or if driver does not support multi-scheduled scan
8544          */
8545         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8546                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8547
8548         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8549         if (err)
8550                 goto out_free;
8551
8552         sched_scan_req->dev = dev;
8553         sched_scan_req->wiphy = &rdev->wiphy;
8554
8555         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8556                 sched_scan_req->owner_nlportid = info->snd_portid;
8557
8558         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8559
8560         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8561         return 0;
8562
8563 out_free:
8564         kfree(sched_scan_req);
8565 out_err:
8566         return err;
8567 }
8568
8569 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8570                                    struct genl_info *info)
8571 {
8572         struct cfg80211_sched_scan_request *req;
8573         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8574         u64 cookie;
8575
8576         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8577                 return -EOPNOTSUPP;
8578
8579         if (info->attrs[NL80211_ATTR_COOKIE]) {
8580                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8581                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8582         }
8583
8584         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8585                                      struct cfg80211_sched_scan_request,
8586                                      list);
8587         if (!req || req->reqid ||
8588             (req->owner_nlportid &&
8589              req->owner_nlportid != info->snd_portid))
8590                 return -ENOENT;
8591
8592         return cfg80211_stop_sched_scan_req(rdev, req, false);
8593 }
8594
8595 static int nl80211_start_radar_detection(struct sk_buff *skb,
8596                                          struct genl_info *info)
8597 {
8598         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8599         struct net_device *dev = info->user_ptr[1];
8600         struct wireless_dev *wdev = dev->ieee80211_ptr;
8601         struct wiphy *wiphy = wdev->wiphy;
8602         struct cfg80211_chan_def chandef;
8603         enum nl80211_dfs_regions dfs_region;
8604         unsigned int cac_time_ms;
8605         int err;
8606
8607         dfs_region = reg_get_dfs_region(wiphy);
8608         if (dfs_region == NL80211_DFS_UNSET)
8609                 return -EINVAL;
8610
8611         err = nl80211_parse_chandef(rdev, info, &chandef);
8612         if (err)
8613                 return err;
8614
8615         if (netif_carrier_ok(dev))
8616                 return -EBUSY;
8617
8618         if (wdev->cac_started)
8619                 return -EBUSY;
8620
8621         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8622         if (err < 0)
8623                 return err;
8624
8625         if (err == 0)
8626                 return -EINVAL;
8627
8628         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8629                 return -EINVAL;
8630
8631         /* CAC start is offloaded to HW and can't be started manually */
8632         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8633                 return -EOPNOTSUPP;
8634
8635         if (!rdev->ops->start_radar_detection)
8636                 return -EOPNOTSUPP;
8637
8638         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8639         if (WARN_ON(!cac_time_ms))
8640                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8641
8642         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8643         if (!err) {
8644                 wdev->chandef = chandef;
8645                 wdev->cac_started = true;
8646                 wdev->cac_start_time = jiffies;
8647                 wdev->cac_time_ms = cac_time_ms;
8648         }
8649         return err;
8650 }
8651
8652 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8653                                           struct genl_info *info)
8654 {
8655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8656         struct net_device *dev = info->user_ptr[1];
8657         struct wireless_dev *wdev = dev->ieee80211_ptr;
8658         struct wiphy *wiphy = wdev->wiphy;
8659         struct cfg80211_chan_def chandef;
8660         enum nl80211_dfs_regions dfs_region;
8661         int err;
8662
8663         dfs_region = reg_get_dfs_region(wiphy);
8664         if (dfs_region == NL80211_DFS_UNSET) {
8665                 GENL_SET_ERR_MSG(info,
8666                                  "DFS Region is not set. Unexpected Radar indication");
8667                 return -EINVAL;
8668         }
8669
8670         err = nl80211_parse_chandef(rdev, info, &chandef);
8671         if (err) {
8672                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8673                 return err;
8674         }
8675
8676         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8677         if (err < 0) {
8678                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8679                 return err;
8680         }
8681
8682         if (err == 0) {
8683                 GENL_SET_ERR_MSG(info,
8684                                  "Unexpected Radar indication for chandef/iftype");
8685                 return -EINVAL;
8686         }
8687
8688         /* Do not process this notification if radar is already detected
8689          * by kernel on this channel, and return success.
8690          */
8691         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8692                 return 0;
8693
8694         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8695
8696         cfg80211_sched_dfs_chan_update(rdev);
8697
8698         rdev->radar_chandef = chandef;
8699
8700         /* Propagate this notification to other radios as well */
8701         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8702
8703         return 0;
8704 }
8705
8706 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8707 {
8708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8709         struct net_device *dev = info->user_ptr[1];
8710         struct wireless_dev *wdev = dev->ieee80211_ptr;
8711         struct cfg80211_csa_settings params;
8712         /* csa_attrs is defined static to avoid waste of stack size - this
8713          * function is called under RTNL lock, so this should not be a problem.
8714          */
8715         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8716         int err;
8717         bool need_new_beacon = false;
8718         bool need_handle_dfs_flag = true;
8719         int len, i;
8720         u32 cs_count;
8721
8722         if (!rdev->ops->channel_switch ||
8723             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8724                 return -EOPNOTSUPP;
8725
8726         switch (dev->ieee80211_ptr->iftype) {
8727         case NL80211_IFTYPE_AP:
8728         case NL80211_IFTYPE_P2P_GO:
8729                 need_new_beacon = true;
8730                 /* For all modes except AP the handle_dfs flag needs to be
8731                  * supplied to tell the kernel that userspace will handle radar
8732                  * events when they happen. Otherwise a switch to a channel
8733                  * requiring DFS will be rejected.
8734                  */
8735                 need_handle_dfs_flag = false;
8736
8737                 /* useless if AP is not running */
8738                 if (!wdev->beacon_interval)
8739                         return -ENOTCONN;
8740                 break;
8741         case NL80211_IFTYPE_ADHOC:
8742                 if (!wdev->ssid_len)
8743                         return -ENOTCONN;
8744                 break;
8745         case NL80211_IFTYPE_MESH_POINT:
8746                 if (!wdev->mesh_id_len)
8747                         return -ENOTCONN;
8748                 break;
8749         default:
8750                 return -EOPNOTSUPP;
8751         }
8752
8753         memset(&params, 0, sizeof(params));
8754         params.beacon_csa.ftm_responder = -1;
8755
8756         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8757             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8758                 return -EINVAL;
8759
8760         /* only important for AP, IBSS and mesh create IEs internally */
8761         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8762                 return -EINVAL;
8763
8764         /* Even though the attribute is u32, the specification says
8765          * u8, so let's make sure we don't overflow.
8766          */
8767         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8768         if (cs_count > 255)
8769                 return -EINVAL;
8770
8771         params.count = cs_count;
8772
8773         if (!need_new_beacon)
8774                 goto skip_beacons;
8775
8776         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8777         if (err)
8778                 return err;
8779
8780         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8781                                           info->attrs[NL80211_ATTR_CSA_IES],
8782                                           nl80211_policy, info->extack);
8783         if (err)
8784                 return err;
8785
8786         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8787         if (err)
8788                 return err;
8789
8790         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8791                 return -EINVAL;
8792
8793         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8794         if (!len || (len % sizeof(u16)))
8795                 return -EINVAL;
8796
8797         params.n_counter_offsets_beacon = len / sizeof(u16);
8798         if (rdev->wiphy.max_num_csa_counters &&
8799             (params.n_counter_offsets_beacon >
8800              rdev->wiphy.max_num_csa_counters))
8801                 return -EINVAL;
8802
8803         params.counter_offsets_beacon =
8804                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8805
8806         /* sanity checks - counters should fit and be the same */
8807         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8808                 u16 offset = params.counter_offsets_beacon[i];
8809
8810                 if (offset >= params.beacon_csa.tail_len)
8811                         return -EINVAL;
8812
8813                 if (params.beacon_csa.tail[offset] != params.count)
8814                         return -EINVAL;
8815         }
8816
8817         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8818                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8819                 if (!len || (len % sizeof(u16)))
8820                         return -EINVAL;
8821
8822                 params.n_counter_offsets_presp = len / sizeof(u16);
8823                 if (rdev->wiphy.max_num_csa_counters &&
8824                     (params.n_counter_offsets_presp >
8825                      rdev->wiphy.max_num_csa_counters))
8826                         return -EINVAL;
8827
8828                 params.counter_offsets_presp =
8829                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8830
8831                 /* sanity checks - counters should fit and be the same */
8832                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8833                         u16 offset = params.counter_offsets_presp[i];
8834
8835                         if (offset >= params.beacon_csa.probe_resp_len)
8836                                 return -EINVAL;
8837
8838                         if (params.beacon_csa.probe_resp[offset] !=
8839                             params.count)
8840                                 return -EINVAL;
8841                 }
8842         }
8843
8844 skip_beacons:
8845         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8846         if (err)
8847                 return err;
8848
8849         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8850                                            wdev->iftype))
8851                 return -EINVAL;
8852
8853         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8854                                             &params.chandef,
8855                                             wdev->iftype);
8856         if (err < 0)
8857                 return err;
8858
8859         if (err > 0) {
8860                 params.radar_required = true;
8861                 if (need_handle_dfs_flag &&
8862                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8863                         return -EINVAL;
8864                 }
8865         }
8866
8867         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8868                 params.block_tx = true;
8869
8870         wdev_lock(wdev);
8871         err = rdev_channel_switch(rdev, dev, &params);
8872         wdev_unlock(wdev);
8873
8874         return err;
8875 }
8876
8877 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8878                             u32 seq, int flags,
8879                             struct cfg80211_registered_device *rdev,
8880                             struct wireless_dev *wdev,
8881                             struct cfg80211_internal_bss *intbss)
8882 {
8883         struct cfg80211_bss *res = &intbss->pub;
8884         const struct cfg80211_bss_ies *ies;
8885         void *hdr;
8886         struct nlattr *bss;
8887
8888         ASSERT_WDEV_LOCK(wdev);
8889
8890         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8891                              NL80211_CMD_NEW_SCAN_RESULTS);
8892         if (!hdr)
8893                 return -1;
8894
8895         genl_dump_check_consistent(cb, hdr);
8896
8897         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8898                 goto nla_put_failure;
8899         if (wdev->netdev &&
8900             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8901                 goto nla_put_failure;
8902         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8903                               NL80211_ATTR_PAD))
8904                 goto nla_put_failure;
8905
8906         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8907         if (!bss)
8908                 goto nla_put_failure;
8909         if ((!is_zero_ether_addr(res->bssid) &&
8910              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8911                 goto nla_put_failure;
8912
8913         rcu_read_lock();
8914         /* indicate whether we have probe response data or not */
8915         if (rcu_access_pointer(res->proberesp_ies) &&
8916             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8917                 goto fail_unlock_rcu;
8918
8919         /* this pointer prefers to be pointed to probe response data
8920          * but is always valid
8921          */
8922         ies = rcu_dereference(res->ies);
8923         if (ies) {
8924                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8925                                       NL80211_BSS_PAD))
8926                         goto fail_unlock_rcu;
8927                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8928                                         ies->len, ies->data))
8929                         goto fail_unlock_rcu;
8930         }
8931
8932         /* and this pointer is always (unless driver didn't know) beacon data */
8933         ies = rcu_dereference(res->beacon_ies);
8934         if (ies && ies->from_beacon) {
8935                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8936                                       NL80211_BSS_PAD))
8937                         goto fail_unlock_rcu;
8938                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8939                                         ies->len, ies->data))
8940                         goto fail_unlock_rcu;
8941         }
8942         rcu_read_unlock();
8943
8944         if (res->beacon_interval &&
8945             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8946                 goto nla_put_failure;
8947         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8948             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8949             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
8950                         res->channel->freq_offset) ||
8951             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8952             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8953                         jiffies_to_msecs(jiffies - intbss->ts)))
8954                 goto nla_put_failure;
8955
8956         if (intbss->parent_tsf &&
8957             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8958                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8959              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8960                      intbss->parent_bssid)))
8961                 goto nla_put_failure;
8962
8963         if (intbss->ts_boottime &&
8964             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8965                               intbss->ts_boottime, NL80211_BSS_PAD))
8966                 goto nla_put_failure;
8967
8968         if (!nl80211_put_signal(msg, intbss->pub.chains,
8969                                 intbss->pub.chain_signal,
8970                                 NL80211_BSS_CHAIN_SIGNAL))
8971                 goto nla_put_failure;
8972
8973         switch (rdev->wiphy.signal_type) {
8974         case CFG80211_SIGNAL_TYPE_MBM:
8975                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8976                         goto nla_put_failure;
8977                 break;
8978         case CFG80211_SIGNAL_TYPE_UNSPEC:
8979                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8980                         goto nla_put_failure;
8981                 break;
8982         default:
8983                 break;
8984         }
8985
8986         switch (wdev->iftype) {
8987         case NL80211_IFTYPE_P2P_CLIENT:
8988         case NL80211_IFTYPE_STATION:
8989                 if (intbss == wdev->current_bss &&
8990                     nla_put_u32(msg, NL80211_BSS_STATUS,
8991                                 NL80211_BSS_STATUS_ASSOCIATED))
8992                         goto nla_put_failure;
8993                 break;
8994         case NL80211_IFTYPE_ADHOC:
8995                 if (intbss == wdev->current_bss &&
8996                     nla_put_u32(msg, NL80211_BSS_STATUS,
8997                                 NL80211_BSS_STATUS_IBSS_JOINED))
8998                         goto nla_put_failure;
8999                 break;
9000         default:
9001                 break;
9002         }
9003
9004         nla_nest_end(msg, bss);
9005
9006         genlmsg_end(msg, hdr);
9007         return 0;
9008
9009  fail_unlock_rcu:
9010         rcu_read_unlock();
9011  nla_put_failure:
9012         genlmsg_cancel(msg, hdr);
9013         return -EMSGSIZE;
9014 }
9015
9016 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9017 {
9018         struct cfg80211_registered_device *rdev;
9019         struct cfg80211_internal_bss *scan;
9020         struct wireless_dev *wdev;
9021         int start = cb->args[2], idx = 0;
9022         int err;
9023
9024         rtnl_lock();
9025         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9026         if (err) {
9027                 rtnl_unlock();
9028                 return err;
9029         }
9030
9031         wdev_lock(wdev);
9032         spin_lock_bh(&rdev->bss_lock);
9033
9034         /*
9035          * dump_scan will be called multiple times to break up the scan results
9036          * into multiple messages.  It is unlikely that any more bss-es will be
9037          * expired after the first call, so only call only call this on the
9038          * first dump_scan invocation.
9039          */
9040         if (start == 0)
9041                 cfg80211_bss_expire(rdev);
9042
9043         cb->seq = rdev->bss_generation;
9044
9045         list_for_each_entry(scan, &rdev->bss_list, list) {
9046                 if (++idx <= start)
9047                         continue;
9048                 if (nl80211_send_bss(skb, cb,
9049                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9050                                 rdev, wdev, scan) < 0) {
9051                         idx--;
9052                         break;
9053                 }
9054         }
9055
9056         spin_unlock_bh(&rdev->bss_lock);
9057         wdev_unlock(wdev);
9058
9059         cb->args[2] = idx;
9060         rtnl_unlock();
9061
9062         return skb->len;
9063 }
9064
9065 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9066                                int flags, struct net_device *dev,
9067                                bool allow_radio_stats,
9068                                struct survey_info *survey)
9069 {
9070         void *hdr;
9071         struct nlattr *infoattr;
9072
9073         /* skip radio stats if userspace didn't request them */
9074         if (!survey->channel && !allow_radio_stats)
9075                 return 0;
9076
9077         hdr = nl80211hdr_put(msg, portid, seq, flags,
9078                              NL80211_CMD_NEW_SURVEY_RESULTS);
9079         if (!hdr)
9080                 return -ENOMEM;
9081
9082         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9083                 goto nla_put_failure;
9084
9085         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9086         if (!infoattr)
9087                 goto nla_put_failure;
9088
9089         if (survey->channel &&
9090             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9091                         survey->channel->center_freq))
9092                 goto nla_put_failure;
9093
9094         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9095             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9096                 goto nla_put_failure;
9097         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9098             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9099                 goto nla_put_failure;
9100         if ((survey->filled & SURVEY_INFO_TIME) &&
9101             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9102                         survey->time, NL80211_SURVEY_INFO_PAD))
9103                 goto nla_put_failure;
9104         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9105             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9106                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9107                 goto nla_put_failure;
9108         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9109             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9110                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9111                 goto nla_put_failure;
9112         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9113             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9114                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9115                 goto nla_put_failure;
9116         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9117             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9118                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9119                 goto nla_put_failure;
9120         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9121             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9122                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9123                 goto nla_put_failure;
9124         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9125             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9126                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9127                 goto nla_put_failure;
9128
9129         nla_nest_end(msg, infoattr);
9130
9131         genlmsg_end(msg, hdr);
9132         return 0;
9133
9134  nla_put_failure:
9135         genlmsg_cancel(msg, hdr);
9136         return -EMSGSIZE;
9137 }
9138
9139 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9140 {
9141         struct nlattr **attrbuf;
9142         struct survey_info survey;
9143         struct cfg80211_registered_device *rdev;
9144         struct wireless_dev *wdev;
9145         int survey_idx = cb->args[2];
9146         int res;
9147         bool radio_stats;
9148
9149         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9150         if (!attrbuf)
9151                 return -ENOMEM;
9152
9153         rtnl_lock();
9154         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9155         if (res)
9156                 goto out_err;
9157
9158         /* prepare_wdev_dump parsed the attributes */
9159         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9160
9161         if (!wdev->netdev) {
9162                 res = -EINVAL;
9163                 goto out_err;
9164         }
9165
9166         if (!rdev->ops->dump_survey) {
9167                 res = -EOPNOTSUPP;
9168                 goto out_err;
9169         }
9170
9171         while (1) {
9172                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9173                 if (res == -ENOENT)
9174                         break;
9175                 if (res)
9176                         goto out_err;
9177
9178                 /* don't send disabled channels, but do send non-channel data */
9179                 if (survey.channel &&
9180                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9181                         survey_idx++;
9182                         continue;
9183                 }
9184
9185                 if (nl80211_send_survey(skb,
9186                                 NETLINK_CB(cb->skb).portid,
9187                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9188                                 wdev->netdev, radio_stats, &survey) < 0)
9189                         goto out;
9190                 survey_idx++;
9191         }
9192
9193  out:
9194         cb->args[2] = survey_idx;
9195         res = skb->len;
9196  out_err:
9197         kfree(attrbuf);
9198         rtnl_unlock();
9199         return res;
9200 }
9201
9202 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9203 {
9204         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9205                                   NL80211_WPA_VERSION_2 |
9206                                   NL80211_WPA_VERSION_3));
9207 }
9208
9209 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9210 {
9211         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9212         struct net_device *dev = info->user_ptr[1];
9213         struct ieee80211_channel *chan;
9214         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9215         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9216         enum nl80211_auth_type auth_type;
9217         struct key_parse key;
9218         bool local_state_change;
9219         u32 freq;
9220
9221         if (!info->attrs[NL80211_ATTR_MAC])
9222                 return -EINVAL;
9223
9224         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9225                 return -EINVAL;
9226
9227         if (!info->attrs[NL80211_ATTR_SSID])
9228                 return -EINVAL;
9229
9230         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9231                 return -EINVAL;
9232
9233         err = nl80211_parse_key(info, &key);
9234         if (err)
9235                 return err;
9236
9237         if (key.idx >= 0) {
9238                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9239                         return -EINVAL;
9240                 if (!key.p.key || !key.p.key_len)
9241                         return -EINVAL;
9242                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9243                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9244                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9245                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9246                         return -EINVAL;
9247                 if (key.idx > 3)
9248                         return -EINVAL;
9249         } else {
9250                 key.p.key_len = 0;
9251                 key.p.key = NULL;
9252         }
9253
9254         if (key.idx >= 0) {
9255                 int i;
9256                 bool ok = false;
9257
9258                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9259                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9260                                 ok = true;
9261                                 break;
9262                         }
9263                 }
9264                 if (!ok)
9265                         return -EINVAL;
9266         }
9267
9268         if (!rdev->ops->auth)
9269                 return -EOPNOTSUPP;
9270
9271         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9272             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9273                 return -EOPNOTSUPP;
9274
9275         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9276         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9277         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9278                 freq +=
9279                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9280
9281         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9282         if (!chan)
9283                 return -EINVAL;
9284
9285         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9286         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9287
9288         if (info->attrs[NL80211_ATTR_IE]) {
9289                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9290                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9291         }
9292
9293         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9294         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9295                 return -EINVAL;
9296
9297         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9298              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9299              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9300              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9301             !info->attrs[NL80211_ATTR_AUTH_DATA])
9302                 return -EINVAL;
9303
9304         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9305                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9306                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9307                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9308                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9309                         return -EINVAL;
9310                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9311                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9312                 /* need to include at least Auth Transaction and Status Code */
9313                 if (auth_data_len < 4)
9314                         return -EINVAL;
9315         }
9316
9317         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9318
9319         /*
9320          * Since we no longer track auth state, ignore
9321          * requests to only change local state.
9322          */
9323         if (local_state_change)
9324                 return 0;
9325
9326         wdev_lock(dev->ieee80211_ptr);
9327         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9328                                  ssid, ssid_len, ie, ie_len,
9329                                  key.p.key, key.p.key_len, key.idx,
9330                                  auth_data, auth_data_len);
9331         wdev_unlock(dev->ieee80211_ptr);
9332         return err;
9333 }
9334
9335 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9336                                      struct genl_info *info)
9337 {
9338         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9339                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9340                 return -EINVAL;
9341         }
9342
9343         if (!rdev->ops->tx_control_port ||
9344             !wiphy_ext_feature_isset(&rdev->wiphy,
9345                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9346                 return -EOPNOTSUPP;
9347
9348         return 0;
9349 }
9350
9351 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9352                                    struct genl_info *info,
9353                                    struct cfg80211_crypto_settings *settings,
9354                                    int cipher_limit)
9355 {
9356         memset(settings, 0, sizeof(*settings));
9357
9358         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9359
9360         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9361                 u16 proto;
9362
9363                 proto = nla_get_u16(
9364                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9365                 settings->control_port_ethertype = cpu_to_be16(proto);
9366                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9367                     proto != ETH_P_PAE)
9368                         return -EINVAL;
9369                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9370                         settings->control_port_no_encrypt = true;
9371         } else
9372                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9373
9374         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9375                 int r = validate_pae_over_nl80211(rdev, info);
9376
9377                 if (r < 0)
9378                         return r;
9379
9380                 settings->control_port_over_nl80211 = true;
9381
9382                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9383                         settings->control_port_no_preauth = true;
9384         }
9385
9386         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9387                 void *data;
9388                 int len, i;
9389
9390                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9391                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9392                 settings->n_ciphers_pairwise = len / sizeof(u32);
9393
9394                 if (len % sizeof(u32))
9395                         return -EINVAL;
9396
9397                 if (settings->n_ciphers_pairwise > cipher_limit)
9398                         return -EINVAL;
9399
9400                 memcpy(settings->ciphers_pairwise, data, len);
9401
9402                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9403                         if (!cfg80211_supported_cipher_suite(
9404                                         &rdev->wiphy,
9405                                         settings->ciphers_pairwise[i]))
9406                                 return -EINVAL;
9407         }
9408
9409         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9410                 settings->cipher_group =
9411                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9412                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9413                                                      settings->cipher_group))
9414                         return -EINVAL;
9415         }
9416
9417         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9418                 settings->wpa_versions =
9419                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9420                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9421                         return -EINVAL;
9422         }
9423
9424         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9425                 void *data;
9426                 int len;
9427
9428                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9429                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9430                 settings->n_akm_suites = len / sizeof(u32);
9431
9432                 if (len % sizeof(u32))
9433                         return -EINVAL;
9434
9435                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9436                         return -EINVAL;
9437
9438                 memcpy(settings->akm_suites, data, len);
9439         }
9440
9441         if (info->attrs[NL80211_ATTR_PMK]) {
9442                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9443                         return -EINVAL;
9444                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9445                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9446                     !wiphy_ext_feature_isset(&rdev->wiphy,
9447                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9448                         return -EINVAL;
9449                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9450         }
9451
9452         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9453                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9454                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9455                         return -EINVAL;
9456                 settings->sae_pwd =
9457                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9458                 settings->sae_pwd_len =
9459                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9460         }
9461
9462         return 0;
9463 }
9464
9465 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9466 {
9467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9468         struct net_device *dev = info->user_ptr[1];
9469         struct ieee80211_channel *chan;
9470         struct cfg80211_assoc_request req = {};
9471         const u8 *bssid, *ssid;
9472         int err, ssid_len = 0;
9473         u32 freq;
9474
9475         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9476             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9477                 return -EPERM;
9478
9479         if (!info->attrs[NL80211_ATTR_MAC] ||
9480             !info->attrs[NL80211_ATTR_SSID] ||
9481             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9482                 return -EINVAL;
9483
9484         if (!rdev->ops->assoc)
9485                 return -EOPNOTSUPP;
9486
9487         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9488             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9489                 return -EOPNOTSUPP;
9490
9491         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9492
9493         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9494         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9495                 freq +=
9496                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9497         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9498         if (!chan)
9499                 return -EINVAL;
9500
9501         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9502         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9503
9504         if (info->attrs[NL80211_ATTR_IE]) {
9505                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9506                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9507         }
9508
9509         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9510                 enum nl80211_mfp mfp =
9511                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9512                 if (mfp == NL80211_MFP_REQUIRED)
9513                         req.use_mfp = true;
9514                 else if (mfp != NL80211_MFP_NO)
9515                         return -EINVAL;
9516         }
9517
9518         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9519                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9520
9521         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9522                 req.flags |= ASSOC_REQ_DISABLE_HT;
9523
9524         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9525                 memcpy(&req.ht_capa_mask,
9526                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9527                        sizeof(req.ht_capa_mask));
9528
9529         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9530                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9531                         return -EINVAL;
9532                 memcpy(&req.ht_capa,
9533                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9534                        sizeof(req.ht_capa));
9535         }
9536
9537         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9538                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9539
9540         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9541                 memcpy(&req.vht_capa_mask,
9542                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9543                        sizeof(req.vht_capa_mask));
9544
9545         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9546                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9547                         return -EINVAL;
9548                 memcpy(&req.vht_capa,
9549                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9550                        sizeof(req.vht_capa));
9551         }
9552
9553         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9554                 if (!((rdev->wiphy.features &
9555                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9556                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9557                     !wiphy_ext_feature_isset(&rdev->wiphy,
9558                                              NL80211_EXT_FEATURE_RRM))
9559                         return -EINVAL;
9560                 req.flags |= ASSOC_REQ_USE_RRM;
9561         }
9562
9563         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9564                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9565                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9566                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9567                         return -EINVAL;
9568                 req.fils_nonces =
9569                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9570         }
9571
9572         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9573         if (!err) {
9574                 wdev_lock(dev->ieee80211_ptr);
9575
9576                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9577                                           ssid, ssid_len, &req);
9578
9579                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9580                         dev->ieee80211_ptr->conn_owner_nlportid =
9581                                 info->snd_portid;
9582                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9583                                bssid, ETH_ALEN);
9584                 }
9585
9586                 wdev_unlock(dev->ieee80211_ptr);
9587         }
9588
9589         return err;
9590 }
9591
9592 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9593 {
9594         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9595         struct net_device *dev = info->user_ptr[1];
9596         const u8 *ie = NULL, *bssid;
9597         int ie_len = 0, err;
9598         u16 reason_code;
9599         bool local_state_change;
9600
9601         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9602             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9603                 return -EPERM;
9604
9605         if (!info->attrs[NL80211_ATTR_MAC])
9606                 return -EINVAL;
9607
9608         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9609                 return -EINVAL;
9610
9611         if (!rdev->ops->deauth)
9612                 return -EOPNOTSUPP;
9613
9614         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9615             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9616                 return -EOPNOTSUPP;
9617
9618         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9619
9620         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9621         if (reason_code == 0) {
9622                 /* Reason Code 0 is reserved */
9623                 return -EINVAL;
9624         }
9625
9626         if (info->attrs[NL80211_ATTR_IE]) {
9627                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9628                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9629         }
9630
9631         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9632
9633         wdev_lock(dev->ieee80211_ptr);
9634         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9635                                    local_state_change);
9636         wdev_unlock(dev->ieee80211_ptr);
9637         return err;
9638 }
9639
9640 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9641 {
9642         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9643         struct net_device *dev = info->user_ptr[1];
9644         const u8 *ie = NULL, *bssid;
9645         int ie_len = 0, err;
9646         u16 reason_code;
9647         bool local_state_change;
9648
9649         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9650             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9651                 return -EPERM;
9652
9653         if (!info->attrs[NL80211_ATTR_MAC])
9654                 return -EINVAL;
9655
9656         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9657                 return -EINVAL;
9658
9659         if (!rdev->ops->disassoc)
9660                 return -EOPNOTSUPP;
9661
9662         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9663             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9664                 return -EOPNOTSUPP;
9665
9666         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9667
9668         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9669         if (reason_code == 0) {
9670                 /* Reason Code 0 is reserved */
9671                 return -EINVAL;
9672         }
9673
9674         if (info->attrs[NL80211_ATTR_IE]) {
9675                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9676                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9677         }
9678
9679         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9680
9681         wdev_lock(dev->ieee80211_ptr);
9682         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9683                                      local_state_change);
9684         wdev_unlock(dev->ieee80211_ptr);
9685         return err;
9686 }
9687
9688 static bool
9689 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9690                          int mcast_rate[NUM_NL80211_BANDS],
9691                          int rateval)
9692 {
9693         struct wiphy *wiphy = &rdev->wiphy;
9694         bool found = false;
9695         int band, i;
9696
9697         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9698                 struct ieee80211_supported_band *sband;
9699
9700                 sband = wiphy->bands[band];
9701                 if (!sband)
9702                         continue;
9703
9704                 for (i = 0; i < sband->n_bitrates; i++) {
9705                         if (sband->bitrates[i].bitrate == rateval) {
9706                                 mcast_rate[band] = i + 1;
9707                                 found = true;
9708                                 break;
9709                         }
9710                 }
9711         }
9712
9713         return found;
9714 }
9715
9716 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9717 {
9718         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9719         struct net_device *dev = info->user_ptr[1];
9720         struct cfg80211_ibss_params ibss;
9721         struct wiphy *wiphy;
9722         struct cfg80211_cached_keys *connkeys = NULL;
9723         int err;
9724
9725         memset(&ibss, 0, sizeof(ibss));
9726
9727         if (!info->attrs[NL80211_ATTR_SSID] ||
9728             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9729                 return -EINVAL;
9730
9731         ibss.beacon_interval = 100;
9732
9733         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9734                 ibss.beacon_interval =
9735                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9736
9737         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9738                                            ibss.beacon_interval);
9739         if (err)
9740                 return err;
9741
9742         if (!rdev->ops->join_ibss)
9743                 return -EOPNOTSUPP;
9744
9745         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9746                 return -EOPNOTSUPP;
9747
9748         wiphy = &rdev->wiphy;
9749
9750         if (info->attrs[NL80211_ATTR_MAC]) {
9751                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9752
9753                 if (!is_valid_ether_addr(ibss.bssid))
9754                         return -EINVAL;
9755         }
9756         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9757         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9758
9759         if (info->attrs[NL80211_ATTR_IE]) {
9760                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9761                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9762         }
9763
9764         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9765         if (err)
9766                 return err;
9767
9768         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9769                                      NL80211_IFTYPE_ADHOC))
9770                 return -EINVAL;
9771
9772         switch (ibss.chandef.width) {
9773         case NL80211_CHAN_WIDTH_5:
9774         case NL80211_CHAN_WIDTH_10:
9775         case NL80211_CHAN_WIDTH_20_NOHT:
9776                 break;
9777         case NL80211_CHAN_WIDTH_20:
9778         case NL80211_CHAN_WIDTH_40:
9779                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9780                         return -EINVAL;
9781                 break;
9782         case NL80211_CHAN_WIDTH_80:
9783         case NL80211_CHAN_WIDTH_80P80:
9784         case NL80211_CHAN_WIDTH_160:
9785                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9786                         return -EINVAL;
9787                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9788                                              NL80211_EXT_FEATURE_VHT_IBSS))
9789                         return -EINVAL;
9790                 break;
9791         default:
9792                 return -EINVAL;
9793         }
9794
9795         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9796         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9797
9798         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9799                 u8 *rates =
9800                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9801                 int n_rates =
9802                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9803                 struct ieee80211_supported_band *sband =
9804                         wiphy->bands[ibss.chandef.chan->band];
9805
9806                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9807                                              &ibss.basic_rates);
9808                 if (err)
9809                         return err;
9810         }
9811
9812         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9813                 memcpy(&ibss.ht_capa_mask,
9814                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9815                        sizeof(ibss.ht_capa_mask));
9816
9817         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9818                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9819                         return -EINVAL;
9820                 memcpy(&ibss.ht_capa,
9821                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9822                        sizeof(ibss.ht_capa));
9823         }
9824
9825         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9826             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9827                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9828                 return -EINVAL;
9829
9830         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9831                 bool no_ht = false;
9832
9833                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9834                 if (IS_ERR(connkeys))
9835                         return PTR_ERR(connkeys);
9836
9837                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9838                     no_ht) {
9839                         kfree_sensitive(connkeys);
9840                         return -EINVAL;
9841                 }
9842         }
9843
9844         ibss.control_port =
9845                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9846
9847         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9848                 int r = validate_pae_over_nl80211(rdev, info);
9849
9850                 if (r < 0) {
9851                         kfree_sensitive(connkeys);
9852                         return r;
9853                 }
9854
9855                 ibss.control_port_over_nl80211 = true;
9856         }
9857
9858         ibss.userspace_handles_dfs =
9859                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9860
9861         wdev_lock(dev->ieee80211_ptr);
9862         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9863         if (err)
9864                 kfree_sensitive(connkeys);
9865         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9866                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9867         wdev_unlock(dev->ieee80211_ptr);
9868
9869         return err;
9870 }
9871
9872 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9873 {
9874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9875         struct net_device *dev = info->user_ptr[1];
9876
9877         if (!rdev->ops->leave_ibss)
9878                 return -EOPNOTSUPP;
9879
9880         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9881                 return -EOPNOTSUPP;
9882
9883         return cfg80211_leave_ibss(rdev, dev, false);
9884 }
9885
9886 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9887 {
9888         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9889         struct net_device *dev = info->user_ptr[1];
9890         int mcast_rate[NUM_NL80211_BANDS];
9891         u32 nla_rate;
9892         int err;
9893
9894         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9895             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9896             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9897                 return -EOPNOTSUPP;
9898
9899         if (!rdev->ops->set_mcast_rate)
9900                 return -EOPNOTSUPP;
9901
9902         memset(mcast_rate, 0, sizeof(mcast_rate));
9903
9904         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9905                 return -EINVAL;
9906
9907         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9908         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9909                 return -EINVAL;
9910
9911         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9912
9913         return err;
9914 }
9915
9916 static struct sk_buff *
9917 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9918                             struct wireless_dev *wdev, int approxlen,
9919                             u32 portid, u32 seq, enum nl80211_commands cmd,
9920                             enum nl80211_attrs attr,
9921                             const struct nl80211_vendor_cmd_info *info,
9922                             gfp_t gfp)
9923 {
9924         struct sk_buff *skb;
9925         void *hdr;
9926         struct nlattr *data;
9927
9928         skb = nlmsg_new(approxlen + 100, gfp);
9929         if (!skb)
9930                 return NULL;
9931
9932         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9933         if (!hdr) {
9934                 kfree_skb(skb);
9935                 return NULL;
9936         }
9937
9938         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9939                 goto nla_put_failure;
9940
9941         if (info) {
9942                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9943                                 info->vendor_id))
9944                         goto nla_put_failure;
9945                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9946                                 info->subcmd))
9947                         goto nla_put_failure;
9948         }
9949
9950         if (wdev) {
9951                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9952                                       wdev_id(wdev), NL80211_ATTR_PAD))
9953                         goto nla_put_failure;
9954                 if (wdev->netdev &&
9955                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9956                                 wdev->netdev->ifindex))
9957                         goto nla_put_failure;
9958         }
9959
9960         data = nla_nest_start_noflag(skb, attr);
9961         if (!data)
9962                 goto nla_put_failure;
9963
9964         ((void **)skb->cb)[0] = rdev;
9965         ((void **)skb->cb)[1] = hdr;
9966         ((void **)skb->cb)[2] = data;
9967
9968         return skb;
9969
9970  nla_put_failure:
9971         kfree_skb(skb);
9972         return NULL;
9973 }
9974
9975 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9976                                            struct wireless_dev *wdev,
9977                                            enum nl80211_commands cmd,
9978                                            enum nl80211_attrs attr,
9979                                            unsigned int portid,
9980                                            int vendor_event_idx,
9981                                            int approxlen, gfp_t gfp)
9982 {
9983         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9984         const struct nl80211_vendor_cmd_info *info;
9985
9986         switch (cmd) {
9987         case NL80211_CMD_TESTMODE:
9988                 if (WARN_ON(vendor_event_idx != -1))
9989                         return NULL;
9990                 info = NULL;
9991                 break;
9992         case NL80211_CMD_VENDOR:
9993                 if (WARN_ON(vendor_event_idx < 0 ||
9994                             vendor_event_idx >= wiphy->n_vendor_events))
9995                         return NULL;
9996                 info = &wiphy->vendor_events[vendor_event_idx];
9997                 break;
9998         default:
9999                 WARN_ON(1);
10000                 return NULL;
10001         }
10002
10003         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10004                                            cmd, attr, info, gfp);
10005 }
10006 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10007
10008 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10009 {
10010         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10011         void *hdr = ((void **)skb->cb)[1];
10012         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10013         struct nlattr *data = ((void **)skb->cb)[2];
10014         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10015
10016         /* clear CB data for netlink core to own from now on */
10017         memset(skb->cb, 0, sizeof(skb->cb));
10018
10019         nla_nest_end(skb, data);
10020         genlmsg_end(skb, hdr);
10021
10022         if (nlhdr->nlmsg_pid) {
10023                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10024                                 nlhdr->nlmsg_pid);
10025         } else {
10026                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10027                         mcgrp = NL80211_MCGRP_VENDOR;
10028
10029                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10030                                         skb, 0, mcgrp, gfp);
10031         }
10032 }
10033 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10034
10035 #ifdef CONFIG_NL80211_TESTMODE
10036 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10037 {
10038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10039         struct wireless_dev *wdev =
10040                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10041         int err;
10042
10043         if (!rdev->ops->testmode_cmd)
10044                 return -EOPNOTSUPP;
10045
10046         if (IS_ERR(wdev)) {
10047                 err = PTR_ERR(wdev);
10048                 if (err != -EINVAL)
10049                         return err;
10050                 wdev = NULL;
10051         } else if (wdev->wiphy != &rdev->wiphy) {
10052                 return -EINVAL;
10053         }
10054
10055         if (!info->attrs[NL80211_ATTR_TESTDATA])
10056                 return -EINVAL;
10057
10058         rdev->cur_cmd_info = info;
10059         err = rdev_testmode_cmd(rdev, wdev,
10060                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10061                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10062         rdev->cur_cmd_info = NULL;
10063
10064         return err;
10065 }
10066
10067 static int nl80211_testmode_dump(struct sk_buff *skb,
10068                                  struct netlink_callback *cb)
10069 {
10070         struct cfg80211_registered_device *rdev;
10071         struct nlattr **attrbuf = NULL;
10072         int err;
10073         long phy_idx;
10074         void *data = NULL;
10075         int data_len = 0;
10076
10077         rtnl_lock();
10078
10079         if (cb->args[0]) {
10080                 /*
10081                  * 0 is a valid index, but not valid for args[0],
10082                  * so we need to offset by 1.
10083                  */
10084                 phy_idx = cb->args[0] - 1;
10085
10086                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10087                 if (!rdev) {
10088                         err = -ENOENT;
10089                         goto out_err;
10090                 }
10091         } else {
10092                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10093                                   GFP_KERNEL);
10094                 if (!attrbuf) {
10095                         err = -ENOMEM;
10096                         goto out_err;
10097                 }
10098
10099                 err = nlmsg_parse_deprecated(cb->nlh,
10100                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10101                                              attrbuf, nl80211_fam.maxattr,
10102                                              nl80211_policy, NULL);
10103                 if (err)
10104                         goto out_err;
10105
10106                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10107                 if (IS_ERR(rdev)) {
10108                         err = PTR_ERR(rdev);
10109                         goto out_err;
10110                 }
10111                 phy_idx = rdev->wiphy_idx;
10112
10113                 if (attrbuf[NL80211_ATTR_TESTDATA])
10114                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10115         }
10116
10117         if (cb->args[1]) {
10118                 data = nla_data((void *)cb->args[1]);
10119                 data_len = nla_len((void *)cb->args[1]);
10120         }
10121
10122         if (!rdev->ops->testmode_dump) {
10123                 err = -EOPNOTSUPP;
10124                 goto out_err;
10125         }
10126
10127         while (1) {
10128                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10129                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10130                                            NL80211_CMD_TESTMODE);
10131                 struct nlattr *tmdata;
10132
10133                 if (!hdr)
10134                         break;
10135
10136                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10137                         genlmsg_cancel(skb, hdr);
10138                         break;
10139                 }
10140
10141                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10142                 if (!tmdata) {
10143                         genlmsg_cancel(skb, hdr);
10144                         break;
10145                 }
10146                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10147                 nla_nest_end(skb, tmdata);
10148
10149                 if (err == -ENOBUFS || err == -ENOENT) {
10150                         genlmsg_cancel(skb, hdr);
10151                         break;
10152                 } else if (err) {
10153                         genlmsg_cancel(skb, hdr);
10154                         goto out_err;
10155                 }
10156
10157                 genlmsg_end(skb, hdr);
10158         }
10159
10160         err = skb->len;
10161         /* see above */
10162         cb->args[0] = phy_idx + 1;
10163  out_err:
10164         kfree(attrbuf);
10165         rtnl_unlock();
10166         return err;
10167 }
10168 #endif
10169
10170 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10171 {
10172         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10173         struct net_device *dev = info->user_ptr[1];
10174         struct cfg80211_connect_params connect;
10175         struct wiphy *wiphy;
10176         struct cfg80211_cached_keys *connkeys = NULL;
10177         u32 freq = 0;
10178         int err;
10179
10180         memset(&connect, 0, sizeof(connect));
10181
10182         if (!info->attrs[NL80211_ATTR_SSID] ||
10183             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10184                 return -EINVAL;
10185
10186         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10187                 connect.auth_type =
10188                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10189                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10190                                              NL80211_CMD_CONNECT))
10191                         return -EINVAL;
10192         } else
10193                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10194
10195         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10196
10197         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10198             !wiphy_ext_feature_isset(&rdev->wiphy,
10199                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10200                 return -EINVAL;
10201         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10202
10203         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10204                                       NL80211_MAX_NR_CIPHER_SUITES);
10205         if (err)
10206                 return err;
10207
10208         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10209             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10210                 return -EOPNOTSUPP;
10211
10212         wiphy = &rdev->wiphy;
10213
10214         connect.bg_scan_period = -1;
10215         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10216                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10217                 connect.bg_scan_period =
10218                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10219         }
10220
10221         if (info->attrs[NL80211_ATTR_MAC])
10222                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10223         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10224                 connect.bssid_hint =
10225                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10226         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10227         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10228
10229         if (info->attrs[NL80211_ATTR_IE]) {
10230                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10231                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10232         }
10233
10234         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10235                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10236                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10237                     !wiphy_ext_feature_isset(&rdev->wiphy,
10238                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10239                         return -EOPNOTSUPP;
10240         } else {
10241                 connect.mfp = NL80211_MFP_NO;
10242         }
10243
10244         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10245                 connect.prev_bssid =
10246                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10247
10248         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10249                 freq = MHZ_TO_KHZ(nla_get_u32(
10250                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10251         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10252                 freq +=
10253                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10254
10255         if (freq) {
10256                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10257                 if (!connect.channel)
10258                         return -EINVAL;
10259         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10260                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10261                 freq = MHZ_TO_KHZ(freq);
10262                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10263                 if (!connect.channel_hint)
10264                         return -EINVAL;
10265         }
10266
10267         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10268                 connect.edmg.channels =
10269                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10270
10271                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10272                         connect.edmg.bw_config =
10273                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10274         }
10275
10276         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10277                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10278                 if (IS_ERR(connkeys))
10279                         return PTR_ERR(connkeys);
10280         }
10281
10282         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10283                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10284
10285         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10286                 memcpy(&connect.ht_capa_mask,
10287                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10288                        sizeof(connect.ht_capa_mask));
10289
10290         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10291                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10292                         kfree_sensitive(connkeys);
10293                         return -EINVAL;
10294                 }
10295                 memcpy(&connect.ht_capa,
10296                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10297                        sizeof(connect.ht_capa));
10298         }
10299
10300         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10301                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10302
10303         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10304                 memcpy(&connect.vht_capa_mask,
10305                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10306                        sizeof(connect.vht_capa_mask));
10307
10308         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10309                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10310                         kfree_sensitive(connkeys);
10311                         return -EINVAL;
10312                 }
10313                 memcpy(&connect.vht_capa,
10314                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10315                        sizeof(connect.vht_capa));
10316         }
10317
10318         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10319                 if (!((rdev->wiphy.features &
10320                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10321                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10322                     !wiphy_ext_feature_isset(&rdev->wiphy,
10323                                              NL80211_EXT_FEATURE_RRM)) {
10324                         kfree_sensitive(connkeys);
10325                         return -EINVAL;
10326                 }
10327                 connect.flags |= ASSOC_REQ_USE_RRM;
10328         }
10329
10330         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10331         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10332                 kfree_sensitive(connkeys);
10333                 return -EOPNOTSUPP;
10334         }
10335
10336         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10337                 /* bss selection makes no sense if bssid is set */
10338                 if (connect.bssid) {
10339                         kfree_sensitive(connkeys);
10340                         return -EINVAL;
10341                 }
10342
10343                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10344                                        wiphy, &connect.bss_select);
10345                 if (err) {
10346                         kfree_sensitive(connkeys);
10347                         return err;
10348                 }
10349         }
10350
10351         if (wiphy_ext_feature_isset(&rdev->wiphy,
10352                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10353             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10354             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10355             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10356             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10357                 connect.fils_erp_username =
10358                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10359                 connect.fils_erp_username_len =
10360                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10361                 connect.fils_erp_realm =
10362                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10363                 connect.fils_erp_realm_len =
10364                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10365                 connect.fils_erp_next_seq_num =
10366                         nla_get_u16(
10367                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10368                 connect.fils_erp_rrk =
10369                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10370                 connect.fils_erp_rrk_len =
10371                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10372         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10373                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10374                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10375                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10376                 kfree_sensitive(connkeys);
10377                 return -EINVAL;
10378         }
10379
10380         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10381                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10382                         kfree_sensitive(connkeys);
10383                         GENL_SET_ERR_MSG(info,
10384                                          "external auth requires connection ownership");
10385                         return -EINVAL;
10386                 }
10387                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10388         }
10389
10390         wdev_lock(dev->ieee80211_ptr);
10391
10392         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10393                                connect.prev_bssid);
10394         if (err)
10395                 kfree_sensitive(connkeys);
10396
10397         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10398                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10399                 if (connect.bssid)
10400                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10401                                connect.bssid, ETH_ALEN);
10402                 else
10403                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10404         }
10405
10406         wdev_unlock(dev->ieee80211_ptr);
10407
10408         return err;
10409 }
10410
10411 static int nl80211_update_connect_params(struct sk_buff *skb,
10412                                          struct genl_info *info)
10413 {
10414         struct cfg80211_connect_params connect = {};
10415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10416         struct net_device *dev = info->user_ptr[1];
10417         struct wireless_dev *wdev = dev->ieee80211_ptr;
10418         bool fils_sk_offload;
10419         u32 auth_type;
10420         u32 changed = 0;
10421         int ret;
10422
10423         if (!rdev->ops->update_connect_params)
10424                 return -EOPNOTSUPP;
10425
10426         if (info->attrs[NL80211_ATTR_IE]) {
10427                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10428                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10429                 changed |= UPDATE_ASSOC_IES;
10430         }
10431
10432         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10433                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10434
10435         /*
10436          * when driver supports fils-sk offload all attributes must be
10437          * provided. So the else covers "fils-sk-not-all" and
10438          * "no-fils-sk-any".
10439          */
10440         if (fils_sk_offload &&
10441             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10442             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10443             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10444             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10445                 connect.fils_erp_username =
10446                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10447                 connect.fils_erp_username_len =
10448                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10449                 connect.fils_erp_realm =
10450                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10451                 connect.fils_erp_realm_len =
10452                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10453                 connect.fils_erp_next_seq_num =
10454                         nla_get_u16(
10455                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10456                 connect.fils_erp_rrk =
10457                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10458                 connect.fils_erp_rrk_len =
10459                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10460                 changed |= UPDATE_FILS_ERP_INFO;
10461         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10462                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10463                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10464                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10465                 return -EINVAL;
10466         }
10467
10468         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10469                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10470                 if (!nl80211_valid_auth_type(rdev, auth_type,
10471                                              NL80211_CMD_CONNECT))
10472                         return -EINVAL;
10473
10474                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10475                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10476                         return -EINVAL;
10477
10478                 connect.auth_type = auth_type;
10479                 changed |= UPDATE_AUTH_TYPE;
10480         }
10481
10482         wdev_lock(dev->ieee80211_ptr);
10483         if (!wdev->current_bss)
10484                 ret = -ENOLINK;
10485         else
10486                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10487         wdev_unlock(dev->ieee80211_ptr);
10488
10489         return ret;
10490 }
10491
10492 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10493 {
10494         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10495         struct net_device *dev = info->user_ptr[1];
10496         u16 reason;
10497         int ret;
10498
10499         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10500             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10501                 return -EPERM;
10502
10503         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10504                 reason = WLAN_REASON_DEAUTH_LEAVING;
10505         else
10506                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10507
10508         if (reason == 0)
10509                 return -EINVAL;
10510
10511         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10512             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10513                 return -EOPNOTSUPP;
10514
10515         wdev_lock(dev->ieee80211_ptr);
10516         ret = cfg80211_disconnect(rdev, dev, reason, true);
10517         wdev_unlock(dev->ieee80211_ptr);
10518         return ret;
10519 }
10520
10521 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10522 {
10523         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10524         struct net *net;
10525         int err;
10526
10527         if (info->attrs[NL80211_ATTR_PID]) {
10528                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10529
10530                 net = get_net_ns_by_pid(pid);
10531         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10532                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10533
10534                 net = get_net_ns_by_fd(fd);
10535         } else {
10536                 return -EINVAL;
10537         }
10538
10539         if (IS_ERR(net))
10540                 return PTR_ERR(net);
10541
10542         err = 0;
10543
10544         /* check if anything to do */
10545         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10546                 err = cfg80211_switch_netns(rdev, net);
10547
10548         put_net(net);
10549         return err;
10550 }
10551
10552 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10553 {
10554         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10555         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10556                         struct cfg80211_pmksa *pmksa) = NULL;
10557         struct net_device *dev = info->user_ptr[1];
10558         struct cfg80211_pmksa pmksa;
10559
10560         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10561
10562         if (!info->attrs[NL80211_ATTR_PMKID])
10563                 return -EINVAL;
10564
10565         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10566
10567         if (info->attrs[NL80211_ATTR_MAC]) {
10568                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10569         } else if (info->attrs[NL80211_ATTR_SSID] &&
10570                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10571                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10572                     info->attrs[NL80211_ATTR_PMK])) {
10573                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10574                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10575                 pmksa.cache_id =
10576                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10577         } else {
10578                 return -EINVAL;
10579         }
10580         if (info->attrs[NL80211_ATTR_PMK]) {
10581                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10582                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10583         }
10584
10585         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10586                 pmksa.pmk_lifetime =
10587                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10588
10589         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10590                 pmksa.pmk_reauth_threshold =
10591                         nla_get_u8(
10592                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10593
10594         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10595             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10596             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10597               wiphy_ext_feature_isset(&rdev->wiphy,
10598                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10599                 return -EOPNOTSUPP;
10600
10601         switch (info->genlhdr->cmd) {
10602         case NL80211_CMD_SET_PMKSA:
10603                 rdev_ops = rdev->ops->set_pmksa;
10604                 break;
10605         case NL80211_CMD_DEL_PMKSA:
10606                 rdev_ops = rdev->ops->del_pmksa;
10607                 break;
10608         default:
10609                 WARN_ON(1);
10610                 break;
10611         }
10612
10613         if (!rdev_ops)
10614                 return -EOPNOTSUPP;
10615
10616         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10617 }
10618
10619 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10620 {
10621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10622         struct net_device *dev = info->user_ptr[1];
10623
10624         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10625             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10626                 return -EOPNOTSUPP;
10627
10628         if (!rdev->ops->flush_pmksa)
10629                 return -EOPNOTSUPP;
10630
10631         return rdev_flush_pmksa(rdev, dev);
10632 }
10633
10634 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10635 {
10636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10637         struct net_device *dev = info->user_ptr[1];
10638         u8 action_code, dialog_token;
10639         u32 peer_capability = 0;
10640         u16 status_code;
10641         u8 *peer;
10642         bool initiator;
10643
10644         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10645             !rdev->ops->tdls_mgmt)
10646                 return -EOPNOTSUPP;
10647
10648         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10649             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10650             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10651             !info->attrs[NL80211_ATTR_IE] ||
10652             !info->attrs[NL80211_ATTR_MAC])
10653                 return -EINVAL;
10654
10655         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10656         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10657         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10658         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10659         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10660         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10661                 peer_capability =
10662                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10663
10664         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10665                               dialog_token, status_code, peer_capability,
10666                               initiator,
10667                               nla_data(info->attrs[NL80211_ATTR_IE]),
10668                               nla_len(info->attrs[NL80211_ATTR_IE]));
10669 }
10670
10671 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10672 {
10673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10674         struct net_device *dev = info->user_ptr[1];
10675         enum nl80211_tdls_operation operation;
10676         u8 *peer;
10677
10678         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10679             !rdev->ops->tdls_oper)
10680                 return -EOPNOTSUPP;
10681
10682         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10683             !info->attrs[NL80211_ATTR_MAC])
10684                 return -EINVAL;
10685
10686         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10687         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10688
10689         return rdev_tdls_oper(rdev, dev, peer, operation);
10690 }
10691
10692 static int nl80211_remain_on_channel(struct sk_buff *skb,
10693                                      struct genl_info *info)
10694 {
10695         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10696         struct wireless_dev *wdev = info->user_ptr[1];
10697         struct cfg80211_chan_def chandef;
10698         const struct cfg80211_chan_def *compat_chandef;
10699         struct sk_buff *msg;
10700         void *hdr;
10701         u64 cookie;
10702         u32 duration;
10703         int err;
10704
10705         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10706             !info->attrs[NL80211_ATTR_DURATION])
10707                 return -EINVAL;
10708
10709         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10710
10711         if (!rdev->ops->remain_on_channel ||
10712             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10713                 return -EOPNOTSUPP;
10714
10715         /*
10716          * We should be on that channel for at least a minimum amount of
10717          * time (10ms) but no longer than the driver supports.
10718          */
10719         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10720             duration > rdev->wiphy.max_remain_on_channel_duration)
10721                 return -EINVAL;
10722
10723         err = nl80211_parse_chandef(rdev, info, &chandef);
10724         if (err)
10725                 return err;
10726
10727         wdev_lock(wdev);
10728         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10729             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10730                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10731                                                              &chandef);
10732                 if (compat_chandef != &chandef) {
10733                         wdev_unlock(wdev);
10734                         return -EBUSY;
10735                 }
10736         }
10737         wdev_unlock(wdev);
10738
10739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10740         if (!msg)
10741                 return -ENOMEM;
10742
10743         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10744                              NL80211_CMD_REMAIN_ON_CHANNEL);
10745         if (!hdr) {
10746                 err = -ENOBUFS;
10747                 goto free_msg;
10748         }
10749
10750         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10751                                      duration, &cookie);
10752
10753         if (err)
10754                 goto free_msg;
10755
10756         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10757                               NL80211_ATTR_PAD))
10758                 goto nla_put_failure;
10759
10760         genlmsg_end(msg, hdr);
10761
10762         return genlmsg_reply(msg, info);
10763
10764  nla_put_failure:
10765         err = -ENOBUFS;
10766  free_msg:
10767         nlmsg_free(msg);
10768         return err;
10769 }
10770
10771 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10772                                             struct genl_info *info)
10773 {
10774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10775         struct wireless_dev *wdev = info->user_ptr[1];
10776         u64 cookie;
10777
10778         if (!info->attrs[NL80211_ATTR_COOKIE])
10779                 return -EINVAL;
10780
10781         if (!rdev->ops->cancel_remain_on_channel)
10782                 return -EOPNOTSUPP;
10783
10784         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10785
10786         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10787 }
10788
10789 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10790                                        struct genl_info *info)
10791 {
10792         struct cfg80211_bitrate_mask mask;
10793         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10794         struct net_device *dev = info->user_ptr[1];
10795         int err;
10796
10797         if (!rdev->ops->set_bitrate_mask)
10798                 return -EOPNOTSUPP;
10799
10800         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
10801                                             NL80211_ATTR_TX_RATES, &mask);
10802         if (err)
10803                 return err;
10804
10805         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10806 }
10807
10808 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10809 {
10810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10811         struct wireless_dev *wdev = info->user_ptr[1];
10812         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10813
10814         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10815                 return -EINVAL;
10816
10817         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10818                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10819
10820         switch (wdev->iftype) {
10821         case NL80211_IFTYPE_STATION:
10822         case NL80211_IFTYPE_ADHOC:
10823         case NL80211_IFTYPE_P2P_CLIENT:
10824         case NL80211_IFTYPE_AP:
10825         case NL80211_IFTYPE_AP_VLAN:
10826         case NL80211_IFTYPE_MESH_POINT:
10827         case NL80211_IFTYPE_P2P_GO:
10828         case NL80211_IFTYPE_P2P_DEVICE:
10829                 break;
10830         case NL80211_IFTYPE_NAN:
10831         default:
10832                 return -EOPNOTSUPP;
10833         }
10834
10835         /* not much point in registering if we can't reply */
10836         if (!rdev->ops->mgmt_tx)
10837                 return -EOPNOTSUPP;
10838
10839         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
10840             !wiphy_ext_feature_isset(&rdev->wiphy,
10841                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
10842                 GENL_SET_ERR_MSG(info,
10843                                  "multicast RX registrations are not supported");
10844                 return -EOPNOTSUPP;
10845         }
10846
10847         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10848                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10849                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10850                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
10851                                            info->extack);
10852 }
10853
10854 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10855 {
10856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10857         struct wireless_dev *wdev = info->user_ptr[1];
10858         struct cfg80211_chan_def chandef;
10859         int err;
10860         void *hdr = NULL;
10861         u64 cookie;
10862         struct sk_buff *msg = NULL;
10863         struct cfg80211_mgmt_tx_params params = {
10864                 .dont_wait_for_ack =
10865                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10866         };
10867
10868         if (!info->attrs[NL80211_ATTR_FRAME])
10869                 return -EINVAL;
10870
10871         if (!rdev->ops->mgmt_tx)
10872                 return -EOPNOTSUPP;
10873
10874         switch (wdev->iftype) {
10875         case NL80211_IFTYPE_P2P_DEVICE:
10876                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10877                         return -EINVAL;
10878         case NL80211_IFTYPE_STATION:
10879         case NL80211_IFTYPE_ADHOC:
10880         case NL80211_IFTYPE_P2P_CLIENT:
10881         case NL80211_IFTYPE_AP:
10882         case NL80211_IFTYPE_AP_VLAN:
10883         case NL80211_IFTYPE_MESH_POINT:
10884         case NL80211_IFTYPE_P2P_GO:
10885                 break;
10886         case NL80211_IFTYPE_NAN:
10887         default:
10888                 return -EOPNOTSUPP;
10889         }
10890
10891         if (info->attrs[NL80211_ATTR_DURATION]) {
10892                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10893                         return -EINVAL;
10894                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10895
10896                 /*
10897                  * We should wait on the channel for at least a minimum amount
10898                  * of time (10ms) but no longer than the driver supports.
10899                  */
10900                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10901                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10902                         return -EINVAL;
10903         }
10904
10905         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10906
10907         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10908                 return -EINVAL;
10909
10910         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10911
10912         /* get the channel if any has been specified, otherwise pass NULL to
10913          * the driver. The latter will use the current one
10914          */
10915         chandef.chan = NULL;
10916         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10917                 err = nl80211_parse_chandef(rdev, info, &chandef);
10918                 if (err)
10919                         return err;
10920         }
10921
10922         if (!chandef.chan && params.offchan)
10923                 return -EINVAL;
10924
10925         wdev_lock(wdev);
10926         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10927                 wdev_unlock(wdev);
10928                 return -EBUSY;
10929         }
10930         wdev_unlock(wdev);
10931
10932         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10933         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10934
10935         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10936                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10937                 int i;
10938
10939                 if (len % sizeof(u16))
10940                         return -EINVAL;
10941
10942                 params.n_csa_offsets = len / sizeof(u16);
10943                 params.csa_offsets =
10944                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10945
10946                 /* check that all the offsets fit the frame */
10947                 for (i = 0; i < params.n_csa_offsets; i++) {
10948                         if (params.csa_offsets[i] >= params.len)
10949                                 return -EINVAL;
10950                 }
10951         }
10952
10953         if (!params.dont_wait_for_ack) {
10954                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10955                 if (!msg)
10956                         return -ENOMEM;
10957
10958                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10959                                      NL80211_CMD_FRAME);
10960                 if (!hdr) {
10961                         err = -ENOBUFS;
10962                         goto free_msg;
10963                 }
10964         }
10965
10966         params.chan = chandef.chan;
10967         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10968         if (err)
10969                 goto free_msg;
10970
10971         if (msg) {
10972                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10973                                       NL80211_ATTR_PAD))
10974                         goto nla_put_failure;
10975
10976                 genlmsg_end(msg, hdr);
10977                 return genlmsg_reply(msg, info);
10978         }
10979
10980         return 0;
10981
10982  nla_put_failure:
10983         err = -ENOBUFS;
10984  free_msg:
10985         nlmsg_free(msg);
10986         return err;
10987 }
10988
10989 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10990 {
10991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10992         struct wireless_dev *wdev = info->user_ptr[1];
10993         u64 cookie;
10994
10995         if (!info->attrs[NL80211_ATTR_COOKIE])
10996                 return -EINVAL;
10997
10998         if (!rdev->ops->mgmt_tx_cancel_wait)
10999                 return -EOPNOTSUPP;
11000
11001         switch (wdev->iftype) {
11002         case NL80211_IFTYPE_STATION:
11003         case NL80211_IFTYPE_ADHOC:
11004         case NL80211_IFTYPE_P2P_CLIENT:
11005         case NL80211_IFTYPE_AP:
11006         case NL80211_IFTYPE_AP_VLAN:
11007         case NL80211_IFTYPE_P2P_GO:
11008         case NL80211_IFTYPE_P2P_DEVICE:
11009                 break;
11010         case NL80211_IFTYPE_NAN:
11011         default:
11012                 return -EOPNOTSUPP;
11013         }
11014
11015         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11016
11017         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11018 }
11019
11020 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11021 {
11022         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11023         struct wireless_dev *wdev;
11024         struct net_device *dev = info->user_ptr[1];
11025         u8 ps_state;
11026         bool state;
11027         int err;
11028
11029         if (!info->attrs[NL80211_ATTR_PS_STATE])
11030                 return -EINVAL;
11031
11032         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11033
11034         wdev = dev->ieee80211_ptr;
11035
11036         if (!rdev->ops->set_power_mgmt)
11037                 return -EOPNOTSUPP;
11038
11039         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11040
11041         if (state == wdev->ps)
11042                 return 0;
11043
11044         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11045         if (!err)
11046                 wdev->ps = state;
11047         return err;
11048 }
11049
11050 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11051 {
11052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11053         enum nl80211_ps_state ps_state;
11054         struct wireless_dev *wdev;
11055         struct net_device *dev = info->user_ptr[1];
11056         struct sk_buff *msg;
11057         void *hdr;
11058         int err;
11059
11060         wdev = dev->ieee80211_ptr;
11061
11062         if (!rdev->ops->set_power_mgmt)
11063                 return -EOPNOTSUPP;
11064
11065         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11066         if (!msg)
11067                 return -ENOMEM;
11068
11069         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11070                              NL80211_CMD_GET_POWER_SAVE);
11071         if (!hdr) {
11072                 err = -ENOBUFS;
11073                 goto free_msg;
11074         }
11075
11076         if (wdev->ps)
11077                 ps_state = NL80211_PS_ENABLED;
11078         else
11079                 ps_state = NL80211_PS_DISABLED;
11080
11081         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11082                 goto nla_put_failure;
11083
11084         genlmsg_end(msg, hdr);
11085         return genlmsg_reply(msg, info);
11086
11087  nla_put_failure:
11088         err = -ENOBUFS;
11089  free_msg:
11090         nlmsg_free(msg);
11091         return err;
11092 }
11093
11094 static const struct nla_policy
11095 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11096         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11097         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11098         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11099         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11100         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11101         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11102         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11103 };
11104
11105 static int nl80211_set_cqm_txe(struct genl_info *info,
11106                                u32 rate, u32 pkts, u32 intvl)
11107 {
11108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11109         struct net_device *dev = info->user_ptr[1];
11110         struct wireless_dev *wdev = dev->ieee80211_ptr;
11111
11112         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11113                 return -EINVAL;
11114
11115         if (!rdev->ops->set_cqm_txe_config)
11116                 return -EOPNOTSUPP;
11117
11118         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11119             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11120                 return -EOPNOTSUPP;
11121
11122         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11123 }
11124
11125 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11126                                     struct net_device *dev)
11127 {
11128         struct wireless_dev *wdev = dev->ieee80211_ptr;
11129         s32 last, low, high;
11130         u32 hyst;
11131         int i, n, low_index;
11132         int err;
11133
11134         /* RSSI reporting disabled? */
11135         if (!wdev->cqm_config)
11136                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11137
11138         /*
11139          * Obtain current RSSI value if possible, if not and no RSSI threshold
11140          * event has been received yet, we should receive an event after a
11141          * connection is established and enough beacons received to calculate
11142          * the average.
11143          */
11144         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11145             rdev->ops->get_station) {
11146                 struct station_info sinfo = {};
11147                 u8 *mac_addr;
11148
11149                 mac_addr = wdev->current_bss->pub.bssid;
11150
11151                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11152                 if (err)
11153                         return err;
11154
11155                 cfg80211_sinfo_release_content(&sinfo);
11156                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11157                         wdev->cqm_config->last_rssi_event_value =
11158                                 (s8) sinfo.rx_beacon_signal_avg;
11159         }
11160
11161         last = wdev->cqm_config->last_rssi_event_value;
11162         hyst = wdev->cqm_config->rssi_hyst;
11163         n = wdev->cqm_config->n_rssi_thresholds;
11164
11165         for (i = 0; i < n; i++) {
11166                 i = array_index_nospec(i, n);
11167                 if (last < wdev->cqm_config->rssi_thresholds[i])
11168                         break;
11169         }
11170
11171         low_index = i - 1;
11172         if (low_index >= 0) {
11173                 low_index = array_index_nospec(low_index, n);
11174                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11175         } else {
11176                 low = S32_MIN;
11177         }
11178         if (i < n) {
11179                 i = array_index_nospec(i, n);
11180                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11181         } else {
11182                 high = S32_MAX;
11183         }
11184
11185         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11186 }
11187
11188 static int nl80211_set_cqm_rssi(struct genl_info *info,
11189                                 const s32 *thresholds, int n_thresholds,
11190                                 u32 hysteresis)
11191 {
11192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11193         struct net_device *dev = info->user_ptr[1];
11194         struct wireless_dev *wdev = dev->ieee80211_ptr;
11195         int i, err;
11196         s32 prev = S32_MIN;
11197
11198         /* Check all values negative and sorted */
11199         for (i = 0; i < n_thresholds; i++) {
11200                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11201                         return -EINVAL;
11202
11203                 prev = thresholds[i];
11204         }
11205
11206         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11207             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11208                 return -EOPNOTSUPP;
11209
11210         wdev_lock(wdev);
11211         cfg80211_cqm_config_free(wdev);
11212         wdev_unlock(wdev);
11213
11214         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11215                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11216                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11217
11218                 return rdev_set_cqm_rssi_config(rdev, dev,
11219                                                 thresholds[0], hysteresis);
11220         }
11221
11222         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11223                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11224                 return -EOPNOTSUPP;
11225
11226         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11227                 n_thresholds = 0;
11228
11229         wdev_lock(wdev);
11230         if (n_thresholds) {
11231                 struct cfg80211_cqm_config *cqm_config;
11232
11233                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11234                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11235                 if (!cqm_config) {
11236                         err = -ENOMEM;
11237                         goto unlock;
11238                 }
11239
11240                 cqm_config->rssi_hyst = hysteresis;
11241                 cqm_config->n_rssi_thresholds = n_thresholds;
11242                 memcpy(cqm_config->rssi_thresholds, thresholds,
11243                        n_thresholds * sizeof(s32));
11244
11245                 wdev->cqm_config = cqm_config;
11246         }
11247
11248         err = cfg80211_cqm_rssi_update(rdev, dev);
11249
11250 unlock:
11251         wdev_unlock(wdev);
11252
11253         return err;
11254 }
11255
11256 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11257 {
11258         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11259         struct nlattr *cqm;
11260         int err;
11261
11262         cqm = info->attrs[NL80211_ATTR_CQM];
11263         if (!cqm)
11264                 return -EINVAL;
11265
11266         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11267                                           nl80211_attr_cqm_policy,
11268                                           info->extack);
11269         if (err)
11270                 return err;
11271
11272         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11273             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11274                 const s32 *thresholds =
11275                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11276                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11277                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11278
11279                 if (len % 4)
11280                         return -EINVAL;
11281
11282                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11283                                             hysteresis);
11284         }
11285
11286         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11287             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11288             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11289                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11290                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11291                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11292
11293                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11294         }
11295
11296         return -EINVAL;
11297 }
11298
11299 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11300 {
11301         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11302         struct net_device *dev = info->user_ptr[1];
11303         struct ocb_setup setup = {};
11304         int err;
11305
11306         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11307         if (err)
11308                 return err;
11309
11310         return cfg80211_join_ocb(rdev, dev, &setup);
11311 }
11312
11313 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11314 {
11315         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11316         struct net_device *dev = info->user_ptr[1];
11317
11318         return cfg80211_leave_ocb(rdev, dev);
11319 }
11320
11321 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11322 {
11323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11324         struct net_device *dev = info->user_ptr[1];
11325         struct mesh_config cfg;
11326         struct mesh_setup setup;
11327         int err;
11328
11329         /* start with default */
11330         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11331         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11332
11333         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11334                 /* and parse parameters if given */
11335                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11336                 if (err)
11337                         return err;
11338         }
11339
11340         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11341             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11342                 return -EINVAL;
11343
11344         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11345         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11346
11347         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11348             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11349                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11350                         return -EINVAL;
11351
11352         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11353                 setup.beacon_interval =
11354                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11355
11356                 err = cfg80211_validate_beacon_int(rdev,
11357                                                    NL80211_IFTYPE_MESH_POINT,
11358                                                    setup.beacon_interval);
11359                 if (err)
11360                         return err;
11361         }
11362
11363         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11364                 setup.dtim_period =
11365                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11366                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11367                         return -EINVAL;
11368         }
11369
11370         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11371                 /* parse additional setup parameters if given */
11372                 err = nl80211_parse_mesh_setup(info, &setup);
11373                 if (err)
11374                         return err;
11375         }
11376
11377         if (setup.user_mpm)
11378                 cfg.auto_open_plinks = false;
11379
11380         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11381                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11382                 if (err)
11383                         return err;
11384         } else {
11385                 /* __cfg80211_join_mesh() will sort it out */
11386                 setup.chandef.chan = NULL;
11387         }
11388
11389         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11390                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11391                 int n_rates =
11392                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11393                 struct ieee80211_supported_band *sband;
11394
11395                 if (!setup.chandef.chan)
11396                         return -EINVAL;
11397
11398                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11399
11400                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11401                                              &setup.basic_rates);
11402                 if (err)
11403                         return err;
11404         }
11405
11406         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11407                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11408                                                     NL80211_ATTR_TX_RATES,
11409                                                     &setup.beacon_rate);
11410                 if (err)
11411                         return err;
11412
11413                 if (!setup.chandef.chan)
11414                         return -EINVAL;
11415
11416                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11417                                               &setup.beacon_rate);
11418                 if (err)
11419                         return err;
11420         }
11421
11422         setup.userspace_handles_dfs =
11423                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11424
11425         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11426                 int r = validate_pae_over_nl80211(rdev, info);
11427
11428                 if (r < 0)
11429                         return r;
11430
11431                 setup.control_port_over_nl80211 = true;
11432         }
11433
11434         wdev_lock(dev->ieee80211_ptr);
11435         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11436         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11437                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11438         wdev_unlock(dev->ieee80211_ptr);
11439
11440         return err;
11441 }
11442
11443 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11444 {
11445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11446         struct net_device *dev = info->user_ptr[1];
11447
11448         return cfg80211_leave_mesh(rdev, dev);
11449 }
11450
11451 #ifdef CONFIG_PM
11452 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11453                                         struct cfg80211_registered_device *rdev)
11454 {
11455         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11456         struct nlattr *nl_pats, *nl_pat;
11457         int i, pat_len;
11458
11459         if (!wowlan->n_patterns)
11460                 return 0;
11461
11462         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11463         if (!nl_pats)
11464                 return -ENOBUFS;
11465
11466         for (i = 0; i < wowlan->n_patterns; i++) {
11467                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11468                 if (!nl_pat)
11469                         return -ENOBUFS;
11470                 pat_len = wowlan->patterns[i].pattern_len;
11471                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11472                             wowlan->patterns[i].mask) ||
11473                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11474                             wowlan->patterns[i].pattern) ||
11475                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11476                                 wowlan->patterns[i].pkt_offset))
11477                         return -ENOBUFS;
11478                 nla_nest_end(msg, nl_pat);
11479         }
11480         nla_nest_end(msg, nl_pats);
11481
11482         return 0;
11483 }
11484
11485 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11486                                    struct cfg80211_wowlan_tcp *tcp)
11487 {
11488         struct nlattr *nl_tcp;
11489
11490         if (!tcp)
11491                 return 0;
11492
11493         nl_tcp = nla_nest_start_noflag(msg,
11494                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11495         if (!nl_tcp)
11496                 return -ENOBUFS;
11497
11498         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11499             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11500             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11501             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11502             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11503             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11504                     tcp->payload_len, tcp->payload) ||
11505             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11506                         tcp->data_interval) ||
11507             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11508                     tcp->wake_len, tcp->wake_data) ||
11509             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11510                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11511                 return -ENOBUFS;
11512
11513         if (tcp->payload_seq.len &&
11514             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11515                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11516                 return -ENOBUFS;
11517
11518         if (tcp->payload_tok.len &&
11519             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11520                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11521                     &tcp->payload_tok))
11522                 return -ENOBUFS;
11523
11524         nla_nest_end(msg, nl_tcp);
11525
11526         return 0;
11527 }
11528
11529 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11530                                   struct cfg80211_sched_scan_request *req)
11531 {
11532         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11533         int i;
11534
11535         if (!req)
11536                 return 0;
11537
11538         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11539         if (!nd)
11540                 return -ENOBUFS;
11541
11542         if (req->n_scan_plans == 1 &&
11543             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11544                         req->scan_plans[0].interval * 1000))
11545                 return -ENOBUFS;
11546
11547         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11548                 return -ENOBUFS;
11549
11550         if (req->relative_rssi_set) {
11551                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11552
11553                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11554                                req->relative_rssi))
11555                         return -ENOBUFS;
11556
11557                 rssi_adjust.band = req->rssi_adjust.band;
11558                 rssi_adjust.delta = req->rssi_adjust.delta;
11559                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11560                             sizeof(rssi_adjust), &rssi_adjust))
11561                         return -ENOBUFS;
11562         }
11563
11564         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11565         if (!freqs)
11566                 return -ENOBUFS;
11567
11568         for (i = 0; i < req->n_channels; i++) {
11569                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11570                         return -ENOBUFS;
11571         }
11572
11573         nla_nest_end(msg, freqs);
11574
11575         if (req->n_match_sets) {
11576                 matches = nla_nest_start_noflag(msg,
11577                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11578                 if (!matches)
11579                         return -ENOBUFS;
11580
11581                 for (i = 0; i < req->n_match_sets; i++) {
11582                         match = nla_nest_start_noflag(msg, i);
11583                         if (!match)
11584                                 return -ENOBUFS;
11585
11586                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11587                                     req->match_sets[i].ssid.ssid_len,
11588                                     req->match_sets[i].ssid.ssid))
11589                                 return -ENOBUFS;
11590                         nla_nest_end(msg, match);
11591                 }
11592                 nla_nest_end(msg, matches);
11593         }
11594
11595         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11596         if (!scan_plans)
11597                 return -ENOBUFS;
11598
11599         for (i = 0; i < req->n_scan_plans; i++) {
11600                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11601                 if (!scan_plan)
11602                         return -ENOBUFS;
11603
11604                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11605                                 req->scan_plans[i].interval) ||
11606                     (req->scan_plans[i].iterations &&
11607                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11608                                  req->scan_plans[i].iterations)))
11609                         return -ENOBUFS;
11610                 nla_nest_end(msg, scan_plan);
11611         }
11612         nla_nest_end(msg, scan_plans);
11613
11614         nla_nest_end(msg, nd);
11615
11616         return 0;
11617 }
11618
11619 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11620 {
11621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11622         struct sk_buff *msg;
11623         void *hdr;
11624         u32 size = NLMSG_DEFAULT_SIZE;
11625
11626         if (!rdev->wiphy.wowlan)
11627                 return -EOPNOTSUPP;
11628
11629         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11630                 /* adjust size to have room for all the data */
11631                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11632                         rdev->wiphy.wowlan_config->tcp->payload_len +
11633                         rdev->wiphy.wowlan_config->tcp->wake_len +
11634                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11635         }
11636
11637         msg = nlmsg_new(size, GFP_KERNEL);
11638         if (!msg)
11639                 return -ENOMEM;
11640
11641         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11642                              NL80211_CMD_GET_WOWLAN);
11643         if (!hdr)
11644                 goto nla_put_failure;
11645
11646         if (rdev->wiphy.wowlan_config) {
11647                 struct nlattr *nl_wowlan;
11648
11649                 nl_wowlan = nla_nest_start_noflag(msg,
11650                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11651                 if (!nl_wowlan)
11652                         goto nla_put_failure;
11653
11654                 if ((rdev->wiphy.wowlan_config->any &&
11655                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11656                     (rdev->wiphy.wowlan_config->disconnect &&
11657                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11658                     (rdev->wiphy.wowlan_config->magic_pkt &&
11659                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11660                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11661                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11662                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11663                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11664                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11665                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11666                     (rdev->wiphy.wowlan_config->rfkill_release &&
11667                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11668                         goto nla_put_failure;
11669
11670                 if (nl80211_send_wowlan_patterns(msg, rdev))
11671                         goto nla_put_failure;
11672
11673                 if (nl80211_send_wowlan_tcp(msg,
11674                                             rdev->wiphy.wowlan_config->tcp))
11675                         goto nla_put_failure;
11676
11677                 if (nl80211_send_wowlan_nd(
11678                             msg,
11679                             rdev->wiphy.wowlan_config->nd_config))
11680                         goto nla_put_failure;
11681
11682                 nla_nest_end(msg, nl_wowlan);
11683         }
11684
11685         genlmsg_end(msg, hdr);
11686         return genlmsg_reply(msg, info);
11687
11688 nla_put_failure:
11689         nlmsg_free(msg);
11690         return -ENOBUFS;
11691 }
11692
11693 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11694                                     struct nlattr *attr,
11695                                     struct cfg80211_wowlan *trig)
11696 {
11697         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11698         struct cfg80211_wowlan_tcp *cfg;
11699         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11700         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11701         u32 size;
11702         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11703         int err, port;
11704
11705         if (!rdev->wiphy.wowlan->tcp)
11706                 return -EINVAL;
11707
11708         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11709                                           nl80211_wowlan_tcp_policy, NULL);
11710         if (err)
11711                 return err;
11712
11713         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11714             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11715             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11716             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11717             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11718             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11719             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11720             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11721                 return -EINVAL;
11722
11723         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11724         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11725                 return -EINVAL;
11726
11727         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11728                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11729             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11730                 return -EINVAL;
11731
11732         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11733         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11734                 return -EINVAL;
11735
11736         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11737         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11738                 return -EINVAL;
11739
11740         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11741                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11742
11743                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11744                 tokens_size = tokln - sizeof(*tok);
11745
11746                 if (!tok->len || tokens_size % tok->len)
11747                         return -EINVAL;
11748                 if (!rdev->wiphy.wowlan->tcp->tok)
11749                         return -EINVAL;
11750                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11751                         return -EINVAL;
11752                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11753                         return -EINVAL;
11754                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11755                         return -EINVAL;
11756                 if (tok->offset + tok->len > data_size)
11757                         return -EINVAL;
11758         }
11759
11760         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11761                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11762                 if (!rdev->wiphy.wowlan->tcp->seq)
11763                         return -EINVAL;
11764                 if (seq->len == 0 || seq->len > 4)
11765                         return -EINVAL;
11766                 if (seq->len + seq->offset > data_size)
11767                         return -EINVAL;
11768         }
11769
11770         size = sizeof(*cfg);
11771         size += data_size;
11772         size += wake_size + wake_mask_size;
11773         size += tokens_size;
11774
11775         cfg = kzalloc(size, GFP_KERNEL);
11776         if (!cfg)
11777                 return -ENOMEM;
11778         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11779         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11780         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11781                ETH_ALEN);
11782         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11783                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11784         else
11785                 port = 0;
11786 #ifdef CONFIG_INET
11787         /* allocate a socket and port for it and use it */
11788         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11789                             IPPROTO_TCP, &cfg->sock, 1);
11790         if (err) {
11791                 kfree(cfg);
11792                 return err;
11793         }
11794         if (inet_csk_get_port(cfg->sock->sk, port)) {
11795                 sock_release(cfg->sock);
11796                 kfree(cfg);
11797                 return -EADDRINUSE;
11798         }
11799         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11800 #else
11801         if (!port) {
11802                 kfree(cfg);
11803                 return -EINVAL;
11804         }
11805         cfg->src_port = port;
11806 #endif
11807
11808         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11809         cfg->payload_len = data_size;
11810         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11811         memcpy((void *)cfg->payload,
11812                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11813                data_size);
11814         if (seq)
11815                 cfg->payload_seq = *seq;
11816         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11817         cfg->wake_len = wake_size;
11818         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11819         memcpy((void *)cfg->wake_data,
11820                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11821                wake_size);
11822         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11823                          data_size + wake_size;
11824         memcpy((void *)cfg->wake_mask,
11825                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11826                wake_mask_size);
11827         if (tok) {
11828                 cfg->tokens_size = tokens_size;
11829                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11830         }
11831
11832         trig->tcp = cfg;
11833
11834         return 0;
11835 }
11836
11837 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11838                                    const struct wiphy_wowlan_support *wowlan,
11839                                    struct nlattr *attr,
11840                                    struct cfg80211_wowlan *trig)
11841 {
11842         struct nlattr **tb;
11843         int err;
11844
11845         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11846         if (!tb)
11847                 return -ENOMEM;
11848
11849         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11850                 err = -EOPNOTSUPP;
11851                 goto out;
11852         }
11853
11854         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11855                                           nl80211_policy, NULL);
11856         if (err)
11857                 goto out;
11858
11859         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11860                                                    wowlan->max_nd_match_sets);
11861         err = PTR_ERR_OR_ZERO(trig->nd_config);
11862         if (err)
11863                 trig->nd_config = NULL;
11864
11865 out:
11866         kfree(tb);
11867         return err;
11868 }
11869
11870 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11871 {
11872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11873         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11874         struct cfg80211_wowlan new_triggers = {};
11875         struct cfg80211_wowlan *ntrig;
11876         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11877         int err, i;
11878         bool prev_enabled = rdev->wiphy.wowlan_config;
11879         bool regular = false;
11880
11881         if (!wowlan)
11882                 return -EOPNOTSUPP;
11883
11884         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11885                 cfg80211_rdev_free_wowlan(rdev);
11886                 rdev->wiphy.wowlan_config = NULL;
11887                 goto set_wakeup;
11888         }
11889
11890         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11891                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11892                                           nl80211_wowlan_policy, info->extack);
11893         if (err)
11894                 return err;
11895
11896         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11897                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11898                         return -EINVAL;
11899                 new_triggers.any = true;
11900         }
11901
11902         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11903                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11904                         return -EINVAL;
11905                 new_triggers.disconnect = true;
11906                 regular = true;
11907         }
11908
11909         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11910                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11911                         return -EINVAL;
11912                 new_triggers.magic_pkt = true;
11913                 regular = true;
11914         }
11915
11916         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11917                 return -EINVAL;
11918
11919         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11920                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11921                         return -EINVAL;
11922                 new_triggers.gtk_rekey_failure = true;
11923                 regular = true;
11924         }
11925
11926         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11927                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11928                         return -EINVAL;
11929                 new_triggers.eap_identity_req = true;
11930                 regular = true;
11931         }
11932
11933         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11934                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11935                         return -EINVAL;
11936                 new_triggers.four_way_handshake = true;
11937                 regular = true;
11938         }
11939
11940         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11941                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11942                         return -EINVAL;
11943                 new_triggers.rfkill_release = true;
11944                 regular = true;
11945         }
11946
11947         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11948                 struct nlattr *pat;
11949                 int n_patterns = 0;
11950                 int rem, pat_len, mask_len, pkt_offset;
11951                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11952
11953                 regular = true;
11954
11955                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11956                                     rem)
11957                         n_patterns++;
11958                 if (n_patterns > wowlan->n_patterns)
11959                         return -EINVAL;
11960
11961                 new_triggers.patterns = kcalloc(n_patterns,
11962                                                 sizeof(new_triggers.patterns[0]),
11963                                                 GFP_KERNEL);
11964                 if (!new_triggers.patterns)
11965                         return -ENOMEM;
11966
11967                 new_triggers.n_patterns = n_patterns;
11968                 i = 0;
11969
11970                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11971                                     rem) {
11972                         u8 *mask_pat;
11973
11974                         err = nla_parse_nested_deprecated(pat_tb,
11975                                                           MAX_NL80211_PKTPAT,
11976                                                           pat,
11977                                                           nl80211_packet_pattern_policy,
11978                                                           info->extack);
11979                         if (err)
11980                                 goto error;
11981
11982                         err = -EINVAL;
11983                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11984                             !pat_tb[NL80211_PKTPAT_PATTERN])
11985                                 goto error;
11986                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11987                         mask_len = DIV_ROUND_UP(pat_len, 8);
11988                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11989                                 goto error;
11990                         if (pat_len > wowlan->pattern_max_len ||
11991                             pat_len < wowlan->pattern_min_len)
11992                                 goto error;
11993
11994                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11995                                 pkt_offset = 0;
11996                         else
11997                                 pkt_offset = nla_get_u32(
11998                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11999                         if (pkt_offset > wowlan->max_pkt_offset)
12000                                 goto error;
12001                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12002
12003                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12004                         if (!mask_pat) {
12005                                 err = -ENOMEM;
12006                                 goto error;
12007                         }
12008                         new_triggers.patterns[i].mask = mask_pat;
12009                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12010                                mask_len);
12011                         mask_pat += mask_len;
12012                         new_triggers.patterns[i].pattern = mask_pat;
12013                         new_triggers.patterns[i].pattern_len = pat_len;
12014                         memcpy(mask_pat,
12015                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12016                                pat_len);
12017                         i++;
12018                 }
12019         }
12020
12021         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12022                 regular = true;
12023                 err = nl80211_parse_wowlan_tcp(
12024                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12025                         &new_triggers);
12026                 if (err)
12027                         goto error;
12028         }
12029
12030         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12031                 regular = true;
12032                 err = nl80211_parse_wowlan_nd(
12033                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12034                         &new_triggers);
12035                 if (err)
12036                         goto error;
12037         }
12038
12039         /* The 'any' trigger means the device continues operating more or less
12040          * as in its normal operation mode and wakes up the host on most of the
12041          * normal interrupts (like packet RX, ...)
12042          * It therefore makes little sense to combine with the more constrained
12043          * wakeup trigger modes.
12044          */
12045         if (new_triggers.any && regular) {
12046                 err = -EINVAL;
12047                 goto error;
12048         }
12049
12050         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12051         if (!ntrig) {
12052                 err = -ENOMEM;
12053                 goto error;
12054         }
12055         cfg80211_rdev_free_wowlan(rdev);
12056         rdev->wiphy.wowlan_config = ntrig;
12057
12058  set_wakeup:
12059         if (rdev->ops->set_wakeup &&
12060             prev_enabled != !!rdev->wiphy.wowlan_config)
12061                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12062
12063         return 0;
12064  error:
12065         for (i = 0; i < new_triggers.n_patterns; i++)
12066                 kfree(new_triggers.patterns[i].mask);
12067         kfree(new_triggers.patterns);
12068         if (new_triggers.tcp && new_triggers.tcp->sock)
12069                 sock_release(new_triggers.tcp->sock);
12070         kfree(new_triggers.tcp);
12071         kfree(new_triggers.nd_config);
12072         return err;
12073 }
12074 #endif
12075
12076 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12077                                        struct cfg80211_registered_device *rdev)
12078 {
12079         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12080         int i, j, pat_len;
12081         struct cfg80211_coalesce_rules *rule;
12082
12083         if (!rdev->coalesce->n_rules)
12084                 return 0;
12085
12086         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12087         if (!nl_rules)
12088                 return -ENOBUFS;
12089
12090         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12091                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12092                 if (!nl_rule)
12093                         return -ENOBUFS;
12094
12095                 rule = &rdev->coalesce->rules[i];
12096                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12097                                 rule->delay))
12098                         return -ENOBUFS;
12099
12100                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12101                                 rule->condition))
12102                         return -ENOBUFS;
12103
12104                 nl_pats = nla_nest_start_noflag(msg,
12105                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12106                 if (!nl_pats)
12107                         return -ENOBUFS;
12108
12109                 for (j = 0; j < rule->n_patterns; j++) {
12110                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12111                         if (!nl_pat)
12112                                 return -ENOBUFS;
12113                         pat_len = rule->patterns[j].pattern_len;
12114                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12115                                     DIV_ROUND_UP(pat_len, 8),
12116                                     rule->patterns[j].mask) ||
12117                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12118                                     rule->patterns[j].pattern) ||
12119                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12120                                         rule->patterns[j].pkt_offset))
12121                                 return -ENOBUFS;
12122                         nla_nest_end(msg, nl_pat);
12123                 }
12124                 nla_nest_end(msg, nl_pats);
12125                 nla_nest_end(msg, nl_rule);
12126         }
12127         nla_nest_end(msg, nl_rules);
12128
12129         return 0;
12130 }
12131
12132 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12133 {
12134         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12135         struct sk_buff *msg;
12136         void *hdr;
12137
12138         if (!rdev->wiphy.coalesce)
12139                 return -EOPNOTSUPP;
12140
12141         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12142         if (!msg)
12143                 return -ENOMEM;
12144
12145         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12146                              NL80211_CMD_GET_COALESCE);
12147         if (!hdr)
12148                 goto nla_put_failure;
12149
12150         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12151                 goto nla_put_failure;
12152
12153         genlmsg_end(msg, hdr);
12154         return genlmsg_reply(msg, info);
12155
12156 nla_put_failure:
12157         nlmsg_free(msg);
12158         return -ENOBUFS;
12159 }
12160
12161 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12162 {
12163         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12164         int i, j;
12165         struct cfg80211_coalesce_rules *rule;
12166
12167         if (!coalesce)
12168                 return;
12169
12170         for (i = 0; i < coalesce->n_rules; i++) {
12171                 rule = &coalesce->rules[i];
12172                 for (j = 0; j < rule->n_patterns; j++)
12173                         kfree(rule->patterns[j].mask);
12174                 kfree(rule->patterns);
12175         }
12176         kfree(coalesce->rules);
12177         kfree(coalesce);
12178         rdev->coalesce = NULL;
12179 }
12180
12181 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12182                                        struct nlattr *rule,
12183                                        struct cfg80211_coalesce_rules *new_rule)
12184 {
12185         int err, i;
12186         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12187         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12188         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12189         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12190
12191         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12192                                           rule, nl80211_coalesce_policy, NULL);
12193         if (err)
12194                 return err;
12195
12196         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12197                 new_rule->delay =
12198                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12199         if (new_rule->delay > coalesce->max_delay)
12200                 return -EINVAL;
12201
12202         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12203                 new_rule->condition =
12204                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12205
12206         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12207                 return -EINVAL;
12208
12209         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12210                             rem)
12211                 n_patterns++;
12212         if (n_patterns > coalesce->n_patterns)
12213                 return -EINVAL;
12214
12215         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12216                                      GFP_KERNEL);
12217         if (!new_rule->patterns)
12218                 return -ENOMEM;
12219
12220         new_rule->n_patterns = n_patterns;
12221         i = 0;
12222
12223         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12224                             rem) {
12225                 u8 *mask_pat;
12226
12227                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12228                                                   pat,
12229                                                   nl80211_packet_pattern_policy,
12230                                                   NULL);
12231                 if (err)
12232                         return err;
12233
12234                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12235                     !pat_tb[NL80211_PKTPAT_PATTERN])
12236                         return -EINVAL;
12237                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12238                 mask_len = DIV_ROUND_UP(pat_len, 8);
12239                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12240                         return -EINVAL;
12241                 if (pat_len > coalesce->pattern_max_len ||
12242                     pat_len < coalesce->pattern_min_len)
12243                         return -EINVAL;
12244
12245                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12246                         pkt_offset = 0;
12247                 else
12248                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12249                 if (pkt_offset > coalesce->max_pkt_offset)
12250                         return -EINVAL;
12251                 new_rule->patterns[i].pkt_offset = pkt_offset;
12252
12253                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12254                 if (!mask_pat)
12255                         return -ENOMEM;
12256
12257                 new_rule->patterns[i].mask = mask_pat;
12258                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12259                        mask_len);
12260
12261                 mask_pat += mask_len;
12262                 new_rule->patterns[i].pattern = mask_pat;
12263                 new_rule->patterns[i].pattern_len = pat_len;
12264                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12265                        pat_len);
12266                 i++;
12267         }
12268
12269         return 0;
12270 }
12271
12272 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12273 {
12274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12275         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12276         struct cfg80211_coalesce new_coalesce = {};
12277         struct cfg80211_coalesce *n_coalesce;
12278         int err, rem_rule, n_rules = 0, i, j;
12279         struct nlattr *rule;
12280         struct cfg80211_coalesce_rules *tmp_rule;
12281
12282         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12283                 return -EOPNOTSUPP;
12284
12285         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12286                 cfg80211_rdev_free_coalesce(rdev);
12287                 rdev_set_coalesce(rdev, NULL);
12288                 return 0;
12289         }
12290
12291         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12292                             rem_rule)
12293                 n_rules++;
12294         if (n_rules > coalesce->n_rules)
12295                 return -EINVAL;
12296
12297         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12298                                      GFP_KERNEL);
12299         if (!new_coalesce.rules)
12300                 return -ENOMEM;
12301
12302         new_coalesce.n_rules = n_rules;
12303         i = 0;
12304
12305         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12306                             rem_rule) {
12307                 err = nl80211_parse_coalesce_rule(rdev, rule,
12308                                                   &new_coalesce.rules[i]);
12309                 if (err)
12310                         goto error;
12311
12312                 i++;
12313         }
12314
12315         err = rdev_set_coalesce(rdev, &new_coalesce);
12316         if (err)
12317                 goto error;
12318
12319         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12320         if (!n_coalesce) {
12321                 err = -ENOMEM;
12322                 goto error;
12323         }
12324         cfg80211_rdev_free_coalesce(rdev);
12325         rdev->coalesce = n_coalesce;
12326
12327         return 0;
12328 error:
12329         for (i = 0; i < new_coalesce.n_rules; i++) {
12330                 tmp_rule = &new_coalesce.rules[i];
12331                 for (j = 0; j < tmp_rule->n_patterns; j++)
12332                         kfree(tmp_rule->patterns[j].mask);
12333                 kfree(tmp_rule->patterns);
12334         }
12335         kfree(new_coalesce.rules);
12336
12337         return err;
12338 }
12339
12340 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12341 {
12342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12343         struct net_device *dev = info->user_ptr[1];
12344         struct wireless_dev *wdev = dev->ieee80211_ptr;
12345         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12346         struct cfg80211_gtk_rekey_data rekey_data;
12347         int err;
12348
12349         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12350                 return -EINVAL;
12351
12352         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12353                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12354                                           nl80211_rekey_policy, info->extack);
12355         if (err)
12356                 return err;
12357
12358         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12359             !tb[NL80211_REKEY_DATA_KCK])
12360                 return -EINVAL;
12361         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12362                 return -ERANGE;
12363         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12364             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12365               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12366                 return -ERANGE;
12367         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12368             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12369               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12370                 return -ERANGE;
12371
12372         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12373         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12374         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12375         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12376         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12377         if (tb[NL80211_REKEY_DATA_AKM])
12378                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12379
12380         wdev_lock(wdev);
12381         if (!wdev->current_bss) {
12382                 err = -ENOTCONN;
12383                 goto out;
12384         }
12385
12386         if (!rdev->ops->set_rekey_data) {
12387                 err = -EOPNOTSUPP;
12388                 goto out;
12389         }
12390
12391         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12392  out:
12393         wdev_unlock(wdev);
12394         return err;
12395 }
12396
12397 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12398                                              struct genl_info *info)
12399 {
12400         struct net_device *dev = info->user_ptr[1];
12401         struct wireless_dev *wdev = dev->ieee80211_ptr;
12402
12403         if (wdev->iftype != NL80211_IFTYPE_AP &&
12404             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12405                 return -EINVAL;
12406
12407         if (wdev->ap_unexpected_nlportid)
12408                 return -EBUSY;
12409
12410         wdev->ap_unexpected_nlportid = info->snd_portid;
12411         return 0;
12412 }
12413
12414 static int nl80211_probe_client(struct sk_buff *skb,
12415                                 struct genl_info *info)
12416 {
12417         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12418         struct net_device *dev = info->user_ptr[1];
12419         struct wireless_dev *wdev = dev->ieee80211_ptr;
12420         struct sk_buff *msg;
12421         void *hdr;
12422         const u8 *addr;
12423         u64 cookie;
12424         int err;
12425
12426         if (wdev->iftype != NL80211_IFTYPE_AP &&
12427             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12428                 return -EOPNOTSUPP;
12429
12430         if (!info->attrs[NL80211_ATTR_MAC])
12431                 return -EINVAL;
12432
12433         if (!rdev->ops->probe_client)
12434                 return -EOPNOTSUPP;
12435
12436         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12437         if (!msg)
12438                 return -ENOMEM;
12439
12440         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12441                              NL80211_CMD_PROBE_CLIENT);
12442         if (!hdr) {
12443                 err = -ENOBUFS;
12444                 goto free_msg;
12445         }
12446
12447         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12448
12449         err = rdev_probe_client(rdev, dev, addr, &cookie);
12450         if (err)
12451                 goto free_msg;
12452
12453         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12454                               NL80211_ATTR_PAD))
12455                 goto nla_put_failure;
12456
12457         genlmsg_end(msg, hdr);
12458
12459         return genlmsg_reply(msg, info);
12460
12461  nla_put_failure:
12462         err = -ENOBUFS;
12463  free_msg:
12464         nlmsg_free(msg);
12465         return err;
12466 }
12467
12468 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12469 {
12470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12471         struct cfg80211_beacon_registration *reg, *nreg;
12472         int rv;
12473
12474         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12475                 return -EOPNOTSUPP;
12476
12477         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12478         if (!nreg)
12479                 return -ENOMEM;
12480
12481         /* First, check if already registered. */
12482         spin_lock_bh(&rdev->beacon_registrations_lock);
12483         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12484                 if (reg->nlportid == info->snd_portid) {
12485                         rv = -EALREADY;
12486                         goto out_err;
12487                 }
12488         }
12489         /* Add it to the list */
12490         nreg->nlportid = info->snd_portid;
12491         list_add(&nreg->list, &rdev->beacon_registrations);
12492
12493         spin_unlock_bh(&rdev->beacon_registrations_lock);
12494
12495         return 0;
12496 out_err:
12497         spin_unlock_bh(&rdev->beacon_registrations_lock);
12498         kfree(nreg);
12499         return rv;
12500 }
12501
12502 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12503 {
12504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12505         struct wireless_dev *wdev = info->user_ptr[1];
12506         int err;
12507
12508         if (!rdev->ops->start_p2p_device)
12509                 return -EOPNOTSUPP;
12510
12511         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12512                 return -EOPNOTSUPP;
12513
12514         if (wdev_running(wdev))
12515                 return 0;
12516
12517         if (rfkill_blocked(rdev->rfkill))
12518                 return -ERFKILL;
12519
12520         err = rdev_start_p2p_device(rdev, wdev);
12521         if (err)
12522                 return err;
12523
12524         wdev->is_running = true;
12525         rdev->opencount++;
12526
12527         return 0;
12528 }
12529
12530 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12531 {
12532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12533         struct wireless_dev *wdev = info->user_ptr[1];
12534
12535         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12536                 return -EOPNOTSUPP;
12537
12538         if (!rdev->ops->stop_p2p_device)
12539                 return -EOPNOTSUPP;
12540
12541         cfg80211_stop_p2p_device(rdev, wdev);
12542
12543         return 0;
12544 }
12545
12546 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12547 {
12548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12549         struct wireless_dev *wdev = info->user_ptr[1];
12550         struct cfg80211_nan_conf conf = {};
12551         int err;
12552
12553         if (wdev->iftype != NL80211_IFTYPE_NAN)
12554                 return -EOPNOTSUPP;
12555
12556         if (wdev_running(wdev))
12557                 return -EEXIST;
12558
12559         if (rfkill_blocked(rdev->rfkill))
12560                 return -ERFKILL;
12561
12562         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12563                 return -EINVAL;
12564
12565         conf.master_pref =
12566                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12567
12568         if (info->attrs[NL80211_ATTR_BANDS]) {
12569                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12570
12571                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12572                         return -EOPNOTSUPP;
12573
12574                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12575                         return -EINVAL;
12576
12577                 conf.bands = bands;
12578         }
12579
12580         err = rdev_start_nan(rdev, wdev, &conf);
12581         if (err)
12582                 return err;
12583
12584         wdev->is_running = true;
12585         rdev->opencount++;
12586
12587         return 0;
12588 }
12589
12590 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12591 {
12592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12593         struct wireless_dev *wdev = info->user_ptr[1];
12594
12595         if (wdev->iftype != NL80211_IFTYPE_NAN)
12596                 return -EOPNOTSUPP;
12597
12598         cfg80211_stop_nan(rdev, wdev);
12599
12600         return 0;
12601 }
12602
12603 static int validate_nan_filter(struct nlattr *filter_attr)
12604 {
12605         struct nlattr *attr;
12606         int len = 0, n_entries = 0, rem;
12607
12608         nla_for_each_nested(attr, filter_attr, rem) {
12609                 len += nla_len(attr);
12610                 n_entries++;
12611         }
12612
12613         if (len >= U8_MAX)
12614                 return -EINVAL;
12615
12616         return n_entries;
12617 }
12618
12619 static int handle_nan_filter(struct nlattr *attr_filter,
12620                              struct cfg80211_nan_func *func,
12621                              bool tx)
12622 {
12623         struct nlattr *attr;
12624         int n_entries, rem, i;
12625         struct cfg80211_nan_func_filter *filter;
12626
12627         n_entries = validate_nan_filter(attr_filter);
12628         if (n_entries < 0)
12629                 return n_entries;
12630
12631         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12632
12633         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12634         if (!filter)
12635                 return -ENOMEM;
12636
12637         i = 0;
12638         nla_for_each_nested(attr, attr_filter, rem) {
12639                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12640                 filter[i].len = nla_len(attr);
12641                 i++;
12642         }
12643         if (tx) {
12644                 func->num_tx_filters = n_entries;
12645                 func->tx_filters = filter;
12646         } else {
12647                 func->num_rx_filters = n_entries;
12648                 func->rx_filters = filter;
12649         }
12650
12651         return 0;
12652 }
12653
12654 static int nl80211_nan_add_func(struct sk_buff *skb,
12655                                 struct genl_info *info)
12656 {
12657         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12658         struct wireless_dev *wdev = info->user_ptr[1];
12659         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12660         struct cfg80211_nan_func *func;
12661         struct sk_buff *msg = NULL;
12662         void *hdr = NULL;
12663         int err = 0;
12664
12665         if (wdev->iftype != NL80211_IFTYPE_NAN)
12666                 return -EOPNOTSUPP;
12667
12668         if (!wdev_running(wdev))
12669                 return -ENOTCONN;
12670
12671         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12672                 return -EINVAL;
12673
12674         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12675                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12676                                           nl80211_nan_func_policy,
12677                                           info->extack);
12678         if (err)
12679                 return err;
12680
12681         func = kzalloc(sizeof(*func), GFP_KERNEL);
12682         if (!func)
12683                 return -ENOMEM;
12684
12685         func->cookie = cfg80211_assign_cookie(rdev);
12686
12687         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12688             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12689                 err = -EINVAL;
12690                 goto out;
12691         }
12692
12693
12694         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12695
12696         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12697                 err = -EINVAL;
12698                 goto out;
12699         }
12700
12701         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12702                sizeof(func->service_id));
12703
12704         func->close_range =
12705                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12706
12707         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12708                 func->serv_spec_info_len =
12709                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12710                 func->serv_spec_info =
12711                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12712                                 func->serv_spec_info_len,
12713                                 GFP_KERNEL);
12714                 if (!func->serv_spec_info) {
12715                         err = -ENOMEM;
12716                         goto out;
12717                 }
12718         }
12719
12720         if (tb[NL80211_NAN_FUNC_TTL])
12721                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12722
12723         switch (func->type) {
12724         case NL80211_NAN_FUNC_PUBLISH:
12725                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12726                         err = -EINVAL;
12727                         goto out;
12728                 }
12729
12730                 func->publish_type =
12731                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12732                 func->publish_bcast =
12733                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12734
12735                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12736                         func->publish_bcast) {
12737                         err = -EINVAL;
12738                         goto out;
12739                 }
12740                 break;
12741         case NL80211_NAN_FUNC_SUBSCRIBE:
12742                 func->subscribe_active =
12743                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12744                 break;
12745         case NL80211_NAN_FUNC_FOLLOW_UP:
12746                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12747                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12748                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12749                         err = -EINVAL;
12750                         goto out;
12751                 }
12752
12753                 func->followup_id =
12754                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12755                 func->followup_reqid =
12756                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12757                 memcpy(func->followup_dest.addr,
12758                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12759                        sizeof(func->followup_dest.addr));
12760                 if (func->ttl) {
12761                         err = -EINVAL;
12762                         goto out;
12763                 }
12764                 break;
12765         default:
12766                 err = -EINVAL;
12767                 goto out;
12768         }
12769
12770         if (tb[NL80211_NAN_FUNC_SRF]) {
12771                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12772
12773                 err = nla_parse_nested_deprecated(srf_tb,
12774                                                   NL80211_NAN_SRF_ATTR_MAX,
12775                                                   tb[NL80211_NAN_FUNC_SRF],
12776                                                   nl80211_nan_srf_policy,
12777                                                   info->extack);
12778                 if (err)
12779                         goto out;
12780
12781                 func->srf_include =
12782                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12783
12784                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12785                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12786                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12787                                 err = -EINVAL;
12788                                 goto out;
12789                         }
12790
12791                         func->srf_bf_len =
12792                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12793                         func->srf_bf =
12794                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12795                                         func->srf_bf_len, GFP_KERNEL);
12796                         if (!func->srf_bf) {
12797                                 err = -ENOMEM;
12798                                 goto out;
12799                         }
12800
12801                         func->srf_bf_idx =
12802                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12803                 } else {
12804                         struct nlattr *attr, *mac_attr =
12805                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12806                         int n_entries, rem, i = 0;
12807
12808                         if (!mac_attr) {
12809                                 err = -EINVAL;
12810                                 goto out;
12811                         }
12812
12813                         n_entries = validate_acl_mac_addrs(mac_attr);
12814                         if (n_entries <= 0) {
12815                                 err = -EINVAL;
12816                                 goto out;
12817                         }
12818
12819                         func->srf_num_macs = n_entries;
12820                         func->srf_macs =
12821                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12822                                         GFP_KERNEL);
12823                         if (!func->srf_macs) {
12824                                 err = -ENOMEM;
12825                                 goto out;
12826                         }
12827
12828                         nla_for_each_nested(attr, mac_attr, rem)
12829                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12830                                        sizeof(*func->srf_macs));
12831                 }
12832         }
12833
12834         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12835                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12836                                         func, true);
12837                 if (err)
12838                         goto out;
12839         }
12840
12841         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12842                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12843                                         func, false);
12844                 if (err)
12845                         goto out;
12846         }
12847
12848         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12849         if (!msg) {
12850                 err = -ENOMEM;
12851                 goto out;
12852         }
12853
12854         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12855                              NL80211_CMD_ADD_NAN_FUNCTION);
12856         /* This can't really happen - we just allocated 4KB */
12857         if (WARN_ON(!hdr)) {
12858                 err = -ENOMEM;
12859                 goto out;
12860         }
12861
12862         err = rdev_add_nan_func(rdev, wdev, func);
12863 out:
12864         if (err < 0) {
12865                 cfg80211_free_nan_func(func);
12866                 nlmsg_free(msg);
12867                 return err;
12868         }
12869
12870         /* propagate the instance id and cookie to userspace  */
12871         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12872                               NL80211_ATTR_PAD))
12873                 goto nla_put_failure;
12874
12875         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12876         if (!func_attr)
12877                 goto nla_put_failure;
12878
12879         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12880                        func->instance_id))
12881                 goto nla_put_failure;
12882
12883         nla_nest_end(msg, func_attr);
12884
12885         genlmsg_end(msg, hdr);
12886         return genlmsg_reply(msg, info);
12887
12888 nla_put_failure:
12889         nlmsg_free(msg);
12890         return -ENOBUFS;
12891 }
12892
12893 static int nl80211_nan_del_func(struct sk_buff *skb,
12894                                struct genl_info *info)
12895 {
12896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12897         struct wireless_dev *wdev = info->user_ptr[1];
12898         u64 cookie;
12899
12900         if (wdev->iftype != NL80211_IFTYPE_NAN)
12901                 return -EOPNOTSUPP;
12902
12903         if (!wdev_running(wdev))
12904                 return -ENOTCONN;
12905
12906         if (!info->attrs[NL80211_ATTR_COOKIE])
12907                 return -EINVAL;
12908
12909         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12910
12911         rdev_del_nan_func(rdev, wdev, cookie);
12912
12913         return 0;
12914 }
12915
12916 static int nl80211_nan_change_config(struct sk_buff *skb,
12917                                      struct genl_info *info)
12918 {
12919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12920         struct wireless_dev *wdev = info->user_ptr[1];
12921         struct cfg80211_nan_conf conf = {};
12922         u32 changed = 0;
12923
12924         if (wdev->iftype != NL80211_IFTYPE_NAN)
12925                 return -EOPNOTSUPP;
12926
12927         if (!wdev_running(wdev))
12928                 return -ENOTCONN;
12929
12930         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12931                 conf.master_pref =
12932                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12933                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12934                         return -EINVAL;
12935
12936                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12937         }
12938
12939         if (info->attrs[NL80211_ATTR_BANDS]) {
12940                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12941
12942                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12943                         return -EOPNOTSUPP;
12944
12945                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12946                         return -EINVAL;
12947
12948                 conf.bands = bands;
12949                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12950         }
12951
12952         if (!changed)
12953                 return -EINVAL;
12954
12955         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12956 }
12957
12958 void cfg80211_nan_match(struct wireless_dev *wdev,
12959                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12960 {
12961         struct wiphy *wiphy = wdev->wiphy;
12962         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12963         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12964         struct sk_buff *msg;
12965         void *hdr;
12966
12967         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12968                 return;
12969
12970         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12971         if (!msg)
12972                 return;
12973
12974         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12975         if (!hdr) {
12976                 nlmsg_free(msg);
12977                 return;
12978         }
12979
12980         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12981             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12982                                          wdev->netdev->ifindex)) ||
12983             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12984                               NL80211_ATTR_PAD))
12985                 goto nla_put_failure;
12986
12987         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12988                               NL80211_ATTR_PAD) ||
12989             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12990                 goto nla_put_failure;
12991
12992         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12993         if (!match_attr)
12994                 goto nla_put_failure;
12995
12996         local_func_attr = nla_nest_start_noflag(msg,
12997                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12998         if (!local_func_attr)
12999                 goto nla_put_failure;
13000
13001         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13002                 goto nla_put_failure;
13003
13004         nla_nest_end(msg, local_func_attr);
13005
13006         peer_func_attr = nla_nest_start_noflag(msg,
13007                                                NL80211_NAN_MATCH_FUNC_PEER);
13008         if (!peer_func_attr)
13009                 goto nla_put_failure;
13010
13011         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13012             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13013                 goto nla_put_failure;
13014
13015         if (match->info && match->info_len &&
13016             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13017                     match->info))
13018                 goto nla_put_failure;
13019
13020         nla_nest_end(msg, peer_func_attr);
13021         nla_nest_end(msg, match_attr);
13022         genlmsg_end(msg, hdr);
13023
13024         if (!wdev->owner_nlportid)
13025                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13026                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13027         else
13028                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13029                                 wdev->owner_nlportid);
13030
13031         return;
13032
13033 nla_put_failure:
13034         nlmsg_free(msg);
13035 }
13036 EXPORT_SYMBOL(cfg80211_nan_match);
13037
13038 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13039                                   u8 inst_id,
13040                                   enum nl80211_nan_func_term_reason reason,
13041                                   u64 cookie, gfp_t gfp)
13042 {
13043         struct wiphy *wiphy = wdev->wiphy;
13044         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13045         struct sk_buff *msg;
13046         struct nlattr *func_attr;
13047         void *hdr;
13048
13049         if (WARN_ON(!inst_id))
13050                 return;
13051
13052         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13053         if (!msg)
13054                 return;
13055
13056         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13057         if (!hdr) {
13058                 nlmsg_free(msg);
13059                 return;
13060         }
13061
13062         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13063             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13064                                          wdev->netdev->ifindex)) ||
13065             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13066                               NL80211_ATTR_PAD))
13067                 goto nla_put_failure;
13068
13069         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13070                               NL80211_ATTR_PAD))
13071                 goto nla_put_failure;
13072
13073         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13074         if (!func_attr)
13075                 goto nla_put_failure;
13076
13077         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13078             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13079                 goto nla_put_failure;
13080
13081         nla_nest_end(msg, func_attr);
13082         genlmsg_end(msg, hdr);
13083
13084         if (!wdev->owner_nlportid)
13085                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13086                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13087         else
13088                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13089                                 wdev->owner_nlportid);
13090
13091         return;
13092
13093 nla_put_failure:
13094         nlmsg_free(msg);
13095 }
13096 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13097
13098 static int nl80211_get_protocol_features(struct sk_buff *skb,
13099                                          struct genl_info *info)
13100 {
13101         void *hdr;
13102         struct sk_buff *msg;
13103
13104         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13105         if (!msg)
13106                 return -ENOMEM;
13107
13108         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13109                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13110         if (!hdr)
13111                 goto nla_put_failure;
13112
13113         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13114                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13115                 goto nla_put_failure;
13116
13117         genlmsg_end(msg, hdr);
13118         return genlmsg_reply(msg, info);
13119
13120  nla_put_failure:
13121         kfree_skb(msg);
13122         return -ENOBUFS;
13123 }
13124
13125 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13126 {
13127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13128         struct cfg80211_update_ft_ies_params ft_params;
13129         struct net_device *dev = info->user_ptr[1];
13130
13131         if (!rdev->ops->update_ft_ies)
13132                 return -EOPNOTSUPP;
13133
13134         if (!info->attrs[NL80211_ATTR_MDID] ||
13135             !info->attrs[NL80211_ATTR_IE])
13136                 return -EINVAL;
13137
13138         memset(&ft_params, 0, sizeof(ft_params));
13139         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13140         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13141         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13142
13143         return rdev_update_ft_ies(rdev, dev, &ft_params);
13144 }
13145
13146 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13147                                        struct genl_info *info)
13148 {
13149         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13150         struct wireless_dev *wdev = info->user_ptr[1];
13151         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13152         u16 duration;
13153         int ret;
13154
13155         if (!rdev->ops->crit_proto_start)
13156                 return -EOPNOTSUPP;
13157
13158         if (WARN_ON(!rdev->ops->crit_proto_stop))
13159                 return -EINVAL;
13160
13161         if (rdev->crit_proto_nlportid)
13162                 return -EBUSY;
13163
13164         /* determine protocol if provided */
13165         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13166                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13167
13168         if (proto >= NUM_NL80211_CRIT_PROTO)
13169                 return -EINVAL;
13170
13171         /* timeout must be provided */
13172         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13173                 return -EINVAL;
13174
13175         duration =
13176                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13177
13178         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13179                 return -ERANGE;
13180
13181         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13182         if (!ret)
13183                 rdev->crit_proto_nlportid = info->snd_portid;
13184
13185         return ret;
13186 }
13187
13188 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13189                                       struct genl_info *info)
13190 {
13191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13192         struct wireless_dev *wdev = info->user_ptr[1];
13193
13194         if (!rdev->ops->crit_proto_stop)
13195                 return -EOPNOTSUPP;
13196
13197         if (rdev->crit_proto_nlportid) {
13198                 rdev->crit_proto_nlportid = 0;
13199                 rdev_crit_proto_stop(rdev, wdev);
13200         }
13201         return 0;
13202 }
13203
13204 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13205                                        struct nlattr *attr,
13206                                        struct netlink_ext_ack *extack)
13207 {
13208         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13209                 if (attr->nla_type & NLA_F_NESTED) {
13210                         NL_SET_ERR_MSG_ATTR(extack, attr,
13211                                             "unexpected nested data");
13212                         return -EINVAL;
13213                 }
13214
13215                 return 0;
13216         }
13217
13218         if (!(attr->nla_type & NLA_F_NESTED)) {
13219                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13220                 return -EINVAL;
13221         }
13222
13223         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13224 }
13225
13226 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13227 {
13228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13229         struct wireless_dev *wdev =
13230                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13231         int i, err;
13232         u32 vid, subcmd;
13233
13234         if (!rdev->wiphy.vendor_commands)
13235                 return -EOPNOTSUPP;
13236
13237         if (IS_ERR(wdev)) {
13238                 err = PTR_ERR(wdev);
13239                 if (err != -EINVAL)
13240                         return err;
13241                 wdev = NULL;
13242         } else if (wdev->wiphy != &rdev->wiphy) {
13243                 return -EINVAL;
13244         }
13245
13246         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13247             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13248                 return -EINVAL;
13249
13250         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13251         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13252         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13253                 const struct wiphy_vendor_command *vcmd;
13254                 void *data = NULL;
13255                 int len = 0;
13256
13257                 vcmd = &rdev->wiphy.vendor_commands[i];
13258
13259                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13260                         continue;
13261
13262                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13263                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13264                         if (!wdev)
13265                                 return -EINVAL;
13266                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13267                             !wdev->netdev)
13268                                 return -EINVAL;
13269
13270                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13271                                 if (!wdev_running(wdev))
13272                                         return -ENETDOWN;
13273                         }
13274                 } else {
13275                         wdev = NULL;
13276                 }
13277
13278                 if (!vcmd->doit)
13279                         return -EOPNOTSUPP;
13280
13281                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13282                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13283                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13284
13285                         err = nl80211_vendor_check_policy(vcmd,
13286                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13287                                         info->extack);
13288                         if (err)
13289                                 return err;
13290                 }
13291
13292                 rdev->cur_cmd_info = info;
13293                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13294                 rdev->cur_cmd_info = NULL;
13295                 return err;
13296         }
13297
13298         return -EOPNOTSUPP;
13299 }
13300
13301 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13302                                        struct netlink_callback *cb,
13303                                        struct cfg80211_registered_device **rdev,
13304                                        struct wireless_dev **wdev)
13305 {
13306         struct nlattr **attrbuf;
13307         u32 vid, subcmd;
13308         unsigned int i;
13309         int vcmd_idx = -1;
13310         int err;
13311         void *data = NULL;
13312         unsigned int data_len = 0;
13313
13314         if (cb->args[0]) {
13315                 /* subtract the 1 again here */
13316                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13317                 struct wireless_dev *tmp;
13318
13319                 if (!wiphy)
13320                         return -ENODEV;
13321                 *rdev = wiphy_to_rdev(wiphy);
13322                 *wdev = NULL;
13323
13324                 if (cb->args[1]) {
13325                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13326                                 if (tmp->identifier == cb->args[1] - 1) {
13327                                         *wdev = tmp;
13328                                         break;
13329                                 }
13330                         }
13331                 }
13332
13333                 /* keep rtnl locked in successful case */
13334                 return 0;
13335         }
13336
13337         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13338         if (!attrbuf)
13339                 return -ENOMEM;
13340
13341         err = nlmsg_parse_deprecated(cb->nlh,
13342                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13343                                      attrbuf, nl80211_fam.maxattr,
13344                                      nl80211_policy, NULL);
13345         if (err)
13346                 goto out;
13347
13348         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13349             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13350                 err = -EINVAL;
13351                 goto out;
13352         }
13353
13354         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13355         if (IS_ERR(*wdev))
13356                 *wdev = NULL;
13357
13358         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13359         if (IS_ERR(*rdev)) {
13360                 err = PTR_ERR(*rdev);
13361                 goto out;
13362         }
13363
13364         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13365         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13366
13367         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13368                 const struct wiphy_vendor_command *vcmd;
13369
13370                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13371
13372                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13373                         continue;
13374
13375                 if (!vcmd->dumpit) {
13376                         err = -EOPNOTSUPP;
13377                         goto out;
13378                 }
13379
13380                 vcmd_idx = i;
13381                 break;
13382         }
13383
13384         if (vcmd_idx < 0) {
13385                 err = -EOPNOTSUPP;
13386                 goto out;
13387         }
13388
13389         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13390                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13391                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13392
13393                 err = nl80211_vendor_check_policy(
13394                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13395                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13396                                 cb->extack);
13397                 if (err)
13398                         goto out;
13399         }
13400
13401         /* 0 is the first index - add 1 to parse only once */
13402         cb->args[0] = (*rdev)->wiphy_idx + 1;
13403         /* add 1 to know if it was NULL */
13404         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13405         cb->args[2] = vcmd_idx;
13406         cb->args[3] = (unsigned long)data;
13407         cb->args[4] = data_len;
13408
13409         /* keep rtnl locked in successful case */
13410         err = 0;
13411 out:
13412         kfree(attrbuf);
13413         return err;
13414 }
13415
13416 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13417                                    struct netlink_callback *cb)
13418 {
13419         struct cfg80211_registered_device *rdev;
13420         struct wireless_dev *wdev;
13421         unsigned int vcmd_idx;
13422         const struct wiphy_vendor_command *vcmd;
13423         void *data;
13424         int data_len;
13425         int err;
13426         struct nlattr *vendor_data;
13427
13428         rtnl_lock();
13429         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13430         if (err)
13431                 goto out;
13432
13433         vcmd_idx = cb->args[2];
13434         data = (void *)cb->args[3];
13435         data_len = cb->args[4];
13436         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13437
13438         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13439                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13440                 if (!wdev) {
13441                         err = -EINVAL;
13442                         goto out;
13443                 }
13444                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13445                     !wdev->netdev) {
13446                         err = -EINVAL;
13447                         goto out;
13448                 }
13449
13450                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13451                         if (!wdev_running(wdev)) {
13452                                 err = -ENETDOWN;
13453                                 goto out;
13454                         }
13455                 }
13456         }
13457
13458         while (1) {
13459                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13460                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13461                                            NL80211_CMD_VENDOR);
13462                 if (!hdr)
13463                         break;
13464
13465                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13466                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13467                                                wdev_id(wdev),
13468                                                NL80211_ATTR_PAD))) {
13469                         genlmsg_cancel(skb, hdr);
13470                         break;
13471                 }
13472
13473                 vendor_data = nla_nest_start_noflag(skb,
13474                                                     NL80211_ATTR_VENDOR_DATA);
13475                 if (!vendor_data) {
13476                         genlmsg_cancel(skb, hdr);
13477                         break;
13478                 }
13479
13480                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13481                                    (unsigned long *)&cb->args[5]);
13482                 nla_nest_end(skb, vendor_data);
13483
13484                 if (err == -ENOBUFS || err == -ENOENT) {
13485                         genlmsg_cancel(skb, hdr);
13486                         break;
13487                 } else if (err <= 0) {
13488                         genlmsg_cancel(skb, hdr);
13489                         goto out;
13490                 }
13491
13492                 genlmsg_end(skb, hdr);
13493         }
13494
13495         err = skb->len;
13496  out:
13497         rtnl_unlock();
13498         return err;
13499 }
13500
13501 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13502                                            enum nl80211_commands cmd,
13503                                            enum nl80211_attrs attr,
13504                                            int approxlen)
13505 {
13506         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13507
13508         if (WARN_ON(!rdev->cur_cmd_info))
13509                 return NULL;
13510
13511         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13512                                            rdev->cur_cmd_info->snd_portid,
13513                                            rdev->cur_cmd_info->snd_seq,
13514                                            cmd, attr, NULL, GFP_KERNEL);
13515 }
13516 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13517
13518 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13519 {
13520         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13521         void *hdr = ((void **)skb->cb)[1];
13522         struct nlattr *data = ((void **)skb->cb)[2];
13523
13524         /* clear CB data for netlink core to own from now on */
13525         memset(skb->cb, 0, sizeof(skb->cb));
13526
13527         if (WARN_ON(!rdev->cur_cmd_info)) {
13528                 kfree_skb(skb);
13529                 return -EINVAL;
13530         }
13531
13532         nla_nest_end(skb, data);
13533         genlmsg_end(skb, hdr);
13534         return genlmsg_reply(skb, rdev->cur_cmd_info);
13535 }
13536 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13537
13538 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13539 {
13540         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13541
13542         if (WARN_ON(!rdev->cur_cmd_info))
13543                 return 0;
13544
13545         return rdev->cur_cmd_info->snd_portid;
13546 }
13547 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13548
13549 static int nl80211_set_qos_map(struct sk_buff *skb,
13550                                struct genl_info *info)
13551 {
13552         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13553         struct cfg80211_qos_map *qos_map = NULL;
13554         struct net_device *dev = info->user_ptr[1];
13555         u8 *pos, len, num_des, des_len, des;
13556         int ret;
13557
13558         if (!rdev->ops->set_qos_map)
13559                 return -EOPNOTSUPP;
13560
13561         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13562                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13563                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13564
13565                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13566                     len > IEEE80211_QOS_MAP_LEN_MAX)
13567                         return -EINVAL;
13568
13569                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13570                 if (!qos_map)
13571                         return -ENOMEM;
13572
13573                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13574                 if (num_des) {
13575                         des_len = num_des *
13576                                 sizeof(struct cfg80211_dscp_exception);
13577                         memcpy(qos_map->dscp_exception, pos, des_len);
13578                         qos_map->num_des = num_des;
13579                         for (des = 0; des < num_des; des++) {
13580                                 if (qos_map->dscp_exception[des].up > 7) {
13581                                         kfree(qos_map);
13582                                         return -EINVAL;
13583                                 }
13584                         }
13585                         pos += des_len;
13586                 }
13587                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13588         }
13589
13590         wdev_lock(dev->ieee80211_ptr);
13591         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13592         if (!ret)
13593                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13594         wdev_unlock(dev->ieee80211_ptr);
13595
13596         kfree(qos_map);
13597         return ret;
13598 }
13599
13600 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13601 {
13602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13603         struct net_device *dev = info->user_ptr[1];
13604         struct wireless_dev *wdev = dev->ieee80211_ptr;
13605         const u8 *peer;
13606         u8 tsid, up;
13607         u16 admitted_time = 0;
13608         int err;
13609
13610         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13611                 return -EOPNOTSUPP;
13612
13613         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13614             !info->attrs[NL80211_ATTR_USER_PRIO])
13615                 return -EINVAL;
13616
13617         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13618         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13619
13620         /* WMM uses TIDs 0-7 even for TSPEC */
13621         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13622                 /* TODO: handle 802.11 TSPEC/admission control
13623                  * need more attributes for that (e.g. BA session requirement);
13624                  * change the WMM adminssion test above to allow both then
13625                  */
13626                 return -EINVAL;
13627         }
13628
13629         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13630
13631         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13632                 admitted_time =
13633                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13634                 if (!admitted_time)
13635                         return -EINVAL;
13636         }
13637
13638         wdev_lock(wdev);
13639         switch (wdev->iftype) {
13640         case NL80211_IFTYPE_STATION:
13641         case NL80211_IFTYPE_P2P_CLIENT:
13642                 if (wdev->current_bss)
13643                         break;
13644                 err = -ENOTCONN;
13645                 goto out;
13646         default:
13647                 err = -EOPNOTSUPP;
13648                 goto out;
13649         }
13650
13651         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13652
13653  out:
13654         wdev_unlock(wdev);
13655         return err;
13656 }
13657
13658 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13659 {
13660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13661         struct net_device *dev = info->user_ptr[1];
13662         struct wireless_dev *wdev = dev->ieee80211_ptr;
13663         const u8 *peer;
13664         u8 tsid;
13665         int err;
13666
13667         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13668                 return -EINVAL;
13669
13670         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13671         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13672
13673         wdev_lock(wdev);
13674         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13675         wdev_unlock(wdev);
13676
13677         return err;
13678 }
13679
13680 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13681                                        struct genl_info *info)
13682 {
13683         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13684         struct net_device *dev = info->user_ptr[1];
13685         struct wireless_dev *wdev = dev->ieee80211_ptr;
13686         struct cfg80211_chan_def chandef = {};
13687         const u8 *addr;
13688         u8 oper_class;
13689         int err;
13690
13691         if (!rdev->ops->tdls_channel_switch ||
13692             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13693                 return -EOPNOTSUPP;
13694
13695         switch (dev->ieee80211_ptr->iftype) {
13696         case NL80211_IFTYPE_STATION:
13697         case NL80211_IFTYPE_P2P_CLIENT:
13698                 break;
13699         default:
13700                 return -EOPNOTSUPP;
13701         }
13702
13703         if (!info->attrs[NL80211_ATTR_MAC] ||
13704             !info->attrs[NL80211_ATTR_OPER_CLASS])
13705                 return -EINVAL;
13706
13707         err = nl80211_parse_chandef(rdev, info, &chandef);
13708         if (err)
13709                 return err;
13710
13711         /*
13712          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13713          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13714          * specification is not defined for them.
13715          */
13716         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13717             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13718             chandef.width != NL80211_CHAN_WIDTH_20)
13719                 return -EINVAL;
13720
13721         /* we will be active on the TDLS link */
13722         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13723                                            wdev->iftype))
13724                 return -EINVAL;
13725
13726         /* don't allow switching to DFS channels */
13727         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13728                 return -EINVAL;
13729
13730         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13731         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13732
13733         wdev_lock(wdev);
13734         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13735         wdev_unlock(wdev);
13736
13737         return err;
13738 }
13739
13740 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13741                                               struct genl_info *info)
13742 {
13743         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13744         struct net_device *dev = info->user_ptr[1];
13745         struct wireless_dev *wdev = dev->ieee80211_ptr;
13746         const u8 *addr;
13747
13748         if (!rdev->ops->tdls_channel_switch ||
13749             !rdev->ops->tdls_cancel_channel_switch ||
13750             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13751                 return -EOPNOTSUPP;
13752
13753         switch (dev->ieee80211_ptr->iftype) {
13754         case NL80211_IFTYPE_STATION:
13755         case NL80211_IFTYPE_P2P_CLIENT:
13756                 break;
13757         default:
13758                 return -EOPNOTSUPP;
13759         }
13760
13761         if (!info->attrs[NL80211_ATTR_MAC])
13762                 return -EINVAL;
13763
13764         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13765
13766         wdev_lock(wdev);
13767         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13768         wdev_unlock(wdev);
13769
13770         return 0;
13771 }
13772
13773 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13774                                             struct genl_info *info)
13775 {
13776         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13777         struct net_device *dev = info->user_ptr[1];
13778         struct wireless_dev *wdev = dev->ieee80211_ptr;
13779         const struct nlattr *nla;
13780         bool enabled;
13781
13782         if (!rdev->ops->set_multicast_to_unicast)
13783                 return -EOPNOTSUPP;
13784
13785         if (wdev->iftype != NL80211_IFTYPE_AP &&
13786             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13787                 return -EOPNOTSUPP;
13788
13789         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13790         enabled = nla_get_flag(nla);
13791
13792         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13793 }
13794
13795 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13796 {
13797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13798         struct net_device *dev = info->user_ptr[1];
13799         struct wireless_dev *wdev = dev->ieee80211_ptr;
13800         struct cfg80211_pmk_conf pmk_conf = {};
13801         int ret;
13802
13803         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13804             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13805                 return -EOPNOTSUPP;
13806
13807         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13808                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13809                 return -EOPNOTSUPP;
13810
13811         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13812                 return -EINVAL;
13813
13814         wdev_lock(wdev);
13815         if (!wdev->current_bss) {
13816                 ret = -ENOTCONN;
13817                 goto out;
13818         }
13819
13820         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13821         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13822                 ret = -EINVAL;
13823                 goto out;
13824         }
13825
13826         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13827         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13828         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13829             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13830                 ret = -EINVAL;
13831                 goto out;
13832         }
13833
13834         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13835                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13836
13837                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13838                         ret = -EINVAL;
13839                         goto out;
13840                 }
13841
13842                 pmk_conf.pmk_r0_name =
13843                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13844         }
13845
13846         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13847 out:
13848         wdev_unlock(wdev);
13849         return ret;
13850 }
13851
13852 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13853 {
13854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13855         struct net_device *dev = info->user_ptr[1];
13856         struct wireless_dev *wdev = dev->ieee80211_ptr;
13857         const u8 *aa;
13858         int ret;
13859
13860         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13861             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13862                 return -EOPNOTSUPP;
13863
13864         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13865                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13866                 return -EOPNOTSUPP;
13867
13868         if (!info->attrs[NL80211_ATTR_MAC])
13869                 return -EINVAL;
13870
13871         wdev_lock(wdev);
13872         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13873         ret = rdev_del_pmk(rdev, dev, aa);
13874         wdev_unlock(wdev);
13875
13876         return ret;
13877 }
13878
13879 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13880 {
13881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13882         struct net_device *dev = info->user_ptr[1];
13883         struct cfg80211_external_auth_params params;
13884
13885         if (!rdev->ops->external_auth)
13886                 return -EOPNOTSUPP;
13887
13888         if (!info->attrs[NL80211_ATTR_SSID] &&
13889             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13890             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13891                 return -EINVAL;
13892
13893         if (!info->attrs[NL80211_ATTR_BSSID])
13894                 return -EINVAL;
13895
13896         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13897                 return -EINVAL;
13898
13899         memset(&params, 0, sizeof(params));
13900
13901         if (info->attrs[NL80211_ATTR_SSID]) {
13902                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13903                 if (params.ssid.ssid_len == 0 ||
13904                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13905                         return -EINVAL;
13906                 memcpy(params.ssid.ssid,
13907                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13908                        params.ssid.ssid_len);
13909         }
13910
13911         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13912                ETH_ALEN);
13913
13914         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13915
13916         if (info->attrs[NL80211_ATTR_PMKID])
13917                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13918
13919         return rdev_external_auth(rdev, dev, &params);
13920 }
13921
13922 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13923 {
13924         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
13925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13926         struct net_device *dev = info->user_ptr[1];
13927         struct wireless_dev *wdev = dev->ieee80211_ptr;
13928         const u8 *buf;
13929         size_t len;
13930         u8 *dest;
13931         u16 proto;
13932         bool noencrypt;
13933         u64 cookie = 0;
13934         int err;
13935
13936         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13937                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13938                 return -EOPNOTSUPP;
13939
13940         if (!rdev->ops->tx_control_port)
13941                 return -EOPNOTSUPP;
13942
13943         if (!info->attrs[NL80211_ATTR_FRAME] ||
13944             !info->attrs[NL80211_ATTR_MAC] ||
13945             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13946                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13947                 return -EINVAL;
13948         }
13949
13950         wdev_lock(wdev);
13951
13952         switch (wdev->iftype) {
13953         case NL80211_IFTYPE_AP:
13954         case NL80211_IFTYPE_P2P_GO:
13955         case NL80211_IFTYPE_MESH_POINT:
13956                 break;
13957         case NL80211_IFTYPE_ADHOC:
13958         case NL80211_IFTYPE_STATION:
13959         case NL80211_IFTYPE_P2P_CLIENT:
13960                 if (wdev->current_bss)
13961                         break;
13962                 err = -ENOTCONN;
13963                 goto out;
13964         default:
13965                 err = -EOPNOTSUPP;
13966                 goto out;
13967         }
13968
13969         wdev_unlock(wdev);
13970
13971         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13972         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13973         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13974         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13975         noencrypt =
13976                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13977
13978         err = rdev_tx_control_port(rdev, dev, buf, len,
13979                                    dest, cpu_to_be16(proto), noencrypt,
13980                                    dont_wait_for_ack ? NULL : &cookie);
13981         if (!err && !dont_wait_for_ack)
13982                 nl_set_extack_cookie_u64(info->extack, cookie);
13983         return err;
13984  out:
13985         wdev_unlock(wdev);
13986         return err;
13987 }
13988
13989 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13990                                            struct genl_info *info)
13991 {
13992         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13993         struct net_device *dev = info->user_ptr[1];
13994         struct wireless_dev *wdev = dev->ieee80211_ptr;
13995         struct cfg80211_ftm_responder_stats ftm_stats = {};
13996         struct sk_buff *msg;
13997         void *hdr;
13998         struct nlattr *ftm_stats_attr;
13999         int err;
14000
14001         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14002                 return -EOPNOTSUPP;
14003
14004         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14005         if (err)
14006                 return err;
14007
14008         if (!ftm_stats.filled)
14009                 return -ENODATA;
14010
14011         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14012         if (!msg)
14013                 return -ENOMEM;
14014
14015         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14016                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14017         if (!hdr)
14018                 goto nla_put_failure;
14019
14020         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14021                 goto nla_put_failure;
14022
14023         ftm_stats_attr = nla_nest_start_noflag(msg,
14024                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14025         if (!ftm_stats_attr)
14026                 goto nla_put_failure;
14027
14028 #define SET_FTM(field, name, type)                                       \
14029         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14030             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14031                              ftm_stats.field))                           \
14032                 goto nla_put_failure; } while (0)
14033 #define SET_FTM_U64(field, name)                                         \
14034         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14035             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14036                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14037                 goto nla_put_failure; } while (0)
14038
14039         SET_FTM(success_num, SUCCESS_NUM, u32);
14040         SET_FTM(partial_num, PARTIAL_NUM, u32);
14041         SET_FTM(failed_num, FAILED_NUM, u32);
14042         SET_FTM(asap_num, ASAP_NUM, u32);
14043         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14044         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14045         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14046         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14047         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14048 #undef SET_FTM
14049
14050         nla_nest_end(msg, ftm_stats_attr);
14051
14052         genlmsg_end(msg, hdr);
14053         return genlmsg_reply(msg, info);
14054
14055 nla_put_failure:
14056         nlmsg_free(msg);
14057         return -ENOBUFS;
14058 }
14059
14060 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14061 {
14062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14063         struct cfg80211_update_owe_info owe_info;
14064         struct net_device *dev = info->user_ptr[1];
14065
14066         if (!rdev->ops->update_owe_info)
14067                 return -EOPNOTSUPP;
14068
14069         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14070             !info->attrs[NL80211_ATTR_MAC])
14071                 return -EINVAL;
14072
14073         memset(&owe_info, 0, sizeof(owe_info));
14074         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14075         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14076
14077         if (info->attrs[NL80211_ATTR_IE]) {
14078                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14079                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14080         }
14081
14082         return rdev_update_owe_info(rdev, dev, &owe_info);
14083 }
14084
14085 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14086 {
14087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14088         struct net_device *dev = info->user_ptr[1];
14089         struct wireless_dev *wdev = dev->ieee80211_ptr;
14090         struct station_info sinfo = {};
14091         const u8 *buf;
14092         size_t len;
14093         u8 *dest;
14094         int err;
14095
14096         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14097                 return -EOPNOTSUPP;
14098
14099         if (!info->attrs[NL80211_ATTR_MAC] ||
14100             !info->attrs[NL80211_ATTR_FRAME]) {
14101                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14102                 return -EINVAL;
14103         }
14104
14105         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14106                 return -EOPNOTSUPP;
14107
14108         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14109         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14110         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14111
14112         if (len < sizeof(struct ethhdr))
14113                 return -EINVAL;
14114
14115         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14116             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14117                 return -EINVAL;
14118
14119         err = rdev_get_station(rdev, dev, dest, &sinfo);
14120         if (err)
14121                 return err;
14122
14123         cfg80211_sinfo_release_content(&sinfo);
14124
14125         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14126 }
14127
14128 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14129                           struct nlattr *attrs[], struct net_device *dev,
14130                           struct cfg80211_tid_cfg *tid_conf,
14131                           struct genl_info *info, const u8 *peer)
14132 {
14133         struct netlink_ext_ack *extack = info->extack;
14134         u64 mask;
14135         int err;
14136
14137         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14138                 return -EINVAL;
14139
14140         tid_conf->config_override =
14141                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14142         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14143
14144         if (tid_conf->config_override) {
14145                 if (rdev->ops->reset_tid_config) {
14146                         err = rdev_reset_tid_config(rdev, dev, peer,
14147                                                     tid_conf->tids);
14148                         if (err)
14149                                 return err;
14150                 } else {
14151                         return -EINVAL;
14152                 }
14153         }
14154
14155         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14156                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14157                 tid_conf->noack =
14158                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14159         }
14160
14161         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14162                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14163                 tid_conf->retry_short =
14164                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14165
14166                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14167                         return -EINVAL;
14168         }
14169
14170         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14171                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14172                 tid_conf->retry_long =
14173                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14174
14175                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14176                         return -EINVAL;
14177         }
14178
14179         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14180                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14181                 tid_conf->ampdu =
14182                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14183         }
14184
14185         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14186                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14187                 tid_conf->rtscts =
14188                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14189         }
14190
14191         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14192                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14193                 tid_conf->amsdu =
14194                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14195         }
14196
14197         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14198                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14199
14200                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14201
14202                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14203                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14204                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14205                                                     &tid_conf->txrate_mask);
14206                         if (err)
14207                                 return err;
14208
14209                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14210                 }
14211                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14212         }
14213
14214         if (peer)
14215                 mask = rdev->wiphy.tid_config_support.peer;
14216         else
14217                 mask = rdev->wiphy.tid_config_support.vif;
14218
14219         if (tid_conf->mask & ~mask) {
14220                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14221                 return -ENOTSUPP;
14222         }
14223
14224         return 0;
14225 }
14226
14227 static int nl80211_set_tid_config(struct sk_buff *skb,
14228                                   struct genl_info *info)
14229 {
14230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14231         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14232         struct net_device *dev = info->user_ptr[1];
14233         struct cfg80211_tid_config *tid_config;
14234         struct nlattr *tid;
14235         int conf_idx = 0, rem_conf;
14236         int ret = -EINVAL;
14237         u32 num_conf = 0;
14238
14239         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14240                 return -EINVAL;
14241
14242         if (!rdev->ops->set_tid_config)
14243                 return -EOPNOTSUPP;
14244
14245         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14246                             rem_conf)
14247                 num_conf++;
14248
14249         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14250                              GFP_KERNEL);
14251         if (!tid_config)
14252                 return -ENOMEM;
14253
14254         tid_config->n_tid_conf = num_conf;
14255
14256         if (info->attrs[NL80211_ATTR_MAC])
14257                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14258
14259         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14260                             rem_conf) {
14261                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14262                                        tid, NULL, NULL);
14263
14264                 if (ret)
14265                         goto bad_tid_conf;
14266
14267                 ret = parse_tid_conf(rdev, attrs, dev,
14268                                      &tid_config->tid_conf[conf_idx],
14269                                      info, tid_config->peer);
14270                 if (ret)
14271                         goto bad_tid_conf;
14272
14273                 conf_idx++;
14274         }
14275
14276         ret = rdev_set_tid_config(rdev, dev, tid_config);
14277
14278 bad_tid_conf:
14279         kfree(tid_config);
14280         return ret;
14281 }
14282
14283 #define NL80211_FLAG_NEED_WIPHY         0x01
14284 #define NL80211_FLAG_NEED_NETDEV        0x02
14285 #define NL80211_FLAG_NEED_RTNL          0x04
14286 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14287 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14288                                          NL80211_FLAG_CHECK_NETDEV_UP)
14289 #define NL80211_FLAG_NEED_WDEV          0x10
14290 /* If a netdev is associated, it must be UP, P2P must be started */
14291 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14292                                          NL80211_FLAG_CHECK_NETDEV_UP)
14293 #define NL80211_FLAG_CLEAR_SKB          0x20
14294
14295 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14296                             struct genl_info *info)
14297 {
14298         struct cfg80211_registered_device *rdev;
14299         struct wireless_dev *wdev;
14300         struct net_device *dev;
14301         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14302
14303         if (rtnl)
14304                 rtnl_lock();
14305
14306         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14307                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14308                 if (IS_ERR(rdev)) {
14309                         if (rtnl)
14310                                 rtnl_unlock();
14311                         return PTR_ERR(rdev);
14312                 }
14313                 info->user_ptr[0] = rdev;
14314         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14315                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14316                 ASSERT_RTNL();
14317
14318                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14319                                                   info->attrs);
14320                 if (IS_ERR(wdev)) {
14321                         if (rtnl)
14322                                 rtnl_unlock();
14323                         return PTR_ERR(wdev);
14324                 }
14325
14326                 dev = wdev->netdev;
14327                 rdev = wiphy_to_rdev(wdev->wiphy);
14328
14329                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14330                         if (!dev) {
14331                                 if (rtnl)
14332                                         rtnl_unlock();
14333                                 return -EINVAL;
14334                         }
14335
14336                         info->user_ptr[1] = dev;
14337                 } else {
14338                         info->user_ptr[1] = wdev;
14339                 }
14340
14341                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14342                     !wdev_running(wdev)) {
14343                         if (rtnl)
14344                                 rtnl_unlock();
14345                         return -ENETDOWN;
14346                 }
14347
14348                 if (dev)
14349                         dev_hold(dev);
14350
14351                 info->user_ptr[0] = rdev;
14352         }
14353
14354         return 0;
14355 }
14356
14357 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14358                               struct genl_info *info)
14359 {
14360         if (info->user_ptr[1]) {
14361                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14362                         struct wireless_dev *wdev = info->user_ptr[1];
14363
14364                         if (wdev->netdev)
14365                                 dev_put(wdev->netdev);
14366                 } else {
14367                         dev_put(info->user_ptr[1]);
14368                 }
14369         }
14370
14371         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14372                 rtnl_unlock();
14373
14374         /* If needed, clear the netlink message payload from the SKB
14375          * as it might contain key data that shouldn't stick around on
14376          * the heap after the SKB is freed. The netlink message header
14377          * is still needed for further processing, so leave it intact.
14378          */
14379         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14380                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14381
14382                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14383         }
14384 }
14385
14386 static const struct genl_ops nl80211_ops[] = {
14387         {
14388                 .cmd = NL80211_CMD_GET_WIPHY,
14389                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14390                 .doit = nl80211_get_wiphy,
14391                 .dumpit = nl80211_dump_wiphy,
14392                 .done = nl80211_dump_wiphy_done,
14393                 /* can be retrieved by unprivileged users */
14394                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14395                                   NL80211_FLAG_NEED_RTNL,
14396         },
14397         {
14398                 .cmd = NL80211_CMD_SET_WIPHY,
14399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14400                 .doit = nl80211_set_wiphy,
14401                 .flags = GENL_UNS_ADMIN_PERM,
14402                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14403         },
14404         {
14405                 .cmd = NL80211_CMD_GET_INTERFACE,
14406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14407                 .doit = nl80211_get_interface,
14408                 .dumpit = nl80211_dump_interface,
14409                 /* can be retrieved by unprivileged users */
14410                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14411                                   NL80211_FLAG_NEED_RTNL,
14412         },
14413         {
14414                 .cmd = NL80211_CMD_SET_INTERFACE,
14415                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14416                 .doit = nl80211_set_interface,
14417                 .flags = GENL_UNS_ADMIN_PERM,
14418                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14419                                   NL80211_FLAG_NEED_RTNL,
14420         },
14421         {
14422                 .cmd = NL80211_CMD_NEW_INTERFACE,
14423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14424                 .doit = nl80211_new_interface,
14425                 .flags = GENL_UNS_ADMIN_PERM,
14426                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14427                                   NL80211_FLAG_NEED_RTNL,
14428         },
14429         {
14430                 .cmd = NL80211_CMD_DEL_INTERFACE,
14431                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14432                 .doit = nl80211_del_interface,
14433                 .flags = GENL_UNS_ADMIN_PERM,
14434                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14435                                   NL80211_FLAG_NEED_RTNL,
14436         },
14437         {
14438                 .cmd = NL80211_CMD_GET_KEY,
14439                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14440                 .doit = nl80211_get_key,
14441                 .flags = GENL_UNS_ADMIN_PERM,
14442                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14443                                   NL80211_FLAG_NEED_RTNL,
14444         },
14445         {
14446                 .cmd = NL80211_CMD_SET_KEY,
14447                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14448                 .doit = nl80211_set_key,
14449                 .flags = GENL_UNS_ADMIN_PERM,
14450                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14451                                   NL80211_FLAG_NEED_RTNL |
14452                                   NL80211_FLAG_CLEAR_SKB,
14453         },
14454         {
14455                 .cmd = NL80211_CMD_NEW_KEY,
14456                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14457                 .doit = nl80211_new_key,
14458                 .flags = GENL_UNS_ADMIN_PERM,
14459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14460                                   NL80211_FLAG_NEED_RTNL |
14461                                   NL80211_FLAG_CLEAR_SKB,
14462         },
14463         {
14464                 .cmd = NL80211_CMD_DEL_KEY,
14465                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14466                 .doit = nl80211_del_key,
14467                 .flags = GENL_UNS_ADMIN_PERM,
14468                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14469                                   NL80211_FLAG_NEED_RTNL,
14470         },
14471         {
14472                 .cmd = NL80211_CMD_SET_BEACON,
14473                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14474                 .flags = GENL_UNS_ADMIN_PERM,
14475                 .doit = nl80211_set_beacon,
14476                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14477                                   NL80211_FLAG_NEED_RTNL,
14478         },
14479         {
14480                 .cmd = NL80211_CMD_START_AP,
14481                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14482                 .flags = GENL_UNS_ADMIN_PERM,
14483                 .doit = nl80211_start_ap,
14484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14485                                   NL80211_FLAG_NEED_RTNL,
14486         },
14487         {
14488                 .cmd = NL80211_CMD_STOP_AP,
14489                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14490                 .flags = GENL_UNS_ADMIN_PERM,
14491                 .doit = nl80211_stop_ap,
14492                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14493                                   NL80211_FLAG_NEED_RTNL,
14494         },
14495         {
14496                 .cmd = NL80211_CMD_GET_STATION,
14497                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14498                 .doit = nl80211_get_station,
14499                 .dumpit = nl80211_dump_station,
14500                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14501                                   NL80211_FLAG_NEED_RTNL,
14502         },
14503         {
14504                 .cmd = NL80211_CMD_SET_STATION,
14505                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14506                 .doit = nl80211_set_station,
14507                 .flags = GENL_UNS_ADMIN_PERM,
14508                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14509                                   NL80211_FLAG_NEED_RTNL,
14510         },
14511         {
14512                 .cmd = NL80211_CMD_NEW_STATION,
14513                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14514                 .doit = nl80211_new_station,
14515                 .flags = GENL_UNS_ADMIN_PERM,
14516                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14517                                   NL80211_FLAG_NEED_RTNL,
14518         },
14519         {
14520                 .cmd = NL80211_CMD_DEL_STATION,
14521                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14522                 .doit = nl80211_del_station,
14523                 .flags = GENL_UNS_ADMIN_PERM,
14524                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14525                                   NL80211_FLAG_NEED_RTNL,
14526         },
14527         {
14528                 .cmd = NL80211_CMD_GET_MPATH,
14529                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14530                 .doit = nl80211_get_mpath,
14531                 .dumpit = nl80211_dump_mpath,
14532                 .flags = GENL_UNS_ADMIN_PERM,
14533                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14534                                   NL80211_FLAG_NEED_RTNL,
14535         },
14536         {
14537                 .cmd = NL80211_CMD_GET_MPP,
14538                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14539                 .doit = nl80211_get_mpp,
14540                 .dumpit = nl80211_dump_mpp,
14541                 .flags = GENL_UNS_ADMIN_PERM,
14542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14543                                   NL80211_FLAG_NEED_RTNL,
14544         },
14545         {
14546                 .cmd = NL80211_CMD_SET_MPATH,
14547                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14548                 .doit = nl80211_set_mpath,
14549                 .flags = GENL_UNS_ADMIN_PERM,
14550                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14551                                   NL80211_FLAG_NEED_RTNL,
14552         },
14553         {
14554                 .cmd = NL80211_CMD_NEW_MPATH,
14555                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14556                 .doit = nl80211_new_mpath,
14557                 .flags = GENL_UNS_ADMIN_PERM,
14558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14559                                   NL80211_FLAG_NEED_RTNL,
14560         },
14561         {
14562                 .cmd = NL80211_CMD_DEL_MPATH,
14563                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14564                 .doit = nl80211_del_mpath,
14565                 .flags = GENL_UNS_ADMIN_PERM,
14566                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14567                                   NL80211_FLAG_NEED_RTNL,
14568         },
14569         {
14570                 .cmd = NL80211_CMD_SET_BSS,
14571                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14572                 .doit = nl80211_set_bss,
14573                 .flags = GENL_UNS_ADMIN_PERM,
14574                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14575                                   NL80211_FLAG_NEED_RTNL,
14576         },
14577         {
14578                 .cmd = NL80211_CMD_GET_REG,
14579                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14580                 .doit = nl80211_get_reg_do,
14581                 .dumpit = nl80211_get_reg_dump,
14582                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14583                 /* can be retrieved by unprivileged users */
14584         },
14585 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14586         {
14587                 .cmd = NL80211_CMD_SET_REG,
14588                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14589                 .doit = nl80211_set_reg,
14590                 .flags = GENL_ADMIN_PERM,
14591                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14592         },
14593 #endif
14594         {
14595                 .cmd = NL80211_CMD_REQ_SET_REG,
14596                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14597                 .doit = nl80211_req_set_reg,
14598                 .flags = GENL_ADMIN_PERM,
14599         },
14600         {
14601                 .cmd = NL80211_CMD_RELOAD_REGDB,
14602                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14603                 .doit = nl80211_reload_regdb,
14604                 .flags = GENL_ADMIN_PERM,
14605         },
14606         {
14607                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14608                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14609                 .doit = nl80211_get_mesh_config,
14610                 /* can be retrieved by unprivileged users */
14611                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14612                                   NL80211_FLAG_NEED_RTNL,
14613         },
14614         {
14615                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14616                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14617                 .doit = nl80211_update_mesh_config,
14618                 .flags = GENL_UNS_ADMIN_PERM,
14619                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14620                                   NL80211_FLAG_NEED_RTNL,
14621         },
14622         {
14623                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14624                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14625                 .doit = nl80211_trigger_scan,
14626                 .flags = GENL_UNS_ADMIN_PERM,
14627                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14628                                   NL80211_FLAG_NEED_RTNL,
14629         },
14630         {
14631                 .cmd = NL80211_CMD_ABORT_SCAN,
14632                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14633                 .doit = nl80211_abort_scan,
14634                 .flags = GENL_UNS_ADMIN_PERM,
14635                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14636                                   NL80211_FLAG_NEED_RTNL,
14637         },
14638         {
14639                 .cmd = NL80211_CMD_GET_SCAN,
14640                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14641                 .dumpit = nl80211_dump_scan,
14642         },
14643         {
14644                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14645                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14646                 .doit = nl80211_start_sched_scan,
14647                 .flags = GENL_UNS_ADMIN_PERM,
14648                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14649                                   NL80211_FLAG_NEED_RTNL,
14650         },
14651         {
14652                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14653                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14654                 .doit = nl80211_stop_sched_scan,
14655                 .flags = GENL_UNS_ADMIN_PERM,
14656                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14657                                   NL80211_FLAG_NEED_RTNL,
14658         },
14659         {
14660                 .cmd = NL80211_CMD_AUTHENTICATE,
14661                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14662                 .doit = nl80211_authenticate,
14663                 .flags = GENL_UNS_ADMIN_PERM,
14664                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14665                                   NL80211_FLAG_NEED_RTNL |
14666                                   NL80211_FLAG_CLEAR_SKB,
14667         },
14668         {
14669                 .cmd = NL80211_CMD_ASSOCIATE,
14670                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14671                 .doit = nl80211_associate,
14672                 .flags = GENL_UNS_ADMIN_PERM,
14673                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14674                                   NL80211_FLAG_NEED_RTNL |
14675                                   NL80211_FLAG_CLEAR_SKB,
14676         },
14677         {
14678                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14679                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14680                 .doit = nl80211_deauthenticate,
14681                 .flags = GENL_UNS_ADMIN_PERM,
14682                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14683                                   NL80211_FLAG_NEED_RTNL,
14684         },
14685         {
14686                 .cmd = NL80211_CMD_DISASSOCIATE,
14687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14688                 .doit = nl80211_disassociate,
14689                 .flags = GENL_UNS_ADMIN_PERM,
14690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14691                                   NL80211_FLAG_NEED_RTNL,
14692         },
14693         {
14694                 .cmd = NL80211_CMD_JOIN_IBSS,
14695                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14696                 .doit = nl80211_join_ibss,
14697                 .flags = GENL_UNS_ADMIN_PERM,
14698                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14699                                   NL80211_FLAG_NEED_RTNL,
14700         },
14701         {
14702                 .cmd = NL80211_CMD_LEAVE_IBSS,
14703                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14704                 .doit = nl80211_leave_ibss,
14705                 .flags = GENL_UNS_ADMIN_PERM,
14706                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14707                                   NL80211_FLAG_NEED_RTNL,
14708         },
14709 #ifdef CONFIG_NL80211_TESTMODE
14710         {
14711                 .cmd = NL80211_CMD_TESTMODE,
14712                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14713                 .doit = nl80211_testmode_do,
14714                 .dumpit = nl80211_testmode_dump,
14715                 .flags = GENL_UNS_ADMIN_PERM,
14716                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14717                                   NL80211_FLAG_NEED_RTNL,
14718         },
14719 #endif
14720         {
14721                 .cmd = NL80211_CMD_CONNECT,
14722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14723                 .doit = nl80211_connect,
14724                 .flags = GENL_UNS_ADMIN_PERM,
14725                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14726                                   NL80211_FLAG_NEED_RTNL |
14727                                   NL80211_FLAG_CLEAR_SKB,
14728         },
14729         {
14730                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14731                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14732                 .doit = nl80211_update_connect_params,
14733                 .flags = GENL_ADMIN_PERM,
14734                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14735                                   NL80211_FLAG_NEED_RTNL |
14736                                   NL80211_FLAG_CLEAR_SKB,
14737         },
14738         {
14739                 .cmd = NL80211_CMD_DISCONNECT,
14740                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14741                 .doit = nl80211_disconnect,
14742                 .flags = GENL_UNS_ADMIN_PERM,
14743                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14744                                   NL80211_FLAG_NEED_RTNL,
14745         },
14746         {
14747                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14748                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14749                 .doit = nl80211_wiphy_netns,
14750                 .flags = GENL_UNS_ADMIN_PERM,
14751                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14752                                   NL80211_FLAG_NEED_RTNL,
14753         },
14754         {
14755                 .cmd = NL80211_CMD_GET_SURVEY,
14756                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14757                 .dumpit = nl80211_dump_survey,
14758         },
14759         {
14760                 .cmd = NL80211_CMD_SET_PMKSA,
14761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14762                 .doit = nl80211_setdel_pmksa,
14763                 .flags = GENL_UNS_ADMIN_PERM,
14764                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14765                                   NL80211_FLAG_NEED_RTNL |
14766                                   NL80211_FLAG_CLEAR_SKB,
14767         },
14768         {
14769                 .cmd = NL80211_CMD_DEL_PMKSA,
14770                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14771                 .doit = nl80211_setdel_pmksa,
14772                 .flags = GENL_UNS_ADMIN_PERM,
14773                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14774                                   NL80211_FLAG_NEED_RTNL,
14775         },
14776         {
14777                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14778                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14779                 .doit = nl80211_flush_pmksa,
14780                 .flags = GENL_UNS_ADMIN_PERM,
14781                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14782                                   NL80211_FLAG_NEED_RTNL,
14783         },
14784         {
14785                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14786                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14787                 .doit = nl80211_remain_on_channel,
14788                 .flags = GENL_UNS_ADMIN_PERM,
14789                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14790                                   NL80211_FLAG_NEED_RTNL,
14791         },
14792         {
14793                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14794                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14795                 .doit = nl80211_cancel_remain_on_channel,
14796                 .flags = GENL_UNS_ADMIN_PERM,
14797                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14798                                   NL80211_FLAG_NEED_RTNL,
14799         },
14800         {
14801                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14802                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14803                 .doit = nl80211_set_tx_bitrate_mask,
14804                 .flags = GENL_UNS_ADMIN_PERM,
14805                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14806                                   NL80211_FLAG_NEED_RTNL,
14807         },
14808         {
14809                 .cmd = NL80211_CMD_REGISTER_FRAME,
14810                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14811                 .doit = nl80211_register_mgmt,
14812                 .flags = GENL_UNS_ADMIN_PERM,
14813                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14814                                   NL80211_FLAG_NEED_RTNL,
14815         },
14816         {
14817                 .cmd = NL80211_CMD_FRAME,
14818                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14819                 .doit = nl80211_tx_mgmt,
14820                 .flags = GENL_UNS_ADMIN_PERM,
14821                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14822                                   NL80211_FLAG_NEED_RTNL,
14823         },
14824         {
14825                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14826                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14827                 .doit = nl80211_tx_mgmt_cancel_wait,
14828                 .flags = GENL_UNS_ADMIN_PERM,
14829                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14830                                   NL80211_FLAG_NEED_RTNL,
14831         },
14832         {
14833                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14834                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14835                 .doit = nl80211_set_power_save,
14836                 .flags = GENL_UNS_ADMIN_PERM,
14837                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14838                                   NL80211_FLAG_NEED_RTNL,
14839         },
14840         {
14841                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14842                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14843                 .doit = nl80211_get_power_save,
14844                 /* can be retrieved by unprivileged users */
14845                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14846                                   NL80211_FLAG_NEED_RTNL,
14847         },
14848         {
14849                 .cmd = NL80211_CMD_SET_CQM,
14850                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14851                 .doit = nl80211_set_cqm,
14852                 .flags = GENL_UNS_ADMIN_PERM,
14853                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14854                                   NL80211_FLAG_NEED_RTNL,
14855         },
14856         {
14857                 .cmd = NL80211_CMD_SET_CHANNEL,
14858                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14859                 .doit = nl80211_set_channel,
14860                 .flags = GENL_UNS_ADMIN_PERM,
14861                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14862                                   NL80211_FLAG_NEED_RTNL,
14863         },
14864         {
14865                 .cmd = NL80211_CMD_SET_WDS_PEER,
14866                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14867                 .doit = nl80211_set_wds_peer,
14868                 .flags = GENL_UNS_ADMIN_PERM,
14869                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14870                                   NL80211_FLAG_NEED_RTNL,
14871         },
14872         {
14873                 .cmd = NL80211_CMD_JOIN_MESH,
14874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14875                 .doit = nl80211_join_mesh,
14876                 .flags = GENL_UNS_ADMIN_PERM,
14877                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14878                                   NL80211_FLAG_NEED_RTNL,
14879         },
14880         {
14881                 .cmd = NL80211_CMD_LEAVE_MESH,
14882                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14883                 .doit = nl80211_leave_mesh,
14884                 .flags = GENL_UNS_ADMIN_PERM,
14885                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14886                                   NL80211_FLAG_NEED_RTNL,
14887         },
14888         {
14889                 .cmd = NL80211_CMD_JOIN_OCB,
14890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14891                 .doit = nl80211_join_ocb,
14892                 .flags = GENL_UNS_ADMIN_PERM,
14893                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14894                                   NL80211_FLAG_NEED_RTNL,
14895         },
14896         {
14897                 .cmd = NL80211_CMD_LEAVE_OCB,
14898                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14899                 .doit = nl80211_leave_ocb,
14900                 .flags = GENL_UNS_ADMIN_PERM,
14901                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14902                                   NL80211_FLAG_NEED_RTNL,
14903         },
14904 #ifdef CONFIG_PM
14905         {
14906                 .cmd = NL80211_CMD_GET_WOWLAN,
14907                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14908                 .doit = nl80211_get_wowlan,
14909                 /* can be retrieved by unprivileged users */
14910                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14911                                   NL80211_FLAG_NEED_RTNL,
14912         },
14913         {
14914                 .cmd = NL80211_CMD_SET_WOWLAN,
14915                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14916                 .doit = nl80211_set_wowlan,
14917                 .flags = GENL_UNS_ADMIN_PERM,
14918                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14919                                   NL80211_FLAG_NEED_RTNL,
14920         },
14921 #endif
14922         {
14923                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14924                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14925                 .doit = nl80211_set_rekey_data,
14926                 .flags = GENL_UNS_ADMIN_PERM,
14927                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14928                                   NL80211_FLAG_NEED_RTNL |
14929                                   NL80211_FLAG_CLEAR_SKB,
14930         },
14931         {
14932                 .cmd = NL80211_CMD_TDLS_MGMT,
14933                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14934                 .doit = nl80211_tdls_mgmt,
14935                 .flags = GENL_UNS_ADMIN_PERM,
14936                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14937                                   NL80211_FLAG_NEED_RTNL,
14938         },
14939         {
14940                 .cmd = NL80211_CMD_TDLS_OPER,
14941                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14942                 .doit = nl80211_tdls_oper,
14943                 .flags = GENL_UNS_ADMIN_PERM,
14944                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14945                                   NL80211_FLAG_NEED_RTNL,
14946         },
14947         {
14948                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14949                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14950                 .doit = nl80211_register_unexpected_frame,
14951                 .flags = GENL_UNS_ADMIN_PERM,
14952                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14953                                   NL80211_FLAG_NEED_RTNL,
14954         },
14955         {
14956                 .cmd = NL80211_CMD_PROBE_CLIENT,
14957                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14958                 .doit = nl80211_probe_client,
14959                 .flags = GENL_UNS_ADMIN_PERM,
14960                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14961                                   NL80211_FLAG_NEED_RTNL,
14962         },
14963         {
14964                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14965                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14966                 .doit = nl80211_register_beacons,
14967                 .flags = GENL_UNS_ADMIN_PERM,
14968                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14969                                   NL80211_FLAG_NEED_RTNL,
14970         },
14971         {
14972                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14973                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14974                 .doit = nl80211_set_noack_map,
14975                 .flags = GENL_UNS_ADMIN_PERM,
14976                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14977                                   NL80211_FLAG_NEED_RTNL,
14978         },
14979         {
14980                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14981                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14982                 .doit = nl80211_start_p2p_device,
14983                 .flags = GENL_UNS_ADMIN_PERM,
14984                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14985                                   NL80211_FLAG_NEED_RTNL,
14986         },
14987         {
14988                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14989                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14990                 .doit = nl80211_stop_p2p_device,
14991                 .flags = GENL_UNS_ADMIN_PERM,
14992                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14993                                   NL80211_FLAG_NEED_RTNL,
14994         },
14995         {
14996                 .cmd = NL80211_CMD_START_NAN,
14997                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14998                 .doit = nl80211_start_nan,
14999                 .flags = GENL_ADMIN_PERM,
15000                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15001                                   NL80211_FLAG_NEED_RTNL,
15002         },
15003         {
15004                 .cmd = NL80211_CMD_STOP_NAN,
15005                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15006                 .doit = nl80211_stop_nan,
15007                 .flags = GENL_ADMIN_PERM,
15008                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15009                                   NL80211_FLAG_NEED_RTNL,
15010         },
15011         {
15012                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15013                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15014                 .doit = nl80211_nan_add_func,
15015                 .flags = GENL_ADMIN_PERM,
15016                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15017                                   NL80211_FLAG_NEED_RTNL,
15018         },
15019         {
15020                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15021                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15022                 .doit = nl80211_nan_del_func,
15023                 .flags = GENL_ADMIN_PERM,
15024                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15025                                   NL80211_FLAG_NEED_RTNL,
15026         },
15027         {
15028                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15030                 .doit = nl80211_nan_change_config,
15031                 .flags = GENL_ADMIN_PERM,
15032                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15033                                   NL80211_FLAG_NEED_RTNL,
15034         },
15035         {
15036                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15037                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15038                 .doit = nl80211_set_mcast_rate,
15039                 .flags = GENL_UNS_ADMIN_PERM,
15040                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15041                                   NL80211_FLAG_NEED_RTNL,
15042         },
15043         {
15044                 .cmd = NL80211_CMD_SET_MAC_ACL,
15045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15046                 .doit = nl80211_set_mac_acl,
15047                 .flags = GENL_UNS_ADMIN_PERM,
15048                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15049                                   NL80211_FLAG_NEED_RTNL,
15050         },
15051         {
15052                 .cmd = NL80211_CMD_RADAR_DETECT,
15053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15054                 .doit = nl80211_start_radar_detection,
15055                 .flags = GENL_UNS_ADMIN_PERM,
15056                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15057                                   NL80211_FLAG_NEED_RTNL,
15058         },
15059         {
15060                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15062                 .doit = nl80211_get_protocol_features,
15063         },
15064         {
15065                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15066                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15067                 .doit = nl80211_update_ft_ies,
15068                 .flags = GENL_UNS_ADMIN_PERM,
15069                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15070                                   NL80211_FLAG_NEED_RTNL,
15071         },
15072         {
15073                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15075                 .doit = nl80211_crit_protocol_start,
15076                 .flags = GENL_UNS_ADMIN_PERM,
15077                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15078                                   NL80211_FLAG_NEED_RTNL,
15079         },
15080         {
15081                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15082                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15083                 .doit = nl80211_crit_protocol_stop,
15084                 .flags = GENL_UNS_ADMIN_PERM,
15085                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15086                                   NL80211_FLAG_NEED_RTNL,
15087         },
15088         {
15089                 .cmd = NL80211_CMD_GET_COALESCE,
15090                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15091                 .doit = nl80211_get_coalesce,
15092                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15093                                   NL80211_FLAG_NEED_RTNL,
15094         },
15095         {
15096                 .cmd = NL80211_CMD_SET_COALESCE,
15097                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15098                 .doit = nl80211_set_coalesce,
15099                 .flags = GENL_UNS_ADMIN_PERM,
15100                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15101                                   NL80211_FLAG_NEED_RTNL,
15102         },
15103         {
15104                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15105                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15106                 .doit = nl80211_channel_switch,
15107                 .flags = GENL_UNS_ADMIN_PERM,
15108                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15109                                   NL80211_FLAG_NEED_RTNL,
15110         },
15111         {
15112                 .cmd = NL80211_CMD_VENDOR,
15113                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15114                 .doit = nl80211_vendor_cmd,
15115                 .dumpit = nl80211_vendor_cmd_dump,
15116                 .flags = GENL_UNS_ADMIN_PERM,
15117                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15118                                   NL80211_FLAG_NEED_RTNL |
15119                                   NL80211_FLAG_CLEAR_SKB,
15120         },
15121         {
15122                 .cmd = NL80211_CMD_SET_QOS_MAP,
15123                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15124                 .doit = nl80211_set_qos_map,
15125                 .flags = GENL_UNS_ADMIN_PERM,
15126                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15127                                   NL80211_FLAG_NEED_RTNL,
15128         },
15129         {
15130                 .cmd = NL80211_CMD_ADD_TX_TS,
15131                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15132                 .doit = nl80211_add_tx_ts,
15133                 .flags = GENL_UNS_ADMIN_PERM,
15134                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15135                                   NL80211_FLAG_NEED_RTNL,
15136         },
15137         {
15138                 .cmd = NL80211_CMD_DEL_TX_TS,
15139                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15140                 .doit = nl80211_del_tx_ts,
15141                 .flags = GENL_UNS_ADMIN_PERM,
15142                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15143                                   NL80211_FLAG_NEED_RTNL,
15144         },
15145         {
15146                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15147                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15148                 .doit = nl80211_tdls_channel_switch,
15149                 .flags = GENL_UNS_ADMIN_PERM,
15150                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15151                                   NL80211_FLAG_NEED_RTNL,
15152         },
15153         {
15154                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15155                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15156                 .doit = nl80211_tdls_cancel_channel_switch,
15157                 .flags = GENL_UNS_ADMIN_PERM,
15158                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15159                                   NL80211_FLAG_NEED_RTNL,
15160         },
15161         {
15162                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15163                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15164                 .doit = nl80211_set_multicast_to_unicast,
15165                 .flags = GENL_UNS_ADMIN_PERM,
15166                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15167                                   NL80211_FLAG_NEED_RTNL,
15168         },
15169         {
15170                 .cmd = NL80211_CMD_SET_PMK,
15171                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15172                 .doit = nl80211_set_pmk,
15173                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15174                                   NL80211_FLAG_NEED_RTNL |
15175                                   NL80211_FLAG_CLEAR_SKB,
15176         },
15177         {
15178                 .cmd = NL80211_CMD_DEL_PMK,
15179                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15180                 .doit = nl80211_del_pmk,
15181                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15182                                   NL80211_FLAG_NEED_RTNL,
15183         },
15184         {
15185                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15186                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15187                 .doit = nl80211_external_auth,
15188                 .flags = GENL_ADMIN_PERM,
15189                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15190                                   NL80211_FLAG_NEED_RTNL,
15191         },
15192         {
15193                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15194                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15195                 .doit = nl80211_tx_control_port,
15196                 .flags = GENL_UNS_ADMIN_PERM,
15197                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15198                                   NL80211_FLAG_NEED_RTNL,
15199         },
15200         {
15201                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15202                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15203                 .doit = nl80211_get_ftm_responder_stats,
15204                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15205                                   NL80211_FLAG_NEED_RTNL,
15206         },
15207         {
15208                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15209                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15210                 .doit = nl80211_pmsr_start,
15211                 .flags = GENL_UNS_ADMIN_PERM,
15212                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15213                                   NL80211_FLAG_NEED_RTNL,
15214         },
15215         {
15216                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15217                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15218                 .doit = nl80211_notify_radar_detection,
15219                 .flags = GENL_UNS_ADMIN_PERM,
15220                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15221                                   NL80211_FLAG_NEED_RTNL,
15222         },
15223         {
15224                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15225                 .doit = nl80211_update_owe_info,
15226                 .flags = GENL_ADMIN_PERM,
15227                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15228                                   NL80211_FLAG_NEED_RTNL,
15229         },
15230         {
15231                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15232                 .doit = nl80211_probe_mesh_link,
15233                 .flags = GENL_UNS_ADMIN_PERM,
15234                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15235                                   NL80211_FLAG_NEED_RTNL,
15236         },
15237         {
15238                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15239                 .doit = nl80211_set_tid_config,
15240                 .flags = GENL_UNS_ADMIN_PERM,
15241                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15242                                   NL80211_FLAG_NEED_RTNL,
15243         },
15244 };
15245
15246 static struct genl_family nl80211_fam __ro_after_init = {
15247         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15248         .hdrsize = 0,                   /* no private header */
15249         .version = 1,                   /* no particular meaning now */
15250         .maxattr = NL80211_ATTR_MAX,
15251         .policy = nl80211_policy,
15252         .netnsok = true,
15253         .pre_doit = nl80211_pre_doit,
15254         .post_doit = nl80211_post_doit,
15255         .module = THIS_MODULE,
15256         .ops = nl80211_ops,
15257         .n_ops = ARRAY_SIZE(nl80211_ops),
15258         .mcgrps = nl80211_mcgrps,
15259         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15260         .parallel_ops = true,
15261 };
15262
15263 /* notification functions */
15264
15265 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15266                           enum nl80211_commands cmd)
15267 {
15268         struct sk_buff *msg;
15269         struct nl80211_dump_wiphy_state state = {};
15270
15271         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15272                 cmd != NL80211_CMD_DEL_WIPHY);
15273
15274         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15275         if (!msg)
15276                 return;
15277
15278         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15279                 nlmsg_free(msg);
15280                 return;
15281         }
15282
15283         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15284                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15285 }
15286
15287 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15288                                 struct wireless_dev *wdev,
15289                                 enum nl80211_commands cmd)
15290 {
15291         struct sk_buff *msg;
15292
15293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15294         if (!msg)
15295                 return;
15296
15297         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15298                 nlmsg_free(msg);
15299                 return;
15300         }
15301
15302         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15303                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15304 }
15305
15306 static int nl80211_add_scan_req(struct sk_buff *msg,
15307                                 struct cfg80211_registered_device *rdev)
15308 {
15309         struct cfg80211_scan_request *req = rdev->scan_req;
15310         struct nlattr *nest;
15311         int i;
15312
15313         if (WARN_ON(!req))
15314                 return 0;
15315
15316         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15317         if (!nest)
15318                 goto nla_put_failure;
15319         for (i = 0; i < req->n_ssids; i++) {
15320                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15321                         goto nla_put_failure;
15322         }
15323         nla_nest_end(msg, nest);
15324
15325         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15326                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15327                 if (!nest)
15328                         goto nla_put_failure;
15329                 for (i = 0; i < req->n_channels; i++) {
15330                         if (nla_put_u32(msg, i,
15331                                    ieee80211_channel_to_khz(req->channels[i])))
15332                                 goto nla_put_failure;
15333                 }
15334                 nla_nest_end(msg, nest);
15335         } else {
15336                 nest = nla_nest_start_noflag(msg,
15337                                              NL80211_ATTR_SCAN_FREQUENCIES);
15338                 if (!nest)
15339                         goto nla_put_failure;
15340                 for (i = 0; i < req->n_channels; i++) {
15341                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15342                                 goto nla_put_failure;
15343                 }
15344                 nla_nest_end(msg, nest);
15345         }
15346
15347         if (req->ie &&
15348             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15349                 goto nla_put_failure;
15350
15351         if (req->flags &&
15352             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15353                 goto nla_put_failure;
15354
15355         if (req->info.scan_start_tsf &&
15356             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15357                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15358              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15359                      req->info.tsf_bssid)))
15360                 goto nla_put_failure;
15361
15362         return 0;
15363  nla_put_failure:
15364         return -ENOBUFS;
15365 }
15366
15367 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15368                                  struct cfg80211_registered_device *rdev,
15369                                  struct wireless_dev *wdev,
15370                                  u32 portid, u32 seq, int flags,
15371                                  u32 cmd)
15372 {
15373         void *hdr;
15374
15375         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15376         if (!hdr)
15377                 return -1;
15378
15379         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15380             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15381                                          wdev->netdev->ifindex)) ||
15382             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15383                               NL80211_ATTR_PAD))
15384                 goto nla_put_failure;
15385
15386         /* ignore errors and send incomplete event anyway */
15387         nl80211_add_scan_req(msg, rdev);
15388
15389         genlmsg_end(msg, hdr);
15390         return 0;
15391
15392  nla_put_failure:
15393         genlmsg_cancel(msg, hdr);
15394         return -EMSGSIZE;
15395 }
15396
15397 static int
15398 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15399                             struct cfg80211_sched_scan_request *req, u32 cmd)
15400 {
15401         void *hdr;
15402
15403         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15404         if (!hdr)
15405                 return -1;
15406
15407         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15408                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15409             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15410             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15411                               NL80211_ATTR_PAD))
15412                 goto nla_put_failure;
15413
15414         genlmsg_end(msg, hdr);
15415         return 0;
15416
15417  nla_put_failure:
15418         genlmsg_cancel(msg, hdr);
15419         return -EMSGSIZE;
15420 }
15421
15422 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15423                              struct wireless_dev *wdev)
15424 {
15425         struct sk_buff *msg;
15426
15427         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15428         if (!msg)
15429                 return;
15430
15431         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15432                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15433                 nlmsg_free(msg);
15434                 return;
15435         }
15436
15437         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15438                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15439 }
15440
15441 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15442                                        struct wireless_dev *wdev, bool aborted)
15443 {
15444         struct sk_buff *msg;
15445
15446         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15447         if (!msg)
15448                 return NULL;
15449
15450         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15451                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15452                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15453                 nlmsg_free(msg);
15454                 return NULL;
15455         }
15456
15457         return msg;
15458 }
15459
15460 /* send message created by nl80211_build_scan_msg() */
15461 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15462                            struct sk_buff *msg)
15463 {
15464         if (!msg)
15465                 return;
15466
15467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15468                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15469 }
15470
15471 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15472 {
15473         struct sk_buff *msg;
15474
15475         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15476         if (!msg)
15477                 return;
15478
15479         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15480                 nlmsg_free(msg);
15481                 return;
15482         }
15483
15484         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15485                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15486 }
15487
15488 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15489                                           struct regulatory_request *request)
15490 {
15491         /* Userspace can always count this one always being set */
15492         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15493                 goto nla_put_failure;
15494
15495         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15496                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15497                                NL80211_REGDOM_TYPE_WORLD))
15498                         goto nla_put_failure;
15499         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15500                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15501                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15502                         goto nla_put_failure;
15503         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15504                    request->intersect) {
15505                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15506                                NL80211_REGDOM_TYPE_INTERSECTION))
15507                         goto nla_put_failure;
15508         } else {
15509                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15510                                NL80211_REGDOM_TYPE_COUNTRY) ||
15511                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15512                                    request->alpha2))
15513                         goto nla_put_failure;
15514         }
15515
15516         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15517                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15518
15519                 if (wiphy &&
15520                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15521                         goto nla_put_failure;
15522
15523                 if (wiphy &&
15524                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15525                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15526                         goto nla_put_failure;
15527         }
15528
15529         return true;
15530
15531 nla_put_failure:
15532         return false;
15533 }
15534
15535 /*
15536  * This can happen on global regulatory changes or device specific settings
15537  * based on custom regulatory domains.
15538  */
15539 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15540                                      struct regulatory_request *request)
15541 {
15542         struct sk_buff *msg;
15543         void *hdr;
15544
15545         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15546         if (!msg)
15547                 return;
15548
15549         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15550         if (!hdr)
15551                 goto nla_put_failure;
15552
15553         if (!nl80211_reg_change_event_fill(msg, request))
15554                 goto nla_put_failure;
15555
15556         genlmsg_end(msg, hdr);
15557
15558         rcu_read_lock();
15559         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15560                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15561         rcu_read_unlock();
15562
15563         return;
15564
15565 nla_put_failure:
15566         nlmsg_free(msg);
15567 }
15568
15569 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15570                                     struct net_device *netdev,
15571                                     const u8 *buf, size_t len,
15572                                     enum nl80211_commands cmd, gfp_t gfp,
15573                                     int uapsd_queues, const u8 *req_ies,
15574                                     size_t req_ies_len)
15575 {
15576         struct sk_buff *msg;
15577         void *hdr;
15578
15579         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15580         if (!msg)
15581                 return;
15582
15583         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15584         if (!hdr) {
15585                 nlmsg_free(msg);
15586                 return;
15587         }
15588
15589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15590             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15591             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15592             (req_ies &&
15593              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15594                 goto nla_put_failure;
15595
15596         if (uapsd_queues >= 0) {
15597                 struct nlattr *nla_wmm =
15598                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15599                 if (!nla_wmm)
15600                         goto nla_put_failure;
15601
15602                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15603                                uapsd_queues))
15604                         goto nla_put_failure;
15605
15606                 nla_nest_end(msg, nla_wmm);
15607         }
15608
15609         genlmsg_end(msg, hdr);
15610
15611         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15612                                 NL80211_MCGRP_MLME, gfp);
15613         return;
15614
15615  nla_put_failure:
15616         nlmsg_free(msg);
15617 }
15618
15619 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15620                           struct net_device *netdev, const u8 *buf,
15621                           size_t len, gfp_t gfp)
15622 {
15623         nl80211_send_mlme_event(rdev, netdev, buf, len,
15624                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15625 }
15626
15627 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15628                            struct net_device *netdev, const u8 *buf,
15629                            size_t len, gfp_t gfp, int uapsd_queues,
15630                            const u8 *req_ies, size_t req_ies_len)
15631 {
15632         nl80211_send_mlme_event(rdev, netdev, buf, len,
15633                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15634                                 req_ies, req_ies_len);
15635 }
15636
15637 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15638                          struct net_device *netdev, const u8 *buf,
15639                          size_t len, gfp_t gfp)
15640 {
15641         nl80211_send_mlme_event(rdev, netdev, buf, len,
15642                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15643 }
15644
15645 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15646                            struct net_device *netdev, const u8 *buf,
15647                            size_t len, gfp_t gfp)
15648 {
15649         nl80211_send_mlme_event(rdev, netdev, buf, len,
15650                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15651 }
15652
15653 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15654                                   size_t len)
15655 {
15656         struct wireless_dev *wdev = dev->ieee80211_ptr;
15657         struct wiphy *wiphy = wdev->wiphy;
15658         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15659         const struct ieee80211_mgmt *mgmt = (void *)buf;
15660         u32 cmd;
15661
15662         if (WARN_ON(len < 2))
15663                 return;
15664
15665         if (ieee80211_is_deauth(mgmt->frame_control)) {
15666                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15667         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15668                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15669         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15670                 if (wdev->unprot_beacon_reported &&
15671                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15672                         return;
15673                 cmd = NL80211_CMD_UNPROT_BEACON;
15674                 wdev->unprot_beacon_reported = jiffies;
15675         } else {
15676                 return;
15677         }
15678
15679         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15680         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15681                                 NULL, 0);
15682 }
15683 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15684
15685 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15686                                       struct net_device *netdev, int cmd,
15687                                       const u8 *addr, gfp_t gfp)
15688 {
15689         struct sk_buff *msg;
15690         void *hdr;
15691
15692         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15693         if (!msg)
15694                 return;
15695
15696         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15697         if (!hdr) {
15698                 nlmsg_free(msg);
15699                 return;
15700         }
15701
15702         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15703             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15704             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15705             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15706                 goto nla_put_failure;
15707
15708         genlmsg_end(msg, hdr);
15709
15710         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15711                                 NL80211_MCGRP_MLME, gfp);
15712         return;
15713
15714  nla_put_failure:
15715         nlmsg_free(msg);
15716 }
15717
15718 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15719                                struct net_device *netdev, const u8 *addr,
15720                                gfp_t gfp)
15721 {
15722         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15723                                   addr, gfp);
15724 }
15725
15726 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15727                                 struct net_device *netdev, const u8 *addr,
15728                                 gfp_t gfp)
15729 {
15730         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15731                                   addr, gfp);
15732 }
15733
15734 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15735                                  struct net_device *netdev,
15736                                  struct cfg80211_connect_resp_params *cr,
15737                                  gfp_t gfp)
15738 {
15739         struct sk_buff *msg;
15740         void *hdr;
15741
15742         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15743                         cr->fils.kek_len + cr->fils.pmk_len +
15744                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15745         if (!msg)
15746                 return;
15747
15748         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15749         if (!hdr) {
15750                 nlmsg_free(msg);
15751                 return;
15752         }
15753
15754         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15755             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15756             (cr->bssid &&
15757              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15758             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15759                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15760                         cr->status) ||
15761             (cr->status < 0 &&
15762              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15763               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15764                           cr->timeout_reason))) ||
15765             (cr->req_ie &&
15766              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15767             (cr->resp_ie &&
15768              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15769                      cr->resp_ie)) ||
15770             (cr->fils.update_erp_next_seq_num &&
15771              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15772                          cr->fils.erp_next_seq_num)) ||
15773             (cr->status == WLAN_STATUS_SUCCESS &&
15774              ((cr->fils.kek &&
15775                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15776                        cr->fils.kek)) ||
15777               (cr->fils.pmk &&
15778                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15779               (cr->fils.pmkid &&
15780                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15781                 goto nla_put_failure;
15782
15783         genlmsg_end(msg, hdr);
15784
15785         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15786                                 NL80211_MCGRP_MLME, gfp);
15787         return;
15788
15789  nla_put_failure:
15790         nlmsg_free(msg);
15791 }
15792
15793 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15794                          struct net_device *netdev,
15795                          struct cfg80211_roam_info *info, gfp_t gfp)
15796 {
15797         struct sk_buff *msg;
15798         void *hdr;
15799         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15800
15801         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15802                         info->fils.kek_len + info->fils.pmk_len +
15803                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15804         if (!msg)
15805                 return;
15806
15807         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15808         if (!hdr) {
15809                 nlmsg_free(msg);
15810                 return;
15811         }
15812
15813         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15814             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15815             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15816             (info->req_ie &&
15817              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15818                      info->req_ie)) ||
15819             (info->resp_ie &&
15820              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15821                      info->resp_ie)) ||
15822             (info->fils.update_erp_next_seq_num &&
15823              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15824                          info->fils.erp_next_seq_num)) ||
15825             (info->fils.kek &&
15826              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15827                      info->fils.kek)) ||
15828             (info->fils.pmk &&
15829              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15830             (info->fils.pmkid &&
15831              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15832                 goto nla_put_failure;
15833
15834         genlmsg_end(msg, hdr);
15835
15836         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15837                                 NL80211_MCGRP_MLME, gfp);
15838         return;
15839
15840  nla_put_failure:
15841         nlmsg_free(msg);
15842 }
15843
15844 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15845                                   struct net_device *netdev, const u8 *bssid)
15846 {
15847         struct sk_buff *msg;
15848         void *hdr;
15849
15850         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15851         if (!msg)
15852                 return;
15853
15854         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15855         if (!hdr) {
15856                 nlmsg_free(msg);
15857                 return;
15858         }
15859
15860         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15861             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15862             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15863                 goto nla_put_failure;
15864
15865         genlmsg_end(msg, hdr);
15866
15867         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15868                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15869         return;
15870
15871  nla_put_failure:
15872         nlmsg_free(msg);
15873 }
15874
15875 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15876                                struct net_device *netdev, u16 reason,
15877                                const u8 *ie, size_t ie_len, bool from_ap)
15878 {
15879         struct sk_buff *msg;
15880         void *hdr;
15881
15882         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15883         if (!msg)
15884                 return;
15885
15886         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15887         if (!hdr) {
15888                 nlmsg_free(msg);
15889                 return;
15890         }
15891
15892         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15893             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15894             (reason &&
15895              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15896             (from_ap &&
15897              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15898             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15899                 goto nla_put_failure;
15900
15901         genlmsg_end(msg, hdr);
15902
15903         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15904                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15905         return;
15906
15907  nla_put_failure:
15908         nlmsg_free(msg);
15909 }
15910
15911 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15912                              struct net_device *netdev, const u8 *bssid,
15913                              gfp_t gfp)
15914 {
15915         struct sk_buff *msg;
15916         void *hdr;
15917
15918         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15919         if (!msg)
15920                 return;
15921
15922         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15923         if (!hdr) {
15924                 nlmsg_free(msg);
15925                 return;
15926         }
15927
15928         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15929             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15930             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15931                 goto nla_put_failure;
15932
15933         genlmsg_end(msg, hdr);
15934
15935         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15936                                 NL80211_MCGRP_MLME, gfp);
15937         return;
15938
15939  nla_put_failure:
15940         nlmsg_free(msg);
15941 }
15942
15943 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15944                                         const u8 *ie, u8 ie_len,
15945                                         int sig_dbm, gfp_t gfp)
15946 {
15947         struct wireless_dev *wdev = dev->ieee80211_ptr;
15948         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15949         struct sk_buff *msg;
15950         void *hdr;
15951
15952         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15953                 return;
15954
15955         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15956
15957         msg = nlmsg_new(100 + ie_len, gfp);
15958         if (!msg)
15959                 return;
15960
15961         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15962         if (!hdr) {
15963                 nlmsg_free(msg);
15964                 return;
15965         }
15966
15967         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15968             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15969             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15970             (ie_len && ie &&
15971              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15972             (sig_dbm &&
15973              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15974                 goto nla_put_failure;
15975
15976         genlmsg_end(msg, hdr);
15977
15978         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15979                                 NL80211_MCGRP_MLME, gfp);
15980         return;
15981
15982  nla_put_failure:
15983         nlmsg_free(msg);
15984 }
15985 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15986
15987 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15988                                  struct net_device *netdev, const u8 *addr,
15989                                  enum nl80211_key_type key_type, int key_id,
15990                                  const u8 *tsc, gfp_t gfp)
15991 {
15992         struct sk_buff *msg;
15993         void *hdr;
15994
15995         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15996         if (!msg)
15997                 return;
15998
15999         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16000         if (!hdr) {
16001                 nlmsg_free(msg);
16002                 return;
16003         }
16004
16005         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16006             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16007             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16008             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16009             (key_id != -1 &&
16010              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16011             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16012                 goto nla_put_failure;
16013
16014         genlmsg_end(msg, hdr);
16015
16016         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16017                                 NL80211_MCGRP_MLME, gfp);
16018         return;
16019
16020  nla_put_failure:
16021         nlmsg_free(msg);
16022 }
16023
16024 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16025                                     struct ieee80211_channel *channel_before,
16026                                     struct ieee80211_channel *channel_after)
16027 {
16028         struct sk_buff *msg;
16029         void *hdr;
16030         struct nlattr *nl_freq;
16031
16032         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16033         if (!msg)
16034                 return;
16035
16036         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16037         if (!hdr) {
16038                 nlmsg_free(msg);
16039                 return;
16040         }
16041
16042         /*
16043          * Since we are applying the beacon hint to a wiphy we know its
16044          * wiphy_idx is valid
16045          */
16046         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16047                 goto nla_put_failure;
16048
16049         /* Before */
16050         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16051         if (!nl_freq)
16052                 goto nla_put_failure;
16053
16054         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16055                 goto nla_put_failure;
16056         nla_nest_end(msg, nl_freq);
16057
16058         /* After */
16059         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16060         if (!nl_freq)
16061                 goto nla_put_failure;
16062
16063         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16064                 goto nla_put_failure;
16065         nla_nest_end(msg, nl_freq);
16066
16067         genlmsg_end(msg, hdr);
16068
16069         rcu_read_lock();
16070         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16071                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16072         rcu_read_unlock();
16073
16074         return;
16075
16076 nla_put_failure:
16077         nlmsg_free(msg);
16078 }
16079
16080 static void nl80211_send_remain_on_chan_event(
16081         int cmd, struct cfg80211_registered_device *rdev,
16082         struct wireless_dev *wdev, u64 cookie,
16083         struct ieee80211_channel *chan,
16084         unsigned int duration, gfp_t gfp)
16085 {
16086         struct sk_buff *msg;
16087         void *hdr;
16088
16089         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16090         if (!msg)
16091                 return;
16092
16093         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16094         if (!hdr) {
16095                 nlmsg_free(msg);
16096                 return;
16097         }
16098
16099         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16100             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16101                                          wdev->netdev->ifindex)) ||
16102             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16103                               NL80211_ATTR_PAD) ||
16104             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16105             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16106                         NL80211_CHAN_NO_HT) ||
16107             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16108                               NL80211_ATTR_PAD))
16109                 goto nla_put_failure;
16110
16111         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16112             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16113                 goto nla_put_failure;
16114
16115         genlmsg_end(msg, hdr);
16116
16117         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16118                                 NL80211_MCGRP_MLME, gfp);
16119         return;
16120
16121  nla_put_failure:
16122         nlmsg_free(msg);
16123 }
16124
16125 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16126                                struct ieee80211_channel *chan,
16127                                unsigned int duration, gfp_t gfp)
16128 {
16129         struct wiphy *wiphy = wdev->wiphy;
16130         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16131
16132         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16133         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16134                                           rdev, wdev, cookie, chan,
16135                                           duration, gfp);
16136 }
16137 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16138
16139 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16140                                         struct ieee80211_channel *chan,
16141                                         gfp_t gfp)
16142 {
16143         struct wiphy *wiphy = wdev->wiphy;
16144         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16145
16146         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16147         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16148                                           rdev, wdev, cookie, chan, 0, gfp);
16149 }
16150 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16151
16152 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16153                                         struct ieee80211_channel *chan,
16154                                         gfp_t gfp)
16155 {
16156         struct wiphy *wiphy = wdev->wiphy;
16157         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16158
16159         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16160         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16161                                           rdev, wdev, cookie, chan, 0, gfp);
16162 }
16163 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16164
16165 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16166                       struct station_info *sinfo, gfp_t gfp)
16167 {
16168         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16169         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16170         struct sk_buff *msg;
16171
16172         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16173
16174         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16175         if (!msg)
16176                 return;
16177
16178         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16179                                  rdev, dev, mac_addr, sinfo) < 0) {
16180                 nlmsg_free(msg);
16181                 return;
16182         }
16183
16184         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16185                                 NL80211_MCGRP_MLME, gfp);
16186 }
16187 EXPORT_SYMBOL(cfg80211_new_sta);
16188
16189 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16190                             struct station_info *sinfo, gfp_t gfp)
16191 {
16192         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16193         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16194         struct sk_buff *msg;
16195         struct station_info empty_sinfo = {};
16196
16197         if (!sinfo)
16198                 sinfo = &empty_sinfo;
16199
16200         trace_cfg80211_del_sta(dev, mac_addr);
16201
16202         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16203         if (!msg) {
16204                 cfg80211_sinfo_release_content(sinfo);
16205                 return;
16206         }
16207
16208         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16209                                  rdev, dev, mac_addr, sinfo) < 0) {
16210                 nlmsg_free(msg);
16211                 return;
16212         }
16213
16214         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16215                                 NL80211_MCGRP_MLME, gfp);
16216 }
16217 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16218
16219 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16220                           enum nl80211_connect_failed_reason reason,
16221                           gfp_t gfp)
16222 {
16223         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16224         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16225         struct sk_buff *msg;
16226         void *hdr;
16227
16228         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16229         if (!msg)
16230                 return;
16231
16232         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16233         if (!hdr) {
16234                 nlmsg_free(msg);
16235                 return;
16236         }
16237
16238         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16239             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16240             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16241                 goto nla_put_failure;
16242
16243         genlmsg_end(msg, hdr);
16244
16245         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16246                                 NL80211_MCGRP_MLME, gfp);
16247         return;
16248
16249  nla_put_failure:
16250         nlmsg_free(msg);
16251 }
16252 EXPORT_SYMBOL(cfg80211_conn_failed);
16253
16254 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16255                                        const u8 *addr, gfp_t gfp)
16256 {
16257         struct wireless_dev *wdev = dev->ieee80211_ptr;
16258         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16259         struct sk_buff *msg;
16260         void *hdr;
16261         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16262
16263         if (!nlportid)
16264                 return false;
16265
16266         msg = nlmsg_new(100, gfp);
16267         if (!msg)
16268                 return true;
16269
16270         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16271         if (!hdr) {
16272                 nlmsg_free(msg);
16273                 return true;
16274         }
16275
16276         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16277             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16278             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16279                 goto nla_put_failure;
16280
16281         genlmsg_end(msg, hdr);
16282         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16283         return true;
16284
16285  nla_put_failure:
16286         nlmsg_free(msg);
16287         return true;
16288 }
16289
16290 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16291                                 const u8 *addr, gfp_t gfp)
16292 {
16293         struct wireless_dev *wdev = dev->ieee80211_ptr;
16294         bool ret;
16295
16296         trace_cfg80211_rx_spurious_frame(dev, addr);
16297
16298         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16299                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16300                 trace_cfg80211_return_bool(false);
16301                 return false;
16302         }
16303         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16304                                          addr, gfp);
16305         trace_cfg80211_return_bool(ret);
16306         return ret;
16307 }
16308 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16309
16310 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16311                                         const u8 *addr, gfp_t gfp)
16312 {
16313         struct wireless_dev *wdev = dev->ieee80211_ptr;
16314         bool ret;
16315
16316         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16317
16318         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16319                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16320                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16321                 trace_cfg80211_return_bool(false);
16322                 return false;
16323         }
16324         ret = __nl80211_unexpected_frame(dev,
16325                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16326                                          addr, gfp);
16327         trace_cfg80211_return_bool(ret);
16328         return ret;
16329 }
16330 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16331
16332 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16333                       struct wireless_dev *wdev, u32 nlportid,
16334                       int freq, int sig_dbm,
16335                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16336 {
16337         struct net_device *netdev = wdev->netdev;
16338         struct sk_buff *msg;
16339         void *hdr;
16340
16341         msg = nlmsg_new(100 + len, gfp);
16342         if (!msg)
16343                 return -ENOMEM;
16344
16345         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16346         if (!hdr) {
16347                 nlmsg_free(msg);
16348                 return -ENOMEM;
16349         }
16350
16351         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16352             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16353                                         netdev->ifindex)) ||
16354             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16355                               NL80211_ATTR_PAD) ||
16356             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16357             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16358             (sig_dbm &&
16359              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16360             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16361             (flags &&
16362              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16363                 goto nla_put_failure;
16364
16365         genlmsg_end(msg, hdr);
16366
16367         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16368
16369  nla_put_failure:
16370         nlmsg_free(msg);
16371         return -ENOBUFS;
16372 }
16373
16374 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16375                                     const u8 *buf, size_t len, bool ack,
16376                                     gfp_t gfp, enum nl80211_commands command)
16377 {
16378         struct wiphy *wiphy = wdev->wiphy;
16379         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16380         struct net_device *netdev = wdev->netdev;
16381         struct sk_buff *msg;
16382         void *hdr;
16383
16384         if (command == NL80211_CMD_FRAME_TX_STATUS)
16385                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16386         else
16387                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16388
16389         msg = nlmsg_new(100 + len, gfp);
16390         if (!msg)
16391                 return;
16392
16393         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16394         if (!hdr) {
16395                 nlmsg_free(msg);
16396                 return;
16397         }
16398
16399         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16400             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16401                                    netdev->ifindex)) ||
16402             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16403                               NL80211_ATTR_PAD) ||
16404             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16405             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16406                               NL80211_ATTR_PAD) ||
16407             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16408                 goto nla_put_failure;
16409
16410         genlmsg_end(msg, hdr);
16411
16412         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16413                                 NL80211_MCGRP_MLME, gfp);
16414         return;
16415
16416 nla_put_failure:
16417         nlmsg_free(msg);
16418 }
16419
16420 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16421                                      const u8 *buf, size_t len, bool ack,
16422                                      gfp_t gfp)
16423 {
16424         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16425                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16426 }
16427 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16428
16429 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16430                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16431 {
16432         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16433                                 NL80211_CMD_FRAME_TX_STATUS);
16434 }
16435 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16436
16437 static int __nl80211_rx_control_port(struct net_device *dev,
16438                                      struct sk_buff *skb,
16439                                      bool unencrypted, gfp_t gfp)
16440 {
16441         struct wireless_dev *wdev = dev->ieee80211_ptr;
16442         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16443         struct ethhdr *ehdr = eth_hdr(skb);
16444         const u8 *addr = ehdr->h_source;
16445         u16 proto = be16_to_cpu(skb->protocol);
16446         struct sk_buff *msg;
16447         void *hdr;
16448         struct nlattr *frame;
16449
16450         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16451
16452         if (!nlportid)
16453                 return -ENOENT;
16454
16455         msg = nlmsg_new(100 + skb->len, gfp);
16456         if (!msg)
16457                 return -ENOMEM;
16458
16459         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16460         if (!hdr) {
16461                 nlmsg_free(msg);
16462                 return -ENOBUFS;
16463         }
16464
16465         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16466             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16467             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16468                               NL80211_ATTR_PAD) ||
16469             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16470             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16471             (unencrypted && nla_put_flag(msg,
16472                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16473                 goto nla_put_failure;
16474
16475         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16476         if (!frame)
16477                 goto nla_put_failure;
16478
16479         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16480         genlmsg_end(msg, hdr);
16481
16482         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16483
16484  nla_put_failure:
16485         nlmsg_free(msg);
16486         return -ENOBUFS;
16487 }
16488
16489 bool cfg80211_rx_control_port(struct net_device *dev,
16490                               struct sk_buff *skb, bool unencrypted)
16491 {
16492         int ret;
16493
16494         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16495         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16496         trace_cfg80211_return_bool(ret == 0);
16497         return ret == 0;
16498 }
16499 EXPORT_SYMBOL(cfg80211_rx_control_port);
16500
16501 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16502                                             const char *mac, gfp_t gfp)
16503 {
16504         struct wireless_dev *wdev = dev->ieee80211_ptr;
16505         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16506         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16507         void **cb;
16508
16509         if (!msg)
16510                 return NULL;
16511
16512         cb = (void **)msg->cb;
16513
16514         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16515         if (!cb[0]) {
16516                 nlmsg_free(msg);
16517                 return NULL;
16518         }
16519
16520         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16521             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16522                 goto nla_put_failure;
16523
16524         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16525                 goto nla_put_failure;
16526
16527         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16528         if (!cb[1])
16529                 goto nla_put_failure;
16530
16531         cb[2] = rdev;
16532
16533         return msg;
16534  nla_put_failure:
16535         nlmsg_free(msg);
16536         return NULL;
16537 }
16538
16539 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16540 {
16541         void **cb = (void **)msg->cb;
16542         struct cfg80211_registered_device *rdev = cb[2];
16543
16544         nla_nest_end(msg, cb[1]);
16545         genlmsg_end(msg, cb[0]);
16546
16547         memset(msg->cb, 0, sizeof(msg->cb));
16548
16549         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16550                                 NL80211_MCGRP_MLME, gfp);
16551 }
16552
16553 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16554                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16555                               s32 rssi_level, gfp_t gfp)
16556 {
16557         struct sk_buff *msg;
16558         struct wireless_dev *wdev = dev->ieee80211_ptr;
16559         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16560
16561         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16562
16563         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16564                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16565                 return;
16566
16567         if (wdev->cqm_config) {
16568                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16569
16570                 cfg80211_cqm_rssi_update(rdev, dev);
16571
16572                 if (rssi_level == 0)
16573                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16574         }
16575
16576         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16577         if (!msg)
16578                 return;
16579
16580         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16581                         rssi_event))
16582                 goto nla_put_failure;
16583
16584         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16585                                       rssi_level))
16586                 goto nla_put_failure;
16587
16588         cfg80211_send_cqm(msg, gfp);
16589
16590         return;
16591
16592  nla_put_failure:
16593         nlmsg_free(msg);
16594 }
16595 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16596
16597 void cfg80211_cqm_txe_notify(struct net_device *dev,
16598                              const u8 *peer, u32 num_packets,
16599                              u32 rate, u32 intvl, gfp_t gfp)
16600 {
16601         struct sk_buff *msg;
16602
16603         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16604         if (!msg)
16605                 return;
16606
16607         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16608                 goto nla_put_failure;
16609
16610         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16611                 goto nla_put_failure;
16612
16613         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16614                 goto nla_put_failure;
16615
16616         cfg80211_send_cqm(msg, gfp);
16617         return;
16618
16619  nla_put_failure:
16620         nlmsg_free(msg);
16621 }
16622 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16623
16624 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16625                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16626 {
16627         struct sk_buff *msg;
16628
16629         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16630
16631         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16632         if (!msg)
16633                 return;
16634
16635         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16636                 goto nla_put_failure;
16637
16638         cfg80211_send_cqm(msg, gfp);
16639         return;
16640
16641  nla_put_failure:
16642         nlmsg_free(msg);
16643 }
16644 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16645
16646 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16647 {
16648         struct sk_buff *msg;
16649
16650         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16651         if (!msg)
16652                 return;
16653
16654         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16655                 goto nla_put_failure;
16656
16657         cfg80211_send_cqm(msg, gfp);
16658         return;
16659
16660  nla_put_failure:
16661         nlmsg_free(msg);
16662 }
16663 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16664
16665 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16666                                      struct net_device *netdev, const u8 *bssid,
16667                                      const u8 *replay_ctr, gfp_t gfp)
16668 {
16669         struct sk_buff *msg;
16670         struct nlattr *rekey_attr;
16671         void *hdr;
16672
16673         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16674         if (!msg)
16675                 return;
16676
16677         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16678         if (!hdr) {
16679                 nlmsg_free(msg);
16680                 return;
16681         }
16682
16683         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16684             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16685             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16686                 goto nla_put_failure;
16687
16688         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16689         if (!rekey_attr)
16690                 goto nla_put_failure;
16691
16692         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16693                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16694                 goto nla_put_failure;
16695
16696         nla_nest_end(msg, rekey_attr);
16697
16698         genlmsg_end(msg, hdr);
16699
16700         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16701                                 NL80211_MCGRP_MLME, gfp);
16702         return;
16703
16704  nla_put_failure:
16705         nlmsg_free(msg);
16706 }
16707
16708 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16709                                const u8 *replay_ctr, gfp_t gfp)
16710 {
16711         struct wireless_dev *wdev = dev->ieee80211_ptr;
16712         struct wiphy *wiphy = wdev->wiphy;
16713         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16714
16715         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16716         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16717 }
16718 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16719
16720 static void
16721 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16722                                struct net_device *netdev, int index,
16723                                const u8 *bssid, bool preauth, gfp_t gfp)
16724 {
16725         struct sk_buff *msg;
16726         struct nlattr *attr;
16727         void *hdr;
16728
16729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16730         if (!msg)
16731                 return;
16732
16733         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16734         if (!hdr) {
16735                 nlmsg_free(msg);
16736                 return;
16737         }
16738
16739         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16740             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16741                 goto nla_put_failure;
16742
16743         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16744         if (!attr)
16745                 goto nla_put_failure;
16746
16747         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16748             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16749             (preauth &&
16750              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16751                 goto nla_put_failure;
16752
16753         nla_nest_end(msg, attr);
16754
16755         genlmsg_end(msg, hdr);
16756
16757         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16758                                 NL80211_MCGRP_MLME, gfp);
16759         return;
16760
16761  nla_put_failure:
16762         nlmsg_free(msg);
16763 }
16764
16765 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16766                                      const u8 *bssid, bool preauth, gfp_t gfp)
16767 {
16768         struct wireless_dev *wdev = dev->ieee80211_ptr;
16769         struct wiphy *wiphy = wdev->wiphy;
16770         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16771
16772         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16773         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16774 }
16775 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16776
16777 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16778                                      struct net_device *netdev,
16779                                      struct cfg80211_chan_def *chandef,
16780                                      gfp_t gfp,
16781                                      enum nl80211_commands notif,
16782                                      u8 count)
16783 {
16784         struct sk_buff *msg;
16785         void *hdr;
16786
16787         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16788         if (!msg)
16789                 return;
16790
16791         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16792         if (!hdr) {
16793                 nlmsg_free(msg);
16794                 return;
16795         }
16796
16797         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16798                 goto nla_put_failure;
16799
16800         if (nl80211_send_chandef(msg, chandef))
16801                 goto nla_put_failure;
16802
16803         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16804             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16805                         goto nla_put_failure;
16806
16807         genlmsg_end(msg, hdr);
16808
16809         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16810                                 NL80211_MCGRP_MLME, gfp);
16811         return;
16812
16813  nla_put_failure:
16814         nlmsg_free(msg);
16815 }
16816
16817 void cfg80211_ch_switch_notify(struct net_device *dev,
16818                                struct cfg80211_chan_def *chandef)
16819 {
16820         struct wireless_dev *wdev = dev->ieee80211_ptr;
16821         struct wiphy *wiphy = wdev->wiphy;
16822         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16823
16824         ASSERT_WDEV_LOCK(wdev);
16825
16826         trace_cfg80211_ch_switch_notify(dev, chandef);
16827
16828         wdev->chandef = *chandef;
16829         wdev->preset_chandef = *chandef;
16830
16831         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16832             !WARN_ON(!wdev->current_bss))
16833                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16834
16835         cfg80211_sched_dfs_chan_update(rdev);
16836
16837         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16838                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16839 }
16840 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16841
16842 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16843                                        struct cfg80211_chan_def *chandef,
16844                                        u8 count)
16845 {
16846         struct wireless_dev *wdev = dev->ieee80211_ptr;
16847         struct wiphy *wiphy = wdev->wiphy;
16848         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16849
16850         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16851
16852         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16853                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16854 }
16855 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16856
16857 void
16858 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16859                      const struct cfg80211_chan_def *chandef,
16860                      enum nl80211_radar_event event,
16861                      struct net_device *netdev, gfp_t gfp)
16862 {
16863         struct sk_buff *msg;
16864         void *hdr;
16865
16866         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16867         if (!msg)
16868                 return;
16869
16870         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16871         if (!hdr) {
16872                 nlmsg_free(msg);
16873                 return;
16874         }
16875
16876         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16877                 goto nla_put_failure;
16878
16879         /* NOP and radar events don't need a netdev parameter */
16880         if (netdev) {
16881                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16882
16883                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16884                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16885                                       NL80211_ATTR_PAD))
16886                         goto nla_put_failure;
16887         }
16888
16889         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16890                 goto nla_put_failure;
16891
16892         if (nl80211_send_chandef(msg, chandef))
16893                 goto nla_put_failure;
16894
16895         genlmsg_end(msg, hdr);
16896
16897         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16898                                 NL80211_MCGRP_MLME, gfp);
16899         return;
16900
16901  nla_put_failure:
16902         nlmsg_free(msg);
16903 }
16904
16905 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16906                                        struct sta_opmode_info *sta_opmode,
16907                                        gfp_t gfp)
16908 {
16909         struct sk_buff *msg;
16910         struct wireless_dev *wdev = dev->ieee80211_ptr;
16911         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16912         void *hdr;
16913
16914         if (WARN_ON(!mac))
16915                 return;
16916
16917         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16918         if (!msg)
16919                 return;
16920
16921         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16922         if (!hdr) {
16923                 nlmsg_free(msg);
16924                 return;
16925         }
16926
16927         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16928                 goto nla_put_failure;
16929
16930         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16931                 goto nla_put_failure;
16932
16933         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16934                 goto nla_put_failure;
16935
16936         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16937             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16938                 goto nla_put_failure;
16939
16940         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16941             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16942                 goto nla_put_failure;
16943
16944         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16945             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16946                 goto nla_put_failure;
16947
16948         genlmsg_end(msg, hdr);
16949
16950         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16951                                 NL80211_MCGRP_MLME, gfp);
16952
16953         return;
16954
16955 nla_put_failure:
16956         nlmsg_free(msg);
16957 }
16958 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16959
16960 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16961                            u64 cookie, bool acked, s32 ack_signal,
16962                            bool is_valid_ack_signal, gfp_t gfp)
16963 {
16964         struct wireless_dev *wdev = dev->ieee80211_ptr;
16965         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16966         struct sk_buff *msg;
16967         void *hdr;
16968
16969         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16970
16971         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16972
16973         if (!msg)
16974                 return;
16975
16976         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16977         if (!hdr) {
16978                 nlmsg_free(msg);
16979                 return;
16980         }
16981
16982         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16983             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16984             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16985             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16986                               NL80211_ATTR_PAD) ||
16987             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16988             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16989                                                 ack_signal)))
16990                 goto nla_put_failure;
16991
16992         genlmsg_end(msg, hdr);
16993
16994         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16995                                 NL80211_MCGRP_MLME, gfp);
16996         return;
16997
16998  nla_put_failure:
16999         nlmsg_free(msg);
17000 }
17001 EXPORT_SYMBOL(cfg80211_probe_status);
17002
17003 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17004                                      size_t len, int freq, int sig_dbm)
17005 {
17006         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17007         struct sk_buff *msg;
17008         void *hdr;
17009         struct cfg80211_beacon_registration *reg;
17010
17011         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17012
17013         spin_lock_bh(&rdev->beacon_registrations_lock);
17014         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17015                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17016                 if (!msg) {
17017                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17018                         return;
17019                 }
17020
17021                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17022                 if (!hdr)
17023                         goto nla_put_failure;
17024
17025                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17026                     (freq &&
17027                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17028                                   KHZ_TO_MHZ(freq)) ||
17029                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17030                                   freq % 1000))) ||
17031                     (sig_dbm &&
17032                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17033                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17034                         goto nla_put_failure;
17035
17036                 genlmsg_end(msg, hdr);
17037
17038                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17039         }
17040         spin_unlock_bh(&rdev->beacon_registrations_lock);
17041         return;
17042
17043  nla_put_failure:
17044         spin_unlock_bh(&rdev->beacon_registrations_lock);
17045         nlmsg_free(msg);
17046 }
17047 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17048
17049 #ifdef CONFIG_PM
17050 static int cfg80211_net_detect_results(struct sk_buff *msg,
17051                                        struct cfg80211_wowlan_wakeup *wakeup)
17052 {
17053         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17054         struct nlattr *nl_results, *nl_match, *nl_freqs;
17055         int i, j;
17056
17057         nl_results = nla_nest_start_noflag(msg,
17058                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17059         if (!nl_results)
17060                 return -EMSGSIZE;
17061
17062         for (i = 0; i < nd->n_matches; i++) {
17063                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17064
17065                 nl_match = nla_nest_start_noflag(msg, i);
17066                 if (!nl_match)
17067                         break;
17068
17069                 /* The SSID attribute is optional in nl80211, but for
17070                  * simplicity reasons it's always present in the
17071                  * cfg80211 structure.  If a driver can't pass the
17072                  * SSID, that needs to be changed.  A zero length SSID
17073                  * is still a valid SSID (wildcard), so it cannot be
17074                  * used for this purpose.
17075                  */
17076                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17077                             match->ssid.ssid)) {
17078                         nla_nest_cancel(msg, nl_match);
17079                         goto out;
17080                 }
17081
17082                 if (match->n_channels) {
17083                         nl_freqs = nla_nest_start_noflag(msg,
17084                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17085                         if (!nl_freqs) {
17086                                 nla_nest_cancel(msg, nl_match);
17087                                 goto out;
17088                         }
17089
17090                         for (j = 0; j < match->n_channels; j++) {
17091                                 if (nla_put_u32(msg, j, match->channels[j])) {
17092                                         nla_nest_cancel(msg, nl_freqs);
17093                                         nla_nest_cancel(msg, nl_match);
17094                                         goto out;
17095                                 }
17096                         }
17097
17098                         nla_nest_end(msg, nl_freqs);
17099                 }
17100
17101                 nla_nest_end(msg, nl_match);
17102         }
17103
17104 out:
17105         nla_nest_end(msg, nl_results);
17106         return 0;
17107 }
17108
17109 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17110                                    struct cfg80211_wowlan_wakeup *wakeup,
17111                                    gfp_t gfp)
17112 {
17113         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17114         struct sk_buff *msg;
17115         void *hdr;
17116         int size = 200;
17117
17118         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17119
17120         if (wakeup)
17121                 size += wakeup->packet_present_len;
17122
17123         msg = nlmsg_new(size, gfp);
17124         if (!msg)
17125                 return;
17126
17127         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17128         if (!hdr)
17129                 goto free_msg;
17130
17131         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17132             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17133                               NL80211_ATTR_PAD))
17134                 goto free_msg;
17135
17136         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17137                                         wdev->netdev->ifindex))
17138                 goto free_msg;
17139
17140         if (wakeup) {
17141                 struct nlattr *reasons;
17142
17143                 reasons = nla_nest_start_noflag(msg,
17144                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17145                 if (!reasons)
17146                         goto free_msg;
17147
17148                 if (wakeup->disconnect &&
17149                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17150                         goto free_msg;
17151                 if (wakeup->magic_pkt &&
17152                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17153                         goto free_msg;
17154                 if (wakeup->gtk_rekey_failure &&
17155                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17156                         goto free_msg;
17157                 if (wakeup->eap_identity_req &&
17158                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17159                         goto free_msg;
17160                 if (wakeup->four_way_handshake &&
17161                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17162                         goto free_msg;
17163                 if (wakeup->rfkill_release &&
17164                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17165                         goto free_msg;
17166
17167                 if (wakeup->pattern_idx >= 0 &&
17168                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17169                                 wakeup->pattern_idx))
17170                         goto free_msg;
17171
17172                 if (wakeup->tcp_match &&
17173                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17174                         goto free_msg;
17175
17176                 if (wakeup->tcp_connlost &&
17177                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17178                         goto free_msg;
17179
17180                 if (wakeup->tcp_nomoretokens &&
17181                     nla_put_flag(msg,
17182                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17183                         goto free_msg;
17184
17185                 if (wakeup->packet) {
17186                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17187                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17188
17189                         if (!wakeup->packet_80211) {
17190                                 pkt_attr =
17191                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17192                                 len_attr =
17193                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17194                         }
17195
17196                         if (wakeup->packet_len &&
17197                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17198                                 goto free_msg;
17199
17200                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17201                                     wakeup->packet))
17202                                 goto free_msg;
17203                 }
17204
17205                 if (wakeup->net_detect &&
17206                     cfg80211_net_detect_results(msg, wakeup))
17207                                 goto free_msg;
17208
17209                 nla_nest_end(msg, reasons);
17210         }
17211
17212         genlmsg_end(msg, hdr);
17213
17214         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17215                                 NL80211_MCGRP_MLME, gfp);
17216         return;
17217
17218  free_msg:
17219         nlmsg_free(msg);
17220 }
17221 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17222 #endif
17223
17224 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17225                                 enum nl80211_tdls_operation oper,
17226                                 u16 reason_code, gfp_t gfp)
17227 {
17228         struct wireless_dev *wdev = dev->ieee80211_ptr;
17229         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17230         struct sk_buff *msg;
17231         void *hdr;
17232
17233         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17234                                          reason_code);
17235
17236         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17237         if (!msg)
17238                 return;
17239
17240         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17241         if (!hdr) {
17242                 nlmsg_free(msg);
17243                 return;
17244         }
17245
17246         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17247             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17248             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17249             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17250             (reason_code > 0 &&
17251              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17252                 goto nla_put_failure;
17253
17254         genlmsg_end(msg, hdr);
17255
17256         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17257                                 NL80211_MCGRP_MLME, gfp);
17258         return;
17259
17260  nla_put_failure:
17261         nlmsg_free(msg);
17262 }
17263 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17264
17265 static int nl80211_netlink_notify(struct notifier_block * nb,
17266                                   unsigned long state,
17267                                   void *_notify)
17268 {
17269         struct netlink_notify *notify = _notify;
17270         struct cfg80211_registered_device *rdev;
17271         struct wireless_dev *wdev;
17272         struct cfg80211_beacon_registration *reg, *tmp;
17273
17274         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17275                 return NOTIFY_DONE;
17276
17277         rcu_read_lock();
17278
17279         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17280                 struct cfg80211_sched_scan_request *sched_scan_req;
17281
17282                 list_for_each_entry_rcu(sched_scan_req,
17283                                         &rdev->sched_scan_req_list,
17284                                         list) {
17285                         if (sched_scan_req->owner_nlportid == notify->portid) {
17286                                 sched_scan_req->nl_owner_dead = true;
17287                                 schedule_work(&rdev->sched_scan_stop_wk);
17288                         }
17289                 }
17290
17291                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17292                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17293
17294                         if (wdev->owner_nlportid == notify->portid) {
17295                                 wdev->nl_owner_dead = true;
17296                                 schedule_work(&rdev->destroy_work);
17297                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17298                                 schedule_work(&wdev->disconnect_wk);
17299                         }
17300
17301                         cfg80211_release_pmsr(wdev, notify->portid);
17302                 }
17303
17304                 spin_lock_bh(&rdev->beacon_registrations_lock);
17305                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17306                                          list) {
17307                         if (reg->nlportid == notify->portid) {
17308                                 list_del(&reg->list);
17309                                 kfree(reg);
17310                                 break;
17311                         }
17312                 }
17313                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17314         }
17315
17316         rcu_read_unlock();
17317
17318         /*
17319          * It is possible that the user space process that is controlling the
17320          * indoor setting disappeared, so notify the regulatory core.
17321          */
17322         regulatory_netlink_notify(notify->portid);
17323         return NOTIFY_OK;
17324 }
17325
17326 static struct notifier_block nl80211_netlink_notifier = {
17327         .notifier_call = nl80211_netlink_notify,
17328 };
17329
17330 void cfg80211_ft_event(struct net_device *netdev,
17331                        struct cfg80211_ft_event_params *ft_event)
17332 {
17333         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17334         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17335         struct sk_buff *msg;
17336         void *hdr;
17337
17338         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17339
17340         if (!ft_event->target_ap)
17341                 return;
17342
17343         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17344                         GFP_KERNEL);
17345         if (!msg)
17346                 return;
17347
17348         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17349         if (!hdr)
17350                 goto out;
17351
17352         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17353             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17354             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17355                 goto out;
17356
17357         if (ft_event->ies &&
17358             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17359                 goto out;
17360         if (ft_event->ric_ies &&
17361             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17362                     ft_event->ric_ies))
17363                 goto out;
17364
17365         genlmsg_end(msg, hdr);
17366
17367         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17368                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17369         return;
17370  out:
17371         nlmsg_free(msg);
17372 }
17373 EXPORT_SYMBOL(cfg80211_ft_event);
17374
17375 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17376 {
17377         struct cfg80211_registered_device *rdev;
17378         struct sk_buff *msg;
17379         void *hdr;
17380         u32 nlportid;
17381
17382         rdev = wiphy_to_rdev(wdev->wiphy);
17383         if (!rdev->crit_proto_nlportid)
17384                 return;
17385
17386         nlportid = rdev->crit_proto_nlportid;
17387         rdev->crit_proto_nlportid = 0;
17388
17389         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17390         if (!msg)
17391                 return;
17392
17393         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17394         if (!hdr)
17395                 goto nla_put_failure;
17396
17397         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17398             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17399                               NL80211_ATTR_PAD))
17400                 goto nla_put_failure;
17401
17402         genlmsg_end(msg, hdr);
17403
17404         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17405         return;
17406
17407  nla_put_failure:
17408         nlmsg_free(msg);
17409 }
17410 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17411
17412 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17413 {
17414         struct wiphy *wiphy = wdev->wiphy;
17415         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17416         struct sk_buff *msg;
17417         void *hdr;
17418
17419         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17420         if (!msg)
17421                 return;
17422
17423         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17424         if (!hdr)
17425                 goto out;
17426
17427         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17428             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17429             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17430                               NL80211_ATTR_PAD))
17431                 goto out;
17432
17433         genlmsg_end(msg, hdr);
17434
17435         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17436                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17437         return;
17438  out:
17439         nlmsg_free(msg);
17440 }
17441
17442 int cfg80211_external_auth_request(struct net_device *dev,
17443                                    struct cfg80211_external_auth_params *params,
17444                                    gfp_t gfp)
17445 {
17446         struct wireless_dev *wdev = dev->ieee80211_ptr;
17447         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17448         struct sk_buff *msg;
17449         void *hdr;
17450
17451         if (!wdev->conn_owner_nlportid)
17452                 return -EINVAL;
17453
17454         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17455         if (!msg)
17456                 return -ENOMEM;
17457
17458         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17459         if (!hdr)
17460                 goto nla_put_failure;
17461
17462         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17463             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17464             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17465             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17466                         params->action) ||
17467             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17468             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17469                     params->ssid.ssid))
17470                 goto nla_put_failure;
17471
17472         genlmsg_end(msg, hdr);
17473         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17474                         wdev->conn_owner_nlportid);
17475         return 0;
17476
17477  nla_put_failure:
17478         nlmsg_free(msg);
17479         return -ENOBUFS;
17480 }
17481 EXPORT_SYMBOL(cfg80211_external_auth_request);
17482
17483 void cfg80211_update_owe_info_event(struct net_device *netdev,
17484                                     struct cfg80211_update_owe_info *owe_info,
17485                                     gfp_t gfp)
17486 {
17487         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17488         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17489         struct sk_buff *msg;
17490         void *hdr;
17491
17492         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17493
17494         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17495         if (!msg)
17496                 return;
17497
17498         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17499         if (!hdr)
17500                 goto nla_put_failure;
17501
17502         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17503             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17504             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17505                 goto nla_put_failure;
17506
17507         if (!owe_info->ie_len ||
17508             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17509                 goto nla_put_failure;
17510
17511         genlmsg_end(msg, hdr);
17512
17513         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17514                                 NL80211_MCGRP_MLME, gfp);
17515         return;
17516
17517 nla_put_failure:
17518         genlmsg_cancel(msg, hdr);
17519         nlmsg_free(msg);
17520 }
17521 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17522
17523 /* initialisation/exit functions */
17524
17525 int __init nl80211_init(void)
17526 {
17527         int err;
17528
17529         err = genl_register_family(&nl80211_fam);
17530         if (err)
17531                 return err;
17532
17533         err = netlink_register_notifier(&nl80211_netlink_notifier);
17534         if (err)
17535                 goto err_out;
17536
17537         return 0;
17538  err_out:
17539         genl_unregister_family(&nl80211_fam);
17540         return err;
17541 }
17542
17543 void nl80211_exit(void)
17544 {
17545         netlink_unregister_notifier(&nl80211_netlink_notifier);
17546         genl_unregister_family(&nl80211_fam);
17547 }