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
 257 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 258         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 259         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 260                                         .len = U8_MAX },
 261         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 262                                              .len = U8_MAX },
 263 };
 264
 265 static const struct nla_policy
 266 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 267         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 268         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 269         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 270                 NLA_POLICY_MAX(NLA_U8, 15),
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 272         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 273                 NLA_POLICY_MAX(NLA_U8, 15),
 274         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 275                 NLA_POLICY_MAX(NLA_U8, 31),
 276         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 278         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 279         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 280         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 281 };
 282
 283 static const struct nla_policy
 284 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 285         [NL80211_PMSR_TYPE_FTM] =
 286                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 287 };
 288
 289 static const struct nla_policy
 290 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 291         [NL80211_PMSR_REQ_ATTR_DATA] =
 292                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 293         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 294 };
 295
 296 static const struct nla_policy
 297 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 298         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 299         /*
 300          * we could specify this again to be the top-level policy,
 301          * but that would open us up to recursion problems ...
 302          */
 303         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 304         [NL80211_PMSR_PEER_ATTR_REQ] =
 305                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 306         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 314         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 315         [NL80211_PMSR_ATTR_PEERS] =
 316                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 317 };
 318
 319 static const struct nla_policy
 320 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 321         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 324                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 325 };
 326
 327 static const struct nla_policy
 328 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 329         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 330         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 331         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 336         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 337         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 338         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 339         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 340         [NL80211_TID_CONFIG_ATTR_NOACK] =
 341                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 342         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 343         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 344         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 345                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 346         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 347                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 348 };
 349
 350 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 351         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 352         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 353         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 354                                       .len = 20-1 },
 355         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 356
 357         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 358         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 359         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 360                                                 NL80211_EDMG_CHANNELS_MIN,
 361                                                 NL80211_EDMG_CHANNELS_MAX),
 362         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 363                                                 NL80211_EDMG_BW_CONFIG_MIN,
 364                                                 NL80211_EDMG_BW_CONFIG_MAX),
 365
 366         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 367         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 368         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 369
 370         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 371         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 372         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 373         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 374         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 375         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 376
 377         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 378         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 379         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 380
 381         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 382         [NL80211_ATTR_PREV_BSSID] = {
 383                 .type = NLA_EXACT_LEN_WARN,
 384                 .len = ETH_ALEN
 385         },
 386
 387         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 388         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 389                                     .len = WLAN_MAX_KEY_LEN },
 390         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 391         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 392         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 394         [NL80211_ATTR_KEY_TYPE] =
 395                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 396
 397         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 398         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 399         [NL80211_ATTR_BEACON_HEAD] =
 400                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 401                                        IEEE80211_MAX_DATA_LEN),
 402         [NL80211_ATTR_BEACON_TAIL] =
 403                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 404                                        IEEE80211_MAX_DATA_LEN),
 405         [NL80211_ATTR_STA_AID] =
 406                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 407         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 408         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 409         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 410                                                .len = NL80211_MAX_SUPP_RATES },
 411         [NL80211_ATTR_STA_PLINK_ACTION] =
 412                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 413         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 414                 NLA_POLICY_RANGE(NLA_U8,
 415                                  NL80211_TX_POWER_AUTOMATIC,
 416                                  NL80211_TX_POWER_FIXED),
 417         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 418         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 419         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 420         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 421                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 422         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 423
 424         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 425         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 426
 427         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 428         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 429         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 430         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 431                                            .len = NL80211_MAX_SUPP_RATES },
 432         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 433
 434         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 435         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 436
 437         [NL80211_ATTR_HT_CAPABILITY] = {
 438                 .type = NLA_EXACT_LEN_WARN,
 439                 .len = NL80211_HT_CAPABILITY_LEN
 440         },
 441
 442         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 443         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 444                                                    validate_ie_attr,
 445                                                    IEEE80211_MAX_DATA_LEN),
 446         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 447         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 448
 449         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 450                                 .len = IEEE80211_MAX_SSID_LEN },
 451         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 452         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 453         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 454         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 455         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 456                                                   NL80211_MFP_NO,
 457                                                   NL80211_MFP_OPTIONAL),
 458         [NL80211_ATTR_STA_FLAGS2] = {
 459                 .len = sizeof(struct nl80211_sta_flag_update),
 460         },
 461         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 463         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 464         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 465         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 466         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 467         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 468         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 469         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 470         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 471         [NL80211_ATTR_PMKID] = {
 472                 .type = NLA_EXACT_LEN_WARN,
 473                 .len = WLAN_PMKID_LEN
 474         },
 475         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 476         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 477         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 478         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 479                                  .len = IEEE80211_MAX_DATA_LEN },
 480         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 481         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 482                                                    NL80211_PS_DISABLED,
 483                                                    NL80211_PS_ENABLED),
 484         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 485         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 486         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 487         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 488         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 489         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 490         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 491         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 492         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 493         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 494         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 495         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 496         [NL80211_ATTR_STA_PLINK_STATE] =
 497                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 498         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 499         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 500         [NL80211_ATTR_MESH_PEER_AID] =
 501                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 502         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 503         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 504         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 505         [NL80211_ATTR_HIDDEN_SSID] =
 506                 NLA_POLICY_RANGE(NLA_U32,
 507                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 508                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 509         [NL80211_ATTR_IE_PROBE_RESP] =
 510                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 511                                        IEEE80211_MAX_DATA_LEN),
 512         [NL80211_ATTR_IE_ASSOC_RESP] =
 513                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 514                                        IEEE80211_MAX_DATA_LEN),
 515         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 516         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 517         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 519         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 520         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 521         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 522         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 523         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 524         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 525         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 526                                       .len = IEEE80211_MAX_DATA_LEN },
 527         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 528         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 529         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 530                 .len = NL80211_HT_CAPABILITY_LEN
 531         },
 532         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 533         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 534         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 535         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 536         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 537         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 538         [NL80211_ATTR_VHT_CAPABILITY] = {
 539                 .type = NLA_EXACT_LEN_WARN,
 540                 .len = NL80211_VHT_CAPABILITY_LEN
 541         },
 542         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 543         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 544         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 545         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 546                 NLA_POLICY_RANGE(NLA_U32,
 547                                  NL80211_MESH_POWER_UNKNOWN + 1,
 548                                  NL80211_MESH_POWER_MAX),
 549         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 550         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 551         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 552         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 553         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 554         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 555         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 556                 .len = NL80211_VHT_CAPABILITY_LEN,
 557         },
 558         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 559         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 560                                   .len = IEEE80211_MAX_DATA_LEN },
 561         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 562         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
 563         [NL80211_ATTR_PEER_AID] =
 564                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 565         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 566         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 568         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 569         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 570         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 571         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 572         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 573         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 574         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 575         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 576         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 577         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 578                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 579         [NL80211_ATTR_MAC_HINT] = {
 580                 .type = NLA_EXACT_LEN_WARN,
 581                 .len = ETH_ALEN
 582         },
 583         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 584         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 585         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 586         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 587         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 588         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 589         [NL80211_ATTR_USER_PRIO] =
 590                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 591         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 592         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 593         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 594         [NL80211_ATTR_MAC_MASK] = {
 595                 .type = NLA_EXACT_LEN_WARN,
 596                 .len = ETH_ALEN
 597         },
 598         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 600         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 601         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 602         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 603         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 604         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 605                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 606         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 607                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 608         },
 609         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 610                 .type = NLA_EXACT_LEN_WARN,
 611                 .len = ETH_ALEN
 612         },
 613         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 614         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 615         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 616         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 617                                     .len = FILS_MAX_KEK_LEN },
 618         [NL80211_ATTR_FILS_NONCES] = {
 619                 .type = NLA_EXACT_LEN_WARN,
 620                 .len = 2 * FILS_NONCE_LEN
 621         },
 622         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 623         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 624         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 625         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 626                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 627         },
 628         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 629         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 630                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 631         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 632                                           .len = FILS_ERP_MAX_REALM_LEN },
 633         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 634         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 635                                         .len = FILS_ERP_MAX_RRK_LEN },
 636         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 637         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 638         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 639         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 640
 641         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 642         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 643         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 644         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 645                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 646
 647         [NL80211_ATTR_FTM_RESPONDER] = {
 648                 .type = NLA_NESTED,
 649                 .validation_data = nl80211_ftm_responder_policy,
 650         },
 651         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 652         [NL80211_ATTR_PEER_MEASUREMENTS] =
 653                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 654         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 655         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 656                                         .len = SAE_PASSWORD_MAX_LEN },
 657         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 658         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 659         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 660         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 661         [NL80211_ATTR_TID_CONFIG] =
 662                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 663         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 664         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 665         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 666 };
 667
 668 /* policy for the key attributes */
 669 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 670         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 671         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 672         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 673         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 674         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 675         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 676         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 677         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 678         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 679 };
 680
 681 /* policy for the key default flags */
 682 static const struct nla_policy
 683 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 684         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 685         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 686 };
 687
 688 #ifdef CONFIG_PM
 689 /* policy for WoWLAN attributes */
 690 static const struct nla_policy
 691 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 692         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 693         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 694         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 695         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 696         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 697         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 698         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 699         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 700         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 701         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 702 };
 703
 704 static const struct nla_policy
 705 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 706         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 707         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 708         [NL80211_WOWLAN_TCP_DST_MAC] = {
 709                 .type = NLA_EXACT_LEN_WARN,
 710                 .len = ETH_ALEN
 711         },
 712         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 713         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 714         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 715         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 716                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 717         },
 718         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 719                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 720         },
 721         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 722         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 723         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 724 };
 725 #endif /* CONFIG_PM */
 726
 727 /* policy for coalesce rule attributes */
 728 static const struct nla_policy
 729 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 730         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 731         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 732                 NLA_POLICY_RANGE(NLA_U32,
 733                                  NL80211_COALESCE_CONDITION_MATCH,
 734                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 735         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 736 };
 737
 738 /* policy for GTK rekey offload attributes */
 739 static const struct nla_policy
 740 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 741         [NL80211_REKEY_DATA_KEK] = {
 742                 .type = NLA_EXACT_LEN_WARN,
 743                 .len = NL80211_KEK_LEN,
 744         },
 745         [NL80211_REKEY_DATA_KCK] = {
 746                 .type = NLA_EXACT_LEN_WARN,
 747                 .len = NL80211_KCK_LEN,
 748         },
 749         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 750                 .type = NLA_EXACT_LEN_WARN,
 751                 .len = NL80211_REPLAY_CTR_LEN
 752         },
 753 };
 754
 755 static const struct nla_policy
 756 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 757         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 758         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 759         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 760         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 761 };
 762
 763 static const struct nla_policy
 764 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 765         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 766                                                  .len = IEEE80211_MAX_SSID_LEN },
 767         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 768                 .type = NLA_EXACT_LEN_WARN,
 769                 .len = ETH_ALEN
 770         },
 771         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 772         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 773                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 774 };
 775
 776 static const struct nla_policy
 777 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 778         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 779         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 780 };
 781
 782 static const struct nla_policy
 783 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 784         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 785         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 786         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 787                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 788         },
 789 };
 790
 791 /* policy for NAN function attributes */
 792 static const struct nla_policy
 793 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 794         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 795         [NL80211_NAN_FUNC_SERVICE_ID] = {
 796                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 797         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 798         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 799         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 800         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 801         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 802         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 803                 .type = NLA_EXACT_LEN_WARN,
 804                 .len = ETH_ALEN
 805         },
 806         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 807         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 808         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 809                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 810         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 811         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 812         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 813         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 814         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 815 };
 816
 817 /* policy for Service Response Filter attributes */
 818 static const struct nla_policy
 819 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 820         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 821         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 822                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 823         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 824         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 825 };
 826
 827 /* policy for packet pattern attributes */
 828 static const struct nla_policy
 829 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 830         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 831         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 832         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 833 };
 834
 835 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 836                               struct cfg80211_registered_device **rdev,
 837                               struct wireless_dev **wdev)
 838 {
 839         int err;
 840
 841         if (!cb->args[0]) {
 842                 struct nlattr **attrbuf;
 843
 844                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 845                                   GFP_KERNEL);
 846                 if (!attrbuf)
 847                         return -ENOMEM;
 848
 849                 err = nlmsg_parse_deprecated(cb->nlh,
 850                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 851                                              attrbuf, nl80211_fam.maxattr,
 852                                              nl80211_policy, NULL);
 853                 if (err) {
 854                         kfree(attrbuf);
 855                         return err;
 856                 }
 857
 858                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 859                                                    attrbuf);
 860                 kfree(attrbuf);
 861                 if (IS_ERR(*wdev))
 862                         return PTR_ERR(*wdev);
 863                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 864                 /* 0 is the first index - add 1 to parse only once */
 865                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 866                 cb->args[1] = (*wdev)->identifier;
 867         } else {
 868                 /* subtract the 1 again here */
 869                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 870                 struct wireless_dev *tmp;
 871
 872                 if (!wiphy)
 873                         return -ENODEV;
 874                 *rdev = wiphy_to_rdev(wiphy);
 875                 *wdev = NULL;
 876
 877                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 878                         if (tmp->identifier == cb->args[1]) {
 879                                 *wdev = tmp;
 880                                 break;
 881                         }
 882                 }
 883
 884                 if (!*wdev)
 885                         return -ENODEV;
 886         }
 887
 888         return 0;
 889 }
 890
 891 /* message building helper */
 892 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 893                      int flags, u8 cmd)
 894 {
 895         /* since there is no private header just add the generic one */
 896         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 897 }
 898
 899 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 900                                      const struct ieee80211_reg_rule *rule)
 901 {
 902         int j;
 903         struct nlattr *nl_wmm_rules =
 904                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 905
 906         if (!nl_wmm_rules)
 907                 goto nla_put_failure;
 908
 909         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 910                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 911
 912                 if (!nl_wmm_rule)
 913                         goto nla_put_failure;
 914
 915                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 916                                 rule->wmm_rule.client[j].cw_min) ||
 917                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 918                                 rule->wmm_rule.client[j].cw_max) ||
 919                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 920                                rule->wmm_rule.client[j].aifsn) ||
 921                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 922                                 rule->wmm_rule.client[j].cot))
 923                         goto nla_put_failure;
 924
 925                 nla_nest_end(msg, nl_wmm_rule);
 926         }
 927         nla_nest_end(msg, nl_wmm_rules);
 928
 929         return 0;
 930
 931 nla_put_failure:
 932         return -ENOBUFS;
 933 }
 934
 935 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 936                                    struct ieee80211_channel *chan,
 937                                    bool large)
 938 {
 939         /* Some channels must be completely excluded from the
 940          * list to protect old user-space tools from breaking
 941          */
 942         if (!large && chan->flags &
 943             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 944                 return 0;
 945
 946         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 947                         chan->center_freq))
 948                 goto nla_put_failure;
 949
 950         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 951             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 952                 goto nla_put_failure;
 953         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 954                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 955                         goto nla_put_failure;
 956                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 957                         goto nla_put_failure;
 958         }
 959         if (chan->flags & IEEE80211_CHAN_RADAR) {
 960                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 961                         goto nla_put_failure;
 962                 if (large) {
 963                         u32 time;
 964
 965                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 966
 967                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 968                                         chan->dfs_state))
 969                                 goto nla_put_failure;
 970                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 971                                         time))
 972                                 goto nla_put_failure;
 973                         if (nla_put_u32(msg,
 974                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 975                                         chan->dfs_cac_ms))
 976                                 goto nla_put_failure;
 977                 }
 978         }
 979
 980         if (large) {
 981                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 982                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 983                         goto nla_put_failure;
 984                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 985                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 986                         goto nla_put_failure;
 987                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 988                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 989                         goto nla_put_failure;
 990                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 991                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 992                         goto nla_put_failure;
 993                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 994                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 995                         goto nla_put_failure;
 996                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 997                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 998                         goto nla_put_failure;
 999                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1000                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1001                         goto nla_put_failure;
1002                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1003                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1004                         goto nla_put_failure;
1005                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1006                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1007                         goto nla_put_failure;
1008         }
1009
1010         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1011                         DBM_TO_MBM(chan->max_power)))
1012                 goto nla_put_failure;
1013
1014         if (large) {
1015                 const struct ieee80211_reg_rule *rule =
1016                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1017
1018                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1019                         if (nl80211_msg_put_wmm_rules(msg, rule))
1020                                 goto nla_put_failure;
1021                 }
1022         }
1023
1024         return 0;
1025
1026  nla_put_failure:
1027         return -ENOBUFS;
1028 }
1029
1030 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1031                                   struct cfg80211_txq_stats *txqstats,
1032                                   int attrtype)
1033 {
1034         struct nlattr *txqattr;
1035
1036 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1037         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1038             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1039                 return false;                                             \
1040         } while (0)
1041
1042         txqattr = nla_nest_start_noflag(msg, attrtype);
1043         if (!txqattr)
1044                 return false;
1045
1046         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1047         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1048         PUT_TXQVAL_U32(FLOWS, flows);
1049         PUT_TXQVAL_U32(DROPS, drops);
1050         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1051         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1052         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1053         PUT_TXQVAL_U32(COLLISIONS, collisions);
1054         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1055         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1056         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1057         nla_nest_end(msg, txqattr);
1058
1059 #undef PUT_TXQVAL_U32
1060         return true;
1061 }
1062
1063 /* netlink command implementations */
1064
1065 struct key_parse {
1066         struct key_params p;
1067         int idx;
1068         int type;
1069         bool def, defmgmt, defbeacon;
1070         bool def_uni, def_multi;
1071 };
1072
1073 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1074                                  struct key_parse *k)
1075 {
1076         struct nlattr *tb[NL80211_KEY_MAX + 1];
1077         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1078                                               nl80211_key_policy,
1079                                               info->extack);
1080         if (err)
1081                 return err;
1082
1083         k->def = !!tb[NL80211_KEY_DEFAULT];
1084         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1085         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1086
1087         if (k->def) {
1088                 k->def_uni = true;
1089                 k->def_multi = true;
1090         }
1091         if (k->defmgmt || k->defbeacon)
1092                 k->def_multi = true;
1093
1094         if (tb[NL80211_KEY_IDX])
1095                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1096
1097         if (tb[NL80211_KEY_DATA]) {
1098                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1099                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1100         }
1101
1102         if (tb[NL80211_KEY_SEQ]) {
1103                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1104                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1105         }
1106
1107         if (tb[NL80211_KEY_CIPHER])
1108                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1109
1110         if (tb[NL80211_KEY_TYPE])
1111                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1112
1113         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1114                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1115
1116                 err = nla_parse_nested_deprecated(kdt,
1117                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1118                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1119                                                   nl80211_key_default_policy,
1120                                                   info->extack);
1121                 if (err)
1122                         return err;
1123
1124                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1125                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1126         }
1127
1128         if (tb[NL80211_KEY_MODE])
1129                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1130
1131         return 0;
1132 }
1133
1134 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1135 {
1136         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1137                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1138                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1139         }
1140
1141         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1142                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1143                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1144         }
1145
1146         if (info->attrs[NL80211_ATTR_KEY_IDX])
1147                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1148
1149         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1150                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1151
1152         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1153         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1154
1155         if (k->def) {
1156                 k->def_uni = true;
1157                 k->def_multi = true;
1158         }
1159         if (k->defmgmt)
1160                 k->def_multi = true;
1161
1162         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1163                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1164
1165         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1166                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1167                 int err = nla_parse_nested_deprecated(kdt,
1168                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1169                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1170                                                       nl80211_key_default_policy,
1171                                                       info->extack);
1172                 if (err)
1173                         return err;
1174
1175                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1176                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1177         }
1178
1179         return 0;
1180 }
1181
1182 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1183 {
1184         int err;
1185
1186         memset(k, 0, sizeof(*k));
1187         k->idx = -1;
1188         k->type = -1;
1189
1190         if (info->attrs[NL80211_ATTR_KEY])
1191                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1192         else
1193                 err = nl80211_parse_key_old(info, k);
1194
1195         if (err)
1196                 return err;
1197
1198         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1199             (k->defbeacon ? 1 : 0) > 1) {
1200                 GENL_SET_ERR_MSG(info,
1201                                  "key with multiple default flags is invalid");
1202                 return -EINVAL;
1203         }
1204
1205         if (k->defmgmt || k->defbeacon) {
1206                 if (k->def_uni || !k->def_multi) {
1207                         GENL_SET_ERR_MSG(info,
1208                                          "defmgmt/defbeacon key must be mcast");
1209                         return -EINVAL;
1210                 }
1211         }
1212
1213         if (k->idx != -1) {
1214                 if (k->defmgmt) {
1215                         if (k->idx < 4 || k->idx > 5) {
1216                                 GENL_SET_ERR_MSG(info,
1217                                                  "defmgmt key idx not 4 or 5");
1218                                 return -EINVAL;
1219                         }
1220                 } else if (k->defbeacon) {
1221                         if (k->idx < 6 || k->idx > 7) {
1222                                 GENL_SET_ERR_MSG(info,
1223                                                  "defbeacon key idx not 6 or 7");
1224                                 return -EINVAL;
1225                         }
1226                 } else if (k->def) {
1227                         if (k->idx < 0 || k->idx > 3) {
1228                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1229                                 return -EINVAL;
1230                         }
1231                 } else {
1232                         if (k->idx < 0 || k->idx > 7) {
1233                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1234                                 return -EINVAL;
1235                         }
1236                 }
1237         }
1238
1239         return 0;
1240 }
1241
1242 static struct cfg80211_cached_keys *
1243 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1244                        struct genl_info *info, bool *no_ht)
1245 {
1246         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1247         struct key_parse parse;
1248         struct nlattr *key;
1249         struct cfg80211_cached_keys *result;
1250         int rem, err, def = 0;
1251         bool have_key = false;
1252
1253         nla_for_each_nested(key, keys, rem) {
1254                 have_key = true;
1255                 break;
1256         }
1257
1258         if (!have_key)
1259                 return NULL;
1260
1261         result = kzalloc(sizeof(*result), GFP_KERNEL);
1262         if (!result)
1263                 return ERR_PTR(-ENOMEM);
1264
1265         result->def = -1;
1266
1267         nla_for_each_nested(key, keys, rem) {
1268                 memset(&parse, 0, sizeof(parse));
1269                 parse.idx = -1;
1270
1271                 err = nl80211_parse_key_new(info, key, &parse);
1272                 if (err)
1273                         goto error;
1274                 err = -EINVAL;
1275                 if (!parse.p.key)
1276                         goto error;
1277                 if (parse.idx < 0 || parse.idx > 3) {
1278                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1279                         goto error;
1280                 }
1281                 if (parse.def) {
1282                         if (def) {
1283                                 GENL_SET_ERR_MSG(info,
1284                                                  "only one key can be default");
1285                                 goto error;
1286                         }
1287                         def = 1;
1288                         result->def = parse.idx;
1289                         if (!parse.def_uni || !parse.def_multi)
1290                                 goto error;
1291                 } else if (parse.defmgmt)
1292                         goto error;
1293                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1294                                                      parse.idx, false, NULL);
1295                 if (err)
1296                         goto error;
1297                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1298                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1299                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1300                         err = -EINVAL;
1301                         goto error;
1302                 }
1303                 result->params[parse.idx].cipher = parse.p.cipher;
1304                 result->params[parse.idx].key_len = parse.p.key_len;
1305                 result->params[parse.idx].key = result->data[parse.idx];
1306                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1307
1308                 /* must be WEP key if we got here */
1309                 if (no_ht)
1310                         *no_ht = true;
1311         }
1312
1313         if (result->def < 0) {
1314                 err = -EINVAL;
1315                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1316                 goto error;
1317         }
1318
1319         return result;
1320  error:
1321         kfree(result);
1322         return ERR_PTR(err);
1323 }
1324
1325 static int nl80211_key_allowed(struct wireless_dev *wdev)
1326 {
1327         ASSERT_WDEV_LOCK(wdev);
1328
1329         switch (wdev->iftype) {
1330         case NL80211_IFTYPE_AP:
1331         case NL80211_IFTYPE_AP_VLAN:
1332         case NL80211_IFTYPE_P2P_GO:
1333         case NL80211_IFTYPE_MESH_POINT:
1334                 break;
1335         case NL80211_IFTYPE_ADHOC:
1336         case NL80211_IFTYPE_STATION:
1337         case NL80211_IFTYPE_P2P_CLIENT:
1338                 if (!wdev->current_bss)
1339                         return -ENOLINK;
1340                 break;
1341         case NL80211_IFTYPE_UNSPECIFIED:
1342         case NL80211_IFTYPE_OCB:
1343         case NL80211_IFTYPE_MONITOR:
1344         case NL80211_IFTYPE_NAN:
1345         case NL80211_IFTYPE_P2P_DEVICE:
1346         case NL80211_IFTYPE_WDS:
1347         case NUM_NL80211_IFTYPES:
1348                 return -EINVAL;
1349         }
1350
1351         return 0;
1352 }
1353
1354 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1355                                                         struct nlattr *tb)
1356 {
1357         struct ieee80211_channel *chan;
1358
1359         if (tb == NULL)
1360                 return NULL;
1361         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1362         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1363                 return NULL;
1364         return chan;
1365 }
1366
1367 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1368 {
1369         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1370         int i;
1371
1372         if (!nl_modes)
1373                 goto nla_put_failure;
1374
1375         i = 0;
1376         while (ifmodes) {
1377                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1378                         goto nla_put_failure;
1379                 ifmodes >>= 1;
1380                 i++;
1381         }
1382
1383         nla_nest_end(msg, nl_modes);
1384         return 0;
1385
1386 nla_put_failure:
1387         return -ENOBUFS;
1388 }
1389
1390 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1391                                           struct sk_buff *msg,
1392                                           bool large)
1393 {
1394         struct nlattr *nl_combis;
1395         int i, j;
1396
1397         nl_combis = nla_nest_start_noflag(msg,
1398                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1399         if (!nl_combis)
1400                 goto nla_put_failure;
1401
1402         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1403                 const struct ieee80211_iface_combination *c;
1404                 struct nlattr *nl_combi, *nl_limits;
1405
1406                 c = &wiphy->iface_combinations[i];
1407
1408                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1409                 if (!nl_combi)
1410                         goto nla_put_failure;
1411
1412                 nl_limits = nla_nest_start_noflag(msg,
1413                                                   NL80211_IFACE_COMB_LIMITS);
1414                 if (!nl_limits)
1415                         goto nla_put_failure;
1416
1417                 for (j = 0; j < c->n_limits; j++) {
1418                         struct nlattr *nl_limit;
1419
1420                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1421                         if (!nl_limit)
1422                                 goto nla_put_failure;
1423                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1424                                         c->limits[j].max))
1425                                 goto nla_put_failure;
1426                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1427                                                 c->limits[j].types))
1428                                 goto nla_put_failure;
1429                         nla_nest_end(msg, nl_limit);
1430                 }
1431
1432                 nla_nest_end(msg, nl_limits);
1433
1434                 if (c->beacon_int_infra_match &&
1435                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1436                         goto nla_put_failure;
1437                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1438                                 c->num_different_channels) ||
1439                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1440                                 c->max_interfaces))
1441                         goto nla_put_failure;
1442                 if (large &&
1443                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1444                                 c->radar_detect_widths) ||
1445                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1446                                 c->radar_detect_regions)))
1447                         goto nla_put_failure;
1448                 if (c->beacon_int_min_gcd &&
1449                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1450                                 c->beacon_int_min_gcd))
1451                         goto nla_put_failure;
1452
1453                 nla_nest_end(msg, nl_combi);
1454         }
1455
1456         nla_nest_end(msg, nl_combis);
1457
1458         return 0;
1459 nla_put_failure:
1460         return -ENOBUFS;
1461 }
1462
1463 #ifdef CONFIG_PM
1464 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1465                                         struct sk_buff *msg)
1466 {
1467         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1468         struct nlattr *nl_tcp;
1469
1470         if (!tcp)
1471                 return 0;
1472
1473         nl_tcp = nla_nest_start_noflag(msg,
1474                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1475         if (!nl_tcp)
1476                 return -ENOBUFS;
1477
1478         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1479                         tcp->data_payload_max))
1480                 return -ENOBUFS;
1481
1482         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1483                         tcp->data_payload_max))
1484                 return -ENOBUFS;
1485
1486         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1487                 return -ENOBUFS;
1488
1489         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1490                                 sizeof(*tcp->tok), tcp->tok))
1491                 return -ENOBUFS;
1492
1493         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1494                         tcp->data_interval_max))
1495                 return -ENOBUFS;
1496
1497         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1498                         tcp->wake_payload_max))
1499                 return -ENOBUFS;
1500
1501         nla_nest_end(msg, nl_tcp);
1502         return 0;
1503 }
1504
1505 static int nl80211_send_wowlan(struct sk_buff *msg,
1506                                struct cfg80211_registered_device *rdev,
1507                                bool large)
1508 {
1509         struct nlattr *nl_wowlan;
1510
1511         if (!rdev->wiphy.wowlan)
1512                 return 0;
1513
1514         nl_wowlan = nla_nest_start_noflag(msg,
1515                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1516         if (!nl_wowlan)
1517                 return -ENOBUFS;
1518
1519         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1520              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1521             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1522              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1523             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1524              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1525             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1526              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1527             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1528              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1529             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1530              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1531             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1532              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1533             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1534              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1535                 return -ENOBUFS;
1536
1537         if (rdev->wiphy.wowlan->n_patterns) {
1538                 struct nl80211_pattern_support pat = {
1539                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1540                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1541                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1542                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1543                 };
1544
1545                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1546                             sizeof(pat), &pat))
1547                         return -ENOBUFS;
1548         }
1549
1550         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1551             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1552                         rdev->wiphy.wowlan->max_nd_match_sets))
1553                 return -ENOBUFS;
1554
1555         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1556                 return -ENOBUFS;
1557
1558         nla_nest_end(msg, nl_wowlan);
1559
1560         return 0;
1561 }
1562 #endif
1563
1564 static int nl80211_send_coalesce(struct sk_buff *msg,
1565                                  struct cfg80211_registered_device *rdev)
1566 {
1567         struct nl80211_coalesce_rule_support rule;
1568
1569         if (!rdev->wiphy.coalesce)
1570                 return 0;
1571
1572         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1573         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1574         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1575         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1576         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1577         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1578
1579         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1580                 return -ENOBUFS;
1581
1582         return 0;
1583 }
1584
1585 static int
1586 nl80211_send_iftype_data(struct sk_buff *msg,
1587                          const struct ieee80211_sband_iftype_data *iftdata)
1588 {
1589         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1590
1591         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1592                                 iftdata->types_mask))
1593                 return -ENOBUFS;
1594
1595         if (he_cap->has_he) {
1596                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1597                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1598                             he_cap->he_cap_elem.mac_cap_info) ||
1599                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1600                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1601                             he_cap->he_cap_elem.phy_cap_info) ||
1602                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1603                             sizeof(he_cap->he_mcs_nss_supp),
1604                             &he_cap->he_mcs_nss_supp) ||
1605                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1606                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1607                         return -ENOBUFS;
1608         }
1609
1610         return 0;
1611 }
1612
1613 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1614                                       struct ieee80211_supported_band *sband)
1615 {
1616         struct nlattr *nl_rates, *nl_rate;
1617         struct ieee80211_rate *rate;
1618         int i;
1619
1620         /* add HT info */
1621         if (sband->ht_cap.ht_supported &&
1622             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1623                      sizeof(sband->ht_cap.mcs),
1624                      &sband->ht_cap.mcs) ||
1625              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1626                          sband->ht_cap.cap) ||
1627              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1628                         sband->ht_cap.ampdu_factor) ||
1629              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1630                         sband->ht_cap.ampdu_density)))
1631                 return -ENOBUFS;
1632
1633         /* add VHT info */
1634         if (sband->vht_cap.vht_supported &&
1635             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1636                      sizeof(sband->vht_cap.vht_mcs),
1637                      &sband->vht_cap.vht_mcs) ||
1638              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1639                          sband->vht_cap.cap)))
1640                 return -ENOBUFS;
1641
1642         if (sband->n_iftype_data) {
1643                 struct nlattr *nl_iftype_data =
1644                         nla_nest_start_noflag(msg,
1645                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1646                 int err;
1647
1648                 if (!nl_iftype_data)
1649                         return -ENOBUFS;
1650
1651                 for (i = 0; i < sband->n_iftype_data; i++) {
1652                         struct nlattr *iftdata;
1653
1654                         iftdata = nla_nest_start_noflag(msg, i + 1);
1655                         if (!iftdata)
1656                                 return -ENOBUFS;
1657
1658                         err = nl80211_send_iftype_data(msg,
1659                                                        &sband->iftype_data[i]);
1660                         if (err)
1661                                 return err;
1662
1663                         nla_nest_end(msg, iftdata);
1664                 }
1665
1666                 nla_nest_end(msg, nl_iftype_data);
1667         }
1668
1669         /* add EDMG info */
1670         if (sband->edmg_cap.channels &&
1671             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1672                        sband->edmg_cap.channels) ||
1673             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1674                        sband->edmg_cap.bw_config)))
1675
1676                 return -ENOBUFS;
1677
1678         /* add bitrates */
1679         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1680         if (!nl_rates)
1681                 return -ENOBUFS;
1682
1683         for (i = 0; i < sband->n_bitrates; i++) {
1684                 nl_rate = nla_nest_start_noflag(msg, i);
1685                 if (!nl_rate)
1686                         return -ENOBUFS;
1687
1688                 rate = &sband->bitrates[i];
1689                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1690                                 rate->bitrate))
1691                         return -ENOBUFS;
1692                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1693                     nla_put_flag(msg,
1694                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1695                         return -ENOBUFS;
1696
1697                 nla_nest_end(msg, nl_rate);
1698         }
1699
1700         nla_nest_end(msg, nl_rates);
1701
1702         return 0;
1703 }
1704
1705 static int
1706 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1707                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1708 {
1709         u16 stypes;
1710         struct nlattr *nl_ftypes, *nl_ifs;
1711         enum nl80211_iftype ift;
1712         int i;
1713
1714         if (!mgmt_stypes)
1715                 return 0;
1716
1717         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1718         if (!nl_ifs)
1719                 return -ENOBUFS;
1720
1721         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1722                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1723                 if (!nl_ftypes)
1724                         return -ENOBUFS;
1725                 i = 0;
1726                 stypes = mgmt_stypes[ift].tx;
1727                 while (stypes) {
1728                         if ((stypes & 1) &&
1729                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1730                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1731                                 return -ENOBUFS;
1732                         stypes >>= 1;
1733                         i++;
1734                 }
1735                 nla_nest_end(msg, nl_ftypes);
1736         }
1737
1738         nla_nest_end(msg, nl_ifs);
1739
1740         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1741         if (!nl_ifs)
1742                 return -ENOBUFS;
1743
1744         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1745                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1746                 if (!nl_ftypes)
1747                         return -ENOBUFS;
1748                 i = 0;
1749                 stypes = mgmt_stypes[ift].rx;
1750                 while (stypes) {
1751                         if ((stypes & 1) &&
1752                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1753                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1754                                 return -ENOBUFS;
1755                         stypes >>= 1;
1756                         i++;
1757                 }
1758                 nla_nest_end(msg, nl_ftypes);
1759         }
1760         nla_nest_end(msg, nl_ifs);
1761
1762         return 0;
1763 }
1764
1765 #define CMD(op, n)                                                      \
1766          do {                                                           \
1767                 if (rdev->ops->op) {                                    \
1768                         i++;                                            \
1769                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1770                                 goto nla_put_failure;                   \
1771                 }                                                       \
1772         } while (0)
1773
1774 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1775                                         struct sk_buff *msg)
1776 {
1777         int i = 0;
1778
1779         /*
1780          * do *NOT* add anything into this function, new things need to be
1781          * advertised only to new versions of userspace that can deal with
1782          * the split (and they can't possibly care about new features...
1783          */
1784         CMD(add_virtual_intf, NEW_INTERFACE);
1785         CMD(change_virtual_intf, SET_INTERFACE);
1786         CMD(add_key, NEW_KEY);
1787         CMD(start_ap, START_AP);
1788         CMD(add_station, NEW_STATION);
1789         CMD(add_mpath, NEW_MPATH);
1790         CMD(update_mesh_config, SET_MESH_CONFIG);
1791         CMD(change_bss, SET_BSS);
1792         CMD(auth, AUTHENTICATE);
1793         CMD(assoc, ASSOCIATE);
1794         CMD(deauth, DEAUTHENTICATE);
1795         CMD(disassoc, DISASSOCIATE);
1796         CMD(join_ibss, JOIN_IBSS);
1797         CMD(join_mesh, JOIN_MESH);
1798         CMD(set_pmksa, SET_PMKSA);
1799         CMD(del_pmksa, DEL_PMKSA);
1800         CMD(flush_pmksa, FLUSH_PMKSA);
1801         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1802                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1803         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1804         CMD(mgmt_tx, FRAME);
1805         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1806         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1807                 i++;
1808                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1809                         goto nla_put_failure;
1810         }
1811         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1812             rdev->ops->join_mesh) {
1813                 i++;
1814                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1815                         goto nla_put_failure;
1816         }
1817         CMD(set_wds_peer, SET_WDS_PEER);
1818         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1819                 CMD(tdls_mgmt, TDLS_MGMT);
1820                 CMD(tdls_oper, TDLS_OPER);
1821         }
1822         if (rdev->wiphy.max_sched_scan_reqs)
1823                 CMD(sched_scan_start, START_SCHED_SCAN);
1824         CMD(probe_client, PROBE_CLIENT);
1825         CMD(set_noack_map, SET_NOACK_MAP);
1826         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1827                 i++;
1828                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1829                         goto nla_put_failure;
1830         }
1831         CMD(start_p2p_device, START_P2P_DEVICE);
1832         CMD(set_mcast_rate, SET_MCAST_RATE);
1833 #ifdef CONFIG_NL80211_TESTMODE
1834         CMD(testmode_cmd, TESTMODE);
1835 #endif
1836
1837         if (rdev->ops->connect || rdev->ops->auth) {
1838                 i++;
1839                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1840                         goto nla_put_failure;
1841         }
1842
1843         if (rdev->ops->disconnect || rdev->ops->deauth) {
1844                 i++;
1845                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1846                         goto nla_put_failure;
1847         }
1848
1849         return i;
1850  nla_put_failure:
1851         return -ENOBUFS;
1852 }
1853
1854 static int
1855 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1856                            struct sk_buff *msg)
1857 {
1858         struct nlattr *ftm;
1859
1860         if (!cap->ftm.supported)
1861                 return 0;
1862
1863         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1864         if (!ftm)
1865                 return -ENOBUFS;
1866
1867         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1868                 return -ENOBUFS;
1869         if (cap->ftm.non_asap &&
1870             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1871                 return -ENOBUFS;
1872         if (cap->ftm.request_lci &&
1873             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1874                 return -ENOBUFS;
1875         if (cap->ftm.request_civicloc &&
1876             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1877                 return -ENOBUFS;
1878         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1879                         cap->ftm.preambles))
1880                 return -ENOBUFS;
1881         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1882                         cap->ftm.bandwidths))
1883                 return -ENOBUFS;
1884         if (cap->ftm.max_bursts_exponent >= 0 &&
1885             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1886                         cap->ftm.max_bursts_exponent))
1887                 return -ENOBUFS;
1888         if (cap->ftm.max_ftms_per_burst &&
1889             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1890                         cap->ftm.max_ftms_per_burst))
1891                 return -ENOBUFS;
1892         if (cap->ftm.trigger_based &&
1893             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1894                 return -ENOBUFS;
1895         if (cap->ftm.non_trigger_based &&
1896             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1897                 return -ENOBUFS;
1898
1899         nla_nest_end(msg, ftm);
1900         return 0;
1901 }
1902
1903 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1904                                   struct sk_buff *msg)
1905 {
1906         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1907         struct nlattr *pmsr, *caps;
1908
1909         if (!cap)
1910                 return 0;
1911
1912         /*
1913          * we don't need to clean up anything here since the caller
1914          * will genlmsg_cancel() if we fail
1915          */
1916
1917         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1918         if (!pmsr)
1919                 return -ENOBUFS;
1920
1921         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1922                 return -ENOBUFS;
1923
1924         if (cap->report_ap_tsf &&
1925             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1926                 return -ENOBUFS;
1927
1928         if (cap->randomize_mac_addr &&
1929             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1930                 return -ENOBUFS;
1931
1932         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1933         if (!caps)
1934                 return -ENOBUFS;
1935
1936         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1937                 return -ENOBUFS;
1938
1939         nla_nest_end(msg, caps);
1940         nla_nest_end(msg, pmsr);
1941
1942         return 0;
1943 }
1944
1945 static int
1946 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1947                               struct sk_buff *msg)
1948 {
1949         int i;
1950         struct nlattr *nested, *nested_akms;
1951         const struct wiphy_iftype_akm_suites *iftype_akms;
1952
1953         if (!rdev->wiphy.num_iftype_akm_suites ||
1954             !rdev->wiphy.iftype_akm_suites)
1955                 return 0;
1956
1957         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1958         if (!nested)
1959                 return -ENOBUFS;
1960
1961         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1962                 nested_akms = nla_nest_start(msg, i + 1);
1963                 if (!nested_akms)
1964                         return -ENOBUFS;
1965
1966                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1967
1968                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1969                                         iftype_akms->iftypes_mask))
1970                         return -ENOBUFS;
1971
1972                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1973                             sizeof(u32) * iftype_akms->n_akm_suites,
1974                             iftype_akms->akm_suites)) {
1975                         return -ENOBUFS;
1976                 }
1977                 nla_nest_end(msg, nested_akms);
1978         }
1979
1980         nla_nest_end(msg, nested);
1981
1982         return 0;
1983 }
1984
1985 static int
1986 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1987                                struct sk_buff *msg)
1988 {
1989         struct nlattr *supp;
1990
1991         if (!rdev->wiphy.tid_config_support.vif &&
1992             !rdev->wiphy.tid_config_support.peer)
1993                 return 0;
1994
1995         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1996         if (!supp)
1997                 return -ENOSPC;
1998
1999         if (rdev->wiphy.tid_config_support.vif &&
2000             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2001                               rdev->wiphy.tid_config_support.vif,
2002                               NL80211_TID_CONFIG_ATTR_PAD))
2003                 goto fail;
2004
2005         if (rdev->wiphy.tid_config_support.peer &&
2006             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2007                               rdev->wiphy.tid_config_support.peer,
2008                               NL80211_TID_CONFIG_ATTR_PAD))
2009                 goto fail;
2010
2011         /* for now we just use the same value ... makes more sense */
2012         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2013                        rdev->wiphy.tid_config_support.max_retry))
2014                 goto fail;
2015         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2016                        rdev->wiphy.tid_config_support.max_retry))
2017                 goto fail;
2018
2019         nla_nest_end(msg, supp);
2020
2021         return 0;
2022 fail:
2023         nla_nest_cancel(msg, supp);
2024         return -ENOBUFS;
2025 }
2026
2027 struct nl80211_dump_wiphy_state {
2028         s64 filter_wiphy;
2029         long start;
2030         long split_start, band_start, chan_start, capa_start;
2031         bool split;
2032 };
2033
2034 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2035                               enum nl80211_commands cmd,
2036                               struct sk_buff *msg, u32 portid, u32 seq,
2037                               int flags, struct nl80211_dump_wiphy_state *state)
2038 {
2039         void *hdr;
2040         struct nlattr *nl_bands, *nl_band;
2041         struct nlattr *nl_freqs, *nl_freq;
2042         struct nlattr *nl_cmds;
2043         enum nl80211_band band;
2044         struct ieee80211_channel *chan;
2045         int i;
2046         const struct ieee80211_txrx_stypes *mgmt_stypes =
2047                                 rdev->wiphy.mgmt_stypes;
2048         u32 features;
2049
2050         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2051         if (!hdr)
2052                 return -ENOBUFS;
2053
2054         if (WARN_ON(!state))
2055                 return -EINVAL;
2056
2057         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2058             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2059                            wiphy_name(&rdev->wiphy)) ||
2060             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2061                         cfg80211_rdev_list_generation))
2062                 goto nla_put_failure;
2063
2064         if (cmd != NL80211_CMD_NEW_WIPHY)
2065                 goto finish;
2066
2067         switch (state->split_start) {
2068         case 0:
2069                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2070                                rdev->wiphy.retry_short) ||
2071                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2072                                rdev->wiphy.retry_long) ||
2073                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2074                                 rdev->wiphy.frag_threshold) ||
2075                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2076                                 rdev->wiphy.rts_threshold) ||
2077                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2078                                rdev->wiphy.coverage_class) ||
2079                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2080                                rdev->wiphy.max_scan_ssids) ||
2081                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2082                                rdev->wiphy.max_sched_scan_ssids) ||
2083                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2084                                 rdev->wiphy.max_scan_ie_len) ||
2085                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2086                                 rdev->wiphy.max_sched_scan_ie_len) ||
2087                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2088                                rdev->wiphy.max_match_sets) ||
2089                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2090                                 rdev->wiphy.max_sched_scan_plans) ||
2091                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2092                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2093                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2094                                 rdev->wiphy.max_sched_scan_plan_iterations))
2095                         goto nla_put_failure;
2096
2097                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2098                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2099                         goto nla_put_failure;
2100                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2101                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2102                         goto nla_put_failure;
2103                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2104                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2105                         goto nla_put_failure;
2106                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2107                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2108                         goto nla_put_failure;
2109                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2110                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2111                         goto nla_put_failure;
2112                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2113                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2114                         goto nla_put_failure;
2115                 state->split_start++;
2116                 if (state->split)
2117                         break;
2118                 /* fall through */
2119         case 1:
2120                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2121                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2122                             rdev->wiphy.cipher_suites))
2123                         goto nla_put_failure;
2124
2125                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2126                                rdev->wiphy.max_num_pmkids))
2127                         goto nla_put_failure;
2128
2129                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2130                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2131                         goto nla_put_failure;
2132
2133                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2134                                 rdev->wiphy.available_antennas_tx) ||
2135                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2136                                 rdev->wiphy.available_antennas_rx))
2137                         goto nla_put_failure;
2138
2139                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2140                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2141                                 rdev->wiphy.probe_resp_offload))
2142                         goto nla_put_failure;
2143
2144                 if ((rdev->wiphy.available_antennas_tx ||
2145                      rdev->wiphy.available_antennas_rx) &&
2146                     rdev->ops->get_antenna) {
2147                         u32 tx_ant = 0, rx_ant = 0;
2148                         int res;
2149
2150                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2151                         if (!res) {
2152                                 if (nla_put_u32(msg,
2153                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2154                                                 tx_ant) ||
2155                                     nla_put_u32(msg,
2156                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2157                                                 rx_ant))
2158                                         goto nla_put_failure;
2159                         }
2160                 }
2161
2162                 state->split_start++;
2163                 if (state->split)
2164                         break;
2165                 /* fall through */
2166         case 2:
2167                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2168                                         rdev->wiphy.interface_modes))
2169                                 goto nla_put_failure;
2170                 state->split_start++;
2171                 if (state->split)
2172                         break;
2173                 /* fall through */
2174         case 3:
2175                 nl_bands = nla_nest_start_noflag(msg,
2176                                                  NL80211_ATTR_WIPHY_BANDS);
2177                 if (!nl_bands)
2178                         goto nla_put_failure;
2179
2180                 for (band = state->band_start;
2181                      band < NUM_NL80211_BANDS; band++) {
2182                         struct ieee80211_supported_band *sband;
2183
2184                         sband = rdev->wiphy.bands[band];
2185
2186                         if (!sband)
2187                                 continue;
2188
2189                         nl_band = nla_nest_start_noflag(msg, band);
2190                         if (!nl_band)
2191                                 goto nla_put_failure;
2192
2193                         switch (state->chan_start) {
2194                         case 0:
2195                                 if (nl80211_send_band_rateinfo(msg, sband))
2196                                         goto nla_put_failure;
2197                                 state->chan_start++;
2198                                 if (state->split)
2199                                         break;
2200                                 /* fall through */
2201                         default:
2202                                 /* add frequencies */
2203                                 nl_freqs = nla_nest_start_noflag(msg,
2204                                                                  NL80211_BAND_ATTR_FREQS);
2205                                 if (!nl_freqs)
2206                                         goto nla_put_failure;
2207
2208                                 for (i = state->chan_start - 1;
2209                                      i < sband->n_channels;
2210                                      i++) {
2211                                         nl_freq = nla_nest_start_noflag(msg,
2212                                                                         i);
2213                                         if (!nl_freq)
2214                                                 goto nla_put_failure;
2215
2216                                         chan = &sband->channels[i];
2217
2218                                         if (nl80211_msg_put_channel(
2219                                                         msg, &rdev->wiphy, chan,
2220                                                         state->split))
2221                                                 goto nla_put_failure;
2222
2223                                         nla_nest_end(msg, nl_freq);
2224                                         if (state->split)
2225                                                 break;
2226                                 }
2227                                 if (i < sband->n_channels)
2228                                         state->chan_start = i + 2;
2229                                 else
2230                                         state->chan_start = 0;
2231                                 nla_nest_end(msg, nl_freqs);
2232                         }
2233
2234                         nla_nest_end(msg, nl_band);
2235
2236                         if (state->split) {
2237                                 /* start again here */
2238                                 if (state->chan_start)
2239                                         band--;
2240                                 break;
2241                         }
2242                 }
2243                 nla_nest_end(msg, nl_bands);
2244
2245                 if (band < NUM_NL80211_BANDS)
2246                         state->band_start = band + 1;
2247                 else
2248                         state->band_start = 0;
2249
2250                 /* if bands & channels are done, continue outside */
2251                 if (state->band_start == 0 && state->chan_start == 0)
2252                         state->split_start++;
2253                 if (state->split)
2254                         break;
2255                 /* fall through */
2256         case 4:
2257                 nl_cmds = nla_nest_start_noflag(msg,
2258                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2259                 if (!nl_cmds)
2260                         goto nla_put_failure;
2261
2262                 i = nl80211_add_commands_unsplit(rdev, msg);
2263                 if (i < 0)
2264                         goto nla_put_failure;
2265                 if (state->split) {
2266                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2267                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2268                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2269                                 CMD(channel_switch, CHANNEL_SWITCH);
2270                         CMD(set_qos_map, SET_QOS_MAP);
2271                         if (rdev->wiphy.features &
2272                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2273                                 CMD(add_tx_ts, ADD_TX_TS);
2274                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2275                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2276                         CMD(update_ft_ies, UPDATE_FT_IES);
2277                 }
2278 #undef CMD
2279
2280                 nla_nest_end(msg, nl_cmds);
2281                 state->split_start++;
2282                 if (state->split)
2283                         break;
2284                 /* fall through */
2285         case 5:
2286                 if (rdev->ops->remain_on_channel &&
2287                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2288                     nla_put_u32(msg,
2289                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2290                                 rdev->wiphy.max_remain_on_channel_duration))
2291                         goto nla_put_failure;
2292
2293                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2294                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2295                         goto nla_put_failure;
2296
2297                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2298                         goto nla_put_failure;
2299                 state->split_start++;
2300                 if (state->split)
2301                         break;
2302                 /* fall through */
2303         case 6:
2304 #ifdef CONFIG_PM
2305                 if (nl80211_send_wowlan(msg, rdev, state->split))
2306                         goto nla_put_failure;
2307                 state->split_start++;
2308                 if (state->split)
2309                         break;
2310 #else
2311                 state->split_start++;
2312 #endif
2313                 /* fall through */
2314         case 7:
2315                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2316                                         rdev->wiphy.software_iftypes))
2317                         goto nla_put_failure;
2318
2319                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2320                                                    state->split))
2321                         goto nla_put_failure;
2322
2323                 state->split_start++;
2324                 if (state->split)
2325                         break;
2326                 /* fall through */
2327         case 8:
2328                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2329                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2330                                 rdev->wiphy.ap_sme_capa))
2331                         goto nla_put_failure;
2332
2333                 features = rdev->wiphy.features;
2334                 /*
2335                  * We can only add the per-channel limit information if the
2336                  * dump is split, otherwise it makes it too big. Therefore
2337                  * only advertise it in that case.
2338                  */
2339                 if (state->split)
2340                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2341                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2342                         goto nla_put_failure;
2343
2344                 if (rdev->wiphy.ht_capa_mod_mask &&
2345                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2346                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2347                             rdev->wiphy.ht_capa_mod_mask))
2348                         goto nla_put_failure;
2349
2350                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2351                     rdev->wiphy.max_acl_mac_addrs &&
2352                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2353                                 rdev->wiphy.max_acl_mac_addrs))
2354                         goto nla_put_failure;
2355
2356                 /*
2357                  * Any information below this point is only available to
2358                  * applications that can deal with it being split. This
2359                  * helps ensure that newly added capabilities don't break
2360                  * older tools by overrunning their buffers.
2361                  *
2362                  * We still increment split_start so that in the split
2363                  * case we'll continue with more data in the next round,
2364                  * but break unconditionally so unsplit data stops here.
2365                  */
2366                 state->split_start++;
2367                 break;
2368         case 9:
2369                 if (rdev->wiphy.extended_capabilities &&
2370                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2371                              rdev->wiphy.extended_capabilities_len,
2372                              rdev->wiphy.extended_capabilities) ||
2373                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2374                              rdev->wiphy.extended_capabilities_len,
2375                              rdev->wiphy.extended_capabilities_mask)))
2376                         goto nla_put_failure;
2377
2378                 if (rdev->wiphy.vht_capa_mod_mask &&
2379                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2380                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2381                             rdev->wiphy.vht_capa_mod_mask))
2382                         goto nla_put_failure;
2383
2384                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2385                             rdev->wiphy.perm_addr))
2386                         goto nla_put_failure;
2387
2388                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2389                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2390                             rdev->wiphy.addr_mask))
2391                         goto nla_put_failure;
2392
2393                 if (rdev->wiphy.n_addresses > 1) {
2394                         void *attr;
2395
2396                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2397                         if (!attr)
2398                                 goto nla_put_failure;
2399
2400                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2401                                 if (nla_put(msg, i + 1, ETH_ALEN,
2402                                             rdev->wiphy.addresses[i].addr))
2403                                         goto nla_put_failure;
2404
2405                         nla_nest_end(msg, attr);
2406                 }
2407
2408                 state->split_start++;
2409                 break;
2410         case 10:
2411                 if (nl80211_send_coalesce(msg, rdev))
2412                         goto nla_put_failure;
2413
2414                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2415                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2416                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2417                         goto nla_put_failure;
2418
2419                 if (rdev->wiphy.max_ap_assoc_sta &&
2420                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2421                                 rdev->wiphy.max_ap_assoc_sta))
2422                         goto nla_put_failure;
2423
2424                 state->split_start++;
2425                 break;
2426         case 11:
2427                 if (rdev->wiphy.n_vendor_commands) {
2428                         const struct nl80211_vendor_cmd_info *info;
2429                         struct nlattr *nested;
2430
2431                         nested = nla_nest_start_noflag(msg,
2432                                                        NL80211_ATTR_VENDOR_DATA);
2433                         if (!nested)
2434                                 goto nla_put_failure;
2435
2436                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2437                                 info = &rdev->wiphy.vendor_commands[i].info;
2438                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2439                                         goto nla_put_failure;
2440                         }
2441                         nla_nest_end(msg, nested);
2442                 }
2443
2444                 if (rdev->wiphy.n_vendor_events) {
2445                         const struct nl80211_vendor_cmd_info *info;
2446                         struct nlattr *nested;
2447
2448                         nested = nla_nest_start_noflag(msg,
2449                                                        NL80211_ATTR_VENDOR_EVENTS);
2450                         if (!nested)
2451                                 goto nla_put_failure;
2452
2453                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2454                                 info = &rdev->wiphy.vendor_events[i];
2455                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2456                                         goto nla_put_failure;
2457                         }
2458                         nla_nest_end(msg, nested);
2459                 }
2460                 state->split_start++;
2461                 break;
2462         case 12:
2463                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2464                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2465                                rdev->wiphy.max_num_csa_counters))
2466                         goto nla_put_failure;
2467
2468                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2469                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2470                         goto nla_put_failure;
2471
2472                 if (rdev->wiphy.max_sched_scan_reqs &&
2473                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2474                                 rdev->wiphy.max_sched_scan_reqs))
2475                         goto nla_put_failure;
2476
2477                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2478                             sizeof(rdev->wiphy.ext_features),
2479                             rdev->wiphy.ext_features))
2480                         goto nla_put_failure;
2481
2482                 if (rdev->wiphy.bss_select_support) {
2483                         struct nlattr *nested;
2484                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2485
2486                         nested = nla_nest_start_noflag(msg,
2487                                                        NL80211_ATTR_BSS_SELECT);
2488                         if (!nested)
2489                                 goto nla_put_failure;
2490
2491                         i = 0;
2492                         while (bss_select_support) {
2493                                 if ((bss_select_support & 1) &&
2494                                     nla_put_flag(msg, i))
2495                                         goto nla_put_failure;
2496                                 i++;
2497                                 bss_select_support >>= 1;
2498                         }
2499                         nla_nest_end(msg, nested);
2500                 }
2501
2502                 state->split_start++;
2503                 break;
2504         case 13:
2505                 if (rdev->wiphy.num_iftype_ext_capab &&
2506                     rdev->wiphy.iftype_ext_capab) {
2507                         struct nlattr *nested_ext_capab, *nested;
2508
2509                         nested = nla_nest_start_noflag(msg,
2510                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2511                         if (!nested)
2512                                 goto nla_put_failure;
2513
2514                         for (i = state->capa_start;
2515                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2516                                 const struct wiphy_iftype_ext_capab *capab;
2517
2518                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2519
2520                                 nested_ext_capab = nla_nest_start_noflag(msg,
2521                                                                          i);
2522                                 if (!nested_ext_capab ||
2523                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2524                                                 capab->iftype) ||
2525                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2526                                             capab->extended_capabilities_len,
2527                                             capab->extended_capabilities) ||
2528                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2529                                             capab->extended_capabilities_len,
2530                                             capab->extended_capabilities_mask))
2531                                         goto nla_put_failure;
2532
2533                                 nla_nest_end(msg, nested_ext_capab);
2534                                 if (state->split)
2535                                         break;
2536                         }
2537                         nla_nest_end(msg, nested);
2538                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2539                                 state->capa_start = i + 1;
2540                                 break;
2541                         }
2542                 }
2543
2544                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2545                                 rdev->wiphy.nan_supported_bands))
2546                         goto nla_put_failure;
2547
2548                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2549                                             NL80211_EXT_FEATURE_TXQS)) {
2550                         struct cfg80211_txq_stats txqstats = {};
2551                         int res;
2552
2553                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2554                         if (!res &&
2555                             !nl80211_put_txq_stats(msg, &txqstats,
2556                                                    NL80211_ATTR_TXQ_STATS))
2557                                 goto nla_put_failure;
2558
2559                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2560                                         rdev->wiphy.txq_limit))
2561                                 goto nla_put_failure;
2562                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2563                                         rdev->wiphy.txq_memory_limit))
2564                                 goto nla_put_failure;
2565                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2566                                         rdev->wiphy.txq_quantum))
2567                                 goto nla_put_failure;
2568                 }
2569
2570                 state->split_start++;
2571                 break;
2572         case 14:
2573                 if (nl80211_send_pmsr_capa(rdev, msg))
2574                         goto nla_put_failure;
2575
2576                 state->split_start++;
2577                 break;
2578         case 15:
2579                 if (rdev->wiphy.akm_suites &&
2580                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2581                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2582                             rdev->wiphy.akm_suites))
2583                         goto nla_put_failure;
2584
2585                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2586                         goto nla_put_failure;
2587
2588                 if (nl80211_put_tid_config_support(rdev, msg))
2589                         goto nla_put_failure;
2590
2591                 /* done */
2592                 state->split_start = 0;
2593                 break;
2594         }
2595  finish:
2596         genlmsg_end(msg, hdr);
2597         return 0;
2598
2599  nla_put_failure:
2600         genlmsg_cancel(msg, hdr);
2601         return -EMSGSIZE;
2602 }
2603
2604 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2605                                     struct netlink_callback *cb,
2606                                     struct nl80211_dump_wiphy_state *state)
2607 {
2608         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2609         int ret;
2610
2611         if (!tb)
2612                 return -ENOMEM;
2613
2614         ret = nlmsg_parse_deprecated(cb->nlh,
2615                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2616                                      tb, nl80211_fam.maxattr,
2617                                      nl80211_policy, NULL);
2618         /* ignore parse errors for backward compatibility */
2619         if (ret) {
2620                 ret = 0;
2621                 goto out;
2622         }
2623
2624         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2625         if (tb[NL80211_ATTR_WIPHY])
2626                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2627         if (tb[NL80211_ATTR_WDEV])
2628                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2629         if (tb[NL80211_ATTR_IFINDEX]) {
2630                 struct net_device *netdev;
2631                 struct cfg80211_registered_device *rdev;
2632                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2633
2634                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2635                 if (!netdev) {
2636                         ret = -ENODEV;
2637                         goto out;
2638                 }
2639                 if (netdev->ieee80211_ptr) {
2640                         rdev = wiphy_to_rdev(
2641                                 netdev->ieee80211_ptr->wiphy);
2642                         state->filter_wiphy = rdev->wiphy_idx;
2643                 }
2644         }
2645
2646         ret = 0;
2647 out:
2648         kfree(tb);
2649         return ret;
2650 }
2651
2652 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2653 {
2654         int idx = 0, ret;
2655         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2656         struct cfg80211_registered_device *rdev;
2657
2658         rtnl_lock();
2659         if (!state) {
2660                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2661                 if (!state) {
2662                         rtnl_unlock();
2663                         return -ENOMEM;
2664                 }
2665                 state->filter_wiphy = -1;
2666                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2667                 if (ret) {
2668                         kfree(state);
2669                         rtnl_unlock();
2670                         return ret;
2671                 }
2672                 cb->args[0] = (long)state;
2673         }
2674
2675         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2676                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2677                         continue;
2678                 if (++idx <= state->start)
2679                         continue;
2680                 if (state->filter_wiphy != -1 &&
2681                     state->filter_wiphy != rdev->wiphy_idx)
2682                         continue;
2683                 /* attempt to fit multiple wiphy data chunks into the skb */
2684                 do {
2685                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2686                                                  skb,
2687                                                  NETLINK_CB(cb->skb).portid,
2688                                                  cb->nlh->nlmsg_seq,
2689                                                  NLM_F_MULTI, state);
2690                         if (ret < 0) {
2691                                 /*
2692                                  * If sending the wiphy data didn't fit (ENOBUFS
2693                                  * or EMSGSIZE returned), this SKB is still
2694                                  * empty (so it's not too big because another
2695                                  * wiphy dataset is already in the skb) and
2696                                  * we've not tried to adjust the dump allocation
2697                                  * yet ... then adjust the alloc size to be
2698                                  * bigger, and return 1 but with the empty skb.
2699                                  * This results in an empty message being RX'ed
2700                                  * in userspace, but that is ignored.
2701                                  *
2702                                  * We can then retry with the larger buffer.
2703                                  */
2704                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2705                                     !skb->len && !state->split &&
2706                                     cb->min_dump_alloc < 4096) {
2707                                         cb->min_dump_alloc = 4096;
2708                                         state->split_start = 0;
2709                                         rtnl_unlock();
2710                                         return 1;
2711                                 }
2712                                 idx--;
2713                                 break;
2714                         }
2715                 } while (state->split_start > 0);
2716                 break;
2717         }
2718         rtnl_unlock();
2719
2720         state->start = idx;
2721
2722         return skb->len;
2723 }
2724
2725 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2726 {
2727         kfree((void *)cb->args[0]);
2728         return 0;
2729 }
2730
2731 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2732 {
2733         struct sk_buff *msg;
2734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2735         struct nl80211_dump_wiphy_state state = {};
2736
2737         msg = nlmsg_new(4096, GFP_KERNEL);
2738         if (!msg)
2739                 return -ENOMEM;
2740
2741         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2742                                info->snd_portid, info->snd_seq, 0,
2743                                &state) < 0) {
2744                 nlmsg_free(msg);
2745                 return -ENOBUFS;
2746         }
2747
2748         return genlmsg_reply(msg, info);
2749 }
2750
2751 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2752         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2753         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2754         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2755         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2756         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2757 };
2758
2759 static int parse_txq_params(struct nlattr *tb[],
2760                             struct ieee80211_txq_params *txq_params)
2761 {
2762         u8 ac;
2763
2764         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2765             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2766             !tb[NL80211_TXQ_ATTR_AIFS])
2767                 return -EINVAL;
2768
2769         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2770         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2771         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2772         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2773         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2774
2775         if (ac >= NL80211_NUM_ACS)
2776                 return -EINVAL;
2777         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2778         return 0;
2779 }
2780
2781 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2782 {
2783         /*
2784          * You can only set the channel explicitly for WDS interfaces,
2785          * all others have their channel managed via their respective
2786          * "establish a connection" command (connect, join, ...)
2787          *
2788          * For AP/GO and mesh mode, the channel can be set with the
2789          * channel userspace API, but is only stored and passed to the
2790          * low-level driver when the AP starts or the mesh is joined.
2791          * This is for backward compatibility, userspace can also give
2792          * the channel in the start-ap or join-mesh commands instead.
2793          *
2794          * Monitors are special as they are normally slaved to
2795          * whatever else is going on, so they have their own special
2796          * operation to set the monitor channel if possible.
2797          */
2798         return !wdev ||
2799                 wdev->iftype == NL80211_IFTYPE_AP ||
2800                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2801                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2802                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2803 }
2804
2805 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2806                           struct genl_info *info,
2807                           struct cfg80211_chan_def *chandef)
2808 {
2809         struct netlink_ext_ack *extack = info->extack;
2810         struct nlattr **attrs = info->attrs;
2811         u32 control_freq;
2812
2813         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2814                 return -EINVAL;
2815
2816         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2817
2818         memset(chandef, 0, sizeof(*chandef));
2819
2820         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2821         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2822         chandef->center_freq1 = control_freq;
2823         chandef->center_freq2 = 0;
2824
2825         /* Primary channel not allowed */
2826         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2827                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2828                                     "Channel is disabled");
2829                 return -EINVAL;
2830         }
2831
2832         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2833                 enum nl80211_channel_type chantype;
2834
2835                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2836
2837                 switch (chantype) {
2838                 case NL80211_CHAN_NO_HT:
2839                 case NL80211_CHAN_HT20:
2840                 case NL80211_CHAN_HT40PLUS:
2841                 case NL80211_CHAN_HT40MINUS:
2842                         cfg80211_chandef_create(chandef, chandef->chan,
2843                                                 chantype);
2844                         /* user input for center_freq is incorrect */
2845                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2846                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2847                                 NL_SET_ERR_MSG_ATTR(extack,
2848                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2849                                                     "bad center frequency 1");
2850                                 return -EINVAL;
2851                         }
2852                         /* center_freq2 must be zero */
2853                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2854                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2855                                 NL_SET_ERR_MSG_ATTR(extack,
2856                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2857                                                     "center frequency 2 can't be used");
2858                                 return -EINVAL;
2859                         }
2860                         break;
2861                 default:
2862                         NL_SET_ERR_MSG_ATTR(extack,
2863                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2864                                             "invalid channel type");
2865                         return -EINVAL;
2866                 }
2867         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2868                 chandef->width =
2869                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2870                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2871                         chandef->center_freq1 =
2872                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2873                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2874                         chandef->center_freq2 =
2875                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2876         }
2877
2878         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2879                 chandef->edmg.channels =
2880                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2881
2882                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2883                         chandef->edmg.bw_config =
2884                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2885         } else {
2886                 chandef->edmg.bw_config = 0;
2887                 chandef->edmg.channels = 0;
2888         }
2889
2890         if (!cfg80211_chandef_valid(chandef)) {
2891                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2892                 return -EINVAL;
2893         }
2894
2895         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2896                                      IEEE80211_CHAN_DISABLED)) {
2897                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2898                 return -EINVAL;
2899         }
2900
2901         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2902              chandef->width == NL80211_CHAN_WIDTH_10) &&
2903             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2904                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2905                 return -EINVAL;
2906         }
2907
2908         return 0;
2909 }
2910
2911 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2912                                  struct net_device *dev,
2913                                  struct genl_info *info)
2914 {
2915         struct cfg80211_chan_def chandef;
2916         int result;
2917         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2918         struct wireless_dev *wdev = NULL;
2919
2920         if (dev)
2921                 wdev = dev->ieee80211_ptr;
2922         if (!nl80211_can_set_dev_channel(wdev))
2923                 return -EOPNOTSUPP;
2924         if (wdev)
2925                 iftype = wdev->iftype;
2926
2927         result = nl80211_parse_chandef(rdev, info, &chandef);
2928         if (result)
2929                 return result;
2930
2931         switch (iftype) {
2932         case NL80211_IFTYPE_AP:
2933         case NL80211_IFTYPE_P2P_GO:
2934                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2935                                                    iftype)) {
2936                         result = -EINVAL;
2937                         break;
2938                 }
2939                 if (wdev->beacon_interval) {
2940                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2941                             !(rdev->wiphy.features &
2942                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2943                                 result = -EBUSY;
2944                                 break;
2945                         }
2946
2947                         /* Only allow dynamic channel width changes */
2948                         if (chandef.chan != wdev->preset_chandef.chan) {
2949                                 result = -EBUSY;
2950                                 break;
2951                         }
2952                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2953                         if (result)
2954                                 break;
2955                 }
2956                 wdev->preset_chandef = chandef;
2957                 result = 0;
2958                 break;
2959         case NL80211_IFTYPE_MESH_POINT:
2960                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2961                 break;
2962         case NL80211_IFTYPE_MONITOR:
2963                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2964                 break;
2965         default:
2966                 result = -EINVAL;
2967         }
2968
2969         return result;
2970 }
2971
2972 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2973 {
2974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2975         struct net_device *netdev = info->user_ptr[1];
2976
2977         return __nl80211_set_channel(rdev, netdev, info);
2978 }
2979
2980 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2981 {
2982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2983         struct net_device *dev = info->user_ptr[1];
2984         struct wireless_dev *wdev = dev->ieee80211_ptr;
2985         const u8 *bssid;
2986
2987         if (!info->attrs[NL80211_ATTR_MAC])
2988                 return -EINVAL;
2989
2990         if (netif_running(dev))
2991                 return -EBUSY;
2992
2993         if (!rdev->ops->set_wds_peer)
2994                 return -EOPNOTSUPP;
2995
2996         if (wdev->iftype != NL80211_IFTYPE_WDS)
2997                 return -EOPNOTSUPP;
2998
2999         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3000         return rdev_set_wds_peer(rdev, dev, bssid);
3001 }
3002
3003 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3004 {
3005         struct cfg80211_registered_device *rdev;
3006         struct net_device *netdev = NULL;
3007         struct wireless_dev *wdev;
3008         int result = 0, rem_txq_params = 0;
3009         struct nlattr *nl_txq_params;
3010         u32 changed;
3011         u8 retry_short = 0, retry_long = 0;
3012         u32 frag_threshold = 0, rts_threshold = 0;
3013         u8 coverage_class = 0;
3014         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3015
3016         ASSERT_RTNL();
3017
3018         /*
3019          * Try to find the wiphy and netdev. Normally this
3020          * function shouldn't need the netdev, but this is
3021          * done for backward compatibility -- previously
3022          * setting the channel was done per wiphy, but now
3023          * it is per netdev. Previous userland like hostapd
3024          * also passed a netdev to set_wiphy, so that it is
3025          * possible to let that go to the right netdev!
3026          */
3027
3028         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3029                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3030
3031                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3032                 if (netdev && netdev->ieee80211_ptr)
3033                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3034                 else
3035                         netdev = NULL;
3036         }
3037
3038         if (!netdev) {
3039                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3040                                                   info->attrs);
3041                 if (IS_ERR(rdev))
3042                         return PTR_ERR(rdev);
3043                 wdev = NULL;
3044                 netdev = NULL;
3045                 result = 0;
3046         } else
3047                 wdev = netdev->ieee80211_ptr;
3048
3049         /*
3050          * end workaround code, by now the rdev is available
3051          * and locked, and wdev may or may not be NULL.
3052          */
3053
3054         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3055                 result = cfg80211_dev_rename(
3056                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3057
3058         if (result)
3059                 return result;
3060
3061         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3062                 struct ieee80211_txq_params txq_params;
3063                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3064
3065                 if (!rdev->ops->set_txq_params)
3066                         return -EOPNOTSUPP;
3067
3068                 if (!netdev)
3069                         return -EINVAL;
3070
3071                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3072                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3073                         return -EINVAL;
3074
3075                 if (!netif_running(netdev))
3076                         return -ENETDOWN;
3077
3078                 nla_for_each_nested(nl_txq_params,
3079                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3080                                     rem_txq_params) {
3081                         result = nla_parse_nested_deprecated(tb,
3082                                                              NL80211_TXQ_ATTR_MAX,
3083                                                              nl_txq_params,
3084                                                              txq_params_policy,
3085                                                              info->extack);
3086                         if (result)
3087                                 return result;
3088                         result = parse_txq_params(tb, &txq_params);
3089                         if (result)
3090                                 return result;
3091
3092                         result = rdev_set_txq_params(rdev, netdev,
3093                                                      &txq_params);
3094                         if (result)
3095                                 return result;
3096                 }
3097         }
3098
3099         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3100                 result = __nl80211_set_channel(
3101                         rdev,
3102                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3103                         info);
3104                 if (result)
3105                         return result;
3106         }
3107
3108         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3109                 struct wireless_dev *txp_wdev = wdev;
3110                 enum nl80211_tx_power_setting type;
3111                 int idx, mbm = 0;
3112
3113                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3114                         txp_wdev = NULL;
3115
3116                 if (!rdev->ops->set_tx_power)
3117                         return -EOPNOTSUPP;
3118
3119                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3120                 type = nla_get_u32(info->attrs[idx]);
3121
3122                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3123                     (type != NL80211_TX_POWER_AUTOMATIC))
3124                         return -EINVAL;
3125
3126                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3127                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3128                         mbm = nla_get_u32(info->attrs[idx]);
3129                 }
3130
3131                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3132                 if (result)
3133                         return result;
3134         }
3135
3136         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3137             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3138                 u32 tx_ant, rx_ant;
3139
3140                 if ((!rdev->wiphy.available_antennas_tx &&
3141                      !rdev->wiphy.available_antennas_rx) ||
3142                     !rdev->ops->set_antenna)
3143                         return -EOPNOTSUPP;
3144
3145                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3146                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3147
3148                 /* reject antenna configurations which don't match the
3149                  * available antenna masks, except for the "all" mask */
3150                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3151                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3152                         return -EINVAL;
3153
3154                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3155                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3156
3157                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3158                 if (result)
3159                         return result;
3160         }
3161
3162         changed = 0;
3163
3164         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3165                 retry_short = nla_get_u8(
3166                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3167
3168                 changed |= WIPHY_PARAM_RETRY_SHORT;
3169         }
3170
3171         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3172                 retry_long = nla_get_u8(
3173                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3174
3175                 changed |= WIPHY_PARAM_RETRY_LONG;
3176         }
3177
3178         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3179                 frag_threshold = nla_get_u32(
3180                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3181                 if (frag_threshold < 256)
3182                         return -EINVAL;
3183
3184                 if (frag_threshold != (u32) -1) {
3185                         /*
3186                          * Fragments (apart from the last one) are required to
3187                          * have even length. Make the fragmentation code
3188                          * simpler by stripping LSB should someone try to use
3189                          * odd threshold value.
3190                          */
3191                         frag_threshold &= ~0x1;
3192                 }
3193                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3194         }
3195
3196         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3197                 rts_threshold = nla_get_u32(
3198                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3199                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3200         }
3201
3202         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3203                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3204                         return -EINVAL;
3205
3206                 coverage_class = nla_get_u8(
3207                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3208                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3209         }
3210
3211         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3212                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3213                         return -EOPNOTSUPP;
3214
3215                 changed |= WIPHY_PARAM_DYN_ACK;
3216         }
3217
3218         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3219                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3220                                              NL80211_EXT_FEATURE_TXQS))
3221                         return -EOPNOTSUPP;
3222                 txq_limit = nla_get_u32(
3223                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3224                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3225         }
3226
3227         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3228                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3229                                              NL80211_EXT_FEATURE_TXQS))
3230                         return -EOPNOTSUPP;
3231                 txq_memory_limit = nla_get_u32(
3232                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3233                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3234         }
3235
3236         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3237                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3238                                              NL80211_EXT_FEATURE_TXQS))
3239                         return -EOPNOTSUPP;
3240                 txq_quantum = nla_get_u32(
3241                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3242                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3243         }
3244
3245         if (changed) {
3246                 u8 old_retry_short, old_retry_long;
3247                 u32 old_frag_threshold, old_rts_threshold;
3248                 u8 old_coverage_class;
3249                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3250
3251                 if (!rdev->ops->set_wiphy_params)
3252                         return -EOPNOTSUPP;
3253
3254                 old_retry_short = rdev->wiphy.retry_short;
3255                 old_retry_long = rdev->wiphy.retry_long;
3256                 old_frag_threshold = rdev->wiphy.frag_threshold;
3257                 old_rts_threshold = rdev->wiphy.rts_threshold;
3258                 old_coverage_class = rdev->wiphy.coverage_class;
3259                 old_txq_limit = rdev->wiphy.txq_limit;
3260                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3261                 old_txq_quantum = rdev->wiphy.txq_quantum;
3262
3263                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3264                         rdev->wiphy.retry_short = retry_short;
3265                 if (changed & WIPHY_PARAM_RETRY_LONG)
3266                         rdev->wiphy.retry_long = retry_long;
3267                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3268                         rdev->wiphy.frag_threshold = frag_threshold;
3269                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3270                         rdev->wiphy.rts_threshold = rts_threshold;
3271                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3272                         rdev->wiphy.coverage_class = coverage_class;
3273                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3274                         rdev->wiphy.txq_limit = txq_limit;
3275                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3276                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3277                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3278                         rdev->wiphy.txq_quantum = txq_quantum;
3279
3280                 result = rdev_set_wiphy_params(rdev, changed);
3281                 if (result) {
3282                         rdev->wiphy.retry_short = old_retry_short;
3283                         rdev->wiphy.retry_long = old_retry_long;
3284                         rdev->wiphy.frag_threshold = old_frag_threshold;
3285                         rdev->wiphy.rts_threshold = old_rts_threshold;
3286                         rdev->wiphy.coverage_class = old_coverage_class;
3287                         rdev->wiphy.txq_limit = old_txq_limit;
3288                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3289                         rdev->wiphy.txq_quantum = old_txq_quantum;
3290                         return result;
3291                 }
3292         }
3293         return 0;
3294 }
3295
3296 static int nl80211_send_chandef(struct sk_buff *msg,
3297                                 const struct cfg80211_chan_def *chandef)
3298 {
3299         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3300                 return -EINVAL;
3301
3302         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3303                         chandef->chan->center_freq))
3304                 return -ENOBUFS;
3305         switch (chandef->width) {
3306         case NL80211_CHAN_WIDTH_20_NOHT:
3307         case NL80211_CHAN_WIDTH_20:
3308         case NL80211_CHAN_WIDTH_40:
3309                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3310                                 cfg80211_get_chandef_type(chandef)))
3311                         return -ENOBUFS;
3312                 break;
3313         default:
3314                 break;
3315         }
3316         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3317                 return -ENOBUFS;
3318         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3319                 return -ENOBUFS;
3320         if (chandef->center_freq2 &&
3321             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3322                 return -ENOBUFS;
3323         return 0;
3324 }
3325
3326 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3327                               struct cfg80211_registered_device *rdev,
3328                               struct wireless_dev *wdev,
3329                               enum nl80211_commands cmd)
3330 {
3331         struct net_device *dev = wdev->netdev;
3332         void *hdr;
3333
3334         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3335                 cmd != NL80211_CMD_DEL_INTERFACE &&
3336                 cmd != NL80211_CMD_SET_INTERFACE);
3337
3338         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3339         if (!hdr)
3340                 return -1;
3341
3342         if (dev &&
3343             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3344              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3345                 goto nla_put_failure;
3346
3347         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3348             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3349             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3350                               NL80211_ATTR_PAD) ||
3351             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3352             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3353                         rdev->devlist_generation ^
3354                         (cfg80211_rdev_list_generation << 2)) ||
3355             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3356                 goto nla_put_failure;
3357
3358         if (rdev->ops->get_channel) {
3359                 int ret;
3360                 struct cfg80211_chan_def chandef = {};
3361
3362                 ret = rdev_get_channel(rdev, wdev, &chandef);
3363                 if (ret == 0) {
3364                         if (nl80211_send_chandef(msg, &chandef))
3365                                 goto nla_put_failure;
3366                 }
3367         }
3368
3369         if (rdev->ops->get_tx_power) {
3370                 int dbm, ret;
3371
3372                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3373                 if (ret == 0 &&
3374                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3375                                 DBM_TO_MBM(dbm)))
3376                         goto nla_put_failure;
3377         }
3378
3379         wdev_lock(wdev);
3380         switch (wdev->iftype) {
3381         case NL80211_IFTYPE_AP:
3382                 if (wdev->ssid_len &&
3383                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3384                         goto nla_put_failure_locked;
3385                 break;
3386         case NL80211_IFTYPE_STATION:
3387         case NL80211_IFTYPE_P2P_CLIENT:
3388         case NL80211_IFTYPE_ADHOC: {
3389                 const u8 *ssid_ie;
3390                 if (!wdev->current_bss)
3391                         break;
3392                 rcu_read_lock();
3393                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3394                                                WLAN_EID_SSID);
3395                 if (ssid_ie &&
3396                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3397                         goto nla_put_failure_rcu_locked;
3398                 rcu_read_unlock();
3399                 break;
3400                 }
3401         default:
3402                 /* nothing */
3403                 break;
3404         }
3405         wdev_unlock(wdev);
3406
3407         if (rdev->ops->get_txq_stats) {
3408                 struct cfg80211_txq_stats txqstats = {};
3409                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3410
3411                 if (ret == 0 &&
3412                     !nl80211_put_txq_stats(msg, &txqstats,
3413                                            NL80211_ATTR_TXQ_STATS))
3414                         goto nla_put_failure;
3415         }
3416
3417         genlmsg_end(msg, hdr);
3418         return 0;
3419
3420  nla_put_failure_rcu_locked:
3421         rcu_read_unlock();
3422  nla_put_failure_locked:
3423         wdev_unlock(wdev);
3424  nla_put_failure:
3425         genlmsg_cancel(msg, hdr);
3426         return -EMSGSIZE;
3427 }
3428
3429 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3430 {
3431         int wp_idx = 0;
3432         int if_idx = 0;
3433         int wp_start = cb->args[0];
3434         int if_start = cb->args[1];
3435         int filter_wiphy = -1;
3436         struct cfg80211_registered_device *rdev;
3437         struct wireless_dev *wdev;
3438         int ret;
3439
3440         rtnl_lock();
3441         if (!cb->args[2]) {
3442                 struct nl80211_dump_wiphy_state state = {
3443                         .filter_wiphy = -1,
3444                 };
3445
3446                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3447                 if (ret)
3448                         goto out_unlock;
3449
3450                 filter_wiphy = state.filter_wiphy;
3451
3452                 /*
3453                  * if filtering, set cb->args[2] to +1 since 0 is the default
3454                  * value needed to determine that parsing is necessary.
3455                  */
3456                 if (filter_wiphy >= 0)
3457                         cb->args[2] = filter_wiphy + 1;
3458                 else
3459                         cb->args[2] = -1;
3460         } else if (cb->args[2] > 0) {
3461                 filter_wiphy = cb->args[2] - 1;
3462         }
3463
3464         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3465                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3466                         continue;
3467                 if (wp_idx < wp_start) {
3468                         wp_idx++;
3469                         continue;
3470                 }
3471
3472                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3473                         continue;
3474
3475                 if_idx = 0;
3476
3477                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3478                         if (if_idx < if_start) {
3479                                 if_idx++;
3480                                 continue;
3481                         }
3482                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3483                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3484                                                rdev, wdev,
3485                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3486                                 goto out;
3487                         }
3488                         if_idx++;
3489                 }
3490
3491                 wp_idx++;
3492         }
3493  out:
3494         cb->args[0] = wp_idx;
3495         cb->args[1] = if_idx;
3496
3497         ret = skb->len;
3498  out_unlock:
3499         rtnl_unlock();
3500
3501         return ret;
3502 }
3503
3504 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3505 {
3506         struct sk_buff *msg;
3507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3508         struct wireless_dev *wdev = info->user_ptr[1];
3509
3510         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3511         if (!msg)
3512                 return -ENOMEM;
3513
3514         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3515                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3516                 nlmsg_free(msg);
3517                 return -ENOBUFS;
3518         }
3519
3520         return genlmsg_reply(msg, info);
3521 }
3522
3523 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3524         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3525         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3526         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3527         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3528         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3529         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3530 };
3531
3532 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3533 {
3534         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3535         int flag;
3536
3537         *mntrflags = 0;
3538
3539         if (!nla)
3540                 return -EINVAL;
3541
3542         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3543                 return -EINVAL;
3544
3545         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3546                 if (flags[flag])
3547                         *mntrflags |= (1<<flag);
3548
3549         *mntrflags |= MONITOR_FLAG_CHANGED;
3550
3551         return 0;
3552 }
3553
3554 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3555                                      enum nl80211_iftype type,
3556                                      struct genl_info *info,
3557                                      struct vif_params *params)
3558 {
3559         bool change = false;
3560         int err;
3561
3562         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3563                 if (type != NL80211_IFTYPE_MONITOR)
3564                         return -EINVAL;
3565
3566                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3567                                           &params->flags);
3568                 if (err)
3569                         return err;
3570
3571                 change = true;
3572         }
3573
3574         if (params->flags & MONITOR_FLAG_ACTIVE &&
3575             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3576                 return -EOPNOTSUPP;
3577
3578         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3579                 const u8 *mumimo_groups;
3580                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3581
3582                 if (type != NL80211_IFTYPE_MONITOR)
3583                         return -EINVAL;
3584
3585                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3586                         return -EOPNOTSUPP;
3587
3588                 mumimo_groups =
3589                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3590
3591                 /* bits 0 and 63 are reserved and must be zero */
3592                 if ((mumimo_groups[0] & BIT(0)) ||
3593                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3594                         return -EINVAL;
3595
3596                 params->vht_mumimo_groups = mumimo_groups;
3597                 change = true;
3598         }
3599
3600         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3601                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3602
3603                 if (type != NL80211_IFTYPE_MONITOR)
3604                         return -EINVAL;
3605
3606                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3607                         return -EOPNOTSUPP;
3608
3609                 params->vht_mumimo_follow_addr =
3610                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3611                 change = true;
3612         }
3613
3614         return change ? 1 : 0;
3615 }
3616
3617 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3618                                struct net_device *netdev, u8 use_4addr,
3619                                enum nl80211_iftype iftype)
3620 {
3621         if (!use_4addr) {
3622                 if (netdev && netif_is_bridge_port(netdev))
3623                         return -EBUSY;
3624                 return 0;
3625         }
3626
3627         switch (iftype) {
3628         case NL80211_IFTYPE_AP_VLAN:
3629                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3630                         return 0;
3631                 break;
3632         case NL80211_IFTYPE_STATION:
3633                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3634                         return 0;
3635                 break;
3636         default:
3637                 break;
3638         }
3639
3640         return -EOPNOTSUPP;
3641 }
3642
3643 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3644 {
3645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3646         struct vif_params params;
3647         int err;
3648         enum nl80211_iftype otype, ntype;
3649         struct net_device *dev = info->user_ptr[1];
3650         bool change = false;
3651
3652         memset(&params, 0, sizeof(params));
3653
3654         otype = ntype = dev->ieee80211_ptr->iftype;
3655
3656         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3657                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3658                 if (otype != ntype)
3659                         change = true;
3660         }
3661
3662         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3663                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3664
3665                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3666                         return -EINVAL;
3667                 if (netif_running(dev))
3668                         return -EBUSY;
3669
3670                 wdev_lock(wdev);
3671                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3672                              IEEE80211_MAX_MESH_ID_LEN);
3673                 wdev->mesh_id_up_len =
3674                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3675                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3676                        wdev->mesh_id_up_len);
3677                 wdev_unlock(wdev);
3678         }
3679
3680         if (info->attrs[NL80211_ATTR_4ADDR]) {
3681                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3682                 change = true;
3683                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3684                 if (err)
3685                         return err;
3686         } else {
3687                 params.use_4addr = -1;
3688         }
3689
3690         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3691         if (err < 0)
3692                 return err;
3693         if (err > 0)
3694                 change = true;
3695
3696         if (change)
3697                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3698         else
3699                 err = 0;
3700
3701         if (!err && params.use_4addr != -1)
3702                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3703
3704         if (change && !err) {
3705                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3706
3707                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3708         }
3709
3710         return err;
3711 }
3712
3713 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3714 {
3715         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3716         struct vif_params params;
3717         struct wireless_dev *wdev;
3718         struct sk_buff *msg;
3719         int err;
3720         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3721
3722         /* to avoid failing a new interface creation due to pending removal */
3723         cfg80211_destroy_ifaces(rdev);
3724
3725         memset(&params, 0, sizeof(params));
3726
3727         if (!info->attrs[NL80211_ATTR_IFNAME])
3728                 return -EINVAL;
3729
3730         if (info->attrs[NL80211_ATTR_IFTYPE])
3731                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3732
3733         if (!rdev->ops->add_virtual_intf)
3734                 return -EOPNOTSUPP;
3735
3736         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3737              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3738             info->attrs[NL80211_ATTR_MAC]) {
3739                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3740                            ETH_ALEN);
3741                 if (!is_valid_ether_addr(params.macaddr))
3742                         return -EADDRNOTAVAIL;
3743         }
3744
3745         if (info->attrs[NL80211_ATTR_4ADDR]) {
3746                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3747                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3748                 if (err)
3749                         return err;
3750         }
3751
3752         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3753                 return -EOPNOTSUPP;
3754
3755         err = nl80211_parse_mon_options(rdev, type, info, &params);
3756         if (err < 0)
3757                 return err;
3758
3759         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3760         if (!msg)
3761                 return -ENOMEM;
3762
3763         wdev = rdev_add_virtual_intf(rdev,
3764                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3765                                 NET_NAME_USER, type, &params);
3766         if (WARN_ON(!wdev)) {
3767                 nlmsg_free(msg);
3768                 return -EPROTO;
3769         } else if (IS_ERR(wdev)) {
3770                 nlmsg_free(msg);
3771                 return PTR_ERR(wdev);
3772         }
3773
3774         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3775                 wdev->owner_nlportid = info->snd_portid;
3776
3777         switch (type) {
3778         case NL80211_IFTYPE_MESH_POINT:
3779                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3780                         break;
3781                 wdev_lock(wdev);
3782                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3783                              IEEE80211_MAX_MESH_ID_LEN);
3784                 wdev->mesh_id_up_len =
3785                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3786                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3787                        wdev->mesh_id_up_len);
3788                 wdev_unlock(wdev);
3789                 break;
3790         case NL80211_IFTYPE_NAN:
3791         case NL80211_IFTYPE_P2P_DEVICE:
3792                 /*
3793                  * P2P Device and NAN do not have a netdev, so don't go
3794                  * through the netdev notifier and must be added here
3795                  */
3796                 cfg80211_init_wdev(rdev, wdev);
3797                 break;
3798         default:
3799                 break;
3800         }
3801
3802         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3803                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3804                 nlmsg_free(msg);
3805                 return -ENOBUFS;
3806         }
3807
3808         return genlmsg_reply(msg, info);
3809 }
3810
3811 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3812 {
3813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3814         struct wireless_dev *wdev = info->user_ptr[1];
3815
3816         if (!rdev->ops->del_virtual_intf)
3817                 return -EOPNOTSUPP;
3818
3819         /*
3820          * If we remove a wireless device without a netdev then clear
3821          * user_ptr[1] so that nl80211_post_doit won't dereference it
3822          * to check if it needs to do dev_put(). Otherwise it crashes
3823          * since the wdev has been freed, unlike with a netdev where
3824          * we need the dev_put() for the netdev to really be freed.
3825          */
3826         if (!wdev->netdev)
3827                 info->user_ptr[1] = NULL;
3828
3829         return rdev_del_virtual_intf(rdev, wdev);
3830 }
3831
3832 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3833 {
3834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3835         struct net_device *dev = info->user_ptr[1];
3836         u16 noack_map;
3837
3838         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3839                 return -EINVAL;
3840
3841         if (!rdev->ops->set_noack_map)
3842                 return -EOPNOTSUPP;
3843
3844         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3845
3846         return rdev_set_noack_map(rdev, dev, noack_map);
3847 }
3848
3849 struct get_key_cookie {
3850         struct sk_buff *msg;
3851         int error;
3852         int idx;
3853 };
3854
3855 static void get_key_callback(void *c, struct key_params *params)
3856 {
3857         struct nlattr *key;
3858         struct get_key_cookie *cookie = c;
3859
3860         if ((params->key &&
3861              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3862                      params->key_len, params->key)) ||
3863             (params->seq &&
3864              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3865                      params->seq_len, params->seq)) ||
3866             (params->cipher &&
3867              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3868                          params->cipher)))
3869                 goto nla_put_failure;
3870
3871         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3872         if (!key)
3873                 goto nla_put_failure;
3874
3875         if ((params->key &&
3876              nla_put(cookie->msg, NL80211_KEY_DATA,
3877                      params->key_len, params->key)) ||
3878             (params->seq &&
3879              nla_put(cookie->msg, NL80211_KEY_SEQ,
3880                      params->seq_len, params->seq)) ||
3881             (params->cipher &&
3882              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3883                          params->cipher)))
3884                 goto nla_put_failure;
3885
3886         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3887                 goto nla_put_failure;
3888
3889         nla_nest_end(cookie->msg, key);
3890
3891         return;
3892  nla_put_failure:
3893         cookie->error = 1;
3894 }
3895
3896 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3897 {
3898         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3899         int err;
3900         struct net_device *dev = info->user_ptr[1];
3901         u8 key_idx = 0;
3902         const u8 *mac_addr = NULL;
3903         bool pairwise;
3904         struct get_key_cookie cookie = {
3905                 .error = 0,
3906         };
3907         void *hdr;
3908         struct sk_buff *msg;
3909
3910         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3911                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3912                 if (key_idx > 5 &&
3913                     !wiphy_ext_feature_isset(
3914                             &rdev->wiphy,
3915                             NL80211_EXT_FEATURE_BEACON_PROTECTION))
3916                         return -EINVAL;
3917         }
3918
3919         if (info->attrs[NL80211_ATTR_MAC])
3920                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3921
3922         pairwise = !!mac_addr;
3923         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3924                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3925
3926                 if (kt != NL80211_KEYTYPE_GROUP &&
3927                     kt != NL80211_KEYTYPE_PAIRWISE)
3928                         return -EINVAL;
3929                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3930         }
3931
3932         if (!rdev->ops->get_key)
3933                 return -EOPNOTSUPP;
3934
3935         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3936                 return -ENOENT;
3937
3938         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3939         if (!msg)
3940                 return -ENOMEM;
3941
3942         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3943                              NL80211_CMD_NEW_KEY);
3944         if (!hdr)
3945                 goto nla_put_failure;
3946
3947         cookie.msg = msg;
3948         cookie.idx = key_idx;
3949
3950         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3951             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3952                 goto nla_put_failure;
3953         if (mac_addr &&
3954             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3955                 goto nla_put_failure;
3956
3957         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3958                            get_key_callback);
3959
3960         if (err)
3961                 goto free_msg;
3962
3963         if (cookie.error)
3964                 goto nla_put_failure;
3965
3966         genlmsg_end(msg, hdr);
3967         return genlmsg_reply(msg, info);
3968
3969  nla_put_failure:
3970         err = -ENOBUFS;
3971  free_msg:
3972         nlmsg_free(msg);
3973         return err;
3974 }
3975
3976 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3977 {
3978         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3979         struct key_parse key;
3980         int err;
3981         struct net_device *dev = info->user_ptr[1];
3982
3983         err = nl80211_parse_key(info, &key);
3984         if (err)
3985                 return err;
3986
3987         if (key.idx < 0)
3988                 return -EINVAL;
3989
3990         /* Only support setting default key and
3991          * Extended Key ID action NL80211_KEY_SET_TX.
3992          */
3993         if (!key.def && !key.defmgmt && !key.defbeacon &&
3994             !(key.p.mode == NL80211_KEY_SET_TX))
3995                 return -EINVAL;
3996
3997         wdev_lock(dev->ieee80211_ptr);
3998
3999         if (key.def) {
4000                 if (!rdev->ops->set_default_key) {
4001                         err = -EOPNOTSUPP;
4002                         goto out;
4003                 }
4004
4005                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4006                 if (err)
4007                         goto out;
4008
4009                 err = rdev_set_default_key(rdev, dev, key.idx,
4010                                                  key.def_uni, key.def_multi);
4011
4012                 if (err)
4013                         goto out;
4014
4015 #ifdef CONFIG_CFG80211_WEXT
4016                 dev->ieee80211_ptr->wext.default_key = key.idx;
4017 #endif
4018         } else if (key.defmgmt) {
4019                 if (key.def_uni || !key.def_multi) {
4020                         err = -EINVAL;
4021                         goto out;
4022                 }
4023
4024                 if (!rdev->ops->set_default_mgmt_key) {
4025                         err = -EOPNOTSUPP;
4026                         goto out;
4027                 }
4028
4029                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4030                 if (err)
4031                         goto out;
4032
4033                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4034                 if (err)
4035                         goto out;
4036
4037 #ifdef CONFIG_CFG80211_WEXT
4038                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4039 #endif
4040         } else if (key.defbeacon) {
4041                 if (key.def_uni || !key.def_multi) {
4042                         err = -EINVAL;
4043                         goto out;
4044                 }
4045
4046                 if (!rdev->ops->set_default_beacon_key) {
4047                         err = -EOPNOTSUPP;
4048                         goto out;
4049                 }
4050
4051                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4052                 if (err)
4053                         goto out;
4054
4055                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4056                 if (err)
4057                         goto out;
4058         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4059                    wiphy_ext_feature_isset(&rdev->wiphy,
4060                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4061                 u8 *mac_addr = NULL;
4062
4063                 if (info->attrs[NL80211_ATTR_MAC])
4064                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4065
4066                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4067                         err = -EINVAL;
4068                         goto out;
4069                 }
4070
4071                 err = rdev_add_key(rdev, dev, key.idx,
4072                                    NL80211_KEYTYPE_PAIRWISE,
4073                                    mac_addr, &key.p);
4074         } else {
4075                 err = -EINVAL;
4076         }
4077  out:
4078         wdev_unlock(dev->ieee80211_ptr);
4079
4080         return err;
4081 }
4082
4083 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4084 {
4085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4086         int err;
4087         struct net_device *dev = info->user_ptr[1];
4088         struct key_parse key;
4089         const u8 *mac_addr = NULL;
4090
4091         err = nl80211_parse_key(info, &key);
4092         if (err)
4093                 return err;
4094
4095         if (!key.p.key) {
4096                 GENL_SET_ERR_MSG(info, "no key");
4097                 return -EINVAL;
4098         }
4099
4100         if (info->attrs[NL80211_ATTR_MAC])
4101                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4102
4103         if (key.type == -1) {
4104                 if (mac_addr)
4105                         key.type = NL80211_KEYTYPE_PAIRWISE;
4106                 else
4107                         key.type = NL80211_KEYTYPE_GROUP;
4108         }
4109
4110         /* for now */
4111         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4112             key.type != NL80211_KEYTYPE_GROUP) {
4113                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4114                 return -EINVAL;
4115         }
4116
4117         if (key.type == NL80211_KEYTYPE_GROUP &&
4118             info->attrs[NL80211_ATTR_VLAN_ID])
4119                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4120
4121         if (!rdev->ops->add_key)
4122                 return -EOPNOTSUPP;
4123
4124         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4125                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4126                                            mac_addr)) {
4127                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4128                 return -EINVAL;
4129         }
4130
4131         wdev_lock(dev->ieee80211_ptr);
4132         err = nl80211_key_allowed(dev->ieee80211_ptr);
4133         if (err)
4134                 GENL_SET_ERR_MSG(info, "key not allowed");
4135         if (!err) {
4136                 err = rdev_add_key(rdev, dev, key.idx,
4137                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4138                                     mac_addr, &key.p);
4139                 if (err)
4140                         GENL_SET_ERR_MSG(info, "key addition failed");
4141         }
4142         wdev_unlock(dev->ieee80211_ptr);
4143
4144         return err;
4145 }
4146
4147 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4148 {
4149         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4150         int err;
4151         struct net_device *dev = info->user_ptr[1];
4152         u8 *mac_addr = NULL;
4153         struct key_parse key;
4154
4155         err = nl80211_parse_key(info, &key);
4156         if (err)
4157                 return err;
4158
4159         if (info->attrs[NL80211_ATTR_MAC])
4160                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4161
4162         if (key.type == -1) {
4163                 if (mac_addr)
4164                         key.type = NL80211_KEYTYPE_PAIRWISE;
4165                 else
4166                         key.type = NL80211_KEYTYPE_GROUP;
4167         }
4168
4169         /* for now */
4170         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4171             key.type != NL80211_KEYTYPE_GROUP)
4172                 return -EINVAL;
4173
4174         if (!rdev->ops->del_key)
4175                 return -EOPNOTSUPP;
4176
4177         wdev_lock(dev->ieee80211_ptr);
4178         err = nl80211_key_allowed(dev->ieee80211_ptr);
4179
4180         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4181             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4182                 err = -ENOENT;
4183
4184         if (!err)
4185                 err = rdev_del_key(rdev, dev, key.idx,
4186                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4187                                    mac_addr);
4188
4189 #ifdef CONFIG_CFG80211_WEXT
4190         if (!err) {
4191                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4192                         dev->ieee80211_ptr->wext.default_key = -1;
4193                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4194                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4195         }
4196 #endif
4197         wdev_unlock(dev->ieee80211_ptr);
4198
4199         return err;
4200 }
4201
4202 /* This function returns an error or the number of nested attributes */
4203 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4204 {
4205         struct nlattr *attr;
4206         int n_entries = 0, tmp;
4207
4208         nla_for_each_nested(attr, nl_attr, tmp) {
4209                 if (nla_len(attr) != ETH_ALEN)
4210                         return -EINVAL;
4211
4212                 n_entries++;
4213         }
4214
4215         return n_entries;
4216 }
4217
4218 /*
4219  * This function parses ACL information and allocates memory for ACL data.
4220  * On successful return, the calling function is responsible to free the
4221  * ACL buffer returned by this function.
4222  */
4223 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4224                                                 struct genl_info *info)
4225 {
4226         enum nl80211_acl_policy acl_policy;
4227         struct nlattr *attr;
4228         struct cfg80211_acl_data *acl;
4229         int i = 0, n_entries, tmp;
4230
4231         if (!wiphy->max_acl_mac_addrs)
4232                 return ERR_PTR(-EOPNOTSUPP);
4233
4234         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4235                 return ERR_PTR(-EINVAL);
4236
4237         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4238         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4239             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4240                 return ERR_PTR(-EINVAL);
4241
4242         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4243                 return ERR_PTR(-EINVAL);
4244
4245         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4246         if (n_entries < 0)
4247                 return ERR_PTR(n_entries);
4248
4249         if (n_entries > wiphy->max_acl_mac_addrs)
4250                 return ERR_PTR(-ENOTSUPP);
4251
4252         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4253         if (!acl)
4254                 return ERR_PTR(-ENOMEM);
4255
4256         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4257                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4258                 i++;
4259         }
4260
4261         acl->n_acl_entries = n_entries;
4262         acl->acl_policy = acl_policy;
4263
4264         return acl;
4265 }
4266
4267 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4268 {
4269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4270         struct net_device *dev = info->user_ptr[1];
4271         struct cfg80211_acl_data *acl;
4272         int err;
4273
4274         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4275             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4276                 return -EOPNOTSUPP;
4277
4278         if (!dev->ieee80211_ptr->beacon_interval)
4279                 return -EINVAL;
4280
4281         acl = parse_acl_data(&rdev->wiphy, info);
4282         if (IS_ERR(acl))
4283                 return PTR_ERR(acl);
4284
4285         err = rdev_set_mac_acl(rdev, dev, acl);
4286
4287         kfree(acl);
4288
4289         return err;
4290 }
4291
4292 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4293                            u8 *rates, u8 rates_len)
4294 {
4295         u8 i;
4296         u32 mask = 0;
4297
4298         for (i = 0; i < rates_len; i++) {
4299                 int rate = (rates[i] & 0x7f) * 5;
4300                 int ridx;
4301
4302                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4303                         struct ieee80211_rate *srate =
4304                                 &sband->bitrates[ridx];
4305                         if (rate == srate->bitrate) {
4306                                 mask |= 1 << ridx;
4307                                 break;
4308                         }
4309                 }
4310                 if (ridx == sband->n_bitrates)
4311                         return 0; /* rate not found */
4312         }
4313
4314         return mask;
4315 }
4316
4317 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4318                                u8 *rates, u8 rates_len,
4319                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4320 {
4321         u8 i;
4322
4323         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4324
4325         for (i = 0; i < rates_len; i++) {
4326                 int ridx, rbit;
4327
4328                 ridx = rates[i] / 8;
4329                 rbit = BIT(rates[i] % 8);
4330
4331                 /* check validity */
4332                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4333                         return false;
4334
4335                 /* check availability */
4336                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4337                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4338                         mcs[ridx] |= rbit;
4339                 else
4340                         return false;
4341         }
4342
4343         return true;
4344 }
4345
4346 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4347 {
4348         u16 mcs_mask = 0;
4349
4350         switch (vht_mcs_map) {
4351         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4352                 break;
4353         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4354                 mcs_mask = 0x00FF;
4355                 break;
4356         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4357                 mcs_mask = 0x01FF;
4358                 break;
4359         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4360                 mcs_mask = 0x03FF;
4361                 break;
4362         default:
4363                 break;
4364         }
4365
4366         return mcs_mask;
4367 }
4368
4369 static void vht_build_mcs_mask(u16 vht_mcs_map,
4370                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4371 {
4372         u8 nss;
4373
4374         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4375                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4376                 vht_mcs_map >>= 2;
4377         }
4378 }
4379
4380 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4381                              struct nl80211_txrate_vht *txrate,
4382                              u16 mcs[NL80211_VHT_NSS_MAX])
4383 {
4384         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4385         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4386         u8 i;
4387
4388         if (!sband->vht_cap.vht_supported)
4389                 return false;
4390
4391         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4392
4393         /* Build vht_mcs_mask from VHT capabilities */
4394         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4395
4396         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4397                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4398                         mcs[i] = txrate->mcs[i];
4399                 else
4400                         return false;
4401         }
4402
4403         return true;
4404 }
4405
4406 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4407         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4408                                     .len = NL80211_MAX_SUPP_RATES },
4409         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4410                                 .len = NL80211_MAX_SUPP_HT_RATES },
4411         [NL80211_TXRATE_VHT] = {
4412                 .type = NLA_EXACT_LEN_WARN,
4413                 .len = sizeof(struct nl80211_txrate_vht),
4414         },
4415         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4416 };
4417
4418 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4419                                          struct cfg80211_bitrate_mask *mask)
4420 {
4421         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4423         int rem, i;
4424         struct nlattr *tx_rates;
4425         struct ieee80211_supported_band *sband;
4426         u16 vht_tx_mcs_map;
4427
4428         memset(mask, 0, sizeof(*mask));
4429         /* Default to all rates enabled */
4430         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4431                 sband = rdev->wiphy.bands[i];
4432
4433                 if (!sband)
4434                         continue;
4435
4436                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4437                 memcpy(mask->control[i].ht_mcs,
4438                        sband->ht_cap.mcs.rx_mask,
4439                        sizeof(mask->control[i].ht_mcs));
4440
4441                 if (!sband->vht_cap.vht_supported)
4442                         continue;
4443
4444                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4445                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4446         }
4447
4448         /* if no rates are given set it back to the defaults */
4449         if (!info->attrs[NL80211_ATTR_TX_RATES])
4450                 goto out;
4451
4452         /* The nested attribute uses enum nl80211_band as the index. This maps
4453          * directly to the enum nl80211_band values used in cfg80211.
4454          */
4455         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4456         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4457                 enum nl80211_band band = nla_type(tx_rates);
4458                 int err;
4459
4460                 if (band < 0 || band >= NUM_NL80211_BANDS)
4461                         return -EINVAL;
4462                 sband = rdev->wiphy.bands[band];
4463                 if (sband == NULL)
4464                         return -EINVAL;
4465                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4466                                                   tx_rates,
4467                                                   nl80211_txattr_policy,
4468                                                   info->extack);
4469                 if (err)
4470                         return err;
4471                 if (tb[NL80211_TXRATE_LEGACY]) {
4472                         mask->control[band].legacy = rateset_to_mask(
4473                                 sband,
4474                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4475                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4476                         if ((mask->control[band].legacy == 0) &&
4477                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4478                                 return -EINVAL;
4479                 }
4480                 if (tb[NL80211_TXRATE_HT]) {
4481                         if (!ht_rateset_to_mask(
4482                                         sband,
4483                                         nla_data(tb[NL80211_TXRATE_HT]),
4484                                         nla_len(tb[NL80211_TXRATE_HT]),
4485                                         mask->control[band].ht_mcs))
4486                                 return -EINVAL;
4487                 }
4488                 if (tb[NL80211_TXRATE_VHT]) {
4489                         if (!vht_set_mcs_mask(
4490                                         sband,
4491                                         nla_data(tb[NL80211_TXRATE_VHT]),
4492                                         mask->control[band].vht_mcs))
4493                                 return -EINVAL;
4494                 }
4495                 if (tb[NL80211_TXRATE_GI]) {
4496                         mask->control[band].gi =
4497                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4498                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4499                                 return -EINVAL;
4500                 }
4501
4502                 if (mask->control[band].legacy == 0) {
4503                         /* don't allow empty legacy rates if HT or VHT
4504                          * are not even supported.
4505                          */
4506                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4507                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4508                                 return -EINVAL;
4509
4510                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4511                                 if (mask->control[band].ht_mcs[i])
4512                                         goto out;
4513
4514                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4515                                 if (mask->control[band].vht_mcs[i])
4516                                         goto out;
4517
4518                         /* legacy and mcs rates may not be both empty */
4519                         return -EINVAL;
4520                 }
4521         }
4522
4523 out:
4524         return 0;
4525 }
4526
4527 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4528                                    enum nl80211_band band,
4529                                    struct cfg80211_bitrate_mask *beacon_rate)
4530 {
4531         u32 count_ht, count_vht, i;
4532         u32 rate = beacon_rate->control[band].legacy;
4533
4534         /* Allow only one rate */
4535         if (hweight32(rate) > 1)
4536                 return -EINVAL;
4537
4538         count_ht = 0;
4539         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4540                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4541                         return -EINVAL;
4542                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4543                         count_ht++;
4544                         if (count_ht > 1)
4545                                 return -EINVAL;
4546                 }
4547                 if (count_ht && rate)
4548                         return -EINVAL;
4549         }
4550
4551         count_vht = 0;
4552         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4553                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4554                         return -EINVAL;
4555                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4556                         count_vht++;
4557                         if (count_vht > 1)
4558                                 return -EINVAL;
4559                 }
4560                 if (count_vht && rate)
4561                         return -EINVAL;
4562         }
4563
4564         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4565                 return -EINVAL;
4566
4567         if (rate &&
4568             !wiphy_ext_feature_isset(&rdev->wiphy,
4569                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4570                 return -EINVAL;
4571         if (count_ht &&
4572             !wiphy_ext_feature_isset(&rdev->wiphy,
4573                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4574                 return -EINVAL;
4575         if (count_vht &&
4576             !wiphy_ext_feature_isset(&rdev->wiphy,
4577                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4578                 return -EINVAL;
4579
4580         return 0;
4581 }
4582
4583 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4584                                 struct nlattr *attrs[],
4585                                 struct cfg80211_beacon_data *bcn)
4586 {
4587         bool haveinfo = false;
4588         int err;
4589
4590         memset(bcn, 0, sizeof(*bcn));
4591
4592         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4593                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4594                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4595                 if (!bcn->head_len)
4596                         return -EINVAL;
4597                 haveinfo = true;
4598         }
4599
4600         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4601                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4602                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4603                 haveinfo = true;
4604         }
4605
4606         if (!haveinfo)
4607                 return -EINVAL;
4608
4609         if (attrs[NL80211_ATTR_IE]) {
4610                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4611                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4612         }
4613
4614         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4615                 bcn->proberesp_ies =
4616                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4617                 bcn->proberesp_ies_len =
4618                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4619         }
4620
4621         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4622                 bcn->assocresp_ies =
4623                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4624                 bcn->assocresp_ies_len =
4625                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4626         }
4627
4628         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4629                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4630                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4631         }
4632
4633         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4634                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4635
4636                 err = nla_parse_nested_deprecated(tb,
4637                                                   NL80211_FTM_RESP_ATTR_MAX,
4638                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4639                                                   NULL, NULL);
4640                 if (err)
4641                         return err;
4642
4643                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4644                     wiphy_ext_feature_isset(&rdev->wiphy,
4645                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4646                         bcn->ftm_responder = 1;
4647                 else
4648                         return -EOPNOTSUPP;
4649
4650                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4651                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4652                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4653                 }
4654
4655                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4656                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4657                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4658                 }
4659         } else {
4660                 bcn->ftm_responder = -1;
4661         }
4662
4663         return 0;
4664 }
4665
4666 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4667                                     struct ieee80211_he_obss_pd *he_obss_pd)
4668 {
4669         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4670         int err;
4671
4672         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4673                                he_obss_pd_policy, NULL);
4674         if (err)
4675                 return err;
4676
4677         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4678             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4679                 return -EINVAL;
4680
4681         he_obss_pd->min_offset =
4682                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4683         he_obss_pd->max_offset =
4684                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4685
4686         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4687                 return -EINVAL;
4688
4689         he_obss_pd->enable = true;
4690
4691         return 0;
4692 }
4693
4694 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4695                                       struct cfg80211_he_bss_color *he_bss_color)
4696 {
4697         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4698         int err;
4699
4700         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4701                                he_bss_color_policy, NULL);
4702         if (err)
4703                 return err;
4704
4705         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4706                 return -EINVAL;
4707
4708         he_bss_color->color =
4709                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4710         he_bss_color->disabled =
4711                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4712         he_bss_color->partial =
4713                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4714
4715         return 0;
4716 }
4717
4718 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4719                                             const u8 *rates)
4720 {
4721         int i;
4722
4723         if (!rates)
4724                 return;
4725
4726         for (i = 0; i < rates[1]; i++) {
4727                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4728                         params->ht_required = true;
4729                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4730                         params->vht_required = true;
4731         }
4732 }
4733
4734 /*
4735  * Since the nl80211 API didn't include, from the beginning, attributes about
4736  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4737  * benefit of drivers that rebuild IEs in the firmware.
4738  */
4739 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4740 {
4741         const struct cfg80211_beacon_data *bcn = &params->beacon;
4742         size_t ies_len = bcn->tail_len;
4743         const u8 *ies = bcn->tail;
4744         const u8 *rates;
4745         const u8 *cap;
4746
4747         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4748         nl80211_check_ap_rate_selectors(params, rates);
4749
4750         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4751         nl80211_check_ap_rate_selectors(params, rates);
4752
4753         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4754         if (cap && cap[1] >= sizeof(*params->ht_cap))
4755                 params->ht_cap = (void *)(cap + 2);
4756         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4757         if (cap && cap[1] >= sizeof(*params->vht_cap))
4758                 params->vht_cap = (void *)(cap + 2);
4759         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4760         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4761                 params->he_cap = (void *)(cap + 3);
4762         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4763         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4764                 params->he_oper = (void *)(cap + 3);
4765 }
4766
4767 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4768                                    struct cfg80211_ap_settings *params)
4769 {
4770         struct wireless_dev *wdev;
4771         bool ret = false;
4772
4773         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4774                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4775                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4776                         continue;
4777
4778                 if (!wdev->preset_chandef.chan)
4779                         continue;
4780
4781                 params->chandef = wdev->preset_chandef;
4782                 ret = true;
4783                 break;
4784         }
4785
4786         return ret;
4787 }
4788
4789 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4790                                     enum nl80211_auth_type auth_type,
4791                                     enum nl80211_commands cmd)
4792 {
4793         if (auth_type > NL80211_AUTHTYPE_MAX)
4794                 return false;
4795
4796         switch (cmd) {
4797         case NL80211_CMD_AUTHENTICATE:
4798                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4799                     auth_type == NL80211_AUTHTYPE_SAE)
4800                         return false;
4801                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4802                                              NL80211_EXT_FEATURE_FILS_STA) &&
4803                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4804                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4805                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4806                         return false;
4807                 return true;
4808         case NL80211_CMD_CONNECT:
4809                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4810                     !wiphy_ext_feature_isset(&rdev->wiphy,
4811                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4812                     auth_type == NL80211_AUTHTYPE_SAE)
4813                         return false;
4814
4815                 /* FILS with SK PFS or PK not supported yet */
4816                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4817                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4818                         return false;
4819                 if (!wiphy_ext_feature_isset(
4820                             &rdev->wiphy,
4821                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4822                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4823                         return false;
4824                 return true;
4825         case NL80211_CMD_START_AP:
4826                 /* SAE not supported yet */
4827                 if (auth_type == NL80211_AUTHTYPE_SAE)
4828                         return false;
4829                 /* FILS not supported yet */
4830                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4831                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4832                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4833                         return false;
4834                 return true;
4835         default:
4836                 return false;
4837         }
4838 }
4839
4840 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4841 {
4842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4843         struct net_device *dev = info->user_ptr[1];
4844         struct wireless_dev *wdev = dev->ieee80211_ptr;
4845         struct cfg80211_ap_settings params;
4846         int err;
4847
4848         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4849             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4850                 return -EOPNOTSUPP;
4851
4852         if (!rdev->ops->start_ap)
4853                 return -EOPNOTSUPP;
4854
4855         if (wdev->beacon_interval)
4856                 return -EALREADY;
4857
4858         memset(&params, 0, sizeof(params));
4859
4860         /* these are required for START_AP */
4861         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4862             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4863             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4864                 return -EINVAL;
4865
4866         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4867         if (err)
4868                 return err;
4869
4870         params.beacon_interval =
4871                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4872         params.dtim_period =
4873                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4874
4875         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4876                                            params.beacon_interval);
4877         if (err)
4878                 return err;
4879
4880         /*
4881          * In theory, some of these attributes should be required here
4882          * but since they were not used when the command was originally
4883          * added, keep them optional for old user space programs to let
4884          * them continue to work with drivers that do not need the
4885          * additional information -- drivers must check!
4886          */
4887         if (info->attrs[NL80211_ATTR_SSID]) {
4888                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4889                 params.ssid_len =
4890                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4891                 if (params.ssid_len == 0 ||
4892                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4893                         return -EINVAL;
4894         }
4895
4896         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4897                 params.hidden_ssid = nla_get_u32(
4898                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4899
4900         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4901
4902         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4903                 params.auth_type = nla_get_u32(
4904                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4905                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4906                                              NL80211_CMD_START_AP))
4907                         return -EINVAL;
4908         } else
4909                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4910
4911         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4912                                       NL80211_MAX_NR_CIPHER_SUITES);
4913         if (err)
4914                 return err;
4915
4916         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4917                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4918                         return -EOPNOTSUPP;
4919                 params.inactivity_timeout = nla_get_u16(
4920                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4921         }
4922
4923         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4924                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4925                         return -EINVAL;
4926                 params.p2p_ctwindow =
4927                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4928                 if (params.p2p_ctwindow != 0 &&
4929                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4930                         return -EINVAL;
4931         }
4932
4933         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4934                 u8 tmp;
4935
4936                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4937                         return -EINVAL;
4938                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4939                 params.p2p_opp_ps = tmp;
4940                 if (params.p2p_opp_ps != 0 &&
4941                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4942                         return -EINVAL;
4943         }
4944
4945         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4946                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4947                 if (err)
4948                         return err;
4949         } else if (wdev->preset_chandef.chan) {
4950                 params.chandef = wdev->preset_chandef;
4951         } else if (!nl80211_get_ap_channel(rdev, &params))
4952                 return -EINVAL;
4953
4954         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4955                                            wdev->iftype))
4956                 return -EINVAL;
4957
4958         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4959                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4960                 if (err)
4961                         return err;
4962
4963                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4964                                               &params.beacon_rate);
4965                 if (err)
4966                         return err;
4967         }
4968
4969         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4970                 params.smps_mode =
4971                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4972                 switch (params.smps_mode) {
4973                 case NL80211_SMPS_OFF:
4974                         break;
4975                 case NL80211_SMPS_STATIC:
4976                         if (!(rdev->wiphy.features &
4977                               NL80211_FEATURE_STATIC_SMPS))
4978                                 return -EINVAL;
4979                         break;
4980                 case NL80211_SMPS_DYNAMIC:
4981                         if (!(rdev->wiphy.features &
4982                               NL80211_FEATURE_DYNAMIC_SMPS))
4983                                 return -EINVAL;
4984                         break;
4985                 default:
4986                         return -EINVAL;
4987                 }
4988         } else {
4989                 params.smps_mode = NL80211_SMPS_OFF;
4990         }
4991
4992         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4993         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4994                 return -EOPNOTSUPP;
4995
4996         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4997                 params.acl = parse_acl_data(&rdev->wiphy, info);
4998                 if (IS_ERR(params.acl))
4999                         return PTR_ERR(params.acl);
5000         }
5001
5002         params.twt_responder =
5003                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5004
5005         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5006                 err = nl80211_parse_he_obss_pd(
5007                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5008                                         &params.he_obss_pd);
5009                 goto out;
5010         }
5011
5012         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5013                 err = nl80211_parse_he_bss_color(
5014                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5015                                         &params.he_bss_color);
5016                 if (err)
5017                         return err;
5018         }
5019
5020         nl80211_calculate_ap_params(&params);
5021
5022         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5023                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5024
5025         wdev_lock(wdev);
5026         err = rdev_start_ap(rdev, dev, &params);
5027         if (!err) {
5028                 wdev->preset_chandef = params.chandef;
5029                 wdev->beacon_interval = params.beacon_interval;
5030                 wdev->chandef = params.chandef;
5031                 wdev->ssid_len = params.ssid_len;
5032                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5033
5034                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5035                         wdev->conn_owner_nlportid = info->snd_portid;
5036         }
5037         wdev_unlock(wdev);
5038
5039 out:
5040         kfree(params.acl);
5041
5042         return err;
5043 }
5044
5045 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5046 {
5047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5048         struct net_device *dev = info->user_ptr[1];
5049         struct wireless_dev *wdev = dev->ieee80211_ptr;
5050         struct cfg80211_beacon_data params;
5051         int err;
5052
5053         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5054             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5055                 return -EOPNOTSUPP;
5056
5057         if (!rdev->ops->change_beacon)
5058                 return -EOPNOTSUPP;
5059
5060         if (!wdev->beacon_interval)
5061                 return -EINVAL;
5062
5063         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5064         if (err)
5065                 return err;
5066
5067         wdev_lock(wdev);
5068         err = rdev_change_beacon(rdev, dev, &params);
5069         wdev_unlock(wdev);
5070
5071         return err;
5072 }
5073
5074 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5075 {
5076         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5077         struct net_device *dev = info->user_ptr[1];
5078
5079         return cfg80211_stop_ap(rdev, dev, false);
5080 }
5081
5082 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5083         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5084         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5085         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5086         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5087         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5088         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5089 };
5090
5091 static int parse_station_flags(struct genl_info *info,
5092                                enum nl80211_iftype iftype,
5093                                struct station_parameters *params)
5094 {
5095         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5096         struct nlattr *nla;
5097         int flag;
5098
5099         /*
5100          * Try parsing the new attribute first so userspace
5101          * can specify both for older kernels.
5102          */
5103         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5104         if (nla) {
5105                 struct nl80211_sta_flag_update *sta_flags;
5106
5107                 sta_flags = nla_data(nla);
5108                 params->sta_flags_mask = sta_flags->mask;
5109                 params->sta_flags_set = sta_flags->set;
5110                 params->sta_flags_set &= params->sta_flags_mask;
5111                 if ((params->sta_flags_mask |
5112                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5113                         return -EINVAL;
5114                 return 0;
5115         }
5116
5117         /* if present, parse the old attribute */
5118
5119         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5120         if (!nla)
5121                 return 0;
5122
5123         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5124                 return -EINVAL;
5125
5126         /*
5127          * Only allow certain flags for interface types so that
5128          * other attributes are silently ignored. Remember that
5129          * this is backward compatibility code with old userspace
5130          * and shouldn't be hit in other cases anyway.
5131          */
5132         switch (iftype) {
5133         case NL80211_IFTYPE_AP:
5134         case NL80211_IFTYPE_AP_VLAN:
5135         case NL80211_IFTYPE_P2P_GO:
5136                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5137                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5138                                          BIT(NL80211_STA_FLAG_WME) |
5139                                          BIT(NL80211_STA_FLAG_MFP);
5140                 break;
5141         case NL80211_IFTYPE_P2P_CLIENT:
5142         case NL80211_IFTYPE_STATION:
5143                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5144                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5145                 break;
5146         case NL80211_IFTYPE_MESH_POINT:
5147                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5148                                          BIT(NL80211_STA_FLAG_MFP) |
5149                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5150                 break;
5151         default:
5152                 return -EINVAL;
5153         }
5154
5155         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5156                 if (flags[flag]) {
5157                         params->sta_flags_set |= (1<<flag);
5158
5159                         /* no longer support new API additions in old API */
5160                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5161                                 return -EINVAL;
5162                 }
5163         }
5164
5165         return 0;
5166 }
5167
5168 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5169 {
5170         struct nlattr *rate;
5171         u32 bitrate;
5172         u16 bitrate_compat;
5173         enum nl80211_rate_info rate_flg;
5174
5175         rate = nla_nest_start_noflag(msg, attr);
5176         if (!rate)
5177                 return false;
5178
5179         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5180         bitrate = cfg80211_calculate_bitrate(info);
5181         /* report 16-bit bitrate only if we can */
5182         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5183         if (bitrate > 0 &&
5184             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5185                 return false;
5186         if (bitrate_compat > 0 &&
5187             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5188                 return false;
5189
5190         switch (info->bw) {
5191         case RATE_INFO_BW_5:
5192                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5193                 break;
5194         case RATE_INFO_BW_10:
5195                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5196                 break;
5197         default:
5198                 WARN_ON(1);
5199                 /* fall through */
5200         case RATE_INFO_BW_20:
5201                 rate_flg = 0;
5202                 break;
5203         case RATE_INFO_BW_40:
5204                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5205                 break;
5206         case RATE_INFO_BW_80:
5207                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5208                 break;
5209         case RATE_INFO_BW_160:
5210                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5211                 break;
5212         case RATE_INFO_BW_HE_RU:
5213                 rate_flg = 0;
5214                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5215         }
5216
5217         if (rate_flg && nla_put_flag(msg, rate_flg))
5218                 return false;
5219
5220         if (info->flags & RATE_INFO_FLAGS_MCS) {
5221                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5222                         return false;
5223                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5224                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5225                         return false;
5226         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5227                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5228                         return false;
5229                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5230                         return false;
5231                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5232                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5233                         return false;
5234         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5235                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5236                         return false;
5237                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5238                         return false;
5239                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5240                         return false;
5241                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5242                         return false;
5243                 if (info->bw == RATE_INFO_BW_HE_RU &&
5244                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5245                                info->he_ru_alloc))
5246                         return false;
5247         }
5248
5249         nla_nest_end(msg, rate);
5250         return true;
5251 }
5252
5253 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5254                                int id)
5255 {
5256         void *attr;
5257         int i = 0;
5258
5259         if (!mask)
5260                 return true;
5261
5262         attr = nla_nest_start_noflag(msg, id);
5263         if (!attr)
5264                 return false;
5265
5266         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5267                 if (!(mask & BIT(i)))
5268                         continue;
5269
5270                 if (nla_put_u8(msg, i, signal[i]))
5271                         return false;
5272         }
5273
5274         nla_nest_end(msg, attr);
5275
5276         return true;
5277 }
5278
5279 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5280                                 u32 seq, int flags,
5281                                 struct cfg80211_registered_device *rdev,
5282                                 struct net_device *dev,
5283                                 const u8 *mac_addr, struct station_info *sinfo)
5284 {
5285         void *hdr;
5286         struct nlattr *sinfoattr, *bss_param;
5287
5288         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5289         if (!hdr) {
5290                 cfg80211_sinfo_release_content(sinfo);
5291                 return -1;
5292         }
5293
5294         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5295             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5296             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5297                 goto nla_put_failure;
5298
5299         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5300         if (!sinfoattr)
5301                 goto nla_put_failure;
5302
5303 #define PUT_SINFO(attr, memb, type) do {                                \
5304         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5305         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5306             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5307                              sinfo->memb))                              \
5308                 goto nla_put_failure;                                   \
5309         } while (0)
5310 #define PUT_SINFO_U64(attr, memb) do {                                  \
5311         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5312             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5313                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5314                 goto nla_put_failure;                                   \
5315         } while (0)
5316
5317         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5318         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5319         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5320
5321         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5322                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5323             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5324                         (u32)sinfo->rx_bytes))
5325                 goto nla_put_failure;
5326
5327         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5328                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5329             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5330                         (u32)sinfo->tx_bytes))
5331                 goto nla_put_failure;
5332
5333         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5334         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5335         PUT_SINFO(LLID, llid, u16);
5336         PUT_SINFO(PLID, plid, u16);
5337         PUT_SINFO(PLINK_STATE, plink_state, u8);
5338         PUT_SINFO_U64(RX_DURATION, rx_duration);
5339         PUT_SINFO_U64(TX_DURATION, tx_duration);
5340
5341         if (wiphy_ext_feature_isset(&rdev->wiphy,
5342                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5343                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5344
5345         switch (rdev->wiphy.signal_type) {
5346         case CFG80211_SIGNAL_TYPE_MBM:
5347                 PUT_SINFO(SIGNAL, signal, u8);
5348                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5349                 break;
5350         default:
5351                 break;
5352         }
5353         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5354                 if (!nl80211_put_signal(msg, sinfo->chains,
5355                                         sinfo->chain_signal,
5356                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5357                         goto nla_put_failure;
5358         }
5359         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5360                 if (!nl80211_put_signal(msg, sinfo->chains,
5361                                         sinfo->chain_signal_avg,
5362                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5363                         goto nla_put_failure;
5364         }
5365         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5366                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5367                                           NL80211_STA_INFO_TX_BITRATE))
5368                         goto nla_put_failure;
5369         }
5370         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5371                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5372                                           NL80211_STA_INFO_RX_BITRATE))
5373                         goto nla_put_failure;
5374         }
5375
5376         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5377         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5378         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5379         PUT_SINFO(TX_FAILED, tx_failed, u32);
5380         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5381         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5382         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5383         PUT_SINFO(LOCAL_PM, local_pm, u32);
5384         PUT_SINFO(PEER_PM, peer_pm, u32);
5385         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5386         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5387
5388         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5389                 bss_param = nla_nest_start_noflag(msg,
5390                                                   NL80211_STA_INFO_BSS_PARAM);
5391                 if (!bss_param)
5392                         goto nla_put_failure;
5393
5394                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5395                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5396                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5397                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5398                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5399                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5400                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5401                                sinfo->bss_param.dtim_period) ||
5402                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5403                                 sinfo->bss_param.beacon_interval))
5404                         goto nla_put_failure;
5405
5406                 nla_nest_end(msg, bss_param);
5407         }
5408         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5409             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5410                     sizeof(struct nl80211_sta_flag_update),
5411                     &sinfo->sta_flags))
5412                 goto nla_put_failure;
5413
5414         PUT_SINFO_U64(T_OFFSET, t_offset);
5415         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5416         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5417         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5418         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5419         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5420         if (wiphy_ext_feature_isset(&rdev->wiphy,
5421                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5422                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5423                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5424         }
5425
5426 #undef PUT_SINFO
5427 #undef PUT_SINFO_U64
5428
5429         if (sinfo->pertid) {
5430                 struct nlattr *tidsattr;
5431                 int tid;
5432
5433                 tidsattr = nla_nest_start_noflag(msg,
5434                                                  NL80211_STA_INFO_TID_STATS);
5435                 if (!tidsattr)
5436                         goto nla_put_failure;
5437
5438                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5439                         struct cfg80211_tid_stats *tidstats;
5440                         struct nlattr *tidattr;
5441
5442                         tidstats = &sinfo->pertid[tid];
5443
5444                         if (!tidstats->filled)
5445                                 continue;
5446
5447                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5448                         if (!tidattr)
5449                                 goto nla_put_failure;
5450
5451 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5452         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5453             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5454                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5455                 goto nla_put_failure;                                   \
5456         } while (0)
5457
5458                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5459                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5460                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5461                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5462
5463 #undef PUT_TIDVAL_U64
5464                         if ((tidstats->filled &
5465                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5466                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5467                                                    NL80211_TID_STATS_TXQ_STATS))
5468                                 goto nla_put_failure;
5469
5470                         nla_nest_end(msg, tidattr);
5471                 }
5472
5473                 nla_nest_end(msg, tidsattr);
5474         }
5475
5476         nla_nest_end(msg, sinfoattr);
5477
5478         if (sinfo->assoc_req_ies_len &&
5479             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5480                     sinfo->assoc_req_ies))
5481                 goto nla_put_failure;
5482
5483         cfg80211_sinfo_release_content(sinfo);
5484         genlmsg_end(msg, hdr);
5485         return 0;
5486
5487  nla_put_failure:
5488         cfg80211_sinfo_release_content(sinfo);
5489         genlmsg_cancel(msg, hdr);
5490         return -EMSGSIZE;
5491 }
5492
5493 static int nl80211_dump_station(struct sk_buff *skb,
5494                                 struct netlink_callback *cb)
5495 {
5496         struct station_info sinfo;
5497         struct cfg80211_registered_device *rdev;
5498         struct wireless_dev *wdev;
5499         u8 mac_addr[ETH_ALEN];
5500         int sta_idx = cb->args[2];
5501         int err;
5502
5503         rtnl_lock();
5504         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5505         if (err)
5506                 goto out_err;
5507
5508         if (!wdev->netdev) {
5509                 err = -EINVAL;
5510                 goto out_err;
5511         }
5512
5513         if (!rdev->ops->dump_station) {
5514                 err = -EOPNOTSUPP;
5515                 goto out_err;
5516         }
5517
5518         while (1) {
5519                 memset(&sinfo, 0, sizeof(sinfo));
5520                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5521                                         mac_addr, &sinfo);
5522                 if (err == -ENOENT)
5523                         break;
5524                 if (err)
5525                         goto out_err;
5526
5527                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5528                                 NETLINK_CB(cb->skb).portid,
5529                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5530                                 rdev, wdev->netdev, mac_addr,
5531                                 &sinfo) < 0)
5532                         goto out;
5533
5534                 sta_idx++;
5535         }
5536
5537  out:
5538         cb->args[2] = sta_idx;
5539         err = skb->len;
5540  out_err:
5541         rtnl_unlock();
5542
5543         return err;
5544 }
5545
5546 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5547 {
5548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5549         struct net_device *dev = info->user_ptr[1];
5550         struct station_info sinfo;
5551         struct sk_buff *msg;
5552         u8 *mac_addr = NULL;
5553         int err;
5554
5555         memset(&sinfo, 0, sizeof(sinfo));
5556
5557         if (!info->attrs[NL80211_ATTR_MAC])
5558                 return -EINVAL;
5559
5560         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5561
5562         if (!rdev->ops->get_station)
5563                 return -EOPNOTSUPP;
5564
5565         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5566         if (err)
5567                 return err;
5568
5569         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5570         if (!msg) {
5571                 cfg80211_sinfo_release_content(&sinfo);
5572                 return -ENOMEM;
5573         }
5574
5575         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5576                                  info->snd_portid, info->snd_seq, 0,
5577                                  rdev, dev, mac_addr, &sinfo) < 0) {
5578                 nlmsg_free(msg);
5579                 return -ENOBUFS;
5580         }
5581
5582         return genlmsg_reply(msg, info);
5583 }
5584
5585 int cfg80211_check_station_change(struct wiphy *wiphy,
5586                                   struct station_parameters *params,
5587                                   enum cfg80211_station_type statype)
5588 {
5589         if (params->listen_interval != -1 &&
5590             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5591                 return -EINVAL;
5592
5593         if (params->support_p2p_ps != -1 &&
5594             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5595                 return -EINVAL;
5596
5597         if (params->aid &&
5598             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5599             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5600                 return -EINVAL;
5601
5602         /* When you run into this, adjust the code below for the new flag */
5603         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5604
5605         switch (statype) {
5606         case CFG80211_STA_MESH_PEER_KERNEL:
5607         case CFG80211_STA_MESH_PEER_USER:
5608                 /*
5609                  * No ignoring the TDLS flag here -- the userspace mesh
5610                  * code doesn't have the bug of including TDLS in the
5611                  * mask everywhere.
5612                  */
5613                 if (params->sta_flags_mask &
5614                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5615                                   BIT(NL80211_STA_FLAG_MFP) |
5616                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5617                         return -EINVAL;
5618                 break;
5619         case CFG80211_STA_TDLS_PEER_SETUP:
5620         case CFG80211_STA_TDLS_PEER_ACTIVE:
5621                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5622                         return -EINVAL;
5623                 /* ignore since it can't change */
5624                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5625                 break;
5626         default:
5627                 /* disallow mesh-specific things */
5628                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5629                         return -EINVAL;
5630                 if (params->local_pm)
5631                         return -EINVAL;
5632                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5633                         return -EINVAL;
5634         }
5635
5636         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5637             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5638                 /* TDLS can't be set, ... */
5639                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5640                         return -EINVAL;
5641                 /*
5642                  * ... but don't bother the driver with it. This works around
5643                  * a hostapd/wpa_supplicant issue -- it always includes the
5644                  * TLDS_PEER flag in the mask even for AP mode.
5645                  */
5646                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5647         }
5648
5649         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5650             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5651                 /* reject other things that can't change */
5652                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5653                         return -EINVAL;
5654                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5655                         return -EINVAL;
5656                 if (params->supported_rates)
5657                         return -EINVAL;
5658                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5659                     params->he_capa)
5660                         return -EINVAL;
5661         }
5662
5663         if (statype != CFG80211_STA_AP_CLIENT &&
5664             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5665                 if (params->vlan)
5666                         return -EINVAL;
5667         }
5668
5669         switch (statype) {
5670         case CFG80211_STA_AP_MLME_CLIENT:
5671                 /* Use this only for authorizing/unauthorizing a station */
5672                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5673                         return -EOPNOTSUPP;
5674                 break;
5675         case CFG80211_STA_AP_CLIENT:
5676         case CFG80211_STA_AP_CLIENT_UNASSOC:
5677                 /* accept only the listed bits */
5678                 if (params->sta_flags_mask &
5679                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5680                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5681                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5682                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5683                                   BIT(NL80211_STA_FLAG_WME) |
5684                                   BIT(NL80211_STA_FLAG_MFP)))
5685                         return -EINVAL;
5686
5687                 /* but authenticated/associated only if driver handles it */
5688                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5689                     params->sta_flags_mask &
5690                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5691                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5692                         return -EINVAL;
5693                 break;
5694         case CFG80211_STA_IBSS:
5695         case CFG80211_STA_AP_STA:
5696                 /* reject any changes other than AUTHORIZED */
5697                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5698                         return -EINVAL;
5699                 break;
5700         case CFG80211_STA_TDLS_PEER_SETUP:
5701                 /* reject any changes other than AUTHORIZED or WME */
5702                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5703                                                BIT(NL80211_STA_FLAG_WME)))
5704                         return -EINVAL;
5705                 /* force (at least) rates when authorizing */
5706                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5707                     !params->supported_rates)
5708                         return -EINVAL;
5709                 break;
5710         case CFG80211_STA_TDLS_PEER_ACTIVE:
5711                 /* reject any changes */
5712                 return -EINVAL;
5713         case CFG80211_STA_MESH_PEER_KERNEL:
5714                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5715                         return -EINVAL;
5716                 break;
5717         case CFG80211_STA_MESH_PEER_USER:
5718                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5719                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5720                         return -EINVAL;
5721                 break;
5722         }
5723
5724         /*
5725          * Older kernel versions ignored this attribute entirely, so don't
5726          * reject attempts to update it but mark it as unused instead so the
5727          * driver won't look at the data.
5728          */
5729         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5730             statype != CFG80211_STA_TDLS_PEER_SETUP)
5731                 params->opmode_notif_used = false;
5732
5733         return 0;
5734 }
5735 EXPORT_SYMBOL(cfg80211_check_station_change);
5736
5737 /*
5738  * Get vlan interface making sure it is running and on the right wiphy.
5739  */
5740 static struct net_device *get_vlan(struct genl_info *info,
5741                                    struct cfg80211_registered_device *rdev)
5742 {
5743         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5744         struct net_device *v;
5745         int ret;
5746
5747         if (!vlanattr)
5748                 return NULL;
5749
5750         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5751         if (!v)
5752                 return ERR_PTR(-ENODEV);
5753
5754         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5755                 ret = -EINVAL;
5756                 goto error;
5757         }
5758
5759         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5760             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5761             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5762                 ret = -EINVAL;
5763                 goto error;
5764         }
5765
5766         if (!netif_running(v)) {
5767                 ret = -ENETDOWN;
5768                 goto error;
5769         }
5770
5771         return v;
5772  error:
5773         dev_put(v);
5774         return ERR_PTR(ret);
5775 }
5776
5777 static const struct nla_policy
5778 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5779         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5780         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5781 };
5782
5783 static int nl80211_parse_sta_wme(struct genl_info *info,
5784                                  struct station_parameters *params)
5785 {
5786         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5787         struct nlattr *nla;
5788         int err;
5789
5790         /* parse WME attributes if present */
5791         if (!info->attrs[NL80211_ATTR_STA_WME])
5792                 return 0;
5793
5794         nla = info->attrs[NL80211_ATTR_STA_WME];
5795         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5796                                           nl80211_sta_wme_policy,
5797                                           info->extack);
5798         if (err)
5799                 return err;
5800
5801         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5802                 params->uapsd_queues = nla_get_u8(
5803                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5804         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5805                 return -EINVAL;
5806
5807         if (tb[NL80211_STA_WME_MAX_SP])
5808                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5809
5810         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5811                 return -EINVAL;
5812
5813         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5814
5815         return 0;
5816 }
5817
5818 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5819                                       struct station_parameters *params)
5820 {
5821         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5822                 params->supported_channels =
5823                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5824                 params->supported_channels_len =
5825                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5826                 /*
5827                  * Need to include at least one (first channel, number of
5828                  * channels) tuple for each subband, and must have proper
5829                  * tuples for the rest of the data as well.
5830                  */
5831                 if (params->supported_channels_len < 2)
5832                         return -EINVAL;
5833                 if (params->supported_channels_len % 2)
5834                         return -EINVAL;
5835         }
5836
5837         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5838                 params->supported_oper_classes =
5839                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5840                 params->supported_oper_classes_len =
5841                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5842                 /*
5843                  * The value of the Length field of the Supported Operating
5844                  * Classes element is between 2 and 253.
5845                  */
5846                 if (params->supported_oper_classes_len < 2 ||
5847                     params->supported_oper_classes_len > 253)
5848                         return -EINVAL;
5849         }
5850         return 0;
5851 }
5852
5853 static int nl80211_set_station_tdls(struct genl_info *info,
5854                                     struct station_parameters *params)
5855 {
5856         int err;
5857         /* Dummy STA entry gets updated once the peer capabilities are known */
5858         if (info->attrs[NL80211_ATTR_PEER_AID])
5859                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5860         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5861                 params->ht_capa =
5862                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5863         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5864                 params->vht_capa =
5865                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5866         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5867                 params->he_capa =
5868                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5869                 params->he_capa_len =
5870                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5871
5872                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5873                         return -EINVAL;
5874         }
5875
5876         err = nl80211_parse_sta_channel_info(info, params);
5877         if (err)
5878                 return err;
5879
5880         return nl80211_parse_sta_wme(info, params);
5881 }
5882
5883 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5884                                              struct station_parameters *params)
5885 {
5886         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5887         int idx;
5888
5889         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5890                 if (!rdev->ops->set_tx_power ||
5891                     !wiphy_ext_feature_isset(&rdev->wiphy,
5892                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5893                         return -EOPNOTSUPP;
5894
5895                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5896                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5897
5898                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5899                         idx = NL80211_ATTR_STA_TX_POWER;
5900
5901                         if (info->attrs[idx])
5902                                 params->txpwr.power =
5903                                         nla_get_s16(info->attrs[idx]);
5904                         else
5905                                 return -EINVAL;
5906                 }
5907                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5908         }
5909
5910         return 0;
5911 }
5912
5913 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5914 {
5915         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5916         struct net_device *dev = info->user_ptr[1];
5917         struct station_parameters params;
5918         u8 *mac_addr;
5919         int err;
5920
5921         memset(&params, 0, sizeof(params));
5922
5923         if (!rdev->ops->change_station)
5924                 return -EOPNOTSUPP;
5925
5926         /*
5927          * AID and listen_interval properties can be set only for unassociated
5928          * station. Include these parameters here and will check them in
5929          * cfg80211_check_station_change().
5930          */
5931         if (info->attrs[NL80211_ATTR_STA_AID])
5932                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5933
5934         if (info->attrs[NL80211_ATTR_VLAN_ID])
5935                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5936
5937         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5938                 params.listen_interval =
5939                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5940         else
5941                 params.listen_interval = -1;
5942
5943         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5944                 params.support_p2p_ps =
5945                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5946         else
5947                 params.support_p2p_ps = -1;
5948
5949         if (!info->attrs[NL80211_ATTR_MAC])
5950                 return -EINVAL;
5951
5952         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5953
5954         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5955                 params.supported_rates =
5956                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5957                 params.supported_rates_len =
5958                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5959         }
5960
5961         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5962                 params.capability =
5963                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5964                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5965         }
5966
5967         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5968                 params.ext_capab =
5969                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5970                 params.ext_capab_len =
5971                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5972         }
5973
5974         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5975                 return -EINVAL;
5976
5977         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5978                 params.plink_action =
5979                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5980
5981         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5982                 params.plink_state =
5983                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5984                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5985                         params.peer_aid = nla_get_u16(
5986                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5987                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5988         }
5989
5990         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5991                 params.local_pm = nla_get_u32(
5992                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5993
5994         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5995                 params.opmode_notif_used = true;
5996                 params.opmode_notif =
5997                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5998         }
5999
6000         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6001                 params.airtime_weight =
6002                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6003
6004         if (params.airtime_weight &&
6005             !wiphy_ext_feature_isset(&rdev->wiphy,
6006                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6007                 return -EOPNOTSUPP;
6008
6009         err = nl80211_parse_sta_txpower_setting(info, &params);
6010         if (err)
6011                 return err;
6012
6013         /* Include parameters for TDLS peer (will check later) */
6014         err = nl80211_set_station_tdls(info, &params);
6015         if (err)
6016                 return err;
6017
6018         params.vlan = get_vlan(info, rdev);
6019         if (IS_ERR(params.vlan))
6020                 return PTR_ERR(params.vlan);
6021
6022         switch (dev->ieee80211_ptr->iftype) {
6023         case NL80211_IFTYPE_AP:
6024         case NL80211_IFTYPE_AP_VLAN:
6025         case NL80211_IFTYPE_P2P_GO:
6026         case NL80211_IFTYPE_P2P_CLIENT:
6027         case NL80211_IFTYPE_STATION:
6028         case NL80211_IFTYPE_ADHOC:
6029         case NL80211_IFTYPE_MESH_POINT:
6030                 break;
6031         default:
6032                 err = -EOPNOTSUPP;
6033                 goto out_put_vlan;
6034         }
6035
6036         /* driver will call cfg80211_check_station_change() */
6037         err = rdev_change_station(rdev, dev, mac_addr, &params);
6038
6039  out_put_vlan:
6040         if (params.vlan)
6041                 dev_put(params.vlan);
6042
6043         return err;
6044 }
6045
6046 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6047 {
6048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6049         int err;
6050         struct net_device *dev = info->user_ptr[1];
6051         struct station_parameters params;
6052         u8 *mac_addr = NULL;
6053         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6054                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6055
6056         memset(&params, 0, sizeof(params));
6057
6058         if (!rdev->ops->add_station)
6059                 return -EOPNOTSUPP;
6060
6061         if (!info->attrs[NL80211_ATTR_MAC])
6062                 return -EINVAL;
6063
6064         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6065                 return -EINVAL;
6066
6067         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6068                 return -EINVAL;
6069
6070         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6071             !info->attrs[NL80211_ATTR_PEER_AID])
6072                 return -EINVAL;
6073
6074         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6075         params.supported_rates =
6076                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6077         params.supported_rates_len =
6078                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6079         params.listen_interval =
6080                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6081
6082         if (info->attrs[NL80211_ATTR_VLAN_ID])
6083                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6084
6085         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6086                 params.support_p2p_ps =
6087                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6088         } else {
6089                 /*
6090                  * if not specified, assume it's supported for P2P GO interface,
6091                  * and is NOT supported for AP interface
6092                  */
6093                 params.support_p2p_ps =
6094                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6095         }
6096
6097         if (info->attrs[NL80211_ATTR_PEER_AID])
6098                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6099         else
6100                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6101
6102         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6103                 params.capability =
6104                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6105                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6106         }
6107
6108         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6109                 params.ext_capab =
6110                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6111                 params.ext_capab_len =
6112                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6113         }
6114
6115         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6116                 params.ht_capa =
6117                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6118
6119         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6120                 params.vht_capa =
6121                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6122
6123         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6124                 params.he_capa =
6125                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6126                 params.he_capa_len =
6127                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6128
6129                 /* max len is validated in nla policy */
6130                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6131                         return -EINVAL;
6132         }
6133
6134         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6135                 params.opmode_notif_used = true;
6136                 params.opmode_notif =
6137                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6138         }
6139
6140         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6141                 params.plink_action =
6142                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6143
6144         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6145                 params.airtime_weight =
6146                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6147
6148         if (params.airtime_weight &&
6149             !wiphy_ext_feature_isset(&rdev->wiphy,
6150                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6151                 return -EOPNOTSUPP;
6152
6153         err = nl80211_parse_sta_txpower_setting(info, &params);
6154         if (err)
6155                 return err;
6156
6157         err = nl80211_parse_sta_channel_info(info, &params);
6158         if (err)
6159                 return err;
6160
6161         err = nl80211_parse_sta_wme(info, &params);
6162         if (err)
6163                 return err;
6164
6165         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6166                 return -EINVAL;
6167
6168         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6169          * as userspace might just pass through the capabilities from the IEs
6170          * directly, rather than enforcing this restriction and returning an
6171          * error in this case.
6172          */
6173         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6174                 params.ht_capa = NULL;
6175                 params.vht_capa = NULL;
6176
6177                 /* HE requires WME */
6178                 if (params.he_capa_len)
6179                         return -EINVAL;
6180         }
6181
6182         /* When you run into this, adjust the code below for the new flag */
6183         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6184
6185         switch (dev->ieee80211_ptr->iftype) {
6186         case NL80211_IFTYPE_AP:
6187         case NL80211_IFTYPE_AP_VLAN:
6188         case NL80211_IFTYPE_P2P_GO:
6189                 /* ignore WME attributes if iface/sta is not capable */
6190                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6191                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6192                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6193
6194                 /* TDLS peers cannot be added */
6195                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6196                     info->attrs[NL80211_ATTR_PEER_AID])
6197                         return -EINVAL;
6198                 /* but don't bother the driver with it */
6199                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6200
6201                 /* allow authenticated/associated only if driver handles it */
6202                 if (!(rdev->wiphy.features &
6203                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6204                     params.sta_flags_mask & auth_assoc)
6205                         return -EINVAL;
6206
6207                 /* Older userspace, or userspace wanting to be compatible with
6208                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6209                  * and assoc flags in the mask, but assumes the station will be
6210                  * added as associated anyway since this was the required driver
6211                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6212                  * introduced.
6213                  * In order to not bother drivers with this quirk in the API
6214                  * set the flags in both the mask and set for new stations in
6215                  * this case.
6216                  */
6217                 if (!(params.sta_flags_mask & auth_assoc)) {
6218                         params.sta_flags_mask |= auth_assoc;
6219                         params.sta_flags_set |= auth_assoc;
6220                 }
6221
6222                 /* must be last in here for error handling */
6223                 params.vlan = get_vlan(info, rdev);
6224                 if (IS_ERR(params.vlan))
6225                         return PTR_ERR(params.vlan);
6226                 break;
6227         case NL80211_IFTYPE_MESH_POINT:
6228                 /* ignore uAPSD data */
6229                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6230
6231                 /* associated is disallowed */
6232                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6233                         return -EINVAL;
6234                 /* TDLS peers cannot be added */
6235                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6236                     info->attrs[NL80211_ATTR_PEER_AID])
6237                         return -EINVAL;
6238                 break;
6239         case NL80211_IFTYPE_STATION:
6240         case NL80211_IFTYPE_P2P_CLIENT:
6241                 /* ignore uAPSD data */
6242                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6243
6244                 /* these are disallowed */
6245                 if (params.sta_flags_mask &
6246                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6247                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6248                         return -EINVAL;
6249                 /* Only TDLS peers can be added */
6250                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6251                         return -EINVAL;
6252                 /* Can only add if TDLS ... */
6253                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6254                         return -EOPNOTSUPP;
6255                 /* ... with external setup is supported */
6256                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6257                         return -EOPNOTSUPP;
6258                 /*
6259                  * Older wpa_supplicant versions always mark the TDLS peer
6260                  * as authorized, but it shouldn't yet be.
6261                  */
6262                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6263                 break;
6264         default:
6265                 return -EOPNOTSUPP;
6266         }
6267
6268         /* be aware of params.vlan when changing code here */
6269
6270         err = rdev_add_station(rdev, dev, mac_addr, &params);
6271
6272         if (params.vlan)
6273                 dev_put(params.vlan);
6274         return err;
6275 }
6276
6277 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6278 {
6279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6280         struct net_device *dev = info->user_ptr[1];
6281         struct station_del_parameters params;
6282
6283         memset(&params, 0, sizeof(params));
6284
6285         if (info->attrs[NL80211_ATTR_MAC])
6286                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6287
6288         switch (dev->ieee80211_ptr->iftype) {
6289         case NL80211_IFTYPE_AP:
6290         case NL80211_IFTYPE_AP_VLAN:
6291         case NL80211_IFTYPE_MESH_POINT:
6292         case NL80211_IFTYPE_P2P_GO:
6293                 /* always accept these */
6294                 break;
6295         case NL80211_IFTYPE_ADHOC:
6296                 /* conditionally accept */
6297                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6298                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6299                         break;
6300                 return -EINVAL;
6301         default:
6302                 return -EINVAL;
6303         }
6304
6305         if (!rdev->ops->del_station)
6306                 return -EOPNOTSUPP;
6307
6308         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6309                 params.subtype =
6310                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6311                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6312                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6313                         return -EINVAL;
6314         } else {
6315                 /* Default to Deauthentication frame */
6316                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6317         }
6318
6319         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6320                 params.reason_code =
6321                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6322                 if (params.reason_code == 0)
6323                         return -EINVAL; /* 0 is reserved */
6324         } else {
6325                 /* Default to reason code 2 */
6326                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6327         }
6328
6329         return rdev_del_station(rdev, dev, &params);
6330 }
6331
6332 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6333                                 int flags, struct net_device *dev,
6334                                 u8 *dst, u8 *next_hop,
6335                                 struct mpath_info *pinfo)
6336 {
6337         void *hdr;
6338         struct nlattr *pinfoattr;
6339
6340         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6341         if (!hdr)
6342                 return -1;
6343
6344         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6345             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6346             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6347             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6348                 goto nla_put_failure;
6349
6350         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6351         if (!pinfoattr)
6352                 goto nla_put_failure;
6353         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6354             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6355                         pinfo->frame_qlen))
6356                 goto nla_put_failure;
6357         if (((pinfo->filled & MPATH_INFO_SN) &&
6358              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6359             ((pinfo->filled & MPATH_INFO_METRIC) &&
6360              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6361                          pinfo->metric)) ||
6362             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6363              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6364                          pinfo->exptime)) ||
6365             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6366              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6367                         pinfo->flags)) ||
6368             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6369              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6370                          pinfo->discovery_timeout)) ||
6371             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6372              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6373                         pinfo->discovery_retries)) ||
6374             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6375              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6376                         pinfo->hop_count)) ||
6377             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6378              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6379                          pinfo->path_change_count)))
6380                 goto nla_put_failure;
6381
6382         nla_nest_end(msg, pinfoattr);
6383
6384         genlmsg_end(msg, hdr);
6385         return 0;
6386
6387  nla_put_failure:
6388         genlmsg_cancel(msg, hdr);
6389         return -EMSGSIZE;
6390 }
6391
6392 static int nl80211_dump_mpath(struct sk_buff *skb,
6393                               struct netlink_callback *cb)
6394 {
6395         struct mpath_info pinfo;
6396         struct cfg80211_registered_device *rdev;
6397         struct wireless_dev *wdev;
6398         u8 dst[ETH_ALEN];
6399         u8 next_hop[ETH_ALEN];
6400         int path_idx = cb->args[2];
6401         int err;
6402
6403         rtnl_lock();
6404         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6405         if (err)
6406                 goto out_err;
6407
6408         if (!rdev->ops->dump_mpath) {
6409                 err = -EOPNOTSUPP;
6410                 goto out_err;
6411         }
6412
6413         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6414                 err = -EOPNOTSUPP;
6415                 goto out_err;
6416         }
6417
6418         while (1) {
6419                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6420                                       next_hop, &pinfo);
6421                 if (err == -ENOENT)
6422                         break;
6423                 if (err)
6424                         goto out_err;
6425
6426                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6427                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6428                                        wdev->netdev, dst, next_hop,
6429                                        &pinfo) < 0)
6430                         goto out;
6431
6432                 path_idx++;
6433         }
6434
6435  out:
6436         cb->args[2] = path_idx;
6437         err = skb->len;
6438  out_err:
6439         rtnl_unlock();
6440         return err;
6441 }
6442
6443 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6444 {
6445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6446         int err;
6447         struct net_device *dev = info->user_ptr[1];
6448         struct mpath_info pinfo;
6449         struct sk_buff *msg;
6450         u8 *dst = NULL;
6451         u8 next_hop[ETH_ALEN];
6452
6453         memset(&pinfo, 0, sizeof(pinfo));
6454
6455         if (!info->attrs[NL80211_ATTR_MAC])
6456                 return -EINVAL;
6457
6458         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6459
6460         if (!rdev->ops->get_mpath)
6461                 return -EOPNOTSUPP;
6462
6463         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6464                 return -EOPNOTSUPP;
6465
6466         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6467         if (err)
6468                 return err;
6469
6470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6471         if (!msg)
6472                 return -ENOMEM;
6473
6474         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6475                                  dev, dst, next_hop, &pinfo) < 0) {
6476                 nlmsg_free(msg);
6477                 return -ENOBUFS;
6478         }
6479
6480         return genlmsg_reply(msg, info);
6481 }
6482
6483 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6484 {
6485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6486         struct net_device *dev = info->user_ptr[1];
6487         u8 *dst = NULL;
6488         u8 *next_hop = NULL;
6489
6490         if (!info->attrs[NL80211_ATTR_MAC])
6491                 return -EINVAL;
6492
6493         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6494                 return -EINVAL;
6495
6496         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6497         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6498
6499         if (!rdev->ops->change_mpath)
6500                 return -EOPNOTSUPP;
6501
6502         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6503                 return -EOPNOTSUPP;
6504
6505         return rdev_change_mpath(rdev, dev, dst, next_hop);
6506 }
6507
6508 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6509 {
6510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6511         struct net_device *dev = info->user_ptr[1];
6512         u8 *dst = NULL;
6513         u8 *next_hop = NULL;
6514
6515         if (!info->attrs[NL80211_ATTR_MAC])
6516                 return -EINVAL;
6517
6518         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6519                 return -EINVAL;
6520
6521         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6522         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6523
6524         if (!rdev->ops->add_mpath)
6525                 return -EOPNOTSUPP;
6526
6527         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6528                 return -EOPNOTSUPP;
6529
6530         return rdev_add_mpath(rdev, dev, dst, next_hop);
6531 }
6532
6533 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6534 {
6535         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6536         struct net_device *dev = info->user_ptr[1];
6537         u8 *dst = NULL;
6538
6539         if (info->attrs[NL80211_ATTR_MAC])
6540                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6541
6542         if (!rdev->ops->del_mpath)
6543                 return -EOPNOTSUPP;
6544
6545         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6546                 return -EOPNOTSUPP;
6547
6548         return rdev_del_mpath(rdev, dev, dst);
6549 }
6550
6551 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6552 {
6553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6554         int err;
6555         struct net_device *dev = info->user_ptr[1];
6556         struct mpath_info pinfo;
6557         struct sk_buff *msg;
6558         u8 *dst = NULL;
6559         u8 mpp[ETH_ALEN];
6560
6561         memset(&pinfo, 0, sizeof(pinfo));
6562
6563         if (!info->attrs[NL80211_ATTR_MAC])
6564                 return -EINVAL;
6565
6566         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6567
6568         if (!rdev->ops->get_mpp)
6569                 return -EOPNOTSUPP;
6570
6571         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6572                 return -EOPNOTSUPP;
6573
6574         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6575         if (err)
6576                 return err;
6577
6578         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6579         if (!msg)
6580                 return -ENOMEM;
6581
6582         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6583                                dev, dst, mpp, &pinfo) < 0) {
6584                 nlmsg_free(msg);
6585                 return -ENOBUFS;
6586         }
6587
6588         return genlmsg_reply(msg, info);
6589 }
6590
6591 static int nl80211_dump_mpp(struct sk_buff *skb,
6592                             struct netlink_callback *cb)
6593 {
6594         struct mpath_info pinfo;
6595         struct cfg80211_registered_device *rdev;
6596         struct wireless_dev *wdev;
6597         u8 dst[ETH_ALEN];
6598         u8 mpp[ETH_ALEN];
6599         int path_idx = cb->args[2];
6600         int err;
6601
6602         rtnl_lock();
6603         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6604         if (err)
6605                 goto out_err;
6606
6607         if (!rdev->ops->dump_mpp) {
6608                 err = -EOPNOTSUPP;
6609                 goto out_err;
6610         }
6611
6612         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6613                 err = -EOPNOTSUPP;
6614                 goto out_err;
6615         }
6616
6617         while (1) {
6618                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6619                                     mpp, &pinfo);
6620                 if (err == -ENOENT)
6621                         break;
6622                 if (err)
6623                         goto out_err;
6624
6625                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6626                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6627                                        wdev->netdev, dst, mpp,
6628                                        &pinfo) < 0)
6629                         goto out;
6630
6631                 path_idx++;
6632         }
6633
6634  out:
6635         cb->args[2] = path_idx;
6636         err = skb->len;
6637  out_err:
6638         rtnl_unlock();
6639         return err;
6640 }
6641
6642 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6643 {
6644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6645         struct net_device *dev = info->user_ptr[1];
6646         struct wireless_dev *wdev = dev->ieee80211_ptr;
6647         struct bss_parameters params;
6648         int err;
6649
6650         memset(&params, 0, sizeof(params));
6651         /* default to not changing parameters */
6652         params.use_cts_prot = -1;
6653         params.use_short_preamble = -1;
6654         params.use_short_slot_time = -1;
6655         params.ap_isolate = -1;
6656         params.ht_opmode = -1;
6657         params.p2p_ctwindow = -1;
6658         params.p2p_opp_ps = -1;
6659
6660         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6661                 params.use_cts_prot =
6662                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6663         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6664                 params.use_short_preamble =
6665                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6666         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6667                 params.use_short_slot_time =
6668                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6669         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6670                 params.basic_rates =
6671                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6672                 params.basic_rates_len =
6673                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6674         }
6675         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6676                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6677         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6678                 params.ht_opmode =
6679                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6680
6681         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6682                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6683                         return -EINVAL;
6684                 params.p2p_ctwindow =
6685                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6686                 if (params.p2p_ctwindow != 0 &&
6687                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6688                         return -EINVAL;
6689         }
6690
6691         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6692                 u8 tmp;
6693
6694                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6695                         return -EINVAL;
6696                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6697                 params.p2p_opp_ps = tmp;
6698                 if (params.p2p_opp_ps &&
6699                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6700                         return -EINVAL;
6701         }
6702
6703         if (!rdev->ops->change_bss)
6704                 return -EOPNOTSUPP;
6705
6706         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6707             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6708                 return -EOPNOTSUPP;
6709
6710         wdev_lock(wdev);
6711         err = rdev_change_bss(rdev, dev, &params);
6712         wdev_unlock(wdev);
6713
6714         return err;
6715 }
6716
6717 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6718 {
6719         char *data = NULL;
6720         bool is_indoor;
6721         enum nl80211_user_reg_hint_type user_reg_hint_type;
6722         u32 owner_nlportid;
6723
6724         /*
6725          * You should only get this when cfg80211 hasn't yet initialized
6726          * completely when built-in to the kernel right between the time
6727          * window between nl80211_init() and regulatory_init(), if that is
6728          * even possible.
6729          */
6730         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6731                 return -EINPROGRESS;
6732
6733         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6734                 user_reg_hint_type =
6735                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6736         else
6737                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6738
6739         switch (user_reg_hint_type) {
6740         case NL80211_USER_REG_HINT_USER:
6741         case NL80211_USER_REG_HINT_CELL_BASE:
6742                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6743                         return -EINVAL;
6744
6745                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6746                 return regulatory_hint_user(data, user_reg_hint_type);
6747         case NL80211_USER_REG_HINT_INDOOR:
6748                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6749                         owner_nlportid = info->snd_portid;
6750                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6751                 } else {
6752                         owner_nlportid = 0;
6753                         is_indoor = true;
6754                 }
6755
6756                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6757         default:
6758                 return -EINVAL;
6759         }
6760 }
6761
6762 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6763 {
6764         return reg_reload_regdb();
6765 }
6766
6767 static int nl80211_get_mesh_config(struct sk_buff *skb,
6768                                    struct genl_info *info)
6769 {
6770         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6771         struct net_device *dev = info->user_ptr[1];
6772         struct wireless_dev *wdev = dev->ieee80211_ptr;
6773         struct mesh_config cur_params;
6774         int err = 0;
6775         void *hdr;
6776         struct nlattr *pinfoattr;
6777         struct sk_buff *msg;
6778
6779         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6780                 return -EOPNOTSUPP;
6781
6782         if (!rdev->ops->get_mesh_config)
6783                 return -EOPNOTSUPP;
6784
6785         wdev_lock(wdev);
6786         /* If not connected, get default parameters */
6787         if (!wdev->mesh_id_len)
6788                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6789         else
6790                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6791         wdev_unlock(wdev);
6792
6793         if (err)
6794                 return err;
6795
6796         /* Draw up a netlink message to send back */
6797         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6798         if (!msg)
6799                 return -ENOMEM;
6800         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6801                              NL80211_CMD_GET_MESH_CONFIG);
6802         if (!hdr)
6803                 goto out;
6804         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6805         if (!pinfoattr)
6806                 goto nla_put_failure;
6807         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6808             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6809                         cur_params.dot11MeshRetryTimeout) ||
6810             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6811                         cur_params.dot11MeshConfirmTimeout) ||
6812             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6813                         cur_params.dot11MeshHoldingTimeout) ||
6814             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6815                         cur_params.dot11MeshMaxPeerLinks) ||
6816             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6817                        cur_params.dot11MeshMaxRetries) ||
6818             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6819                        cur_params.dot11MeshTTL) ||
6820             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6821                        cur_params.element_ttl) ||
6822             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6823                        cur_params.auto_open_plinks) ||
6824             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6825                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6826             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6827                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6828             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6829                         cur_params.path_refresh_time) ||
6830             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6831                         cur_params.min_discovery_timeout) ||
6832             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6833                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6834             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6835                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6836             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6837                         cur_params.dot11MeshHWMPperrMinInterval) ||
6838             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6839                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6840             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6841                        cur_params.dot11MeshHWMPRootMode) ||
6842             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6843                         cur_params.dot11MeshHWMPRannInterval) ||
6844             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6845                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6846             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6847                        cur_params.dot11MeshForwarding) ||
6848             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6849                         cur_params.rssi_threshold) ||
6850             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6851                         cur_params.ht_opmode) ||
6852             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6853                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6854             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6855                         cur_params.dot11MeshHWMProotInterval) ||
6856             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6857                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6858             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6859                         cur_params.power_mode) ||
6860             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6861                         cur_params.dot11MeshAwakeWindowDuration) ||
6862             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6863                         cur_params.plink_timeout) ||
6864             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6865                        cur_params.dot11MeshConnectedToMeshGate))
6866                 goto nla_put_failure;
6867         nla_nest_end(msg, pinfoattr);
6868         genlmsg_end(msg, hdr);
6869         return genlmsg_reply(msg, info);
6870
6871  nla_put_failure:
6872  out:
6873         nlmsg_free(msg);
6874         return -ENOBUFS;
6875 }
6876
6877 static const struct nla_policy
6878 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6879         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6880                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6881         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6882                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6883         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6884                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6885         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6886                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6887         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6888         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6889         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6890         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6891         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6892                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6893         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6894         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6895         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6896         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6897         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6898                 NLA_POLICY_MIN(NLA_U16, 1),
6899         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6900                 NLA_POLICY_MIN(NLA_U16, 1),
6901         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6902                 NLA_POLICY_MIN(NLA_U16, 1),
6903         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6904         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6905                 NLA_POLICY_MIN(NLA_U16, 1),
6906         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6907         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6908         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6909                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6910         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6911         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6912         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6913                 NLA_POLICY_MIN(NLA_U16, 1),
6914         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6915                 NLA_POLICY_MIN(NLA_U16, 1),
6916         [NL80211_MESHCONF_POWER_MODE] =
6917                 NLA_POLICY_RANGE(NLA_U32,
6918                                  NL80211_MESH_POWER_ACTIVE,
6919                                  NL80211_MESH_POWER_MAX),
6920         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6921         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6922         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6923 };
6924
6925 static const struct nla_policy
6926         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6927         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6928         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6929         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6930         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6931         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6932         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6933         [NL80211_MESH_SETUP_IE] =
6934                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6935                                        IEEE80211_MAX_DATA_LEN),
6936         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6937 };
6938
6939 static int nl80211_parse_mesh_config(struct genl_info *info,
6940                                      struct mesh_config *cfg,
6941                                      u32 *mask_out)
6942 {
6943         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6944         u32 mask = 0;
6945         u16 ht_opmode;
6946
6947 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6948 do {                                                                    \
6949         if (tb[attr]) {                                                 \
6950                 cfg->param = fn(tb[attr]);                              \
6951                 mask |= BIT((attr) - 1);                                \
6952         }                                                               \
6953 } while (0)
6954
6955         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6956                 return -EINVAL;
6957         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6958                 return -EINVAL;
6959
6960         /* This makes sure that there aren't more than 32 mesh config
6961          * parameters (otherwise our bitfield scheme would not work.) */
6962         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6963
6964         /* Fill in the params struct */
6965         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6966                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6967         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6968                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6969                                   nla_get_u16);
6970         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6971                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6972                                   nla_get_u16);
6973         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6974                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6975                                   nla_get_u16);
6976         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6977                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6978         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6979                                   NL80211_MESHCONF_TTL, nla_get_u8);
6980         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6981                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6982         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6983                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6984                                   nla_get_u8);
6985         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6986                                   mask,
6987                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6988                                   nla_get_u32);
6989         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6990                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6991                                   nla_get_u8);
6992         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6993                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6994                                   nla_get_u32);
6995         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6996             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6997                 return -EINVAL;
6998         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6999                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7000                                   nla_get_u16);
7001         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7002                                   mask,
7003                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7004                                   nla_get_u32);
7005         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7006             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7007              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7008                 return -EINVAL;
7009         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7010                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7011                                   nla_get_u16);
7012         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7013                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7014                                   nla_get_u16);
7015         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7016                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7017                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7018                                   nla_get_u16);
7019         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7020                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7021         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7022                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7023                                   nla_get_u16);
7024         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7025                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7026                                   nla_get_u8);
7027         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7028                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7029         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7030                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7031                                   nla_get_s32);
7032         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7033                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7034                                   nla_get_u8);
7035         /*
7036          * Check HT operation mode based on
7037          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7038          */
7039         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7040                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7041
7042                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7043                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7044                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7045                         return -EINVAL;
7046
7047                 /* NON_HT_STA bit is reserved, but some programs set it */
7048                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7049
7050                 cfg->ht_opmode = ht_opmode;
7051                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7052         }
7053         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7054                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7055                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7056                                   nla_get_u32);
7057         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7058             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7059              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7060                 return -EINVAL;
7061         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7062                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7063                                   nla_get_u16);
7064         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7065                                   mask,
7066                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7067                                   nla_get_u16);
7068         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7069                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7070         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7071                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7072         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7073                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7074         if (mask_out)
7075                 *mask_out = mask;
7076
7077         return 0;
7078
7079 #undef FILL_IN_MESH_PARAM_IF_SET
7080 }
7081
7082 static int nl80211_parse_mesh_setup(struct genl_info *info,
7083                                      struct mesh_setup *setup)
7084 {
7085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7086         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7087
7088         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7089                 return -EINVAL;
7090         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7091                 return -EINVAL;
7092
7093         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7094                 setup->sync_method =
7095                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7096                  IEEE80211_SYNC_METHOD_VENDOR :
7097                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7098
7099         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7100                 setup->path_sel_proto =
7101                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7102                  IEEE80211_PATH_PROTOCOL_VENDOR :
7103                  IEEE80211_PATH_PROTOCOL_HWMP;
7104
7105         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7106                 setup->path_metric =
7107                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7108                  IEEE80211_PATH_METRIC_VENDOR :
7109                  IEEE80211_PATH_METRIC_AIRTIME;
7110
7111         if (tb[NL80211_MESH_SETUP_IE]) {
7112                 struct nlattr *ieattr =
7113                         tb[NL80211_MESH_SETUP_IE];
7114                 setup->ie = nla_data(ieattr);
7115                 setup->ie_len = nla_len(ieattr);
7116         }
7117         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7118             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7119                 return -EINVAL;
7120         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7121         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7122         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7123         if (setup->is_secure)
7124                 setup->user_mpm = true;
7125
7126         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7127                 if (!setup->user_mpm)
7128                         return -EINVAL;
7129                 setup->auth_id =
7130                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7131         }
7132
7133         return 0;
7134 }
7135
7136 static int nl80211_update_mesh_config(struct sk_buff *skb,
7137                                       struct genl_info *info)
7138 {
7139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7140         struct net_device *dev = info->user_ptr[1];
7141         struct wireless_dev *wdev = dev->ieee80211_ptr;
7142         struct mesh_config cfg;
7143         u32 mask;
7144         int err;
7145
7146         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7147                 return -EOPNOTSUPP;
7148
7149         if (!rdev->ops->update_mesh_config)
7150                 return -EOPNOTSUPP;
7151
7152         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7153         if (err)
7154                 return err;
7155
7156         wdev_lock(wdev);
7157         if (!wdev->mesh_id_len)
7158                 err = -ENOLINK;
7159
7160         if (!err)
7161                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7162
7163         wdev_unlock(wdev);
7164
7165         return err;
7166 }
7167
7168 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7169                               struct sk_buff *msg)
7170 {
7171         struct nlattr *nl_reg_rules;
7172         unsigned int i;
7173
7174         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7175             (regdom->dfs_region &&
7176              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7177                 goto nla_put_failure;
7178
7179         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7180         if (!nl_reg_rules)
7181                 goto nla_put_failure;
7182
7183         for (i = 0; i < regdom->n_reg_rules; i++) {
7184                 struct nlattr *nl_reg_rule;
7185                 const struct ieee80211_reg_rule *reg_rule;
7186                 const struct ieee80211_freq_range *freq_range;
7187                 const struct ieee80211_power_rule *power_rule;
7188                 unsigned int max_bandwidth_khz;
7189
7190                 reg_rule = &regdom->reg_rules[i];
7191                 freq_range = &reg_rule->freq_range;
7192                 power_rule = &reg_rule->power_rule;
7193
7194                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7195                 if (!nl_reg_rule)
7196                         goto nla_put_failure;
7197
7198                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7199                 if (!max_bandwidth_khz)
7200                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7201                                                                   reg_rule);
7202
7203                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7204                                 reg_rule->flags) ||
7205                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7206                                 freq_range->start_freq_khz) ||
7207                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7208                                 freq_range->end_freq_khz) ||
7209                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7210                                 max_bandwidth_khz) ||
7211                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7212                                 power_rule->max_antenna_gain) ||
7213                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7214                                 power_rule->max_eirp) ||
7215                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7216                                 reg_rule->dfs_cac_ms))
7217                         goto nla_put_failure;
7218
7219                 nla_nest_end(msg, nl_reg_rule);
7220         }
7221
7222         nla_nest_end(msg, nl_reg_rules);
7223         return 0;
7224
7225 nla_put_failure:
7226         return -EMSGSIZE;
7227 }
7228
7229 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7230 {
7231         const struct ieee80211_regdomain *regdom = NULL;
7232         struct cfg80211_registered_device *rdev;
7233         struct wiphy *wiphy = NULL;
7234         struct sk_buff *msg;
7235         void *hdr;
7236
7237         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7238         if (!msg)
7239                 return -ENOBUFS;
7240
7241         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7242                              NL80211_CMD_GET_REG);
7243         if (!hdr)
7244                 goto put_failure;
7245
7246         if (info->attrs[NL80211_ATTR_WIPHY]) {
7247                 bool self_managed;
7248
7249                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7250                 if (IS_ERR(rdev)) {
7251                         nlmsg_free(msg);
7252                         return PTR_ERR(rdev);
7253                 }
7254
7255                 wiphy = &rdev->wiphy;
7256                 self_managed = wiphy->regulatory_flags &
7257                                REGULATORY_WIPHY_SELF_MANAGED;
7258                 regdom = get_wiphy_regdom(wiphy);
7259
7260                 /* a self-managed-reg device must have a private regdom */
7261                 if (WARN_ON(!regdom && self_managed)) {
7262                         nlmsg_free(msg);
7263                         return -EINVAL;
7264                 }
7265
7266                 if (regdom &&
7267                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7268                         goto nla_put_failure;
7269         }
7270
7271         if (!wiphy && reg_last_request_cell_base() &&
7272             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7273                         NL80211_USER_REG_HINT_CELL_BASE))
7274                 goto nla_put_failure;
7275
7276         rcu_read_lock();
7277
7278         if (!regdom)
7279                 regdom = rcu_dereference(cfg80211_regdomain);
7280
7281         if (nl80211_put_regdom(regdom, msg))
7282                 goto nla_put_failure_rcu;
7283
7284         rcu_read_unlock();
7285
7286         genlmsg_end(msg, hdr);
7287         return genlmsg_reply(msg, info);
7288
7289 nla_put_failure_rcu:
7290         rcu_read_unlock();
7291 nla_put_failure:
7292 put_failure:
7293         nlmsg_free(msg);
7294         return -EMSGSIZE;
7295 }
7296
7297 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7298                                u32 seq, int flags, struct wiphy *wiphy,
7299                                const struct ieee80211_regdomain *regdom)
7300 {
7301         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7302                                    NL80211_CMD_GET_REG);
7303
7304         if (!hdr)
7305                 return -1;
7306
7307         genl_dump_check_consistent(cb, hdr);
7308
7309         if (nl80211_put_regdom(regdom, msg))
7310                 goto nla_put_failure;
7311
7312         if (!wiphy && reg_last_request_cell_base() &&
7313             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7314                         NL80211_USER_REG_HINT_CELL_BASE))
7315                 goto nla_put_failure;
7316
7317         if (wiphy &&
7318             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7319                 goto nla_put_failure;
7320
7321         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7322             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7323                 goto nla_put_failure;
7324
7325         genlmsg_end(msg, hdr);
7326         return 0;
7327
7328 nla_put_failure:
7329         genlmsg_cancel(msg, hdr);
7330         return -EMSGSIZE;
7331 }
7332
7333 static int nl80211_get_reg_dump(struct sk_buff *skb,
7334                                 struct netlink_callback *cb)
7335 {
7336         const struct ieee80211_regdomain *regdom = NULL;
7337         struct cfg80211_registered_device *rdev;
7338         int err, reg_idx, start = cb->args[2];
7339
7340         rtnl_lock();
7341
7342         if (cfg80211_regdomain && start == 0) {
7343                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7344                                           NLM_F_MULTI, NULL,
7345                                           rtnl_dereference(cfg80211_regdomain));
7346                 if (err < 0)
7347                         goto out_err;
7348         }
7349
7350         /* the global regdom is idx 0 */
7351         reg_idx = 1;
7352         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7353                 regdom = get_wiphy_regdom(&rdev->wiphy);
7354                 if (!regdom)
7355                         continue;
7356
7357                 if (++reg_idx <= start)
7358                         continue;
7359
7360                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7361                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7362                 if (err < 0) {
7363                         reg_idx--;
7364                         break;
7365                 }
7366         }
7367
7368         cb->args[2] = reg_idx;
7369         err = skb->len;
7370 out_err:
7371         rtnl_unlock();
7372         return err;
7373 }
7374
7375 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7376 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7377         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7378         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7379         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7380         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7381         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7382         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7383         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7384 };
7385
7386 static int parse_reg_rule(struct nlattr *tb[],
7387         struct ieee80211_reg_rule *reg_rule)
7388 {
7389         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7390         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7391
7392         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7393                 return -EINVAL;
7394         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7395                 return -EINVAL;
7396         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7397                 return -EINVAL;
7398         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7399                 return -EINVAL;
7400         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7401                 return -EINVAL;
7402
7403         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7404
7405         freq_range->start_freq_khz =
7406                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7407         freq_range->end_freq_khz =
7408                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7409         freq_range->max_bandwidth_khz =
7410                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7411
7412         power_rule->max_eirp =
7413                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7414
7415         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7416                 power_rule->max_antenna_gain =
7417                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7418
7419         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7420                 reg_rule->dfs_cac_ms =
7421                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7422
7423         return 0;
7424 }
7425
7426 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7427 {
7428         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7429         struct nlattr *nl_reg_rule;
7430         char *alpha2;
7431         int rem_reg_rules, r;
7432         u32 num_rules = 0, rule_idx = 0;
7433         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7434         struct ieee80211_regdomain *rd;
7435
7436         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7437                 return -EINVAL;
7438
7439         if (!info->attrs[NL80211_ATTR_REG_RULES])
7440                 return -EINVAL;
7441
7442         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7443
7444         if (info->attrs[NL80211_ATTR_DFS_REGION])
7445                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7446
7447         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7448                             rem_reg_rules) {
7449                 num_rules++;
7450                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7451                         return -EINVAL;
7452         }
7453
7454         if (!reg_is_valid_request(alpha2))
7455                 return -EINVAL;
7456
7457         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7458         if (!rd)
7459                 return -ENOMEM;
7460
7461         rd->n_reg_rules = num_rules;
7462         rd->alpha2[0] = alpha2[0];
7463         rd->alpha2[1] = alpha2[1];
7464
7465         /*
7466          * Disable DFS master mode if the DFS region was
7467          * not supported or known on this kernel.
7468          */
7469         if (reg_supported_dfs_region(dfs_region))
7470                 rd->dfs_region = dfs_region;
7471
7472         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7473                             rem_reg_rules) {
7474                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7475                                                 nl_reg_rule, reg_rule_policy,
7476                                                 info->extack);
7477                 if (r)
7478                         goto bad_reg;
7479                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7480                 if (r)
7481                         goto bad_reg;
7482
7483                 rule_idx++;
7484
7485                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7486                         r = -EINVAL;
7487                         goto bad_reg;
7488                 }
7489         }
7490
7491         /* set_regdom takes ownership of rd */
7492         return set_regdom(rd, REGD_SOURCE_CRDA);
7493  bad_reg:
7494         kfree(rd);
7495         return r;
7496 }
7497 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7498
7499 static int validate_scan_freqs(struct nlattr *freqs)
7500 {
7501         struct nlattr *attr1, *attr2;
7502         int n_channels = 0, tmp1, tmp2;
7503
7504         nla_for_each_nested(attr1, freqs, tmp1)
7505                 if (nla_len(attr1) != sizeof(u32))
7506                         return 0;
7507
7508         nla_for_each_nested(attr1, freqs, tmp1) {
7509                 n_channels++;
7510                 /*
7511                  * Some hardware has a limited channel list for
7512                  * scanning, and it is pretty much nonsensical
7513                  * to scan for a channel twice, so disallow that
7514                  * and don't require drivers to check that the
7515                  * channel list they get isn't longer than what
7516                  * they can scan, as long as they can scan all
7517                  * the channels they registered at once.
7518                  */
7519                 nla_for_each_nested(attr2, freqs, tmp2)
7520                         if (attr1 != attr2 &&
7521                             nla_get_u32(attr1) == nla_get_u32(attr2))
7522                                 return 0;
7523         }
7524
7525         return n_channels;
7526 }
7527
7528 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7529 {
7530         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7531 }
7532
7533 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7534                             struct cfg80211_bss_selection *bss_select)
7535 {
7536         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7537         struct nlattr *nest;
7538         int err;
7539         bool found = false;
7540         int i;
7541
7542         /* only process one nested attribute */
7543         nest = nla_data(nla);
7544         if (!nla_ok(nest, nla_len(nest)))
7545                 return -EINVAL;
7546
7547         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7548                                           nest, nl80211_bss_select_policy,
7549                                           NULL);
7550         if (err)
7551                 return err;
7552
7553         /* only one attribute may be given */
7554         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7555                 if (attr[i]) {
7556                         if (found)
7557                                 return -EINVAL;
7558                         found = true;
7559                 }
7560         }
7561
7562         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7563
7564         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7565                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7566
7567         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7568                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7569                 bss_select->param.band_pref =
7570                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7571                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7572                         return -EINVAL;
7573         }
7574
7575         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7576                 struct nl80211_bss_select_rssi_adjust *adj_param;
7577
7578                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7579                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7580                 bss_select->param.adjust.band = adj_param->band;
7581                 bss_select->param.adjust.delta = adj_param->delta;
7582                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7583                         return -EINVAL;
7584         }
7585
7586         /* user-space did not provide behaviour attribute */
7587         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7588                 return -EINVAL;
7589
7590         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7591                 return -EINVAL;
7592
7593         return 0;
7594 }
7595
7596 int nl80211_parse_random_mac(struct nlattr **attrs,
7597                              u8 *mac_addr, u8 *mac_addr_mask)
7598 {
7599         int i;
7600
7601         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7602                 eth_zero_addr(mac_addr);
7603                 eth_zero_addr(mac_addr_mask);
7604                 mac_addr[0] = 0x2;
7605                 mac_addr_mask[0] = 0x3;
7606
7607                 return 0;
7608         }
7609
7610         /* need both or none */
7611         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7612                 return -EINVAL;
7613
7614         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7615         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7616
7617         /* don't allow or configure an mcast address */
7618         if (!is_multicast_ether_addr(mac_addr_mask) ||
7619             is_multicast_ether_addr(mac_addr))
7620                 return -EINVAL;
7621
7622         /*
7623          * allow users to pass a MAC address that has bits set outside
7624          * of the mask, but don't bother drivers with having to deal
7625          * with such bits
7626          */
7627         for (i = 0; i < ETH_ALEN; i++)
7628                 mac_addr[i] &= mac_addr_mask[i];
7629
7630         return 0;
7631 }
7632
7633 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7634 {
7635         ASSERT_WDEV_LOCK(wdev);
7636
7637         if (!cfg80211_beaconing_iface_active(wdev))
7638                 return true;
7639
7640         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7641                 return true;
7642
7643         return regulatory_pre_cac_allowed(wdev->wiphy);
7644 }
7645
7646 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7647                                     enum nl80211_ext_feature_index feat)
7648 {
7649         if (!(flags & flag))
7650                 return true;
7651         if (wiphy_ext_feature_isset(wiphy, feat))
7652                 return true;
7653         return false;
7654 }
7655
7656 static int
7657 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7658                          void *request, struct nlattr **attrs,
7659                          bool is_sched_scan)
7660 {
7661         u8 *mac_addr, *mac_addr_mask;
7662         u32 *flags;
7663         enum nl80211_feature_flags randomness_flag;
7664
7665         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7666                 return 0;
7667
7668         if (is_sched_scan) {
7669                 struct cfg80211_sched_scan_request *req = request;
7670
7671                 randomness_flag = wdev ?
7672                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7673                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7674                 flags = &req->flags;
7675                 mac_addr = req->mac_addr;
7676                 mac_addr_mask = req->mac_addr_mask;
7677         } else {
7678                 struct cfg80211_scan_request *req = request;
7679
7680                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7681                 flags = &req->flags;
7682                 mac_addr = req->mac_addr;
7683                 mac_addr_mask = req->mac_addr_mask;
7684         }
7685
7686         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7687
7688         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7689              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7690             !nl80211_check_scan_feat(wiphy, *flags,
7691                                      NL80211_SCAN_FLAG_LOW_SPAN,
7692                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7693             !nl80211_check_scan_feat(wiphy, *flags,
7694                                      NL80211_SCAN_FLAG_LOW_POWER,
7695                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7696             !nl80211_check_scan_feat(wiphy, *flags,
7697                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7698                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7699             !nl80211_check_scan_feat(wiphy, *flags,
7700                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7701                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7702             !nl80211_check_scan_feat(wiphy, *flags,
7703                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7704                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7705             !nl80211_check_scan_feat(wiphy, *flags,
7706                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7707                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7708             !nl80211_check_scan_feat(wiphy, *flags,
7709                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7710                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7711             !nl80211_check_scan_feat(wiphy, *flags,
7712                                      NL80211_SCAN_FLAG_RANDOM_SN,
7713                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7714             !nl80211_check_scan_feat(wiphy, *flags,
7715                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7716                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7717                 return -EOPNOTSUPP;
7718
7719         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7720                 int err;
7721
7722                 if (!(wiphy->features & randomness_flag) ||
7723                     (wdev && wdev->current_bss))
7724                         return -EOPNOTSUPP;
7725
7726                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7727                 if (err)
7728                         return err;
7729         }
7730
7731         return 0;
7732 }
7733
7734 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7735 {
7736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7737         struct wireless_dev *wdev = info->user_ptr[1];
7738         struct cfg80211_scan_request *request;
7739         struct nlattr *attr;
7740         struct wiphy *wiphy;
7741         int err, tmp, n_ssids = 0, n_channels, i;
7742         size_t ie_len;
7743
7744         wiphy = &rdev->wiphy;
7745
7746         if (wdev->iftype == NL80211_IFTYPE_NAN)
7747                 return -EOPNOTSUPP;
7748
7749         if (!rdev->ops->scan)
7750                 return -EOPNOTSUPP;
7751
7752         if (rdev->scan_req || rdev->scan_msg) {
7753                 err = -EBUSY;
7754                 goto unlock;
7755         }
7756
7757         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7758                 n_channels = validate_scan_freqs(
7759                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7760                 if (!n_channels) {
7761                         err = -EINVAL;
7762                         goto unlock;
7763                 }
7764         } else {
7765                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7766         }
7767
7768         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7769                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7770                         n_ssids++;
7771
7772         if (n_ssids > wiphy->max_scan_ssids) {
7773                 err = -EINVAL;
7774                 goto unlock;
7775         }
7776
7777         if (info->attrs[NL80211_ATTR_IE])
7778                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7779         else
7780                 ie_len = 0;
7781
7782         if (ie_len > wiphy->max_scan_ie_len) {
7783                 err = -EINVAL;
7784                 goto unlock;
7785         }
7786
7787         request = kzalloc(sizeof(*request)
7788                         + sizeof(*request->ssids) * n_ssids
7789                         + sizeof(*request->channels) * n_channels
7790                         + ie_len, GFP_KERNEL);
7791         if (!request) {
7792                 err = -ENOMEM;
7793                 goto unlock;
7794         }
7795
7796         if (n_ssids)
7797                 request->ssids = (void *)&request->channels[n_channels];
7798         request->n_ssids = n_ssids;
7799         if (ie_len) {
7800                 if (n_ssids)
7801                         request->ie = (void *)(request->ssids + n_ssids);
7802                 else
7803                         request->ie = (void *)(request->channels + n_channels);
7804         }
7805
7806         i = 0;
7807         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7808                 /* user specified, bail out if channel not found */
7809                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7810                         struct ieee80211_channel *chan;
7811
7812                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7813
7814                         if (!chan) {
7815                                 err = -EINVAL;
7816                                 goto out_free;
7817                         }
7818
7819                         /* ignore disabled channels */
7820                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7821                                 continue;
7822
7823                         request->channels[i] = chan;
7824                         i++;
7825                 }
7826         } else {
7827                 enum nl80211_band band;
7828
7829                 /* all channels */
7830                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7831                         int j;
7832
7833                         if (!wiphy->bands[band])
7834                                 continue;
7835                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7836                                 struct ieee80211_channel *chan;
7837
7838                                 chan = &wiphy->bands[band]->channels[j];
7839
7840                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7841                                         continue;
7842
7843                                 request->channels[i] = chan;
7844                                 i++;
7845                         }
7846                 }
7847         }
7848
7849         if (!i) {
7850                 err = -EINVAL;
7851                 goto out_free;
7852         }
7853
7854         request->n_channels = i;
7855
7856         wdev_lock(wdev);
7857         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7858                 struct ieee80211_channel *chan;
7859
7860                 if (request->n_channels != 1) {
7861                         wdev_unlock(wdev);
7862                         err = -EBUSY;
7863                         goto out_free;
7864                 }
7865
7866                 chan = request->channels[0];
7867                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7868                         wdev_unlock(wdev);
7869                         err = -EBUSY;
7870                         goto out_free;
7871                 }
7872         }
7873         wdev_unlock(wdev);
7874
7875         i = 0;
7876         if (n_ssids) {
7877                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7878                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7879                                 err = -EINVAL;
7880                                 goto out_free;
7881                         }
7882                         request->ssids[i].ssid_len = nla_len(attr);
7883                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7884                         i++;
7885                 }
7886         }
7887
7888         if (info->attrs[NL80211_ATTR_IE]) {
7889                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7890                 memcpy((void *)request->ie,
7891                        nla_data(info->attrs[NL80211_ATTR_IE]),
7892                        request->ie_len);
7893         }
7894
7895         for (i = 0; i < NUM_NL80211_BANDS; i++)
7896                 if (wiphy->bands[i])
7897                         request->rates[i] =
7898                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7899
7900         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7901                 nla_for_each_nested(attr,
7902                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7903                                     tmp) {
7904                         enum nl80211_band band = nla_type(attr);
7905
7906                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7907                                 err = -EINVAL;
7908                                 goto out_free;
7909                         }
7910
7911                         if (!wiphy->bands[band])
7912                                 continue;
7913
7914                         err = ieee80211_get_ratemask(wiphy->bands[band],
7915                                                      nla_data(attr),
7916                                                      nla_len(attr),
7917                                                      &request->rates[band]);
7918                         if (err)
7919                                 goto out_free;
7920                 }
7921         }
7922
7923         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7924                 if (!wiphy_ext_feature_isset(wiphy,
7925                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7926                         err = -EOPNOTSUPP;
7927                         goto out_free;
7928                 }
7929
7930                 request->duration =
7931                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7932                 request->duration_mandatory =
7933                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7934         }
7935
7936         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7937                                        false);
7938         if (err)
7939                 goto out_free;
7940
7941         request->no_cck =
7942                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7943
7944         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7945          * BSSID to scan for. This was problematic because that same attribute
7946          * was already used for another purpose (local random MAC address). The
7947          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7948          * compatibility with older userspace components, also use the
7949          * NL80211_ATTR_MAC value here if it can be determined to be used for
7950          * the specific BSSID use case instead of the random MAC address
7951          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7952          */
7953         if (info->attrs[NL80211_ATTR_BSSID])
7954                 memcpy(request->bssid,
7955                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7956         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7957                  info->attrs[NL80211_ATTR_MAC])
7958                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7959                        ETH_ALEN);
7960         else
7961                 eth_broadcast_addr(request->bssid);
7962
7963         request->wdev = wdev;
7964         request->wiphy = &rdev->wiphy;
7965         request->scan_start = jiffies;
7966
7967         rdev->scan_req = request;
7968         err = rdev_scan(rdev, request);
7969
7970         if (!err) {
7971                 nl80211_send_scan_start(rdev, wdev);
7972                 if (wdev->netdev)
7973                         dev_hold(wdev->netdev);
7974         } else {
7975  out_free:
7976                 rdev->scan_req = NULL;
7977                 kfree(request);
7978         }
7979
7980  unlock:
7981         return err;
7982 }
7983
7984 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7985 {
7986         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7987         struct wireless_dev *wdev = info->user_ptr[1];
7988
7989         if (!rdev->ops->abort_scan)
7990                 return -EOPNOTSUPP;
7991
7992         if (rdev->scan_msg)
7993                 return 0;
7994
7995         if (!rdev->scan_req)
7996                 return -ENOENT;
7997
7998         rdev_abort_scan(rdev, wdev);
7999         return 0;
8000 }
8001
8002 static int
8003 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8004                                struct cfg80211_sched_scan_request *request,
8005                                struct nlattr **attrs)
8006 {
8007         int tmp, err, i = 0;
8008         struct nlattr *attr;
8009
8010         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8011                 u32 interval;
8012
8013                 /*
8014                  * If scan plans are not specified,
8015                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8016                  * case one scan plan will be set with the specified scan
8017                  * interval and infinite number of iterations.
8018                  */
8019                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8020                 if (!interval)
8021                         return -EINVAL;
8022
8023                 request->scan_plans[0].interval =
8024                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8025                 if (!request->scan_plans[0].interval)
8026                         return -EINVAL;
8027
8028                 if (request->scan_plans[0].interval >
8029                     wiphy->max_sched_scan_plan_interval)
8030                         request->scan_plans[0].interval =
8031                                 wiphy->max_sched_scan_plan_interval;
8032
8033                 return 0;
8034         }
8035
8036         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8037                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8038
8039                 if (WARN_ON(i >= n_plans))
8040                         return -EINVAL;
8041
8042                 err = nla_parse_nested_deprecated(plan,
8043                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8044                                                   attr, nl80211_plan_policy,
8045                                                   NULL);
8046                 if (err)
8047                         return err;
8048
8049                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8050                         return -EINVAL;
8051
8052                 request->scan_plans[i].interval =
8053                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8054                 if (!request->scan_plans[i].interval ||
8055                     request->scan_plans[i].interval >
8056                     wiphy->max_sched_scan_plan_interval)
8057                         return -EINVAL;
8058
8059                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8060                         request->scan_plans[i].iterations =
8061                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8062                         if (!request->scan_plans[i].iterations ||
8063                             (request->scan_plans[i].iterations >
8064                              wiphy->max_sched_scan_plan_iterations))
8065                                 return -EINVAL;
8066                 } else if (i < n_plans - 1) {
8067                         /*
8068                          * All scan plans but the last one must specify
8069                          * a finite number of iterations
8070                          */
8071                         return -EINVAL;
8072                 }
8073
8074                 i++;
8075         }
8076
8077         /*
8078          * The last scan plan must not specify the number of
8079          * iterations, it is supposed to run infinitely
8080          */
8081         if (request->scan_plans[n_plans - 1].iterations)
8082                 return  -EINVAL;
8083
8084         return 0;
8085 }
8086
8087 static int
8088 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8089                                        struct cfg80211_match_set *match_sets,
8090                                        struct nlattr *tb_band_rssi,
8091                                        s32 rssi_thold)
8092 {
8093         struct nlattr *attr;
8094         int i, tmp, ret = 0;
8095
8096         if (!wiphy_ext_feature_isset(wiphy,
8097                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8098                 if (tb_band_rssi)
8099                         ret = -EOPNOTSUPP;
8100                 else
8101                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8102                                 match_sets->per_band_rssi_thold[i] =
8103                                         NL80211_SCAN_RSSI_THOLD_OFF;
8104                 return ret;
8105         }
8106
8107         for (i = 0; i < NUM_NL80211_BANDS; i++)
8108                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8109
8110         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8111                 enum nl80211_band band = nla_type(attr);
8112
8113                 if (band < 0 || band >= NUM_NL80211_BANDS)
8114                         return -EINVAL;
8115
8116                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8117         }
8118
8119         return 0;
8120 }
8121
8122 static struct cfg80211_sched_scan_request *
8123 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8124                          struct nlattr **attrs, int max_match_sets)
8125 {
8126         struct cfg80211_sched_scan_request *request;
8127         struct nlattr *attr;
8128         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8129         enum nl80211_band band;
8130         size_t ie_len;
8131         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8132         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8133
8134         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8135                 n_channels = validate_scan_freqs(
8136                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8137                 if (!n_channels)
8138                         return ERR_PTR(-EINVAL);
8139         } else {
8140                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8141         }
8142
8143         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8144                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8145                                     tmp)
8146                         n_ssids++;
8147
8148         if (n_ssids > wiphy->max_sched_scan_ssids)
8149                 return ERR_PTR(-EINVAL);
8150
8151         /*
8152          * First, count the number of 'real' matchsets. Due to an issue with
8153          * the old implementation, matchsets containing only the RSSI attribute
8154          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8155          * RSSI for all matchsets, rather than their own matchset for reporting
8156          * all APs with a strong RSSI. This is needed to be compatible with
8157          * older userspace that treated a matchset with only the RSSI as the
8158          * global RSSI for all other matchsets - if there are other matchsets.
8159          */
8160         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8161                 nla_for_each_nested(attr,
8162                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8163                                     tmp) {
8164                         struct nlattr *rssi;
8165
8166                         err = nla_parse_nested_deprecated(tb,
8167                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8168                                                           attr,
8169                                                           nl80211_match_policy,
8170                                                           NULL);
8171                         if (err)
8172                                 return ERR_PTR(err);
8173
8174                         /* SSID and BSSID are mutually exclusive */
8175                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8176                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8177                                 return ERR_PTR(-EINVAL);
8178
8179                         /* add other standalone attributes here */
8180                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8181                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8182                                 n_match_sets++;
8183                                 continue;
8184                         }
8185                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8186                         if (rssi)
8187                                 default_match_rssi = nla_get_s32(rssi);
8188                 }
8189         }
8190
8191         /* However, if there's no other matchset, add the RSSI one */
8192         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8193                 n_match_sets = 1;
8194
8195         if (n_match_sets > max_match_sets)
8196                 return ERR_PTR(-EINVAL);
8197
8198         if (attrs[NL80211_ATTR_IE])
8199                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8200         else
8201                 ie_len = 0;
8202
8203         if (ie_len > wiphy->max_sched_scan_ie_len)
8204                 return ERR_PTR(-EINVAL);
8205
8206         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8207                 /*
8208                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8209                  * each scan plan already specifies its own interval
8210                  */
8211                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8212                         return ERR_PTR(-EINVAL);
8213
8214                 nla_for_each_nested(attr,
8215                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8216                         n_plans++;
8217         } else {
8218                 /*
8219                  * The scan interval attribute is kept for backward
8220                  * compatibility. If no scan plans are specified and sched scan
8221                  * interval is specified, one scan plan will be set with this
8222                  * scan interval and infinite number of iterations.
8223                  */
8224                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8225                         return ERR_PTR(-EINVAL);
8226
8227                 n_plans = 1;
8228         }
8229
8230         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8231                 return ERR_PTR(-EINVAL);
8232
8233         if (!wiphy_ext_feature_isset(
8234                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8235             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8236              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8237                 return ERR_PTR(-EINVAL);
8238
8239         request = kzalloc(sizeof(*request)
8240                         + sizeof(*request->ssids) * n_ssids
8241                         + sizeof(*request->match_sets) * n_match_sets
8242                         + sizeof(*request->scan_plans) * n_plans
8243                         + sizeof(*request->channels) * n_channels
8244                         + ie_len, GFP_KERNEL);
8245         if (!request)
8246                 return ERR_PTR(-ENOMEM);
8247
8248         if (n_ssids)
8249                 request->ssids = (void *)&request->channels[n_channels];
8250         request->n_ssids = n_ssids;
8251         if (ie_len) {
8252                 if (n_ssids)
8253                         request->ie = (void *)(request->ssids + n_ssids);
8254                 else
8255                         request->ie = (void *)(request->channels + n_channels);
8256         }
8257
8258         if (n_match_sets) {
8259                 if (request->ie)
8260                         request->match_sets = (void *)(request->ie + ie_len);
8261                 else if (n_ssids)
8262                         request->match_sets =
8263                                 (void *)(request->ssids + n_ssids);
8264                 else
8265                         request->match_sets =
8266                                 (void *)(request->channels + n_channels);
8267         }
8268         request->n_match_sets = n_match_sets;
8269
8270         if (n_match_sets)
8271                 request->scan_plans = (void *)(request->match_sets +
8272                                                n_match_sets);
8273         else if (request->ie)
8274                 request->scan_plans = (void *)(request->ie + ie_len);
8275         else if (n_ssids)
8276                 request->scan_plans = (void *)(request->ssids + n_ssids);
8277         else
8278                 request->scan_plans = (void *)(request->channels + n_channels);
8279
8280         request->n_scan_plans = n_plans;
8281
8282         i = 0;
8283         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8284                 /* user specified, bail out if channel not found */
8285                 nla_for_each_nested(attr,
8286                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8287                                     tmp) {
8288                         struct ieee80211_channel *chan;
8289
8290                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8291
8292                         if (!chan) {
8293                                 err = -EINVAL;
8294                                 goto out_free;
8295                         }
8296
8297                         /* ignore disabled channels */
8298                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8299                                 continue;
8300
8301                         request->channels[i] = chan;
8302                         i++;
8303                 }
8304         } else {
8305                 /* all channels */
8306                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8307                         int j;
8308
8309                         if (!wiphy->bands[band])
8310                                 continue;
8311                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8312                                 struct ieee80211_channel *chan;
8313
8314                                 chan = &wiphy->bands[band]->channels[j];
8315
8316                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8317                                         continue;
8318
8319                                 request->channels[i] = chan;
8320                                 i++;
8321                         }
8322                 }
8323         }
8324
8325         if (!i) {
8326                 err = -EINVAL;
8327                 goto out_free;
8328         }
8329
8330         request->n_channels = i;
8331
8332         i = 0;
8333         if (n_ssids) {
8334                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8335                                     tmp) {
8336                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8337                                 err = -EINVAL;
8338                                 goto out_free;
8339                         }
8340                         request->ssids[i].ssid_len = nla_len(attr);
8341                         memcpy(request->ssids[i].ssid, nla_data(attr),
8342                                nla_len(attr));
8343                         i++;
8344                 }
8345         }
8346
8347         i = 0;
8348         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8349                 nla_for_each_nested(attr,
8350                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8351                                     tmp) {
8352                         struct nlattr *ssid, *bssid, *rssi;
8353
8354                         err = nla_parse_nested_deprecated(tb,
8355                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8356                                                           attr,
8357                                                           nl80211_match_policy,
8358                                                           NULL);
8359                         if (err)
8360                                 goto out_free;
8361                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8362                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8363
8364                         if (!ssid && !bssid) {
8365                                 i++;
8366                                 continue;
8367                         }
8368
8369                         if (WARN_ON(i >= n_match_sets)) {
8370                                 /* this indicates a programming error,
8371                                  * the loop above should have verified
8372                                  * things properly
8373                                  */
8374                                 err = -EINVAL;
8375                                 goto out_free;
8376                         }
8377
8378                         if (ssid) {
8379                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8380                                         err = -EINVAL;
8381                                         goto out_free;
8382                                 }
8383                                 memcpy(request->match_sets[i].ssid.ssid,
8384                                        nla_data(ssid), nla_len(ssid));
8385                                 request->match_sets[i].ssid.ssid_len =
8386                                         nla_len(ssid);
8387                         }
8388                         if (bssid) {
8389                                 if (nla_len(bssid) != ETH_ALEN) {
8390                                         err = -EINVAL;
8391                                         goto out_free;
8392                                 }
8393                                 memcpy(request->match_sets[i].bssid,
8394                                        nla_data(bssid), ETH_ALEN);
8395                         }
8396
8397                         /* special attribute - old implementation w/a */
8398                         request->match_sets[i].rssi_thold = default_match_rssi;
8399                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8400                         if (rssi)
8401                                 request->match_sets[i].rssi_thold =
8402                                         nla_get_s32(rssi);
8403
8404                         /* Parse per band RSSI attribute */
8405                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8406                                 &request->match_sets[i],
8407                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8408                                 request->match_sets[i].rssi_thold);
8409                         if (err)
8410                                 goto out_free;
8411
8412                         i++;
8413                 }
8414
8415                 /* there was no other matchset, so the RSSI one is alone */
8416                 if (i == 0 && n_match_sets)
8417                         request->match_sets[0].rssi_thold = default_match_rssi;
8418
8419                 request->min_rssi_thold = INT_MAX;
8420                 for (i = 0; i < n_match_sets; i++)
8421                         request->min_rssi_thold =
8422                                 min(request->match_sets[i].rssi_thold,
8423                                     request->min_rssi_thold);
8424         } else {
8425                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8426         }
8427
8428         if (ie_len) {
8429                 request->ie_len = ie_len;
8430                 memcpy((void *)request->ie,
8431                        nla_data(attrs[NL80211_ATTR_IE]),
8432                        request->ie_len);
8433         }
8434
8435         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8436         if (err)
8437                 goto out_free;
8438
8439         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8440                 request->delay =
8441                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8442
8443         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8444                 request->relative_rssi = nla_get_s8(
8445                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8446                 request->relative_rssi_set = true;
8447         }
8448
8449         if (request->relative_rssi_set &&
8450             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8451                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8452
8453                 rssi_adjust = nla_data(
8454                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8455                 request->rssi_adjust.band = rssi_adjust->band;
8456                 request->rssi_adjust.delta = rssi_adjust->delta;
8457                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8458                         err = -EINVAL;
8459                         goto out_free;
8460                 }
8461         }
8462
8463         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8464         if (err)
8465                 goto out_free;
8466
8467         request->scan_start = jiffies;
8468
8469         return request;
8470
8471 out_free:
8472         kfree(request);
8473         return ERR_PTR(err);
8474 }
8475
8476 static int nl80211_start_sched_scan(struct sk_buff *skb,
8477                                     struct genl_info *info)
8478 {
8479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8480         struct net_device *dev = info->user_ptr[1];
8481         struct wireless_dev *wdev = dev->ieee80211_ptr;
8482         struct cfg80211_sched_scan_request *sched_scan_req;
8483         bool want_multi;
8484         int err;
8485
8486         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8487                 return -EOPNOTSUPP;
8488
8489         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8490         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8491         if (err)
8492                 return err;
8493
8494         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8495                                                   info->attrs,
8496                                                   rdev->wiphy.max_match_sets);
8497
8498         err = PTR_ERR_OR_ZERO(sched_scan_req);
8499         if (err)
8500                 goto out_err;
8501
8502         /* leave request id zero for legacy request
8503          * or if driver does not support multi-scheduled scan
8504          */
8505         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8506                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8507
8508         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8509         if (err)
8510                 goto out_free;
8511
8512         sched_scan_req->dev = dev;
8513         sched_scan_req->wiphy = &rdev->wiphy;
8514
8515         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8516                 sched_scan_req->owner_nlportid = info->snd_portid;
8517
8518         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8519
8520         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8521         return 0;
8522
8523 out_free:
8524         kfree(sched_scan_req);
8525 out_err:
8526         return err;
8527 }
8528
8529 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8530                                    struct genl_info *info)
8531 {
8532         struct cfg80211_sched_scan_request *req;
8533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8534         u64 cookie;
8535
8536         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8537                 return -EOPNOTSUPP;
8538
8539         if (info->attrs[NL80211_ATTR_COOKIE]) {
8540                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8541                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8542         }
8543
8544         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8545                                      struct cfg80211_sched_scan_request,
8546                                      list);
8547         if (!req || req->reqid ||
8548             (req->owner_nlportid &&
8549              req->owner_nlportid != info->snd_portid))
8550                 return -ENOENT;
8551
8552         return cfg80211_stop_sched_scan_req(rdev, req, false);
8553 }
8554
8555 static int nl80211_start_radar_detection(struct sk_buff *skb,
8556                                          struct genl_info *info)
8557 {
8558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8559         struct net_device *dev = info->user_ptr[1];
8560         struct wireless_dev *wdev = dev->ieee80211_ptr;
8561         struct wiphy *wiphy = wdev->wiphy;
8562         struct cfg80211_chan_def chandef;
8563         enum nl80211_dfs_regions dfs_region;
8564         unsigned int cac_time_ms;
8565         int err;
8566
8567         dfs_region = reg_get_dfs_region(wiphy);
8568         if (dfs_region == NL80211_DFS_UNSET)
8569                 return -EINVAL;
8570
8571         err = nl80211_parse_chandef(rdev, info, &chandef);
8572         if (err)
8573                 return err;
8574
8575         if (netif_carrier_ok(dev))
8576                 return -EBUSY;
8577
8578         if (wdev->cac_started)
8579                 return -EBUSY;
8580
8581         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8582         if (err < 0)
8583                 return err;
8584
8585         if (err == 0)
8586                 return -EINVAL;
8587
8588         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8589                 return -EINVAL;
8590
8591         /* CAC start is offloaded to HW and can't be started manually */
8592         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8593                 return -EOPNOTSUPP;
8594
8595         if (!rdev->ops->start_radar_detection)
8596                 return -EOPNOTSUPP;
8597
8598         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8599         if (WARN_ON(!cac_time_ms))
8600                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8601
8602         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8603         if (!err) {
8604                 wdev->chandef = chandef;
8605                 wdev->cac_started = true;
8606                 wdev->cac_start_time = jiffies;
8607                 wdev->cac_time_ms = cac_time_ms;
8608         }
8609         return err;
8610 }
8611
8612 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8613                                           struct genl_info *info)
8614 {
8615         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8616         struct net_device *dev = info->user_ptr[1];
8617         struct wireless_dev *wdev = dev->ieee80211_ptr;
8618         struct wiphy *wiphy = wdev->wiphy;
8619         struct cfg80211_chan_def chandef;
8620         enum nl80211_dfs_regions dfs_region;
8621         int err;
8622
8623         dfs_region = reg_get_dfs_region(wiphy);
8624         if (dfs_region == NL80211_DFS_UNSET) {
8625                 GENL_SET_ERR_MSG(info,
8626                                  "DFS Region is not set. Unexpected Radar indication");
8627                 return -EINVAL;
8628         }
8629
8630         err = nl80211_parse_chandef(rdev, info, &chandef);
8631         if (err) {
8632                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8633                 return err;
8634         }
8635
8636         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8637         if (err < 0) {
8638                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8639                 return err;
8640         }
8641
8642         if (err == 0) {
8643                 GENL_SET_ERR_MSG(info,
8644                                  "Unexpected Radar indication for chandef/iftype");
8645                 return -EINVAL;
8646         }
8647
8648         /* Do not process this notification if radar is already detected
8649          * by kernel on this channel, and return success.
8650          */
8651         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8652                 return 0;
8653
8654         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8655
8656         cfg80211_sched_dfs_chan_update(rdev);
8657
8658         rdev->radar_chandef = chandef;
8659
8660         /* Propagate this notification to other radios as well */
8661         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8662
8663         return 0;
8664 }
8665
8666 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8667 {
8668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8669         struct net_device *dev = info->user_ptr[1];
8670         struct wireless_dev *wdev = dev->ieee80211_ptr;
8671         struct cfg80211_csa_settings params;
8672         /* csa_attrs is defined static to avoid waste of stack size - this
8673          * function is called under RTNL lock, so this should not be a problem.
8674          */
8675         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8676         int err;
8677         bool need_new_beacon = false;
8678         bool need_handle_dfs_flag = true;
8679         int len, i;
8680         u32 cs_count;
8681
8682         if (!rdev->ops->channel_switch ||
8683             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8684                 return -EOPNOTSUPP;
8685
8686         switch (dev->ieee80211_ptr->iftype) {
8687         case NL80211_IFTYPE_AP:
8688         case NL80211_IFTYPE_P2P_GO:
8689                 need_new_beacon = true;
8690                 /* For all modes except AP the handle_dfs flag needs to be
8691                  * supplied to tell the kernel that userspace will handle radar
8692                  * events when they happen. Otherwise a switch to a channel
8693                  * requiring DFS will be rejected.
8694                  */
8695                 need_handle_dfs_flag = false;
8696
8697                 /* useless if AP is not running */
8698                 if (!wdev->beacon_interval)
8699                         return -ENOTCONN;
8700                 break;
8701         case NL80211_IFTYPE_ADHOC:
8702                 if (!wdev->ssid_len)
8703                         return -ENOTCONN;
8704                 break;
8705         case NL80211_IFTYPE_MESH_POINT:
8706                 if (!wdev->mesh_id_len)
8707                         return -ENOTCONN;
8708                 break;
8709         default:
8710                 return -EOPNOTSUPP;
8711         }
8712
8713         memset(&params, 0, sizeof(params));
8714         params.beacon_csa.ftm_responder = -1;
8715
8716         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8717             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8718                 return -EINVAL;
8719
8720         /* only important for AP, IBSS and mesh create IEs internally */
8721         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8722                 return -EINVAL;
8723
8724         /* Even though the attribute is u32, the specification says
8725          * u8, so let's make sure we don't overflow.
8726          */
8727         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8728         if (cs_count > 255)
8729                 return -EINVAL;
8730
8731         params.count = cs_count;
8732
8733         if (!need_new_beacon)
8734                 goto skip_beacons;
8735
8736         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8737         if (err)
8738                 return err;
8739
8740         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8741                                           info->attrs[NL80211_ATTR_CSA_IES],
8742                                           nl80211_policy, info->extack);
8743         if (err)
8744                 return err;
8745
8746         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8747         if (err)
8748                 return err;
8749
8750         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8751                 return -EINVAL;
8752
8753         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8754         if (!len || (len % sizeof(u16)))
8755                 return -EINVAL;
8756
8757         params.n_counter_offsets_beacon = len / sizeof(u16);
8758         if (rdev->wiphy.max_num_csa_counters &&
8759             (params.n_counter_offsets_beacon >
8760              rdev->wiphy.max_num_csa_counters))
8761                 return -EINVAL;
8762
8763         params.counter_offsets_beacon =
8764                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8765
8766         /* sanity checks - counters should fit and be the same */
8767         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8768                 u16 offset = params.counter_offsets_beacon[i];
8769
8770                 if (offset >= params.beacon_csa.tail_len)
8771                         return -EINVAL;
8772
8773                 if (params.beacon_csa.tail[offset] != params.count)
8774                         return -EINVAL;
8775         }
8776
8777         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8778                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8779                 if (!len || (len % sizeof(u16)))
8780                         return -EINVAL;
8781
8782                 params.n_counter_offsets_presp = len / sizeof(u16);
8783                 if (rdev->wiphy.max_num_csa_counters &&
8784                     (params.n_counter_offsets_presp >
8785                      rdev->wiphy.max_num_csa_counters))
8786                         return -EINVAL;
8787
8788                 params.counter_offsets_presp =
8789                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8790
8791                 /* sanity checks - counters should fit and be the same */
8792                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8793                         u16 offset = params.counter_offsets_presp[i];
8794
8795                         if (offset >= params.beacon_csa.probe_resp_len)
8796                                 return -EINVAL;
8797
8798                         if (params.beacon_csa.probe_resp[offset] !=
8799                             params.count)
8800                                 return -EINVAL;
8801                 }
8802         }
8803
8804 skip_beacons:
8805         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8806         if (err)
8807                 return err;
8808
8809         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8810                                            wdev->iftype))
8811                 return -EINVAL;
8812
8813         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8814                                             &params.chandef,
8815                                             wdev->iftype);
8816         if (err < 0)
8817                 return err;
8818
8819         if (err > 0) {
8820                 params.radar_required = true;
8821                 if (need_handle_dfs_flag &&
8822                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8823                         return -EINVAL;
8824                 }
8825         }
8826
8827         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8828                 params.block_tx = true;
8829
8830         wdev_lock(wdev);
8831         err = rdev_channel_switch(rdev, dev, &params);
8832         wdev_unlock(wdev);
8833
8834         return err;
8835 }
8836
8837 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8838                             u32 seq, int flags,
8839                             struct cfg80211_registered_device *rdev,
8840                             struct wireless_dev *wdev,
8841                             struct cfg80211_internal_bss *intbss)
8842 {
8843         struct cfg80211_bss *res = &intbss->pub;
8844         const struct cfg80211_bss_ies *ies;
8845         void *hdr;
8846         struct nlattr *bss;
8847
8848         ASSERT_WDEV_LOCK(wdev);
8849
8850         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8851                              NL80211_CMD_NEW_SCAN_RESULTS);
8852         if (!hdr)
8853                 return -1;
8854
8855         genl_dump_check_consistent(cb, hdr);
8856
8857         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8858                 goto nla_put_failure;
8859         if (wdev->netdev &&
8860             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8861                 goto nla_put_failure;
8862         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8863                               NL80211_ATTR_PAD))
8864                 goto nla_put_failure;
8865
8866         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8867         if (!bss)
8868                 goto nla_put_failure;
8869         if ((!is_zero_ether_addr(res->bssid) &&
8870              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8871                 goto nla_put_failure;
8872
8873         rcu_read_lock();
8874         /* indicate whether we have probe response data or not */
8875         if (rcu_access_pointer(res->proberesp_ies) &&
8876             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8877                 goto fail_unlock_rcu;
8878
8879         /* this pointer prefers to be pointed to probe response data
8880          * but is always valid
8881          */
8882         ies = rcu_dereference(res->ies);
8883         if (ies) {
8884                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8885                                       NL80211_BSS_PAD))
8886                         goto fail_unlock_rcu;
8887                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8888                                         ies->len, ies->data))
8889                         goto fail_unlock_rcu;
8890         }
8891
8892         /* and this pointer is always (unless driver didn't know) beacon data */
8893         ies = rcu_dereference(res->beacon_ies);
8894         if (ies && ies->from_beacon) {
8895                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8896                                       NL80211_BSS_PAD))
8897                         goto fail_unlock_rcu;
8898                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8899                                         ies->len, ies->data))
8900                         goto fail_unlock_rcu;
8901         }
8902         rcu_read_unlock();
8903
8904         if (res->beacon_interval &&
8905             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8906                 goto nla_put_failure;
8907         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8908             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8909             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8910             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8911                         jiffies_to_msecs(jiffies - intbss->ts)))
8912                 goto nla_put_failure;
8913
8914         if (intbss->parent_tsf &&
8915             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8916                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8917              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8918                      intbss->parent_bssid)))
8919                 goto nla_put_failure;
8920
8921         if (intbss->ts_boottime &&
8922             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8923                               intbss->ts_boottime, NL80211_BSS_PAD))
8924                 goto nla_put_failure;
8925
8926         if (!nl80211_put_signal(msg, intbss->pub.chains,
8927                                 intbss->pub.chain_signal,
8928                                 NL80211_BSS_CHAIN_SIGNAL))
8929                 goto nla_put_failure;
8930
8931         switch (rdev->wiphy.signal_type) {
8932         case CFG80211_SIGNAL_TYPE_MBM:
8933                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8934                         goto nla_put_failure;
8935                 break;
8936         case CFG80211_SIGNAL_TYPE_UNSPEC:
8937                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8938                         goto nla_put_failure;
8939                 break;
8940         default:
8941                 break;
8942         }
8943
8944         switch (wdev->iftype) {
8945         case NL80211_IFTYPE_P2P_CLIENT:
8946         case NL80211_IFTYPE_STATION:
8947                 if (intbss == wdev->current_bss &&
8948                     nla_put_u32(msg, NL80211_BSS_STATUS,
8949                                 NL80211_BSS_STATUS_ASSOCIATED))
8950                         goto nla_put_failure;
8951                 break;
8952         case NL80211_IFTYPE_ADHOC:
8953                 if (intbss == wdev->current_bss &&
8954                     nla_put_u32(msg, NL80211_BSS_STATUS,
8955                                 NL80211_BSS_STATUS_IBSS_JOINED))
8956                         goto nla_put_failure;
8957                 break;
8958         default:
8959                 break;
8960         }
8961
8962         nla_nest_end(msg, bss);
8963
8964         genlmsg_end(msg, hdr);
8965         return 0;
8966
8967  fail_unlock_rcu:
8968         rcu_read_unlock();
8969  nla_put_failure:
8970         genlmsg_cancel(msg, hdr);
8971         return -EMSGSIZE;
8972 }
8973
8974 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8975 {
8976         struct cfg80211_registered_device *rdev;
8977         struct cfg80211_internal_bss *scan;
8978         struct wireless_dev *wdev;
8979         int start = cb->args[2], idx = 0;
8980         int err;
8981
8982         rtnl_lock();
8983         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8984         if (err) {
8985                 rtnl_unlock();
8986                 return err;
8987         }
8988
8989         wdev_lock(wdev);
8990         spin_lock_bh(&rdev->bss_lock);
8991
8992         /*
8993          * dump_scan will be called multiple times to break up the scan results
8994          * into multiple messages.  It is unlikely that any more bss-es will be
8995          * expired after the first call, so only call only call this on the
8996          * first dump_scan invocation.
8997          */
8998         if (start == 0)
8999                 cfg80211_bss_expire(rdev);
9000
9001         cb->seq = rdev->bss_generation;
9002
9003         list_for_each_entry(scan, &rdev->bss_list, list) {
9004                 if (++idx <= start)
9005                         continue;
9006                 if (nl80211_send_bss(skb, cb,
9007                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9008                                 rdev, wdev, scan) < 0) {
9009                         idx--;
9010                         break;
9011                 }
9012         }
9013
9014         spin_unlock_bh(&rdev->bss_lock);
9015         wdev_unlock(wdev);
9016
9017         cb->args[2] = idx;
9018         rtnl_unlock();
9019
9020         return skb->len;
9021 }
9022
9023 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9024                                int flags, struct net_device *dev,
9025                                bool allow_radio_stats,
9026                                struct survey_info *survey)
9027 {
9028         void *hdr;
9029         struct nlattr *infoattr;
9030
9031         /* skip radio stats if userspace didn't request them */
9032         if (!survey->channel && !allow_radio_stats)
9033                 return 0;
9034
9035         hdr = nl80211hdr_put(msg, portid, seq, flags,
9036                              NL80211_CMD_NEW_SURVEY_RESULTS);
9037         if (!hdr)
9038                 return -ENOMEM;
9039
9040         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9041                 goto nla_put_failure;
9042
9043         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9044         if (!infoattr)
9045                 goto nla_put_failure;
9046
9047         if (survey->channel &&
9048             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9049                         survey->channel->center_freq))
9050                 goto nla_put_failure;
9051
9052         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9053             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9054                 goto nla_put_failure;
9055         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9056             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9057                 goto nla_put_failure;
9058         if ((survey->filled & SURVEY_INFO_TIME) &&
9059             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9060                         survey->time, NL80211_SURVEY_INFO_PAD))
9061                 goto nla_put_failure;
9062         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9063             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9064                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9065                 goto nla_put_failure;
9066         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9067             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9068                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9069                 goto nla_put_failure;
9070         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9071             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9072                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9073                 goto nla_put_failure;
9074         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9075             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9076                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9077                 goto nla_put_failure;
9078         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9079             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9080                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9081                 goto nla_put_failure;
9082         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9083             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9084                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9085                 goto nla_put_failure;
9086
9087         nla_nest_end(msg, infoattr);
9088
9089         genlmsg_end(msg, hdr);
9090         return 0;
9091
9092  nla_put_failure:
9093         genlmsg_cancel(msg, hdr);
9094         return -EMSGSIZE;
9095 }
9096
9097 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9098 {
9099         struct nlattr **attrbuf;
9100         struct survey_info survey;
9101         struct cfg80211_registered_device *rdev;
9102         struct wireless_dev *wdev;
9103         int survey_idx = cb->args[2];
9104         int res;
9105         bool radio_stats;
9106
9107         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9108         if (!attrbuf)
9109                 return -ENOMEM;
9110
9111         rtnl_lock();
9112         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9113         if (res)
9114                 goto out_err;
9115
9116         /* prepare_wdev_dump parsed the attributes */
9117         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9118
9119         if (!wdev->netdev) {
9120                 res = -EINVAL;
9121                 goto out_err;
9122         }
9123
9124         if (!rdev->ops->dump_survey) {
9125                 res = -EOPNOTSUPP;
9126                 goto out_err;
9127         }
9128
9129         while (1) {
9130                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9131                 if (res == -ENOENT)
9132                         break;
9133                 if (res)
9134                         goto out_err;
9135
9136                 /* don't send disabled channels, but do send non-channel data */
9137                 if (survey.channel &&
9138                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9139                         survey_idx++;
9140                         continue;
9141                 }
9142
9143                 if (nl80211_send_survey(skb,
9144                                 NETLINK_CB(cb->skb).portid,
9145                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9146                                 wdev->netdev, radio_stats, &survey) < 0)
9147                         goto out;
9148                 survey_idx++;
9149         }
9150
9151  out:
9152         cb->args[2] = survey_idx;
9153         res = skb->len;
9154  out_err:
9155         kfree(attrbuf);
9156         rtnl_unlock();
9157         return res;
9158 }
9159
9160 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9161 {
9162         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9163                                   NL80211_WPA_VERSION_2 |
9164                                   NL80211_WPA_VERSION_3));
9165 }
9166
9167 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9168 {
9169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9170         struct net_device *dev = info->user_ptr[1];
9171         struct ieee80211_channel *chan;
9172         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9173         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9174         enum nl80211_auth_type auth_type;
9175         struct key_parse key;
9176         bool local_state_change;
9177
9178         if (!info->attrs[NL80211_ATTR_MAC])
9179                 return -EINVAL;
9180
9181         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9182                 return -EINVAL;
9183
9184         if (!info->attrs[NL80211_ATTR_SSID])
9185                 return -EINVAL;
9186
9187         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9188                 return -EINVAL;
9189
9190         err = nl80211_parse_key(info, &key);
9191         if (err)
9192                 return err;
9193
9194         if (key.idx >= 0) {
9195                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9196                         return -EINVAL;
9197                 if (!key.p.key || !key.p.key_len)
9198                         return -EINVAL;
9199                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9200                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9201                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9202                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9203                         return -EINVAL;
9204                 if (key.idx > 3)
9205                         return -EINVAL;
9206         } else {
9207                 key.p.key_len = 0;
9208                 key.p.key = NULL;
9209         }
9210
9211         if (key.idx >= 0) {
9212                 int i;
9213                 bool ok = false;
9214
9215                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9216                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9217                                 ok = true;
9218                                 break;
9219                         }
9220                 }
9221                 if (!ok)
9222                         return -EINVAL;
9223         }
9224
9225         if (!rdev->ops->auth)
9226                 return -EOPNOTSUPP;
9227
9228         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9229             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9230                 return -EOPNOTSUPP;
9231
9232         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9233         chan = nl80211_get_valid_chan(&rdev->wiphy,
9234                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9235         if (!chan)
9236                 return -EINVAL;
9237
9238         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9239         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9240
9241         if (info->attrs[NL80211_ATTR_IE]) {
9242                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9243                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9244         }
9245
9246         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9247         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9248                 return -EINVAL;
9249
9250         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9251              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9252              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9253              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9254             !info->attrs[NL80211_ATTR_AUTH_DATA])
9255                 return -EINVAL;
9256
9257         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9258                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9259                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9260                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9261                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9262                         return -EINVAL;
9263                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9264                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9265                 /* need to include at least Auth Transaction and Status Code */
9266                 if (auth_data_len < 4)
9267                         return -EINVAL;
9268         }
9269
9270         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9271
9272         /*
9273          * Since we no longer track auth state, ignore
9274          * requests to only change local state.
9275          */
9276         if (local_state_change)
9277                 return 0;
9278
9279         wdev_lock(dev->ieee80211_ptr);
9280         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9281                                  ssid, ssid_len, ie, ie_len,
9282                                  key.p.key, key.p.key_len, key.idx,
9283                                  auth_data, auth_data_len);
9284         wdev_unlock(dev->ieee80211_ptr);
9285         return err;
9286 }
9287
9288 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9289                                      struct genl_info *info)
9290 {
9291         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9292                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9293                 return -EINVAL;
9294         }
9295
9296         if (!rdev->ops->tx_control_port ||
9297             !wiphy_ext_feature_isset(&rdev->wiphy,
9298                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9299                 return -EOPNOTSUPP;
9300
9301         return 0;
9302 }
9303
9304 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9305                                    struct genl_info *info,
9306                                    struct cfg80211_crypto_settings *settings,
9307                                    int cipher_limit)
9308 {
9309         memset(settings, 0, sizeof(*settings));
9310
9311         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9312
9313         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9314                 u16 proto;
9315
9316                 proto = nla_get_u16(
9317                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9318                 settings->control_port_ethertype = cpu_to_be16(proto);
9319                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9320                     proto != ETH_P_PAE)
9321                         return -EINVAL;
9322                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9323                         settings->control_port_no_encrypt = true;
9324         } else
9325                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9326
9327         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9328                 int r = validate_pae_over_nl80211(rdev, info);
9329
9330                 if (r < 0)
9331                         return r;
9332
9333                 settings->control_port_over_nl80211 = true;
9334
9335                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9336                         settings->control_port_no_preauth = true;
9337         }
9338
9339         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9340                 void *data;
9341                 int len, i;
9342
9343                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9344                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9345                 settings->n_ciphers_pairwise = len / sizeof(u32);
9346
9347                 if (len % sizeof(u32))
9348                         return -EINVAL;
9349
9350                 if (settings->n_ciphers_pairwise > cipher_limit)
9351                         return -EINVAL;
9352
9353                 memcpy(settings->ciphers_pairwise, data, len);
9354
9355                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9356                         if (!cfg80211_supported_cipher_suite(
9357                                         &rdev->wiphy,
9358                                         settings->ciphers_pairwise[i]))
9359                                 return -EINVAL;
9360         }
9361
9362         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9363                 settings->cipher_group =
9364                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9365                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9366                                                      settings->cipher_group))
9367                         return -EINVAL;
9368         }
9369
9370         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9371                 settings->wpa_versions =
9372                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9373                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9374                         return -EINVAL;
9375         }
9376
9377         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9378                 void *data;
9379                 int len;
9380
9381                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9382                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9383                 settings->n_akm_suites = len / sizeof(u32);
9384
9385                 if (len % sizeof(u32))
9386                         return -EINVAL;
9387
9388                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9389                         return -EINVAL;
9390
9391                 memcpy(settings->akm_suites, data, len);
9392         }
9393
9394         if (info->attrs[NL80211_ATTR_PMK]) {
9395                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9396                         return -EINVAL;
9397                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9398                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9399                         return -EINVAL;
9400                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9401         }
9402
9403         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9404                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9405                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9406                         return -EINVAL;
9407                 settings->sae_pwd =
9408                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9409                 settings->sae_pwd_len =
9410                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9411         }
9412
9413         return 0;
9414 }
9415
9416 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9417 {
9418         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9419         struct net_device *dev = info->user_ptr[1];
9420         struct ieee80211_channel *chan;
9421         struct cfg80211_assoc_request req = {};
9422         const u8 *bssid, *ssid;
9423         int err, ssid_len = 0;
9424
9425         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9426             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9427                 return -EPERM;
9428
9429         if (!info->attrs[NL80211_ATTR_MAC] ||
9430             !info->attrs[NL80211_ATTR_SSID] ||
9431             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9432                 return -EINVAL;
9433
9434         if (!rdev->ops->assoc)
9435                 return -EOPNOTSUPP;
9436
9437         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9438             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9439                 return -EOPNOTSUPP;
9440
9441         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9442
9443         chan = nl80211_get_valid_chan(&rdev->wiphy,
9444                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9445         if (!chan)
9446                 return -EINVAL;
9447
9448         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9449         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9450
9451         if (info->attrs[NL80211_ATTR_IE]) {
9452                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9453                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9454         }
9455
9456         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9457                 enum nl80211_mfp mfp =
9458                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9459                 if (mfp == NL80211_MFP_REQUIRED)
9460                         req.use_mfp = true;
9461                 else if (mfp != NL80211_MFP_NO)
9462                         return -EINVAL;
9463         }
9464
9465         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9466                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9467
9468         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9469                 req.flags |= ASSOC_REQ_DISABLE_HT;
9470
9471         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9472                 memcpy(&req.ht_capa_mask,
9473                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9474                        sizeof(req.ht_capa_mask));
9475
9476         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9477                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9478                         return -EINVAL;
9479                 memcpy(&req.ht_capa,
9480                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9481                        sizeof(req.ht_capa));
9482         }
9483
9484         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9485                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9486
9487         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9488                 memcpy(&req.vht_capa_mask,
9489                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9490                        sizeof(req.vht_capa_mask));
9491
9492         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9493                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9494                         return -EINVAL;
9495                 memcpy(&req.vht_capa,
9496                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9497                        sizeof(req.vht_capa));
9498         }
9499
9500         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9501                 if (!((rdev->wiphy.features &
9502                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9503                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9504                     !wiphy_ext_feature_isset(&rdev->wiphy,
9505                                              NL80211_EXT_FEATURE_RRM))
9506                         return -EINVAL;
9507                 req.flags |= ASSOC_REQ_USE_RRM;
9508         }
9509
9510         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9511                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9512                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9513                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9514                         return -EINVAL;
9515                 req.fils_nonces =
9516                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9517         }
9518
9519         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9520         if (!err) {
9521                 wdev_lock(dev->ieee80211_ptr);
9522
9523                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9524                                           ssid, ssid_len, &req);
9525
9526                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9527                         dev->ieee80211_ptr->conn_owner_nlportid =
9528                                 info->snd_portid;
9529                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9530                                bssid, ETH_ALEN);
9531                 }
9532
9533                 wdev_unlock(dev->ieee80211_ptr);
9534         }
9535
9536         return err;
9537 }
9538
9539 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9540 {
9541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9542         struct net_device *dev = info->user_ptr[1];
9543         const u8 *ie = NULL, *bssid;
9544         int ie_len = 0, err;
9545         u16 reason_code;
9546         bool local_state_change;
9547
9548         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9549             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9550                 return -EPERM;
9551
9552         if (!info->attrs[NL80211_ATTR_MAC])
9553                 return -EINVAL;
9554
9555         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9556                 return -EINVAL;
9557
9558         if (!rdev->ops->deauth)
9559                 return -EOPNOTSUPP;
9560
9561         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9562             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9563                 return -EOPNOTSUPP;
9564
9565         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9566
9567         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9568         if (reason_code == 0) {
9569                 /* Reason Code 0 is reserved */
9570                 return -EINVAL;
9571         }
9572
9573         if (info->attrs[NL80211_ATTR_IE]) {
9574                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9575                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9576         }
9577
9578         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9579
9580         wdev_lock(dev->ieee80211_ptr);
9581         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9582                                    local_state_change);
9583         wdev_unlock(dev->ieee80211_ptr);
9584         return err;
9585 }
9586
9587 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9588 {
9589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9590         struct net_device *dev = info->user_ptr[1];
9591         const u8 *ie = NULL, *bssid;
9592         int ie_len = 0, err;
9593         u16 reason_code;
9594         bool local_state_change;
9595
9596         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9597             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9598                 return -EPERM;
9599
9600         if (!info->attrs[NL80211_ATTR_MAC])
9601                 return -EINVAL;
9602
9603         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9604                 return -EINVAL;
9605
9606         if (!rdev->ops->disassoc)
9607                 return -EOPNOTSUPP;
9608
9609         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9610             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9611                 return -EOPNOTSUPP;
9612
9613         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9614
9615         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9616         if (reason_code == 0) {
9617                 /* Reason Code 0 is reserved */
9618                 return -EINVAL;
9619         }
9620
9621         if (info->attrs[NL80211_ATTR_IE]) {
9622                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9623                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9624         }
9625
9626         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9627
9628         wdev_lock(dev->ieee80211_ptr);
9629         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9630                                      local_state_change);
9631         wdev_unlock(dev->ieee80211_ptr);
9632         return err;
9633 }
9634
9635 static bool
9636 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9637                          int mcast_rate[NUM_NL80211_BANDS],
9638                          int rateval)
9639 {
9640         struct wiphy *wiphy = &rdev->wiphy;
9641         bool found = false;
9642         int band, i;
9643
9644         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9645                 struct ieee80211_supported_band *sband;
9646
9647                 sband = wiphy->bands[band];
9648                 if (!sband)
9649                         continue;
9650
9651                 for (i = 0; i < sband->n_bitrates; i++) {
9652                         if (sband->bitrates[i].bitrate == rateval) {
9653                                 mcast_rate[band] = i + 1;
9654                                 found = true;
9655                                 break;
9656                         }
9657                 }
9658         }
9659
9660         return found;
9661 }
9662
9663 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9664 {
9665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9666         struct net_device *dev = info->user_ptr[1];
9667         struct cfg80211_ibss_params ibss;
9668         struct wiphy *wiphy;
9669         struct cfg80211_cached_keys *connkeys = NULL;
9670         int err;
9671
9672         memset(&ibss, 0, sizeof(ibss));
9673
9674         if (!info->attrs[NL80211_ATTR_SSID] ||
9675             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9676                 return -EINVAL;
9677
9678         ibss.beacon_interval = 100;
9679
9680         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9681                 ibss.beacon_interval =
9682                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9683
9684         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9685                                            ibss.beacon_interval);
9686         if (err)
9687                 return err;
9688
9689         if (!rdev->ops->join_ibss)
9690                 return -EOPNOTSUPP;
9691
9692         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9693                 return -EOPNOTSUPP;
9694
9695         wiphy = &rdev->wiphy;
9696
9697         if (info->attrs[NL80211_ATTR_MAC]) {
9698                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9699
9700                 if (!is_valid_ether_addr(ibss.bssid))
9701                         return -EINVAL;
9702         }
9703         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9704         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9705
9706         if (info->attrs[NL80211_ATTR_IE]) {
9707                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9708                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9709         }
9710
9711         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9712         if (err)
9713                 return err;
9714
9715         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9716                                      NL80211_IFTYPE_ADHOC))
9717                 return -EINVAL;
9718
9719         switch (ibss.chandef.width) {
9720         case NL80211_CHAN_WIDTH_5:
9721         case NL80211_CHAN_WIDTH_10:
9722         case NL80211_CHAN_WIDTH_20_NOHT:
9723                 break;
9724         case NL80211_CHAN_WIDTH_20:
9725         case NL80211_CHAN_WIDTH_40:
9726                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9727                         return -EINVAL;
9728                 break;
9729         case NL80211_CHAN_WIDTH_80:
9730         case NL80211_CHAN_WIDTH_80P80:
9731         case NL80211_CHAN_WIDTH_160:
9732                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9733                         return -EINVAL;
9734                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9735                                              NL80211_EXT_FEATURE_VHT_IBSS))
9736                         return -EINVAL;
9737                 break;
9738         default:
9739                 return -EINVAL;
9740         }
9741
9742         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9743         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9744
9745         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9746                 u8 *rates =
9747                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9748                 int n_rates =
9749                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9750                 struct ieee80211_supported_band *sband =
9751                         wiphy->bands[ibss.chandef.chan->band];
9752
9753                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9754                                              &ibss.basic_rates);
9755                 if (err)
9756                         return err;
9757         }
9758
9759         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9760                 memcpy(&ibss.ht_capa_mask,
9761                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9762                        sizeof(ibss.ht_capa_mask));
9763
9764         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9765                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9766                         return -EINVAL;
9767                 memcpy(&ibss.ht_capa,
9768                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9769                        sizeof(ibss.ht_capa));
9770         }
9771
9772         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9773             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9774                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9775                 return -EINVAL;
9776
9777         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9778                 bool no_ht = false;
9779
9780                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9781                 if (IS_ERR(connkeys))
9782                         return PTR_ERR(connkeys);
9783
9784                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9785                     no_ht) {
9786                         kzfree(connkeys);
9787                         return -EINVAL;
9788                 }
9789         }
9790
9791         ibss.control_port =
9792                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9793
9794         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9795                 int r = validate_pae_over_nl80211(rdev, info);
9796
9797                 if (r < 0) {
9798                         kzfree(connkeys);
9799                         return r;
9800                 }
9801
9802                 ibss.control_port_over_nl80211 = true;
9803         }
9804
9805         ibss.userspace_handles_dfs =
9806                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9807
9808         wdev_lock(dev->ieee80211_ptr);
9809         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9810         if (err)
9811                 kzfree(connkeys);
9812         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9813                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9814         wdev_unlock(dev->ieee80211_ptr);
9815
9816         return err;
9817 }
9818
9819 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9820 {
9821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9822         struct net_device *dev = info->user_ptr[1];
9823
9824         if (!rdev->ops->leave_ibss)
9825                 return -EOPNOTSUPP;
9826
9827         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9828                 return -EOPNOTSUPP;
9829
9830         return cfg80211_leave_ibss(rdev, dev, false);
9831 }
9832
9833 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9834 {
9835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9836         struct net_device *dev = info->user_ptr[1];
9837         int mcast_rate[NUM_NL80211_BANDS];
9838         u32 nla_rate;
9839         int err;
9840
9841         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9842             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9843             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9844                 return -EOPNOTSUPP;
9845
9846         if (!rdev->ops->set_mcast_rate)
9847                 return -EOPNOTSUPP;
9848
9849         memset(mcast_rate, 0, sizeof(mcast_rate));
9850
9851         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9852                 return -EINVAL;
9853
9854         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9855         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9856                 return -EINVAL;
9857
9858         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9859
9860         return err;
9861 }
9862
9863 static struct sk_buff *
9864 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9865                             struct wireless_dev *wdev, int approxlen,
9866                             u32 portid, u32 seq, enum nl80211_commands cmd,
9867                             enum nl80211_attrs attr,
9868                             const struct nl80211_vendor_cmd_info *info,
9869                             gfp_t gfp)
9870 {
9871         struct sk_buff *skb;
9872         void *hdr;
9873         struct nlattr *data;
9874
9875         skb = nlmsg_new(approxlen + 100, gfp);
9876         if (!skb)
9877                 return NULL;
9878
9879         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9880         if (!hdr) {
9881                 kfree_skb(skb);
9882                 return NULL;
9883         }
9884
9885         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9886                 goto nla_put_failure;
9887
9888         if (info) {
9889                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9890                                 info->vendor_id))
9891                         goto nla_put_failure;
9892                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9893                                 info->subcmd))
9894                         goto nla_put_failure;
9895         }
9896
9897         if (wdev) {
9898                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9899                                       wdev_id(wdev), NL80211_ATTR_PAD))
9900                         goto nla_put_failure;
9901                 if (wdev->netdev &&
9902                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9903                                 wdev->netdev->ifindex))
9904                         goto nla_put_failure;
9905         }
9906
9907         data = nla_nest_start_noflag(skb, attr);
9908         if (!data)
9909                 goto nla_put_failure;
9910
9911         ((void **)skb->cb)[0] = rdev;
9912         ((void **)skb->cb)[1] = hdr;
9913         ((void **)skb->cb)[2] = data;
9914
9915         return skb;
9916
9917  nla_put_failure:
9918         kfree_skb(skb);
9919         return NULL;
9920 }
9921
9922 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9923                                            struct wireless_dev *wdev,
9924                                            enum nl80211_commands cmd,
9925                                            enum nl80211_attrs attr,
9926                                            unsigned int portid,
9927                                            int vendor_event_idx,
9928                                            int approxlen, gfp_t gfp)
9929 {
9930         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9931         const struct nl80211_vendor_cmd_info *info;
9932
9933         switch (cmd) {
9934         case NL80211_CMD_TESTMODE:
9935                 if (WARN_ON(vendor_event_idx != -1))
9936                         return NULL;
9937                 info = NULL;
9938                 break;
9939         case NL80211_CMD_VENDOR:
9940                 if (WARN_ON(vendor_event_idx < 0 ||
9941                             vendor_event_idx >= wiphy->n_vendor_events))
9942                         return NULL;
9943                 info = &wiphy->vendor_events[vendor_event_idx];
9944                 break;
9945         default:
9946                 WARN_ON(1);
9947                 return NULL;
9948         }
9949
9950         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9951                                            cmd, attr, info, gfp);
9952 }
9953 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9954
9955 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9956 {
9957         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9958         void *hdr = ((void **)skb->cb)[1];
9959         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9960         struct nlattr *data = ((void **)skb->cb)[2];
9961         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9962
9963         /* clear CB data for netlink core to own from now on */
9964         memset(skb->cb, 0, sizeof(skb->cb));
9965
9966         nla_nest_end(skb, data);
9967         genlmsg_end(skb, hdr);
9968
9969         if (nlhdr->nlmsg_pid) {
9970                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9971                                 nlhdr->nlmsg_pid);
9972         } else {
9973                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9974                         mcgrp = NL80211_MCGRP_VENDOR;
9975
9976                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9977                                         skb, 0, mcgrp, gfp);
9978         }
9979 }
9980 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9981
9982 #ifdef CONFIG_NL80211_TESTMODE
9983 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9984 {
9985         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9986         struct wireless_dev *wdev =
9987                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9988         int err;
9989
9990         if (!rdev->ops->testmode_cmd)
9991                 return -EOPNOTSUPP;
9992
9993         if (IS_ERR(wdev)) {
9994                 err = PTR_ERR(wdev);
9995                 if (err != -EINVAL)
9996                         return err;
9997                 wdev = NULL;
9998         } else if (wdev->wiphy != &rdev->wiphy) {
9999                 return -EINVAL;
10000         }
10001
10002         if (!info->attrs[NL80211_ATTR_TESTDATA])
10003                 return -EINVAL;
10004
10005         rdev->cur_cmd_info = info;
10006         err = rdev_testmode_cmd(rdev, wdev,
10007                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10008                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10009         rdev->cur_cmd_info = NULL;
10010
10011         return err;
10012 }
10013
10014 static int nl80211_testmode_dump(struct sk_buff *skb,
10015                                  struct netlink_callback *cb)
10016 {
10017         struct cfg80211_registered_device *rdev;
10018         struct nlattr **attrbuf = NULL;
10019         int err;
10020         long phy_idx;
10021         void *data = NULL;
10022         int data_len = 0;
10023
10024         rtnl_lock();
10025
10026         if (cb->args[0]) {
10027                 /*
10028                  * 0 is a valid index, but not valid for args[0],
10029                  * so we need to offset by 1.
10030                  */
10031                 phy_idx = cb->args[0] - 1;
10032
10033                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10034                 if (!rdev) {
10035                         err = -ENOENT;
10036                         goto out_err;
10037                 }
10038         } else {
10039                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10040                                   GFP_KERNEL);
10041                 if (!attrbuf) {
10042                         err = -ENOMEM;
10043                         goto out_err;
10044                 }
10045
10046                 err = nlmsg_parse_deprecated(cb->nlh,
10047                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10048                                              attrbuf, nl80211_fam.maxattr,
10049                                              nl80211_policy, NULL);
10050                 if (err)
10051                         goto out_err;
10052
10053                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10054                 if (IS_ERR(rdev)) {
10055                         err = PTR_ERR(rdev);
10056                         goto out_err;
10057                 }
10058                 phy_idx = rdev->wiphy_idx;
10059
10060                 if (attrbuf[NL80211_ATTR_TESTDATA])
10061                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10062         }
10063
10064         if (cb->args[1]) {
10065                 data = nla_data((void *)cb->args[1]);
10066                 data_len = nla_len((void *)cb->args[1]);
10067         }
10068
10069         if (!rdev->ops->testmode_dump) {
10070                 err = -EOPNOTSUPP;
10071                 goto out_err;
10072         }
10073
10074         while (1) {
10075                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10076                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10077                                            NL80211_CMD_TESTMODE);
10078                 struct nlattr *tmdata;
10079
10080                 if (!hdr)
10081                         break;
10082
10083                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10084                         genlmsg_cancel(skb, hdr);
10085                         break;
10086                 }
10087
10088                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10089                 if (!tmdata) {
10090                         genlmsg_cancel(skb, hdr);
10091                         break;
10092                 }
10093                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10094                 nla_nest_end(skb, tmdata);
10095
10096                 if (err == -ENOBUFS || err == -ENOENT) {
10097                         genlmsg_cancel(skb, hdr);
10098                         break;
10099                 } else if (err) {
10100                         genlmsg_cancel(skb, hdr);
10101                         goto out_err;
10102                 }
10103
10104                 genlmsg_end(skb, hdr);
10105         }
10106
10107         err = skb->len;
10108         /* see above */
10109         cb->args[0] = phy_idx + 1;
10110  out_err:
10111         kfree(attrbuf);
10112         rtnl_unlock();
10113         return err;
10114 }
10115 #endif
10116
10117 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10118 {
10119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10120         struct net_device *dev = info->user_ptr[1];
10121         struct cfg80211_connect_params connect;
10122         struct wiphy *wiphy;
10123         struct cfg80211_cached_keys *connkeys = NULL;
10124         int err;
10125
10126         memset(&connect, 0, sizeof(connect));
10127
10128         if (!info->attrs[NL80211_ATTR_SSID] ||
10129             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10130                 return -EINVAL;
10131
10132         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10133                 connect.auth_type =
10134                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10135                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10136                                              NL80211_CMD_CONNECT))
10137                         return -EINVAL;
10138         } else
10139                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10140
10141         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10142
10143         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10144             !wiphy_ext_feature_isset(&rdev->wiphy,
10145                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10146                 return -EINVAL;
10147         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10148
10149         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10150                                       NL80211_MAX_NR_CIPHER_SUITES);
10151         if (err)
10152                 return err;
10153
10154         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10155             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10156                 return -EOPNOTSUPP;
10157
10158         wiphy = &rdev->wiphy;
10159
10160         connect.bg_scan_period = -1;
10161         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10162                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10163                 connect.bg_scan_period =
10164                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10165         }
10166
10167         if (info->attrs[NL80211_ATTR_MAC])
10168                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10169         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10170                 connect.bssid_hint =
10171                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10172         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10173         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10174
10175         if (info->attrs[NL80211_ATTR_IE]) {
10176                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10177                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10178         }
10179
10180         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10181                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10182                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10183                     !wiphy_ext_feature_isset(&rdev->wiphy,
10184                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10185                         return -EOPNOTSUPP;
10186         } else {
10187                 connect.mfp = NL80211_MFP_NO;
10188         }
10189
10190         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10191                 connect.prev_bssid =
10192                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10193
10194         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10195                 connect.channel = nl80211_get_valid_chan(
10196                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
10197                 if (!connect.channel)
10198                         return -EINVAL;
10199         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10200                 connect.channel_hint = nl80211_get_valid_chan(
10201                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10202                 if (!connect.channel_hint)
10203                         return -EINVAL;
10204         }
10205
10206         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10207                 connect.edmg.channels =
10208                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10209
10210                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10211                         connect.edmg.bw_config =
10212                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10213         }
10214
10215         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10216                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10217                 if (IS_ERR(connkeys))
10218                         return PTR_ERR(connkeys);
10219         }
10220
10221         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10222                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10223
10224         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10225                 memcpy(&connect.ht_capa_mask,
10226                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10227                        sizeof(connect.ht_capa_mask));
10228
10229         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10230                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10231                         kzfree(connkeys);
10232                         return -EINVAL;
10233                 }
10234                 memcpy(&connect.ht_capa,
10235                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10236                        sizeof(connect.ht_capa));
10237         }
10238
10239         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10240                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10241
10242         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10243                 memcpy(&connect.vht_capa_mask,
10244                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10245                        sizeof(connect.vht_capa_mask));
10246
10247         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10248                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10249                         kzfree(connkeys);
10250                         return -EINVAL;
10251                 }
10252                 memcpy(&connect.vht_capa,
10253                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10254                        sizeof(connect.vht_capa));
10255         }
10256
10257         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10258                 if (!((rdev->wiphy.features &
10259                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10260                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10261                     !wiphy_ext_feature_isset(&rdev->wiphy,
10262                                              NL80211_EXT_FEATURE_RRM)) {
10263                         kzfree(connkeys);
10264                         return -EINVAL;
10265                 }
10266                 connect.flags |= ASSOC_REQ_USE_RRM;
10267         }
10268
10269         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10270         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10271                 kzfree(connkeys);
10272                 return -EOPNOTSUPP;
10273         }
10274
10275         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10276                 /* bss selection makes no sense if bssid is set */
10277                 if (connect.bssid) {
10278                         kzfree(connkeys);
10279                         return -EINVAL;
10280                 }
10281
10282                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10283                                        wiphy, &connect.bss_select);
10284                 if (err) {
10285                         kzfree(connkeys);
10286                         return err;
10287                 }
10288         }
10289
10290         if (wiphy_ext_feature_isset(&rdev->wiphy,
10291                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10292             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10293             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10294             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10295             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10296                 connect.fils_erp_username =
10297                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10298                 connect.fils_erp_username_len =
10299                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10300                 connect.fils_erp_realm =
10301                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10302                 connect.fils_erp_realm_len =
10303                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10304                 connect.fils_erp_next_seq_num =
10305                         nla_get_u16(
10306                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10307                 connect.fils_erp_rrk =
10308                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10309                 connect.fils_erp_rrk_len =
10310                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10311         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10312                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10313                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10314                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10315                 kzfree(connkeys);
10316                 return -EINVAL;
10317         }
10318
10319         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10320                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10321                         kzfree(connkeys);
10322                         GENL_SET_ERR_MSG(info,
10323                                          "external auth requires connection ownership");
10324                         return -EINVAL;
10325                 }
10326                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10327         }
10328
10329         wdev_lock(dev->ieee80211_ptr);
10330
10331         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10332                                connect.prev_bssid);
10333         if (err)
10334                 kzfree(connkeys);
10335
10336         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10337                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10338                 if (connect.bssid)
10339                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10340                                connect.bssid, ETH_ALEN);
10341                 else
10342                         memset(dev->ieee80211_ptr->disconnect_bssid,
10343                                0, ETH_ALEN);
10344         }
10345
10346         wdev_unlock(dev->ieee80211_ptr);
10347
10348         return err;
10349 }
10350
10351 static int nl80211_update_connect_params(struct sk_buff *skb,
10352                                          struct genl_info *info)
10353 {
10354         struct cfg80211_connect_params connect = {};
10355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10356         struct net_device *dev = info->user_ptr[1];
10357         struct wireless_dev *wdev = dev->ieee80211_ptr;
10358         bool fils_sk_offload;
10359         u32 auth_type;
10360         u32 changed = 0;
10361         int ret;
10362
10363         if (!rdev->ops->update_connect_params)
10364                 return -EOPNOTSUPP;
10365
10366         if (info->attrs[NL80211_ATTR_IE]) {
10367                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10368                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10369                 changed |= UPDATE_ASSOC_IES;
10370         }
10371
10372         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10373                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10374
10375         /*
10376          * when driver supports fils-sk offload all attributes must be
10377          * provided. So the else covers "fils-sk-not-all" and
10378          * "no-fils-sk-any".
10379          */
10380         if (fils_sk_offload &&
10381             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10382             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10383             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10384             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10385                 connect.fils_erp_username =
10386                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10387                 connect.fils_erp_username_len =
10388                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10389                 connect.fils_erp_realm =
10390                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10391                 connect.fils_erp_realm_len =
10392                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10393                 connect.fils_erp_next_seq_num =
10394                         nla_get_u16(
10395                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10396                 connect.fils_erp_rrk =
10397                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10398                 connect.fils_erp_rrk_len =
10399                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10400                 changed |= UPDATE_FILS_ERP_INFO;
10401         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10402                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10403                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10404                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10405                 return -EINVAL;
10406         }
10407
10408         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10409                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10410                 if (!nl80211_valid_auth_type(rdev, auth_type,
10411                                              NL80211_CMD_CONNECT))
10412                         return -EINVAL;
10413
10414                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10415                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10416                         return -EINVAL;
10417
10418                 connect.auth_type = auth_type;
10419                 changed |= UPDATE_AUTH_TYPE;
10420         }
10421
10422         wdev_lock(dev->ieee80211_ptr);
10423         if (!wdev->current_bss)
10424                 ret = -ENOLINK;
10425         else
10426                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10427         wdev_unlock(dev->ieee80211_ptr);
10428
10429         return ret;
10430 }
10431
10432 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10433 {
10434         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10435         struct net_device *dev = info->user_ptr[1];
10436         u16 reason;
10437         int ret;
10438
10439         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10440             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10441                 return -EPERM;
10442
10443         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10444                 reason = WLAN_REASON_DEAUTH_LEAVING;
10445         else
10446                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10447
10448         if (reason == 0)
10449                 return -EINVAL;
10450
10451         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10452             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10453                 return -EOPNOTSUPP;
10454
10455         wdev_lock(dev->ieee80211_ptr);
10456         ret = cfg80211_disconnect(rdev, dev, reason, true);
10457         wdev_unlock(dev->ieee80211_ptr);
10458         return ret;
10459 }
10460
10461 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10462 {
10463         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10464         struct net *net;
10465         int err;
10466
10467         if (info->attrs[NL80211_ATTR_PID]) {
10468                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10469
10470                 net = get_net_ns_by_pid(pid);
10471         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10472                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10473
10474                 net = get_net_ns_by_fd(fd);
10475         } else {
10476                 return -EINVAL;
10477         }
10478
10479         if (IS_ERR(net))
10480                 return PTR_ERR(net);
10481
10482         err = 0;
10483
10484         /* check if anything to do */
10485         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10486                 err = cfg80211_switch_netns(rdev, net);
10487
10488         put_net(net);
10489         return err;
10490 }
10491
10492 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10493 {
10494         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10495         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10496                         struct cfg80211_pmksa *pmksa) = NULL;
10497         struct net_device *dev = info->user_ptr[1];
10498         struct cfg80211_pmksa pmksa;
10499
10500         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10501
10502         if (!info->attrs[NL80211_ATTR_PMKID])
10503                 return -EINVAL;
10504
10505         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10506
10507         if (info->attrs[NL80211_ATTR_MAC]) {
10508                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10509         } else if (info->attrs[NL80211_ATTR_SSID] &&
10510                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10511                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10512                     info->attrs[NL80211_ATTR_PMK])) {
10513                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10514                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10515                 pmksa.cache_id =
10516                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10517         } else {
10518                 return -EINVAL;
10519         }
10520         if (info->attrs[NL80211_ATTR_PMK]) {
10521                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10522                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10523         }
10524
10525         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10526                 pmksa.pmk_lifetime =
10527                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10528
10529         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10530                 pmksa.pmk_reauth_threshold =
10531                         nla_get_u8(
10532                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10533
10534         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10535             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10536             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10537               wiphy_ext_feature_isset(&rdev->wiphy,
10538                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10539                 return -EOPNOTSUPP;
10540
10541         switch (info->genlhdr->cmd) {
10542         case NL80211_CMD_SET_PMKSA:
10543                 rdev_ops = rdev->ops->set_pmksa;
10544                 break;
10545         case NL80211_CMD_DEL_PMKSA:
10546                 rdev_ops = rdev->ops->del_pmksa;
10547                 break;
10548         default:
10549                 WARN_ON(1);
10550                 break;
10551         }
10552
10553         if (!rdev_ops)
10554                 return -EOPNOTSUPP;
10555
10556         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10557 }
10558
10559 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10560 {
10561         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10562         struct net_device *dev = info->user_ptr[1];
10563
10564         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10565             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10566                 return -EOPNOTSUPP;
10567
10568         if (!rdev->ops->flush_pmksa)
10569                 return -EOPNOTSUPP;
10570
10571         return rdev_flush_pmksa(rdev, dev);
10572 }
10573
10574 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10575 {
10576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10577         struct net_device *dev = info->user_ptr[1];
10578         u8 action_code, dialog_token;
10579         u32 peer_capability = 0;
10580         u16 status_code;
10581         u8 *peer;
10582         bool initiator;
10583
10584         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10585             !rdev->ops->tdls_mgmt)
10586                 return -EOPNOTSUPP;
10587
10588         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10589             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10590             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10591             !info->attrs[NL80211_ATTR_IE] ||
10592             !info->attrs[NL80211_ATTR_MAC])
10593                 return -EINVAL;
10594
10595         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10596         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10597         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10598         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10599         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10600         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10601                 peer_capability =
10602                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10603
10604         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10605                               dialog_token, status_code, peer_capability,
10606                               initiator,
10607                               nla_data(info->attrs[NL80211_ATTR_IE]),
10608                               nla_len(info->attrs[NL80211_ATTR_IE]));
10609 }
10610
10611 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10612 {
10613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10614         struct net_device *dev = info->user_ptr[1];
10615         enum nl80211_tdls_operation operation;
10616         u8 *peer;
10617
10618         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10619             !rdev->ops->tdls_oper)
10620                 return -EOPNOTSUPP;
10621
10622         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10623             !info->attrs[NL80211_ATTR_MAC])
10624                 return -EINVAL;
10625
10626         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10627         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10628
10629         return rdev_tdls_oper(rdev, dev, peer, operation);
10630 }
10631
10632 static int nl80211_remain_on_channel(struct sk_buff *skb,
10633                                      struct genl_info *info)
10634 {
10635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10636         struct wireless_dev *wdev = info->user_ptr[1];
10637         struct cfg80211_chan_def chandef;
10638         const struct cfg80211_chan_def *compat_chandef;
10639         struct sk_buff *msg;
10640         void *hdr;
10641         u64 cookie;
10642         u32 duration;
10643         int err;
10644
10645         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10646             !info->attrs[NL80211_ATTR_DURATION])
10647                 return -EINVAL;
10648
10649         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10650
10651         if (!rdev->ops->remain_on_channel ||
10652             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10653                 return -EOPNOTSUPP;
10654
10655         /*
10656          * We should be on that channel for at least a minimum amount of
10657          * time (10ms) but no longer than the driver supports.
10658          */
10659         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10660             duration > rdev->wiphy.max_remain_on_channel_duration)
10661                 return -EINVAL;
10662
10663         err = nl80211_parse_chandef(rdev, info, &chandef);
10664         if (err)
10665                 return err;
10666
10667         wdev_lock(wdev);
10668         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10669             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10670                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10671                                                              &chandef);
10672                 if (compat_chandef != &chandef) {
10673                         wdev_unlock(wdev);
10674                         return -EBUSY;
10675                 }
10676         }
10677         wdev_unlock(wdev);
10678
10679         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10680         if (!msg)
10681                 return -ENOMEM;
10682
10683         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10684                              NL80211_CMD_REMAIN_ON_CHANNEL);
10685         if (!hdr) {
10686                 err = -ENOBUFS;
10687                 goto free_msg;
10688         }
10689
10690         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10691                                      duration, &cookie);
10692
10693         if (err)
10694                 goto free_msg;
10695
10696         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10697                               NL80211_ATTR_PAD))
10698                 goto nla_put_failure;
10699
10700         genlmsg_end(msg, hdr);
10701
10702         return genlmsg_reply(msg, info);
10703
10704  nla_put_failure:
10705         err = -ENOBUFS;
10706  free_msg:
10707         nlmsg_free(msg);
10708         return err;
10709 }
10710
10711 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10712                                             struct genl_info *info)
10713 {
10714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10715         struct wireless_dev *wdev = info->user_ptr[1];
10716         u64 cookie;
10717
10718         if (!info->attrs[NL80211_ATTR_COOKIE])
10719                 return -EINVAL;
10720
10721         if (!rdev->ops->cancel_remain_on_channel)
10722                 return -EOPNOTSUPP;
10723
10724         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10725
10726         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10727 }
10728
10729 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10730                                        struct genl_info *info)
10731 {
10732         struct cfg80211_bitrate_mask mask;
10733         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10734         struct net_device *dev = info->user_ptr[1];
10735         int err;
10736
10737         if (!rdev->ops->set_bitrate_mask)
10738                 return -EOPNOTSUPP;
10739
10740         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10741         if (err)
10742                 return err;
10743
10744         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10745 }
10746
10747 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10748 {
10749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10750         struct wireless_dev *wdev = info->user_ptr[1];
10751         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10752
10753         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10754                 return -EINVAL;
10755
10756         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10757                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10758
10759         switch (wdev->iftype) {
10760         case NL80211_IFTYPE_STATION:
10761         case NL80211_IFTYPE_ADHOC:
10762         case NL80211_IFTYPE_P2P_CLIENT:
10763         case NL80211_IFTYPE_AP:
10764         case NL80211_IFTYPE_AP_VLAN:
10765         case NL80211_IFTYPE_MESH_POINT:
10766         case NL80211_IFTYPE_P2P_GO:
10767         case NL80211_IFTYPE_P2P_DEVICE:
10768                 break;
10769         case NL80211_IFTYPE_NAN:
10770         default:
10771                 return -EOPNOTSUPP;
10772         }
10773
10774         /* not much point in registering if we can't reply */
10775         if (!rdev->ops->mgmt_tx)
10776                 return -EOPNOTSUPP;
10777
10778         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10779                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10780                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10781                                            info->extack);
10782 }
10783
10784 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10785 {
10786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10787         struct wireless_dev *wdev = info->user_ptr[1];
10788         struct cfg80211_chan_def chandef;
10789         int err;
10790         void *hdr = NULL;
10791         u64 cookie;
10792         struct sk_buff *msg = NULL;
10793         struct cfg80211_mgmt_tx_params params = {
10794                 .dont_wait_for_ack =
10795                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10796         };
10797
10798         if (!info->attrs[NL80211_ATTR_FRAME])
10799                 return -EINVAL;
10800
10801         if (!rdev->ops->mgmt_tx)
10802                 return -EOPNOTSUPP;
10803
10804         switch (wdev->iftype) {
10805         case NL80211_IFTYPE_P2P_DEVICE:
10806                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10807                         return -EINVAL;
10808         case NL80211_IFTYPE_STATION:
10809         case NL80211_IFTYPE_ADHOC:
10810         case NL80211_IFTYPE_P2P_CLIENT:
10811         case NL80211_IFTYPE_AP:
10812         case NL80211_IFTYPE_AP_VLAN:
10813         case NL80211_IFTYPE_MESH_POINT:
10814         case NL80211_IFTYPE_P2P_GO:
10815                 break;
10816         case NL80211_IFTYPE_NAN:
10817         default:
10818                 return -EOPNOTSUPP;
10819         }
10820
10821         if (info->attrs[NL80211_ATTR_DURATION]) {
10822                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10823                         return -EINVAL;
10824                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10825
10826                 /*
10827                  * We should wait on the channel for at least a minimum amount
10828                  * of time (10ms) but no longer than the driver supports.
10829                  */
10830                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10831                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10832                         return -EINVAL;
10833         }
10834
10835         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10836
10837         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10838                 return -EINVAL;
10839
10840         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10841
10842         /* get the channel if any has been specified, otherwise pass NULL to
10843          * the driver. The latter will use the current one
10844          */
10845         chandef.chan = NULL;
10846         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10847                 err = nl80211_parse_chandef(rdev, info, &chandef);
10848                 if (err)
10849                         return err;
10850         }
10851
10852         if (!chandef.chan && params.offchan)
10853                 return -EINVAL;
10854
10855         wdev_lock(wdev);
10856         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10857                 wdev_unlock(wdev);
10858                 return -EBUSY;
10859         }
10860         wdev_unlock(wdev);
10861
10862         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10863         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10864
10865         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10866                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10867                 int i;
10868
10869                 if (len % sizeof(u16))
10870                         return -EINVAL;
10871
10872                 params.n_csa_offsets = len / sizeof(u16);
10873                 params.csa_offsets =
10874                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10875
10876                 /* check that all the offsets fit the frame */
10877                 for (i = 0; i < params.n_csa_offsets; i++) {
10878                         if (params.csa_offsets[i] >= params.len)
10879                                 return -EINVAL;
10880                 }
10881         }
10882
10883         if (!params.dont_wait_for_ack) {
10884                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10885                 if (!msg)
10886                         return -ENOMEM;
10887
10888                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10889                                      NL80211_CMD_FRAME);
10890                 if (!hdr) {
10891                         err = -ENOBUFS;
10892                         goto free_msg;
10893                 }
10894         }
10895
10896         params.chan = chandef.chan;
10897         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10898         if (err)
10899                 goto free_msg;
10900
10901         if (msg) {
10902                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10903                                       NL80211_ATTR_PAD))
10904                         goto nla_put_failure;
10905
10906                 genlmsg_end(msg, hdr);
10907                 return genlmsg_reply(msg, info);
10908         }
10909
10910         return 0;
10911
10912  nla_put_failure:
10913         err = -ENOBUFS;
10914  free_msg:
10915         nlmsg_free(msg);
10916         return err;
10917 }
10918
10919 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10920 {
10921         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10922         struct wireless_dev *wdev = info->user_ptr[1];
10923         u64 cookie;
10924
10925         if (!info->attrs[NL80211_ATTR_COOKIE])
10926                 return -EINVAL;
10927
10928         if (!rdev->ops->mgmt_tx_cancel_wait)
10929                 return -EOPNOTSUPP;
10930
10931         switch (wdev->iftype) {
10932         case NL80211_IFTYPE_STATION:
10933         case NL80211_IFTYPE_ADHOC:
10934         case NL80211_IFTYPE_P2P_CLIENT:
10935         case NL80211_IFTYPE_AP:
10936         case NL80211_IFTYPE_AP_VLAN:
10937         case NL80211_IFTYPE_P2P_GO:
10938         case NL80211_IFTYPE_P2P_DEVICE:
10939                 break;
10940         case NL80211_IFTYPE_NAN:
10941         default:
10942                 return -EOPNOTSUPP;
10943         }
10944
10945         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10946
10947         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10948 }
10949
10950 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10951 {
10952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10953         struct wireless_dev *wdev;
10954         struct net_device *dev = info->user_ptr[1];
10955         u8 ps_state;
10956         bool state;
10957         int err;
10958
10959         if (!info->attrs[NL80211_ATTR_PS_STATE])
10960                 return -EINVAL;
10961
10962         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10963
10964         wdev = dev->ieee80211_ptr;
10965
10966         if (!rdev->ops->set_power_mgmt)
10967                 return -EOPNOTSUPP;
10968
10969         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10970
10971         if (state == wdev->ps)
10972                 return 0;
10973
10974         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10975         if (!err)
10976                 wdev->ps = state;
10977         return err;
10978 }
10979
10980 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10981 {
10982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10983         enum nl80211_ps_state ps_state;
10984         struct wireless_dev *wdev;
10985         struct net_device *dev = info->user_ptr[1];
10986         struct sk_buff *msg;
10987         void *hdr;
10988         int err;
10989
10990         wdev = dev->ieee80211_ptr;
10991
10992         if (!rdev->ops->set_power_mgmt)
10993                 return -EOPNOTSUPP;
10994
10995         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10996         if (!msg)
10997                 return -ENOMEM;
10998
10999         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11000                              NL80211_CMD_GET_POWER_SAVE);
11001         if (!hdr) {
11002                 err = -ENOBUFS;
11003                 goto free_msg;
11004         }
11005
11006         if (wdev->ps)
11007                 ps_state = NL80211_PS_ENABLED;
11008         else
11009                 ps_state = NL80211_PS_DISABLED;
11010
11011         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11012                 goto nla_put_failure;
11013
11014         genlmsg_end(msg, hdr);
11015         return genlmsg_reply(msg, info);
11016
11017  nla_put_failure:
11018         err = -ENOBUFS;
11019  free_msg:
11020         nlmsg_free(msg);
11021         return err;
11022 }
11023
11024 static const struct nla_policy
11025 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11026         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11027         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11028         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11029         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11030         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11031         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11032         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11033 };
11034
11035 static int nl80211_set_cqm_txe(struct genl_info *info,
11036                                u32 rate, u32 pkts, u32 intvl)
11037 {
11038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11039         struct net_device *dev = info->user_ptr[1];
11040         struct wireless_dev *wdev = dev->ieee80211_ptr;
11041
11042         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11043                 return -EINVAL;
11044
11045         if (!rdev->ops->set_cqm_txe_config)
11046                 return -EOPNOTSUPP;
11047
11048         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11049             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11050                 return -EOPNOTSUPP;
11051
11052         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11053 }
11054
11055 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11056                                     struct net_device *dev)
11057 {
11058         struct wireless_dev *wdev = dev->ieee80211_ptr;
11059         s32 last, low, high;
11060         u32 hyst;
11061         int i, n, low_index;
11062         int err;
11063
11064         /* RSSI reporting disabled? */
11065         if (!wdev->cqm_config)
11066                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11067
11068         /*
11069          * Obtain current RSSI value if possible, if not and no RSSI threshold
11070          * event has been received yet, we should receive an event after a
11071          * connection is established and enough beacons received to calculate
11072          * the average.
11073          */
11074         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11075             rdev->ops->get_station) {
11076                 struct station_info sinfo = {};
11077                 u8 *mac_addr;
11078
11079                 mac_addr = wdev->current_bss->pub.bssid;
11080
11081                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11082                 if (err)
11083                         return err;
11084
11085                 cfg80211_sinfo_release_content(&sinfo);
11086                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11087                         wdev->cqm_config->last_rssi_event_value =
11088                                 (s8) sinfo.rx_beacon_signal_avg;
11089         }
11090
11091         last = wdev->cqm_config->last_rssi_event_value;
11092         hyst = wdev->cqm_config->rssi_hyst;
11093         n = wdev->cqm_config->n_rssi_thresholds;
11094
11095         for (i = 0; i < n; i++) {
11096                 i = array_index_nospec(i, n);
11097                 if (last < wdev->cqm_config->rssi_thresholds[i])
11098                         break;
11099         }
11100
11101         low_index = i - 1;
11102         if (low_index >= 0) {
11103                 low_index = array_index_nospec(low_index, n);
11104                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11105         } else {
11106                 low = S32_MIN;
11107         }
11108         if (i < n) {
11109                 i = array_index_nospec(i, n);
11110                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11111         } else {
11112                 high = S32_MAX;
11113         }
11114
11115         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11116 }
11117
11118 static int nl80211_set_cqm_rssi(struct genl_info *info,
11119                                 const s32 *thresholds, int n_thresholds,
11120                                 u32 hysteresis)
11121 {
11122         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11123         struct net_device *dev = info->user_ptr[1];
11124         struct wireless_dev *wdev = dev->ieee80211_ptr;
11125         int i, err;
11126         s32 prev = S32_MIN;
11127
11128         /* Check all values negative and sorted */
11129         for (i = 0; i < n_thresholds; i++) {
11130                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11131                         return -EINVAL;
11132
11133                 prev = thresholds[i];
11134         }
11135
11136         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11137             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11138                 return -EOPNOTSUPP;
11139
11140         wdev_lock(wdev);
11141         cfg80211_cqm_config_free(wdev);
11142         wdev_unlock(wdev);
11143
11144         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11145                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11146                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11147
11148                 return rdev_set_cqm_rssi_config(rdev, dev,
11149                                                 thresholds[0], hysteresis);
11150         }
11151
11152         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11153                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11154                 return -EOPNOTSUPP;
11155
11156         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11157                 n_thresholds = 0;
11158
11159         wdev_lock(wdev);
11160         if (n_thresholds) {
11161                 struct cfg80211_cqm_config *cqm_config;
11162
11163                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11164                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11165                 if (!cqm_config) {
11166                         err = -ENOMEM;
11167                         goto unlock;
11168                 }
11169
11170                 cqm_config->rssi_hyst = hysteresis;
11171                 cqm_config->n_rssi_thresholds = n_thresholds;
11172                 memcpy(cqm_config->rssi_thresholds, thresholds,
11173                        n_thresholds * sizeof(s32));
11174
11175                 wdev->cqm_config = cqm_config;
11176         }
11177
11178         err = cfg80211_cqm_rssi_update(rdev, dev);
11179
11180 unlock:
11181         wdev_unlock(wdev);
11182
11183         return err;
11184 }
11185
11186 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11187 {
11188         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11189         struct nlattr *cqm;
11190         int err;
11191
11192         cqm = info->attrs[NL80211_ATTR_CQM];
11193         if (!cqm)
11194                 return -EINVAL;
11195
11196         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11197                                           nl80211_attr_cqm_policy,
11198                                           info->extack);
11199         if (err)
11200                 return err;
11201
11202         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11203             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11204                 const s32 *thresholds =
11205                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11206                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11207                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11208
11209                 if (len % 4)
11210                         return -EINVAL;
11211
11212                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11213                                             hysteresis);
11214         }
11215
11216         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11217             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11218             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11219                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11220                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11221                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11222
11223                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11224         }
11225
11226         return -EINVAL;
11227 }
11228
11229 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11230 {
11231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11232         struct net_device *dev = info->user_ptr[1];
11233         struct ocb_setup setup = {};
11234         int err;
11235
11236         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11237         if (err)
11238                 return err;
11239
11240         return cfg80211_join_ocb(rdev, dev, &setup);
11241 }
11242
11243 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11244 {
11245         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11246         struct net_device *dev = info->user_ptr[1];
11247
11248         return cfg80211_leave_ocb(rdev, dev);
11249 }
11250
11251 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11252 {
11253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11254         struct net_device *dev = info->user_ptr[1];
11255         struct mesh_config cfg;
11256         struct mesh_setup setup;
11257         int err;
11258
11259         /* start with default */
11260         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11261         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11262
11263         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11264                 /* and parse parameters if given */
11265                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11266                 if (err)
11267                         return err;
11268         }
11269
11270         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11271             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11272                 return -EINVAL;
11273
11274         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11275         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11276
11277         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11278             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11279                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11280                         return -EINVAL;
11281
11282         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11283                 setup.beacon_interval =
11284                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11285
11286                 err = cfg80211_validate_beacon_int(rdev,
11287                                                    NL80211_IFTYPE_MESH_POINT,
11288                                                    setup.beacon_interval);
11289                 if (err)
11290                         return err;
11291         }
11292
11293         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11294                 setup.dtim_period =
11295                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11296                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11297                         return -EINVAL;
11298         }
11299
11300         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11301                 /* parse additional setup parameters if given */
11302                 err = nl80211_parse_mesh_setup(info, &setup);
11303                 if (err)
11304                         return err;
11305         }
11306
11307         if (setup.user_mpm)
11308                 cfg.auto_open_plinks = false;
11309
11310         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11311                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11312                 if (err)
11313                         return err;
11314         } else {
11315                 /* __cfg80211_join_mesh() will sort it out */
11316                 setup.chandef.chan = NULL;
11317         }
11318
11319         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11320                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11321                 int n_rates =
11322                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11323                 struct ieee80211_supported_band *sband;
11324
11325                 if (!setup.chandef.chan)
11326                         return -EINVAL;
11327
11328                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11329
11330                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11331                                              &setup.basic_rates);
11332                 if (err)
11333                         return err;
11334         }
11335
11336         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11337                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11338                 if (err)
11339                         return err;
11340
11341                 if (!setup.chandef.chan)
11342                         return -EINVAL;
11343
11344                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11345                                               &setup.beacon_rate);
11346                 if (err)
11347                         return err;
11348         }
11349
11350         setup.userspace_handles_dfs =
11351                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11352
11353         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11354                 int r = validate_pae_over_nl80211(rdev, info);
11355
11356                 if (r < 0)
11357                         return r;
11358
11359                 setup.control_port_over_nl80211 = true;
11360         }
11361
11362         wdev_lock(dev->ieee80211_ptr);
11363         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11364         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11365                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11366         wdev_unlock(dev->ieee80211_ptr);
11367
11368         return err;
11369 }
11370
11371 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11372 {
11373         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11374         struct net_device *dev = info->user_ptr[1];
11375
11376         return cfg80211_leave_mesh(rdev, dev);
11377 }
11378
11379 #ifdef CONFIG_PM
11380 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11381                                         struct cfg80211_registered_device *rdev)
11382 {
11383         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11384         struct nlattr *nl_pats, *nl_pat;
11385         int i, pat_len;
11386
11387         if (!wowlan->n_patterns)
11388                 return 0;
11389
11390         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11391         if (!nl_pats)
11392                 return -ENOBUFS;
11393
11394         for (i = 0; i < wowlan->n_patterns; i++) {
11395                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11396                 if (!nl_pat)
11397                         return -ENOBUFS;
11398                 pat_len = wowlan->patterns[i].pattern_len;
11399                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11400                             wowlan->patterns[i].mask) ||
11401                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11402                             wowlan->patterns[i].pattern) ||
11403                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11404                                 wowlan->patterns[i].pkt_offset))
11405                         return -ENOBUFS;
11406                 nla_nest_end(msg, nl_pat);
11407         }
11408         nla_nest_end(msg, nl_pats);
11409
11410         return 0;
11411 }
11412
11413 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11414                                    struct cfg80211_wowlan_tcp *tcp)
11415 {
11416         struct nlattr *nl_tcp;
11417
11418         if (!tcp)
11419                 return 0;
11420
11421         nl_tcp = nla_nest_start_noflag(msg,
11422                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11423         if (!nl_tcp)
11424                 return -ENOBUFS;
11425
11426         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11427             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11428             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11429             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11430             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11431             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11432                     tcp->payload_len, tcp->payload) ||
11433             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11434                         tcp->data_interval) ||
11435             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11436                     tcp->wake_len, tcp->wake_data) ||
11437             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11438                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11439                 return -ENOBUFS;
11440
11441         if (tcp->payload_seq.len &&
11442             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11443                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11444                 return -ENOBUFS;
11445
11446         if (tcp->payload_tok.len &&
11447             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11448                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11449                     &tcp->payload_tok))
11450                 return -ENOBUFS;
11451
11452         nla_nest_end(msg, nl_tcp);
11453
11454         return 0;
11455 }
11456
11457 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11458                                   struct cfg80211_sched_scan_request *req)
11459 {
11460         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11461         int i;
11462
11463         if (!req)
11464                 return 0;
11465
11466         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11467         if (!nd)
11468                 return -ENOBUFS;
11469
11470         if (req->n_scan_plans == 1 &&
11471             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11472                         req->scan_plans[0].interval * 1000))
11473                 return -ENOBUFS;
11474
11475         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11476                 return -ENOBUFS;
11477
11478         if (req->relative_rssi_set) {
11479                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11480
11481                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11482                                req->relative_rssi))
11483                         return -ENOBUFS;
11484
11485                 rssi_adjust.band = req->rssi_adjust.band;
11486                 rssi_adjust.delta = req->rssi_adjust.delta;
11487                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11488                             sizeof(rssi_adjust), &rssi_adjust))
11489                         return -ENOBUFS;
11490         }
11491
11492         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11493         if (!freqs)
11494                 return -ENOBUFS;
11495
11496         for (i = 0; i < req->n_channels; i++) {
11497                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11498                         return -ENOBUFS;
11499         }
11500
11501         nla_nest_end(msg, freqs);
11502
11503         if (req->n_match_sets) {
11504                 matches = nla_nest_start_noflag(msg,
11505                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11506                 if (!matches)
11507                         return -ENOBUFS;
11508
11509                 for (i = 0; i < req->n_match_sets; i++) {
11510                         match = nla_nest_start_noflag(msg, i);
11511                         if (!match)
11512                                 return -ENOBUFS;
11513
11514                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11515                                     req->match_sets[i].ssid.ssid_len,
11516                                     req->match_sets[i].ssid.ssid))
11517                                 return -ENOBUFS;
11518                         nla_nest_end(msg, match);
11519                 }
11520                 nla_nest_end(msg, matches);
11521         }
11522
11523         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11524         if (!scan_plans)
11525                 return -ENOBUFS;
11526
11527         for (i = 0; i < req->n_scan_plans; i++) {
11528                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11529                 if (!scan_plan)
11530                         return -ENOBUFS;
11531
11532                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11533                                 req->scan_plans[i].interval) ||
11534                     (req->scan_plans[i].iterations &&
11535                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11536                                  req->scan_plans[i].iterations)))
11537                         return -ENOBUFS;
11538                 nla_nest_end(msg, scan_plan);
11539         }
11540         nla_nest_end(msg, scan_plans);
11541
11542         nla_nest_end(msg, nd);
11543
11544         return 0;
11545 }
11546
11547 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11548 {
11549         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11550         struct sk_buff *msg;
11551         void *hdr;
11552         u32 size = NLMSG_DEFAULT_SIZE;
11553
11554         if (!rdev->wiphy.wowlan)
11555                 return -EOPNOTSUPP;
11556
11557         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11558                 /* adjust size to have room for all the data */
11559                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11560                         rdev->wiphy.wowlan_config->tcp->payload_len +
11561                         rdev->wiphy.wowlan_config->tcp->wake_len +
11562                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11563         }
11564
11565         msg = nlmsg_new(size, GFP_KERNEL);
11566         if (!msg)
11567                 return -ENOMEM;
11568
11569         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11570                              NL80211_CMD_GET_WOWLAN);
11571         if (!hdr)
11572                 goto nla_put_failure;
11573
11574         if (rdev->wiphy.wowlan_config) {
11575                 struct nlattr *nl_wowlan;
11576
11577                 nl_wowlan = nla_nest_start_noflag(msg,
11578                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11579                 if (!nl_wowlan)
11580                         goto nla_put_failure;
11581
11582                 if ((rdev->wiphy.wowlan_config->any &&
11583                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11584                     (rdev->wiphy.wowlan_config->disconnect &&
11585                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11586                     (rdev->wiphy.wowlan_config->magic_pkt &&
11587                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11588                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11589                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11590                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11591                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11592                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11593                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11594                     (rdev->wiphy.wowlan_config->rfkill_release &&
11595                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11596                         goto nla_put_failure;
11597
11598                 if (nl80211_send_wowlan_patterns(msg, rdev))
11599                         goto nla_put_failure;
11600
11601                 if (nl80211_send_wowlan_tcp(msg,
11602                                             rdev->wiphy.wowlan_config->tcp))
11603                         goto nla_put_failure;
11604
11605                 if (nl80211_send_wowlan_nd(
11606                             msg,
11607                             rdev->wiphy.wowlan_config->nd_config))
11608                         goto nla_put_failure;
11609
11610                 nla_nest_end(msg, nl_wowlan);
11611         }
11612
11613         genlmsg_end(msg, hdr);
11614         return genlmsg_reply(msg, info);
11615
11616 nla_put_failure:
11617         nlmsg_free(msg);
11618         return -ENOBUFS;
11619 }
11620
11621 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11622                                     struct nlattr *attr,
11623                                     struct cfg80211_wowlan *trig)
11624 {
11625         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11626         struct cfg80211_wowlan_tcp *cfg;
11627         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11628         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11629         u32 size;
11630         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11631         int err, port;
11632
11633         if (!rdev->wiphy.wowlan->tcp)
11634                 return -EINVAL;
11635
11636         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11637                                           nl80211_wowlan_tcp_policy, NULL);
11638         if (err)
11639                 return err;
11640
11641         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11642             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11643             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11644             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11645             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11646             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11647             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11648             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11649                 return -EINVAL;
11650
11651         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11652         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11653                 return -EINVAL;
11654
11655         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11656                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11657             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11658                 return -EINVAL;
11659
11660         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11661         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11662                 return -EINVAL;
11663
11664         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11665         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11666                 return -EINVAL;
11667
11668         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11669                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11670
11671                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11672                 tokens_size = tokln - sizeof(*tok);
11673
11674                 if (!tok->len || tokens_size % tok->len)
11675                         return -EINVAL;
11676                 if (!rdev->wiphy.wowlan->tcp->tok)
11677                         return -EINVAL;
11678                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11679                         return -EINVAL;
11680                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11681                         return -EINVAL;
11682                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11683                         return -EINVAL;
11684                 if (tok->offset + tok->len > data_size)
11685                         return -EINVAL;
11686         }
11687
11688         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11689                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11690                 if (!rdev->wiphy.wowlan->tcp->seq)
11691                         return -EINVAL;
11692                 if (seq->len == 0 || seq->len > 4)
11693                         return -EINVAL;
11694                 if (seq->len + seq->offset > data_size)
11695                         return -EINVAL;
11696         }
11697
11698         size = sizeof(*cfg);
11699         size += data_size;
11700         size += wake_size + wake_mask_size;
11701         size += tokens_size;
11702
11703         cfg = kzalloc(size, GFP_KERNEL);
11704         if (!cfg)
11705                 return -ENOMEM;
11706         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11707         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11708         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11709                ETH_ALEN);
11710         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11711                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11712         else
11713                 port = 0;
11714 #ifdef CONFIG_INET
11715         /* allocate a socket and port for it and use it */
11716         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11717                             IPPROTO_TCP, &cfg->sock, 1);
11718         if (err) {
11719                 kfree(cfg);
11720                 return err;
11721         }
11722         if (inet_csk_get_port(cfg->sock->sk, port)) {
11723                 sock_release(cfg->sock);
11724                 kfree(cfg);
11725                 return -EADDRINUSE;
11726         }
11727         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11728 #else
11729         if (!port) {
11730                 kfree(cfg);
11731                 return -EINVAL;
11732         }
11733         cfg->src_port = port;
11734 #endif
11735
11736         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11737         cfg->payload_len = data_size;
11738         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11739         memcpy((void *)cfg->payload,
11740                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11741                data_size);
11742         if (seq)
11743                 cfg->payload_seq = *seq;
11744         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11745         cfg->wake_len = wake_size;
11746         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11747         memcpy((void *)cfg->wake_data,
11748                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11749                wake_size);
11750         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11751                          data_size + wake_size;
11752         memcpy((void *)cfg->wake_mask,
11753                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11754                wake_mask_size);
11755         if (tok) {
11756                 cfg->tokens_size = tokens_size;
11757                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11758         }
11759
11760         trig->tcp = cfg;
11761
11762         return 0;
11763 }
11764
11765 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11766                                    const struct wiphy_wowlan_support *wowlan,
11767                                    struct nlattr *attr,
11768                                    struct cfg80211_wowlan *trig)
11769 {
11770         struct nlattr **tb;
11771         int err;
11772
11773         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11774         if (!tb)
11775                 return -ENOMEM;
11776
11777         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11778                 err = -EOPNOTSUPP;
11779                 goto out;
11780         }
11781
11782         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11783                                           nl80211_policy, NULL);
11784         if (err)
11785                 goto out;
11786
11787         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11788                                                    wowlan->max_nd_match_sets);
11789         err = PTR_ERR_OR_ZERO(trig->nd_config);
11790         if (err)
11791                 trig->nd_config = NULL;
11792
11793 out:
11794         kfree(tb);
11795         return err;
11796 }
11797
11798 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11799 {
11800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11801         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11802         struct cfg80211_wowlan new_triggers = {};
11803         struct cfg80211_wowlan *ntrig;
11804         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11805         int err, i;
11806         bool prev_enabled = rdev->wiphy.wowlan_config;
11807         bool regular = false;
11808
11809         if (!wowlan)
11810                 return -EOPNOTSUPP;
11811
11812         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11813                 cfg80211_rdev_free_wowlan(rdev);
11814                 rdev->wiphy.wowlan_config = NULL;
11815                 goto set_wakeup;
11816         }
11817
11818         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11819                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11820                                           nl80211_wowlan_policy, info->extack);
11821         if (err)
11822                 return err;
11823
11824         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11825                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11826                         return -EINVAL;
11827                 new_triggers.any = true;
11828         }
11829
11830         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11831                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11832                         return -EINVAL;
11833                 new_triggers.disconnect = true;
11834                 regular = true;
11835         }
11836
11837         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11838                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11839                         return -EINVAL;
11840                 new_triggers.magic_pkt = true;
11841                 regular = true;
11842         }
11843
11844         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11845                 return -EINVAL;
11846
11847         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11848                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11849                         return -EINVAL;
11850                 new_triggers.gtk_rekey_failure = true;
11851                 regular = true;
11852         }
11853
11854         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11855                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11856                         return -EINVAL;
11857                 new_triggers.eap_identity_req = true;
11858                 regular = true;
11859         }
11860
11861         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11862                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11863                         return -EINVAL;
11864                 new_triggers.four_way_handshake = true;
11865                 regular = true;
11866         }
11867
11868         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11869                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11870                         return -EINVAL;
11871                 new_triggers.rfkill_release = true;
11872                 regular = true;
11873         }
11874
11875         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11876                 struct nlattr *pat;
11877                 int n_patterns = 0;
11878                 int rem, pat_len, mask_len, pkt_offset;
11879                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11880
11881                 regular = true;
11882
11883                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11884                                     rem)
11885                         n_patterns++;
11886                 if (n_patterns > wowlan->n_patterns)
11887                         return -EINVAL;
11888
11889                 new_triggers.patterns = kcalloc(n_patterns,
11890                                                 sizeof(new_triggers.patterns[0]),
11891                                                 GFP_KERNEL);
11892                 if (!new_triggers.patterns)
11893                         return -ENOMEM;
11894
11895                 new_triggers.n_patterns = n_patterns;
11896                 i = 0;
11897
11898                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11899                                     rem) {
11900                         u8 *mask_pat;
11901
11902                         err = nla_parse_nested_deprecated(pat_tb,
11903                                                           MAX_NL80211_PKTPAT,
11904                                                           pat,
11905                                                           nl80211_packet_pattern_policy,
11906                                                           info->extack);
11907                         if (err)
11908                                 goto error;
11909
11910                         err = -EINVAL;
11911                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11912                             !pat_tb[NL80211_PKTPAT_PATTERN])
11913                                 goto error;
11914                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11915                         mask_len = DIV_ROUND_UP(pat_len, 8);
11916                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11917                                 goto error;
11918                         if (pat_len > wowlan->pattern_max_len ||
11919                             pat_len < wowlan->pattern_min_len)
11920                                 goto error;
11921
11922                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11923                                 pkt_offset = 0;
11924                         else
11925                                 pkt_offset = nla_get_u32(
11926                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11927                         if (pkt_offset > wowlan->max_pkt_offset)
11928                                 goto error;
11929                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11930
11931                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11932                         if (!mask_pat) {
11933                                 err = -ENOMEM;
11934                                 goto error;
11935                         }
11936                         new_triggers.patterns[i].mask = mask_pat;
11937                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11938                                mask_len);
11939                         mask_pat += mask_len;
11940                         new_triggers.patterns[i].pattern = mask_pat;
11941                         new_triggers.patterns[i].pattern_len = pat_len;
11942                         memcpy(mask_pat,
11943                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11944                                pat_len);
11945                         i++;
11946                 }
11947         }
11948
11949         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11950                 regular = true;
11951                 err = nl80211_parse_wowlan_tcp(
11952                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11953                         &new_triggers);
11954                 if (err)
11955                         goto error;
11956         }
11957
11958         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11959                 regular = true;
11960                 err = nl80211_parse_wowlan_nd(
11961                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11962                         &new_triggers);
11963                 if (err)
11964                         goto error;
11965         }
11966
11967         /* The 'any' trigger means the device continues operating more or less
11968          * as in its normal operation mode and wakes up the host on most of the
11969          * normal interrupts (like packet RX, ...)
11970          * It therefore makes little sense to combine with the more constrained
11971          * wakeup trigger modes.
11972          */
11973         if (new_triggers.any && regular) {
11974                 err = -EINVAL;
11975                 goto error;
11976         }
11977
11978         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11979         if (!ntrig) {
11980                 err = -ENOMEM;
11981                 goto error;
11982         }
11983         cfg80211_rdev_free_wowlan(rdev);
11984         rdev->wiphy.wowlan_config = ntrig;
11985
11986  set_wakeup:
11987         if (rdev->ops->set_wakeup &&
11988             prev_enabled != !!rdev->wiphy.wowlan_config)
11989                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11990
11991         return 0;
11992  error:
11993         for (i = 0; i < new_triggers.n_patterns; i++)
11994                 kfree(new_triggers.patterns[i].mask);
11995         kfree(new_triggers.patterns);
11996         if (new_triggers.tcp && new_triggers.tcp->sock)
11997                 sock_release(new_triggers.tcp->sock);
11998         kfree(new_triggers.tcp);
11999         kfree(new_triggers.nd_config);
12000         return err;
12001 }
12002 #endif
12003
12004 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12005                                        struct cfg80211_registered_device *rdev)
12006 {
12007         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12008         int i, j, pat_len;
12009         struct cfg80211_coalesce_rules *rule;
12010
12011         if (!rdev->coalesce->n_rules)
12012                 return 0;
12013
12014         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12015         if (!nl_rules)
12016                 return -ENOBUFS;
12017
12018         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12019                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12020                 if (!nl_rule)
12021                         return -ENOBUFS;
12022
12023                 rule = &rdev->coalesce->rules[i];
12024                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12025                                 rule->delay))
12026                         return -ENOBUFS;
12027
12028                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12029                                 rule->condition))
12030                         return -ENOBUFS;
12031
12032                 nl_pats = nla_nest_start_noflag(msg,
12033                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12034                 if (!nl_pats)
12035                         return -ENOBUFS;
12036
12037                 for (j = 0; j < rule->n_patterns; j++) {
12038                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12039                         if (!nl_pat)
12040                                 return -ENOBUFS;
12041                         pat_len = rule->patterns[j].pattern_len;
12042                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12043                                     DIV_ROUND_UP(pat_len, 8),
12044                                     rule->patterns[j].mask) ||
12045                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12046                                     rule->patterns[j].pattern) ||
12047                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12048                                         rule->patterns[j].pkt_offset))
12049                                 return -ENOBUFS;
12050                         nla_nest_end(msg, nl_pat);
12051                 }
12052                 nla_nest_end(msg, nl_pats);
12053                 nla_nest_end(msg, nl_rule);
12054         }
12055         nla_nest_end(msg, nl_rules);
12056
12057         return 0;
12058 }
12059
12060 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12061 {
12062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12063         struct sk_buff *msg;
12064         void *hdr;
12065
12066         if (!rdev->wiphy.coalesce)
12067                 return -EOPNOTSUPP;
12068
12069         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12070         if (!msg)
12071                 return -ENOMEM;
12072
12073         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12074                              NL80211_CMD_GET_COALESCE);
12075         if (!hdr)
12076                 goto nla_put_failure;
12077
12078         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12079                 goto nla_put_failure;
12080
12081         genlmsg_end(msg, hdr);
12082         return genlmsg_reply(msg, info);
12083
12084 nla_put_failure:
12085         nlmsg_free(msg);
12086         return -ENOBUFS;
12087 }
12088
12089 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12090 {
12091         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12092         int i, j;
12093         struct cfg80211_coalesce_rules *rule;
12094
12095         if (!coalesce)
12096                 return;
12097
12098         for (i = 0; i < coalesce->n_rules; i++) {
12099                 rule = &coalesce->rules[i];
12100                 for (j = 0; j < rule->n_patterns; j++)
12101                         kfree(rule->patterns[j].mask);
12102                 kfree(rule->patterns);
12103         }
12104         kfree(coalesce->rules);
12105         kfree(coalesce);
12106         rdev->coalesce = NULL;
12107 }
12108
12109 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12110                                        struct nlattr *rule,
12111                                        struct cfg80211_coalesce_rules *new_rule)
12112 {
12113         int err, i;
12114         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12115         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12116         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12117         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12118
12119         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12120                                           rule, nl80211_coalesce_policy, NULL);
12121         if (err)
12122                 return err;
12123
12124         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12125                 new_rule->delay =
12126                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12127         if (new_rule->delay > coalesce->max_delay)
12128                 return -EINVAL;
12129
12130         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12131                 new_rule->condition =
12132                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12133
12134         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12135                 return -EINVAL;
12136
12137         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12138                             rem)
12139                 n_patterns++;
12140         if (n_patterns > coalesce->n_patterns)
12141                 return -EINVAL;
12142
12143         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12144                                      GFP_KERNEL);
12145         if (!new_rule->patterns)
12146                 return -ENOMEM;
12147
12148         new_rule->n_patterns = n_patterns;
12149         i = 0;
12150
12151         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12152                             rem) {
12153                 u8 *mask_pat;
12154
12155                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12156                                                   pat,
12157                                                   nl80211_packet_pattern_policy,
12158                                                   NULL);
12159                 if (err)
12160                         return err;
12161
12162                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12163                     !pat_tb[NL80211_PKTPAT_PATTERN])
12164                         return -EINVAL;
12165                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12166                 mask_len = DIV_ROUND_UP(pat_len, 8);
12167                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12168                         return -EINVAL;
12169                 if (pat_len > coalesce->pattern_max_len ||
12170                     pat_len < coalesce->pattern_min_len)
12171                         return -EINVAL;
12172
12173                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12174                         pkt_offset = 0;
12175                 else
12176                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12177                 if (pkt_offset > coalesce->max_pkt_offset)
12178                         return -EINVAL;
12179                 new_rule->patterns[i].pkt_offset = pkt_offset;
12180
12181                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12182                 if (!mask_pat)
12183                         return -ENOMEM;
12184
12185                 new_rule->patterns[i].mask = mask_pat;
12186                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12187                        mask_len);
12188
12189                 mask_pat += mask_len;
12190                 new_rule->patterns[i].pattern = mask_pat;
12191                 new_rule->patterns[i].pattern_len = pat_len;
12192                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12193                        pat_len);
12194                 i++;
12195         }
12196
12197         return 0;
12198 }
12199
12200 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12201 {
12202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12203         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12204         struct cfg80211_coalesce new_coalesce = {};
12205         struct cfg80211_coalesce *n_coalesce;
12206         int err, rem_rule, n_rules = 0, i, j;
12207         struct nlattr *rule;
12208         struct cfg80211_coalesce_rules *tmp_rule;
12209
12210         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12211                 return -EOPNOTSUPP;
12212
12213         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12214                 cfg80211_rdev_free_coalesce(rdev);
12215                 rdev_set_coalesce(rdev, NULL);
12216                 return 0;
12217         }
12218
12219         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12220                             rem_rule)
12221                 n_rules++;
12222         if (n_rules > coalesce->n_rules)
12223                 return -EINVAL;
12224
12225         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12226                                      GFP_KERNEL);
12227         if (!new_coalesce.rules)
12228                 return -ENOMEM;
12229
12230         new_coalesce.n_rules = n_rules;
12231         i = 0;
12232
12233         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12234                             rem_rule) {
12235                 err = nl80211_parse_coalesce_rule(rdev, rule,
12236                                                   &new_coalesce.rules[i]);
12237                 if (err)
12238                         goto error;
12239
12240                 i++;
12241         }
12242
12243         err = rdev_set_coalesce(rdev, &new_coalesce);
12244         if (err)
12245                 goto error;
12246
12247         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12248         if (!n_coalesce) {
12249                 err = -ENOMEM;
12250                 goto error;
12251         }
12252         cfg80211_rdev_free_coalesce(rdev);
12253         rdev->coalesce = n_coalesce;
12254
12255         return 0;
12256 error:
12257         for (i = 0; i < new_coalesce.n_rules; i++) {
12258                 tmp_rule = &new_coalesce.rules[i];
12259                 for (j = 0; j < tmp_rule->n_patterns; j++)
12260                         kfree(tmp_rule->patterns[j].mask);
12261                 kfree(tmp_rule->patterns);
12262         }
12263         kfree(new_coalesce.rules);
12264
12265         return err;
12266 }
12267
12268 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12269 {
12270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12271         struct net_device *dev = info->user_ptr[1];
12272         struct wireless_dev *wdev = dev->ieee80211_ptr;
12273         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12274         struct cfg80211_gtk_rekey_data rekey_data;
12275         int err;
12276
12277         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12278                 return -EINVAL;
12279
12280         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12281                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12282                                           nl80211_rekey_policy, info->extack);
12283         if (err)
12284                 return err;
12285
12286         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12287             !tb[NL80211_REKEY_DATA_KCK])
12288                 return -EINVAL;
12289         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12290                 return -ERANGE;
12291         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12292                 return -ERANGE;
12293         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12294                 return -ERANGE;
12295
12296         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12297         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12298         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12299
12300         wdev_lock(wdev);
12301         if (!wdev->current_bss) {
12302                 err = -ENOTCONN;
12303                 goto out;
12304         }
12305
12306         if (!rdev->ops->set_rekey_data) {
12307                 err = -EOPNOTSUPP;
12308                 goto out;
12309         }
12310
12311         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12312  out:
12313         wdev_unlock(wdev);
12314         return err;
12315 }
12316
12317 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12318                                              struct genl_info *info)
12319 {
12320         struct net_device *dev = info->user_ptr[1];
12321         struct wireless_dev *wdev = dev->ieee80211_ptr;
12322
12323         if (wdev->iftype != NL80211_IFTYPE_AP &&
12324             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12325                 return -EINVAL;
12326
12327         if (wdev->ap_unexpected_nlportid)
12328                 return -EBUSY;
12329
12330         wdev->ap_unexpected_nlportid = info->snd_portid;
12331         return 0;
12332 }
12333
12334 static int nl80211_probe_client(struct sk_buff *skb,
12335                                 struct genl_info *info)
12336 {
12337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12338         struct net_device *dev = info->user_ptr[1];
12339         struct wireless_dev *wdev = dev->ieee80211_ptr;
12340         struct sk_buff *msg;
12341         void *hdr;
12342         const u8 *addr;
12343         u64 cookie;
12344         int err;
12345
12346         if (wdev->iftype != NL80211_IFTYPE_AP &&
12347             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12348                 return -EOPNOTSUPP;
12349
12350         if (!info->attrs[NL80211_ATTR_MAC])
12351                 return -EINVAL;
12352
12353         if (!rdev->ops->probe_client)
12354                 return -EOPNOTSUPP;
12355
12356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12357         if (!msg)
12358                 return -ENOMEM;
12359
12360         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12361                              NL80211_CMD_PROBE_CLIENT);
12362         if (!hdr) {
12363                 err = -ENOBUFS;
12364                 goto free_msg;
12365         }
12366
12367         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12368
12369         err = rdev_probe_client(rdev, dev, addr, &cookie);
12370         if (err)
12371                 goto free_msg;
12372
12373         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12374                               NL80211_ATTR_PAD))
12375                 goto nla_put_failure;
12376
12377         genlmsg_end(msg, hdr);
12378
12379         return genlmsg_reply(msg, info);
12380
12381  nla_put_failure:
12382         err = -ENOBUFS;
12383  free_msg:
12384         nlmsg_free(msg);
12385         return err;
12386 }
12387
12388 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12389 {
12390         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12391         struct cfg80211_beacon_registration *reg, *nreg;
12392         int rv;
12393
12394         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12395                 return -EOPNOTSUPP;
12396
12397         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12398         if (!nreg)
12399                 return -ENOMEM;
12400
12401         /* First, check if already registered. */
12402         spin_lock_bh(&rdev->beacon_registrations_lock);
12403         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12404                 if (reg->nlportid == info->snd_portid) {
12405                         rv = -EALREADY;
12406                         goto out_err;
12407                 }
12408         }
12409         /* Add it to the list */
12410         nreg->nlportid = info->snd_portid;
12411         list_add(&nreg->list, &rdev->beacon_registrations);
12412
12413         spin_unlock_bh(&rdev->beacon_registrations_lock);
12414
12415         return 0;
12416 out_err:
12417         spin_unlock_bh(&rdev->beacon_registrations_lock);
12418         kfree(nreg);
12419         return rv;
12420 }
12421
12422 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12423 {
12424         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12425         struct wireless_dev *wdev = info->user_ptr[1];
12426         int err;
12427
12428         if (!rdev->ops->start_p2p_device)
12429                 return -EOPNOTSUPP;
12430
12431         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12432                 return -EOPNOTSUPP;
12433
12434         if (wdev_running(wdev))
12435                 return 0;
12436
12437         if (rfkill_blocked(rdev->rfkill))
12438                 return -ERFKILL;
12439
12440         err = rdev_start_p2p_device(rdev, wdev);
12441         if (err)
12442                 return err;
12443
12444         wdev->is_running = true;
12445         rdev->opencount++;
12446
12447         return 0;
12448 }
12449
12450 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12451 {
12452         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12453         struct wireless_dev *wdev = info->user_ptr[1];
12454
12455         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12456                 return -EOPNOTSUPP;
12457
12458         if (!rdev->ops->stop_p2p_device)
12459                 return -EOPNOTSUPP;
12460
12461         cfg80211_stop_p2p_device(rdev, wdev);
12462
12463         return 0;
12464 }
12465
12466 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12467 {
12468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12469         struct wireless_dev *wdev = info->user_ptr[1];
12470         struct cfg80211_nan_conf conf = {};
12471         int err;
12472
12473         if (wdev->iftype != NL80211_IFTYPE_NAN)
12474                 return -EOPNOTSUPP;
12475
12476         if (wdev_running(wdev))
12477                 return -EEXIST;
12478
12479         if (rfkill_blocked(rdev->rfkill))
12480                 return -ERFKILL;
12481
12482         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12483                 return -EINVAL;
12484
12485         conf.master_pref =
12486                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12487
12488         if (info->attrs[NL80211_ATTR_BANDS]) {
12489                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12490
12491                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12492                         return -EOPNOTSUPP;
12493
12494                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12495                         return -EINVAL;
12496
12497                 conf.bands = bands;
12498         }
12499
12500         err = rdev_start_nan(rdev, wdev, &conf);
12501         if (err)
12502                 return err;
12503
12504         wdev->is_running = true;
12505         rdev->opencount++;
12506
12507         return 0;
12508 }
12509
12510 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12511 {
12512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12513         struct wireless_dev *wdev = info->user_ptr[1];
12514
12515         if (wdev->iftype != NL80211_IFTYPE_NAN)
12516                 return -EOPNOTSUPP;
12517
12518         cfg80211_stop_nan(rdev, wdev);
12519
12520         return 0;
12521 }
12522
12523 static int validate_nan_filter(struct nlattr *filter_attr)
12524 {
12525         struct nlattr *attr;
12526         int len = 0, n_entries = 0, rem;
12527
12528         nla_for_each_nested(attr, filter_attr, rem) {
12529                 len += nla_len(attr);
12530                 n_entries++;
12531         }
12532
12533         if (len >= U8_MAX)
12534                 return -EINVAL;
12535
12536         return n_entries;
12537 }
12538
12539 static int handle_nan_filter(struct nlattr *attr_filter,
12540                              struct cfg80211_nan_func *func,
12541                              bool tx)
12542 {
12543         struct nlattr *attr;
12544         int n_entries, rem, i;
12545         struct cfg80211_nan_func_filter *filter;
12546
12547         n_entries = validate_nan_filter(attr_filter);
12548         if (n_entries < 0)
12549                 return n_entries;
12550
12551         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12552
12553         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12554         if (!filter)
12555                 return -ENOMEM;
12556
12557         i = 0;
12558         nla_for_each_nested(attr, attr_filter, rem) {
12559                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12560                 filter[i].len = nla_len(attr);
12561                 i++;
12562         }
12563         if (tx) {
12564                 func->num_tx_filters = n_entries;
12565                 func->tx_filters = filter;
12566         } else {
12567                 func->num_rx_filters = n_entries;
12568                 func->rx_filters = filter;
12569         }
12570
12571         return 0;
12572 }
12573
12574 static int nl80211_nan_add_func(struct sk_buff *skb,
12575                                 struct genl_info *info)
12576 {
12577         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12578         struct wireless_dev *wdev = info->user_ptr[1];
12579         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12580         struct cfg80211_nan_func *func;
12581         struct sk_buff *msg = NULL;
12582         void *hdr = NULL;
12583         int err = 0;
12584
12585         if (wdev->iftype != NL80211_IFTYPE_NAN)
12586                 return -EOPNOTSUPP;
12587
12588         if (!wdev_running(wdev))
12589                 return -ENOTCONN;
12590
12591         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12592                 return -EINVAL;
12593
12594         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12595                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12596                                           nl80211_nan_func_policy,
12597                                           info->extack);
12598         if (err)
12599                 return err;
12600
12601         func = kzalloc(sizeof(*func), GFP_KERNEL);
12602         if (!func)
12603                 return -ENOMEM;
12604
12605         func->cookie = cfg80211_assign_cookie(rdev);
12606
12607         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12608             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12609                 err = -EINVAL;
12610                 goto out;
12611         }
12612
12613
12614         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12615
12616         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12617                 err = -EINVAL;
12618                 goto out;
12619         }
12620
12621         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12622                sizeof(func->service_id));
12623
12624         func->close_range =
12625                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12626
12627         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12628                 func->serv_spec_info_len =
12629                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12630                 func->serv_spec_info =
12631                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12632                                 func->serv_spec_info_len,
12633                                 GFP_KERNEL);
12634                 if (!func->serv_spec_info) {
12635                         err = -ENOMEM;
12636                         goto out;
12637                 }
12638         }
12639
12640         if (tb[NL80211_NAN_FUNC_TTL])
12641                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12642
12643         switch (func->type) {
12644         case NL80211_NAN_FUNC_PUBLISH:
12645                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12646                         err = -EINVAL;
12647                         goto out;
12648                 }
12649
12650                 func->publish_type =
12651                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12652                 func->publish_bcast =
12653                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12654
12655                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12656                         func->publish_bcast) {
12657                         err = -EINVAL;
12658                         goto out;
12659                 }
12660                 break;
12661         case NL80211_NAN_FUNC_SUBSCRIBE:
12662                 func->subscribe_active =
12663                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12664                 break;
12665         case NL80211_NAN_FUNC_FOLLOW_UP:
12666                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12667                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12668                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12669                         err = -EINVAL;
12670                         goto out;
12671                 }
12672
12673                 func->followup_id =
12674                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12675                 func->followup_reqid =
12676                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12677                 memcpy(func->followup_dest.addr,
12678                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12679                        sizeof(func->followup_dest.addr));
12680                 if (func->ttl) {
12681                         err = -EINVAL;
12682                         goto out;
12683                 }
12684                 break;
12685         default:
12686                 err = -EINVAL;
12687                 goto out;
12688         }
12689
12690         if (tb[NL80211_NAN_FUNC_SRF]) {
12691                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12692
12693                 err = nla_parse_nested_deprecated(srf_tb,
12694                                                   NL80211_NAN_SRF_ATTR_MAX,
12695                                                   tb[NL80211_NAN_FUNC_SRF],
12696                                                   nl80211_nan_srf_policy,
12697                                                   info->extack);
12698                 if (err)
12699                         goto out;
12700
12701                 func->srf_include =
12702                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12703
12704                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12705                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12706                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12707                                 err = -EINVAL;
12708                                 goto out;
12709                         }
12710
12711                         func->srf_bf_len =
12712                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12713                         func->srf_bf =
12714                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12715                                         func->srf_bf_len, GFP_KERNEL);
12716                         if (!func->srf_bf) {
12717                                 err = -ENOMEM;
12718                                 goto out;
12719                         }
12720
12721                         func->srf_bf_idx =
12722                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12723                 } else {
12724                         struct nlattr *attr, *mac_attr =
12725                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12726                         int n_entries, rem, i = 0;
12727
12728                         if (!mac_attr) {
12729                                 err = -EINVAL;
12730                                 goto out;
12731                         }
12732
12733                         n_entries = validate_acl_mac_addrs(mac_attr);
12734                         if (n_entries <= 0) {
12735                                 err = -EINVAL;
12736                                 goto out;
12737                         }
12738
12739                         func->srf_num_macs = n_entries;
12740                         func->srf_macs =
12741                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12742                                         GFP_KERNEL);
12743                         if (!func->srf_macs) {
12744                                 err = -ENOMEM;
12745                                 goto out;
12746                         }
12747
12748                         nla_for_each_nested(attr, mac_attr, rem)
12749                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12750                                        sizeof(*func->srf_macs));
12751                 }
12752         }
12753
12754         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12755                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12756                                         func, true);
12757                 if (err)
12758                         goto out;
12759         }
12760
12761         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12762                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12763                                         func, false);
12764                 if (err)
12765                         goto out;
12766         }
12767
12768         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12769         if (!msg) {
12770                 err = -ENOMEM;
12771                 goto out;
12772         }
12773
12774         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12775                              NL80211_CMD_ADD_NAN_FUNCTION);
12776         /* This can't really happen - we just allocated 4KB */
12777         if (WARN_ON(!hdr)) {
12778                 err = -ENOMEM;
12779                 goto out;
12780         }
12781
12782         err = rdev_add_nan_func(rdev, wdev, func);
12783 out:
12784         if (err < 0) {
12785                 cfg80211_free_nan_func(func);
12786                 nlmsg_free(msg);
12787                 return err;
12788         }
12789
12790         /* propagate the instance id and cookie to userspace  */
12791         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12792                               NL80211_ATTR_PAD))
12793                 goto nla_put_failure;
12794
12795         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12796         if (!func_attr)
12797                 goto nla_put_failure;
12798
12799         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12800                        func->instance_id))
12801                 goto nla_put_failure;
12802
12803         nla_nest_end(msg, func_attr);
12804
12805         genlmsg_end(msg, hdr);
12806         return genlmsg_reply(msg, info);
12807
12808 nla_put_failure:
12809         nlmsg_free(msg);
12810         return -ENOBUFS;
12811 }
12812
12813 static int nl80211_nan_del_func(struct sk_buff *skb,
12814                                struct genl_info *info)
12815 {
12816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12817         struct wireless_dev *wdev = info->user_ptr[1];
12818         u64 cookie;
12819
12820         if (wdev->iftype != NL80211_IFTYPE_NAN)
12821                 return -EOPNOTSUPP;
12822
12823         if (!wdev_running(wdev))
12824                 return -ENOTCONN;
12825
12826         if (!info->attrs[NL80211_ATTR_COOKIE])
12827                 return -EINVAL;
12828
12829         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12830
12831         rdev_del_nan_func(rdev, wdev, cookie);
12832
12833         return 0;
12834 }
12835
12836 static int nl80211_nan_change_config(struct sk_buff *skb,
12837                                      struct genl_info *info)
12838 {
12839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12840         struct wireless_dev *wdev = info->user_ptr[1];
12841         struct cfg80211_nan_conf conf = {};
12842         u32 changed = 0;
12843
12844         if (wdev->iftype != NL80211_IFTYPE_NAN)
12845                 return -EOPNOTSUPP;
12846
12847         if (!wdev_running(wdev))
12848                 return -ENOTCONN;
12849
12850         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12851                 conf.master_pref =
12852                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12853                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12854                         return -EINVAL;
12855
12856                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12857         }
12858
12859         if (info->attrs[NL80211_ATTR_BANDS]) {
12860                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12861
12862                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12863                         return -EOPNOTSUPP;
12864
12865                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12866                         return -EINVAL;
12867
12868                 conf.bands = bands;
12869                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12870         }
12871
12872         if (!changed)
12873                 return -EINVAL;
12874
12875         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12876 }
12877
12878 void cfg80211_nan_match(struct wireless_dev *wdev,
12879                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12880 {
12881         struct wiphy *wiphy = wdev->wiphy;
12882         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12883         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12884         struct sk_buff *msg;
12885         void *hdr;
12886
12887         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12888                 return;
12889
12890         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12891         if (!msg)
12892                 return;
12893
12894         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12895         if (!hdr) {
12896                 nlmsg_free(msg);
12897                 return;
12898         }
12899
12900         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12901             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12902                                          wdev->netdev->ifindex)) ||
12903             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12904                               NL80211_ATTR_PAD))
12905                 goto nla_put_failure;
12906
12907         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12908                               NL80211_ATTR_PAD) ||
12909             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12910                 goto nla_put_failure;
12911
12912         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12913         if (!match_attr)
12914                 goto nla_put_failure;
12915
12916         local_func_attr = nla_nest_start_noflag(msg,
12917                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12918         if (!local_func_attr)
12919                 goto nla_put_failure;
12920
12921         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12922                 goto nla_put_failure;
12923
12924         nla_nest_end(msg, local_func_attr);
12925
12926         peer_func_attr = nla_nest_start_noflag(msg,
12927                                                NL80211_NAN_MATCH_FUNC_PEER);
12928         if (!peer_func_attr)
12929                 goto nla_put_failure;
12930
12931         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12932             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12933                 goto nla_put_failure;
12934
12935         if (match->info && match->info_len &&
12936             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12937                     match->info))
12938                 goto nla_put_failure;
12939
12940         nla_nest_end(msg, peer_func_attr);
12941         nla_nest_end(msg, match_attr);
12942         genlmsg_end(msg, hdr);
12943
12944         if (!wdev->owner_nlportid)
12945                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12946                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12947         else
12948                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12949                                 wdev->owner_nlportid);
12950
12951         return;
12952
12953 nla_put_failure:
12954         nlmsg_free(msg);
12955 }
12956 EXPORT_SYMBOL(cfg80211_nan_match);
12957
12958 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12959                                   u8 inst_id,
12960                                   enum nl80211_nan_func_term_reason reason,
12961                                   u64 cookie, gfp_t gfp)
12962 {
12963         struct wiphy *wiphy = wdev->wiphy;
12964         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12965         struct sk_buff *msg;
12966         struct nlattr *func_attr;
12967         void *hdr;
12968
12969         if (WARN_ON(!inst_id))
12970                 return;
12971
12972         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12973         if (!msg)
12974                 return;
12975
12976         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12977         if (!hdr) {
12978                 nlmsg_free(msg);
12979                 return;
12980         }
12981
12982         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12983             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12984                                          wdev->netdev->ifindex)) ||
12985             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12986                               NL80211_ATTR_PAD))
12987                 goto nla_put_failure;
12988
12989         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12990                               NL80211_ATTR_PAD))
12991                 goto nla_put_failure;
12992
12993         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12994         if (!func_attr)
12995                 goto nla_put_failure;
12996
12997         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12998             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12999                 goto nla_put_failure;
13000
13001         nla_nest_end(msg, func_attr);
13002         genlmsg_end(msg, hdr);
13003
13004         if (!wdev->owner_nlportid)
13005                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13006                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13007         else
13008                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13009                                 wdev->owner_nlportid);
13010
13011         return;
13012
13013 nla_put_failure:
13014         nlmsg_free(msg);
13015 }
13016 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13017
13018 static int nl80211_get_protocol_features(struct sk_buff *skb,
13019                                          struct genl_info *info)
13020 {
13021         void *hdr;
13022         struct sk_buff *msg;
13023
13024         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13025         if (!msg)
13026                 return -ENOMEM;
13027
13028         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13029                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13030         if (!hdr)
13031                 goto nla_put_failure;
13032
13033         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13034                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13035                 goto nla_put_failure;
13036
13037         genlmsg_end(msg, hdr);
13038         return genlmsg_reply(msg, info);
13039
13040  nla_put_failure:
13041         kfree_skb(msg);
13042         return -ENOBUFS;
13043 }
13044
13045 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13046 {
13047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13048         struct cfg80211_update_ft_ies_params ft_params;
13049         struct net_device *dev = info->user_ptr[1];
13050
13051         if (!rdev->ops->update_ft_ies)
13052                 return -EOPNOTSUPP;
13053
13054         if (!info->attrs[NL80211_ATTR_MDID] ||
13055             !info->attrs[NL80211_ATTR_IE])
13056                 return -EINVAL;
13057
13058         memset(&ft_params, 0, sizeof(ft_params));
13059         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13060         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13061         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13062
13063         return rdev_update_ft_ies(rdev, dev, &ft_params);
13064 }
13065
13066 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13067                                        struct genl_info *info)
13068 {
13069         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13070         struct wireless_dev *wdev = info->user_ptr[1];
13071         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13072         u16 duration;
13073         int ret;
13074
13075         if (!rdev->ops->crit_proto_start)
13076                 return -EOPNOTSUPP;
13077
13078         if (WARN_ON(!rdev->ops->crit_proto_stop))
13079                 return -EINVAL;
13080
13081         if (rdev->crit_proto_nlportid)
13082                 return -EBUSY;
13083
13084         /* determine protocol if provided */
13085         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13086                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13087
13088         if (proto >= NUM_NL80211_CRIT_PROTO)
13089                 return -EINVAL;
13090
13091         /* timeout must be provided */
13092         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13093                 return -EINVAL;
13094
13095         duration =
13096                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13097
13098         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13099                 return -ERANGE;
13100
13101         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13102         if (!ret)
13103                 rdev->crit_proto_nlportid = info->snd_portid;
13104
13105         return ret;
13106 }
13107
13108 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13109                                       struct genl_info *info)
13110 {
13111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13112         struct wireless_dev *wdev = info->user_ptr[1];
13113
13114         if (!rdev->ops->crit_proto_stop)
13115                 return -EOPNOTSUPP;
13116
13117         if (rdev->crit_proto_nlportid) {
13118                 rdev->crit_proto_nlportid = 0;
13119                 rdev_crit_proto_stop(rdev, wdev);
13120         }
13121         return 0;
13122 }
13123
13124 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13125                                        struct nlattr *attr,
13126                                        struct netlink_ext_ack *extack)
13127 {
13128         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13129                 if (attr->nla_type & NLA_F_NESTED) {
13130                         NL_SET_ERR_MSG_ATTR(extack, attr,
13131                                             "unexpected nested data");
13132                         return -EINVAL;
13133                 }
13134
13135                 return 0;
13136         }
13137
13138         if (!(attr->nla_type & NLA_F_NESTED)) {
13139                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13140                 return -EINVAL;
13141         }
13142
13143         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13144 }
13145
13146 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13147 {
13148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13149         struct wireless_dev *wdev =
13150                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13151         int i, err;
13152         u32 vid, subcmd;
13153
13154         if (!rdev->wiphy.vendor_commands)
13155                 return -EOPNOTSUPP;
13156
13157         if (IS_ERR(wdev)) {
13158                 err = PTR_ERR(wdev);
13159                 if (err != -EINVAL)
13160                         return err;
13161                 wdev = NULL;
13162         } else if (wdev->wiphy != &rdev->wiphy) {
13163                 return -EINVAL;
13164         }
13165
13166         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13167             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13168                 return -EINVAL;
13169
13170         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13171         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13172         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13173                 const struct wiphy_vendor_command *vcmd;
13174                 void *data = NULL;
13175                 int len = 0;
13176
13177                 vcmd = &rdev->wiphy.vendor_commands[i];
13178
13179                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13180                         continue;
13181
13182                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13183                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13184                         if (!wdev)
13185                                 return -EINVAL;
13186                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13187                             !wdev->netdev)
13188                                 return -EINVAL;
13189
13190                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13191                                 if (!wdev_running(wdev))
13192                                         return -ENETDOWN;
13193                         }
13194
13195                         if (!vcmd->doit)
13196                                 return -EOPNOTSUPP;
13197                 } else {
13198                         wdev = NULL;
13199                 }
13200
13201                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13202                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13203                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13204
13205                         err = nl80211_vendor_check_policy(vcmd,
13206                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13207                                         info->extack);
13208                         if (err)
13209                                 return err;
13210                 }
13211
13212                 rdev->cur_cmd_info = info;
13213                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13214                 rdev->cur_cmd_info = NULL;
13215                 return err;
13216         }
13217
13218         return -EOPNOTSUPP;
13219 }
13220
13221 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13222                                        struct netlink_callback *cb,
13223                                        struct cfg80211_registered_device **rdev,
13224                                        struct wireless_dev **wdev)
13225 {
13226         struct nlattr **attrbuf;
13227         u32 vid, subcmd;
13228         unsigned int i;
13229         int vcmd_idx = -1;
13230         int err;
13231         void *data = NULL;
13232         unsigned int data_len = 0;
13233
13234         if (cb->args[0]) {
13235                 /* subtract the 1 again here */
13236                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13237                 struct wireless_dev *tmp;
13238
13239                 if (!wiphy)
13240                         return -ENODEV;
13241                 *rdev = wiphy_to_rdev(wiphy);
13242                 *wdev = NULL;
13243
13244                 if (cb->args[1]) {
13245                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13246                                 if (tmp->identifier == cb->args[1] - 1) {
13247                                         *wdev = tmp;
13248                                         break;
13249                                 }
13250                         }
13251                 }
13252
13253                 /* keep rtnl locked in successful case */
13254                 return 0;
13255         }
13256
13257         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13258         if (!attrbuf)
13259                 return -ENOMEM;
13260
13261         err = nlmsg_parse_deprecated(cb->nlh,
13262                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13263                                      attrbuf, nl80211_fam.maxattr,
13264                                      nl80211_policy, NULL);
13265         if (err)
13266                 goto out;
13267
13268         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13269             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13270                 err = -EINVAL;
13271                 goto out;
13272         }
13273
13274         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13275         if (IS_ERR(*wdev))
13276                 *wdev = NULL;
13277
13278         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13279         if (IS_ERR(*rdev)) {
13280                 err = PTR_ERR(*rdev);
13281                 goto out;
13282         }
13283
13284         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13285         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13286
13287         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13288                 const struct wiphy_vendor_command *vcmd;
13289
13290                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13291
13292                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13293                         continue;
13294
13295                 if (!vcmd->dumpit) {
13296                         err = -EOPNOTSUPP;
13297                         goto out;
13298                 }
13299
13300                 vcmd_idx = i;
13301                 break;
13302         }
13303
13304         if (vcmd_idx < 0) {
13305                 err = -EOPNOTSUPP;
13306                 goto out;
13307         }
13308
13309         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13310                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13311                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13312
13313                 err = nl80211_vendor_check_policy(
13314                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13315                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13316                                 cb->extack);
13317                 if (err)
13318                         goto out;
13319         }
13320
13321         /* 0 is the first index - add 1 to parse only once */
13322         cb->args[0] = (*rdev)->wiphy_idx + 1;
13323         /* add 1 to know if it was NULL */
13324         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13325         cb->args[2] = vcmd_idx;
13326         cb->args[3] = (unsigned long)data;
13327         cb->args[4] = data_len;
13328
13329         /* keep rtnl locked in successful case */
13330         err = 0;
13331 out:
13332         kfree(attrbuf);
13333         return err;
13334 }
13335
13336 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13337                                    struct netlink_callback *cb)
13338 {
13339         struct cfg80211_registered_device *rdev;
13340         struct wireless_dev *wdev;
13341         unsigned int vcmd_idx;
13342         const struct wiphy_vendor_command *vcmd;
13343         void *data;
13344         int data_len;
13345         int err;
13346         struct nlattr *vendor_data;
13347
13348         rtnl_lock();
13349         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13350         if (err)
13351                 goto out;
13352
13353         vcmd_idx = cb->args[2];
13354         data = (void *)cb->args[3];
13355         data_len = cb->args[4];
13356         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13357
13358         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13359                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13360                 if (!wdev) {
13361                         err = -EINVAL;
13362                         goto out;
13363                 }
13364                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13365                     !wdev->netdev) {
13366                         err = -EINVAL;
13367                         goto out;
13368                 }
13369
13370                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13371                         if (!wdev_running(wdev)) {
13372                                 err = -ENETDOWN;
13373                                 goto out;
13374                         }
13375                 }
13376         }
13377
13378         while (1) {
13379                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13380                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13381                                            NL80211_CMD_VENDOR);
13382                 if (!hdr)
13383                         break;
13384
13385                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13386                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13387                                                wdev_id(wdev),
13388                                                NL80211_ATTR_PAD))) {
13389                         genlmsg_cancel(skb, hdr);
13390                         break;
13391                 }
13392
13393                 vendor_data = nla_nest_start_noflag(skb,
13394                                                     NL80211_ATTR_VENDOR_DATA);
13395                 if (!vendor_data) {
13396                         genlmsg_cancel(skb, hdr);
13397                         break;
13398                 }
13399
13400                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13401                                    (unsigned long *)&cb->args[5]);
13402                 nla_nest_end(skb, vendor_data);
13403
13404                 if (err == -ENOBUFS || err == -ENOENT) {
13405                         genlmsg_cancel(skb, hdr);
13406                         break;
13407                 } else if (err) {
13408                         genlmsg_cancel(skb, hdr);
13409                         goto out;
13410                 }
13411
13412                 genlmsg_end(skb, hdr);
13413         }
13414
13415         err = skb->len;
13416  out:
13417         rtnl_unlock();
13418         return err;
13419 }
13420
13421 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13422                                            enum nl80211_commands cmd,
13423                                            enum nl80211_attrs attr,
13424                                            int approxlen)
13425 {
13426         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13427
13428         if (WARN_ON(!rdev->cur_cmd_info))
13429                 return NULL;
13430
13431         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13432                                            rdev->cur_cmd_info->snd_portid,
13433                                            rdev->cur_cmd_info->snd_seq,
13434                                            cmd, attr, NULL, GFP_KERNEL);
13435 }
13436 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13437
13438 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13439 {
13440         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13441         void *hdr = ((void **)skb->cb)[1];
13442         struct nlattr *data = ((void **)skb->cb)[2];
13443
13444         /* clear CB data for netlink core to own from now on */
13445         memset(skb->cb, 0, sizeof(skb->cb));
13446
13447         if (WARN_ON(!rdev->cur_cmd_info)) {
13448                 kfree_skb(skb);
13449                 return -EINVAL;
13450         }
13451
13452         nla_nest_end(skb, data);
13453         genlmsg_end(skb, hdr);
13454         return genlmsg_reply(skb, rdev->cur_cmd_info);
13455 }
13456 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13457
13458 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13459 {
13460         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13461
13462         if (WARN_ON(!rdev->cur_cmd_info))
13463                 return 0;
13464
13465         return rdev->cur_cmd_info->snd_portid;
13466 }
13467 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13468
13469 static int nl80211_set_qos_map(struct sk_buff *skb,
13470                                struct genl_info *info)
13471 {
13472         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13473         struct cfg80211_qos_map *qos_map = NULL;
13474         struct net_device *dev = info->user_ptr[1];
13475         u8 *pos, len, num_des, des_len, des;
13476         int ret;
13477
13478         if (!rdev->ops->set_qos_map)
13479                 return -EOPNOTSUPP;
13480
13481         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13482                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13483                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13484
13485                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13486                     len > IEEE80211_QOS_MAP_LEN_MAX)
13487                         return -EINVAL;
13488
13489                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13490                 if (!qos_map)
13491                         return -ENOMEM;
13492
13493                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13494                 if (num_des) {
13495                         des_len = num_des *
13496                                 sizeof(struct cfg80211_dscp_exception);
13497                         memcpy(qos_map->dscp_exception, pos, des_len);
13498                         qos_map->num_des = num_des;
13499                         for (des = 0; des < num_des; des++) {
13500                                 if (qos_map->dscp_exception[des].up > 7) {
13501                                         kfree(qos_map);
13502                                         return -EINVAL;
13503                                 }
13504                         }
13505                         pos += des_len;
13506                 }
13507                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13508         }
13509
13510         wdev_lock(dev->ieee80211_ptr);
13511         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13512         if (!ret)
13513                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13514         wdev_unlock(dev->ieee80211_ptr);
13515
13516         kfree(qos_map);
13517         return ret;
13518 }
13519
13520 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13521 {
13522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13523         struct net_device *dev = info->user_ptr[1];
13524         struct wireless_dev *wdev = dev->ieee80211_ptr;
13525         const u8 *peer;
13526         u8 tsid, up;
13527         u16 admitted_time = 0;
13528         int err;
13529
13530         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13531                 return -EOPNOTSUPP;
13532
13533         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13534             !info->attrs[NL80211_ATTR_USER_PRIO])
13535                 return -EINVAL;
13536
13537         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13538         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13539
13540         /* WMM uses TIDs 0-7 even for TSPEC */
13541         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13542                 /* TODO: handle 802.11 TSPEC/admission control
13543                  * need more attributes for that (e.g. BA session requirement);
13544                  * change the WMM adminssion test above to allow both then
13545                  */
13546                 return -EINVAL;
13547         }
13548
13549         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13550
13551         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13552                 admitted_time =
13553                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13554                 if (!admitted_time)
13555                         return -EINVAL;
13556         }
13557
13558         wdev_lock(wdev);
13559         switch (wdev->iftype) {
13560         case NL80211_IFTYPE_STATION:
13561         case NL80211_IFTYPE_P2P_CLIENT:
13562                 if (wdev->current_bss)
13563                         break;
13564                 err = -ENOTCONN;
13565                 goto out;
13566         default:
13567                 err = -EOPNOTSUPP;
13568                 goto out;
13569         }
13570
13571         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13572
13573  out:
13574         wdev_unlock(wdev);
13575         return err;
13576 }
13577
13578 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13579 {
13580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13581         struct net_device *dev = info->user_ptr[1];
13582         struct wireless_dev *wdev = dev->ieee80211_ptr;
13583         const u8 *peer;
13584         u8 tsid;
13585         int err;
13586
13587         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13588                 return -EINVAL;
13589
13590         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13591         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13592
13593         wdev_lock(wdev);
13594         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13595         wdev_unlock(wdev);
13596
13597         return err;
13598 }
13599
13600 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13601                                        struct genl_info *info)
13602 {
13603         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13604         struct net_device *dev = info->user_ptr[1];
13605         struct wireless_dev *wdev = dev->ieee80211_ptr;
13606         struct cfg80211_chan_def chandef = {};
13607         const u8 *addr;
13608         u8 oper_class;
13609         int err;
13610
13611         if (!rdev->ops->tdls_channel_switch ||
13612             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13613                 return -EOPNOTSUPP;
13614
13615         switch (dev->ieee80211_ptr->iftype) {
13616         case NL80211_IFTYPE_STATION:
13617         case NL80211_IFTYPE_P2P_CLIENT:
13618                 break;
13619         default:
13620                 return -EOPNOTSUPP;
13621         }
13622
13623         if (!info->attrs[NL80211_ATTR_MAC] ||
13624             !info->attrs[NL80211_ATTR_OPER_CLASS])
13625                 return -EINVAL;
13626
13627         err = nl80211_parse_chandef(rdev, info, &chandef);
13628         if (err)
13629                 return err;
13630
13631         /*
13632          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13633          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13634          * specification is not defined for them.
13635          */
13636         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13637             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13638             chandef.width != NL80211_CHAN_WIDTH_20)
13639                 return -EINVAL;
13640
13641         /* we will be active on the TDLS link */
13642         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13643                                            wdev->iftype))
13644                 return -EINVAL;
13645
13646         /* don't allow switching to DFS channels */
13647         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13648                 return -EINVAL;
13649
13650         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13651         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13652
13653         wdev_lock(wdev);
13654         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13655         wdev_unlock(wdev);
13656
13657         return err;
13658 }
13659
13660 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13661                                               struct genl_info *info)
13662 {
13663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13664         struct net_device *dev = info->user_ptr[1];
13665         struct wireless_dev *wdev = dev->ieee80211_ptr;
13666         const u8 *addr;
13667
13668         if (!rdev->ops->tdls_channel_switch ||
13669             !rdev->ops->tdls_cancel_channel_switch ||
13670             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13671                 return -EOPNOTSUPP;
13672
13673         switch (dev->ieee80211_ptr->iftype) {
13674         case NL80211_IFTYPE_STATION:
13675         case NL80211_IFTYPE_P2P_CLIENT:
13676                 break;
13677         default:
13678                 return -EOPNOTSUPP;
13679         }
13680
13681         if (!info->attrs[NL80211_ATTR_MAC])
13682                 return -EINVAL;
13683
13684         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13685
13686         wdev_lock(wdev);
13687         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13688         wdev_unlock(wdev);
13689
13690         return 0;
13691 }
13692
13693 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13694                                             struct genl_info *info)
13695 {
13696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13697         struct net_device *dev = info->user_ptr[1];
13698         struct wireless_dev *wdev = dev->ieee80211_ptr;
13699         const struct nlattr *nla;
13700         bool enabled;
13701
13702         if (!rdev->ops->set_multicast_to_unicast)
13703                 return -EOPNOTSUPP;
13704
13705         if (wdev->iftype != NL80211_IFTYPE_AP &&
13706             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13707                 return -EOPNOTSUPP;
13708
13709         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13710         enabled = nla_get_flag(nla);
13711
13712         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13713 }
13714
13715 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13716 {
13717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13718         struct net_device *dev = info->user_ptr[1];
13719         struct wireless_dev *wdev = dev->ieee80211_ptr;
13720         struct cfg80211_pmk_conf pmk_conf = {};
13721         int ret;
13722
13723         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13724             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13725                 return -EOPNOTSUPP;
13726
13727         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13728                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13729                 return -EOPNOTSUPP;
13730
13731         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13732                 return -EINVAL;
13733
13734         wdev_lock(wdev);
13735         if (!wdev->current_bss) {
13736                 ret = -ENOTCONN;
13737                 goto out;
13738         }
13739
13740         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13741         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13742                 ret = -EINVAL;
13743                 goto out;
13744         }
13745
13746         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13747         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13748         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13749             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13750                 ret = -EINVAL;
13751                 goto out;
13752         }
13753
13754         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13755                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13756
13757                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13758                         ret = -EINVAL;
13759                         goto out;
13760                 }
13761
13762                 pmk_conf.pmk_r0_name =
13763                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13764         }
13765
13766         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13767 out:
13768         wdev_unlock(wdev);
13769         return ret;
13770 }
13771
13772 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13773 {
13774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13775         struct net_device *dev = info->user_ptr[1];
13776         struct wireless_dev *wdev = dev->ieee80211_ptr;
13777         const u8 *aa;
13778         int ret;
13779
13780         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13781             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13782                 return -EOPNOTSUPP;
13783
13784         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13785                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13786                 return -EOPNOTSUPP;
13787
13788         if (!info->attrs[NL80211_ATTR_MAC])
13789                 return -EINVAL;
13790
13791         wdev_lock(wdev);
13792         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13793         ret = rdev_del_pmk(rdev, dev, aa);
13794         wdev_unlock(wdev);
13795
13796         return ret;
13797 }
13798
13799 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13800 {
13801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13802         struct net_device *dev = info->user_ptr[1];
13803         struct cfg80211_external_auth_params params;
13804
13805         if (!rdev->ops->external_auth)
13806                 return -EOPNOTSUPP;
13807
13808         if (!info->attrs[NL80211_ATTR_SSID] &&
13809             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13810             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13811                 return -EINVAL;
13812
13813         if (!info->attrs[NL80211_ATTR_BSSID])
13814                 return -EINVAL;
13815
13816         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13817                 return -EINVAL;
13818
13819         memset(&params, 0, sizeof(params));
13820
13821         if (info->attrs[NL80211_ATTR_SSID]) {
13822                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13823                 if (params.ssid.ssid_len == 0 ||
13824                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13825                         return -EINVAL;
13826                 memcpy(params.ssid.ssid,
13827                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13828                        params.ssid.ssid_len);
13829         }
13830
13831         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13832                ETH_ALEN);
13833
13834         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13835
13836         if (info->attrs[NL80211_ATTR_PMKID])
13837                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13838
13839         return rdev_external_auth(rdev, dev, &params);
13840 }
13841
13842 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13843 {
13844         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13845         struct net_device *dev = info->user_ptr[1];
13846         struct wireless_dev *wdev = dev->ieee80211_ptr;
13847         const u8 *buf;
13848         size_t len;
13849         u8 *dest;
13850         u16 proto;
13851         bool noencrypt;
13852         int err;
13853
13854         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13855                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13856                 return -EOPNOTSUPP;
13857
13858         if (!rdev->ops->tx_control_port)
13859                 return -EOPNOTSUPP;
13860
13861         if (!info->attrs[NL80211_ATTR_FRAME] ||
13862             !info->attrs[NL80211_ATTR_MAC] ||
13863             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13864                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13865                 return -EINVAL;
13866         }
13867
13868         wdev_lock(wdev);
13869
13870         switch (wdev->iftype) {
13871         case NL80211_IFTYPE_AP:
13872         case NL80211_IFTYPE_P2P_GO:
13873         case NL80211_IFTYPE_MESH_POINT:
13874                 break;
13875         case NL80211_IFTYPE_ADHOC:
13876         case NL80211_IFTYPE_STATION:
13877         case NL80211_IFTYPE_P2P_CLIENT:
13878                 if (wdev->current_bss)
13879                         break;
13880                 err = -ENOTCONN;
13881                 goto out;
13882         default:
13883                 err = -EOPNOTSUPP;
13884                 goto out;
13885         }
13886
13887         wdev_unlock(wdev);
13888
13889         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13890         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13891         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13892         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13893         noencrypt =
13894                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13895
13896         return rdev_tx_control_port(rdev, dev, buf, len,
13897                                     dest, cpu_to_be16(proto), noencrypt);
13898
13899  out:
13900         wdev_unlock(wdev);
13901         return err;
13902 }
13903
13904 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13905                                            struct genl_info *info)
13906 {
13907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13908         struct net_device *dev = info->user_ptr[1];
13909         struct wireless_dev *wdev = dev->ieee80211_ptr;
13910         struct cfg80211_ftm_responder_stats ftm_stats = {};
13911         struct sk_buff *msg;
13912         void *hdr;
13913         struct nlattr *ftm_stats_attr;
13914         int err;
13915
13916         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13917                 return -EOPNOTSUPP;
13918
13919         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13920         if (err)
13921                 return err;
13922
13923         if (!ftm_stats.filled)
13924                 return -ENODATA;
13925
13926         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13927         if (!msg)
13928                 return -ENOMEM;
13929
13930         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13931                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13932         if (!hdr)
13933                 goto nla_put_failure;
13934
13935         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13936                 goto nla_put_failure;
13937
13938         ftm_stats_attr = nla_nest_start_noflag(msg,
13939                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13940         if (!ftm_stats_attr)
13941                 goto nla_put_failure;
13942
13943 #define SET_FTM(field, name, type)                                       \
13944         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13945             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13946                              ftm_stats.field))                           \
13947                 goto nla_put_failure; } while (0)
13948 #define SET_FTM_U64(field, name)                                         \
13949         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13950             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13951                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13952                 goto nla_put_failure; } while (0)
13953
13954         SET_FTM(success_num, SUCCESS_NUM, u32);
13955         SET_FTM(partial_num, PARTIAL_NUM, u32);
13956         SET_FTM(failed_num, FAILED_NUM, u32);
13957         SET_FTM(asap_num, ASAP_NUM, u32);
13958         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13959         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13960         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13961         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13962         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13963 #undef SET_FTM
13964
13965         nla_nest_end(msg, ftm_stats_attr);
13966
13967         genlmsg_end(msg, hdr);
13968         return genlmsg_reply(msg, info);
13969
13970 nla_put_failure:
13971         nlmsg_free(msg);
13972         return -ENOBUFS;
13973 }
13974
13975 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13976 {
13977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13978         struct cfg80211_update_owe_info owe_info;
13979         struct net_device *dev = info->user_ptr[1];
13980
13981         if (!rdev->ops->update_owe_info)
13982                 return -EOPNOTSUPP;
13983
13984         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13985             !info->attrs[NL80211_ATTR_MAC])
13986                 return -EINVAL;
13987
13988         memset(&owe_info, 0, sizeof(owe_info));
13989         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13990         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13991
13992         if (info->attrs[NL80211_ATTR_IE]) {
13993                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13994                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13995         }
13996
13997         return rdev_update_owe_info(rdev, dev, &owe_info);
13998 }
13999
14000 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14001 {
14002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14003         struct net_device *dev = info->user_ptr[1];
14004         struct wireless_dev *wdev = dev->ieee80211_ptr;
14005         struct station_info sinfo = {};
14006         const u8 *buf;
14007         size_t len;
14008         u8 *dest;
14009         int err;
14010
14011         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14012                 return -EOPNOTSUPP;
14013
14014         if (!info->attrs[NL80211_ATTR_MAC] ||
14015             !info->attrs[NL80211_ATTR_FRAME]) {
14016                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14017                 return -EINVAL;
14018         }
14019
14020         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14021                 return -EOPNOTSUPP;
14022
14023         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14024         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14025         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14026
14027         if (len < sizeof(struct ethhdr))
14028                 return -EINVAL;
14029
14030         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14031             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14032                 return -EINVAL;
14033
14034         err = rdev_get_station(rdev, dev, dest, &sinfo);
14035         if (err)
14036                 return err;
14037
14038         cfg80211_sinfo_release_content(&sinfo);
14039
14040         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14041 }
14042
14043 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14044                           struct nlattr *attrs[], struct net_device *dev,
14045                           struct cfg80211_tid_cfg *tid_conf,
14046                           struct genl_info *info, const u8 *peer)
14047 {
14048         struct netlink_ext_ack *extack = info->extack;
14049         u64 mask;
14050         int err;
14051
14052         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14053                 return -EINVAL;
14054
14055         tid_conf->config_override =
14056                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14057         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14058
14059         if (tid_conf->config_override) {
14060                 if (rdev->ops->reset_tid_config) {
14061                         err = rdev_reset_tid_config(rdev, dev, peer,
14062                                                     tid_conf->tids);
14063                         /* If peer is there no other configuration will be
14064                          * allowed
14065                          */
14066                         if (err || peer)
14067                                 return err;
14068                 } else {
14069                         return -EINVAL;
14070                 }
14071         }
14072
14073         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14074                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14075                 tid_conf->noack =
14076                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14077         }
14078
14079         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14080                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14081                 tid_conf->retry_short =
14082                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14083
14084                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14085                         return -EINVAL;
14086         }
14087
14088         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14089                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14090                 tid_conf->retry_long =
14091                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14092
14093                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14094                         return -EINVAL;
14095         }
14096
14097         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14098                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14099                 tid_conf->ampdu =
14100                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14101         }
14102
14103         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14104                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14105                 tid_conf->rtscts =
14106                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14107         }
14108
14109         if (peer)
14110                 mask = rdev->wiphy.tid_config_support.peer;
14111         else
14112                 mask = rdev->wiphy.tid_config_support.vif;
14113
14114         if (tid_conf->mask & ~mask) {
14115                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14116                 return -ENOTSUPP;
14117         }
14118
14119         return 0;
14120 }
14121
14122 static int nl80211_set_tid_config(struct sk_buff *skb,
14123                                   struct genl_info *info)
14124 {
14125         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14126         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14127         struct net_device *dev = info->user_ptr[1];
14128         struct cfg80211_tid_config *tid_config;
14129         struct nlattr *tid;
14130         int conf_idx = 0, rem_conf;
14131         int ret = -EINVAL;
14132         u32 num_conf = 0;
14133
14134         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14135                 return -EINVAL;
14136
14137         if (!rdev->ops->set_tid_config)
14138                 return -EOPNOTSUPP;
14139
14140         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14141                             rem_conf)
14142                 num_conf++;
14143
14144         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14145                              GFP_KERNEL);
14146         if (!tid_config)
14147                 return -ENOMEM;
14148
14149         tid_config->n_tid_conf = num_conf;
14150
14151         if (info->attrs[NL80211_ATTR_MAC])
14152                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14153
14154         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14155                             rem_conf) {
14156                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14157                                        tid, NULL, NULL);
14158
14159                 if (ret)
14160                         goto bad_tid_conf;
14161
14162                 ret = parse_tid_conf(rdev, attrs, dev,
14163                                      &tid_config->tid_conf[conf_idx],
14164                                      info, tid_config->peer);
14165                 if (ret)
14166                         goto bad_tid_conf;
14167
14168                 conf_idx++;
14169         }
14170
14171         ret = rdev_set_tid_config(rdev, dev, tid_config);
14172
14173 bad_tid_conf:
14174         kfree(tid_config);
14175         return ret;
14176 }
14177
14178 #define NL80211_FLAG_NEED_WIPHY         0x01
14179 #define NL80211_FLAG_NEED_NETDEV        0x02
14180 #define NL80211_FLAG_NEED_RTNL          0x04
14181 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14182 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14183                                          NL80211_FLAG_CHECK_NETDEV_UP)
14184 #define NL80211_FLAG_NEED_WDEV          0x10
14185 /* If a netdev is associated, it must be UP, P2P must be started */
14186 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14187                                          NL80211_FLAG_CHECK_NETDEV_UP)
14188 #define NL80211_FLAG_CLEAR_SKB          0x20
14189
14190 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14191                             struct genl_info *info)
14192 {
14193         struct cfg80211_registered_device *rdev;
14194         struct wireless_dev *wdev;
14195         struct net_device *dev;
14196         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14197
14198         if (rtnl)
14199                 rtnl_lock();
14200
14201         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14202                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14203                 if (IS_ERR(rdev)) {
14204                         if (rtnl)
14205                                 rtnl_unlock();
14206                         return PTR_ERR(rdev);
14207                 }
14208                 info->user_ptr[0] = rdev;
14209         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14210                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14211                 ASSERT_RTNL();
14212
14213                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14214                                                   info->attrs);
14215                 if (IS_ERR(wdev)) {
14216                         if (rtnl)
14217                                 rtnl_unlock();
14218                         return PTR_ERR(wdev);
14219                 }
14220
14221                 dev = wdev->netdev;
14222                 rdev = wiphy_to_rdev(wdev->wiphy);
14223
14224                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14225                         if (!dev) {
14226                                 if (rtnl)
14227                                         rtnl_unlock();
14228                                 return -EINVAL;
14229                         }
14230
14231                         info->user_ptr[1] = dev;
14232                 } else {
14233                         info->user_ptr[1] = wdev;
14234                 }
14235
14236                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14237                     !wdev_running(wdev)) {
14238                         if (rtnl)
14239                                 rtnl_unlock();
14240                         return -ENETDOWN;
14241                 }
14242
14243                 if (dev)
14244                         dev_hold(dev);
14245
14246                 info->user_ptr[0] = rdev;
14247         }
14248
14249         return 0;
14250 }
14251
14252 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14253                               struct genl_info *info)
14254 {
14255         if (info->user_ptr[1]) {
14256                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14257                         struct wireless_dev *wdev = info->user_ptr[1];
14258
14259                         if (wdev->netdev)
14260                                 dev_put(wdev->netdev);
14261                 } else {
14262                         dev_put(info->user_ptr[1]);
14263                 }
14264         }
14265
14266         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14267                 rtnl_unlock();
14268
14269         /* If needed, clear the netlink message payload from the SKB
14270          * as it might contain key data that shouldn't stick around on
14271          * the heap after the SKB is freed. The netlink message header
14272          * is still needed for further processing, so leave it intact.
14273          */
14274         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14275                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14276
14277                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14278         }
14279 }
14280
14281 static const struct genl_ops nl80211_ops[] = {
14282         {
14283                 .cmd = NL80211_CMD_GET_WIPHY,
14284                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14285                 .doit = nl80211_get_wiphy,
14286                 .dumpit = nl80211_dump_wiphy,
14287                 .done = nl80211_dump_wiphy_done,
14288                 /* can be retrieved by unprivileged users */
14289                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14290                                   NL80211_FLAG_NEED_RTNL,
14291         },
14292         {
14293                 .cmd = NL80211_CMD_SET_WIPHY,
14294                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14295                 .doit = nl80211_set_wiphy,
14296                 .flags = GENL_UNS_ADMIN_PERM,
14297                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14298         },
14299         {
14300                 .cmd = NL80211_CMD_GET_INTERFACE,
14301                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14302                 .doit = nl80211_get_interface,
14303                 .dumpit = nl80211_dump_interface,
14304                 /* can be retrieved by unprivileged users */
14305                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14306                                   NL80211_FLAG_NEED_RTNL,
14307         },
14308         {
14309                 .cmd = NL80211_CMD_SET_INTERFACE,
14310                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14311                 .doit = nl80211_set_interface,
14312                 .flags = GENL_UNS_ADMIN_PERM,
14313                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14314                                   NL80211_FLAG_NEED_RTNL,
14315         },
14316         {
14317                 .cmd = NL80211_CMD_NEW_INTERFACE,
14318                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14319                 .doit = nl80211_new_interface,
14320                 .flags = GENL_UNS_ADMIN_PERM,
14321                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14322                                   NL80211_FLAG_NEED_RTNL,
14323         },
14324         {
14325                 .cmd = NL80211_CMD_DEL_INTERFACE,
14326                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14327                 .doit = nl80211_del_interface,
14328                 .flags = GENL_UNS_ADMIN_PERM,
14329                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14330                                   NL80211_FLAG_NEED_RTNL,
14331         },
14332         {
14333                 .cmd = NL80211_CMD_GET_KEY,
14334                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14335                 .doit = nl80211_get_key,
14336                 .flags = GENL_UNS_ADMIN_PERM,
14337                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14338                                   NL80211_FLAG_NEED_RTNL,
14339         },
14340         {
14341                 .cmd = NL80211_CMD_SET_KEY,
14342                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14343                 .doit = nl80211_set_key,
14344                 .flags = GENL_UNS_ADMIN_PERM,
14345                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14346                                   NL80211_FLAG_NEED_RTNL |
14347                                   NL80211_FLAG_CLEAR_SKB,
14348         },
14349         {
14350                 .cmd = NL80211_CMD_NEW_KEY,
14351                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14352                 .doit = nl80211_new_key,
14353                 .flags = GENL_UNS_ADMIN_PERM,
14354                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14355                                   NL80211_FLAG_NEED_RTNL |
14356                                   NL80211_FLAG_CLEAR_SKB,
14357         },
14358         {
14359                 .cmd = NL80211_CMD_DEL_KEY,
14360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14361                 .doit = nl80211_del_key,
14362                 .flags = GENL_UNS_ADMIN_PERM,
14363                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14364                                   NL80211_FLAG_NEED_RTNL,
14365         },
14366         {
14367                 .cmd = NL80211_CMD_SET_BEACON,
14368                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14369                 .flags = GENL_UNS_ADMIN_PERM,
14370                 .doit = nl80211_set_beacon,
14371                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14372                                   NL80211_FLAG_NEED_RTNL,
14373         },
14374         {
14375                 .cmd = NL80211_CMD_START_AP,
14376                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14377                 .flags = GENL_UNS_ADMIN_PERM,
14378                 .doit = nl80211_start_ap,
14379                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14380                                   NL80211_FLAG_NEED_RTNL,
14381         },
14382         {
14383                 .cmd = NL80211_CMD_STOP_AP,
14384                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14385                 .flags = GENL_UNS_ADMIN_PERM,
14386                 .doit = nl80211_stop_ap,
14387                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14388                                   NL80211_FLAG_NEED_RTNL,
14389         },
14390         {
14391                 .cmd = NL80211_CMD_GET_STATION,
14392                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14393                 .doit = nl80211_get_station,
14394                 .dumpit = nl80211_dump_station,
14395                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14396                                   NL80211_FLAG_NEED_RTNL,
14397         },
14398         {
14399                 .cmd = NL80211_CMD_SET_STATION,
14400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14401                 .doit = nl80211_set_station,
14402                 .flags = GENL_UNS_ADMIN_PERM,
14403                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14404                                   NL80211_FLAG_NEED_RTNL,
14405         },
14406         {
14407                 .cmd = NL80211_CMD_NEW_STATION,
14408                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14409                 .doit = nl80211_new_station,
14410                 .flags = GENL_UNS_ADMIN_PERM,
14411                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14412                                   NL80211_FLAG_NEED_RTNL,
14413         },
14414         {
14415                 .cmd = NL80211_CMD_DEL_STATION,
14416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14417                 .doit = nl80211_del_station,
14418                 .flags = GENL_UNS_ADMIN_PERM,
14419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14420                                   NL80211_FLAG_NEED_RTNL,
14421         },
14422         {
14423                 .cmd = NL80211_CMD_GET_MPATH,
14424                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14425                 .doit = nl80211_get_mpath,
14426                 .dumpit = nl80211_dump_mpath,
14427                 .flags = GENL_UNS_ADMIN_PERM,
14428                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14429                                   NL80211_FLAG_NEED_RTNL,
14430         },
14431         {
14432                 .cmd = NL80211_CMD_GET_MPP,
14433                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14434                 .doit = nl80211_get_mpp,
14435                 .dumpit = nl80211_dump_mpp,
14436                 .flags = GENL_UNS_ADMIN_PERM,
14437                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14438                                   NL80211_FLAG_NEED_RTNL,
14439         },
14440         {
14441                 .cmd = NL80211_CMD_SET_MPATH,
14442                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14443                 .doit = nl80211_set_mpath,
14444                 .flags = GENL_UNS_ADMIN_PERM,
14445                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14446                                   NL80211_FLAG_NEED_RTNL,
14447         },
14448         {
14449                 .cmd = NL80211_CMD_NEW_MPATH,
14450                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14451                 .doit = nl80211_new_mpath,
14452                 .flags = GENL_UNS_ADMIN_PERM,
14453                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14454                                   NL80211_FLAG_NEED_RTNL,
14455         },
14456         {
14457                 .cmd = NL80211_CMD_DEL_MPATH,
14458                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14459                 .doit = nl80211_del_mpath,
14460                 .flags = GENL_UNS_ADMIN_PERM,
14461                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14462                                   NL80211_FLAG_NEED_RTNL,
14463         },
14464         {
14465                 .cmd = NL80211_CMD_SET_BSS,
14466                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14467                 .doit = nl80211_set_bss,
14468                 .flags = GENL_UNS_ADMIN_PERM,
14469                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14470                                   NL80211_FLAG_NEED_RTNL,
14471         },
14472         {
14473                 .cmd = NL80211_CMD_GET_REG,
14474                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14475                 .doit = nl80211_get_reg_do,
14476                 .dumpit = nl80211_get_reg_dump,
14477                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14478                 /* can be retrieved by unprivileged users */
14479         },
14480 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14481         {
14482                 .cmd = NL80211_CMD_SET_REG,
14483                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14484                 .doit = nl80211_set_reg,
14485                 .flags = GENL_ADMIN_PERM,
14486                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14487         },
14488 #endif
14489         {
14490                 .cmd = NL80211_CMD_REQ_SET_REG,
14491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14492                 .doit = nl80211_req_set_reg,
14493                 .flags = GENL_ADMIN_PERM,
14494         },
14495         {
14496                 .cmd = NL80211_CMD_RELOAD_REGDB,
14497                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14498                 .doit = nl80211_reload_regdb,
14499                 .flags = GENL_ADMIN_PERM,
14500         },
14501         {
14502                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14503                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14504                 .doit = nl80211_get_mesh_config,
14505                 /* can be retrieved by unprivileged users */
14506                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14507                                   NL80211_FLAG_NEED_RTNL,
14508         },
14509         {
14510                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14511                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14512                 .doit = nl80211_update_mesh_config,
14513                 .flags = GENL_UNS_ADMIN_PERM,
14514                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14515                                   NL80211_FLAG_NEED_RTNL,
14516         },
14517         {
14518                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14519                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14520                 .doit = nl80211_trigger_scan,
14521                 .flags = GENL_UNS_ADMIN_PERM,
14522                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14523                                   NL80211_FLAG_NEED_RTNL,
14524         },
14525         {
14526                 .cmd = NL80211_CMD_ABORT_SCAN,
14527                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14528                 .doit = nl80211_abort_scan,
14529                 .flags = GENL_UNS_ADMIN_PERM,
14530                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14531                                   NL80211_FLAG_NEED_RTNL,
14532         },
14533         {
14534                 .cmd = NL80211_CMD_GET_SCAN,
14535                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14536                 .dumpit = nl80211_dump_scan,
14537         },
14538         {
14539                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14540                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14541                 .doit = nl80211_start_sched_scan,
14542                 .flags = GENL_UNS_ADMIN_PERM,
14543                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14544                                   NL80211_FLAG_NEED_RTNL,
14545         },
14546         {
14547                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14548                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14549                 .doit = nl80211_stop_sched_scan,
14550                 .flags = GENL_UNS_ADMIN_PERM,
14551                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14552                                   NL80211_FLAG_NEED_RTNL,
14553         },
14554         {
14555                 .cmd = NL80211_CMD_AUTHENTICATE,
14556                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14557                 .doit = nl80211_authenticate,
14558                 .flags = GENL_UNS_ADMIN_PERM,
14559                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14560                                   NL80211_FLAG_NEED_RTNL |
14561                                   NL80211_FLAG_CLEAR_SKB,
14562         },
14563         {
14564                 .cmd = NL80211_CMD_ASSOCIATE,
14565                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14566                 .doit = nl80211_associate,
14567                 .flags = GENL_UNS_ADMIN_PERM,
14568                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14569                                   NL80211_FLAG_NEED_RTNL |
14570                                   NL80211_FLAG_CLEAR_SKB,
14571         },
14572         {
14573                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14574                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14575                 .doit = nl80211_deauthenticate,
14576                 .flags = GENL_UNS_ADMIN_PERM,
14577                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14578                                   NL80211_FLAG_NEED_RTNL,
14579         },
14580         {
14581                 .cmd = NL80211_CMD_DISASSOCIATE,
14582                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14583                 .doit = nl80211_disassociate,
14584                 .flags = GENL_UNS_ADMIN_PERM,
14585                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14586                                   NL80211_FLAG_NEED_RTNL,
14587         },
14588         {
14589                 .cmd = NL80211_CMD_JOIN_IBSS,
14590                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14591                 .doit = nl80211_join_ibss,
14592                 .flags = GENL_UNS_ADMIN_PERM,
14593                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14594                                   NL80211_FLAG_NEED_RTNL,
14595         },
14596         {
14597                 .cmd = NL80211_CMD_LEAVE_IBSS,
14598                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14599                 .doit = nl80211_leave_ibss,
14600                 .flags = GENL_UNS_ADMIN_PERM,
14601                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14602                                   NL80211_FLAG_NEED_RTNL,
14603         },
14604 #ifdef CONFIG_NL80211_TESTMODE
14605         {
14606                 .cmd = NL80211_CMD_TESTMODE,
14607                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14608                 .doit = nl80211_testmode_do,
14609                 .dumpit = nl80211_testmode_dump,
14610                 .flags = GENL_UNS_ADMIN_PERM,
14611                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14612                                   NL80211_FLAG_NEED_RTNL,
14613         },
14614 #endif
14615         {
14616                 .cmd = NL80211_CMD_CONNECT,
14617                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14618                 .doit = nl80211_connect,
14619                 .flags = GENL_UNS_ADMIN_PERM,
14620                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14621                                   NL80211_FLAG_NEED_RTNL |
14622                                   NL80211_FLAG_CLEAR_SKB,
14623         },
14624         {
14625                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14626                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14627                 .doit = nl80211_update_connect_params,
14628                 .flags = GENL_ADMIN_PERM,
14629                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14630                                   NL80211_FLAG_NEED_RTNL |
14631                                   NL80211_FLAG_CLEAR_SKB,
14632         },
14633         {
14634                 .cmd = NL80211_CMD_DISCONNECT,
14635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14636                 .doit = nl80211_disconnect,
14637                 .flags = GENL_UNS_ADMIN_PERM,
14638                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14639                                   NL80211_FLAG_NEED_RTNL,
14640         },
14641         {
14642                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14643                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14644                 .doit = nl80211_wiphy_netns,
14645                 .flags = GENL_UNS_ADMIN_PERM,
14646                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14647                                   NL80211_FLAG_NEED_RTNL,
14648         },
14649         {
14650                 .cmd = NL80211_CMD_GET_SURVEY,
14651                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14652                 .dumpit = nl80211_dump_survey,
14653         },
14654         {
14655                 .cmd = NL80211_CMD_SET_PMKSA,
14656                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14657                 .doit = nl80211_setdel_pmksa,
14658                 .flags = GENL_UNS_ADMIN_PERM,
14659                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14660                                   NL80211_FLAG_NEED_RTNL |
14661                                   NL80211_FLAG_CLEAR_SKB,
14662         },
14663         {
14664                 .cmd = NL80211_CMD_DEL_PMKSA,
14665                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14666                 .doit = nl80211_setdel_pmksa,
14667                 .flags = GENL_UNS_ADMIN_PERM,
14668                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14669                                   NL80211_FLAG_NEED_RTNL,
14670         },
14671         {
14672                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14674                 .doit = nl80211_flush_pmksa,
14675                 .flags = GENL_UNS_ADMIN_PERM,
14676                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14677                                   NL80211_FLAG_NEED_RTNL,
14678         },
14679         {
14680                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14681                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682                 .doit = nl80211_remain_on_channel,
14683                 .flags = GENL_UNS_ADMIN_PERM,
14684                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14685                                   NL80211_FLAG_NEED_RTNL,
14686         },
14687         {
14688                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14689                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14690                 .doit = nl80211_cancel_remain_on_channel,
14691                 .flags = GENL_UNS_ADMIN_PERM,
14692                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14693                                   NL80211_FLAG_NEED_RTNL,
14694         },
14695         {
14696                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14697                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14698                 .doit = nl80211_set_tx_bitrate_mask,
14699                 .flags = GENL_UNS_ADMIN_PERM,
14700                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14701                                   NL80211_FLAG_NEED_RTNL,
14702         },
14703         {
14704                 .cmd = NL80211_CMD_REGISTER_FRAME,
14705                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14706                 .doit = nl80211_register_mgmt,
14707                 .flags = GENL_UNS_ADMIN_PERM,
14708                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14709                                   NL80211_FLAG_NEED_RTNL,
14710         },
14711         {
14712                 .cmd = NL80211_CMD_FRAME,
14713                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14714                 .doit = nl80211_tx_mgmt,
14715                 .flags = GENL_UNS_ADMIN_PERM,
14716                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14717                                   NL80211_FLAG_NEED_RTNL,
14718         },
14719         {
14720                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14721                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14722                 .doit = nl80211_tx_mgmt_cancel_wait,
14723                 .flags = GENL_UNS_ADMIN_PERM,
14724                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14725                                   NL80211_FLAG_NEED_RTNL,
14726         },
14727         {
14728                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14729                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14730                 .doit = nl80211_set_power_save,
14731                 .flags = GENL_UNS_ADMIN_PERM,
14732                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14733                                   NL80211_FLAG_NEED_RTNL,
14734         },
14735         {
14736                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14737                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14738                 .doit = nl80211_get_power_save,
14739                 /* can be retrieved by unprivileged users */
14740                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14741                                   NL80211_FLAG_NEED_RTNL,
14742         },
14743         {
14744                 .cmd = NL80211_CMD_SET_CQM,
14745                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14746                 .doit = nl80211_set_cqm,
14747                 .flags = GENL_UNS_ADMIN_PERM,
14748                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14749                                   NL80211_FLAG_NEED_RTNL,
14750         },
14751         {
14752                 .cmd = NL80211_CMD_SET_CHANNEL,
14753                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14754                 .doit = nl80211_set_channel,
14755                 .flags = GENL_UNS_ADMIN_PERM,
14756                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14757                                   NL80211_FLAG_NEED_RTNL,
14758         },
14759         {
14760                 .cmd = NL80211_CMD_SET_WDS_PEER,
14761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14762                 .doit = nl80211_set_wds_peer,
14763                 .flags = GENL_UNS_ADMIN_PERM,
14764                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14765                                   NL80211_FLAG_NEED_RTNL,
14766         },
14767         {
14768                 .cmd = NL80211_CMD_JOIN_MESH,
14769                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14770                 .doit = nl80211_join_mesh,
14771                 .flags = GENL_UNS_ADMIN_PERM,
14772                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14773                                   NL80211_FLAG_NEED_RTNL,
14774         },
14775         {
14776                 .cmd = NL80211_CMD_LEAVE_MESH,
14777                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14778                 .doit = nl80211_leave_mesh,
14779                 .flags = GENL_UNS_ADMIN_PERM,
14780                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14781                                   NL80211_FLAG_NEED_RTNL,
14782         },
14783         {
14784                 .cmd = NL80211_CMD_JOIN_OCB,
14785                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14786                 .doit = nl80211_join_ocb,
14787                 .flags = GENL_UNS_ADMIN_PERM,
14788                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14789                                   NL80211_FLAG_NEED_RTNL,
14790         },
14791         {
14792                 .cmd = NL80211_CMD_LEAVE_OCB,
14793                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14794                 .doit = nl80211_leave_ocb,
14795                 .flags = GENL_UNS_ADMIN_PERM,
14796                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14797                                   NL80211_FLAG_NEED_RTNL,
14798         },
14799 #ifdef CONFIG_PM
14800         {
14801                 .cmd = NL80211_CMD_GET_WOWLAN,
14802                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14803                 .doit = nl80211_get_wowlan,
14804                 /* can be retrieved by unprivileged users */
14805                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14806                                   NL80211_FLAG_NEED_RTNL,
14807         },
14808         {
14809                 .cmd = NL80211_CMD_SET_WOWLAN,
14810                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14811                 .doit = nl80211_set_wowlan,
14812                 .flags = GENL_UNS_ADMIN_PERM,
14813                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14814                                   NL80211_FLAG_NEED_RTNL,
14815         },
14816 #endif
14817         {
14818                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14819                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14820                 .doit = nl80211_set_rekey_data,
14821                 .flags = GENL_UNS_ADMIN_PERM,
14822                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14823                                   NL80211_FLAG_NEED_RTNL |
14824                                   NL80211_FLAG_CLEAR_SKB,
14825         },
14826         {
14827                 .cmd = NL80211_CMD_TDLS_MGMT,
14828                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14829                 .doit = nl80211_tdls_mgmt,
14830                 .flags = GENL_UNS_ADMIN_PERM,
14831                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14832                                   NL80211_FLAG_NEED_RTNL,
14833         },
14834         {
14835                 .cmd = NL80211_CMD_TDLS_OPER,
14836                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14837                 .doit = nl80211_tdls_oper,
14838                 .flags = GENL_UNS_ADMIN_PERM,
14839                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14840                                   NL80211_FLAG_NEED_RTNL,
14841         },
14842         {
14843                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14844                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14845                 .doit = nl80211_register_unexpected_frame,
14846                 .flags = GENL_UNS_ADMIN_PERM,
14847                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14848                                   NL80211_FLAG_NEED_RTNL,
14849         },
14850         {
14851                 .cmd = NL80211_CMD_PROBE_CLIENT,
14852                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14853                 .doit = nl80211_probe_client,
14854                 .flags = GENL_UNS_ADMIN_PERM,
14855                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14856                                   NL80211_FLAG_NEED_RTNL,
14857         },
14858         {
14859                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14860                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14861                 .doit = nl80211_register_beacons,
14862                 .flags = GENL_UNS_ADMIN_PERM,
14863                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14864                                   NL80211_FLAG_NEED_RTNL,
14865         },
14866         {
14867                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14868                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14869                 .doit = nl80211_set_noack_map,
14870                 .flags = GENL_UNS_ADMIN_PERM,
14871                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14872                                   NL80211_FLAG_NEED_RTNL,
14873         },
14874         {
14875                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14876                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14877                 .doit = nl80211_start_p2p_device,
14878                 .flags = GENL_UNS_ADMIN_PERM,
14879                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14880                                   NL80211_FLAG_NEED_RTNL,
14881         },
14882         {
14883                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14884                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14885                 .doit = nl80211_stop_p2p_device,
14886                 .flags = GENL_UNS_ADMIN_PERM,
14887                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14888                                   NL80211_FLAG_NEED_RTNL,
14889         },
14890         {
14891                 .cmd = NL80211_CMD_START_NAN,
14892                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14893                 .doit = nl80211_start_nan,
14894                 .flags = GENL_ADMIN_PERM,
14895                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14896                                   NL80211_FLAG_NEED_RTNL,
14897         },
14898         {
14899                 .cmd = NL80211_CMD_STOP_NAN,
14900                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14901                 .doit = nl80211_stop_nan,
14902                 .flags = GENL_ADMIN_PERM,
14903                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14904                                   NL80211_FLAG_NEED_RTNL,
14905         },
14906         {
14907                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14908                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14909                 .doit = nl80211_nan_add_func,
14910                 .flags = GENL_ADMIN_PERM,
14911                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14912                                   NL80211_FLAG_NEED_RTNL,
14913         },
14914         {
14915                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14916                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14917                 .doit = nl80211_nan_del_func,
14918                 .flags = GENL_ADMIN_PERM,
14919                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14920                                   NL80211_FLAG_NEED_RTNL,
14921         },
14922         {
14923                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14924                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14925                 .doit = nl80211_nan_change_config,
14926                 .flags = GENL_ADMIN_PERM,
14927                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14928                                   NL80211_FLAG_NEED_RTNL,
14929         },
14930         {
14931                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14932                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14933                 .doit = nl80211_set_mcast_rate,
14934                 .flags = GENL_UNS_ADMIN_PERM,
14935                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14936                                   NL80211_FLAG_NEED_RTNL,
14937         },
14938         {
14939                 .cmd = NL80211_CMD_SET_MAC_ACL,
14940                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14941                 .doit = nl80211_set_mac_acl,
14942                 .flags = GENL_UNS_ADMIN_PERM,
14943                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14944                                   NL80211_FLAG_NEED_RTNL,
14945         },
14946         {
14947                 .cmd = NL80211_CMD_RADAR_DETECT,
14948                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14949                 .doit = nl80211_start_radar_detection,
14950                 .flags = GENL_UNS_ADMIN_PERM,
14951                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14952                                   NL80211_FLAG_NEED_RTNL,
14953         },
14954         {
14955                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14956                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14957                 .doit = nl80211_get_protocol_features,
14958         },
14959         {
14960                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14961                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14962                 .doit = nl80211_update_ft_ies,
14963                 .flags = GENL_UNS_ADMIN_PERM,
14964                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14965                                   NL80211_FLAG_NEED_RTNL,
14966         },
14967         {
14968                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14969                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14970                 .doit = nl80211_crit_protocol_start,
14971                 .flags = GENL_UNS_ADMIN_PERM,
14972                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14973                                   NL80211_FLAG_NEED_RTNL,
14974         },
14975         {
14976                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14977                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14978                 .doit = nl80211_crit_protocol_stop,
14979                 .flags = GENL_UNS_ADMIN_PERM,
14980                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14981                                   NL80211_FLAG_NEED_RTNL,
14982         },
14983         {
14984                 .cmd = NL80211_CMD_GET_COALESCE,
14985                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14986                 .doit = nl80211_get_coalesce,
14987                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14988                                   NL80211_FLAG_NEED_RTNL,
14989         },
14990         {
14991                 .cmd = NL80211_CMD_SET_COALESCE,
14992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993                 .doit = nl80211_set_coalesce,
14994                 .flags = GENL_UNS_ADMIN_PERM,
14995                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14996                                   NL80211_FLAG_NEED_RTNL,
14997         },
14998         {
14999                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001                 .doit = nl80211_channel_switch,
15002                 .flags = GENL_UNS_ADMIN_PERM,
15003                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15004                                   NL80211_FLAG_NEED_RTNL,
15005         },
15006         {
15007                 .cmd = NL80211_CMD_VENDOR,
15008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009                 .doit = nl80211_vendor_cmd,
15010                 .dumpit = nl80211_vendor_cmd_dump,
15011                 .flags = GENL_UNS_ADMIN_PERM,
15012                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15013                                   NL80211_FLAG_NEED_RTNL |
15014                                   NL80211_FLAG_CLEAR_SKB,
15015         },
15016         {
15017                 .cmd = NL80211_CMD_SET_QOS_MAP,
15018                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15019                 .doit = nl80211_set_qos_map,
15020                 .flags = GENL_UNS_ADMIN_PERM,
15021                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15022                                   NL80211_FLAG_NEED_RTNL,
15023         },
15024         {
15025                 .cmd = NL80211_CMD_ADD_TX_TS,
15026                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15027                 .doit = nl80211_add_tx_ts,
15028                 .flags = GENL_UNS_ADMIN_PERM,
15029                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15030                                   NL80211_FLAG_NEED_RTNL,
15031         },
15032         {
15033                 .cmd = NL80211_CMD_DEL_TX_TS,
15034                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15035                 .doit = nl80211_del_tx_ts,
15036                 .flags = GENL_UNS_ADMIN_PERM,
15037                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15038                                   NL80211_FLAG_NEED_RTNL,
15039         },
15040         {
15041                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15043                 .doit = nl80211_tdls_channel_switch,
15044                 .flags = GENL_UNS_ADMIN_PERM,
15045                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15046                                   NL80211_FLAG_NEED_RTNL,
15047         },
15048         {
15049                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15050                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15051                 .doit = nl80211_tdls_cancel_channel_switch,
15052                 .flags = GENL_UNS_ADMIN_PERM,
15053                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15054                                   NL80211_FLAG_NEED_RTNL,
15055         },
15056         {
15057                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15058                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15059                 .doit = nl80211_set_multicast_to_unicast,
15060                 .flags = GENL_UNS_ADMIN_PERM,
15061                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15062                                   NL80211_FLAG_NEED_RTNL,
15063         },
15064         {
15065                 .cmd = NL80211_CMD_SET_PMK,
15066                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15067                 .doit = nl80211_set_pmk,
15068                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15069                                   NL80211_FLAG_NEED_RTNL |
15070                                   NL80211_FLAG_CLEAR_SKB,
15071         },
15072         {
15073                 .cmd = NL80211_CMD_DEL_PMK,
15074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15075                 .doit = nl80211_del_pmk,
15076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15077                                   NL80211_FLAG_NEED_RTNL,
15078         },
15079         {
15080                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15082                 .doit = nl80211_external_auth,
15083                 .flags = GENL_ADMIN_PERM,
15084                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15085                                   NL80211_FLAG_NEED_RTNL,
15086         },
15087         {
15088                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15089                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15090                 .doit = nl80211_tx_control_port,
15091                 .flags = GENL_UNS_ADMIN_PERM,
15092                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15093                                   NL80211_FLAG_NEED_RTNL,
15094         },
15095         {
15096                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15097                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15098                 .doit = nl80211_get_ftm_responder_stats,
15099                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15100                                   NL80211_FLAG_NEED_RTNL,
15101         },
15102         {
15103                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15104                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15105                 .doit = nl80211_pmsr_start,
15106                 .flags = GENL_UNS_ADMIN_PERM,
15107                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15108                                   NL80211_FLAG_NEED_RTNL,
15109         },
15110         {
15111                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15113                 .doit = nl80211_notify_radar_detection,
15114                 .flags = GENL_UNS_ADMIN_PERM,
15115                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15116                                   NL80211_FLAG_NEED_RTNL,
15117         },
15118         {
15119                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15120                 .doit = nl80211_update_owe_info,
15121                 .flags = GENL_ADMIN_PERM,
15122                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15123                                   NL80211_FLAG_NEED_RTNL,
15124         },
15125         {
15126                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15127                 .doit = nl80211_probe_mesh_link,
15128                 .flags = GENL_UNS_ADMIN_PERM,
15129                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15130                                   NL80211_FLAG_NEED_RTNL,
15131         },
15132         {
15133                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15134                 .doit = nl80211_set_tid_config,
15135                 .flags = GENL_UNS_ADMIN_PERM,
15136                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15137                                   NL80211_FLAG_NEED_RTNL,
15138         },
15139 };
15140
15141 static struct genl_family nl80211_fam __ro_after_init = {
15142         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15143         .hdrsize = 0,                   /* no private header */
15144         .version = 1,                   /* no particular meaning now */
15145         .maxattr = NL80211_ATTR_MAX,
15146         .policy = nl80211_policy,
15147         .netnsok = true,
15148         .pre_doit = nl80211_pre_doit,
15149         .post_doit = nl80211_post_doit,
15150         .module = THIS_MODULE,
15151         .ops = nl80211_ops,
15152         .n_ops = ARRAY_SIZE(nl80211_ops),
15153         .mcgrps = nl80211_mcgrps,
15154         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15155         .parallel_ops = true,
15156 };
15157
15158 /* notification functions */
15159
15160 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15161                           enum nl80211_commands cmd)
15162 {
15163         struct sk_buff *msg;
15164         struct nl80211_dump_wiphy_state state = {};
15165
15166         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15167                 cmd != NL80211_CMD_DEL_WIPHY);
15168
15169         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15170         if (!msg)
15171                 return;
15172
15173         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15174                 nlmsg_free(msg);
15175                 return;
15176         }
15177
15178         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15179                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15180 }
15181
15182 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15183                                 struct wireless_dev *wdev,
15184                                 enum nl80211_commands cmd)
15185 {
15186         struct sk_buff *msg;
15187
15188         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15189         if (!msg)
15190                 return;
15191
15192         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15193                 nlmsg_free(msg);
15194                 return;
15195         }
15196
15197         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15198                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15199 }
15200
15201 static int nl80211_add_scan_req(struct sk_buff *msg,
15202                                 struct cfg80211_registered_device *rdev)
15203 {
15204         struct cfg80211_scan_request *req = rdev->scan_req;
15205         struct nlattr *nest;
15206         int i;
15207
15208         if (WARN_ON(!req))
15209                 return 0;
15210
15211         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15212         if (!nest)
15213                 goto nla_put_failure;
15214         for (i = 0; i < req->n_ssids; i++) {
15215                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15216                         goto nla_put_failure;
15217         }
15218         nla_nest_end(msg, nest);
15219
15220         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
15221         if (!nest)
15222                 goto nla_put_failure;
15223         for (i = 0; i < req->n_channels; i++) {
15224                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15225                         goto nla_put_failure;
15226         }
15227         nla_nest_end(msg, nest);
15228
15229         if (req->ie &&
15230             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15231                 goto nla_put_failure;
15232
15233         if (req->flags &&
15234             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15235                 goto nla_put_failure;
15236
15237         if (req->info.scan_start_tsf &&
15238             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15239                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15240              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15241                      req->info.tsf_bssid)))
15242                 goto nla_put_failure;
15243
15244         return 0;
15245  nla_put_failure:
15246         return -ENOBUFS;
15247 }
15248
15249 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15250                                  struct cfg80211_registered_device *rdev,
15251                                  struct wireless_dev *wdev,
15252                                  u32 portid, u32 seq, int flags,
15253                                  u32 cmd)
15254 {
15255         void *hdr;
15256
15257         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15258         if (!hdr)
15259                 return -1;
15260
15261         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15262             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15263                                          wdev->netdev->ifindex)) ||
15264             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15265                               NL80211_ATTR_PAD))
15266                 goto nla_put_failure;
15267
15268         /* ignore errors and send incomplete event anyway */
15269         nl80211_add_scan_req(msg, rdev);
15270
15271         genlmsg_end(msg, hdr);
15272         return 0;
15273
15274  nla_put_failure:
15275         genlmsg_cancel(msg, hdr);
15276         return -EMSGSIZE;
15277 }
15278
15279 static int
15280 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15281                             struct cfg80211_sched_scan_request *req, u32 cmd)
15282 {
15283         void *hdr;
15284
15285         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15286         if (!hdr)
15287                 return -1;
15288
15289         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15290                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15291             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15292             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15293                               NL80211_ATTR_PAD))
15294                 goto nla_put_failure;
15295
15296         genlmsg_end(msg, hdr);
15297         return 0;
15298
15299  nla_put_failure:
15300         genlmsg_cancel(msg, hdr);
15301         return -EMSGSIZE;
15302 }
15303
15304 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15305                              struct wireless_dev *wdev)
15306 {
15307         struct sk_buff *msg;
15308
15309         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15310         if (!msg)
15311                 return;
15312
15313         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15314                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15315                 nlmsg_free(msg);
15316                 return;
15317         }
15318
15319         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15320                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15321 }
15322
15323 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15324                                        struct wireless_dev *wdev, bool aborted)
15325 {
15326         struct sk_buff *msg;
15327
15328         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15329         if (!msg)
15330                 return NULL;
15331
15332         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15333                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15334                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15335                 nlmsg_free(msg);
15336                 return NULL;
15337         }
15338
15339         return msg;
15340 }
15341
15342 /* send message created by nl80211_build_scan_msg() */
15343 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15344                            struct sk_buff *msg)
15345 {
15346         if (!msg)
15347                 return;
15348
15349         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15350                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15351 }
15352
15353 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15354 {
15355         struct sk_buff *msg;
15356
15357         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15358         if (!msg)
15359                 return;
15360
15361         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15362                 nlmsg_free(msg);
15363                 return;
15364         }
15365
15366         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15367                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15368 }
15369
15370 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15371                                           struct regulatory_request *request)
15372 {
15373         /* Userspace can always count this one always being set */
15374         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15375                 goto nla_put_failure;
15376
15377         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15378                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15379                                NL80211_REGDOM_TYPE_WORLD))
15380                         goto nla_put_failure;
15381         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15382                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15383                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15384                         goto nla_put_failure;
15385         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15386                    request->intersect) {
15387                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15388                                NL80211_REGDOM_TYPE_INTERSECTION))
15389                         goto nla_put_failure;
15390         } else {
15391                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15392                                NL80211_REGDOM_TYPE_COUNTRY) ||
15393                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15394                                    request->alpha2))
15395                         goto nla_put_failure;
15396         }
15397
15398         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15399                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15400
15401                 if (wiphy &&
15402                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15403                         goto nla_put_failure;
15404
15405                 if (wiphy &&
15406                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15407                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15408                         goto nla_put_failure;
15409         }
15410
15411         return true;
15412
15413 nla_put_failure:
15414         return false;
15415 }
15416
15417 /*
15418  * This can happen on global regulatory changes or device specific settings
15419  * based on custom regulatory domains.
15420  */
15421 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15422                                      struct regulatory_request *request)
15423 {
15424         struct sk_buff *msg;
15425         void *hdr;
15426
15427         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15428         if (!msg)
15429                 return;
15430
15431         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15432         if (!hdr)
15433                 goto nla_put_failure;
15434
15435         if (!nl80211_reg_change_event_fill(msg, request))
15436                 goto nla_put_failure;
15437
15438         genlmsg_end(msg, hdr);
15439
15440         rcu_read_lock();
15441         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15442                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15443         rcu_read_unlock();
15444
15445         return;
15446
15447 nla_put_failure:
15448         nlmsg_free(msg);
15449 }
15450
15451 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15452                                     struct net_device *netdev,
15453                                     const u8 *buf, size_t len,
15454                                     enum nl80211_commands cmd, gfp_t gfp,
15455                                     int uapsd_queues, const u8 *req_ies,
15456                                     size_t req_ies_len)
15457 {
15458         struct sk_buff *msg;
15459         void *hdr;
15460
15461         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15462         if (!msg)
15463                 return;
15464
15465         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15466         if (!hdr) {
15467                 nlmsg_free(msg);
15468                 return;
15469         }
15470
15471         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15472             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15473             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15474             (req_ies &&
15475              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15476                 goto nla_put_failure;
15477
15478         if (uapsd_queues >= 0) {
15479                 struct nlattr *nla_wmm =
15480                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15481                 if (!nla_wmm)
15482                         goto nla_put_failure;
15483
15484                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15485                                uapsd_queues))
15486                         goto nla_put_failure;
15487
15488                 nla_nest_end(msg, nla_wmm);
15489         }
15490
15491         genlmsg_end(msg, hdr);
15492
15493         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15494                                 NL80211_MCGRP_MLME, gfp);
15495         return;
15496
15497  nla_put_failure:
15498         nlmsg_free(msg);
15499 }
15500
15501 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15502                           struct net_device *netdev, const u8 *buf,
15503                           size_t len, gfp_t gfp)
15504 {
15505         nl80211_send_mlme_event(rdev, netdev, buf, len,
15506                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15507 }
15508
15509 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15510                            struct net_device *netdev, const u8 *buf,
15511                            size_t len, gfp_t gfp, int uapsd_queues,
15512                            const u8 *req_ies, size_t req_ies_len)
15513 {
15514         nl80211_send_mlme_event(rdev, netdev, buf, len,
15515                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15516                                 req_ies, req_ies_len);
15517 }
15518
15519 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15520                          struct net_device *netdev, const u8 *buf,
15521                          size_t len, gfp_t gfp)
15522 {
15523         nl80211_send_mlme_event(rdev, netdev, buf, len,
15524                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15525 }
15526
15527 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15528                            struct net_device *netdev, const u8 *buf,
15529                            size_t len, gfp_t gfp)
15530 {
15531         nl80211_send_mlme_event(rdev, netdev, buf, len,
15532                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15533 }
15534
15535 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15536                                   size_t len)
15537 {
15538         struct wireless_dev *wdev = dev->ieee80211_ptr;
15539         struct wiphy *wiphy = wdev->wiphy;
15540         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15541         const struct ieee80211_mgmt *mgmt = (void *)buf;
15542         u32 cmd;
15543
15544         if (WARN_ON(len < 2))
15545                 return;
15546
15547         if (ieee80211_is_deauth(mgmt->frame_control))
15548                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15549         else
15550                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15551
15552         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15553         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15554                                 NULL, 0);
15555 }
15556 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15557
15558 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15559                                       struct net_device *netdev, int cmd,
15560                                       const u8 *addr, gfp_t gfp)
15561 {
15562         struct sk_buff *msg;
15563         void *hdr;
15564
15565         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15566         if (!msg)
15567                 return;
15568
15569         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15570         if (!hdr) {
15571                 nlmsg_free(msg);
15572                 return;
15573         }
15574
15575         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15576             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15577             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15578             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15579                 goto nla_put_failure;
15580
15581         genlmsg_end(msg, hdr);
15582
15583         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15584                                 NL80211_MCGRP_MLME, gfp);
15585         return;
15586
15587  nla_put_failure:
15588         nlmsg_free(msg);
15589 }
15590
15591 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15592                                struct net_device *netdev, const u8 *addr,
15593                                gfp_t gfp)
15594 {
15595         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15596                                   addr, gfp);
15597 }
15598
15599 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15600                                 struct net_device *netdev, const u8 *addr,
15601                                 gfp_t gfp)
15602 {
15603         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15604                                   addr, gfp);
15605 }
15606
15607 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15608                                  struct net_device *netdev,
15609                                  struct cfg80211_connect_resp_params *cr,
15610                                  gfp_t gfp)
15611 {
15612         struct sk_buff *msg;
15613         void *hdr;
15614
15615         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15616                         cr->fils.kek_len + cr->fils.pmk_len +
15617                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15618         if (!msg)
15619                 return;
15620
15621         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15622         if (!hdr) {
15623                 nlmsg_free(msg);
15624                 return;
15625         }
15626
15627         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15628             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15629             (cr->bssid &&
15630              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15631             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15632                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15633                         cr->status) ||
15634             (cr->status < 0 &&
15635              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15636               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15637                           cr->timeout_reason))) ||
15638             (cr->req_ie &&
15639              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15640             (cr->resp_ie &&
15641              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15642                      cr->resp_ie)) ||
15643             (cr->fils.update_erp_next_seq_num &&
15644              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15645                          cr->fils.erp_next_seq_num)) ||
15646             (cr->status == WLAN_STATUS_SUCCESS &&
15647              ((cr->fils.kek &&
15648                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15649                        cr->fils.kek)) ||
15650               (cr->fils.pmk &&
15651                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15652               (cr->fils.pmkid &&
15653                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15654                 goto nla_put_failure;
15655
15656         genlmsg_end(msg, hdr);
15657
15658         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15659                                 NL80211_MCGRP_MLME, gfp);
15660         return;
15661
15662  nla_put_failure:
15663         nlmsg_free(msg);
15664 }
15665
15666 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15667                          struct net_device *netdev,
15668                          struct cfg80211_roam_info *info, gfp_t gfp)
15669 {
15670         struct sk_buff *msg;
15671         void *hdr;
15672         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15673
15674         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15675                         info->fils.kek_len + info->fils.pmk_len +
15676                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15677         if (!msg)
15678                 return;
15679
15680         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15681         if (!hdr) {
15682                 nlmsg_free(msg);
15683                 return;
15684         }
15685
15686         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15687             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15688             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15689             (info->req_ie &&
15690              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15691                      info->req_ie)) ||
15692             (info->resp_ie &&
15693              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15694                      info->resp_ie)) ||
15695             (info->fils.update_erp_next_seq_num &&
15696              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15697                          info->fils.erp_next_seq_num)) ||
15698             (info->fils.kek &&
15699              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15700                      info->fils.kek)) ||
15701             (info->fils.pmk &&
15702              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15703             (info->fils.pmkid &&
15704              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15705                 goto nla_put_failure;
15706
15707         genlmsg_end(msg, hdr);
15708
15709         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15710                                 NL80211_MCGRP_MLME, gfp);
15711         return;
15712
15713  nla_put_failure:
15714         nlmsg_free(msg);
15715 }
15716
15717 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15718                                   struct net_device *netdev, const u8 *bssid)
15719 {
15720         struct sk_buff *msg;
15721         void *hdr;
15722
15723         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15724         if (!msg)
15725                 return;
15726
15727         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15728         if (!hdr) {
15729                 nlmsg_free(msg);
15730                 return;
15731         }
15732
15733         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15734             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15735             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15736                 goto nla_put_failure;
15737
15738         genlmsg_end(msg, hdr);
15739
15740         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15741                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15742         return;
15743
15744  nla_put_failure:
15745         nlmsg_free(msg);
15746 }
15747
15748 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15749                                struct net_device *netdev, u16 reason,
15750                                const u8 *ie, size_t ie_len, bool from_ap)
15751 {
15752         struct sk_buff *msg;
15753         void *hdr;
15754
15755         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15756         if (!msg)
15757                 return;
15758
15759         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15760         if (!hdr) {
15761                 nlmsg_free(msg);
15762                 return;
15763         }
15764
15765         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15766             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15767             (reason &&
15768              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15769             (from_ap &&
15770              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15771             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15772                 goto nla_put_failure;
15773
15774         genlmsg_end(msg, hdr);
15775
15776         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15777                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15778         return;
15779
15780  nla_put_failure:
15781         nlmsg_free(msg);
15782 }
15783
15784 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15785                              struct net_device *netdev, const u8 *bssid,
15786                              gfp_t gfp)
15787 {
15788         struct sk_buff *msg;
15789         void *hdr;
15790
15791         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15792         if (!msg)
15793                 return;
15794
15795         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15796         if (!hdr) {
15797                 nlmsg_free(msg);
15798                 return;
15799         }
15800
15801         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15802             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15803             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15804                 goto nla_put_failure;
15805
15806         genlmsg_end(msg, hdr);
15807
15808         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15809                                 NL80211_MCGRP_MLME, gfp);
15810         return;
15811
15812  nla_put_failure:
15813         nlmsg_free(msg);
15814 }
15815
15816 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15817                                         const u8 *ie, u8 ie_len,
15818                                         int sig_dbm, gfp_t gfp)
15819 {
15820         struct wireless_dev *wdev = dev->ieee80211_ptr;
15821         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15822         struct sk_buff *msg;
15823         void *hdr;
15824
15825         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15826                 return;
15827
15828         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15829
15830         msg = nlmsg_new(100 + ie_len, gfp);
15831         if (!msg)
15832                 return;
15833
15834         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15835         if (!hdr) {
15836                 nlmsg_free(msg);
15837                 return;
15838         }
15839
15840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15841             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15842             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15843             (ie_len && ie &&
15844              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15845             (sig_dbm &&
15846              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15847                 goto nla_put_failure;
15848
15849         genlmsg_end(msg, hdr);
15850
15851         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15852                                 NL80211_MCGRP_MLME, gfp);
15853         return;
15854
15855  nla_put_failure:
15856         nlmsg_free(msg);
15857 }
15858 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15859
15860 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15861                                  struct net_device *netdev, const u8 *addr,
15862                                  enum nl80211_key_type key_type, int key_id,
15863                                  const u8 *tsc, gfp_t gfp)
15864 {
15865         struct sk_buff *msg;
15866         void *hdr;
15867
15868         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15869         if (!msg)
15870                 return;
15871
15872         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15873         if (!hdr) {
15874                 nlmsg_free(msg);
15875                 return;
15876         }
15877
15878         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15879             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15880             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15881             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15882             (key_id != -1 &&
15883              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15884             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15885                 goto nla_put_failure;
15886
15887         genlmsg_end(msg, hdr);
15888
15889         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15890                                 NL80211_MCGRP_MLME, gfp);
15891         return;
15892
15893  nla_put_failure:
15894         nlmsg_free(msg);
15895 }
15896
15897 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15898                                     struct ieee80211_channel *channel_before,
15899                                     struct ieee80211_channel *channel_after)
15900 {
15901         struct sk_buff *msg;
15902         void *hdr;
15903         struct nlattr *nl_freq;
15904
15905         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15906         if (!msg)
15907                 return;
15908
15909         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15910         if (!hdr) {
15911                 nlmsg_free(msg);
15912                 return;
15913         }
15914
15915         /*
15916          * Since we are applying the beacon hint to a wiphy we know its
15917          * wiphy_idx is valid
15918          */
15919         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15920                 goto nla_put_failure;
15921
15922         /* Before */
15923         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15924         if (!nl_freq)
15925                 goto nla_put_failure;
15926
15927         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15928                 goto nla_put_failure;
15929         nla_nest_end(msg, nl_freq);
15930
15931         /* After */
15932         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15933         if (!nl_freq)
15934                 goto nla_put_failure;
15935
15936         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15937                 goto nla_put_failure;
15938         nla_nest_end(msg, nl_freq);
15939
15940         genlmsg_end(msg, hdr);
15941
15942         rcu_read_lock();
15943         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15944                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15945         rcu_read_unlock();
15946
15947         return;
15948
15949 nla_put_failure:
15950         nlmsg_free(msg);
15951 }
15952
15953 static void nl80211_send_remain_on_chan_event(
15954         int cmd, struct cfg80211_registered_device *rdev,
15955         struct wireless_dev *wdev, u64 cookie,
15956         struct ieee80211_channel *chan,
15957         unsigned int duration, gfp_t gfp)
15958 {
15959         struct sk_buff *msg;
15960         void *hdr;
15961
15962         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15963         if (!msg)
15964                 return;
15965
15966         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15967         if (!hdr) {
15968                 nlmsg_free(msg);
15969                 return;
15970         }
15971
15972         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15973             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15974                                          wdev->netdev->ifindex)) ||
15975             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15976                               NL80211_ATTR_PAD) ||
15977             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15978             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15979                         NL80211_CHAN_NO_HT) ||
15980             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15981                               NL80211_ATTR_PAD))
15982                 goto nla_put_failure;
15983
15984         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15985             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15986                 goto nla_put_failure;
15987
15988         genlmsg_end(msg, hdr);
15989
15990         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15991                                 NL80211_MCGRP_MLME, gfp);
15992         return;
15993
15994  nla_put_failure:
15995         nlmsg_free(msg);
15996 }
15997
15998 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15999                                struct ieee80211_channel *chan,
16000                                unsigned int duration, gfp_t gfp)
16001 {
16002         struct wiphy *wiphy = wdev->wiphy;
16003         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16004
16005         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16006         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16007                                           rdev, wdev, cookie, chan,
16008                                           duration, gfp);
16009 }
16010 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16011
16012 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16013                                         struct ieee80211_channel *chan,
16014                                         gfp_t gfp)
16015 {
16016         struct wiphy *wiphy = wdev->wiphy;
16017         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16018
16019         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16020         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16021                                           rdev, wdev, cookie, chan, 0, gfp);
16022 }
16023 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16024
16025 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16026                                         struct ieee80211_channel *chan,
16027                                         gfp_t gfp)
16028 {
16029         struct wiphy *wiphy = wdev->wiphy;
16030         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16031
16032         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16033         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16034                                           rdev, wdev, cookie, chan, 0, gfp);
16035 }
16036 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16037
16038 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16039                       struct station_info *sinfo, gfp_t gfp)
16040 {
16041         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16042         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16043         struct sk_buff *msg;
16044
16045         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16046
16047         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16048         if (!msg)
16049                 return;
16050
16051         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16052                                  rdev, dev, mac_addr, sinfo) < 0) {
16053                 nlmsg_free(msg);
16054                 return;
16055         }
16056
16057         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16058                                 NL80211_MCGRP_MLME, gfp);
16059 }
16060 EXPORT_SYMBOL(cfg80211_new_sta);
16061
16062 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16063                             struct station_info *sinfo, gfp_t gfp)
16064 {
16065         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16066         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16067         struct sk_buff *msg;
16068         struct station_info empty_sinfo = {};
16069
16070         if (!sinfo)
16071                 sinfo = &empty_sinfo;
16072
16073         trace_cfg80211_del_sta(dev, mac_addr);
16074
16075         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16076         if (!msg) {
16077                 cfg80211_sinfo_release_content(sinfo);
16078                 return;
16079         }
16080
16081         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16082                                  rdev, dev, mac_addr, sinfo) < 0) {
16083                 nlmsg_free(msg);
16084                 return;
16085         }
16086
16087         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16088                                 NL80211_MCGRP_MLME, gfp);
16089 }
16090 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16091
16092 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16093                           enum nl80211_connect_failed_reason reason,
16094                           gfp_t gfp)
16095 {
16096         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16097         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16098         struct sk_buff *msg;
16099         void *hdr;
16100
16101         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16102         if (!msg)
16103                 return;
16104
16105         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16106         if (!hdr) {
16107                 nlmsg_free(msg);
16108                 return;
16109         }
16110
16111         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16112             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16113             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16114                 goto nla_put_failure;
16115
16116         genlmsg_end(msg, hdr);
16117
16118         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16119                                 NL80211_MCGRP_MLME, gfp);
16120         return;
16121
16122  nla_put_failure:
16123         nlmsg_free(msg);
16124 }
16125 EXPORT_SYMBOL(cfg80211_conn_failed);
16126
16127 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16128                                        const u8 *addr, gfp_t gfp)
16129 {
16130         struct wireless_dev *wdev = dev->ieee80211_ptr;
16131         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16132         struct sk_buff *msg;
16133         void *hdr;
16134         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16135
16136         if (!nlportid)
16137                 return false;
16138
16139         msg = nlmsg_new(100, gfp);
16140         if (!msg)
16141                 return true;
16142
16143         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16144         if (!hdr) {
16145                 nlmsg_free(msg);
16146                 return true;
16147         }
16148
16149         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16150             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16151             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16152                 goto nla_put_failure;
16153
16154         genlmsg_end(msg, hdr);
16155         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16156         return true;
16157
16158  nla_put_failure:
16159         nlmsg_free(msg);
16160         return true;
16161 }
16162
16163 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16164                                 const u8 *addr, gfp_t gfp)
16165 {
16166         struct wireless_dev *wdev = dev->ieee80211_ptr;
16167         bool ret;
16168
16169         trace_cfg80211_rx_spurious_frame(dev, addr);
16170
16171         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16172                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16173                 trace_cfg80211_return_bool(false);
16174                 return false;
16175         }
16176         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16177                                          addr, gfp);
16178         trace_cfg80211_return_bool(ret);
16179         return ret;
16180 }
16181 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16182
16183 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16184                                         const u8 *addr, gfp_t gfp)
16185 {
16186         struct wireless_dev *wdev = dev->ieee80211_ptr;
16187         bool ret;
16188
16189         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16190
16191         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16192                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16193                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16194                 trace_cfg80211_return_bool(false);
16195                 return false;
16196         }
16197         ret = __nl80211_unexpected_frame(dev,
16198                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16199                                          addr, gfp);
16200         trace_cfg80211_return_bool(ret);
16201         return ret;
16202 }
16203 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16204
16205 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16206                       struct wireless_dev *wdev, u32 nlportid,
16207                       int freq, int sig_dbm,
16208                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16209 {
16210         struct net_device *netdev = wdev->netdev;
16211         struct sk_buff *msg;
16212         void *hdr;
16213
16214         msg = nlmsg_new(100 + len, gfp);
16215         if (!msg)
16216                 return -ENOMEM;
16217
16218         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16219         if (!hdr) {
16220                 nlmsg_free(msg);
16221                 return -ENOMEM;
16222         }
16223
16224         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16225             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16226                                         netdev->ifindex)) ||
16227             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16228                               NL80211_ATTR_PAD) ||
16229             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
16230             (sig_dbm &&
16231              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16232             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16233             (flags &&
16234              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16235                 goto nla_put_failure;
16236
16237         genlmsg_end(msg, hdr);
16238
16239         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16240
16241  nla_put_failure:
16242         nlmsg_free(msg);
16243         return -ENOBUFS;
16244 }
16245
16246 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16247                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16248 {
16249         struct wiphy *wiphy = wdev->wiphy;
16250         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16251         struct net_device *netdev = wdev->netdev;
16252         struct sk_buff *msg;
16253         void *hdr;
16254
16255         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16256
16257         msg = nlmsg_new(100 + len, gfp);
16258         if (!msg)
16259                 return;
16260
16261         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
16262         if (!hdr) {
16263                 nlmsg_free(msg);
16264                 return;
16265         }
16266
16267         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16268             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16269                                    netdev->ifindex)) ||
16270             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16271                               NL80211_ATTR_PAD) ||
16272             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16273             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16274                               NL80211_ATTR_PAD) ||
16275             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16276                 goto nla_put_failure;
16277
16278         genlmsg_end(msg, hdr);
16279
16280         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16281                                 NL80211_MCGRP_MLME, gfp);
16282         return;
16283
16284  nla_put_failure:
16285         nlmsg_free(msg);
16286 }
16287 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16288
16289 static int __nl80211_rx_control_port(struct net_device *dev,
16290                                      struct sk_buff *skb,
16291                                      bool unencrypted, gfp_t gfp)
16292 {
16293         struct wireless_dev *wdev = dev->ieee80211_ptr;
16294         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16295         struct ethhdr *ehdr = eth_hdr(skb);
16296         const u8 *addr = ehdr->h_source;
16297         u16 proto = be16_to_cpu(skb->protocol);
16298         struct sk_buff *msg;
16299         void *hdr;
16300         struct nlattr *frame;
16301
16302         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16303
16304         if (!nlportid)
16305                 return -ENOENT;
16306
16307         msg = nlmsg_new(100 + skb->len, gfp);
16308         if (!msg)
16309                 return -ENOMEM;
16310
16311         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16312         if (!hdr) {
16313                 nlmsg_free(msg);
16314                 return -ENOBUFS;
16315         }
16316
16317         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16318             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16319             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16320                               NL80211_ATTR_PAD) ||
16321             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16322             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16323             (unencrypted && nla_put_flag(msg,
16324                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16325                 goto nla_put_failure;
16326
16327         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16328         if (!frame)
16329                 goto nla_put_failure;
16330
16331         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16332         genlmsg_end(msg, hdr);
16333
16334         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16335
16336  nla_put_failure:
16337         nlmsg_free(msg);
16338         return -ENOBUFS;
16339 }
16340
16341 bool cfg80211_rx_control_port(struct net_device *dev,
16342                               struct sk_buff *skb, bool unencrypted)
16343 {
16344         int ret;
16345
16346         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16347         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16348         trace_cfg80211_return_bool(ret == 0);
16349         return ret == 0;
16350 }
16351 EXPORT_SYMBOL(cfg80211_rx_control_port);
16352
16353 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16354                                             const char *mac, gfp_t gfp)
16355 {
16356         struct wireless_dev *wdev = dev->ieee80211_ptr;
16357         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16358         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16359         void **cb;
16360
16361         if (!msg)
16362                 return NULL;
16363
16364         cb = (void **)msg->cb;
16365
16366         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16367         if (!cb[0]) {
16368                 nlmsg_free(msg);
16369                 return NULL;
16370         }
16371
16372         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16373             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16374                 goto nla_put_failure;
16375
16376         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16377                 goto nla_put_failure;
16378
16379         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16380         if (!cb[1])
16381                 goto nla_put_failure;
16382
16383         cb[2] = rdev;
16384
16385         return msg;
16386  nla_put_failure:
16387         nlmsg_free(msg);
16388         return NULL;
16389 }
16390
16391 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16392 {
16393         void **cb = (void **)msg->cb;
16394         struct cfg80211_registered_device *rdev = cb[2];
16395
16396         nla_nest_end(msg, cb[1]);
16397         genlmsg_end(msg, cb[0]);
16398
16399         memset(msg->cb, 0, sizeof(msg->cb));
16400
16401         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16402                                 NL80211_MCGRP_MLME, gfp);
16403 }
16404
16405 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16406                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16407                               s32 rssi_level, gfp_t gfp)
16408 {
16409         struct sk_buff *msg;
16410         struct wireless_dev *wdev = dev->ieee80211_ptr;
16411         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16412
16413         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16414
16415         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16416                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16417                 return;
16418
16419         if (wdev->cqm_config) {
16420                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16421
16422                 cfg80211_cqm_rssi_update(rdev, dev);
16423
16424                 if (rssi_level == 0)
16425                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16426         }
16427
16428         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16429         if (!msg)
16430                 return;
16431
16432         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16433                         rssi_event))
16434                 goto nla_put_failure;
16435
16436         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16437                                       rssi_level))
16438                 goto nla_put_failure;
16439
16440         cfg80211_send_cqm(msg, gfp);
16441
16442         return;
16443
16444  nla_put_failure:
16445         nlmsg_free(msg);
16446 }
16447 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16448
16449 void cfg80211_cqm_txe_notify(struct net_device *dev,
16450                              const u8 *peer, u32 num_packets,
16451                              u32 rate, u32 intvl, gfp_t gfp)
16452 {
16453         struct sk_buff *msg;
16454
16455         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16456         if (!msg)
16457                 return;
16458
16459         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16460                 goto nla_put_failure;
16461
16462         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16463                 goto nla_put_failure;
16464
16465         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16466                 goto nla_put_failure;
16467
16468         cfg80211_send_cqm(msg, gfp);
16469         return;
16470
16471  nla_put_failure:
16472         nlmsg_free(msg);
16473 }
16474 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16475
16476 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16477                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16478 {
16479         struct sk_buff *msg;
16480
16481         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16482
16483         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16484         if (!msg)
16485                 return;
16486
16487         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16488                 goto nla_put_failure;
16489
16490         cfg80211_send_cqm(msg, gfp);
16491         return;
16492
16493  nla_put_failure:
16494         nlmsg_free(msg);
16495 }
16496 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16497
16498 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16499 {
16500         struct sk_buff *msg;
16501
16502         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16503         if (!msg)
16504                 return;
16505
16506         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16507                 goto nla_put_failure;
16508
16509         cfg80211_send_cqm(msg, gfp);
16510         return;
16511
16512  nla_put_failure:
16513         nlmsg_free(msg);
16514 }
16515 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16516
16517 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16518                                      struct net_device *netdev, const u8 *bssid,
16519                                      const u8 *replay_ctr, gfp_t gfp)
16520 {
16521         struct sk_buff *msg;
16522         struct nlattr *rekey_attr;
16523         void *hdr;
16524
16525         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16526         if (!msg)
16527                 return;
16528
16529         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16530         if (!hdr) {
16531                 nlmsg_free(msg);
16532                 return;
16533         }
16534
16535         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16536             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16537             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16538                 goto nla_put_failure;
16539
16540         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16541         if (!rekey_attr)
16542                 goto nla_put_failure;
16543
16544         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16545                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16546                 goto nla_put_failure;
16547
16548         nla_nest_end(msg, rekey_attr);
16549
16550         genlmsg_end(msg, hdr);
16551
16552         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16553                                 NL80211_MCGRP_MLME, gfp);
16554         return;
16555
16556  nla_put_failure:
16557         nlmsg_free(msg);
16558 }
16559
16560 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16561                                const u8 *replay_ctr, gfp_t gfp)
16562 {
16563         struct wireless_dev *wdev = dev->ieee80211_ptr;
16564         struct wiphy *wiphy = wdev->wiphy;
16565         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16566
16567         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16568         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16569 }
16570 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16571
16572 static void
16573 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16574                                struct net_device *netdev, int index,
16575                                const u8 *bssid, bool preauth, gfp_t gfp)
16576 {
16577         struct sk_buff *msg;
16578         struct nlattr *attr;
16579         void *hdr;
16580
16581         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16582         if (!msg)
16583                 return;
16584
16585         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16586         if (!hdr) {
16587                 nlmsg_free(msg);
16588                 return;
16589         }
16590
16591         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16592             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16593                 goto nla_put_failure;
16594
16595         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16596         if (!attr)
16597                 goto nla_put_failure;
16598
16599         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16600             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16601             (preauth &&
16602              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16603                 goto nla_put_failure;
16604
16605         nla_nest_end(msg, attr);
16606
16607         genlmsg_end(msg, hdr);
16608
16609         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16610                                 NL80211_MCGRP_MLME, gfp);
16611         return;
16612
16613  nla_put_failure:
16614         nlmsg_free(msg);
16615 }
16616
16617 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16618                                      const u8 *bssid, bool preauth, gfp_t gfp)
16619 {
16620         struct wireless_dev *wdev = dev->ieee80211_ptr;
16621         struct wiphy *wiphy = wdev->wiphy;
16622         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16623
16624         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16625         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16626 }
16627 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16628
16629 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16630                                      struct net_device *netdev,
16631                                      struct cfg80211_chan_def *chandef,
16632                                      gfp_t gfp,
16633                                      enum nl80211_commands notif,
16634                                      u8 count)
16635 {
16636         struct sk_buff *msg;
16637         void *hdr;
16638
16639         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16640         if (!msg)
16641                 return;
16642
16643         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16644         if (!hdr) {
16645                 nlmsg_free(msg);
16646                 return;
16647         }
16648
16649         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16650                 goto nla_put_failure;
16651
16652         if (nl80211_send_chandef(msg, chandef))
16653                 goto nla_put_failure;
16654
16655         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16656             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16657                         goto nla_put_failure;
16658
16659         genlmsg_end(msg, hdr);
16660
16661         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16662                                 NL80211_MCGRP_MLME, gfp);
16663         return;
16664
16665  nla_put_failure:
16666         nlmsg_free(msg);
16667 }
16668
16669 void cfg80211_ch_switch_notify(struct net_device *dev,
16670                                struct cfg80211_chan_def *chandef)
16671 {
16672         struct wireless_dev *wdev = dev->ieee80211_ptr;
16673         struct wiphy *wiphy = wdev->wiphy;
16674         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16675
16676         ASSERT_WDEV_LOCK(wdev);
16677
16678         trace_cfg80211_ch_switch_notify(dev, chandef);
16679
16680         wdev->chandef = *chandef;
16681         wdev->preset_chandef = *chandef;
16682
16683         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16684             !WARN_ON(!wdev->current_bss))
16685                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16686
16687         cfg80211_sched_dfs_chan_update(rdev);
16688
16689         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16690                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16691 }
16692 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16693
16694 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16695                                        struct cfg80211_chan_def *chandef,
16696                                        u8 count)
16697 {
16698         struct wireless_dev *wdev = dev->ieee80211_ptr;
16699         struct wiphy *wiphy = wdev->wiphy;
16700         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16701
16702         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16703
16704         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16705                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16706 }
16707 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16708
16709 void
16710 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16711                      const struct cfg80211_chan_def *chandef,
16712                      enum nl80211_radar_event event,
16713                      struct net_device *netdev, gfp_t gfp)
16714 {
16715         struct sk_buff *msg;
16716         void *hdr;
16717
16718         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16719         if (!msg)
16720                 return;
16721
16722         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16723         if (!hdr) {
16724                 nlmsg_free(msg);
16725                 return;
16726         }
16727
16728         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16729                 goto nla_put_failure;
16730
16731         /* NOP and radar events don't need a netdev parameter */
16732         if (netdev) {
16733                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16734
16735                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16736                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16737                                       NL80211_ATTR_PAD))
16738                         goto nla_put_failure;
16739         }
16740
16741         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16742                 goto nla_put_failure;
16743
16744         if (nl80211_send_chandef(msg, chandef))
16745                 goto nla_put_failure;
16746
16747         genlmsg_end(msg, hdr);
16748
16749         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16750                                 NL80211_MCGRP_MLME, gfp);
16751         return;
16752
16753  nla_put_failure:
16754         nlmsg_free(msg);
16755 }
16756
16757 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16758                                        struct sta_opmode_info *sta_opmode,
16759                                        gfp_t gfp)
16760 {
16761         struct sk_buff *msg;
16762         struct wireless_dev *wdev = dev->ieee80211_ptr;
16763         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16764         void *hdr;
16765
16766         if (WARN_ON(!mac))
16767                 return;
16768
16769         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16770         if (!msg)
16771                 return;
16772
16773         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16774         if (!hdr) {
16775                 nlmsg_free(msg);
16776                 return;
16777         }
16778
16779         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16780                 goto nla_put_failure;
16781
16782         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16783                 goto nla_put_failure;
16784
16785         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16786                 goto nla_put_failure;
16787
16788         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16789             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16790                 goto nla_put_failure;
16791
16792         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16793             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16794                 goto nla_put_failure;
16795
16796         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16797             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16798                 goto nla_put_failure;
16799
16800         genlmsg_end(msg, hdr);
16801
16802         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16803                                 NL80211_MCGRP_MLME, gfp);
16804
16805         return;
16806
16807 nla_put_failure:
16808         nlmsg_free(msg);
16809 }
16810 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16811
16812 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16813                            u64 cookie, bool acked, s32 ack_signal,
16814                            bool is_valid_ack_signal, gfp_t gfp)
16815 {
16816         struct wireless_dev *wdev = dev->ieee80211_ptr;
16817         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16818         struct sk_buff *msg;
16819         void *hdr;
16820
16821         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16822
16823         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16824
16825         if (!msg)
16826                 return;
16827
16828         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16829         if (!hdr) {
16830                 nlmsg_free(msg);
16831                 return;
16832         }
16833
16834         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16835             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16836             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16837             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16838                               NL80211_ATTR_PAD) ||
16839             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16840             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16841                                                 ack_signal)))
16842                 goto nla_put_failure;
16843
16844         genlmsg_end(msg, hdr);
16845
16846         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16847                                 NL80211_MCGRP_MLME, gfp);
16848         return;
16849
16850  nla_put_failure:
16851         nlmsg_free(msg);
16852 }
16853 EXPORT_SYMBOL(cfg80211_probe_status);
16854
16855 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16856                                  const u8 *frame, size_t len,
16857                                  int freq, int sig_dbm)
16858 {
16859         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16860         struct sk_buff *msg;
16861         void *hdr;
16862         struct cfg80211_beacon_registration *reg;
16863
16864         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16865
16866         spin_lock_bh(&rdev->beacon_registrations_lock);
16867         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16868                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16869                 if (!msg) {
16870                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16871                         return;
16872                 }
16873
16874                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16875                 if (!hdr)
16876                         goto nla_put_failure;
16877
16878                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16879                     (freq &&
16880                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16881                     (sig_dbm &&
16882                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16883                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16884                         goto nla_put_failure;
16885
16886                 genlmsg_end(msg, hdr);
16887
16888                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16889         }
16890         spin_unlock_bh(&rdev->beacon_registrations_lock);
16891         return;
16892
16893  nla_put_failure:
16894         spin_unlock_bh(&rdev->beacon_registrations_lock);
16895         nlmsg_free(msg);
16896 }
16897 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16898
16899 #ifdef CONFIG_PM
16900 static int cfg80211_net_detect_results(struct sk_buff *msg,
16901                                        struct cfg80211_wowlan_wakeup *wakeup)
16902 {
16903         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16904         struct nlattr *nl_results, *nl_match, *nl_freqs;
16905         int i, j;
16906
16907         nl_results = nla_nest_start_noflag(msg,
16908                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16909         if (!nl_results)
16910                 return -EMSGSIZE;
16911
16912         for (i = 0; i < nd->n_matches; i++) {
16913                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16914
16915                 nl_match = nla_nest_start_noflag(msg, i);
16916                 if (!nl_match)
16917                         break;
16918
16919                 /* The SSID attribute is optional in nl80211, but for
16920                  * simplicity reasons it's always present in the
16921                  * cfg80211 structure.  If a driver can't pass the
16922                  * SSID, that needs to be changed.  A zero length SSID
16923                  * is still a valid SSID (wildcard), so it cannot be
16924                  * used for this purpose.
16925                  */
16926                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16927                             match->ssid.ssid)) {
16928                         nla_nest_cancel(msg, nl_match);
16929                         goto out;
16930                 }
16931
16932                 if (match->n_channels) {
16933                         nl_freqs = nla_nest_start_noflag(msg,
16934                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16935                         if (!nl_freqs) {
16936                                 nla_nest_cancel(msg, nl_match);
16937                                 goto out;
16938                         }
16939
16940                         for (j = 0; j < match->n_channels; j++) {
16941                                 if (nla_put_u32(msg, j, match->channels[j])) {
16942                                         nla_nest_cancel(msg, nl_freqs);
16943                                         nla_nest_cancel(msg, nl_match);
16944                                         goto out;
16945                                 }
16946                         }
16947
16948                         nla_nest_end(msg, nl_freqs);
16949                 }
16950
16951                 nla_nest_end(msg, nl_match);
16952         }
16953
16954 out:
16955         nla_nest_end(msg, nl_results);
16956         return 0;
16957 }
16958
16959 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16960                                    struct cfg80211_wowlan_wakeup *wakeup,
16961                                    gfp_t gfp)
16962 {
16963         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16964         struct sk_buff *msg;
16965         void *hdr;
16966         int size = 200;
16967
16968         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16969
16970         if (wakeup)
16971                 size += wakeup->packet_present_len;
16972
16973         msg = nlmsg_new(size, gfp);
16974         if (!msg)
16975                 return;
16976
16977         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16978         if (!hdr)
16979                 goto free_msg;
16980
16981         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16982             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16983                               NL80211_ATTR_PAD))
16984                 goto free_msg;
16985
16986         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16987                                         wdev->netdev->ifindex))
16988                 goto free_msg;
16989
16990         if (wakeup) {
16991                 struct nlattr *reasons;
16992
16993                 reasons = nla_nest_start_noflag(msg,
16994                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16995                 if (!reasons)
16996                         goto free_msg;
16997
16998                 if (wakeup->disconnect &&
16999                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17000                         goto free_msg;
17001                 if (wakeup->magic_pkt &&
17002                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17003                         goto free_msg;
17004                 if (wakeup->gtk_rekey_failure &&
17005                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17006                         goto free_msg;
17007                 if (wakeup->eap_identity_req &&
17008                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17009                         goto free_msg;
17010                 if (wakeup->four_way_handshake &&
17011                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17012                         goto free_msg;
17013                 if (wakeup->rfkill_release &&
17014                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17015                         goto free_msg;
17016
17017                 if (wakeup->pattern_idx >= 0 &&
17018                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17019                                 wakeup->pattern_idx))
17020                         goto free_msg;
17021
17022                 if (wakeup->tcp_match &&
17023                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17024                         goto free_msg;
17025
17026                 if (wakeup->tcp_connlost &&
17027                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17028                         goto free_msg;
17029
17030                 if (wakeup->tcp_nomoretokens &&
17031                     nla_put_flag(msg,
17032                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17033                         goto free_msg;
17034
17035                 if (wakeup->packet) {
17036                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17037                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17038
17039                         if (!wakeup->packet_80211) {
17040                                 pkt_attr =
17041                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17042                                 len_attr =
17043                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17044                         }
17045
17046                         if (wakeup->packet_len &&
17047                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17048                                 goto free_msg;
17049
17050                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17051                                     wakeup->packet))
17052                                 goto free_msg;
17053                 }
17054
17055                 if (wakeup->net_detect &&
17056                     cfg80211_net_detect_results(msg, wakeup))
17057                                 goto free_msg;
17058
17059                 nla_nest_end(msg, reasons);
17060         }
17061
17062         genlmsg_end(msg, hdr);
17063
17064         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17065                                 NL80211_MCGRP_MLME, gfp);
17066         return;
17067
17068  free_msg:
17069         nlmsg_free(msg);
17070 }
17071 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17072 #endif
17073
17074 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17075                                 enum nl80211_tdls_operation oper,
17076                                 u16 reason_code, gfp_t gfp)
17077 {
17078         struct wireless_dev *wdev = dev->ieee80211_ptr;
17079         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17080         struct sk_buff *msg;
17081         void *hdr;
17082
17083         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17084                                          reason_code);
17085
17086         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17087         if (!msg)
17088                 return;
17089
17090         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17091         if (!hdr) {
17092                 nlmsg_free(msg);
17093                 return;
17094         }
17095
17096         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17097             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17098             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17099             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17100             (reason_code > 0 &&
17101              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17102                 goto nla_put_failure;
17103
17104         genlmsg_end(msg, hdr);
17105
17106         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17107                                 NL80211_MCGRP_MLME, gfp);
17108         return;
17109
17110  nla_put_failure:
17111         nlmsg_free(msg);
17112 }
17113 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17114
17115 static int nl80211_netlink_notify(struct notifier_block * nb,
17116                                   unsigned long state,
17117                                   void *_notify)
17118 {
17119         struct netlink_notify *notify = _notify;
17120         struct cfg80211_registered_device *rdev;
17121         struct wireless_dev *wdev;
17122         struct cfg80211_beacon_registration *reg, *tmp;
17123
17124         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17125                 return NOTIFY_DONE;
17126
17127         rcu_read_lock();
17128
17129         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17130                 struct cfg80211_sched_scan_request *sched_scan_req;
17131
17132                 list_for_each_entry_rcu(sched_scan_req,
17133                                         &rdev->sched_scan_req_list,
17134                                         list) {
17135                         if (sched_scan_req->owner_nlportid == notify->portid) {
17136                                 sched_scan_req->nl_owner_dead = true;
17137                                 schedule_work(&rdev->sched_scan_stop_wk);
17138                         }
17139                 }
17140
17141                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17142                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17143
17144                         if (wdev->owner_nlportid == notify->portid) {
17145                                 wdev->nl_owner_dead = true;
17146                                 schedule_work(&rdev->destroy_work);
17147                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17148                                 schedule_work(&wdev->disconnect_wk);
17149                         }
17150
17151                         cfg80211_release_pmsr(wdev, notify->portid);
17152                 }
17153
17154                 spin_lock_bh(&rdev->beacon_registrations_lock);
17155                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17156                                          list) {
17157                         if (reg->nlportid == notify->portid) {
17158                                 list_del(&reg->list);
17159                                 kfree(reg);
17160                                 break;
17161                         }
17162                 }
17163                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17164         }
17165
17166         rcu_read_unlock();
17167
17168         /*
17169          * It is possible that the user space process that is controlling the
17170          * indoor setting disappeared, so notify the regulatory core.
17171          */
17172         regulatory_netlink_notify(notify->portid);
17173         return NOTIFY_OK;
17174 }
17175
17176 static struct notifier_block nl80211_netlink_notifier = {
17177         .notifier_call = nl80211_netlink_notify,
17178 };
17179
17180 void cfg80211_ft_event(struct net_device *netdev,
17181                        struct cfg80211_ft_event_params *ft_event)
17182 {
17183         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17184         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17185         struct sk_buff *msg;
17186         void *hdr;
17187
17188         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17189
17190         if (!ft_event->target_ap)
17191                 return;
17192
17193         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17194                         GFP_KERNEL);
17195         if (!msg)
17196                 return;
17197
17198         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17199         if (!hdr)
17200                 goto out;
17201
17202         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17203             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17204             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17205                 goto out;
17206
17207         if (ft_event->ies &&
17208             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17209                 goto out;
17210         if (ft_event->ric_ies &&
17211             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17212                     ft_event->ric_ies))
17213                 goto out;
17214
17215         genlmsg_end(msg, hdr);
17216
17217         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17218                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17219         return;
17220  out:
17221         nlmsg_free(msg);
17222 }
17223 EXPORT_SYMBOL(cfg80211_ft_event);
17224
17225 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17226 {
17227         struct cfg80211_registered_device *rdev;
17228         struct sk_buff *msg;
17229         void *hdr;
17230         u32 nlportid;
17231
17232         rdev = wiphy_to_rdev(wdev->wiphy);
17233         if (!rdev->crit_proto_nlportid)
17234                 return;
17235
17236         nlportid = rdev->crit_proto_nlportid;
17237         rdev->crit_proto_nlportid = 0;
17238
17239         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17240         if (!msg)
17241                 return;
17242
17243         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17244         if (!hdr)
17245                 goto nla_put_failure;
17246
17247         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17248             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17249                               NL80211_ATTR_PAD))
17250                 goto nla_put_failure;
17251
17252         genlmsg_end(msg, hdr);
17253
17254         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17255         return;
17256
17257  nla_put_failure:
17258         nlmsg_free(msg);
17259 }
17260 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17261
17262 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17263 {
17264         struct wiphy *wiphy = wdev->wiphy;
17265         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17266         struct sk_buff *msg;
17267         void *hdr;
17268
17269         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17270         if (!msg)
17271                 return;
17272
17273         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17274         if (!hdr)
17275                 goto out;
17276
17277         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17278             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17279             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17280                               NL80211_ATTR_PAD))
17281                 goto out;
17282
17283         genlmsg_end(msg, hdr);
17284
17285         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17286                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17287         return;
17288  out:
17289         nlmsg_free(msg);
17290 }
17291
17292 int cfg80211_external_auth_request(struct net_device *dev,
17293                                    struct cfg80211_external_auth_params *params,
17294                                    gfp_t gfp)
17295 {
17296         struct wireless_dev *wdev = dev->ieee80211_ptr;
17297         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17298         struct sk_buff *msg;
17299         void *hdr;
17300
17301         if (!wdev->conn_owner_nlportid)
17302                 return -EINVAL;
17303
17304         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17305         if (!msg)
17306                 return -ENOMEM;
17307
17308         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17309         if (!hdr)
17310                 goto nla_put_failure;
17311
17312         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17313             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17314             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17315             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17316                         params->action) ||
17317             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17318             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17319                     params->ssid.ssid))
17320                 goto nla_put_failure;
17321
17322         genlmsg_end(msg, hdr);
17323         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17324                         wdev->conn_owner_nlportid);
17325         return 0;
17326
17327  nla_put_failure:
17328         nlmsg_free(msg);
17329         return -ENOBUFS;
17330 }
17331 EXPORT_SYMBOL(cfg80211_external_auth_request);
17332
17333 void cfg80211_update_owe_info_event(struct net_device *netdev,
17334                                     struct cfg80211_update_owe_info *owe_info,
17335                                     gfp_t gfp)
17336 {
17337         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17338         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17339         struct sk_buff *msg;
17340         void *hdr;
17341
17342         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17343
17344         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17345         if (!msg)
17346                 return;
17347
17348         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17349         if (!hdr)
17350                 goto nla_put_failure;
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, owe_info->peer))
17355                 goto nla_put_failure;
17356
17357         if (!owe_info->ie_len ||
17358             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17359                 goto nla_put_failure;
17360
17361         genlmsg_end(msg, hdr);
17362
17363         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17364                                 NL80211_MCGRP_MLME, gfp);
17365         return;
17366
17367 nla_put_failure:
17368         genlmsg_cancel(msg, hdr);
17369         nlmsg_free(msg);
17370 }
17371 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17372
17373 /* initialisation/exit functions */
17374
17375 int __init nl80211_init(void)
17376 {
17377         int err;
17378
17379         err = genl_register_family(&nl80211_fam);
17380         if (err)
17381                 return err;
17382
17383         err = netlink_register_notifier(&nl80211_netlink_notifier);
17384         if (err)
17385                 goto err_out;
17386
17387         return 0;
17388  err_out:
17389         genl_unregister_family(&nl80211_fam);
17390         return err;
17391 }
17392
17393 void nl80211_exit(void)
17394 {
17395         netlink_unregister_notifier(&nl80211_netlink_notifier);
17396         genl_unregister_family(&nl80211_fam);
17397 }