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) 2018-2019 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 <net/net_namespace.h>
  24 #include <net/genetlink.h>
  25 #include <net/cfg80211.h>
  26 #include <net/sock.h>
  27 #include <net/inet_connection_sock.h>
  28 #include "core.h"
  29 #include "nl80211.h"
  30 #include "reg.h"
  31 #include "rdev-ops.h"
  32
  33 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  34                                    struct genl_info *info,
  35                                    struct cfg80211_crypto_settings *settings,
  36                                    int cipher_limit);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam;
  40
  41 /* multicast groups */
  42 enum nl80211_multicast_groups {
  43         NL80211_MCGRP_CONFIG,
  44         NL80211_MCGRP_SCAN,
  45         NL80211_MCGRP_REGULATORY,
  46         NL80211_MCGRP_MLME,
  47         NL80211_MCGRP_VENDOR,
  48         NL80211_MCGRP_NAN,
  49         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  50 };
  51
  52 static const struct genl_multicast_group nl80211_mcgrps[] = {
  53         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  54         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  55         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  56         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  57         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  58         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  59 #ifdef CONFIG_NL80211_TESTMODE
  60         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  61 #endif
  62 };
  63
  64 /* returns ERR_PTR values */
  65 static struct wireless_dev *
  66 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  67 {
  68         struct cfg80211_registered_device *rdev;
  69         struct wireless_dev *result = NULL;
  70         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  71         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  72         u64 wdev_id;
  73         int wiphy_idx = -1;
  74         int ifidx = -1;
  75
  76         ASSERT_RTNL();
  77
  78         if (!have_ifidx && !have_wdev_id)
  79                 return ERR_PTR(-EINVAL);
  80
  81         if (have_ifidx)
  82                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  83         if (have_wdev_id) {
  84                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  85                 wiphy_idx = wdev_id >> 32;
  86         }
  87
  88         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  89                 struct wireless_dev *wdev;
  90
  91                 if (wiphy_net(&rdev->wiphy) != netns)
  92                         continue;
  93
  94                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  95                         continue;
  96
  97                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  98                         if (have_ifidx && wdev->netdev &&
  99                             wdev->netdev->ifindex == ifidx) {
 100                                 result = wdev;
 101                                 break;
 102                         }
 103                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 104                                 result = wdev;
 105                                 break;
 106                         }
 107                 }
 108
 109                 if (result)
 110                         break;
 111         }
 112
 113         if (result)
 114                 return result;
 115         return ERR_PTR(-ENODEV);
 116 }
 117
 118 static struct cfg80211_registered_device *
 119 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 120 {
 121         struct cfg80211_registered_device *rdev = NULL, *tmp;
 122         struct net_device *netdev;
 123
 124         ASSERT_RTNL();
 125
 126         if (!attrs[NL80211_ATTR_WIPHY] &&
 127             !attrs[NL80211_ATTR_IFINDEX] &&
 128             !attrs[NL80211_ATTR_WDEV])
 129                 return ERR_PTR(-EINVAL);
 130
 131         if (attrs[NL80211_ATTR_WIPHY])
 132                 rdev = cfg80211_rdev_by_wiphy_idx(
 133                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 134
 135         if (attrs[NL80211_ATTR_WDEV]) {
 136                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 137                 struct wireless_dev *wdev;
 138                 bool found = false;
 139
 140                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 141                 if (tmp) {
 142                         /* make sure wdev exists */
 143                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 144                                 if (wdev->identifier != (u32)wdev_id)
 145                                         continue;
 146                                 found = true;
 147                                 break;
 148                         }
 149
 150                         if (!found)
 151                                 tmp = NULL;
 152
 153                         if (rdev && tmp != rdev)
 154                                 return ERR_PTR(-EINVAL);
 155                         rdev = tmp;
 156                 }
 157         }
 158
 159         if (attrs[NL80211_ATTR_IFINDEX]) {
 160                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 161
 162                 netdev = __dev_get_by_index(netns, ifindex);
 163                 if (netdev) {
 164                         if (netdev->ieee80211_ptr)
 165                                 tmp = wiphy_to_rdev(
 166                                         netdev->ieee80211_ptr->wiphy);
 167                         else
 168                                 tmp = NULL;
 169
 170                         /* not wireless device -- return error */
 171                         if (!tmp)
 172                                 return ERR_PTR(-EINVAL);
 173
 174                         /* mismatch -- return error */
 175                         if (rdev && tmp != rdev)
 176                                 return ERR_PTR(-EINVAL);
 177
 178                         rdev = tmp;
 179                 }
 180         }
 181
 182         if (!rdev)
 183                 return ERR_PTR(-ENODEV);
 184
 185         if (netns != wiphy_net(&rdev->wiphy))
 186                 return ERR_PTR(-ENODEV);
 187
 188         return rdev;
 189 }
 190
 191 /*
 192  * This function returns a pointer to the driver
 193  * that the genl_info item that is passed refers to.
 194  *
 195  * The result of this can be a PTR_ERR and hence must
 196  * be checked with IS_ERR() for errors.
 197  */
 198 static struct cfg80211_registered_device *
 199 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 200 {
 201         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 202 }
 203
 204 static int validate_beacon_head(const struct nlattr *attr,
 205                                 struct netlink_ext_ack *extack)
 206 {
 207         const u8 *data = nla_data(attr);
 208         unsigned int len = nla_len(attr);
 209         const struct element *elem;
 210         const struct ieee80211_mgmt *mgmt = (void *)data;
 211         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 212                                          u.beacon.variable);
 213
 214         if (len < fixedlen)
 215                 goto err;
 216
 217         if (ieee80211_hdrlen(mgmt->frame_control) !=
 218             offsetof(struct ieee80211_mgmt, u.beacon))
 219                 goto err;
 220
 221         data += fixedlen;
 222         len -= fixedlen;
 223
 224         for_each_element(elem, data, len) {
 225                 /* nothing */
 226         }
 227
 228         if (for_each_element_completed(elem, data, len))
 229                 return 0;
 230
 231 err:
 232         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 233         return -EINVAL;
 234 }
 235
 236 static int validate_ie_attr(const struct nlattr *attr,
 237                             struct netlink_ext_ack *extack)
 238 {
 239         const u8 *data = nla_data(attr);
 240         unsigned int len = nla_len(attr);
 241         const struct element *elem;
 242
 243         for_each_element(elem, data, len) {
 244                 /* nothing */
 245         }
 246
 247         if (for_each_element_completed(elem, data, len))
 248                 return 0;
 249
 250         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 251         return -EINVAL;
 252 }
 253
 254 /* policy for the attributes */
 255 static const struct nla_policy
 256 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 257         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 258         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 259                                         .len = U8_MAX },
 260         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 261                                              .len = U8_MAX },
 262 };
 263
 264 static const struct nla_policy
 265 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 266         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 267         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 268         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 269                 NLA_POLICY_MAX(NLA_U8, 15),
 270         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 272                 NLA_POLICY_MAX(NLA_U8, 15),
 273         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 274                 NLA_POLICY_MAX(NLA_U8, 31),
 275         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 276         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 278 };
 279
 280 static const struct nla_policy
 281 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 282         [NL80211_PMSR_TYPE_FTM] =
 283                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 284 };
 285
 286 static const struct nla_policy
 287 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 288         [NL80211_PMSR_REQ_ATTR_DATA] =
 289                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 290         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 291 };
 292
 293 static const struct nla_policy
 294 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 295         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 296         /*
 297          * we could specify this again to be the top-level policy,
 298          * but that would open us up to recursion problems ...
 299          */
 300         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 301         [NL80211_PMSR_PEER_ATTR_REQ] =
 302                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 303         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 304 };
 305
 306 static const struct nla_policy
 307 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 308         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 309         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_PEERS] =
 313                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 314 };
 315
 316 static const struct nla_policy
 317 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 318         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 319                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 320         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 321                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 322 };
 323
 324 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 325         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 326         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 327         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 328                                       .len = 20-1 },
 329         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 330
 331         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 332         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 333         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 334                                                 NL80211_EDMG_CHANNELS_MIN,
 335                                                 NL80211_EDMG_CHANNELS_MAX),
 336         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 337                                                 NL80211_EDMG_BW_CONFIG_MIN,
 338                                                 NL80211_EDMG_BW_CONFIG_MAX),
 339
 340         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 341         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 342         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 343
 344         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 345         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 346         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 347         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 348         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 349         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 350
 351         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 352         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 353         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 354
 355         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 356         [NL80211_ATTR_PREV_BSSID] = {
 357                 .type = NLA_EXACT_LEN_WARN,
 358                 .len = ETH_ALEN
 359         },
 360
 361         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 362         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 363                                     .len = WLAN_MAX_KEY_LEN },
 364         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 365         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 366         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 368         [NL80211_ATTR_KEY_TYPE] =
 369                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 370
 371         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 372         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 373         [NL80211_ATTR_BEACON_HEAD] =
 374                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 375                                        IEEE80211_MAX_DATA_LEN),
 376         [NL80211_ATTR_BEACON_TAIL] =
 377                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 378                                        IEEE80211_MAX_DATA_LEN),
 379         [NL80211_ATTR_STA_AID] =
 380                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 381         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 382         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 383         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 384                                                .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_ATTR_STA_PLINK_ACTION] =
 386                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 387         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 388                 NLA_POLICY_RANGE(NLA_U8,
 389                                  NL80211_TX_POWER_AUTOMATIC,
 390                                  NL80211_TX_POWER_FIXED),
 391         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 392         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 393         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 394         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 395                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 396         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 397
 398         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 399         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 400
 401         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 402         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 403         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 404         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 405                                            .len = NL80211_MAX_SUPP_RATES },
 406         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 407
 408         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 409         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 410
 411         [NL80211_ATTR_HT_CAPABILITY] = {
 412                 .type = NLA_EXACT_LEN_WARN,
 413                 .len = NL80211_HT_CAPABILITY_LEN
 414         },
 415
 416         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 417         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 418                                                    validate_ie_attr,
 419                                                    IEEE80211_MAX_DATA_LEN),
 420         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 421         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 422
 423         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 424                                 .len = IEEE80211_MAX_SSID_LEN },
 425         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 426         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 427         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 428         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 429         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 430                                                   NL80211_MFP_NO,
 431                                                   NL80211_MFP_OPTIONAL),
 432         [NL80211_ATTR_STA_FLAGS2] = {
 433                 .len = sizeof(struct nl80211_sta_flag_update),
 434         },
 435         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 436         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 437         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 438         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 439         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 440         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 441         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 442         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 443         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 444         [NL80211_ATTR_PMKID] = {
 445                 .type = NLA_EXACT_LEN_WARN,
 446                 .len = WLAN_PMKID_LEN
 447         },
 448         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 449         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 450         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 451         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 452                                  .len = IEEE80211_MAX_DATA_LEN },
 453         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 454         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 455                                                    NL80211_PS_DISABLED,
 456                                                    NL80211_PS_ENABLED),
 457         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 458         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 459         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 460         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 461         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 462         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 463         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 464         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 465         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 466         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 467         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 468         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 469         [NL80211_ATTR_STA_PLINK_STATE] =
 470                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 471         [NL80211_ATTR_MESH_PEER_AID] =
 472                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 473         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 474         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 475         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 476         [NL80211_ATTR_HIDDEN_SSID] =
 477                 NLA_POLICY_RANGE(NLA_U32,
 478                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 479                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 480         [NL80211_ATTR_IE_PROBE_RESP] =
 481                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 482                                        IEEE80211_MAX_DATA_LEN),
 483         [NL80211_ATTR_IE_ASSOC_RESP] =
 484                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 485                                        IEEE80211_MAX_DATA_LEN),
 486         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 487         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 488         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 489         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 490         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 491         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 492         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 493         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 494         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 495         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 496         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 497                                       .len = IEEE80211_MAX_DATA_LEN },
 498         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 499         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 500         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 501                 .len = NL80211_HT_CAPABILITY_LEN
 502         },
 503         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 504         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 505         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 506         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 507         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 508         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 509         [NL80211_ATTR_VHT_CAPABILITY] = {
 510                 .type = NLA_EXACT_LEN_WARN,
 511                 .len = NL80211_VHT_CAPABILITY_LEN
 512         },
 513         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 514         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 515         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 516         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 517                 NLA_POLICY_RANGE(NLA_U32,
 518                                  NL80211_MESH_POWER_UNKNOWN + 1,
 519                                  NL80211_MESH_POWER_MAX),
 520         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 521         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 523         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 524         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 525         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 526         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 527                 .len = NL80211_VHT_CAPABILITY_LEN,
 528         },
 529         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 530         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 531                                   .len = IEEE80211_MAX_DATA_LEN },
 532         [NL80211_ATTR_PEER_AID] =
 533                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 534         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 535         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 536         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 537         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 538         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 539         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 540         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 541         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 542         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 543         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 544         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 545         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 546         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 547                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 548         [NL80211_ATTR_MAC_HINT] = {
 549                 .type = NLA_EXACT_LEN_WARN,
 550                 .len = ETH_ALEN
 551         },
 552         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 553         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 554         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 555         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 556         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 557         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 558         [NL80211_ATTR_USER_PRIO] =
 559                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 560         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 561         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 562         [NL80211_ATTR_MAC_MASK] = {
 563                 .type = NLA_EXACT_LEN_WARN,
 564                 .len = ETH_ALEN
 565         },
 566         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 568         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 569         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 570         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 572         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 573                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 574         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 575                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 576         },
 577         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 578                 .type = NLA_EXACT_LEN_WARN,
 579                 .len = ETH_ALEN
 580         },
 581         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 582         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 583         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 584         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 585                                     .len = FILS_MAX_KEK_LEN },
 586         [NL80211_ATTR_FILS_NONCES] = {
 587                 .type = NLA_EXACT_LEN_WARN,
 588                 .len = 2 * FILS_NONCE_LEN
 589         },
 590         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 591         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 592         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 593         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 594                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 595         },
 596         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 597         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 598                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 599         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 600                                           .len = FILS_ERP_MAX_REALM_LEN },
 601         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 602         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 603                                         .len = FILS_ERP_MAX_RRK_LEN },
 604         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 605         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 606         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 608
 609         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 610         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 611         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 612         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 613                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 614
 615         [NL80211_ATTR_FTM_RESPONDER] = {
 616                 .type = NLA_NESTED,
 617                 .validation_data = nl80211_ftm_responder_policy,
 618         },
 619         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 620         [NL80211_ATTR_PEER_MEASUREMENTS] =
 621                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 622         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 623         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 624                                         .len = SAE_PASSWORD_MAX_LEN },
 625         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 626         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 627 };
 628
 629 /* policy for the key attributes */
 630 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 631         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 632         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 633         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 634         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 635         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 636         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 637         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 638         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 639         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 640 };
 641
 642 /* policy for the key default flags */
 643 static const struct nla_policy
 644 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 645         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 646         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 647 };
 648
 649 #ifdef CONFIG_PM
 650 /* policy for WoWLAN attributes */
 651 static const struct nla_policy
 652 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 653         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 654         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 655         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 656         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 657         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 658         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 659         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 660         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 661         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 662         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 663 };
 664
 665 static const struct nla_policy
 666 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 667         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 668         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 669         [NL80211_WOWLAN_TCP_DST_MAC] = {
 670                 .type = NLA_EXACT_LEN_WARN,
 671                 .len = ETH_ALEN
 672         },
 673         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 674         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 675         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 676         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 677                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 678         },
 679         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 680                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 681         },
 682         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 683         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 684         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 685 };
 686 #endif /* CONFIG_PM */
 687
 688 /* policy for coalesce rule attributes */
 689 static const struct nla_policy
 690 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 691         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 692         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 693                 NLA_POLICY_RANGE(NLA_U32,
 694                                  NL80211_COALESCE_CONDITION_MATCH,
 695                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 696         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 697 };
 698
 699 /* policy for GTK rekey offload attributes */
 700 static const struct nla_policy
 701 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 702         [NL80211_REKEY_DATA_KEK] = {
 703                 .type = NLA_EXACT_LEN_WARN,
 704                 .len = NL80211_KEK_LEN,
 705         },
 706         [NL80211_REKEY_DATA_KCK] = {
 707                 .type = NLA_EXACT_LEN_WARN,
 708                 .len = NL80211_KCK_LEN,
 709         },
 710         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 711                 .type = NLA_EXACT_LEN_WARN,
 712                 .len = NL80211_REPLAY_CTR_LEN
 713         },
 714 };
 715
 716 static const struct nla_policy
 717 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 718         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 719         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 720         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 721         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 722 };
 723
 724 static const struct nla_policy
 725 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 726         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 727                                                  .len = IEEE80211_MAX_SSID_LEN },
 728         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 729                 .type = NLA_EXACT_LEN_WARN,
 730                 .len = ETH_ALEN
 731         },
 732         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 733         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 734                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 735 };
 736
 737 static const struct nla_policy
 738 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 739         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 740         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 741 };
 742
 743 static const struct nla_policy
 744 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 745         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 746         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 747         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 748                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 749         },
 750 };
 751
 752 /* policy for NAN function attributes */
 753 static const struct nla_policy
 754 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 755         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 756         [NL80211_NAN_FUNC_SERVICE_ID] = {
 757                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 758         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 759         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 760         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 761         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 762         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 763         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 764                 .type = NLA_EXACT_LEN_WARN,
 765                 .len = ETH_ALEN
 766         },
 767         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 768         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 769         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 770                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 771         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 772         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 773         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 774         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 775         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 776 };
 777
 778 /* policy for Service Response Filter attributes */
 779 static const struct nla_policy
 780 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 781         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 782         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 783                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 784         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 785         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 786 };
 787
 788 /* policy for packet pattern attributes */
 789 static const struct nla_policy
 790 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 791         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 792         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 793         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 794 };
 795
 796 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 797                               struct cfg80211_registered_device **rdev,
 798                               struct wireless_dev **wdev)
 799 {
 800         int err;
 801
 802         if (!cb->args[0]) {
 803                 struct nlattr **attrbuf;
 804
 805                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 806                                   GFP_KERNEL);
 807                 if (!attrbuf)
 808                         return -ENOMEM;
 809
 810                 err = nlmsg_parse_deprecated(cb->nlh,
 811                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 812                                              attrbuf, nl80211_fam.maxattr,
 813                                              nl80211_policy, NULL);
 814                 if (err) {
 815                         kfree(attrbuf);
 816                         return err;
 817                 }
 818
 819                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 820                                                    attrbuf);
 821                 kfree(attrbuf);
 822                 if (IS_ERR(*wdev))
 823                         return PTR_ERR(*wdev);
 824                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 825                 /* 0 is the first index - add 1 to parse only once */
 826                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 827                 cb->args[1] = (*wdev)->identifier;
 828         } else {
 829                 /* subtract the 1 again here */
 830                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 831                 struct wireless_dev *tmp;
 832
 833                 if (!wiphy)
 834                         return -ENODEV;
 835                 *rdev = wiphy_to_rdev(wiphy);
 836                 *wdev = NULL;
 837
 838                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 839                         if (tmp->identifier == cb->args[1]) {
 840                                 *wdev = tmp;
 841                                 break;
 842                         }
 843                 }
 844
 845                 if (!*wdev)
 846                         return -ENODEV;
 847         }
 848
 849         return 0;
 850 }
 851
 852 /* message building helper */
 853 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 854                      int flags, u8 cmd)
 855 {
 856         /* since there is no private header just add the generic one */
 857         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 858 }
 859
 860 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 861                                      const struct ieee80211_reg_rule *rule)
 862 {
 863         int j;
 864         struct nlattr *nl_wmm_rules =
 865                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 866
 867         if (!nl_wmm_rules)
 868                 goto nla_put_failure;
 869
 870         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 871                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 872
 873                 if (!nl_wmm_rule)
 874                         goto nla_put_failure;
 875
 876                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 877                                 rule->wmm_rule.client[j].cw_min) ||
 878                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 879                                 rule->wmm_rule.client[j].cw_max) ||
 880                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 881                                rule->wmm_rule.client[j].aifsn) ||
 882                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 883                                 rule->wmm_rule.client[j].cot))
 884                         goto nla_put_failure;
 885
 886                 nla_nest_end(msg, nl_wmm_rule);
 887         }
 888         nla_nest_end(msg, nl_wmm_rules);
 889
 890         return 0;
 891
 892 nla_put_failure:
 893         return -ENOBUFS;
 894 }
 895
 896 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 897                                    struct ieee80211_channel *chan,
 898                                    bool large)
 899 {
 900         /* Some channels must be completely excluded from the
 901          * list to protect old user-space tools from breaking
 902          */
 903         if (!large && chan->flags &
 904             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 905                 return 0;
 906
 907         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 908                         chan->center_freq))
 909                 goto nla_put_failure;
 910
 911         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 912             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 913                 goto nla_put_failure;
 914         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 915                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 916                         goto nla_put_failure;
 917                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 918                         goto nla_put_failure;
 919         }
 920         if (chan->flags & IEEE80211_CHAN_RADAR) {
 921                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 922                         goto nla_put_failure;
 923                 if (large) {
 924                         u32 time;
 925
 926                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 927
 928                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 929                                         chan->dfs_state))
 930                                 goto nla_put_failure;
 931                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 932                                         time))
 933                                 goto nla_put_failure;
 934                         if (nla_put_u32(msg,
 935                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 936                                         chan->dfs_cac_ms))
 937                                 goto nla_put_failure;
 938                 }
 939         }
 940
 941         if (large) {
 942                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 943                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 944                         goto nla_put_failure;
 945                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 946                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 947                         goto nla_put_failure;
 948                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 949                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 950                         goto nla_put_failure;
 951                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 952                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 953                         goto nla_put_failure;
 954                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 955                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 956                         goto nla_put_failure;
 957                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 958                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 959                         goto nla_put_failure;
 960                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 961                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 962                         goto nla_put_failure;
 963                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 964                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 965                         goto nla_put_failure;
 966         }
 967
 968         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 969                         DBM_TO_MBM(chan->max_power)))
 970                 goto nla_put_failure;
 971
 972         if (large) {
 973                 const struct ieee80211_reg_rule *rule =
 974                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 975
 976                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 977                         if (nl80211_msg_put_wmm_rules(msg, rule))
 978                                 goto nla_put_failure;
 979                 }
 980         }
 981
 982         return 0;
 983
 984  nla_put_failure:
 985         return -ENOBUFS;
 986 }
 987
 988 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 989                                   struct cfg80211_txq_stats *txqstats,
 990                                   int attrtype)
 991 {
 992         struct nlattr *txqattr;
 993
 994 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 995         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 996             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 997                 return false;                                             \
 998         } while (0)
 999
1000         txqattr = nla_nest_start_noflag(msg, attrtype);
1001         if (!txqattr)
1002                 return false;
1003
1004         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1005         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1006         PUT_TXQVAL_U32(FLOWS, flows);
1007         PUT_TXQVAL_U32(DROPS, drops);
1008         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1009         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1010         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1011         PUT_TXQVAL_U32(COLLISIONS, collisions);
1012         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1013         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1014         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1015         nla_nest_end(msg, txqattr);
1016
1017 #undef PUT_TXQVAL_U32
1018         return true;
1019 }
1020
1021 /* netlink command implementations */
1022
1023 struct key_parse {
1024         struct key_params p;
1025         int idx;
1026         int type;
1027         bool def, defmgmt;
1028         bool def_uni, def_multi;
1029 };
1030
1031 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1032                                  struct key_parse *k)
1033 {
1034         struct nlattr *tb[NL80211_KEY_MAX + 1];
1035         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1036                                               nl80211_key_policy,
1037                                               info->extack);
1038         if (err)
1039                 return err;
1040
1041         k->def = !!tb[NL80211_KEY_DEFAULT];
1042         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1043
1044         if (k->def) {
1045                 k->def_uni = true;
1046                 k->def_multi = true;
1047         }
1048         if (k->defmgmt)
1049                 k->def_multi = true;
1050
1051         if (tb[NL80211_KEY_IDX])
1052                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1053
1054         if (tb[NL80211_KEY_DATA]) {
1055                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1056                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1057         }
1058
1059         if (tb[NL80211_KEY_SEQ]) {
1060                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1061                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1062         }
1063
1064         if (tb[NL80211_KEY_CIPHER])
1065                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1066
1067         if (tb[NL80211_KEY_TYPE])
1068                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1069
1070         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1071                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1072
1073                 err = nla_parse_nested_deprecated(kdt,
1074                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1075                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1076                                                   nl80211_key_default_policy,
1077                                                   info->extack);
1078                 if (err)
1079                         return err;
1080
1081                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1082                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1083         }
1084
1085         if (tb[NL80211_KEY_MODE])
1086                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1087
1088         return 0;
1089 }
1090
1091 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1092 {
1093         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1094                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1095                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1096         }
1097
1098         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1099                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1100                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1101         }
1102
1103         if (info->attrs[NL80211_ATTR_KEY_IDX])
1104                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1105
1106         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1107                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1108
1109         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1110         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1111
1112         if (k->def) {
1113                 k->def_uni = true;
1114                 k->def_multi = true;
1115         }
1116         if (k->defmgmt)
1117                 k->def_multi = true;
1118
1119         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1120                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1121
1122         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1123                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1124                 int err = nla_parse_nested_deprecated(kdt,
1125                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1126                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1127                                                       nl80211_key_default_policy,
1128                                                       info->extack);
1129                 if (err)
1130                         return err;
1131
1132                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1133                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1134         }
1135
1136         return 0;
1137 }
1138
1139 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1140 {
1141         int err;
1142
1143         memset(k, 0, sizeof(*k));
1144         k->idx = -1;
1145         k->type = -1;
1146
1147         if (info->attrs[NL80211_ATTR_KEY])
1148                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1149         else
1150                 err = nl80211_parse_key_old(info, k);
1151
1152         if (err)
1153                 return err;
1154
1155         if (k->def && k->defmgmt) {
1156                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1157                 return -EINVAL;
1158         }
1159
1160         if (k->defmgmt) {
1161                 if (k->def_uni || !k->def_multi) {
1162                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1163                         return -EINVAL;
1164                 }
1165         }
1166
1167         if (k->idx != -1) {
1168                 if (k->defmgmt) {
1169                         if (k->idx < 4 || k->idx > 5) {
1170                                 GENL_SET_ERR_MSG(info,
1171                                                  "defmgmt key idx not 4 or 5");
1172                                 return -EINVAL;
1173                         }
1174                 } else if (k->def) {
1175                         if (k->idx < 0 || k->idx > 3) {
1176                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1177                                 return -EINVAL;
1178                         }
1179                 } else {
1180                         if (k->idx < 0 || k->idx > 5) {
1181                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1182                                 return -EINVAL;
1183                         }
1184                 }
1185         }
1186
1187         return 0;
1188 }
1189
1190 static struct cfg80211_cached_keys *
1191 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1192                        struct genl_info *info, bool *no_ht)
1193 {
1194         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1195         struct key_parse parse;
1196         struct nlattr *key;
1197         struct cfg80211_cached_keys *result;
1198         int rem, err, def = 0;
1199         bool have_key = false;
1200
1201         nla_for_each_nested(key, keys, rem) {
1202                 have_key = true;
1203                 break;
1204         }
1205
1206         if (!have_key)
1207                 return NULL;
1208
1209         result = kzalloc(sizeof(*result), GFP_KERNEL);
1210         if (!result)
1211                 return ERR_PTR(-ENOMEM);
1212
1213         result->def = -1;
1214
1215         nla_for_each_nested(key, keys, rem) {
1216                 memset(&parse, 0, sizeof(parse));
1217                 parse.idx = -1;
1218
1219                 err = nl80211_parse_key_new(info, key, &parse);
1220                 if (err)
1221                         goto error;
1222                 err = -EINVAL;
1223                 if (!parse.p.key)
1224                         goto error;
1225                 if (parse.idx < 0 || parse.idx > 3) {
1226                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1227                         goto error;
1228                 }
1229                 if (parse.def) {
1230                         if (def) {
1231                                 GENL_SET_ERR_MSG(info,
1232                                                  "only one key can be default");
1233                                 goto error;
1234                         }
1235                         def = 1;
1236                         result->def = parse.idx;
1237                         if (!parse.def_uni || !parse.def_multi)
1238                                 goto error;
1239                 } else if (parse.defmgmt)
1240                         goto error;
1241                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1242                                                      parse.idx, false, NULL);
1243                 if (err)
1244                         goto error;
1245                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1246                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1247                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1248                         err = -EINVAL;
1249                         goto error;
1250                 }
1251                 result->params[parse.idx].cipher = parse.p.cipher;
1252                 result->params[parse.idx].key_len = parse.p.key_len;
1253                 result->params[parse.idx].key = result->data[parse.idx];
1254                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1255
1256                 /* must be WEP key if we got here */
1257                 if (no_ht)
1258                         *no_ht = true;
1259         }
1260
1261         if (result->def < 0) {
1262                 err = -EINVAL;
1263                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1264                 goto error;
1265         }
1266
1267         return result;
1268  error:
1269         kfree(result);
1270         return ERR_PTR(err);
1271 }
1272
1273 static int nl80211_key_allowed(struct wireless_dev *wdev)
1274 {
1275         ASSERT_WDEV_LOCK(wdev);
1276
1277         switch (wdev->iftype) {
1278         case NL80211_IFTYPE_AP:
1279         case NL80211_IFTYPE_AP_VLAN:
1280         case NL80211_IFTYPE_P2P_GO:
1281         case NL80211_IFTYPE_MESH_POINT:
1282                 break;
1283         case NL80211_IFTYPE_ADHOC:
1284         case NL80211_IFTYPE_STATION:
1285         case NL80211_IFTYPE_P2P_CLIENT:
1286                 if (!wdev->current_bss)
1287                         return -ENOLINK;
1288                 break;
1289         case NL80211_IFTYPE_UNSPECIFIED:
1290         case NL80211_IFTYPE_OCB:
1291         case NL80211_IFTYPE_MONITOR:
1292         case NL80211_IFTYPE_NAN:
1293         case NL80211_IFTYPE_P2P_DEVICE:
1294         case NL80211_IFTYPE_WDS:
1295         case NUM_NL80211_IFTYPES:
1296                 return -EINVAL;
1297         }
1298
1299         return 0;
1300 }
1301
1302 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1303                                                         struct nlattr *tb)
1304 {
1305         struct ieee80211_channel *chan;
1306
1307         if (tb == NULL)
1308                 return NULL;
1309         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1310         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1311                 return NULL;
1312         return chan;
1313 }
1314
1315 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1316 {
1317         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1318         int i;
1319
1320         if (!nl_modes)
1321                 goto nla_put_failure;
1322
1323         i = 0;
1324         while (ifmodes) {
1325                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1326                         goto nla_put_failure;
1327                 ifmodes >>= 1;
1328                 i++;
1329         }
1330
1331         nla_nest_end(msg, nl_modes);
1332         return 0;
1333
1334 nla_put_failure:
1335         return -ENOBUFS;
1336 }
1337
1338 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1339                                           struct sk_buff *msg,
1340                                           bool large)
1341 {
1342         struct nlattr *nl_combis;
1343         int i, j;
1344
1345         nl_combis = nla_nest_start_noflag(msg,
1346                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1347         if (!nl_combis)
1348                 goto nla_put_failure;
1349
1350         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1351                 const struct ieee80211_iface_combination *c;
1352                 struct nlattr *nl_combi, *nl_limits;
1353
1354                 c = &wiphy->iface_combinations[i];
1355
1356                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1357                 if (!nl_combi)
1358                         goto nla_put_failure;
1359
1360                 nl_limits = nla_nest_start_noflag(msg,
1361                                                   NL80211_IFACE_COMB_LIMITS);
1362                 if (!nl_limits)
1363                         goto nla_put_failure;
1364
1365                 for (j = 0; j < c->n_limits; j++) {
1366                         struct nlattr *nl_limit;
1367
1368                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1369                         if (!nl_limit)
1370                                 goto nla_put_failure;
1371                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1372                                         c->limits[j].max))
1373                                 goto nla_put_failure;
1374                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1375                                                 c->limits[j].types))
1376                                 goto nla_put_failure;
1377                         nla_nest_end(msg, nl_limit);
1378                 }
1379
1380                 nla_nest_end(msg, nl_limits);
1381
1382                 if (c->beacon_int_infra_match &&
1383                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1384                         goto nla_put_failure;
1385                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1386                                 c->num_different_channels) ||
1387                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1388                                 c->max_interfaces))
1389                         goto nla_put_failure;
1390                 if (large &&
1391                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1392                                 c->radar_detect_widths) ||
1393                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1394                                 c->radar_detect_regions)))
1395                         goto nla_put_failure;
1396                 if (c->beacon_int_min_gcd &&
1397                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1398                                 c->beacon_int_min_gcd))
1399                         goto nla_put_failure;
1400
1401                 nla_nest_end(msg, nl_combi);
1402         }
1403
1404         nla_nest_end(msg, nl_combis);
1405
1406         return 0;
1407 nla_put_failure:
1408         return -ENOBUFS;
1409 }
1410
1411 #ifdef CONFIG_PM
1412 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1413                                         struct sk_buff *msg)
1414 {
1415         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1416         struct nlattr *nl_tcp;
1417
1418         if (!tcp)
1419                 return 0;
1420
1421         nl_tcp = nla_nest_start_noflag(msg,
1422                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1423         if (!nl_tcp)
1424                 return -ENOBUFS;
1425
1426         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1427                         tcp->data_payload_max))
1428                 return -ENOBUFS;
1429
1430         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1431                         tcp->data_payload_max))
1432                 return -ENOBUFS;
1433
1434         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1435                 return -ENOBUFS;
1436
1437         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1438                                 sizeof(*tcp->tok), tcp->tok))
1439                 return -ENOBUFS;
1440
1441         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1442                         tcp->data_interval_max))
1443                 return -ENOBUFS;
1444
1445         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1446                         tcp->wake_payload_max))
1447                 return -ENOBUFS;
1448
1449         nla_nest_end(msg, nl_tcp);
1450         return 0;
1451 }
1452
1453 static int nl80211_send_wowlan(struct sk_buff *msg,
1454                                struct cfg80211_registered_device *rdev,
1455                                bool large)
1456 {
1457         struct nlattr *nl_wowlan;
1458
1459         if (!rdev->wiphy.wowlan)
1460                 return 0;
1461
1462         nl_wowlan = nla_nest_start_noflag(msg,
1463                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1464         if (!nl_wowlan)
1465                 return -ENOBUFS;
1466
1467         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1468              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1469             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1470              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1471             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1472              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1473             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1474              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1475             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1476              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1477             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1478              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1479             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1480              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1481             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1482              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1483                 return -ENOBUFS;
1484
1485         if (rdev->wiphy.wowlan->n_patterns) {
1486                 struct nl80211_pattern_support pat = {
1487                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1488                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1489                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1490                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1491                 };
1492
1493                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1494                             sizeof(pat), &pat))
1495                         return -ENOBUFS;
1496         }
1497
1498         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1499             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1500                         rdev->wiphy.wowlan->max_nd_match_sets))
1501                 return -ENOBUFS;
1502
1503         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1504                 return -ENOBUFS;
1505
1506         nla_nest_end(msg, nl_wowlan);
1507
1508         return 0;
1509 }
1510 #endif
1511
1512 static int nl80211_send_coalesce(struct sk_buff *msg,
1513                                  struct cfg80211_registered_device *rdev)
1514 {
1515         struct nl80211_coalesce_rule_support rule;
1516
1517         if (!rdev->wiphy.coalesce)
1518                 return 0;
1519
1520         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1521         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1522         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1523         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1524         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1525         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1526
1527         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1528                 return -ENOBUFS;
1529
1530         return 0;
1531 }
1532
1533 static int
1534 nl80211_send_iftype_data(struct sk_buff *msg,
1535                          const struct ieee80211_sband_iftype_data *iftdata)
1536 {
1537         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1538
1539         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1540                                 iftdata->types_mask))
1541                 return -ENOBUFS;
1542
1543         if (he_cap->has_he) {
1544                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1545                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1546                             he_cap->he_cap_elem.mac_cap_info) ||
1547                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1548                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1549                             he_cap->he_cap_elem.phy_cap_info) ||
1550                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1551                             sizeof(he_cap->he_mcs_nss_supp),
1552                             &he_cap->he_mcs_nss_supp) ||
1553                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1554                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1555                         return -ENOBUFS;
1556         }
1557
1558         return 0;
1559 }
1560
1561 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1562                                       struct ieee80211_supported_band *sband)
1563 {
1564         struct nlattr *nl_rates, *nl_rate;
1565         struct ieee80211_rate *rate;
1566         int i;
1567
1568         /* add HT info */
1569         if (sband->ht_cap.ht_supported &&
1570             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1571                      sizeof(sband->ht_cap.mcs),
1572                      &sband->ht_cap.mcs) ||
1573              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1574                          sband->ht_cap.cap) ||
1575              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1576                         sband->ht_cap.ampdu_factor) ||
1577              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1578                         sband->ht_cap.ampdu_density)))
1579                 return -ENOBUFS;
1580
1581         /* add VHT info */
1582         if (sband->vht_cap.vht_supported &&
1583             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1584                      sizeof(sband->vht_cap.vht_mcs),
1585                      &sband->vht_cap.vht_mcs) ||
1586              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1587                          sband->vht_cap.cap)))
1588                 return -ENOBUFS;
1589
1590         if (sband->n_iftype_data) {
1591                 struct nlattr *nl_iftype_data =
1592                         nla_nest_start_noflag(msg,
1593                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1594                 int err;
1595
1596                 if (!nl_iftype_data)
1597                         return -ENOBUFS;
1598
1599                 for (i = 0; i < sband->n_iftype_data; i++) {
1600                         struct nlattr *iftdata;
1601
1602                         iftdata = nla_nest_start_noflag(msg, i + 1);
1603                         if (!iftdata)
1604                                 return -ENOBUFS;
1605
1606                         err = nl80211_send_iftype_data(msg,
1607                                                        &sband->iftype_data[i]);
1608                         if (err)
1609                                 return err;
1610
1611                         nla_nest_end(msg, iftdata);
1612                 }
1613
1614                 nla_nest_end(msg, nl_iftype_data);
1615         }
1616
1617         /* add EDMG info */
1618         if (sband->edmg_cap.channels &&
1619             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1620                        sband->edmg_cap.channels) ||
1621             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1622                        sband->edmg_cap.bw_config)))
1623
1624                 return -ENOBUFS;
1625
1626         /* add bitrates */
1627         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1628         if (!nl_rates)
1629                 return -ENOBUFS;
1630
1631         for (i = 0; i < sband->n_bitrates; i++) {
1632                 nl_rate = nla_nest_start_noflag(msg, i);
1633                 if (!nl_rate)
1634                         return -ENOBUFS;
1635
1636                 rate = &sband->bitrates[i];
1637                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1638                                 rate->bitrate))
1639                         return -ENOBUFS;
1640                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1641                     nla_put_flag(msg,
1642                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1643                         return -ENOBUFS;
1644
1645                 nla_nest_end(msg, nl_rate);
1646         }
1647
1648         nla_nest_end(msg, nl_rates);
1649
1650         return 0;
1651 }
1652
1653 static int
1654 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1655                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1656 {
1657         u16 stypes;
1658         struct nlattr *nl_ftypes, *nl_ifs;
1659         enum nl80211_iftype ift;
1660         int i;
1661
1662         if (!mgmt_stypes)
1663                 return 0;
1664
1665         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1666         if (!nl_ifs)
1667                 return -ENOBUFS;
1668
1669         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1670                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1671                 if (!nl_ftypes)
1672                         return -ENOBUFS;
1673                 i = 0;
1674                 stypes = mgmt_stypes[ift].tx;
1675                 while (stypes) {
1676                         if ((stypes & 1) &&
1677                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1678                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1679                                 return -ENOBUFS;
1680                         stypes >>= 1;
1681                         i++;
1682                 }
1683                 nla_nest_end(msg, nl_ftypes);
1684         }
1685
1686         nla_nest_end(msg, nl_ifs);
1687
1688         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1689         if (!nl_ifs)
1690                 return -ENOBUFS;
1691
1692         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1693                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1694                 if (!nl_ftypes)
1695                         return -ENOBUFS;
1696                 i = 0;
1697                 stypes = mgmt_stypes[ift].rx;
1698                 while (stypes) {
1699                         if ((stypes & 1) &&
1700                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1701                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1702                                 return -ENOBUFS;
1703                         stypes >>= 1;
1704                         i++;
1705                 }
1706                 nla_nest_end(msg, nl_ftypes);
1707         }
1708         nla_nest_end(msg, nl_ifs);
1709
1710         return 0;
1711 }
1712
1713 #define CMD(op, n)                                                      \
1714          do {                                                           \
1715                 if (rdev->ops->op) {                                    \
1716                         i++;                                            \
1717                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1718                                 goto nla_put_failure;                   \
1719                 }                                                       \
1720         } while (0)
1721
1722 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1723                                         struct sk_buff *msg)
1724 {
1725         int i = 0;
1726
1727         /*
1728          * do *NOT* add anything into this function, new things need to be
1729          * advertised only to new versions of userspace that can deal with
1730          * the split (and they can't possibly care about new features...
1731          */
1732         CMD(add_virtual_intf, NEW_INTERFACE);
1733         CMD(change_virtual_intf, SET_INTERFACE);
1734         CMD(add_key, NEW_KEY);
1735         CMD(start_ap, START_AP);
1736         CMD(add_station, NEW_STATION);
1737         CMD(add_mpath, NEW_MPATH);
1738         CMD(update_mesh_config, SET_MESH_CONFIG);
1739         CMD(change_bss, SET_BSS);
1740         CMD(auth, AUTHENTICATE);
1741         CMD(assoc, ASSOCIATE);
1742         CMD(deauth, DEAUTHENTICATE);
1743         CMD(disassoc, DISASSOCIATE);
1744         CMD(join_ibss, JOIN_IBSS);
1745         CMD(join_mesh, JOIN_MESH);
1746         CMD(set_pmksa, SET_PMKSA);
1747         CMD(del_pmksa, DEL_PMKSA);
1748         CMD(flush_pmksa, FLUSH_PMKSA);
1749         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1750                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1751         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1752         CMD(mgmt_tx, FRAME);
1753         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1754         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1755                 i++;
1756                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1757                         goto nla_put_failure;
1758         }
1759         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1760             rdev->ops->join_mesh) {
1761                 i++;
1762                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1763                         goto nla_put_failure;
1764         }
1765         CMD(set_wds_peer, SET_WDS_PEER);
1766         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1767                 CMD(tdls_mgmt, TDLS_MGMT);
1768                 CMD(tdls_oper, TDLS_OPER);
1769         }
1770         if (rdev->wiphy.max_sched_scan_reqs)
1771                 CMD(sched_scan_start, START_SCHED_SCAN);
1772         CMD(probe_client, PROBE_CLIENT);
1773         CMD(set_noack_map, SET_NOACK_MAP);
1774         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1775                 i++;
1776                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1777                         goto nla_put_failure;
1778         }
1779         CMD(start_p2p_device, START_P2P_DEVICE);
1780         CMD(set_mcast_rate, SET_MCAST_RATE);
1781 #ifdef CONFIG_NL80211_TESTMODE
1782         CMD(testmode_cmd, TESTMODE);
1783 #endif
1784
1785         if (rdev->ops->connect || rdev->ops->auth) {
1786                 i++;
1787                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1788                         goto nla_put_failure;
1789         }
1790
1791         if (rdev->ops->disconnect || rdev->ops->deauth) {
1792                 i++;
1793                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1794                         goto nla_put_failure;
1795         }
1796
1797         return i;
1798  nla_put_failure:
1799         return -ENOBUFS;
1800 }
1801
1802 static int
1803 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1804                            struct sk_buff *msg)
1805 {
1806         struct nlattr *ftm;
1807
1808         if (!cap->ftm.supported)
1809                 return 0;
1810
1811         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1812         if (!ftm)
1813                 return -ENOBUFS;
1814
1815         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1816                 return -ENOBUFS;
1817         if (cap->ftm.non_asap &&
1818             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1819                 return -ENOBUFS;
1820         if (cap->ftm.request_lci &&
1821             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1822                 return -ENOBUFS;
1823         if (cap->ftm.request_civicloc &&
1824             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1825                 return -ENOBUFS;
1826         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1827                         cap->ftm.preambles))
1828                 return -ENOBUFS;
1829         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1830                         cap->ftm.bandwidths))
1831                 return -ENOBUFS;
1832         if (cap->ftm.max_bursts_exponent >= 0 &&
1833             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1834                         cap->ftm.max_bursts_exponent))
1835                 return -ENOBUFS;
1836         if (cap->ftm.max_ftms_per_burst &&
1837             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1838                         cap->ftm.max_ftms_per_burst))
1839                 return -ENOBUFS;
1840
1841         nla_nest_end(msg, ftm);
1842         return 0;
1843 }
1844
1845 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1846                                   struct sk_buff *msg)
1847 {
1848         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1849         struct nlattr *pmsr, *caps;
1850
1851         if (!cap)
1852                 return 0;
1853
1854         /*
1855          * we don't need to clean up anything here since the caller
1856          * will genlmsg_cancel() if we fail
1857          */
1858
1859         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1860         if (!pmsr)
1861                 return -ENOBUFS;
1862
1863         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1864                 return -ENOBUFS;
1865
1866         if (cap->report_ap_tsf &&
1867             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1868                 return -ENOBUFS;
1869
1870         if (cap->randomize_mac_addr &&
1871             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1872                 return -ENOBUFS;
1873
1874         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1875         if (!caps)
1876                 return -ENOBUFS;
1877
1878         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1879                 return -ENOBUFS;
1880
1881         nla_nest_end(msg, caps);
1882         nla_nest_end(msg, pmsr);
1883
1884         return 0;
1885 }
1886
1887 struct nl80211_dump_wiphy_state {
1888         s64 filter_wiphy;
1889         long start;
1890         long split_start, band_start, chan_start, capa_start;
1891         bool split;
1892 };
1893
1894 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1895                               enum nl80211_commands cmd,
1896                               struct sk_buff *msg, u32 portid, u32 seq,
1897                               int flags, struct nl80211_dump_wiphy_state *state)
1898 {
1899         void *hdr;
1900         struct nlattr *nl_bands, *nl_band;
1901         struct nlattr *nl_freqs, *nl_freq;
1902         struct nlattr *nl_cmds;
1903         enum nl80211_band band;
1904         struct ieee80211_channel *chan;
1905         int i;
1906         const struct ieee80211_txrx_stypes *mgmt_stypes =
1907                                 rdev->wiphy.mgmt_stypes;
1908         u32 features;
1909
1910         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1911         if (!hdr)
1912                 return -ENOBUFS;
1913
1914         if (WARN_ON(!state))
1915                 return -EINVAL;
1916
1917         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1918             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1919                            wiphy_name(&rdev->wiphy)) ||
1920             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1921                         cfg80211_rdev_list_generation))
1922                 goto nla_put_failure;
1923
1924         if (cmd != NL80211_CMD_NEW_WIPHY)
1925                 goto finish;
1926
1927         switch (state->split_start) {
1928         case 0:
1929                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1930                                rdev->wiphy.retry_short) ||
1931                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1932                                rdev->wiphy.retry_long) ||
1933                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1934                                 rdev->wiphy.frag_threshold) ||
1935                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1936                                 rdev->wiphy.rts_threshold) ||
1937                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1938                                rdev->wiphy.coverage_class) ||
1939                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1940                                rdev->wiphy.max_scan_ssids) ||
1941                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1942                                rdev->wiphy.max_sched_scan_ssids) ||
1943                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1944                                 rdev->wiphy.max_scan_ie_len) ||
1945                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1946                                 rdev->wiphy.max_sched_scan_ie_len) ||
1947                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1948                                rdev->wiphy.max_match_sets) ||
1949                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1950                                 rdev->wiphy.max_sched_scan_plans) ||
1951                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1952                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1953                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1954                                 rdev->wiphy.max_sched_scan_plan_iterations))
1955                         goto nla_put_failure;
1956
1957                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1958                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1959                         goto nla_put_failure;
1960                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1961                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1962                         goto nla_put_failure;
1963                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1964                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1965                         goto nla_put_failure;
1966                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1967                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1968                         goto nla_put_failure;
1969                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1970                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1971                         goto nla_put_failure;
1972                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1973                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1974                         goto nla_put_failure;
1975                 state->split_start++;
1976                 if (state->split)
1977                         break;
1978                 /* fall through */
1979         case 1:
1980                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1981                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1982                             rdev->wiphy.cipher_suites))
1983                         goto nla_put_failure;
1984
1985                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1986                                rdev->wiphy.max_num_pmkids))
1987                         goto nla_put_failure;
1988
1989                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1990                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1991                         goto nla_put_failure;
1992
1993                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1994                                 rdev->wiphy.available_antennas_tx) ||
1995                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1996                                 rdev->wiphy.available_antennas_rx))
1997                         goto nla_put_failure;
1998
1999                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2000                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2001                                 rdev->wiphy.probe_resp_offload))
2002                         goto nla_put_failure;
2003
2004                 if ((rdev->wiphy.available_antennas_tx ||
2005                      rdev->wiphy.available_antennas_rx) &&
2006                     rdev->ops->get_antenna) {
2007                         u32 tx_ant = 0, rx_ant = 0;
2008                         int res;
2009
2010                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2011                         if (!res) {
2012                                 if (nla_put_u32(msg,
2013                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2014                                                 tx_ant) ||
2015                                     nla_put_u32(msg,
2016                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2017                                                 rx_ant))
2018                                         goto nla_put_failure;
2019                         }
2020                 }
2021
2022                 state->split_start++;
2023                 if (state->split)
2024                         break;
2025                 /* fall through */
2026         case 2:
2027                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2028                                         rdev->wiphy.interface_modes))
2029                                 goto nla_put_failure;
2030                 state->split_start++;
2031                 if (state->split)
2032                         break;
2033                 /* fall through */
2034         case 3:
2035                 nl_bands = nla_nest_start_noflag(msg,
2036                                                  NL80211_ATTR_WIPHY_BANDS);
2037                 if (!nl_bands)
2038                         goto nla_put_failure;
2039
2040                 for (band = state->band_start;
2041                      band < NUM_NL80211_BANDS; band++) {
2042                         struct ieee80211_supported_band *sband;
2043
2044                         sband = rdev->wiphy.bands[band];
2045
2046                         if (!sband)
2047                                 continue;
2048
2049                         nl_band = nla_nest_start_noflag(msg, band);
2050                         if (!nl_band)
2051                                 goto nla_put_failure;
2052
2053                         switch (state->chan_start) {
2054                         case 0:
2055                                 if (nl80211_send_band_rateinfo(msg, sband))
2056                                         goto nla_put_failure;
2057                                 state->chan_start++;
2058                                 if (state->split)
2059                                         break;
2060                                 /* fall through */
2061                         default:
2062                                 /* add frequencies */
2063                                 nl_freqs = nla_nest_start_noflag(msg,
2064                                                                  NL80211_BAND_ATTR_FREQS);
2065                                 if (!nl_freqs)
2066                                         goto nla_put_failure;
2067
2068                                 for (i = state->chan_start - 1;
2069                                      i < sband->n_channels;
2070                                      i++) {
2071                                         nl_freq = nla_nest_start_noflag(msg,
2072                                                                         i);
2073                                         if (!nl_freq)
2074                                                 goto nla_put_failure;
2075
2076                                         chan = &sband->channels[i];
2077
2078                                         if (nl80211_msg_put_channel(
2079                                                         msg, &rdev->wiphy, chan,
2080                                                         state->split))
2081                                                 goto nla_put_failure;
2082
2083                                         nla_nest_end(msg, nl_freq);
2084                                         if (state->split)
2085                                                 break;
2086                                 }
2087                                 if (i < sband->n_channels)
2088                                         state->chan_start = i + 2;
2089                                 else
2090                                         state->chan_start = 0;
2091                                 nla_nest_end(msg, nl_freqs);
2092                         }
2093
2094                         nla_nest_end(msg, nl_band);
2095
2096                         if (state->split) {
2097                                 /* start again here */
2098                                 if (state->chan_start)
2099                                         band--;
2100                                 break;
2101                         }
2102                 }
2103                 nla_nest_end(msg, nl_bands);
2104
2105                 if (band < NUM_NL80211_BANDS)
2106                         state->band_start = band + 1;
2107                 else
2108                         state->band_start = 0;
2109
2110                 /* if bands & channels are done, continue outside */
2111                 if (state->band_start == 0 && state->chan_start == 0)
2112                         state->split_start++;
2113                 if (state->split)
2114                         break;
2115                 /* fall through */
2116         case 4:
2117                 nl_cmds = nla_nest_start_noflag(msg,
2118                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2119                 if (!nl_cmds)
2120                         goto nla_put_failure;
2121
2122                 i = nl80211_add_commands_unsplit(rdev, msg);
2123                 if (i < 0)
2124                         goto nla_put_failure;
2125                 if (state->split) {
2126                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2127                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2128                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2129                                 CMD(channel_switch, CHANNEL_SWITCH);
2130                         CMD(set_qos_map, SET_QOS_MAP);
2131                         if (rdev->wiphy.features &
2132                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2133                                 CMD(add_tx_ts, ADD_TX_TS);
2134                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2135                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2136                         CMD(update_ft_ies, UPDATE_FT_IES);
2137                 }
2138 #undef CMD
2139
2140                 nla_nest_end(msg, nl_cmds);
2141                 state->split_start++;
2142                 if (state->split)
2143                         break;
2144                 /* fall through */
2145         case 5:
2146                 if (rdev->ops->remain_on_channel &&
2147                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2148                     nla_put_u32(msg,
2149                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2150                                 rdev->wiphy.max_remain_on_channel_duration))
2151                         goto nla_put_failure;
2152
2153                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2154                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2155                         goto nla_put_failure;
2156
2157                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2158                         goto nla_put_failure;
2159                 state->split_start++;
2160                 if (state->split)
2161                         break;
2162                 /* fall through */
2163         case 6:
2164 #ifdef CONFIG_PM
2165                 if (nl80211_send_wowlan(msg, rdev, state->split))
2166                         goto nla_put_failure;
2167                 state->split_start++;
2168                 if (state->split)
2169                         break;
2170 #else
2171                 state->split_start++;
2172 #endif
2173                 /* fall through */
2174         case 7:
2175                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2176                                         rdev->wiphy.software_iftypes))
2177                         goto nla_put_failure;
2178
2179                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2180                                                    state->split))
2181                         goto nla_put_failure;
2182
2183                 state->split_start++;
2184                 if (state->split)
2185                         break;
2186                 /* fall through */
2187         case 8:
2188                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2189                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2190                                 rdev->wiphy.ap_sme_capa))
2191                         goto nla_put_failure;
2192
2193                 features = rdev->wiphy.features;
2194                 /*
2195                  * We can only add the per-channel limit information if the
2196                  * dump is split, otherwise it makes it too big. Therefore
2197                  * only advertise it in that case.
2198                  */
2199                 if (state->split)
2200                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2201                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2202                         goto nla_put_failure;
2203
2204                 if (rdev->wiphy.ht_capa_mod_mask &&
2205                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2206                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2207                             rdev->wiphy.ht_capa_mod_mask))
2208                         goto nla_put_failure;
2209
2210                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2211                     rdev->wiphy.max_acl_mac_addrs &&
2212                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2213                                 rdev->wiphy.max_acl_mac_addrs))
2214                         goto nla_put_failure;
2215
2216                 /*
2217                  * Any information below this point is only available to
2218                  * applications that can deal with it being split. This
2219                  * helps ensure that newly added capabilities don't break
2220                  * older tools by overrunning their buffers.
2221                  *
2222                  * We still increment split_start so that in the split
2223                  * case we'll continue with more data in the next round,
2224                  * but break unconditionally so unsplit data stops here.
2225                  */
2226                 state->split_start++;
2227                 break;
2228         case 9:
2229                 if (rdev->wiphy.extended_capabilities &&
2230                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2231                              rdev->wiphy.extended_capabilities_len,
2232                              rdev->wiphy.extended_capabilities) ||
2233                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2234                              rdev->wiphy.extended_capabilities_len,
2235                              rdev->wiphy.extended_capabilities_mask)))
2236                         goto nla_put_failure;
2237
2238                 if (rdev->wiphy.vht_capa_mod_mask &&
2239                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2240                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2241                             rdev->wiphy.vht_capa_mod_mask))
2242                         goto nla_put_failure;
2243
2244                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2245                             rdev->wiphy.perm_addr))
2246                         goto nla_put_failure;
2247
2248                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2249                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2250                             rdev->wiphy.addr_mask))
2251                         goto nla_put_failure;
2252
2253                 if (rdev->wiphy.n_addresses > 1) {
2254                         void *attr;
2255
2256                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2257                         if (!attr)
2258                                 goto nla_put_failure;
2259
2260                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2261                                 if (nla_put(msg, i + 1, ETH_ALEN,
2262                                             rdev->wiphy.addresses[i].addr))
2263                                         goto nla_put_failure;
2264
2265                         nla_nest_end(msg, attr);
2266                 }
2267
2268                 state->split_start++;
2269                 break;
2270         case 10:
2271                 if (nl80211_send_coalesce(msg, rdev))
2272                         goto nla_put_failure;
2273
2274                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2275                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2276                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2277                         goto nla_put_failure;
2278
2279                 if (rdev->wiphy.max_ap_assoc_sta &&
2280                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2281                                 rdev->wiphy.max_ap_assoc_sta))
2282                         goto nla_put_failure;
2283
2284                 state->split_start++;
2285                 break;
2286         case 11:
2287                 if (rdev->wiphy.n_vendor_commands) {
2288                         const struct nl80211_vendor_cmd_info *info;
2289                         struct nlattr *nested;
2290
2291                         nested = nla_nest_start_noflag(msg,
2292                                                        NL80211_ATTR_VENDOR_DATA);
2293                         if (!nested)
2294                                 goto nla_put_failure;
2295
2296                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2297                                 info = &rdev->wiphy.vendor_commands[i].info;
2298                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2299                                         goto nla_put_failure;
2300                         }
2301                         nla_nest_end(msg, nested);
2302                 }
2303
2304                 if (rdev->wiphy.n_vendor_events) {
2305                         const struct nl80211_vendor_cmd_info *info;
2306                         struct nlattr *nested;
2307
2308                         nested = nla_nest_start_noflag(msg,
2309                                                        NL80211_ATTR_VENDOR_EVENTS);
2310                         if (!nested)
2311                                 goto nla_put_failure;
2312
2313                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2314                                 info = &rdev->wiphy.vendor_events[i];
2315                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2316                                         goto nla_put_failure;
2317                         }
2318                         nla_nest_end(msg, nested);
2319                 }
2320                 state->split_start++;
2321                 break;
2322         case 12:
2323                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2324                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2325                                rdev->wiphy.max_num_csa_counters))
2326                         goto nla_put_failure;
2327
2328                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2329                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2330                         goto nla_put_failure;
2331
2332                 if (rdev->wiphy.max_sched_scan_reqs &&
2333                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2334                                 rdev->wiphy.max_sched_scan_reqs))
2335                         goto nla_put_failure;
2336
2337                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2338                             sizeof(rdev->wiphy.ext_features),
2339                             rdev->wiphy.ext_features))
2340                         goto nla_put_failure;
2341
2342                 if (rdev->wiphy.bss_select_support) {
2343                         struct nlattr *nested;
2344                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2345
2346                         nested = nla_nest_start_noflag(msg,
2347                                                        NL80211_ATTR_BSS_SELECT);
2348                         if (!nested)
2349                                 goto nla_put_failure;
2350
2351                         i = 0;
2352                         while (bss_select_support) {
2353                                 if ((bss_select_support & 1) &&
2354                                     nla_put_flag(msg, i))
2355                                         goto nla_put_failure;
2356                                 i++;
2357                                 bss_select_support >>= 1;
2358                         }
2359                         nla_nest_end(msg, nested);
2360                 }
2361
2362                 state->split_start++;
2363                 break;
2364         case 13:
2365                 if (rdev->wiphy.num_iftype_ext_capab &&
2366                     rdev->wiphy.iftype_ext_capab) {
2367                         struct nlattr *nested_ext_capab, *nested;
2368
2369                         nested = nla_nest_start_noflag(msg,
2370                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2371                         if (!nested)
2372                                 goto nla_put_failure;
2373
2374                         for (i = state->capa_start;
2375                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2376                                 const struct wiphy_iftype_ext_capab *capab;
2377
2378                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2379
2380                                 nested_ext_capab = nla_nest_start_noflag(msg,
2381                                                                          i);
2382                                 if (!nested_ext_capab ||
2383                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2384                                                 capab->iftype) ||
2385                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2386                                             capab->extended_capabilities_len,
2387                                             capab->extended_capabilities) ||
2388                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2389                                             capab->extended_capabilities_len,
2390                                             capab->extended_capabilities_mask))
2391                                         goto nla_put_failure;
2392
2393                                 nla_nest_end(msg, nested_ext_capab);
2394                                 if (state->split)
2395                                         break;
2396                         }
2397                         nla_nest_end(msg, nested);
2398                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2399                                 state->capa_start = i + 1;
2400                                 break;
2401                         }
2402                 }
2403
2404                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2405                                 rdev->wiphy.nan_supported_bands))
2406                         goto nla_put_failure;
2407
2408                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2409                                             NL80211_EXT_FEATURE_TXQS)) {
2410                         struct cfg80211_txq_stats txqstats = {};
2411                         int res;
2412
2413                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2414                         if (!res &&
2415                             !nl80211_put_txq_stats(msg, &txqstats,
2416                                                    NL80211_ATTR_TXQ_STATS))
2417                                 goto nla_put_failure;
2418
2419                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2420                                         rdev->wiphy.txq_limit))
2421                                 goto nla_put_failure;
2422                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2423                                         rdev->wiphy.txq_memory_limit))
2424                                 goto nla_put_failure;
2425                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2426                                         rdev->wiphy.txq_quantum))
2427                                 goto nla_put_failure;
2428                 }
2429
2430                 state->split_start++;
2431                 break;
2432         case 14:
2433                 if (nl80211_send_pmsr_capa(rdev, msg))
2434                         goto nla_put_failure;
2435
2436                 state->split_start++;
2437                 break;
2438         case 15:
2439                 if (rdev->wiphy.akm_suites &&
2440                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2441                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2442                             rdev->wiphy.akm_suites))
2443                         goto nla_put_failure;
2444
2445                 /* done */
2446                 state->split_start = 0;
2447                 break;
2448         }
2449  finish:
2450         genlmsg_end(msg, hdr);
2451         return 0;
2452
2453  nla_put_failure:
2454         genlmsg_cancel(msg, hdr);
2455         return -EMSGSIZE;
2456 }
2457
2458 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2459                                     struct netlink_callback *cb,
2460                                     struct nl80211_dump_wiphy_state *state)
2461 {
2462         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2463         int ret;
2464
2465         if (!tb)
2466                 return -ENOMEM;
2467
2468         ret = nlmsg_parse_deprecated(cb->nlh,
2469                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2470                                      tb, nl80211_fam.maxattr,
2471                                      nl80211_policy, NULL);
2472         /* ignore parse errors for backward compatibility */
2473         if (ret) {
2474                 ret = 0;
2475                 goto out;
2476         }
2477
2478         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2479         if (tb[NL80211_ATTR_WIPHY])
2480                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2481         if (tb[NL80211_ATTR_WDEV])
2482                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2483         if (tb[NL80211_ATTR_IFINDEX]) {
2484                 struct net_device *netdev;
2485                 struct cfg80211_registered_device *rdev;
2486                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2487
2488                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2489                 if (!netdev) {
2490                         ret = -ENODEV;
2491                         goto out;
2492                 }
2493                 if (netdev->ieee80211_ptr) {
2494                         rdev = wiphy_to_rdev(
2495                                 netdev->ieee80211_ptr->wiphy);
2496                         state->filter_wiphy = rdev->wiphy_idx;
2497                 }
2498         }
2499
2500         ret = 0;
2501 out:
2502         kfree(tb);
2503         return ret;
2504 }
2505
2506 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2507 {
2508         int idx = 0, ret;
2509         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2510         struct cfg80211_registered_device *rdev;
2511
2512         rtnl_lock();
2513         if (!state) {
2514                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2515                 if (!state) {
2516                         rtnl_unlock();
2517                         return -ENOMEM;
2518                 }
2519                 state->filter_wiphy = -1;
2520                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2521                 if (ret) {
2522                         kfree(state);
2523                         rtnl_unlock();
2524                         return ret;
2525                 }
2526                 cb->args[0] = (long)state;
2527         }
2528
2529         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2530                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2531                         continue;
2532                 if (++idx <= state->start)
2533                         continue;
2534                 if (state->filter_wiphy != -1 &&
2535                     state->filter_wiphy != rdev->wiphy_idx)
2536                         continue;
2537                 /* attempt to fit multiple wiphy data chunks into the skb */
2538                 do {
2539                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2540                                                  skb,
2541                                                  NETLINK_CB(cb->skb).portid,
2542                                                  cb->nlh->nlmsg_seq,
2543                                                  NLM_F_MULTI, state);
2544                         if (ret < 0) {
2545                                 /*
2546                                  * If sending the wiphy data didn't fit (ENOBUFS
2547                                  * or EMSGSIZE returned), this SKB is still
2548                                  * empty (so it's not too big because another
2549                                  * wiphy dataset is already in the skb) and
2550                                  * we've not tried to adjust the dump allocation
2551                                  * yet ... then adjust the alloc size to be
2552                                  * bigger, and return 1 but with the empty skb.
2553                                  * This results in an empty message being RX'ed
2554                                  * in userspace, but that is ignored.
2555                                  *
2556                                  * We can then retry with the larger buffer.
2557                                  */
2558                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2559                                     !skb->len && !state->split &&
2560                                     cb->min_dump_alloc < 4096) {
2561                                         cb->min_dump_alloc = 4096;
2562                                         state->split_start = 0;
2563                                         rtnl_unlock();
2564                                         return 1;
2565                                 }
2566                                 idx--;
2567                                 break;
2568                         }
2569                 } while (state->split_start > 0);
2570                 break;
2571         }
2572         rtnl_unlock();
2573
2574         state->start = idx;
2575
2576         return skb->len;
2577 }
2578
2579 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2580 {
2581         kfree((void *)cb->args[0]);
2582         return 0;
2583 }
2584
2585 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2586 {
2587         struct sk_buff *msg;
2588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2589         struct nl80211_dump_wiphy_state state = {};
2590
2591         msg = nlmsg_new(4096, GFP_KERNEL);
2592         if (!msg)
2593                 return -ENOMEM;
2594
2595         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2596                                info->snd_portid, info->snd_seq, 0,
2597                                &state) < 0) {
2598                 nlmsg_free(msg);
2599                 return -ENOBUFS;
2600         }
2601
2602         return genlmsg_reply(msg, info);
2603 }
2604
2605 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2606         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2607         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2608         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2609         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2610         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2611 };
2612
2613 static int parse_txq_params(struct nlattr *tb[],
2614                             struct ieee80211_txq_params *txq_params)
2615 {
2616         u8 ac;
2617
2618         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2619             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2620             !tb[NL80211_TXQ_ATTR_AIFS])
2621                 return -EINVAL;
2622
2623         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2624         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2625         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2626         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2627         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2628
2629         if (ac >= NL80211_NUM_ACS)
2630                 return -EINVAL;
2631         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2632         return 0;
2633 }
2634
2635 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2636 {
2637         /*
2638          * You can only set the channel explicitly for WDS interfaces,
2639          * all others have their channel managed via their respective
2640          * "establish a connection" command (connect, join, ...)
2641          *
2642          * For AP/GO and mesh mode, the channel can be set with the
2643          * channel userspace API, but is only stored and passed to the
2644          * low-level driver when the AP starts or the mesh is joined.
2645          * This is for backward compatibility, userspace can also give
2646          * the channel in the start-ap or join-mesh commands instead.
2647          *
2648          * Monitors are special as they are normally slaved to
2649          * whatever else is going on, so they have their own special
2650          * operation to set the monitor channel if possible.
2651          */
2652         return !wdev ||
2653                 wdev->iftype == NL80211_IFTYPE_AP ||
2654                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2655                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2656                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2657 }
2658
2659 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2660                           struct genl_info *info,
2661                           struct cfg80211_chan_def *chandef)
2662 {
2663         struct netlink_ext_ack *extack = info->extack;
2664         struct nlattr **attrs = info->attrs;
2665         u32 control_freq;
2666
2667         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2668                 return -EINVAL;
2669
2670         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2671
2672         memset(chandef, 0, sizeof(*chandef));
2673
2674         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2675         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2676         chandef->center_freq1 = control_freq;
2677         chandef->center_freq2 = 0;
2678
2679         /* Primary channel not allowed */
2680         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2681                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2682                                     "Channel is disabled");
2683                 return -EINVAL;
2684         }
2685
2686         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2687                 enum nl80211_channel_type chantype;
2688
2689                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2690
2691                 switch (chantype) {
2692                 case NL80211_CHAN_NO_HT:
2693                 case NL80211_CHAN_HT20:
2694                 case NL80211_CHAN_HT40PLUS:
2695                 case NL80211_CHAN_HT40MINUS:
2696                         cfg80211_chandef_create(chandef, chandef->chan,
2697                                                 chantype);
2698                         /* user input for center_freq is incorrect */
2699                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2700                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2701                                 NL_SET_ERR_MSG_ATTR(extack,
2702                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2703                                                     "bad center frequency 1");
2704                                 return -EINVAL;
2705                         }
2706                         /* center_freq2 must be zero */
2707                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2708                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2709                                 NL_SET_ERR_MSG_ATTR(extack,
2710                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2711                                                     "center frequency 2 can't be used");
2712                                 return -EINVAL;
2713                         }
2714                         break;
2715                 default:
2716                         NL_SET_ERR_MSG_ATTR(extack,
2717                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2718                                             "invalid channel type");
2719                         return -EINVAL;
2720                 }
2721         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2722                 chandef->width =
2723                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2724                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2725                         chandef->center_freq1 =
2726                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2727                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2728                         chandef->center_freq2 =
2729                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2730         }
2731
2732         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2733                 chandef->edmg.channels =
2734                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2735
2736                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2737                         chandef->edmg.bw_config =
2738                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2739         } else {
2740                 chandef->edmg.bw_config = 0;
2741                 chandef->edmg.channels = 0;
2742         }
2743
2744         if (!cfg80211_chandef_valid(chandef)) {
2745                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2746                 return -EINVAL;
2747         }
2748
2749         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2750                                      IEEE80211_CHAN_DISABLED)) {
2751                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2752                 return -EINVAL;
2753         }
2754
2755         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2756              chandef->width == NL80211_CHAN_WIDTH_10) &&
2757             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2758                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2759                 return -EINVAL;
2760         }
2761
2762         return 0;
2763 }
2764
2765 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2766                                  struct net_device *dev,
2767                                  struct genl_info *info)
2768 {
2769         struct cfg80211_chan_def chandef;
2770         int result;
2771         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2772         struct wireless_dev *wdev = NULL;
2773
2774         if (dev)
2775                 wdev = dev->ieee80211_ptr;
2776         if (!nl80211_can_set_dev_channel(wdev))
2777                 return -EOPNOTSUPP;
2778         if (wdev)
2779                 iftype = wdev->iftype;
2780
2781         result = nl80211_parse_chandef(rdev, info, &chandef);
2782         if (result)
2783                 return result;
2784
2785         switch (iftype) {
2786         case NL80211_IFTYPE_AP:
2787         case NL80211_IFTYPE_P2P_GO:
2788                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2789                                                    iftype)) {
2790                         result = -EINVAL;
2791                         break;
2792                 }
2793                 if (wdev->beacon_interval) {
2794                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2795                             !(rdev->wiphy.features &
2796                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2797                                 result = -EBUSY;
2798                                 break;
2799                         }
2800
2801                         /* Only allow dynamic channel width changes */
2802                         if (chandef.chan != wdev->preset_chandef.chan) {
2803                                 result = -EBUSY;
2804                                 break;
2805                         }
2806                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2807                         if (result)
2808                                 break;
2809                 }
2810                 wdev->preset_chandef = chandef;
2811                 result = 0;
2812                 break;
2813         case NL80211_IFTYPE_MESH_POINT:
2814                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2815                 break;
2816         case NL80211_IFTYPE_MONITOR:
2817                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2818                 break;
2819         default:
2820                 result = -EINVAL;
2821         }
2822
2823         return result;
2824 }
2825
2826 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2827 {
2828         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2829         struct net_device *netdev = info->user_ptr[1];
2830
2831         return __nl80211_set_channel(rdev, netdev, info);
2832 }
2833
2834 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2835 {
2836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2837         struct net_device *dev = info->user_ptr[1];
2838         struct wireless_dev *wdev = dev->ieee80211_ptr;
2839         const u8 *bssid;
2840
2841         if (!info->attrs[NL80211_ATTR_MAC])
2842                 return -EINVAL;
2843
2844         if (netif_running(dev))
2845                 return -EBUSY;
2846
2847         if (!rdev->ops->set_wds_peer)
2848                 return -EOPNOTSUPP;
2849
2850         if (wdev->iftype != NL80211_IFTYPE_WDS)
2851                 return -EOPNOTSUPP;
2852
2853         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2854         return rdev_set_wds_peer(rdev, dev, bssid);
2855 }
2856
2857 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2858 {
2859         struct cfg80211_registered_device *rdev;
2860         struct net_device *netdev = NULL;
2861         struct wireless_dev *wdev;
2862         int result = 0, rem_txq_params = 0;
2863         struct nlattr *nl_txq_params;
2864         u32 changed;
2865         u8 retry_short = 0, retry_long = 0;
2866         u32 frag_threshold = 0, rts_threshold = 0;
2867         u8 coverage_class = 0;
2868         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2869
2870         ASSERT_RTNL();
2871
2872         /*
2873          * Try to find the wiphy and netdev. Normally this
2874          * function shouldn't need the netdev, but this is
2875          * done for backward compatibility -- previously
2876          * setting the channel was done per wiphy, but now
2877          * it is per netdev. Previous userland like hostapd
2878          * also passed a netdev to set_wiphy, so that it is
2879          * possible to let that go to the right netdev!
2880          */
2881
2882         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2883                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2884
2885                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2886                 if (netdev && netdev->ieee80211_ptr)
2887                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2888                 else
2889                         netdev = NULL;
2890         }
2891
2892         if (!netdev) {
2893                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2894                                                   info->attrs);
2895                 if (IS_ERR(rdev))
2896                         return PTR_ERR(rdev);
2897                 wdev = NULL;
2898                 netdev = NULL;
2899                 result = 0;
2900         } else
2901                 wdev = netdev->ieee80211_ptr;
2902
2903         /*
2904          * end workaround code, by now the rdev is available
2905          * and locked, and wdev may or may not be NULL.
2906          */
2907
2908         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2909                 result = cfg80211_dev_rename(
2910                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2911
2912         if (result)
2913                 return result;
2914
2915         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2916                 struct ieee80211_txq_params txq_params;
2917                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2918
2919                 if (!rdev->ops->set_txq_params)
2920                         return -EOPNOTSUPP;
2921
2922                 if (!netdev)
2923                         return -EINVAL;
2924
2925                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2926                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2927                         return -EINVAL;
2928
2929                 if (!netif_running(netdev))
2930                         return -ENETDOWN;
2931
2932                 nla_for_each_nested(nl_txq_params,
2933                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2934                                     rem_txq_params) {
2935                         result = nla_parse_nested_deprecated(tb,
2936                                                              NL80211_TXQ_ATTR_MAX,
2937                                                              nl_txq_params,
2938                                                              txq_params_policy,
2939                                                              info->extack);
2940                         if (result)
2941                                 return result;
2942                         result = parse_txq_params(tb, &txq_params);
2943                         if (result)
2944                                 return result;
2945
2946                         result = rdev_set_txq_params(rdev, netdev,
2947                                                      &txq_params);
2948                         if (result)
2949                                 return result;
2950                 }
2951         }
2952
2953         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2954                 result = __nl80211_set_channel(
2955                         rdev,
2956                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2957                         info);
2958                 if (result)
2959                         return result;
2960         }
2961
2962         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2963                 struct wireless_dev *txp_wdev = wdev;
2964                 enum nl80211_tx_power_setting type;
2965                 int idx, mbm = 0;
2966
2967                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2968                         txp_wdev = NULL;
2969
2970                 if (!rdev->ops->set_tx_power)
2971                         return -EOPNOTSUPP;
2972
2973                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2974                 type = nla_get_u32(info->attrs[idx]);
2975
2976                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2977                     (type != NL80211_TX_POWER_AUTOMATIC))
2978                         return -EINVAL;
2979
2980                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2981                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2982                         mbm = nla_get_u32(info->attrs[idx]);
2983                 }
2984
2985                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2986                 if (result)
2987                         return result;
2988         }
2989
2990         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2991             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2992                 u32 tx_ant, rx_ant;
2993
2994                 if ((!rdev->wiphy.available_antennas_tx &&
2995                      !rdev->wiphy.available_antennas_rx) ||
2996                     !rdev->ops->set_antenna)
2997                         return -EOPNOTSUPP;
2998
2999                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3000                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3001
3002                 /* reject antenna configurations which don't match the
3003                  * available antenna masks, except for the "all" mask */
3004                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3005                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3006                         return -EINVAL;
3007
3008                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3009                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3010
3011                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3012                 if (result)
3013                         return result;
3014         }
3015
3016         changed = 0;
3017
3018         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3019                 retry_short = nla_get_u8(
3020                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3021
3022                 changed |= WIPHY_PARAM_RETRY_SHORT;
3023         }
3024
3025         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3026                 retry_long = nla_get_u8(
3027                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3028
3029                 changed |= WIPHY_PARAM_RETRY_LONG;
3030         }
3031
3032         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3033                 frag_threshold = nla_get_u32(
3034                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3035                 if (frag_threshold < 256)
3036                         return -EINVAL;
3037
3038                 if (frag_threshold != (u32) -1) {
3039                         /*
3040                          * Fragments (apart from the last one) are required to
3041                          * have even length. Make the fragmentation code
3042                          * simpler by stripping LSB should someone try to use
3043                          * odd threshold value.
3044                          */
3045                         frag_threshold &= ~0x1;
3046                 }
3047                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3048         }
3049
3050         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3051                 rts_threshold = nla_get_u32(
3052                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3053                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3054         }
3055
3056         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3057                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3058                         return -EINVAL;
3059
3060                 coverage_class = nla_get_u8(
3061                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3062                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3063         }
3064
3065         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3066                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3067                         return -EOPNOTSUPP;
3068
3069                 changed |= WIPHY_PARAM_DYN_ACK;
3070         }
3071
3072         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3073                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3074                                              NL80211_EXT_FEATURE_TXQS))
3075                         return -EOPNOTSUPP;
3076                 txq_limit = nla_get_u32(
3077                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3078                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3079         }
3080
3081         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3082                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3083                                              NL80211_EXT_FEATURE_TXQS))
3084                         return -EOPNOTSUPP;
3085                 txq_memory_limit = nla_get_u32(
3086                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3087                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3088         }
3089
3090         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3091                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3092                                              NL80211_EXT_FEATURE_TXQS))
3093                         return -EOPNOTSUPP;
3094                 txq_quantum = nla_get_u32(
3095                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3096                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3097         }
3098
3099         if (changed) {
3100                 u8 old_retry_short, old_retry_long;
3101                 u32 old_frag_threshold, old_rts_threshold;
3102                 u8 old_coverage_class;
3103                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3104
3105                 if (!rdev->ops->set_wiphy_params)
3106                         return -EOPNOTSUPP;
3107
3108                 old_retry_short = rdev->wiphy.retry_short;
3109                 old_retry_long = rdev->wiphy.retry_long;
3110                 old_frag_threshold = rdev->wiphy.frag_threshold;
3111                 old_rts_threshold = rdev->wiphy.rts_threshold;
3112                 old_coverage_class = rdev->wiphy.coverage_class;
3113                 old_txq_limit = rdev->wiphy.txq_limit;
3114                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3115                 old_txq_quantum = rdev->wiphy.txq_quantum;
3116
3117                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3118                         rdev->wiphy.retry_short = retry_short;
3119                 if (changed & WIPHY_PARAM_RETRY_LONG)
3120                         rdev->wiphy.retry_long = retry_long;
3121                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3122                         rdev->wiphy.frag_threshold = frag_threshold;
3123                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3124                         rdev->wiphy.rts_threshold = rts_threshold;
3125                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3126                         rdev->wiphy.coverage_class = coverage_class;
3127                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3128                         rdev->wiphy.txq_limit = txq_limit;
3129                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3130                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3131                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3132                         rdev->wiphy.txq_quantum = txq_quantum;
3133
3134                 result = rdev_set_wiphy_params(rdev, changed);
3135                 if (result) {
3136                         rdev->wiphy.retry_short = old_retry_short;
3137                         rdev->wiphy.retry_long = old_retry_long;
3138                         rdev->wiphy.frag_threshold = old_frag_threshold;
3139                         rdev->wiphy.rts_threshold = old_rts_threshold;
3140                         rdev->wiphy.coverage_class = old_coverage_class;
3141                         rdev->wiphy.txq_limit = old_txq_limit;
3142                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3143                         rdev->wiphy.txq_quantum = old_txq_quantum;
3144                         return result;
3145                 }
3146         }
3147         return 0;
3148 }
3149
3150 static int nl80211_send_chandef(struct sk_buff *msg,
3151                                 const struct cfg80211_chan_def *chandef)
3152 {
3153         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3154                 return -EINVAL;
3155
3156         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3157                         chandef->chan->center_freq))
3158                 return -ENOBUFS;
3159         switch (chandef->width) {
3160         case NL80211_CHAN_WIDTH_20_NOHT:
3161         case NL80211_CHAN_WIDTH_20:
3162         case NL80211_CHAN_WIDTH_40:
3163                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3164                                 cfg80211_get_chandef_type(chandef)))
3165                         return -ENOBUFS;
3166                 break;
3167         default:
3168                 break;
3169         }
3170         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3171                 return -ENOBUFS;
3172         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3173                 return -ENOBUFS;
3174         if (chandef->center_freq2 &&
3175             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3176                 return -ENOBUFS;
3177         return 0;
3178 }
3179
3180 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3181                               struct cfg80211_registered_device *rdev,
3182                               struct wireless_dev *wdev,
3183                               enum nl80211_commands cmd)
3184 {
3185         struct net_device *dev = wdev->netdev;
3186         void *hdr;
3187
3188         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3189                 cmd != NL80211_CMD_DEL_INTERFACE &&
3190                 cmd != NL80211_CMD_SET_INTERFACE);
3191
3192         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3193         if (!hdr)
3194                 return -1;
3195
3196         if (dev &&
3197             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3198              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3199                 goto nla_put_failure;
3200
3201         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3202             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3203             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3204                               NL80211_ATTR_PAD) ||
3205             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3206             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3207                         rdev->devlist_generation ^
3208                         (cfg80211_rdev_list_generation << 2)) ||
3209             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3210                 goto nla_put_failure;
3211
3212         if (rdev->ops->get_channel) {
3213                 int ret;
3214                 struct cfg80211_chan_def chandef = {};
3215
3216                 ret = rdev_get_channel(rdev, wdev, &chandef);
3217                 if (ret == 0) {
3218                         if (nl80211_send_chandef(msg, &chandef))
3219                                 goto nla_put_failure;
3220                 }
3221         }
3222
3223         if (rdev->ops->get_tx_power) {
3224                 int dbm, ret;
3225
3226                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3227                 if (ret == 0 &&
3228                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3229                                 DBM_TO_MBM(dbm)))
3230                         goto nla_put_failure;
3231         }
3232
3233         wdev_lock(wdev);
3234         switch (wdev->iftype) {
3235         case NL80211_IFTYPE_AP:
3236                 if (wdev->ssid_len &&
3237                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3238                         goto nla_put_failure_locked;
3239                 break;
3240         case NL80211_IFTYPE_STATION:
3241         case NL80211_IFTYPE_P2P_CLIENT:
3242         case NL80211_IFTYPE_ADHOC: {
3243                 const u8 *ssid_ie;
3244                 if (!wdev->current_bss)
3245                         break;
3246                 rcu_read_lock();
3247                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3248                                                WLAN_EID_SSID);
3249                 if (ssid_ie &&
3250                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3251                         goto nla_put_failure_rcu_locked;
3252                 rcu_read_unlock();
3253                 break;
3254                 }
3255         default:
3256                 /* nothing */
3257                 break;
3258         }
3259         wdev_unlock(wdev);
3260
3261         if (rdev->ops->get_txq_stats) {
3262                 struct cfg80211_txq_stats txqstats = {};
3263                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3264
3265                 if (ret == 0 &&
3266                     !nl80211_put_txq_stats(msg, &txqstats,
3267                                            NL80211_ATTR_TXQ_STATS))
3268                         goto nla_put_failure;
3269         }
3270
3271         genlmsg_end(msg, hdr);
3272         return 0;
3273
3274  nla_put_failure_rcu_locked:
3275         rcu_read_unlock();
3276  nla_put_failure_locked:
3277         wdev_unlock(wdev);
3278  nla_put_failure:
3279         genlmsg_cancel(msg, hdr);
3280         return -EMSGSIZE;
3281 }
3282
3283 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3284 {
3285         int wp_idx = 0;
3286         int if_idx = 0;
3287         int wp_start = cb->args[0];
3288         int if_start = cb->args[1];
3289         int filter_wiphy = -1;
3290         struct cfg80211_registered_device *rdev;
3291         struct wireless_dev *wdev;
3292         int ret;
3293
3294         rtnl_lock();
3295         if (!cb->args[2]) {
3296                 struct nl80211_dump_wiphy_state state = {
3297                         .filter_wiphy = -1,
3298                 };
3299
3300                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3301                 if (ret)
3302                         goto out_unlock;
3303
3304                 filter_wiphy = state.filter_wiphy;
3305
3306                 /*
3307                  * if filtering, set cb->args[2] to +1 since 0 is the default
3308                  * value needed to determine that parsing is necessary.
3309                  */
3310                 if (filter_wiphy >= 0)
3311                         cb->args[2] = filter_wiphy + 1;
3312                 else
3313                         cb->args[2] = -1;
3314         } else if (cb->args[2] > 0) {
3315                 filter_wiphy = cb->args[2] - 1;
3316         }
3317
3318         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3319                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3320                         continue;
3321                 if (wp_idx < wp_start) {
3322                         wp_idx++;
3323                         continue;
3324                 }
3325
3326                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3327                         continue;
3328
3329                 if_idx = 0;
3330
3331                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3332                         if (if_idx < if_start) {
3333                                 if_idx++;
3334                                 continue;
3335                         }
3336                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3337                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3338                                                rdev, wdev,
3339                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3340                                 goto out;
3341                         }
3342                         if_idx++;
3343                 }
3344
3345                 wp_idx++;
3346         }
3347  out:
3348         cb->args[0] = wp_idx;
3349         cb->args[1] = if_idx;
3350
3351         ret = skb->len;
3352  out_unlock:
3353         rtnl_unlock();
3354
3355         return ret;
3356 }
3357
3358 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3359 {
3360         struct sk_buff *msg;
3361         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3362         struct wireless_dev *wdev = info->user_ptr[1];
3363
3364         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3365         if (!msg)
3366                 return -ENOMEM;
3367
3368         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3369                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3370                 nlmsg_free(msg);
3371                 return -ENOBUFS;
3372         }
3373
3374         return genlmsg_reply(msg, info);
3375 }
3376
3377 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3378         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3379         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3380         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3381         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3382         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3383         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3384 };
3385
3386 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3387 {
3388         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3389         int flag;
3390
3391         *mntrflags = 0;
3392
3393         if (!nla)
3394                 return -EINVAL;
3395
3396         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3397                 return -EINVAL;
3398
3399         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3400                 if (flags[flag])
3401                         *mntrflags |= (1<<flag);
3402
3403         *mntrflags |= MONITOR_FLAG_CHANGED;
3404
3405         return 0;
3406 }
3407
3408 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3409                                      enum nl80211_iftype type,
3410                                      struct genl_info *info,
3411                                      struct vif_params *params)
3412 {
3413         bool change = false;
3414         int err;
3415
3416         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3417                 if (type != NL80211_IFTYPE_MONITOR)
3418                         return -EINVAL;
3419
3420                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3421                                           &params->flags);
3422                 if (err)
3423                         return err;
3424
3425                 change = true;
3426         }
3427
3428         if (params->flags & MONITOR_FLAG_ACTIVE &&
3429             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3430                 return -EOPNOTSUPP;
3431
3432         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3433                 const u8 *mumimo_groups;
3434                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3435
3436                 if (type != NL80211_IFTYPE_MONITOR)
3437                         return -EINVAL;
3438
3439                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3440                         return -EOPNOTSUPP;
3441
3442                 mumimo_groups =
3443                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3444
3445                 /* bits 0 and 63 are reserved and must be zero */
3446                 if ((mumimo_groups[0] & BIT(0)) ||
3447                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3448                         return -EINVAL;
3449
3450                 params->vht_mumimo_groups = mumimo_groups;
3451                 change = true;
3452         }
3453
3454         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3455                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3456
3457                 if (type != NL80211_IFTYPE_MONITOR)
3458                         return -EINVAL;
3459
3460                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3461                         return -EOPNOTSUPP;
3462
3463                 params->vht_mumimo_follow_addr =
3464                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3465                 change = true;
3466         }
3467
3468         return change ? 1 : 0;
3469 }
3470
3471 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3472                                struct net_device *netdev, u8 use_4addr,
3473                                enum nl80211_iftype iftype)
3474 {
3475         if (!use_4addr) {
3476                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3477                         return -EBUSY;
3478                 return 0;
3479         }
3480
3481         switch (iftype) {
3482         case NL80211_IFTYPE_AP_VLAN:
3483                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3484                         return 0;
3485                 break;
3486         case NL80211_IFTYPE_STATION:
3487                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3488                         return 0;
3489                 break;
3490         default:
3491                 break;
3492         }
3493
3494         return -EOPNOTSUPP;
3495 }
3496
3497 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3498 {
3499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3500         struct vif_params params;
3501         int err;
3502         enum nl80211_iftype otype, ntype;
3503         struct net_device *dev = info->user_ptr[1];
3504         bool change = false;
3505
3506         memset(&params, 0, sizeof(params));
3507
3508         otype = ntype = dev->ieee80211_ptr->iftype;
3509
3510         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3511                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3512                 if (otype != ntype)
3513                         change = true;
3514         }
3515
3516         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3517                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3518
3519                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3520                         return -EINVAL;
3521                 if (netif_running(dev))
3522                         return -EBUSY;
3523
3524                 wdev_lock(wdev);
3525                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3526                              IEEE80211_MAX_MESH_ID_LEN);
3527                 wdev->mesh_id_up_len =
3528                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3529                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3530                        wdev->mesh_id_up_len);
3531                 wdev_unlock(wdev);
3532         }
3533
3534         if (info->attrs[NL80211_ATTR_4ADDR]) {
3535                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3536                 change = true;
3537                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3538                 if (err)
3539                         return err;
3540         } else {
3541                 params.use_4addr = -1;
3542         }
3543
3544         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3545         if (err < 0)
3546                 return err;
3547         if (err > 0)
3548                 change = true;
3549
3550         if (change)
3551                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3552         else
3553                 err = 0;
3554
3555         if (!err && params.use_4addr != -1)
3556                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3557
3558         if (change && !err) {
3559                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3560
3561                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3562         }
3563
3564         return err;
3565 }
3566
3567 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3568 {
3569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3570         struct vif_params params;
3571         struct wireless_dev *wdev;
3572         struct sk_buff *msg;
3573         int err;
3574         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3575
3576         /* to avoid failing a new interface creation due to pending removal */
3577         cfg80211_destroy_ifaces(rdev);
3578
3579         memset(&params, 0, sizeof(params));
3580
3581         if (!info->attrs[NL80211_ATTR_IFNAME])
3582                 return -EINVAL;
3583
3584         if (info->attrs[NL80211_ATTR_IFTYPE])
3585                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3586
3587         if (!rdev->ops->add_virtual_intf)
3588                 return -EOPNOTSUPP;
3589
3590         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3591              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3592             info->attrs[NL80211_ATTR_MAC]) {
3593                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3594                            ETH_ALEN);
3595                 if (!is_valid_ether_addr(params.macaddr))
3596                         return -EADDRNOTAVAIL;
3597         }
3598
3599         if (info->attrs[NL80211_ATTR_4ADDR]) {
3600                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3601                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3602                 if (err)
3603                         return err;
3604         }
3605
3606         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3607                 return -EOPNOTSUPP;
3608
3609         err = nl80211_parse_mon_options(rdev, type, info, &params);
3610         if (err < 0)
3611                 return err;
3612
3613         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3614         if (!msg)
3615                 return -ENOMEM;
3616
3617         wdev = rdev_add_virtual_intf(rdev,
3618                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3619                                 NET_NAME_USER, type, &params);
3620         if (WARN_ON(!wdev)) {
3621                 nlmsg_free(msg);
3622                 return -EPROTO;
3623         } else if (IS_ERR(wdev)) {
3624                 nlmsg_free(msg);
3625                 return PTR_ERR(wdev);
3626         }
3627
3628         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3629                 wdev->owner_nlportid = info->snd_portid;
3630
3631         switch (type) {
3632         case NL80211_IFTYPE_MESH_POINT:
3633                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3634                         break;
3635                 wdev_lock(wdev);
3636                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3637                              IEEE80211_MAX_MESH_ID_LEN);
3638                 wdev->mesh_id_up_len =
3639                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3640                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3641                        wdev->mesh_id_up_len);
3642                 wdev_unlock(wdev);
3643                 break;
3644         case NL80211_IFTYPE_NAN:
3645         case NL80211_IFTYPE_P2P_DEVICE:
3646                 /*
3647                  * P2P Device and NAN do not have a netdev, so don't go
3648                  * through the netdev notifier and must be added here
3649                  */
3650                 cfg80211_init_wdev(rdev, wdev);
3651                 break;
3652         default:
3653                 break;
3654         }
3655
3656         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3657                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3658                 nlmsg_free(msg);
3659                 return -ENOBUFS;
3660         }
3661
3662         return genlmsg_reply(msg, info);
3663 }
3664
3665 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3666 {
3667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3668         struct wireless_dev *wdev = info->user_ptr[1];
3669
3670         if (!rdev->ops->del_virtual_intf)
3671                 return -EOPNOTSUPP;
3672
3673         /*
3674          * If we remove a wireless device without a netdev then clear
3675          * user_ptr[1] so that nl80211_post_doit won't dereference it
3676          * to check if it needs to do dev_put(). Otherwise it crashes
3677          * since the wdev has been freed, unlike with a netdev where
3678          * we need the dev_put() for the netdev to really be freed.
3679          */
3680         if (!wdev->netdev)
3681                 info->user_ptr[1] = NULL;
3682
3683         return rdev_del_virtual_intf(rdev, wdev);
3684 }
3685
3686 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3687 {
3688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3689         struct net_device *dev = info->user_ptr[1];
3690         u16 noack_map;
3691
3692         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3693                 return -EINVAL;
3694
3695         if (!rdev->ops->set_noack_map)
3696                 return -EOPNOTSUPP;
3697
3698         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3699
3700         return rdev_set_noack_map(rdev, dev, noack_map);
3701 }
3702
3703 struct get_key_cookie {
3704         struct sk_buff *msg;
3705         int error;
3706         int idx;
3707 };
3708
3709 static void get_key_callback(void *c, struct key_params *params)
3710 {
3711         struct nlattr *key;
3712         struct get_key_cookie *cookie = c;
3713
3714         if ((params->key &&
3715              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3716                      params->key_len, params->key)) ||
3717             (params->seq &&
3718              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3719                      params->seq_len, params->seq)) ||
3720             (params->cipher &&
3721              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3722                          params->cipher)))
3723                 goto nla_put_failure;
3724
3725         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3726         if (!key)
3727                 goto nla_put_failure;
3728
3729         if ((params->key &&
3730              nla_put(cookie->msg, NL80211_KEY_DATA,
3731                      params->key_len, params->key)) ||
3732             (params->seq &&
3733              nla_put(cookie->msg, NL80211_KEY_SEQ,
3734                      params->seq_len, params->seq)) ||
3735             (params->cipher &&
3736              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3737                          params->cipher)))
3738                 goto nla_put_failure;
3739
3740         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3741                 goto nla_put_failure;
3742
3743         nla_nest_end(cookie->msg, key);
3744
3745         return;
3746  nla_put_failure:
3747         cookie->error = 1;
3748 }
3749
3750 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3751 {
3752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3753         int err;
3754         struct net_device *dev = info->user_ptr[1];
3755         u8 key_idx = 0;
3756         const u8 *mac_addr = NULL;
3757         bool pairwise;
3758         struct get_key_cookie cookie = {
3759                 .error = 0,
3760         };
3761         void *hdr;
3762         struct sk_buff *msg;
3763
3764         if (info->attrs[NL80211_ATTR_KEY_IDX])
3765                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3766
3767         if (info->attrs[NL80211_ATTR_MAC])
3768                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3769
3770         pairwise = !!mac_addr;
3771         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3772                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3773
3774                 if (kt != NL80211_KEYTYPE_GROUP &&
3775                     kt != NL80211_KEYTYPE_PAIRWISE)
3776                         return -EINVAL;
3777                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3778         }
3779
3780         if (!rdev->ops->get_key)
3781                 return -EOPNOTSUPP;
3782
3783         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3784                 return -ENOENT;
3785
3786         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3787         if (!msg)
3788                 return -ENOMEM;
3789
3790         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3791                              NL80211_CMD_NEW_KEY);
3792         if (!hdr)
3793                 goto nla_put_failure;
3794
3795         cookie.msg = msg;
3796         cookie.idx = key_idx;
3797
3798         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3799             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3800                 goto nla_put_failure;
3801         if (mac_addr &&
3802             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3803                 goto nla_put_failure;
3804
3805         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3806                            get_key_callback);
3807
3808         if (err)
3809                 goto free_msg;
3810
3811         if (cookie.error)
3812                 goto nla_put_failure;
3813
3814         genlmsg_end(msg, hdr);
3815         return genlmsg_reply(msg, info);
3816
3817  nla_put_failure:
3818         err = -ENOBUFS;
3819  free_msg:
3820         nlmsg_free(msg);
3821         return err;
3822 }
3823
3824 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3825 {
3826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3827         struct key_parse key;
3828         int err;
3829         struct net_device *dev = info->user_ptr[1];
3830
3831         err = nl80211_parse_key(info, &key);
3832         if (err)
3833                 return err;
3834
3835         if (key.idx < 0)
3836                 return -EINVAL;
3837
3838         /* Only support setting default key and
3839          * Extended Key ID action NL80211_KEY_SET_TX.
3840          */
3841         if (!key.def && !key.defmgmt &&
3842             !(key.p.mode == NL80211_KEY_SET_TX))
3843                 return -EINVAL;
3844
3845         wdev_lock(dev->ieee80211_ptr);
3846
3847         if (key.def) {
3848                 if (!rdev->ops->set_default_key) {
3849                         err = -EOPNOTSUPP;
3850                         goto out;
3851                 }
3852
3853                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3854                 if (err)
3855                         goto out;
3856
3857                 err = rdev_set_default_key(rdev, dev, key.idx,
3858                                                  key.def_uni, key.def_multi);
3859
3860                 if (err)
3861                         goto out;
3862
3863 #ifdef CONFIG_CFG80211_WEXT
3864                 dev->ieee80211_ptr->wext.default_key = key.idx;
3865 #endif
3866         } else if (key.defmgmt) {
3867                 if (key.def_uni || !key.def_multi) {
3868                         err = -EINVAL;
3869                         goto out;
3870                 }
3871
3872                 if (!rdev->ops->set_default_mgmt_key) {
3873                         err = -EOPNOTSUPP;
3874                         goto out;
3875                 }
3876
3877                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3878                 if (err)
3879                         goto out;
3880
3881                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3882                 if (err)
3883                         goto out;
3884
3885 #ifdef CONFIG_CFG80211_WEXT
3886                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3887 #endif
3888         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3889                    wiphy_ext_feature_isset(&rdev->wiphy,
3890                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3891                 u8 *mac_addr = NULL;
3892
3893                 if (info->attrs[NL80211_ATTR_MAC])
3894                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3895
3896                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3897                         err = -EINVAL;
3898                         goto out;
3899                 }
3900
3901                 err = rdev_add_key(rdev, dev, key.idx,
3902                                    NL80211_KEYTYPE_PAIRWISE,
3903                                    mac_addr, &key.p);
3904         } else {
3905                 err = -EINVAL;
3906         }
3907  out:
3908         wdev_unlock(dev->ieee80211_ptr);
3909
3910         return err;
3911 }
3912
3913 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3914 {
3915         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3916         int err;
3917         struct net_device *dev = info->user_ptr[1];
3918         struct key_parse key;
3919         const u8 *mac_addr = NULL;
3920
3921         err = nl80211_parse_key(info, &key);
3922         if (err)
3923                 return err;
3924
3925         if (!key.p.key)
3926                 return -EINVAL;
3927
3928         if (info->attrs[NL80211_ATTR_MAC])
3929                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3930
3931         if (key.type == -1) {
3932                 if (mac_addr)
3933                         key.type = NL80211_KEYTYPE_PAIRWISE;
3934                 else
3935                         key.type = NL80211_KEYTYPE_GROUP;
3936         }
3937
3938         /* for now */
3939         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3940             key.type != NL80211_KEYTYPE_GROUP)
3941                 return -EINVAL;
3942
3943         if (!rdev->ops->add_key)
3944                 return -EOPNOTSUPP;
3945
3946         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3947                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3948                                            mac_addr))
3949                 return -EINVAL;
3950
3951         wdev_lock(dev->ieee80211_ptr);
3952         err = nl80211_key_allowed(dev->ieee80211_ptr);
3953         if (!err)
3954                 err = rdev_add_key(rdev, dev, key.idx,
3955                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3956                                     mac_addr, &key.p);
3957         wdev_unlock(dev->ieee80211_ptr);
3958
3959         return err;
3960 }
3961
3962 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3963 {
3964         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3965         int err;
3966         struct net_device *dev = info->user_ptr[1];
3967         u8 *mac_addr = NULL;
3968         struct key_parse key;
3969
3970         err = nl80211_parse_key(info, &key);
3971         if (err)
3972                 return err;
3973
3974         if (info->attrs[NL80211_ATTR_MAC])
3975                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3976
3977         if (key.type == -1) {
3978                 if (mac_addr)
3979                         key.type = NL80211_KEYTYPE_PAIRWISE;
3980                 else
3981                         key.type = NL80211_KEYTYPE_GROUP;
3982         }
3983
3984         /* for now */
3985         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3986             key.type != NL80211_KEYTYPE_GROUP)
3987                 return -EINVAL;
3988
3989         if (!rdev->ops->del_key)
3990                 return -EOPNOTSUPP;
3991
3992         wdev_lock(dev->ieee80211_ptr);
3993         err = nl80211_key_allowed(dev->ieee80211_ptr);
3994
3995         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3996             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3997                 err = -ENOENT;
3998
3999         if (!err)
4000                 err = rdev_del_key(rdev, dev, key.idx,
4001                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4002                                    mac_addr);
4003
4004 #ifdef CONFIG_CFG80211_WEXT
4005         if (!err) {
4006                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4007                         dev->ieee80211_ptr->wext.default_key = -1;
4008                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4009                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4010         }
4011 #endif
4012         wdev_unlock(dev->ieee80211_ptr);
4013
4014         return err;
4015 }
4016
4017 /* This function returns an error or the number of nested attributes */
4018 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4019 {
4020         struct nlattr *attr;
4021         int n_entries = 0, tmp;
4022
4023         nla_for_each_nested(attr, nl_attr, tmp) {
4024                 if (nla_len(attr) != ETH_ALEN)
4025                         return -EINVAL;
4026
4027                 n_entries++;
4028         }
4029
4030         return n_entries;
4031 }
4032
4033 /*
4034  * This function parses ACL information and allocates memory for ACL data.
4035  * On successful return, the calling function is responsible to free the
4036  * ACL buffer returned by this function.
4037  */
4038 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4039                                                 struct genl_info *info)
4040 {
4041         enum nl80211_acl_policy acl_policy;
4042         struct nlattr *attr;
4043         struct cfg80211_acl_data *acl;
4044         int i = 0, n_entries, tmp;
4045
4046         if (!wiphy->max_acl_mac_addrs)
4047                 return ERR_PTR(-EOPNOTSUPP);
4048
4049         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4050                 return ERR_PTR(-EINVAL);
4051
4052         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4053         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4054             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4055                 return ERR_PTR(-EINVAL);
4056
4057         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4058                 return ERR_PTR(-EINVAL);
4059
4060         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4061         if (n_entries < 0)
4062                 return ERR_PTR(n_entries);
4063
4064         if (n_entries > wiphy->max_acl_mac_addrs)
4065                 return ERR_PTR(-ENOTSUPP);
4066
4067         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4068         if (!acl)
4069                 return ERR_PTR(-ENOMEM);
4070
4071         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4072                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4073                 i++;
4074         }
4075
4076         acl->n_acl_entries = n_entries;
4077         acl->acl_policy = acl_policy;
4078
4079         return acl;
4080 }
4081
4082 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4083 {
4084         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4085         struct net_device *dev = info->user_ptr[1];
4086         struct cfg80211_acl_data *acl;
4087         int err;
4088
4089         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4090             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4091                 return -EOPNOTSUPP;
4092
4093         if (!dev->ieee80211_ptr->beacon_interval)
4094                 return -EINVAL;
4095
4096         acl = parse_acl_data(&rdev->wiphy, info);
4097         if (IS_ERR(acl))
4098                 return PTR_ERR(acl);
4099
4100         err = rdev_set_mac_acl(rdev, dev, acl);
4101
4102         kfree(acl);
4103
4104         return err;
4105 }
4106
4107 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4108                            u8 *rates, u8 rates_len)
4109 {
4110         u8 i;
4111         u32 mask = 0;
4112
4113         for (i = 0; i < rates_len; i++) {
4114                 int rate = (rates[i] & 0x7f) * 5;
4115                 int ridx;
4116
4117                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4118                         struct ieee80211_rate *srate =
4119                                 &sband->bitrates[ridx];
4120                         if (rate == srate->bitrate) {
4121                                 mask |= 1 << ridx;
4122                                 break;
4123                         }
4124                 }
4125                 if (ridx == sband->n_bitrates)
4126                         return 0; /* rate not found */
4127         }
4128
4129         return mask;
4130 }
4131
4132 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4133                                u8 *rates, u8 rates_len,
4134                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4135 {
4136         u8 i;
4137
4138         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4139
4140         for (i = 0; i < rates_len; i++) {
4141                 int ridx, rbit;
4142
4143                 ridx = rates[i] / 8;
4144                 rbit = BIT(rates[i] % 8);
4145
4146                 /* check validity */
4147                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4148                         return false;
4149
4150                 /* check availability */
4151                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4152                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4153                         mcs[ridx] |= rbit;
4154                 else
4155                         return false;
4156         }
4157
4158         return true;
4159 }
4160
4161 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4162 {
4163         u16 mcs_mask = 0;
4164
4165         switch (vht_mcs_map) {
4166         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4167                 break;
4168         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4169                 mcs_mask = 0x00FF;
4170                 break;
4171         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4172                 mcs_mask = 0x01FF;
4173                 break;
4174         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4175                 mcs_mask = 0x03FF;
4176                 break;
4177         default:
4178                 break;
4179         }
4180
4181         return mcs_mask;
4182 }
4183
4184 static void vht_build_mcs_mask(u16 vht_mcs_map,
4185                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4186 {
4187         u8 nss;
4188
4189         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4190                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4191                 vht_mcs_map >>= 2;
4192         }
4193 }
4194
4195 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4196                              struct nl80211_txrate_vht *txrate,
4197                              u16 mcs[NL80211_VHT_NSS_MAX])
4198 {
4199         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4200         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4201         u8 i;
4202
4203         if (!sband->vht_cap.vht_supported)
4204                 return false;
4205
4206         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4207
4208         /* Build vht_mcs_mask from VHT capabilities */
4209         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4210
4211         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4212                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4213                         mcs[i] = txrate->mcs[i];
4214                 else
4215                         return false;
4216         }
4217
4218         return true;
4219 }
4220
4221 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4222         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4223                                     .len = NL80211_MAX_SUPP_RATES },
4224         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4225                                 .len = NL80211_MAX_SUPP_HT_RATES },
4226         [NL80211_TXRATE_VHT] = {
4227                 .type = NLA_EXACT_LEN_WARN,
4228                 .len = sizeof(struct nl80211_txrate_vht),
4229         },
4230         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4231 };
4232
4233 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4234                                          struct cfg80211_bitrate_mask *mask)
4235 {
4236         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4238         int rem, i;
4239         struct nlattr *tx_rates;
4240         struct ieee80211_supported_band *sband;
4241         u16 vht_tx_mcs_map;
4242
4243         memset(mask, 0, sizeof(*mask));
4244         /* Default to all rates enabled */
4245         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4246                 sband = rdev->wiphy.bands[i];
4247
4248                 if (!sband)
4249                         continue;
4250
4251                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4252                 memcpy(mask->control[i].ht_mcs,
4253                        sband->ht_cap.mcs.rx_mask,
4254                        sizeof(mask->control[i].ht_mcs));
4255
4256                 if (!sband->vht_cap.vht_supported)
4257                         continue;
4258
4259                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4260                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4261         }
4262
4263         /* if no rates are given set it back to the defaults */
4264         if (!info->attrs[NL80211_ATTR_TX_RATES])
4265                 goto out;
4266
4267         /* The nested attribute uses enum nl80211_band as the index. This maps
4268          * directly to the enum nl80211_band values used in cfg80211.
4269          */
4270         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4271         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4272                 enum nl80211_band band = nla_type(tx_rates);
4273                 int err;
4274
4275                 if (band < 0 || band >= NUM_NL80211_BANDS)
4276                         return -EINVAL;
4277                 sband = rdev->wiphy.bands[band];
4278                 if (sband == NULL)
4279                         return -EINVAL;
4280                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4281                                                   tx_rates,
4282                                                   nl80211_txattr_policy,
4283                                                   info->extack);
4284                 if (err)
4285                         return err;
4286                 if (tb[NL80211_TXRATE_LEGACY]) {
4287                         mask->control[band].legacy = rateset_to_mask(
4288                                 sband,
4289                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4290                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4291                         if ((mask->control[band].legacy == 0) &&
4292                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4293                                 return -EINVAL;
4294                 }
4295                 if (tb[NL80211_TXRATE_HT]) {
4296                         if (!ht_rateset_to_mask(
4297                                         sband,
4298                                         nla_data(tb[NL80211_TXRATE_HT]),
4299                                         nla_len(tb[NL80211_TXRATE_HT]),
4300                                         mask->control[band].ht_mcs))
4301                                 return -EINVAL;
4302                 }
4303                 if (tb[NL80211_TXRATE_VHT]) {
4304                         if (!vht_set_mcs_mask(
4305                                         sband,
4306                                         nla_data(tb[NL80211_TXRATE_VHT]),
4307                                         mask->control[band].vht_mcs))
4308                                 return -EINVAL;
4309                 }
4310                 if (tb[NL80211_TXRATE_GI]) {
4311                         mask->control[band].gi =
4312                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4313                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4314                                 return -EINVAL;
4315                 }
4316
4317                 if (mask->control[band].legacy == 0) {
4318                         /* don't allow empty legacy rates if HT or VHT
4319                          * are not even supported.
4320                          */
4321                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4322                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4323                                 return -EINVAL;
4324
4325                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4326                                 if (mask->control[band].ht_mcs[i])
4327                                         goto out;
4328
4329                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4330                                 if (mask->control[band].vht_mcs[i])
4331                                         goto out;
4332
4333                         /* legacy and mcs rates may not be both empty */
4334                         return -EINVAL;
4335                 }
4336         }
4337
4338 out:
4339         return 0;
4340 }
4341
4342 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4343                                    enum nl80211_band band,
4344                                    struct cfg80211_bitrate_mask *beacon_rate)
4345 {
4346         u32 count_ht, count_vht, i;
4347         u32 rate = beacon_rate->control[band].legacy;
4348
4349         /* Allow only one rate */
4350         if (hweight32(rate) > 1)
4351                 return -EINVAL;
4352
4353         count_ht = 0;
4354         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4355                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4356                         return -EINVAL;
4357                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4358                         count_ht++;
4359                         if (count_ht > 1)
4360                                 return -EINVAL;
4361                 }
4362                 if (count_ht && rate)
4363                         return -EINVAL;
4364         }
4365
4366         count_vht = 0;
4367         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4368                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4369                         return -EINVAL;
4370                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4371                         count_vht++;
4372                         if (count_vht > 1)
4373                                 return -EINVAL;
4374                 }
4375                 if (count_vht && rate)
4376                         return -EINVAL;
4377         }
4378
4379         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4380                 return -EINVAL;
4381
4382         if (rate &&
4383             !wiphy_ext_feature_isset(&rdev->wiphy,
4384                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4385                 return -EINVAL;
4386         if (count_ht &&
4387             !wiphy_ext_feature_isset(&rdev->wiphy,
4388                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4389                 return -EINVAL;
4390         if (count_vht &&
4391             !wiphy_ext_feature_isset(&rdev->wiphy,
4392                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4393                 return -EINVAL;
4394
4395         return 0;
4396 }
4397
4398 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4399                                 struct nlattr *attrs[],
4400                                 struct cfg80211_beacon_data *bcn)
4401 {
4402         bool haveinfo = false;
4403         int err;
4404
4405         memset(bcn, 0, sizeof(*bcn));
4406
4407         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4408                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4409                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4410                 if (!bcn->head_len)
4411                         return -EINVAL;
4412                 haveinfo = true;
4413         }
4414
4415         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4416                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4417                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4418                 haveinfo = true;
4419         }
4420
4421         if (!haveinfo)
4422                 return -EINVAL;
4423
4424         if (attrs[NL80211_ATTR_IE]) {
4425                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4426                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4427         }
4428
4429         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4430                 bcn->proberesp_ies =
4431                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4432                 bcn->proberesp_ies_len =
4433                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4434         }
4435
4436         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4437                 bcn->assocresp_ies =
4438                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4439                 bcn->assocresp_ies_len =
4440                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4441         }
4442
4443         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4444                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4445                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4446         }
4447
4448         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4449                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4450
4451                 err = nla_parse_nested_deprecated(tb,
4452                                                   NL80211_FTM_RESP_ATTR_MAX,
4453                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4454                                                   NULL, NULL);
4455                 if (err)
4456                         return err;
4457
4458                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4459                     wiphy_ext_feature_isset(&rdev->wiphy,
4460                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4461                         bcn->ftm_responder = 1;
4462                 else
4463                         return -EOPNOTSUPP;
4464
4465                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4466                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4467                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4468                 }
4469
4470                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4471                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4472                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4473                 }
4474         } else {
4475                 bcn->ftm_responder = -1;
4476         }
4477
4478         return 0;
4479 }
4480
4481 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4482                                     struct ieee80211_he_obss_pd *he_obss_pd)
4483 {
4484         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4485         int err;
4486
4487         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4488                                he_obss_pd_policy, NULL);
4489         if (err)
4490                 return err;
4491
4492         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4493             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4494                 return -EINVAL;
4495
4496         he_obss_pd->min_offset =
4497                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4498         he_obss_pd->max_offset =
4499                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4500
4501         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4502                 return -EINVAL;
4503
4504         he_obss_pd->enable = true;
4505
4506         return 0;
4507 }
4508
4509 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4510                                             const u8 *rates)
4511 {
4512         int i;
4513
4514         if (!rates)
4515                 return;
4516
4517         for (i = 0; i < rates[1]; i++) {
4518                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4519                         params->ht_required = true;
4520                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4521                         params->vht_required = true;
4522         }
4523 }
4524
4525 /*
4526  * Since the nl80211 API didn't include, from the beginning, attributes about
4527  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4528  * benefit of drivers that rebuild IEs in the firmware.
4529  */
4530 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4531 {
4532         const struct cfg80211_beacon_data *bcn = &params->beacon;
4533         size_t ies_len = bcn->tail_len;
4534         const u8 *ies = bcn->tail;
4535         const u8 *rates;
4536         const u8 *cap;
4537
4538         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4539         nl80211_check_ap_rate_selectors(params, rates);
4540
4541         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4542         nl80211_check_ap_rate_selectors(params, rates);
4543
4544         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4545         if (cap && cap[1] >= sizeof(*params->ht_cap))
4546                 params->ht_cap = (void *)(cap + 2);
4547         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4548         if (cap && cap[1] >= sizeof(*params->vht_cap))
4549                 params->vht_cap = (void *)(cap + 2);
4550         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4551         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4552                 params->he_cap = (void *)(cap + 3);
4553 }
4554
4555 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4556                                    struct cfg80211_ap_settings *params)
4557 {
4558         struct wireless_dev *wdev;
4559         bool ret = false;
4560
4561         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4562                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4563                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4564                         continue;
4565
4566                 if (!wdev->preset_chandef.chan)
4567                         continue;
4568
4569                 params->chandef = wdev->preset_chandef;
4570                 ret = true;
4571                 break;
4572         }
4573
4574         return ret;
4575 }
4576
4577 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4578                                     enum nl80211_auth_type auth_type,
4579                                     enum nl80211_commands cmd)
4580 {
4581         if (auth_type > NL80211_AUTHTYPE_MAX)
4582                 return false;
4583
4584         switch (cmd) {
4585         case NL80211_CMD_AUTHENTICATE:
4586                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4587                     auth_type == NL80211_AUTHTYPE_SAE)
4588                         return false;
4589                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4590                                              NL80211_EXT_FEATURE_FILS_STA) &&
4591                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4592                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4593                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4594                         return false;
4595                 return true;
4596         case NL80211_CMD_CONNECT:
4597                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4598                     !wiphy_ext_feature_isset(&rdev->wiphy,
4599                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4600                     auth_type == NL80211_AUTHTYPE_SAE)
4601                         return false;
4602
4603                 /* FILS with SK PFS or PK not supported yet */
4604                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4605                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4606                         return false;
4607                 if (!wiphy_ext_feature_isset(
4608                             &rdev->wiphy,
4609                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4610                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4611                         return false;
4612                 return true;
4613         case NL80211_CMD_START_AP:
4614                 /* SAE not supported yet */
4615                 if (auth_type == NL80211_AUTHTYPE_SAE)
4616                         return false;
4617                 /* FILS not supported yet */
4618                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4619                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4620                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4621                         return false;
4622                 return true;
4623         default:
4624                 return false;
4625         }
4626 }
4627
4628 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4629 {
4630         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4631         struct net_device *dev = info->user_ptr[1];
4632         struct wireless_dev *wdev = dev->ieee80211_ptr;
4633         struct cfg80211_ap_settings params;
4634         int err;
4635
4636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4637             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4638                 return -EOPNOTSUPP;
4639
4640         if (!rdev->ops->start_ap)
4641                 return -EOPNOTSUPP;
4642
4643         if (wdev->beacon_interval)
4644                 return -EALREADY;
4645
4646         memset(&params, 0, sizeof(params));
4647
4648         /* these are required for START_AP */
4649         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4650             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4651             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4652                 return -EINVAL;
4653
4654         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4655         if (err)
4656                 return err;
4657
4658         params.beacon_interval =
4659                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4660         params.dtim_period =
4661                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4662
4663         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4664                                            params.beacon_interval);
4665         if (err)
4666                 return err;
4667
4668         /*
4669          * In theory, some of these attributes should be required here
4670          * but since they were not used when the command was originally
4671          * added, keep them optional for old user space programs to let
4672          * them continue to work with drivers that do not need the
4673          * additional information -- drivers must check!
4674          */
4675         if (info->attrs[NL80211_ATTR_SSID]) {
4676                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4677                 params.ssid_len =
4678                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4679                 if (params.ssid_len == 0 ||
4680                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4681                         return -EINVAL;
4682         }
4683
4684         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4685                 params.hidden_ssid = nla_get_u32(
4686                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4687
4688         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4689
4690         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4691                 params.auth_type = nla_get_u32(
4692                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4693                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4694                                              NL80211_CMD_START_AP))
4695                         return -EINVAL;
4696         } else
4697                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4698
4699         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4700                                       NL80211_MAX_NR_CIPHER_SUITES);
4701         if (err)
4702                 return err;
4703
4704         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4705                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4706                         return -EOPNOTSUPP;
4707                 params.inactivity_timeout = nla_get_u16(
4708                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4709         }
4710
4711         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4712                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4713                         return -EINVAL;
4714                 params.p2p_ctwindow =
4715                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4716                 if (params.p2p_ctwindow != 0 &&
4717                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4718                         return -EINVAL;
4719         }
4720
4721         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4722                 u8 tmp;
4723
4724                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4725                         return -EINVAL;
4726                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4727                 params.p2p_opp_ps = tmp;
4728                 if (params.p2p_opp_ps != 0 &&
4729                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4730                         return -EINVAL;
4731         }
4732
4733         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4734                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4735                 if (err)
4736                         return err;
4737         } else if (wdev->preset_chandef.chan) {
4738                 params.chandef = wdev->preset_chandef;
4739         } else if (!nl80211_get_ap_channel(rdev, &params))
4740                 return -EINVAL;
4741
4742         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4743                                            wdev->iftype))
4744                 return -EINVAL;
4745
4746         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4747                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4748                 if (err)
4749                         return err;
4750
4751                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4752                                               &params.beacon_rate);
4753                 if (err)
4754                         return err;
4755         }
4756
4757         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4758                 params.smps_mode =
4759                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4760                 switch (params.smps_mode) {
4761                 case NL80211_SMPS_OFF:
4762                         break;
4763                 case NL80211_SMPS_STATIC:
4764                         if (!(rdev->wiphy.features &
4765                               NL80211_FEATURE_STATIC_SMPS))
4766                                 return -EINVAL;
4767                         break;
4768                 case NL80211_SMPS_DYNAMIC:
4769                         if (!(rdev->wiphy.features &
4770                               NL80211_FEATURE_DYNAMIC_SMPS))
4771                                 return -EINVAL;
4772                         break;
4773                 default:
4774                         return -EINVAL;
4775                 }
4776         } else {
4777                 params.smps_mode = NL80211_SMPS_OFF;
4778         }
4779
4780         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4781         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4782                 return -EOPNOTSUPP;
4783
4784         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4785                 params.acl = parse_acl_data(&rdev->wiphy, info);
4786                 if (IS_ERR(params.acl))
4787                         return PTR_ERR(params.acl);
4788         }
4789
4790         params.twt_responder =
4791                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4792
4793         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4794                 err = nl80211_parse_he_obss_pd(
4795                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4796                                         &params.he_obss_pd);
4797                 if (err)
4798                         return err;
4799         }
4800
4801         nl80211_calculate_ap_params(&params);
4802
4803         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4804                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4805
4806         wdev_lock(wdev);
4807         err = rdev_start_ap(rdev, dev, &params);
4808         if (!err) {
4809                 wdev->preset_chandef = params.chandef;
4810                 wdev->beacon_interval = params.beacon_interval;
4811                 wdev->chandef = params.chandef;
4812                 wdev->ssid_len = params.ssid_len;
4813                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4814
4815                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4816                         wdev->conn_owner_nlportid = info->snd_portid;
4817         }
4818         wdev_unlock(wdev);
4819
4820         kfree(params.acl);
4821
4822         return err;
4823 }
4824
4825 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4826 {
4827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4828         struct net_device *dev = info->user_ptr[1];
4829         struct wireless_dev *wdev = dev->ieee80211_ptr;
4830         struct cfg80211_beacon_data params;
4831         int err;
4832
4833         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4834             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4835                 return -EOPNOTSUPP;
4836
4837         if (!rdev->ops->change_beacon)
4838                 return -EOPNOTSUPP;
4839
4840         if (!wdev->beacon_interval)
4841                 return -EINVAL;
4842
4843         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4844         if (err)
4845                 return err;
4846
4847         wdev_lock(wdev);
4848         err = rdev_change_beacon(rdev, dev, &params);
4849         wdev_unlock(wdev);
4850
4851         return err;
4852 }
4853
4854 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4855 {
4856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4857         struct net_device *dev = info->user_ptr[1];
4858
4859         return cfg80211_stop_ap(rdev, dev, false);
4860 }
4861
4862 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4863         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4864         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4865         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4866         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4867         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4868         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4869 };
4870
4871 static int parse_station_flags(struct genl_info *info,
4872                                enum nl80211_iftype iftype,
4873                                struct station_parameters *params)
4874 {
4875         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4876         struct nlattr *nla;
4877         int flag;
4878
4879         /*
4880          * Try parsing the new attribute first so userspace
4881          * can specify both for older kernels.
4882          */
4883         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4884         if (nla) {
4885                 struct nl80211_sta_flag_update *sta_flags;
4886
4887                 sta_flags = nla_data(nla);
4888                 params->sta_flags_mask = sta_flags->mask;
4889                 params->sta_flags_set = sta_flags->set;
4890                 params->sta_flags_set &= params->sta_flags_mask;
4891                 if ((params->sta_flags_mask |
4892                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4893                         return -EINVAL;
4894                 return 0;
4895         }
4896
4897         /* if present, parse the old attribute */
4898
4899         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4900         if (!nla)
4901                 return 0;
4902
4903         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4904                 return -EINVAL;
4905
4906         /*
4907          * Only allow certain flags for interface types so that
4908          * other attributes are silently ignored. Remember that
4909          * this is backward compatibility code with old userspace
4910          * and shouldn't be hit in other cases anyway.
4911          */
4912         switch (iftype) {
4913         case NL80211_IFTYPE_AP:
4914         case NL80211_IFTYPE_AP_VLAN:
4915         case NL80211_IFTYPE_P2P_GO:
4916                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4917                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4918                                          BIT(NL80211_STA_FLAG_WME) |
4919                                          BIT(NL80211_STA_FLAG_MFP);
4920                 break;
4921         case NL80211_IFTYPE_P2P_CLIENT:
4922         case NL80211_IFTYPE_STATION:
4923                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4924                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4925                 break;
4926         case NL80211_IFTYPE_MESH_POINT:
4927                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4928                                          BIT(NL80211_STA_FLAG_MFP) |
4929                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4930                 break;
4931         default:
4932                 return -EINVAL;
4933         }
4934
4935         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4936                 if (flags[flag]) {
4937                         params->sta_flags_set |= (1<<flag);
4938
4939                         /* no longer support new API additions in old API */
4940                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4941                                 return -EINVAL;
4942                 }
4943         }
4944
4945         return 0;
4946 }
4947
4948 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4949 {
4950         struct nlattr *rate;
4951         u32 bitrate;
4952         u16 bitrate_compat;
4953         enum nl80211_rate_info rate_flg;
4954
4955         rate = nla_nest_start_noflag(msg, attr);
4956         if (!rate)
4957                 return false;
4958
4959         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4960         bitrate = cfg80211_calculate_bitrate(info);
4961         /* report 16-bit bitrate only if we can */
4962         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4963         if (bitrate > 0 &&
4964             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4965                 return false;
4966         if (bitrate_compat > 0 &&
4967             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4968                 return false;
4969
4970         switch (info->bw) {
4971         case RATE_INFO_BW_5:
4972                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4973                 break;
4974         case RATE_INFO_BW_10:
4975                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4976                 break;
4977         default:
4978                 WARN_ON(1);
4979                 /* fall through */
4980         case RATE_INFO_BW_20:
4981                 rate_flg = 0;
4982                 break;
4983         case RATE_INFO_BW_40:
4984                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4985                 break;
4986         case RATE_INFO_BW_80:
4987                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4988                 break;
4989         case RATE_INFO_BW_160:
4990                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4991                 break;
4992         case RATE_INFO_BW_HE_RU:
4993                 rate_flg = 0;
4994                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4995         }
4996
4997         if (rate_flg && nla_put_flag(msg, rate_flg))
4998                 return false;
4999
5000         if (info->flags & RATE_INFO_FLAGS_MCS) {
5001                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5002                         return false;
5003                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5004                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5005                         return false;
5006         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5007                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5008                         return false;
5009                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5010                         return false;
5011                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5012                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5013                         return false;
5014         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5015                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5016                         return false;
5017                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5018                         return false;
5019                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5020                         return false;
5021                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5022                         return false;
5023                 if (info->bw == RATE_INFO_BW_HE_RU &&
5024                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5025                                info->he_ru_alloc))
5026                         return false;
5027         }
5028
5029         nla_nest_end(msg, rate);
5030         return true;
5031 }
5032
5033 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5034                                int id)
5035 {
5036         void *attr;
5037         int i = 0;
5038
5039         if (!mask)
5040                 return true;
5041
5042         attr = nla_nest_start_noflag(msg, id);
5043         if (!attr)
5044                 return false;
5045
5046         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5047                 if (!(mask & BIT(i)))
5048                         continue;
5049
5050                 if (nla_put_u8(msg, i, signal[i]))
5051                         return false;
5052         }
5053
5054         nla_nest_end(msg, attr);
5055
5056         return true;
5057 }
5058
5059 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5060                                 u32 seq, int flags,
5061                                 struct cfg80211_registered_device *rdev,
5062                                 struct net_device *dev,
5063                                 const u8 *mac_addr, struct station_info *sinfo)
5064 {
5065         void *hdr;
5066         struct nlattr *sinfoattr, *bss_param;
5067
5068         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5069         if (!hdr) {
5070                 cfg80211_sinfo_release_content(sinfo);
5071                 return -1;
5072         }
5073
5074         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5075             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5076             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5077                 goto nla_put_failure;
5078
5079         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5080         if (!sinfoattr)
5081                 goto nla_put_failure;
5082
5083 #define PUT_SINFO(attr, memb, type) do {                                \
5084         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5085         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5086             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5087                              sinfo->memb))                              \
5088                 goto nla_put_failure;                                   \
5089         } while (0)
5090 #define PUT_SINFO_U64(attr, memb) do {                                  \
5091         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5092             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5093                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5094                 goto nla_put_failure;                                   \
5095         } while (0)
5096
5097         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5098         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5099         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5100
5101         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5102                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5103             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5104                         (u32)sinfo->rx_bytes))
5105                 goto nla_put_failure;
5106
5107         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5108                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5109             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5110                         (u32)sinfo->tx_bytes))
5111                 goto nla_put_failure;
5112
5113         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5114         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5115         PUT_SINFO(LLID, llid, u16);
5116         PUT_SINFO(PLID, plid, u16);
5117         PUT_SINFO(PLINK_STATE, plink_state, u8);
5118         PUT_SINFO_U64(RX_DURATION, rx_duration);
5119         PUT_SINFO_U64(TX_DURATION, tx_duration);
5120
5121         if (wiphy_ext_feature_isset(&rdev->wiphy,
5122                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5123                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5124
5125         switch (rdev->wiphy.signal_type) {
5126         case CFG80211_SIGNAL_TYPE_MBM:
5127                 PUT_SINFO(SIGNAL, signal, u8);
5128                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5129                 break;
5130         default:
5131                 break;
5132         }
5133         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5134                 if (!nl80211_put_signal(msg, sinfo->chains,
5135                                         sinfo->chain_signal,
5136                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5137                         goto nla_put_failure;
5138         }
5139         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5140                 if (!nl80211_put_signal(msg, sinfo->chains,
5141                                         sinfo->chain_signal_avg,
5142                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5143                         goto nla_put_failure;
5144         }
5145         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5146                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5147                                           NL80211_STA_INFO_TX_BITRATE))
5148                         goto nla_put_failure;
5149         }
5150         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5151                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5152                                           NL80211_STA_INFO_RX_BITRATE))
5153                         goto nla_put_failure;
5154         }
5155
5156         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5157         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5158         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5159         PUT_SINFO(TX_FAILED, tx_failed, u32);
5160         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5161         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5162         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5163         PUT_SINFO(LOCAL_PM, local_pm, u32);
5164         PUT_SINFO(PEER_PM, peer_pm, u32);
5165         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5166         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5167
5168         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5169                 bss_param = nla_nest_start_noflag(msg,
5170                                                   NL80211_STA_INFO_BSS_PARAM);
5171                 if (!bss_param)
5172                         goto nla_put_failure;
5173
5174                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5175                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5176                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5177                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5178                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5179                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5180                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5181                                sinfo->bss_param.dtim_period) ||
5182                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5183                                 sinfo->bss_param.beacon_interval))
5184                         goto nla_put_failure;
5185
5186                 nla_nest_end(msg, bss_param);
5187         }
5188         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5189             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5190                     sizeof(struct nl80211_sta_flag_update),
5191                     &sinfo->sta_flags))
5192                 goto nla_put_failure;
5193
5194         PUT_SINFO_U64(T_OFFSET, t_offset);
5195         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5196         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5197         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5198         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5199         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5200         if (wiphy_ext_feature_isset(&rdev->wiphy,
5201                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5202                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5203                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5204         }
5205
5206 #undef PUT_SINFO
5207 #undef PUT_SINFO_U64
5208
5209         if (sinfo->pertid) {
5210                 struct nlattr *tidsattr;
5211                 int tid;
5212
5213                 tidsattr = nla_nest_start_noflag(msg,
5214                                                  NL80211_STA_INFO_TID_STATS);
5215                 if (!tidsattr)
5216                         goto nla_put_failure;
5217
5218                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5219                         struct cfg80211_tid_stats *tidstats;
5220                         struct nlattr *tidattr;
5221
5222                         tidstats = &sinfo->pertid[tid];
5223
5224                         if (!tidstats->filled)
5225                                 continue;
5226
5227                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5228                         if (!tidattr)
5229                                 goto nla_put_failure;
5230
5231 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5232         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5233             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5234                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5235                 goto nla_put_failure;                                   \
5236         } while (0)
5237
5238                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5239                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5240                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5241                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5242
5243 #undef PUT_TIDVAL_U64
5244                         if ((tidstats->filled &
5245                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5246                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5247                                                    NL80211_TID_STATS_TXQ_STATS))
5248                                 goto nla_put_failure;
5249
5250                         nla_nest_end(msg, tidattr);
5251                 }
5252
5253                 nla_nest_end(msg, tidsattr);
5254         }
5255
5256         nla_nest_end(msg, sinfoattr);
5257
5258         if (sinfo->assoc_req_ies_len &&
5259             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5260                     sinfo->assoc_req_ies))
5261                 goto nla_put_failure;
5262
5263         cfg80211_sinfo_release_content(sinfo);
5264         genlmsg_end(msg, hdr);
5265         return 0;
5266
5267  nla_put_failure:
5268         cfg80211_sinfo_release_content(sinfo);
5269         genlmsg_cancel(msg, hdr);
5270         return -EMSGSIZE;
5271 }
5272
5273 static int nl80211_dump_station(struct sk_buff *skb,
5274                                 struct netlink_callback *cb)
5275 {
5276         struct station_info sinfo;
5277         struct cfg80211_registered_device *rdev;
5278         struct wireless_dev *wdev;
5279         u8 mac_addr[ETH_ALEN];
5280         int sta_idx = cb->args[2];
5281         int err;
5282
5283         rtnl_lock();
5284         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5285         if (err)
5286                 goto out_err;
5287
5288         if (!wdev->netdev) {
5289                 err = -EINVAL;
5290                 goto out_err;
5291         }
5292
5293         if (!rdev->ops->dump_station) {
5294                 err = -EOPNOTSUPP;
5295                 goto out_err;
5296         }
5297
5298         while (1) {
5299                 memset(&sinfo, 0, sizeof(sinfo));
5300                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5301                                         mac_addr, &sinfo);
5302                 if (err == -ENOENT)
5303                         break;
5304                 if (err)
5305                         goto out_err;
5306
5307                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5308                                 NETLINK_CB(cb->skb).portid,
5309                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5310                                 rdev, wdev->netdev, mac_addr,
5311                                 &sinfo) < 0)
5312                         goto out;
5313
5314                 sta_idx++;
5315         }
5316
5317  out:
5318         cb->args[2] = sta_idx;
5319         err = skb->len;
5320  out_err:
5321         rtnl_unlock();
5322
5323         return err;
5324 }
5325
5326 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5327 {
5328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5329         struct net_device *dev = info->user_ptr[1];
5330         struct station_info sinfo;
5331         struct sk_buff *msg;
5332         u8 *mac_addr = NULL;
5333         int err;
5334
5335         memset(&sinfo, 0, sizeof(sinfo));
5336
5337         if (!info->attrs[NL80211_ATTR_MAC])
5338                 return -EINVAL;
5339
5340         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5341
5342         if (!rdev->ops->get_station)
5343                 return -EOPNOTSUPP;
5344
5345         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5346         if (err)
5347                 return err;
5348
5349         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5350         if (!msg) {
5351                 cfg80211_sinfo_release_content(&sinfo);
5352                 return -ENOMEM;
5353         }
5354
5355         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5356                                  info->snd_portid, info->snd_seq, 0,
5357                                  rdev, dev, mac_addr, &sinfo) < 0) {
5358                 nlmsg_free(msg);
5359                 return -ENOBUFS;
5360         }
5361
5362         return genlmsg_reply(msg, info);
5363 }
5364
5365 int cfg80211_check_station_change(struct wiphy *wiphy,
5366                                   struct station_parameters *params,
5367                                   enum cfg80211_station_type statype)
5368 {
5369         if (params->listen_interval != -1 &&
5370             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5371                 return -EINVAL;
5372
5373         if (params->support_p2p_ps != -1 &&
5374             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5375                 return -EINVAL;
5376
5377         if (params->aid &&
5378             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5379             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5380                 return -EINVAL;
5381
5382         /* When you run into this, adjust the code below for the new flag */
5383         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5384
5385         switch (statype) {
5386         case CFG80211_STA_MESH_PEER_KERNEL:
5387         case CFG80211_STA_MESH_PEER_USER:
5388                 /*
5389                  * No ignoring the TDLS flag here -- the userspace mesh
5390                  * code doesn't have the bug of including TDLS in the
5391                  * mask everywhere.
5392                  */
5393                 if (params->sta_flags_mask &
5394                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5395                                   BIT(NL80211_STA_FLAG_MFP) |
5396                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5397                         return -EINVAL;
5398                 break;
5399         case CFG80211_STA_TDLS_PEER_SETUP:
5400         case CFG80211_STA_TDLS_PEER_ACTIVE:
5401                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5402                         return -EINVAL;
5403                 /* ignore since it can't change */
5404                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5405                 break;
5406         default:
5407                 /* disallow mesh-specific things */
5408                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5409                         return -EINVAL;
5410                 if (params->local_pm)
5411                         return -EINVAL;
5412                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5413                         return -EINVAL;
5414         }
5415
5416         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5417             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5418                 /* TDLS can't be set, ... */
5419                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5420                         return -EINVAL;
5421                 /*
5422                  * ... but don't bother the driver with it. This works around
5423                  * a hostapd/wpa_supplicant issue -- it always includes the
5424                  * TLDS_PEER flag in the mask even for AP mode.
5425                  */
5426                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5427         }
5428
5429         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5430             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5431                 /* reject other things that can't change */
5432                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5433                         return -EINVAL;
5434                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5435                         return -EINVAL;
5436                 if (params->supported_rates)
5437                         return -EINVAL;
5438                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5439                     params->he_capa)
5440                         return -EINVAL;
5441         }
5442
5443         if (statype != CFG80211_STA_AP_CLIENT &&
5444             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5445                 if (params->vlan)
5446                         return -EINVAL;
5447         }
5448
5449         switch (statype) {
5450         case CFG80211_STA_AP_MLME_CLIENT:
5451                 /* Use this only for authorizing/unauthorizing a station */
5452                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5453                         return -EOPNOTSUPP;
5454                 break;
5455         case CFG80211_STA_AP_CLIENT:
5456         case CFG80211_STA_AP_CLIENT_UNASSOC:
5457                 /* accept only the listed bits */
5458                 if (params->sta_flags_mask &
5459                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5460                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5461                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5462                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5463                                   BIT(NL80211_STA_FLAG_WME) |
5464                                   BIT(NL80211_STA_FLAG_MFP)))
5465                         return -EINVAL;
5466
5467                 /* but authenticated/associated only if driver handles it */
5468                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5469                     params->sta_flags_mask &
5470                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5471                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5472                         return -EINVAL;
5473                 break;
5474         case CFG80211_STA_IBSS:
5475         case CFG80211_STA_AP_STA:
5476                 /* reject any changes other than AUTHORIZED */
5477                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5478                         return -EINVAL;
5479                 break;
5480         case CFG80211_STA_TDLS_PEER_SETUP:
5481                 /* reject any changes other than AUTHORIZED or WME */
5482                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5483                                                BIT(NL80211_STA_FLAG_WME)))
5484                         return -EINVAL;
5485                 /* force (at least) rates when authorizing */
5486                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5487                     !params->supported_rates)
5488                         return -EINVAL;
5489                 break;
5490         case CFG80211_STA_TDLS_PEER_ACTIVE:
5491                 /* reject any changes */
5492                 return -EINVAL;
5493         case CFG80211_STA_MESH_PEER_KERNEL:
5494                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5495                         return -EINVAL;
5496                 break;
5497         case CFG80211_STA_MESH_PEER_USER:
5498                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5499                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5500                         return -EINVAL;
5501                 break;
5502         }
5503
5504         /*
5505          * Older kernel versions ignored this attribute entirely, so don't
5506          * reject attempts to update it but mark it as unused instead so the
5507          * driver won't look at the data.
5508          */
5509         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5510             statype != CFG80211_STA_TDLS_PEER_SETUP)
5511                 params->opmode_notif_used = false;
5512
5513         return 0;
5514 }
5515 EXPORT_SYMBOL(cfg80211_check_station_change);
5516
5517 /*
5518  * Get vlan interface making sure it is running and on the right wiphy.
5519  */
5520 static struct net_device *get_vlan(struct genl_info *info,
5521                                    struct cfg80211_registered_device *rdev)
5522 {
5523         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5524         struct net_device *v;
5525         int ret;
5526
5527         if (!vlanattr)
5528                 return NULL;
5529
5530         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5531         if (!v)
5532                 return ERR_PTR(-ENODEV);
5533
5534         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5535                 ret = -EINVAL;
5536                 goto error;
5537         }
5538
5539         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5540             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5541             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5542                 ret = -EINVAL;
5543                 goto error;
5544         }
5545
5546         if (!netif_running(v)) {
5547                 ret = -ENETDOWN;
5548                 goto error;
5549         }
5550
5551         return v;
5552  error:
5553         dev_put(v);
5554         return ERR_PTR(ret);
5555 }
5556
5557 static const struct nla_policy
5558 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5559         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5560         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5561 };
5562
5563 static int nl80211_parse_sta_wme(struct genl_info *info,
5564                                  struct station_parameters *params)
5565 {
5566         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5567         struct nlattr *nla;
5568         int err;
5569
5570         /* parse WME attributes if present */
5571         if (!info->attrs[NL80211_ATTR_STA_WME])
5572                 return 0;
5573
5574         nla = info->attrs[NL80211_ATTR_STA_WME];
5575         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5576                                           nl80211_sta_wme_policy,
5577                                           info->extack);
5578         if (err)
5579                 return err;
5580
5581         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5582                 params->uapsd_queues = nla_get_u8(
5583                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5584         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5585                 return -EINVAL;
5586
5587         if (tb[NL80211_STA_WME_MAX_SP])
5588                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5589
5590         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5591                 return -EINVAL;
5592
5593         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5594
5595         return 0;
5596 }
5597
5598 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5599                                       struct station_parameters *params)
5600 {
5601         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5602                 params->supported_channels =
5603                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5604                 params->supported_channels_len =
5605                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5606                 /*
5607                  * Need to include at least one (first channel, number of
5608                  * channels) tuple for each subband, and must have proper
5609                  * tuples for the rest of the data as well.
5610                  */
5611                 if (params->supported_channels_len < 2)
5612                         return -EINVAL;
5613                 if (params->supported_channels_len % 2)
5614                         return -EINVAL;
5615         }
5616
5617         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5618                 params->supported_oper_classes =
5619                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5620                 params->supported_oper_classes_len =
5621                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5622                 /*
5623                  * The value of the Length field of the Supported Operating
5624                  * Classes element is between 2 and 253.
5625                  */
5626                 if (params->supported_oper_classes_len < 2 ||
5627                     params->supported_oper_classes_len > 253)
5628                         return -EINVAL;
5629         }
5630         return 0;
5631 }
5632
5633 static int nl80211_set_station_tdls(struct genl_info *info,
5634                                     struct station_parameters *params)
5635 {
5636         int err;
5637         /* Dummy STA entry gets updated once the peer capabilities are known */
5638         if (info->attrs[NL80211_ATTR_PEER_AID])
5639                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5640         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5641                 params->ht_capa =
5642                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5643         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5644                 params->vht_capa =
5645                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5646         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5647                 params->he_capa =
5648                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5649                 params->he_capa_len =
5650                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5651
5652                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5653                         return -EINVAL;
5654         }
5655
5656         err = nl80211_parse_sta_channel_info(info, params);
5657         if (err)
5658                 return err;
5659
5660         return nl80211_parse_sta_wme(info, params);
5661 }
5662
5663 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5664                                              struct station_parameters *params)
5665 {
5666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5667         int idx;
5668
5669         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5670                 if (!rdev->ops->set_tx_power ||
5671                     !wiphy_ext_feature_isset(&rdev->wiphy,
5672                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5673                         return -EOPNOTSUPP;
5674
5675                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5676                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5677
5678                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5679                         idx = NL80211_ATTR_STA_TX_POWER;
5680
5681                         if (info->attrs[idx])
5682                                 params->txpwr.power =
5683                                         nla_get_s16(info->attrs[idx]);
5684                         else
5685                                 return -EINVAL;
5686                 }
5687                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5688         }
5689
5690         return 0;
5691 }
5692
5693 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5694 {
5695         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5696         struct net_device *dev = info->user_ptr[1];
5697         struct station_parameters params;
5698         u8 *mac_addr;
5699         int err;
5700
5701         memset(&params, 0, sizeof(params));
5702
5703         if (!rdev->ops->change_station)
5704                 return -EOPNOTSUPP;
5705
5706         /*
5707          * AID and listen_interval properties can be set only for unassociated
5708          * station. Include these parameters here and will check them in
5709          * cfg80211_check_station_change().
5710          */
5711         if (info->attrs[NL80211_ATTR_STA_AID])
5712                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5713
5714         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5715                 params.listen_interval =
5716                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5717         else
5718                 params.listen_interval = -1;
5719
5720         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5721                 params.support_p2p_ps =
5722                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5723         else
5724                 params.support_p2p_ps = -1;
5725
5726         if (!info->attrs[NL80211_ATTR_MAC])
5727                 return -EINVAL;
5728
5729         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5730
5731         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5732                 params.supported_rates =
5733                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5734                 params.supported_rates_len =
5735                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5736         }
5737
5738         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5739                 params.capability =
5740                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5741                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5742         }
5743
5744         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5745                 params.ext_capab =
5746                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5747                 params.ext_capab_len =
5748                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5749         }
5750
5751         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5752                 return -EINVAL;
5753
5754         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5755                 params.plink_action =
5756                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5757
5758         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5759                 params.plink_state =
5760                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5761                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5762                         params.peer_aid = nla_get_u16(
5763                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5764                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5765         }
5766
5767         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5768                 params.local_pm = nla_get_u32(
5769                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5770
5771         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5772                 params.opmode_notif_used = true;
5773                 params.opmode_notif =
5774                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5775         }
5776
5777         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5778                 params.airtime_weight =
5779                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5780
5781         if (params.airtime_weight &&
5782             !wiphy_ext_feature_isset(&rdev->wiphy,
5783                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5784                 return -EOPNOTSUPP;
5785
5786         err = nl80211_parse_sta_txpower_setting(info, &params);
5787         if (err)
5788                 return err;
5789
5790         /* Include parameters for TDLS peer (will check later) */
5791         err = nl80211_set_station_tdls(info, &params);
5792         if (err)
5793                 return err;
5794
5795         params.vlan = get_vlan(info, rdev);
5796         if (IS_ERR(params.vlan))
5797                 return PTR_ERR(params.vlan);
5798
5799         switch (dev->ieee80211_ptr->iftype) {
5800         case NL80211_IFTYPE_AP:
5801         case NL80211_IFTYPE_AP_VLAN:
5802         case NL80211_IFTYPE_P2P_GO:
5803         case NL80211_IFTYPE_P2P_CLIENT:
5804         case NL80211_IFTYPE_STATION:
5805         case NL80211_IFTYPE_ADHOC:
5806         case NL80211_IFTYPE_MESH_POINT:
5807                 break;
5808         default:
5809                 err = -EOPNOTSUPP;
5810                 goto out_put_vlan;
5811         }
5812
5813         /* driver will call cfg80211_check_station_change() */
5814         err = rdev_change_station(rdev, dev, mac_addr, &params);
5815
5816  out_put_vlan:
5817         if (params.vlan)
5818                 dev_put(params.vlan);
5819
5820         return err;
5821 }
5822
5823 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5824 {
5825         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5826         int err;
5827         struct net_device *dev = info->user_ptr[1];
5828         struct station_parameters params;
5829         u8 *mac_addr = NULL;
5830         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5831                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5832
5833         memset(&params, 0, sizeof(params));
5834
5835         if (!rdev->ops->add_station)
5836                 return -EOPNOTSUPP;
5837
5838         if (!info->attrs[NL80211_ATTR_MAC])
5839                 return -EINVAL;
5840
5841         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5842                 return -EINVAL;
5843
5844         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5845                 return -EINVAL;
5846
5847         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5848             !info->attrs[NL80211_ATTR_PEER_AID])
5849                 return -EINVAL;
5850
5851         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5852         params.supported_rates =
5853                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5854         params.supported_rates_len =
5855                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5856         params.listen_interval =
5857                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5858
5859         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5860                 params.support_p2p_ps =
5861                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5862         } else {
5863                 /*
5864                  * if not specified, assume it's supported for P2P GO interface,
5865                  * and is NOT supported for AP interface
5866                  */
5867                 params.support_p2p_ps =
5868                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5869         }
5870
5871         if (info->attrs[NL80211_ATTR_PEER_AID])
5872                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5873         else
5874                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5875
5876         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5877                 params.capability =
5878                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5879                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5880         }
5881
5882         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5883                 params.ext_capab =
5884                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5885                 params.ext_capab_len =
5886                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5887         }
5888
5889         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5890                 params.ht_capa =
5891                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5892
5893         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5894                 params.vht_capa =
5895                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5896
5897         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5898                 params.he_capa =
5899                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5900                 params.he_capa_len =
5901                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5902
5903                 /* max len is validated in nla policy */
5904                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5905                         return -EINVAL;
5906         }
5907
5908         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5909                 params.opmode_notif_used = true;
5910                 params.opmode_notif =
5911                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5912         }
5913
5914         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5915                 params.plink_action =
5916                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5917
5918         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5919                 params.airtime_weight =
5920                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5921
5922         if (params.airtime_weight &&
5923             !wiphy_ext_feature_isset(&rdev->wiphy,
5924                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5925                 return -EOPNOTSUPP;
5926
5927         err = nl80211_parse_sta_txpower_setting(info, &params);
5928         if (err)
5929                 return err;
5930
5931         err = nl80211_parse_sta_channel_info(info, &params);
5932         if (err)
5933                 return err;
5934
5935         err = nl80211_parse_sta_wme(info, &params);
5936         if (err)
5937                 return err;
5938
5939         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5940                 return -EINVAL;
5941
5942         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5943          * as userspace might just pass through the capabilities from the IEs
5944          * directly, rather than enforcing this restriction and returning an
5945          * error in this case.
5946          */
5947         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5948                 params.ht_capa = NULL;
5949                 params.vht_capa = NULL;
5950
5951                 /* HE requires WME */
5952                 if (params.he_capa_len)
5953                         return -EINVAL;
5954         }
5955
5956         /* When you run into this, adjust the code below for the new flag */
5957         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5958
5959         switch (dev->ieee80211_ptr->iftype) {
5960         case NL80211_IFTYPE_AP:
5961         case NL80211_IFTYPE_AP_VLAN:
5962         case NL80211_IFTYPE_P2P_GO:
5963                 /* ignore WME attributes if iface/sta is not capable */
5964                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5965                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5966                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5967
5968                 /* TDLS peers cannot be added */
5969                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5970                     info->attrs[NL80211_ATTR_PEER_AID])
5971                         return -EINVAL;
5972                 /* but don't bother the driver with it */
5973                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5974
5975                 /* allow authenticated/associated only if driver handles it */
5976                 if (!(rdev->wiphy.features &
5977                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5978                     params.sta_flags_mask & auth_assoc)
5979                         return -EINVAL;
5980
5981                 /* Older userspace, or userspace wanting to be compatible with
5982                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5983                  * and assoc flags in the mask, but assumes the station will be
5984                  * added as associated anyway since this was the required driver
5985                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5986                  * introduced.
5987                  * In order to not bother drivers with this quirk in the API
5988                  * set the flags in both the mask and set for new stations in
5989                  * this case.
5990                  */
5991                 if (!(params.sta_flags_mask & auth_assoc)) {
5992                         params.sta_flags_mask |= auth_assoc;
5993                         params.sta_flags_set |= auth_assoc;
5994                 }
5995
5996                 /* must be last in here for error handling */
5997                 params.vlan = get_vlan(info, rdev);
5998                 if (IS_ERR(params.vlan))
5999                         return PTR_ERR(params.vlan);
6000                 break;
6001         case NL80211_IFTYPE_MESH_POINT:
6002                 /* ignore uAPSD data */
6003                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6004
6005                 /* associated is disallowed */
6006                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6007                         return -EINVAL;
6008                 /* TDLS peers cannot be added */
6009                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6010                     info->attrs[NL80211_ATTR_PEER_AID])
6011                         return -EINVAL;
6012                 break;
6013         case NL80211_IFTYPE_STATION:
6014         case NL80211_IFTYPE_P2P_CLIENT:
6015                 /* ignore uAPSD data */
6016                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6017
6018                 /* these are disallowed */
6019                 if (params.sta_flags_mask &
6020                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6021                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6022                         return -EINVAL;
6023                 /* Only TDLS peers can be added */
6024                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6025                         return -EINVAL;
6026                 /* Can only add if TDLS ... */
6027                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6028                         return -EOPNOTSUPP;
6029                 /* ... with external setup is supported */
6030                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6031                         return -EOPNOTSUPP;
6032                 /*
6033                  * Older wpa_supplicant versions always mark the TDLS peer
6034                  * as authorized, but it shouldn't yet be.
6035                  */
6036                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6037                 break;
6038         default:
6039                 return -EOPNOTSUPP;
6040         }
6041
6042         /* be aware of params.vlan when changing code here */
6043
6044         err = rdev_add_station(rdev, dev, mac_addr, &params);
6045
6046         if (params.vlan)
6047                 dev_put(params.vlan);
6048         return err;
6049 }
6050
6051 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6052 {
6053         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6054         struct net_device *dev = info->user_ptr[1];
6055         struct station_del_parameters params;
6056
6057         memset(&params, 0, sizeof(params));
6058
6059         if (info->attrs[NL80211_ATTR_MAC])
6060                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6061
6062         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6063             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6064             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6065             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6066                 return -EINVAL;
6067
6068         if (!rdev->ops->del_station)
6069                 return -EOPNOTSUPP;
6070
6071         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6072                 params.subtype =
6073                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6074                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6075                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6076                         return -EINVAL;
6077         } else {
6078                 /* Default to Deauthentication frame */
6079                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6080         }
6081
6082         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6083                 params.reason_code =
6084                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6085                 if (params.reason_code == 0)
6086                         return -EINVAL; /* 0 is reserved */
6087         } else {
6088                 /* Default to reason code 2 */
6089                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6090         }
6091
6092         return rdev_del_station(rdev, dev, &params);
6093 }
6094
6095 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6096                                 int flags, struct net_device *dev,
6097                                 u8 *dst, u8 *next_hop,
6098                                 struct mpath_info *pinfo)
6099 {
6100         void *hdr;
6101         struct nlattr *pinfoattr;
6102
6103         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6104         if (!hdr)
6105                 return -1;
6106
6107         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6108             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6109             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6110             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6111                 goto nla_put_failure;
6112
6113         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6114         if (!pinfoattr)
6115                 goto nla_put_failure;
6116         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6117             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6118                         pinfo->frame_qlen))
6119                 goto nla_put_failure;
6120         if (((pinfo->filled & MPATH_INFO_SN) &&
6121              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6122             ((pinfo->filled & MPATH_INFO_METRIC) &&
6123              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6124                          pinfo->metric)) ||
6125             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6126              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6127                          pinfo->exptime)) ||
6128             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6129              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6130                         pinfo->flags)) ||
6131             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6132              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6133                          pinfo->discovery_timeout)) ||
6134             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6135              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6136                         pinfo->discovery_retries)) ||
6137             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6138              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6139                         pinfo->hop_count)) ||
6140             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6141              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6142                          pinfo->path_change_count)))
6143                 goto nla_put_failure;
6144
6145         nla_nest_end(msg, pinfoattr);
6146
6147         genlmsg_end(msg, hdr);
6148         return 0;
6149
6150  nla_put_failure:
6151         genlmsg_cancel(msg, hdr);
6152         return -EMSGSIZE;
6153 }
6154
6155 static int nl80211_dump_mpath(struct sk_buff *skb,
6156                               struct netlink_callback *cb)
6157 {
6158         struct mpath_info pinfo;
6159         struct cfg80211_registered_device *rdev;
6160         struct wireless_dev *wdev;
6161         u8 dst[ETH_ALEN];
6162         u8 next_hop[ETH_ALEN];
6163         int path_idx = cb->args[2];
6164         int err;
6165
6166         rtnl_lock();
6167         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6168         if (err)
6169                 goto out_err;
6170
6171         if (!rdev->ops->dump_mpath) {
6172                 err = -EOPNOTSUPP;
6173                 goto out_err;
6174         }
6175
6176         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6177                 err = -EOPNOTSUPP;
6178                 goto out_err;
6179         }
6180
6181         while (1) {
6182                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6183                                       next_hop, &pinfo);
6184                 if (err == -ENOENT)
6185                         break;
6186                 if (err)
6187                         goto out_err;
6188
6189                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6190                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6191                                        wdev->netdev, dst, next_hop,
6192                                        &pinfo) < 0)
6193                         goto out;
6194
6195                 path_idx++;
6196         }
6197
6198  out:
6199         cb->args[2] = path_idx;
6200         err = skb->len;
6201  out_err:
6202         rtnl_unlock();
6203         return err;
6204 }
6205
6206 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6207 {
6208         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6209         int err;
6210         struct net_device *dev = info->user_ptr[1];
6211         struct mpath_info pinfo;
6212         struct sk_buff *msg;
6213         u8 *dst = NULL;
6214         u8 next_hop[ETH_ALEN];
6215
6216         memset(&pinfo, 0, sizeof(pinfo));
6217
6218         if (!info->attrs[NL80211_ATTR_MAC])
6219                 return -EINVAL;
6220
6221         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6222
6223         if (!rdev->ops->get_mpath)
6224                 return -EOPNOTSUPP;
6225
6226         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6227                 return -EOPNOTSUPP;
6228
6229         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6230         if (err)
6231                 return err;
6232
6233         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6234         if (!msg)
6235                 return -ENOMEM;
6236
6237         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6238                                  dev, dst, next_hop, &pinfo) < 0) {
6239                 nlmsg_free(msg);
6240                 return -ENOBUFS;
6241         }
6242
6243         return genlmsg_reply(msg, info);
6244 }
6245
6246 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6247 {
6248         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6249         struct net_device *dev = info->user_ptr[1];
6250         u8 *dst = NULL;
6251         u8 *next_hop = NULL;
6252
6253         if (!info->attrs[NL80211_ATTR_MAC])
6254                 return -EINVAL;
6255
6256         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6257                 return -EINVAL;
6258
6259         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6260         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6261
6262         if (!rdev->ops->change_mpath)
6263                 return -EOPNOTSUPP;
6264
6265         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6266                 return -EOPNOTSUPP;
6267
6268         return rdev_change_mpath(rdev, dev, dst, next_hop);
6269 }
6270
6271 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6272 {
6273         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6274         struct net_device *dev = info->user_ptr[1];
6275         u8 *dst = NULL;
6276         u8 *next_hop = NULL;
6277
6278         if (!info->attrs[NL80211_ATTR_MAC])
6279                 return -EINVAL;
6280
6281         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6282                 return -EINVAL;
6283
6284         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6285         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6286
6287         if (!rdev->ops->add_mpath)
6288                 return -EOPNOTSUPP;
6289
6290         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6291                 return -EOPNOTSUPP;
6292
6293         return rdev_add_mpath(rdev, dev, dst, next_hop);
6294 }
6295
6296 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6297 {
6298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6299         struct net_device *dev = info->user_ptr[1];
6300         u8 *dst = NULL;
6301
6302         if (info->attrs[NL80211_ATTR_MAC])
6303                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6304
6305         if (!rdev->ops->del_mpath)
6306                 return -EOPNOTSUPP;
6307
6308         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6309                 return -EOPNOTSUPP;
6310
6311         return rdev_del_mpath(rdev, dev, dst);
6312 }
6313
6314 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6315 {
6316         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6317         int err;
6318         struct net_device *dev = info->user_ptr[1];
6319         struct mpath_info pinfo;
6320         struct sk_buff *msg;
6321         u8 *dst = NULL;
6322         u8 mpp[ETH_ALEN];
6323
6324         memset(&pinfo, 0, sizeof(pinfo));
6325
6326         if (!info->attrs[NL80211_ATTR_MAC])
6327                 return -EINVAL;
6328
6329         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6330
6331         if (!rdev->ops->get_mpp)
6332                 return -EOPNOTSUPP;
6333
6334         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6335                 return -EOPNOTSUPP;
6336
6337         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6338         if (err)
6339                 return err;
6340
6341         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6342         if (!msg)
6343                 return -ENOMEM;
6344
6345         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6346                                dev, dst, mpp, &pinfo) < 0) {
6347                 nlmsg_free(msg);
6348                 return -ENOBUFS;
6349         }
6350
6351         return genlmsg_reply(msg, info);
6352 }
6353
6354 static int nl80211_dump_mpp(struct sk_buff *skb,
6355                             struct netlink_callback *cb)
6356 {
6357         struct mpath_info pinfo;
6358         struct cfg80211_registered_device *rdev;
6359         struct wireless_dev *wdev;
6360         u8 dst[ETH_ALEN];
6361         u8 mpp[ETH_ALEN];
6362         int path_idx = cb->args[2];
6363         int err;
6364
6365         rtnl_lock();
6366         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6367         if (err)
6368                 goto out_err;
6369
6370         if (!rdev->ops->dump_mpp) {
6371                 err = -EOPNOTSUPP;
6372                 goto out_err;
6373         }
6374
6375         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6376                 err = -EOPNOTSUPP;
6377                 goto out_err;
6378         }
6379
6380         while (1) {
6381                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6382                                     mpp, &pinfo);
6383                 if (err == -ENOENT)
6384                         break;
6385                 if (err)
6386                         goto out_err;
6387
6388                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6389                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6390                                        wdev->netdev, dst, mpp,
6391                                        &pinfo) < 0)
6392                         goto out;
6393
6394                 path_idx++;
6395         }
6396
6397  out:
6398         cb->args[2] = path_idx;
6399         err = skb->len;
6400  out_err:
6401         rtnl_unlock();
6402         return err;
6403 }
6404
6405 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6406 {
6407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6408         struct net_device *dev = info->user_ptr[1];
6409         struct wireless_dev *wdev = dev->ieee80211_ptr;
6410         struct bss_parameters params;
6411         int err;
6412
6413         memset(&params, 0, sizeof(params));
6414         /* default to not changing parameters */
6415         params.use_cts_prot = -1;
6416         params.use_short_preamble = -1;
6417         params.use_short_slot_time = -1;
6418         params.ap_isolate = -1;
6419         params.ht_opmode = -1;
6420         params.p2p_ctwindow = -1;
6421         params.p2p_opp_ps = -1;
6422
6423         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6424                 params.use_cts_prot =
6425                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6426         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6427                 params.use_short_preamble =
6428                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6429         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6430                 params.use_short_slot_time =
6431                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6432         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6433                 params.basic_rates =
6434                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6435                 params.basic_rates_len =
6436                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6437         }
6438         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6439                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6440         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6441                 params.ht_opmode =
6442                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6443
6444         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6445                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6446                         return -EINVAL;
6447                 params.p2p_ctwindow =
6448                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6449                 if (params.p2p_ctwindow != 0 &&
6450                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6451                         return -EINVAL;
6452         }
6453
6454         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6455                 u8 tmp;
6456
6457                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6458                         return -EINVAL;
6459                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6460                 params.p2p_opp_ps = tmp;
6461                 if (params.p2p_opp_ps &&
6462                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6463                         return -EINVAL;
6464         }
6465
6466         if (!rdev->ops->change_bss)
6467                 return -EOPNOTSUPP;
6468
6469         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6470             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6471                 return -EOPNOTSUPP;
6472
6473         wdev_lock(wdev);
6474         err = rdev_change_bss(rdev, dev, &params);
6475         wdev_unlock(wdev);
6476
6477         return err;
6478 }
6479
6480 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6481 {
6482         char *data = NULL;
6483         bool is_indoor;
6484         enum nl80211_user_reg_hint_type user_reg_hint_type;
6485         u32 owner_nlportid;
6486
6487         /*
6488          * You should only get this when cfg80211 hasn't yet initialized
6489          * completely when built-in to the kernel right between the time
6490          * window between nl80211_init() and regulatory_init(), if that is
6491          * even possible.
6492          */
6493         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6494                 return -EINPROGRESS;
6495
6496         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6497                 user_reg_hint_type =
6498                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6499         else
6500                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6501
6502         switch (user_reg_hint_type) {
6503         case NL80211_USER_REG_HINT_USER:
6504         case NL80211_USER_REG_HINT_CELL_BASE:
6505                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6506                         return -EINVAL;
6507
6508                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6509                 return regulatory_hint_user(data, user_reg_hint_type);
6510         case NL80211_USER_REG_HINT_INDOOR:
6511                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6512                         owner_nlportid = info->snd_portid;
6513                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6514                 } else {
6515                         owner_nlportid = 0;
6516                         is_indoor = true;
6517                 }
6518
6519                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6520         default:
6521                 return -EINVAL;
6522         }
6523 }
6524
6525 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6526 {
6527         return reg_reload_regdb();
6528 }
6529
6530 static int nl80211_get_mesh_config(struct sk_buff *skb,
6531                                    struct genl_info *info)
6532 {
6533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6534         struct net_device *dev = info->user_ptr[1];
6535         struct wireless_dev *wdev = dev->ieee80211_ptr;
6536         struct mesh_config cur_params;
6537         int err = 0;
6538         void *hdr;
6539         struct nlattr *pinfoattr;
6540         struct sk_buff *msg;
6541
6542         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6543                 return -EOPNOTSUPP;
6544
6545         if (!rdev->ops->get_mesh_config)
6546                 return -EOPNOTSUPP;
6547
6548         wdev_lock(wdev);
6549         /* If not connected, get default parameters */
6550         if (!wdev->mesh_id_len)
6551                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6552         else
6553                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6554         wdev_unlock(wdev);
6555
6556         if (err)
6557                 return err;
6558
6559         /* Draw up a netlink message to send back */
6560         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6561         if (!msg)
6562                 return -ENOMEM;
6563         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6564                              NL80211_CMD_GET_MESH_CONFIG);
6565         if (!hdr)
6566                 goto out;
6567         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6568         if (!pinfoattr)
6569                 goto nla_put_failure;
6570         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6571             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6572                         cur_params.dot11MeshRetryTimeout) ||
6573             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6574                         cur_params.dot11MeshConfirmTimeout) ||
6575             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6576                         cur_params.dot11MeshHoldingTimeout) ||
6577             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6578                         cur_params.dot11MeshMaxPeerLinks) ||
6579             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6580                        cur_params.dot11MeshMaxRetries) ||
6581             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6582                        cur_params.dot11MeshTTL) ||
6583             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6584                        cur_params.element_ttl) ||
6585             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6586                        cur_params.auto_open_plinks) ||
6587             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6588                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6589             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6590                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6591             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6592                         cur_params.path_refresh_time) ||
6593             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6594                         cur_params.min_discovery_timeout) ||
6595             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6596                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6597             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6598                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6599             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6600                         cur_params.dot11MeshHWMPperrMinInterval) ||
6601             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6602                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6603             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6604                        cur_params.dot11MeshHWMPRootMode) ||
6605             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6606                         cur_params.dot11MeshHWMPRannInterval) ||
6607             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6608                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6609             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6610                        cur_params.dot11MeshForwarding) ||
6611             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6612                         cur_params.rssi_threshold) ||
6613             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6614                         cur_params.ht_opmode) ||
6615             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6616                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6617             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6618                         cur_params.dot11MeshHWMProotInterval) ||
6619             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6620                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6621             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6622                         cur_params.power_mode) ||
6623             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6624                         cur_params.dot11MeshAwakeWindowDuration) ||
6625             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6626                         cur_params.plink_timeout) ||
6627             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6628                        cur_params.dot11MeshConnectedToMeshGate))
6629                 goto nla_put_failure;
6630         nla_nest_end(msg, pinfoattr);
6631         genlmsg_end(msg, hdr);
6632         return genlmsg_reply(msg, info);
6633
6634  nla_put_failure:
6635  out:
6636         nlmsg_free(msg);
6637         return -ENOBUFS;
6638 }
6639
6640 static const struct nla_policy
6641 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6642         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6643                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6644         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6645                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6646         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6647                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6648         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6649                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6650         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6651         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6652         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6653         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6654         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6655                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6656         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6657         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6658         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6659         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6660         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6661                 NLA_POLICY_MIN(NLA_U16, 1),
6662         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6663                 NLA_POLICY_MIN(NLA_U16, 1),
6664         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6665                 NLA_POLICY_MIN(NLA_U16, 1),
6666         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6667         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6668                 NLA_POLICY_MIN(NLA_U16, 1),
6669         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6670         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6671         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6672                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6673         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6674         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6675         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6676                 NLA_POLICY_MIN(NLA_U16, 1),
6677         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6678                 NLA_POLICY_MIN(NLA_U16, 1),
6679         [NL80211_MESHCONF_POWER_MODE] =
6680                 NLA_POLICY_RANGE(NLA_U32,
6681                                  NL80211_MESH_POWER_ACTIVE,
6682                                  NL80211_MESH_POWER_MAX),
6683         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6684         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6685         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6686 };
6687
6688 static const struct nla_policy
6689         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6690         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6691         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6692         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6693         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6694         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6695         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6696         [NL80211_MESH_SETUP_IE] =
6697                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6698                                        IEEE80211_MAX_DATA_LEN),
6699         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6700 };
6701
6702 static int nl80211_parse_mesh_config(struct genl_info *info,
6703                                      struct mesh_config *cfg,
6704                                      u32 *mask_out)
6705 {
6706         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6707         u32 mask = 0;
6708         u16 ht_opmode;
6709
6710 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6711 do {                                                                    \
6712         if (tb[attr]) {                                                 \
6713                 cfg->param = fn(tb[attr]);                              \
6714                 mask |= BIT((attr) - 1);                                \
6715         }                                                               \
6716 } while (0)
6717
6718         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6719                 return -EINVAL;
6720         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6721                 return -EINVAL;
6722
6723         /* This makes sure that there aren't more than 32 mesh config
6724          * parameters (otherwise our bitfield scheme would not work.) */
6725         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6726
6727         /* Fill in the params struct */
6728         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6729                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6730         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6731                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6732                                   nla_get_u16);
6733         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6734                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6735                                   nla_get_u16);
6736         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6737                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6738                                   nla_get_u16);
6739         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6740                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6741         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6742                                   NL80211_MESHCONF_TTL, nla_get_u8);
6743         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6744                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6745         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6746                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6747                                   nla_get_u8);
6748         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6749                                   mask,
6750                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6751                                   nla_get_u32);
6752         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6753                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6754                                   nla_get_u8);
6755         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6756                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6757                                   nla_get_u32);
6758         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6759             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6760                 return -EINVAL;
6761         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6762                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6763                                   nla_get_u16);
6764         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6765                                   mask,
6766                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6767                                   nla_get_u32);
6768         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6769             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6770              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6771                 return -EINVAL;
6772         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6773                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6774                                   nla_get_u16);
6775         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6776                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6777                                   nla_get_u16);
6778         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6779                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6780                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6781                                   nla_get_u16);
6782         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6783                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6784         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6785                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6786                                   nla_get_u16);
6787         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6788                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6789                                   nla_get_u8);
6790         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6791                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6792         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6793                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6794                                   nla_get_s32);
6795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6796                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6797                                   nla_get_u8);
6798         /*
6799          * Check HT operation mode based on
6800          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6801          */
6802         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6803                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6804
6805                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6806                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6807                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6808                         return -EINVAL;
6809
6810                 /* NON_HT_STA bit is reserved, but some programs set it */
6811                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6812
6813                 cfg->ht_opmode = ht_opmode;
6814                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6815         }
6816         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6817                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6818                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6819                                   nla_get_u32);
6820         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6821             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6822              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6823                 return -EINVAL;
6824         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6825                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6826                                   nla_get_u16);
6827         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6828                                   mask,
6829                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6830                                   nla_get_u16);
6831         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6832                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6833         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6834                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6835         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6836                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6837         if (mask_out)
6838                 *mask_out = mask;
6839
6840         return 0;
6841
6842 #undef FILL_IN_MESH_PARAM_IF_SET
6843 }
6844
6845 static int nl80211_parse_mesh_setup(struct genl_info *info,
6846                                      struct mesh_setup *setup)
6847 {
6848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6849         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6850
6851         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6852                 return -EINVAL;
6853         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6854                 return -EINVAL;
6855
6856         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6857                 setup->sync_method =
6858                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6859                  IEEE80211_SYNC_METHOD_VENDOR :
6860                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6861
6862         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6863                 setup->path_sel_proto =
6864                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6865                  IEEE80211_PATH_PROTOCOL_VENDOR :
6866                  IEEE80211_PATH_PROTOCOL_HWMP;
6867
6868         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6869                 setup->path_metric =
6870                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6871                  IEEE80211_PATH_METRIC_VENDOR :
6872                  IEEE80211_PATH_METRIC_AIRTIME;
6873
6874         if (tb[NL80211_MESH_SETUP_IE]) {
6875                 struct nlattr *ieattr =
6876                         tb[NL80211_MESH_SETUP_IE];
6877                 setup->ie = nla_data(ieattr);
6878                 setup->ie_len = nla_len(ieattr);
6879         }
6880         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6881             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6882                 return -EINVAL;
6883         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6884         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6885         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6886         if (setup->is_secure)
6887                 setup->user_mpm = true;
6888
6889         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6890                 if (!setup->user_mpm)
6891                         return -EINVAL;
6892                 setup->auth_id =
6893                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6894         }
6895
6896         return 0;
6897 }
6898
6899 static int nl80211_update_mesh_config(struct sk_buff *skb,
6900                                       struct genl_info *info)
6901 {
6902         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6903         struct net_device *dev = info->user_ptr[1];
6904         struct wireless_dev *wdev = dev->ieee80211_ptr;
6905         struct mesh_config cfg;
6906         u32 mask;
6907         int err;
6908
6909         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6910                 return -EOPNOTSUPP;
6911
6912         if (!rdev->ops->update_mesh_config)
6913                 return -EOPNOTSUPP;
6914
6915         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6916         if (err)
6917                 return err;
6918
6919         wdev_lock(wdev);
6920         if (!wdev->mesh_id_len)
6921                 err = -ENOLINK;
6922
6923         if (!err)
6924                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6925
6926         wdev_unlock(wdev);
6927
6928         return err;
6929 }
6930
6931 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6932                               struct sk_buff *msg)
6933 {
6934         struct nlattr *nl_reg_rules;
6935         unsigned int i;
6936
6937         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6938             (regdom->dfs_region &&
6939              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6940                 goto nla_put_failure;
6941
6942         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6943         if (!nl_reg_rules)
6944                 goto nla_put_failure;
6945
6946         for (i = 0; i < regdom->n_reg_rules; i++) {
6947                 struct nlattr *nl_reg_rule;
6948                 const struct ieee80211_reg_rule *reg_rule;
6949                 const struct ieee80211_freq_range *freq_range;
6950                 const struct ieee80211_power_rule *power_rule;
6951                 unsigned int max_bandwidth_khz;
6952
6953                 reg_rule = &regdom->reg_rules[i];
6954                 freq_range = &reg_rule->freq_range;
6955                 power_rule = &reg_rule->power_rule;
6956
6957                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6958                 if (!nl_reg_rule)
6959                         goto nla_put_failure;
6960
6961                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6962                 if (!max_bandwidth_khz)
6963                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6964                                                                   reg_rule);
6965
6966                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6967                                 reg_rule->flags) ||
6968                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6969                                 freq_range->start_freq_khz) ||
6970                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6971                                 freq_range->end_freq_khz) ||
6972                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6973                                 max_bandwidth_khz) ||
6974                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6975                                 power_rule->max_antenna_gain) ||
6976                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6977                                 power_rule->max_eirp) ||
6978                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6979                                 reg_rule->dfs_cac_ms))
6980                         goto nla_put_failure;
6981
6982                 nla_nest_end(msg, nl_reg_rule);
6983         }
6984
6985         nla_nest_end(msg, nl_reg_rules);
6986         return 0;
6987
6988 nla_put_failure:
6989         return -EMSGSIZE;
6990 }
6991
6992 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6993 {
6994         const struct ieee80211_regdomain *regdom = NULL;
6995         struct cfg80211_registered_device *rdev;
6996         struct wiphy *wiphy = NULL;
6997         struct sk_buff *msg;
6998         void *hdr;
6999
7000         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7001         if (!msg)
7002                 return -ENOBUFS;
7003
7004         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7005                              NL80211_CMD_GET_REG);
7006         if (!hdr)
7007                 goto put_failure;
7008
7009         if (info->attrs[NL80211_ATTR_WIPHY]) {
7010                 bool self_managed;
7011
7012                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7013                 if (IS_ERR(rdev)) {
7014                         nlmsg_free(msg);
7015                         return PTR_ERR(rdev);
7016                 }
7017
7018                 wiphy = &rdev->wiphy;
7019                 self_managed = wiphy->regulatory_flags &
7020                                REGULATORY_WIPHY_SELF_MANAGED;
7021                 regdom = get_wiphy_regdom(wiphy);
7022
7023                 /* a self-managed-reg device must have a private regdom */
7024                 if (WARN_ON(!regdom && self_managed)) {
7025                         nlmsg_free(msg);
7026                         return -EINVAL;
7027                 }
7028
7029                 if (regdom &&
7030                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7031                         goto nla_put_failure;
7032         }
7033
7034         if (!wiphy && reg_last_request_cell_base() &&
7035             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7036                         NL80211_USER_REG_HINT_CELL_BASE))
7037                 goto nla_put_failure;
7038
7039         rcu_read_lock();
7040
7041         if (!regdom)
7042                 regdom = rcu_dereference(cfg80211_regdomain);
7043
7044         if (nl80211_put_regdom(regdom, msg))
7045                 goto nla_put_failure_rcu;
7046
7047         rcu_read_unlock();
7048
7049         genlmsg_end(msg, hdr);
7050         return genlmsg_reply(msg, info);
7051
7052 nla_put_failure_rcu:
7053         rcu_read_unlock();
7054 nla_put_failure:
7055 put_failure:
7056         nlmsg_free(msg);
7057         return -EMSGSIZE;
7058 }
7059
7060 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7061                                u32 seq, int flags, struct wiphy *wiphy,
7062                                const struct ieee80211_regdomain *regdom)
7063 {
7064         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7065                                    NL80211_CMD_GET_REG);
7066
7067         if (!hdr)
7068                 return -1;
7069
7070         genl_dump_check_consistent(cb, hdr);
7071
7072         if (nl80211_put_regdom(regdom, msg))
7073                 goto nla_put_failure;
7074
7075         if (!wiphy && reg_last_request_cell_base() &&
7076             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7077                         NL80211_USER_REG_HINT_CELL_BASE))
7078                 goto nla_put_failure;
7079
7080         if (wiphy &&
7081             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7082                 goto nla_put_failure;
7083
7084         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7085             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7086                 goto nla_put_failure;
7087
7088         genlmsg_end(msg, hdr);
7089         return 0;
7090
7091 nla_put_failure:
7092         genlmsg_cancel(msg, hdr);
7093         return -EMSGSIZE;
7094 }
7095
7096 static int nl80211_get_reg_dump(struct sk_buff *skb,
7097                                 struct netlink_callback *cb)
7098 {
7099         const struct ieee80211_regdomain *regdom = NULL;
7100         struct cfg80211_registered_device *rdev;
7101         int err, reg_idx, start = cb->args[2];
7102
7103         rtnl_lock();
7104
7105         if (cfg80211_regdomain && start == 0) {
7106                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7107                                           NLM_F_MULTI, NULL,
7108                                           rtnl_dereference(cfg80211_regdomain));
7109                 if (err < 0)
7110                         goto out_err;
7111         }
7112
7113         /* the global regdom is idx 0 */
7114         reg_idx = 1;
7115         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7116                 regdom = get_wiphy_regdom(&rdev->wiphy);
7117                 if (!regdom)
7118                         continue;
7119
7120                 if (++reg_idx <= start)
7121                         continue;
7122
7123                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7124                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7125                 if (err < 0) {
7126                         reg_idx--;
7127                         break;
7128                 }
7129         }
7130
7131         cb->args[2] = reg_idx;
7132         err = skb->len;
7133 out_err:
7134         rtnl_unlock();
7135         return err;
7136 }
7137
7138 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7139 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7140         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7141         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7142         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7143         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7144         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7145         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7146         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7147 };
7148
7149 static int parse_reg_rule(struct nlattr *tb[],
7150         struct ieee80211_reg_rule *reg_rule)
7151 {
7152         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7153         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7154
7155         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7156                 return -EINVAL;
7157         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7158                 return -EINVAL;
7159         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7160                 return -EINVAL;
7161         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7162                 return -EINVAL;
7163         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7164                 return -EINVAL;
7165
7166         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7167
7168         freq_range->start_freq_khz =
7169                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7170         freq_range->end_freq_khz =
7171                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7172         freq_range->max_bandwidth_khz =
7173                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7174
7175         power_rule->max_eirp =
7176                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7177
7178         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7179                 power_rule->max_antenna_gain =
7180                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7181
7182         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7183                 reg_rule->dfs_cac_ms =
7184                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7185
7186         return 0;
7187 }
7188
7189 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7190 {
7191         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7192         struct nlattr *nl_reg_rule;
7193         char *alpha2;
7194         int rem_reg_rules, r;
7195         u32 num_rules = 0, rule_idx = 0;
7196         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7197         struct ieee80211_regdomain *rd;
7198
7199         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7200                 return -EINVAL;
7201
7202         if (!info->attrs[NL80211_ATTR_REG_RULES])
7203                 return -EINVAL;
7204
7205         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7206
7207         if (info->attrs[NL80211_ATTR_DFS_REGION])
7208                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7209
7210         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7211                             rem_reg_rules) {
7212                 num_rules++;
7213                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7214                         return -EINVAL;
7215         }
7216
7217         if (!reg_is_valid_request(alpha2))
7218                 return -EINVAL;
7219
7220         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7221         if (!rd)
7222                 return -ENOMEM;
7223
7224         rd->n_reg_rules = num_rules;
7225         rd->alpha2[0] = alpha2[0];
7226         rd->alpha2[1] = alpha2[1];
7227
7228         /*
7229          * Disable DFS master mode if the DFS region was
7230          * not supported or known on this kernel.
7231          */
7232         if (reg_supported_dfs_region(dfs_region))
7233                 rd->dfs_region = dfs_region;
7234
7235         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7236                             rem_reg_rules) {
7237                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7238                                                 nl_reg_rule, reg_rule_policy,
7239                                                 info->extack);
7240                 if (r)
7241                         goto bad_reg;
7242                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7243                 if (r)
7244                         goto bad_reg;
7245
7246                 rule_idx++;
7247
7248                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7249                         r = -EINVAL;
7250                         goto bad_reg;
7251                 }
7252         }
7253
7254         /* set_regdom takes ownership of rd */
7255         return set_regdom(rd, REGD_SOURCE_CRDA);
7256  bad_reg:
7257         kfree(rd);
7258         return r;
7259 }
7260 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7261
7262 static int validate_scan_freqs(struct nlattr *freqs)
7263 {
7264         struct nlattr *attr1, *attr2;
7265         int n_channels = 0, tmp1, tmp2;
7266
7267         nla_for_each_nested(attr1, freqs, tmp1)
7268                 if (nla_len(attr1) != sizeof(u32))
7269                         return 0;
7270
7271         nla_for_each_nested(attr1, freqs, tmp1) {
7272                 n_channels++;
7273                 /*
7274                  * Some hardware has a limited channel list for
7275                  * scanning, and it is pretty much nonsensical
7276                  * to scan for a channel twice, so disallow that
7277                  * and don't require drivers to check that the
7278                  * channel list they get isn't longer than what
7279                  * they can scan, as long as they can scan all
7280                  * the channels they registered at once.
7281                  */
7282                 nla_for_each_nested(attr2, freqs, tmp2)
7283                         if (attr1 != attr2 &&
7284                             nla_get_u32(attr1) == nla_get_u32(attr2))
7285                                 return 0;
7286         }
7287
7288         return n_channels;
7289 }
7290
7291 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7292 {
7293         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7294 }
7295
7296 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7297                             struct cfg80211_bss_selection *bss_select)
7298 {
7299         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7300         struct nlattr *nest;
7301         int err;
7302         bool found = false;
7303         int i;
7304
7305         /* only process one nested attribute */
7306         nest = nla_data(nla);
7307         if (!nla_ok(nest, nla_len(nest)))
7308                 return -EINVAL;
7309
7310         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7311                                           nest, nl80211_bss_select_policy,
7312                                           NULL);
7313         if (err)
7314                 return err;
7315
7316         /* only one attribute may be given */
7317         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7318                 if (attr[i]) {
7319                         if (found)
7320                                 return -EINVAL;
7321                         found = true;
7322                 }
7323         }
7324
7325         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7326
7327         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7328                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7329
7330         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7331                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7332                 bss_select->param.band_pref =
7333                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7334                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7335                         return -EINVAL;
7336         }
7337
7338         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7339                 struct nl80211_bss_select_rssi_adjust *adj_param;
7340
7341                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7342                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7343                 bss_select->param.adjust.band = adj_param->band;
7344                 bss_select->param.adjust.delta = adj_param->delta;
7345                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7346                         return -EINVAL;
7347         }
7348
7349         /* user-space did not provide behaviour attribute */
7350         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7351                 return -EINVAL;
7352
7353         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7354                 return -EINVAL;
7355
7356         return 0;
7357 }
7358
7359 int nl80211_parse_random_mac(struct nlattr **attrs,
7360                              u8 *mac_addr, u8 *mac_addr_mask)
7361 {
7362         int i;
7363
7364         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7365                 eth_zero_addr(mac_addr);
7366                 eth_zero_addr(mac_addr_mask);
7367                 mac_addr[0] = 0x2;
7368                 mac_addr_mask[0] = 0x3;
7369
7370                 return 0;
7371         }
7372
7373         /* need both or none */
7374         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7375                 return -EINVAL;
7376
7377         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7378         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7379
7380         /* don't allow or configure an mcast address */
7381         if (!is_multicast_ether_addr(mac_addr_mask) ||
7382             is_multicast_ether_addr(mac_addr))
7383                 return -EINVAL;
7384
7385         /*
7386          * allow users to pass a MAC address that has bits set outside
7387          * of the mask, but don't bother drivers with having to deal
7388          * with such bits
7389          */
7390         for (i = 0; i < ETH_ALEN; i++)
7391                 mac_addr[i] &= mac_addr_mask[i];
7392
7393         return 0;
7394 }
7395
7396 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7397 {
7398         ASSERT_WDEV_LOCK(wdev);
7399
7400         if (!cfg80211_beaconing_iface_active(wdev))
7401                 return true;
7402
7403         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7404                 return true;
7405
7406         return regulatory_pre_cac_allowed(wdev->wiphy);
7407 }
7408
7409 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7410                                     enum nl80211_ext_feature_index feat)
7411 {
7412         if (!(flags & flag))
7413                 return true;
7414         if (wiphy_ext_feature_isset(wiphy, feat))
7415                 return true;
7416         return false;
7417 }
7418
7419 static int
7420 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7421                          void *request, struct nlattr **attrs,
7422                          bool is_sched_scan)
7423 {
7424         u8 *mac_addr, *mac_addr_mask;
7425         u32 *flags;
7426         enum nl80211_feature_flags randomness_flag;
7427
7428         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7429                 return 0;
7430
7431         if (is_sched_scan) {
7432                 struct cfg80211_sched_scan_request *req = request;
7433
7434                 randomness_flag = wdev ?
7435                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7436                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7437                 flags = &req->flags;
7438                 mac_addr = req->mac_addr;
7439                 mac_addr_mask = req->mac_addr_mask;
7440         } else {
7441                 struct cfg80211_scan_request *req = request;
7442
7443                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7444                 flags = &req->flags;
7445                 mac_addr = req->mac_addr;
7446                 mac_addr_mask = req->mac_addr_mask;
7447         }
7448
7449         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7450
7451         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7452              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7453             !nl80211_check_scan_feat(wiphy, *flags,
7454                                      NL80211_SCAN_FLAG_LOW_SPAN,
7455                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7456             !nl80211_check_scan_feat(wiphy, *flags,
7457                                      NL80211_SCAN_FLAG_LOW_POWER,
7458                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7459             !nl80211_check_scan_feat(wiphy, *flags,
7460                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7461                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7462             !nl80211_check_scan_feat(wiphy, *flags,
7463                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7464                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7465             !nl80211_check_scan_feat(wiphy, *flags,
7466                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7467                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7468             !nl80211_check_scan_feat(wiphy, *flags,
7469                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7470                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7471             !nl80211_check_scan_feat(wiphy, *flags,
7472                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7473                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7474             !nl80211_check_scan_feat(wiphy, *flags,
7475                                      NL80211_SCAN_FLAG_RANDOM_SN,
7476                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7477             !nl80211_check_scan_feat(wiphy, *flags,
7478                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7479                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7480                 return -EOPNOTSUPP;
7481
7482         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7483                 int err;
7484
7485                 if (!(wiphy->features & randomness_flag) ||
7486                     (wdev && wdev->current_bss))
7487                         return -EOPNOTSUPP;
7488
7489                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7490                 if (err)
7491                         return err;
7492         }
7493
7494         return 0;
7495 }
7496
7497 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7498 {
7499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7500         struct wireless_dev *wdev = info->user_ptr[1];
7501         struct cfg80211_scan_request *request;
7502         struct nlattr *attr;
7503         struct wiphy *wiphy;
7504         int err, tmp, n_ssids = 0, n_channels, i;
7505         size_t ie_len;
7506
7507         wiphy = &rdev->wiphy;
7508
7509         if (wdev->iftype == NL80211_IFTYPE_NAN)
7510                 return -EOPNOTSUPP;
7511
7512         if (!rdev->ops->scan)
7513                 return -EOPNOTSUPP;
7514
7515         if (rdev->scan_req || rdev->scan_msg) {
7516                 err = -EBUSY;
7517                 goto unlock;
7518         }
7519
7520         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7521                 n_channels = validate_scan_freqs(
7522                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7523                 if (!n_channels) {
7524                         err = -EINVAL;
7525                         goto unlock;
7526                 }
7527         } else {
7528                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7529         }
7530
7531         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7532                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7533                         n_ssids++;
7534
7535         if (n_ssids > wiphy->max_scan_ssids) {
7536                 err = -EINVAL;
7537                 goto unlock;
7538         }
7539
7540         if (info->attrs[NL80211_ATTR_IE])
7541                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7542         else
7543                 ie_len = 0;
7544
7545         if (ie_len > wiphy->max_scan_ie_len) {
7546                 err = -EINVAL;
7547                 goto unlock;
7548         }
7549
7550         request = kzalloc(sizeof(*request)
7551                         + sizeof(*request->ssids) * n_ssids
7552                         + sizeof(*request->channels) * n_channels
7553                         + ie_len, GFP_KERNEL);
7554         if (!request) {
7555                 err = -ENOMEM;
7556                 goto unlock;
7557         }
7558
7559         if (n_ssids)
7560                 request->ssids = (void *)&request->channels[n_channels];
7561         request->n_ssids = n_ssids;
7562         if (ie_len) {
7563                 if (n_ssids)
7564                         request->ie = (void *)(request->ssids + n_ssids);
7565                 else
7566                         request->ie = (void *)(request->channels + n_channels);
7567         }
7568
7569         i = 0;
7570         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7571                 /* user specified, bail out if channel not found */
7572                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7573                         struct ieee80211_channel *chan;
7574
7575                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7576
7577                         if (!chan) {
7578                                 err = -EINVAL;
7579                                 goto out_free;
7580                         }
7581
7582                         /* ignore disabled channels */
7583                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7584                                 continue;
7585
7586                         request->channels[i] = chan;
7587                         i++;
7588                 }
7589         } else {
7590                 enum nl80211_band band;
7591
7592                 /* all channels */
7593                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7594                         int j;
7595
7596                         if (!wiphy->bands[band])
7597                                 continue;
7598                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7599                                 struct ieee80211_channel *chan;
7600
7601                                 chan = &wiphy->bands[band]->channels[j];
7602
7603                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7604                                         continue;
7605
7606                                 request->channels[i] = chan;
7607                                 i++;
7608                         }
7609                 }
7610         }
7611
7612         if (!i) {
7613                 err = -EINVAL;
7614                 goto out_free;
7615         }
7616
7617         request->n_channels = i;
7618
7619         wdev_lock(wdev);
7620         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7621                 struct ieee80211_channel *chan;
7622
7623                 if (request->n_channels != 1) {
7624                         wdev_unlock(wdev);
7625                         err = -EBUSY;
7626                         goto out_free;
7627                 }
7628
7629                 chan = request->channels[0];
7630                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7631                         wdev_unlock(wdev);
7632                         err = -EBUSY;
7633                         goto out_free;
7634                 }
7635         }
7636         wdev_unlock(wdev);
7637
7638         i = 0;
7639         if (n_ssids) {
7640                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7641                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7642                                 err = -EINVAL;
7643                                 goto out_free;
7644                         }
7645                         request->ssids[i].ssid_len = nla_len(attr);
7646                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7647                         i++;
7648                 }
7649         }
7650
7651         if (info->attrs[NL80211_ATTR_IE]) {
7652                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7653                 memcpy((void *)request->ie,
7654                        nla_data(info->attrs[NL80211_ATTR_IE]),
7655                        request->ie_len);
7656         }
7657
7658         for (i = 0; i < NUM_NL80211_BANDS; i++)
7659                 if (wiphy->bands[i])
7660                         request->rates[i] =
7661                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7662
7663         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7664                 nla_for_each_nested(attr,
7665                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7666                                     tmp) {
7667                         enum nl80211_band band = nla_type(attr);
7668
7669                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7670                                 err = -EINVAL;
7671                                 goto out_free;
7672                         }
7673
7674                         if (!wiphy->bands[band])
7675                                 continue;
7676
7677                         err = ieee80211_get_ratemask(wiphy->bands[band],
7678                                                      nla_data(attr),
7679                                                      nla_len(attr),
7680                                                      &request->rates[band]);
7681                         if (err)
7682                                 goto out_free;
7683                 }
7684         }
7685
7686         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7687                 if (!wiphy_ext_feature_isset(wiphy,
7688                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7689                         err = -EOPNOTSUPP;
7690                         goto out_free;
7691                 }
7692
7693                 request->duration =
7694                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7695                 request->duration_mandatory =
7696                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7697         }
7698
7699         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7700                                        false);
7701         if (err)
7702                 goto out_free;
7703
7704         request->no_cck =
7705                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7706
7707         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7708          * BSSID to scan for. This was problematic because that same attribute
7709          * was already used for another purpose (local random MAC address). The
7710          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7711          * compatibility with older userspace components, also use the
7712          * NL80211_ATTR_MAC value here if it can be determined to be used for
7713          * the specific BSSID use case instead of the random MAC address
7714          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7715          */
7716         if (info->attrs[NL80211_ATTR_BSSID])
7717                 memcpy(request->bssid,
7718                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7719         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7720                  info->attrs[NL80211_ATTR_MAC])
7721                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7722                        ETH_ALEN);
7723         else
7724                 eth_broadcast_addr(request->bssid);
7725
7726         request->wdev = wdev;
7727         request->wiphy = &rdev->wiphy;
7728         request->scan_start = jiffies;
7729
7730         rdev->scan_req = request;
7731         err = rdev_scan(rdev, request);
7732
7733         if (!err) {
7734                 nl80211_send_scan_start(rdev, wdev);
7735                 if (wdev->netdev)
7736                         dev_hold(wdev->netdev);
7737         } else {
7738  out_free:
7739                 rdev->scan_req = NULL;
7740                 kfree(request);
7741         }
7742
7743  unlock:
7744         return err;
7745 }
7746
7747 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7748 {
7749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7750         struct wireless_dev *wdev = info->user_ptr[1];
7751
7752         if (!rdev->ops->abort_scan)
7753                 return -EOPNOTSUPP;
7754
7755         if (rdev->scan_msg)
7756                 return 0;
7757
7758         if (!rdev->scan_req)
7759                 return -ENOENT;
7760
7761         rdev_abort_scan(rdev, wdev);
7762         return 0;
7763 }
7764
7765 static int
7766 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7767                                struct cfg80211_sched_scan_request *request,
7768                                struct nlattr **attrs)
7769 {
7770         int tmp, err, i = 0;
7771         struct nlattr *attr;
7772
7773         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7774                 u32 interval;
7775
7776                 /*
7777                  * If scan plans are not specified,
7778                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7779                  * case one scan plan will be set with the specified scan
7780                  * interval and infinite number of iterations.
7781                  */
7782                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7783                 if (!interval)
7784                         return -EINVAL;
7785
7786                 request->scan_plans[0].interval =
7787                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7788                 if (!request->scan_plans[0].interval)
7789                         return -EINVAL;
7790
7791                 if (request->scan_plans[0].interval >
7792                     wiphy->max_sched_scan_plan_interval)
7793                         request->scan_plans[0].interval =
7794                                 wiphy->max_sched_scan_plan_interval;
7795
7796                 return 0;
7797         }
7798
7799         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7800                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7801
7802                 if (WARN_ON(i >= n_plans))
7803                         return -EINVAL;
7804
7805                 err = nla_parse_nested_deprecated(plan,
7806                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7807                                                   attr, nl80211_plan_policy,
7808                                                   NULL);
7809                 if (err)
7810                         return err;
7811
7812                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7813                         return -EINVAL;
7814
7815                 request->scan_plans[i].interval =
7816                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7817                 if (!request->scan_plans[i].interval ||
7818                     request->scan_plans[i].interval >
7819                     wiphy->max_sched_scan_plan_interval)
7820                         return -EINVAL;
7821
7822                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7823                         request->scan_plans[i].iterations =
7824                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7825                         if (!request->scan_plans[i].iterations ||
7826                             (request->scan_plans[i].iterations >
7827                              wiphy->max_sched_scan_plan_iterations))
7828                                 return -EINVAL;
7829                 } else if (i < n_plans - 1) {
7830                         /*
7831                          * All scan plans but the last one must specify
7832                          * a finite number of iterations
7833                          */
7834                         return -EINVAL;
7835                 }
7836
7837                 i++;
7838         }
7839
7840         /*
7841          * The last scan plan must not specify the number of
7842          * iterations, it is supposed to run infinitely
7843          */
7844         if (request->scan_plans[n_plans - 1].iterations)
7845                 return  -EINVAL;
7846
7847         return 0;
7848 }
7849
7850 static int
7851 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7852                                        struct cfg80211_match_set *match_sets,
7853                                        struct nlattr *tb_band_rssi,
7854                                        s32 rssi_thold)
7855 {
7856         struct nlattr *attr;
7857         int i, tmp, ret = 0;
7858
7859         if (!wiphy_ext_feature_isset(wiphy,
7860                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7861                 if (tb_band_rssi)
7862                         ret = -EOPNOTSUPP;
7863                 else
7864                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7865                                 match_sets->per_band_rssi_thold[i] =
7866                                         NL80211_SCAN_RSSI_THOLD_OFF;
7867                 return ret;
7868         }
7869
7870         for (i = 0; i < NUM_NL80211_BANDS; i++)
7871                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7872
7873         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7874                 enum nl80211_band band = nla_type(attr);
7875
7876                 if (band < 0 || band >= NUM_NL80211_BANDS)
7877                         return -EINVAL;
7878
7879                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7880         }
7881
7882         return 0;
7883 }
7884
7885 static struct cfg80211_sched_scan_request *
7886 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7887                          struct nlattr **attrs, int max_match_sets)
7888 {
7889         struct cfg80211_sched_scan_request *request;
7890         struct nlattr *attr;
7891         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7892         enum nl80211_band band;
7893         size_t ie_len;
7894         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7895         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7896
7897         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7898                 n_channels = validate_scan_freqs(
7899                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7900                 if (!n_channels)
7901                         return ERR_PTR(-EINVAL);
7902         } else {
7903                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7904         }
7905
7906         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7907                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7908                                     tmp)
7909                         n_ssids++;
7910
7911         if (n_ssids > wiphy->max_sched_scan_ssids)
7912                 return ERR_PTR(-EINVAL);
7913
7914         /*
7915          * First, count the number of 'real' matchsets. Due to an issue with
7916          * the old implementation, matchsets containing only the RSSI attribute
7917          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7918          * RSSI for all matchsets, rather than their own matchset for reporting
7919          * all APs with a strong RSSI. This is needed to be compatible with
7920          * older userspace that treated a matchset with only the RSSI as the
7921          * global RSSI for all other matchsets - if there are other matchsets.
7922          */
7923         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7924                 nla_for_each_nested(attr,
7925                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7926                                     tmp) {
7927                         struct nlattr *rssi;
7928
7929                         err = nla_parse_nested_deprecated(tb,
7930                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7931                                                           attr,
7932                                                           nl80211_match_policy,
7933                                                           NULL);
7934                         if (err)
7935                                 return ERR_PTR(err);
7936
7937                         /* SSID and BSSID are mutually exclusive */
7938                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7939                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7940                                 return ERR_PTR(-EINVAL);
7941
7942                         /* add other standalone attributes here */
7943                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7944                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7945                                 n_match_sets++;
7946                                 continue;
7947                         }
7948                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7949                         if (rssi)
7950                                 default_match_rssi = nla_get_s32(rssi);
7951                 }
7952         }
7953
7954         /* However, if there's no other matchset, add the RSSI one */
7955         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7956                 n_match_sets = 1;
7957
7958         if (n_match_sets > max_match_sets)
7959                 return ERR_PTR(-EINVAL);
7960
7961         if (attrs[NL80211_ATTR_IE])
7962                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7963         else
7964                 ie_len = 0;
7965
7966         if (ie_len > wiphy->max_sched_scan_ie_len)
7967                 return ERR_PTR(-EINVAL);
7968
7969         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7970                 /*
7971                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7972                  * each scan plan already specifies its own interval
7973                  */
7974                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7975                         return ERR_PTR(-EINVAL);
7976
7977                 nla_for_each_nested(attr,
7978                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7979                         n_plans++;
7980         } else {
7981                 /*
7982                  * The scan interval attribute is kept for backward
7983                  * compatibility. If no scan plans are specified and sched scan
7984                  * interval is specified, one scan plan will be set with this
7985                  * scan interval and infinite number of iterations.
7986                  */
7987                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7988                         return ERR_PTR(-EINVAL);
7989
7990                 n_plans = 1;
7991         }
7992
7993         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7994                 return ERR_PTR(-EINVAL);
7995
7996         if (!wiphy_ext_feature_isset(
7997                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7998             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7999              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8000                 return ERR_PTR(-EINVAL);
8001
8002         request = kzalloc(sizeof(*request)
8003                         + sizeof(*request->ssids) * n_ssids
8004                         + sizeof(*request->match_sets) * n_match_sets
8005                         + sizeof(*request->scan_plans) * n_plans
8006                         + sizeof(*request->channels) * n_channels
8007                         + ie_len, GFP_KERNEL);
8008         if (!request)
8009                 return ERR_PTR(-ENOMEM);
8010
8011         if (n_ssids)
8012                 request->ssids = (void *)&request->channels[n_channels];
8013         request->n_ssids = n_ssids;
8014         if (ie_len) {
8015                 if (n_ssids)
8016                         request->ie = (void *)(request->ssids + n_ssids);
8017                 else
8018                         request->ie = (void *)(request->channels + n_channels);
8019         }
8020
8021         if (n_match_sets) {
8022                 if (request->ie)
8023                         request->match_sets = (void *)(request->ie + ie_len);
8024                 else if (n_ssids)
8025                         request->match_sets =
8026                                 (void *)(request->ssids + n_ssids);
8027                 else
8028                         request->match_sets =
8029                                 (void *)(request->channels + n_channels);
8030         }
8031         request->n_match_sets = n_match_sets;
8032
8033         if (n_match_sets)
8034                 request->scan_plans = (void *)(request->match_sets +
8035                                                n_match_sets);
8036         else if (request->ie)
8037                 request->scan_plans = (void *)(request->ie + ie_len);
8038         else if (n_ssids)
8039                 request->scan_plans = (void *)(request->ssids + n_ssids);
8040         else
8041                 request->scan_plans = (void *)(request->channels + n_channels);
8042
8043         request->n_scan_plans = n_plans;
8044
8045         i = 0;
8046         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8047                 /* user specified, bail out if channel not found */
8048                 nla_for_each_nested(attr,
8049                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8050                                     tmp) {
8051                         struct ieee80211_channel *chan;
8052
8053                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8054
8055                         if (!chan) {
8056                                 err = -EINVAL;
8057                                 goto out_free;
8058                         }
8059
8060                         /* ignore disabled channels */
8061                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8062                                 continue;
8063
8064                         request->channels[i] = chan;
8065                         i++;
8066                 }
8067         } else {
8068                 /* all channels */
8069                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8070                         int j;
8071
8072                         if (!wiphy->bands[band])
8073                                 continue;
8074                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8075                                 struct ieee80211_channel *chan;
8076
8077                                 chan = &wiphy->bands[band]->channels[j];
8078
8079                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8080                                         continue;
8081
8082                                 request->channels[i] = chan;
8083                                 i++;
8084                         }
8085                 }
8086         }
8087
8088         if (!i) {
8089                 err = -EINVAL;
8090                 goto out_free;
8091         }
8092
8093         request->n_channels = i;
8094
8095         i = 0;
8096         if (n_ssids) {
8097                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8098                                     tmp) {
8099                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8100                                 err = -EINVAL;
8101                                 goto out_free;
8102                         }
8103                         request->ssids[i].ssid_len = nla_len(attr);
8104                         memcpy(request->ssids[i].ssid, nla_data(attr),
8105                                nla_len(attr));
8106                         i++;
8107                 }
8108         }
8109
8110         i = 0;
8111         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8112                 nla_for_each_nested(attr,
8113                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8114                                     tmp) {
8115                         struct nlattr *ssid, *bssid, *rssi;
8116
8117                         err = nla_parse_nested_deprecated(tb,
8118                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8119                                                           attr,
8120                                                           nl80211_match_policy,
8121                                                           NULL);
8122                         if (err)
8123                                 goto out_free;
8124                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8125                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8126
8127                         if (!ssid && !bssid) {
8128                                 i++;
8129                                 continue;
8130                         }
8131
8132                         if (WARN_ON(i >= n_match_sets)) {
8133                                 /* this indicates a programming error,
8134                                  * the loop above should have verified
8135                                  * things properly
8136                                  */
8137                                 err = -EINVAL;
8138                                 goto out_free;
8139                         }
8140
8141                         if (ssid) {
8142                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8143                                         err = -EINVAL;
8144                                         goto out_free;
8145                                 }
8146                                 memcpy(request->match_sets[i].ssid.ssid,
8147                                        nla_data(ssid), nla_len(ssid));
8148                                 request->match_sets[i].ssid.ssid_len =
8149                                         nla_len(ssid);
8150                         }
8151                         if (bssid) {
8152                                 if (nla_len(bssid) != ETH_ALEN) {
8153                                         err = -EINVAL;
8154                                         goto out_free;
8155                                 }
8156                                 memcpy(request->match_sets[i].bssid,
8157                                        nla_data(bssid), ETH_ALEN);
8158                         }
8159
8160                         /* special attribute - old implementation w/a */
8161                         request->match_sets[i].rssi_thold = default_match_rssi;
8162                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8163                         if (rssi)
8164                                 request->match_sets[i].rssi_thold =
8165                                         nla_get_s32(rssi);
8166
8167                         /* Parse per band RSSI attribute */
8168                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8169                                 &request->match_sets[i],
8170                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8171                                 request->match_sets[i].rssi_thold);
8172                         if (err)
8173                                 goto out_free;
8174
8175                         i++;
8176                 }
8177
8178                 /* there was no other matchset, so the RSSI one is alone */
8179                 if (i == 0 && n_match_sets)
8180                         request->match_sets[0].rssi_thold = default_match_rssi;
8181
8182                 request->min_rssi_thold = INT_MAX;
8183                 for (i = 0; i < n_match_sets; i++)
8184                         request->min_rssi_thold =
8185                                 min(request->match_sets[i].rssi_thold,
8186                                     request->min_rssi_thold);
8187         } else {
8188                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8189         }
8190
8191         if (ie_len) {
8192                 request->ie_len = ie_len;
8193                 memcpy((void *)request->ie,
8194                        nla_data(attrs[NL80211_ATTR_IE]),
8195                        request->ie_len);
8196         }
8197
8198         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8199         if (err)
8200                 goto out_free;
8201
8202         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8203                 request->delay =
8204                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8205
8206         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8207                 request->relative_rssi = nla_get_s8(
8208                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8209                 request->relative_rssi_set = true;
8210         }
8211
8212         if (request->relative_rssi_set &&
8213             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8214                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8215
8216                 rssi_adjust = nla_data(
8217                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8218                 request->rssi_adjust.band = rssi_adjust->band;
8219                 request->rssi_adjust.delta = rssi_adjust->delta;
8220                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8221                         err = -EINVAL;
8222                         goto out_free;
8223                 }
8224         }
8225
8226         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8227         if (err)
8228                 goto out_free;
8229
8230         request->scan_start = jiffies;
8231
8232         return request;
8233
8234 out_free:
8235         kfree(request);
8236         return ERR_PTR(err);
8237 }
8238
8239 static int nl80211_start_sched_scan(struct sk_buff *skb,
8240                                     struct genl_info *info)
8241 {
8242         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8243         struct net_device *dev = info->user_ptr[1];
8244         struct wireless_dev *wdev = dev->ieee80211_ptr;
8245         struct cfg80211_sched_scan_request *sched_scan_req;
8246         bool want_multi;
8247         int err;
8248
8249         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8250                 return -EOPNOTSUPP;
8251
8252         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8253         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8254         if (err)
8255                 return err;
8256
8257         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8258                                                   info->attrs,
8259                                                   rdev->wiphy.max_match_sets);
8260
8261         err = PTR_ERR_OR_ZERO(sched_scan_req);
8262         if (err)
8263                 goto out_err;
8264
8265         /* leave request id zero for legacy request
8266          * or if driver does not support multi-scheduled scan
8267          */
8268         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8269                 while (!sched_scan_req->reqid)
8270                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8271         }
8272
8273         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8274         if (err)
8275                 goto out_free;
8276
8277         sched_scan_req->dev = dev;
8278         sched_scan_req->wiphy = &rdev->wiphy;
8279
8280         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8281                 sched_scan_req->owner_nlportid = info->snd_portid;
8282
8283         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8284
8285         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8286         return 0;
8287
8288 out_free:
8289         kfree(sched_scan_req);
8290 out_err:
8291         return err;
8292 }
8293
8294 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8295                                    struct genl_info *info)
8296 {
8297         struct cfg80211_sched_scan_request *req;
8298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8299         u64 cookie;
8300
8301         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8302                 return -EOPNOTSUPP;
8303
8304         if (info->attrs[NL80211_ATTR_COOKIE]) {
8305                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8306                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8307         }
8308
8309         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8310                                      struct cfg80211_sched_scan_request,
8311                                      list);
8312         if (!req || req->reqid ||
8313             (req->owner_nlportid &&
8314              req->owner_nlportid != info->snd_portid))
8315                 return -ENOENT;
8316
8317         return cfg80211_stop_sched_scan_req(rdev, req, false);
8318 }
8319
8320 static int nl80211_start_radar_detection(struct sk_buff *skb,
8321                                          struct genl_info *info)
8322 {
8323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8324         struct net_device *dev = info->user_ptr[1];
8325         struct wireless_dev *wdev = dev->ieee80211_ptr;
8326         struct wiphy *wiphy = wdev->wiphy;
8327         struct cfg80211_chan_def chandef;
8328         enum nl80211_dfs_regions dfs_region;
8329         unsigned int cac_time_ms;
8330         int err;
8331
8332         dfs_region = reg_get_dfs_region(wiphy);
8333         if (dfs_region == NL80211_DFS_UNSET)
8334                 return -EINVAL;
8335
8336         err = nl80211_parse_chandef(rdev, info, &chandef);
8337         if (err)
8338                 return err;
8339
8340         if (netif_carrier_ok(dev))
8341                 return -EBUSY;
8342
8343         if (wdev->cac_started)
8344                 return -EBUSY;
8345
8346         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8347         if (err < 0)
8348                 return err;
8349
8350         if (err == 0)
8351                 return -EINVAL;
8352
8353         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8354                 return -EINVAL;
8355
8356         /* CAC start is offloaded to HW and can't be started manually */
8357         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8358                 return -EOPNOTSUPP;
8359
8360         if (!rdev->ops->start_radar_detection)
8361                 return -EOPNOTSUPP;
8362
8363         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8364         if (WARN_ON(!cac_time_ms))
8365                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8366
8367         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8368         if (!err) {
8369                 wdev->chandef = chandef;
8370                 wdev->cac_started = true;
8371                 wdev->cac_start_time = jiffies;
8372                 wdev->cac_time_ms = cac_time_ms;
8373         }
8374         return err;
8375 }
8376
8377 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8378                                           struct genl_info *info)
8379 {
8380         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8381         struct net_device *dev = info->user_ptr[1];
8382         struct wireless_dev *wdev = dev->ieee80211_ptr;
8383         struct wiphy *wiphy = wdev->wiphy;
8384         struct cfg80211_chan_def chandef;
8385         enum nl80211_dfs_regions dfs_region;
8386         int err;
8387
8388         dfs_region = reg_get_dfs_region(wiphy);
8389         if (dfs_region == NL80211_DFS_UNSET) {
8390                 GENL_SET_ERR_MSG(info,
8391                                  "DFS Region is not set. Unexpected Radar indication");
8392                 return -EINVAL;
8393         }
8394
8395         err = nl80211_parse_chandef(rdev, info, &chandef);
8396         if (err) {
8397                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8398                 return err;
8399         }
8400
8401         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8402         if (err < 0) {
8403                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8404                 return err;
8405         }
8406
8407         if (err == 0) {
8408                 GENL_SET_ERR_MSG(info,
8409                                  "Unexpected Radar indication for chandef/iftype");
8410                 return -EINVAL;
8411         }
8412
8413         /* Do not process this notification if radar is already detected
8414          * by kernel on this channel, and return success.
8415          */
8416         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8417                 return 0;
8418
8419         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8420
8421         cfg80211_sched_dfs_chan_update(rdev);
8422
8423         rdev->radar_chandef = chandef;
8424
8425         /* Propagate this notification to other radios as well */
8426         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8427
8428         return 0;
8429 }
8430
8431 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8432 {
8433         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8434         struct net_device *dev = info->user_ptr[1];
8435         struct wireless_dev *wdev = dev->ieee80211_ptr;
8436         struct cfg80211_csa_settings params;
8437         /* csa_attrs is defined static to avoid waste of stack size - this
8438          * function is called under RTNL lock, so this should not be a problem.
8439          */
8440         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8441         int err;
8442         bool need_new_beacon = false;
8443         bool need_handle_dfs_flag = true;
8444         int len, i;
8445         u32 cs_count;
8446
8447         if (!rdev->ops->channel_switch ||
8448             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8449                 return -EOPNOTSUPP;
8450
8451         switch (dev->ieee80211_ptr->iftype) {
8452         case NL80211_IFTYPE_AP:
8453         case NL80211_IFTYPE_P2P_GO:
8454                 need_new_beacon = true;
8455                 /* For all modes except AP the handle_dfs flag needs to be
8456                  * supplied to tell the kernel that userspace will handle radar
8457                  * events when they happen. Otherwise a switch to a channel
8458                  * requiring DFS will be rejected.
8459                  */
8460                 need_handle_dfs_flag = false;
8461
8462                 /* useless if AP is not running */
8463                 if (!wdev->beacon_interval)
8464                         return -ENOTCONN;
8465                 break;
8466         case NL80211_IFTYPE_ADHOC:
8467                 if (!wdev->ssid_len)
8468                         return -ENOTCONN;
8469                 break;
8470         case NL80211_IFTYPE_MESH_POINT:
8471                 if (!wdev->mesh_id_len)
8472                         return -ENOTCONN;
8473                 break;
8474         default:
8475                 return -EOPNOTSUPP;
8476         }
8477
8478         memset(&params, 0, sizeof(params));
8479         params.beacon_csa.ftm_responder = -1;
8480
8481         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8482             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8483                 return -EINVAL;
8484
8485         /* only important for AP, IBSS and mesh create IEs internally */
8486         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8487                 return -EINVAL;
8488
8489         /* Even though the attribute is u32, the specification says
8490          * u8, so let's make sure we don't overflow.
8491          */
8492         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8493         if (cs_count > 255)
8494                 return -EINVAL;
8495
8496         params.count = cs_count;
8497
8498         if (!need_new_beacon)
8499                 goto skip_beacons;
8500
8501         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8502         if (err)
8503                 return err;
8504
8505         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8506                                           info->attrs[NL80211_ATTR_CSA_IES],
8507                                           nl80211_policy, info->extack);
8508         if (err)
8509                 return err;
8510
8511         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8512         if (err)
8513                 return err;
8514
8515         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8516                 return -EINVAL;
8517
8518         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8519         if (!len || (len % sizeof(u16)))
8520                 return -EINVAL;
8521
8522         params.n_counter_offsets_beacon = len / sizeof(u16);
8523         if (rdev->wiphy.max_num_csa_counters &&
8524             (params.n_counter_offsets_beacon >
8525              rdev->wiphy.max_num_csa_counters))
8526                 return -EINVAL;
8527
8528         params.counter_offsets_beacon =
8529                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8530
8531         /* sanity checks - counters should fit and be the same */
8532         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8533                 u16 offset = params.counter_offsets_beacon[i];
8534
8535                 if (offset >= params.beacon_csa.tail_len)
8536                         return -EINVAL;
8537
8538                 if (params.beacon_csa.tail[offset] != params.count)
8539                         return -EINVAL;
8540         }
8541
8542         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8543                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8544                 if (!len || (len % sizeof(u16)))
8545                         return -EINVAL;
8546
8547                 params.n_counter_offsets_presp = len / sizeof(u16);
8548                 if (rdev->wiphy.max_num_csa_counters &&
8549                     (params.n_counter_offsets_presp >
8550                      rdev->wiphy.max_num_csa_counters))
8551                         return -EINVAL;
8552
8553                 params.counter_offsets_presp =
8554                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8555
8556                 /* sanity checks - counters should fit and be the same */
8557                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8558                         u16 offset = params.counter_offsets_presp[i];
8559
8560                         if (offset >= params.beacon_csa.probe_resp_len)
8561                                 return -EINVAL;
8562
8563                         if (params.beacon_csa.probe_resp[offset] !=
8564                             params.count)
8565                                 return -EINVAL;
8566                 }
8567         }
8568
8569 skip_beacons:
8570         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8571         if (err)
8572                 return err;
8573
8574         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8575                                            wdev->iftype))
8576                 return -EINVAL;
8577
8578         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8579                                             &params.chandef,
8580                                             wdev->iftype);
8581         if (err < 0)
8582                 return err;
8583
8584         if (err > 0) {
8585                 params.radar_required = true;
8586                 if (need_handle_dfs_flag &&
8587                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8588                         return -EINVAL;
8589                 }
8590         }
8591
8592         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8593                 params.block_tx = true;
8594
8595         wdev_lock(wdev);
8596         err = rdev_channel_switch(rdev, dev, &params);
8597         wdev_unlock(wdev);
8598
8599         return err;
8600 }
8601
8602 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8603                             u32 seq, int flags,
8604                             struct cfg80211_registered_device *rdev,
8605                             struct wireless_dev *wdev,
8606                             struct cfg80211_internal_bss *intbss)
8607 {
8608         struct cfg80211_bss *res = &intbss->pub;
8609         const struct cfg80211_bss_ies *ies;
8610         void *hdr;
8611         struct nlattr *bss;
8612
8613         ASSERT_WDEV_LOCK(wdev);
8614
8615         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8616                              NL80211_CMD_NEW_SCAN_RESULTS);
8617         if (!hdr)
8618                 return -1;
8619
8620         genl_dump_check_consistent(cb, hdr);
8621
8622         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8623                 goto nla_put_failure;
8624         if (wdev->netdev &&
8625             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8626                 goto nla_put_failure;
8627         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8628                               NL80211_ATTR_PAD))
8629                 goto nla_put_failure;
8630
8631         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8632         if (!bss)
8633                 goto nla_put_failure;
8634         if ((!is_zero_ether_addr(res->bssid) &&
8635              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8636                 goto nla_put_failure;
8637
8638         rcu_read_lock();
8639         /* indicate whether we have probe response data or not */
8640         if (rcu_access_pointer(res->proberesp_ies) &&
8641             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8642                 goto fail_unlock_rcu;
8643
8644         /* this pointer prefers to be pointed to probe response data
8645          * but is always valid
8646          */
8647         ies = rcu_dereference(res->ies);
8648         if (ies) {
8649                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8650                                       NL80211_BSS_PAD))
8651                         goto fail_unlock_rcu;
8652                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8653                                         ies->len, ies->data))
8654                         goto fail_unlock_rcu;
8655         }
8656
8657         /* and this pointer is always (unless driver didn't know) beacon data */
8658         ies = rcu_dereference(res->beacon_ies);
8659         if (ies && ies->from_beacon) {
8660                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8661                                       NL80211_BSS_PAD))
8662                         goto fail_unlock_rcu;
8663                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8664                                         ies->len, ies->data))
8665                         goto fail_unlock_rcu;
8666         }
8667         rcu_read_unlock();
8668
8669         if (res->beacon_interval &&
8670             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8671                 goto nla_put_failure;
8672         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8673             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8674             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8675             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8676                         jiffies_to_msecs(jiffies - intbss->ts)))
8677                 goto nla_put_failure;
8678
8679         if (intbss->parent_tsf &&
8680             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8681                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8682              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8683                      intbss->parent_bssid)))
8684                 goto nla_put_failure;
8685
8686         if (intbss->ts_boottime &&
8687             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8688                               intbss->ts_boottime, NL80211_BSS_PAD))
8689                 goto nla_put_failure;
8690
8691         if (!nl80211_put_signal(msg, intbss->pub.chains,
8692                                 intbss->pub.chain_signal,
8693                                 NL80211_BSS_CHAIN_SIGNAL))
8694                 goto nla_put_failure;
8695
8696         switch (rdev->wiphy.signal_type) {
8697         case CFG80211_SIGNAL_TYPE_MBM:
8698                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8699                         goto nla_put_failure;
8700                 break;
8701         case CFG80211_SIGNAL_TYPE_UNSPEC:
8702                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8703                         goto nla_put_failure;
8704                 break;
8705         default:
8706                 break;
8707         }
8708
8709         switch (wdev->iftype) {
8710         case NL80211_IFTYPE_P2P_CLIENT:
8711         case NL80211_IFTYPE_STATION:
8712                 if (intbss == wdev->current_bss &&
8713                     nla_put_u32(msg, NL80211_BSS_STATUS,
8714                                 NL80211_BSS_STATUS_ASSOCIATED))
8715                         goto nla_put_failure;
8716                 break;
8717         case NL80211_IFTYPE_ADHOC:
8718                 if (intbss == wdev->current_bss &&
8719                     nla_put_u32(msg, NL80211_BSS_STATUS,
8720                                 NL80211_BSS_STATUS_IBSS_JOINED))
8721                         goto nla_put_failure;
8722                 break;
8723         default:
8724                 break;
8725         }
8726
8727         nla_nest_end(msg, bss);
8728
8729         genlmsg_end(msg, hdr);
8730         return 0;
8731
8732  fail_unlock_rcu:
8733         rcu_read_unlock();
8734  nla_put_failure:
8735         genlmsg_cancel(msg, hdr);
8736         return -EMSGSIZE;
8737 }
8738
8739 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8740 {
8741         struct cfg80211_registered_device *rdev;
8742         struct cfg80211_internal_bss *scan;
8743         struct wireless_dev *wdev;
8744         int start = cb->args[2], idx = 0;
8745         int err;
8746
8747         rtnl_lock();
8748         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8749         if (err) {
8750                 rtnl_unlock();
8751                 return err;
8752         }
8753
8754         wdev_lock(wdev);
8755         spin_lock_bh(&rdev->bss_lock);
8756
8757         /*
8758          * dump_scan will be called multiple times to break up the scan results
8759          * into multiple messages.  It is unlikely that any more bss-es will be
8760          * expired after the first call, so only call only call this on the
8761          * first dump_scan invocation.
8762          */
8763         if (start == 0)
8764                 cfg80211_bss_expire(rdev);
8765
8766         cb->seq = rdev->bss_generation;
8767
8768         list_for_each_entry(scan, &rdev->bss_list, list) {
8769                 if (++idx <= start)
8770                         continue;
8771                 if (nl80211_send_bss(skb, cb,
8772                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8773                                 rdev, wdev, scan) < 0) {
8774                         idx--;
8775                         break;
8776                 }
8777         }
8778
8779         spin_unlock_bh(&rdev->bss_lock);
8780         wdev_unlock(wdev);
8781
8782         cb->args[2] = idx;
8783         rtnl_unlock();
8784
8785         return skb->len;
8786 }
8787
8788 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8789                                int flags, struct net_device *dev,
8790                                bool allow_radio_stats,
8791                                struct survey_info *survey)
8792 {
8793         void *hdr;
8794         struct nlattr *infoattr;
8795
8796         /* skip radio stats if userspace didn't request them */
8797         if (!survey->channel && !allow_radio_stats)
8798                 return 0;
8799
8800         hdr = nl80211hdr_put(msg, portid, seq, flags,
8801                              NL80211_CMD_NEW_SURVEY_RESULTS);
8802         if (!hdr)
8803                 return -ENOMEM;
8804
8805         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8806                 goto nla_put_failure;
8807
8808         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8809         if (!infoattr)
8810                 goto nla_put_failure;
8811
8812         if (survey->channel &&
8813             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8814                         survey->channel->center_freq))
8815                 goto nla_put_failure;
8816
8817         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8818             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8819                 goto nla_put_failure;
8820         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8821             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8822                 goto nla_put_failure;
8823         if ((survey->filled & SURVEY_INFO_TIME) &&
8824             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8825                         survey->time, NL80211_SURVEY_INFO_PAD))
8826                 goto nla_put_failure;
8827         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8828             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8829                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8830                 goto nla_put_failure;
8831         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8832             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8833                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8834                 goto nla_put_failure;
8835         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8836             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8837                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8838                 goto nla_put_failure;
8839         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8840             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8841                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8842                 goto nla_put_failure;
8843         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8844             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8845                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8846                 goto nla_put_failure;
8847         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
8848             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
8849                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
8850                 goto nla_put_failure;
8851
8852         nla_nest_end(msg, infoattr);
8853
8854         genlmsg_end(msg, hdr);
8855         return 0;
8856
8857  nla_put_failure:
8858         genlmsg_cancel(msg, hdr);
8859         return -EMSGSIZE;
8860 }
8861
8862 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8863 {
8864         struct nlattr **attrbuf;
8865         struct survey_info survey;
8866         struct cfg80211_registered_device *rdev;
8867         struct wireless_dev *wdev;
8868         int survey_idx = cb->args[2];
8869         int res;
8870         bool radio_stats;
8871
8872         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8873         if (!attrbuf)
8874                 return -ENOMEM;
8875
8876         rtnl_lock();
8877         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8878         if (res)
8879                 goto out_err;
8880
8881         /* prepare_wdev_dump parsed the attributes */
8882         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8883
8884         if (!wdev->netdev) {
8885                 res = -EINVAL;
8886                 goto out_err;
8887         }
8888
8889         if (!rdev->ops->dump_survey) {
8890                 res = -EOPNOTSUPP;
8891                 goto out_err;
8892         }
8893
8894         while (1) {
8895                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8896                 if (res == -ENOENT)
8897                         break;
8898                 if (res)
8899                         goto out_err;
8900
8901                 /* don't send disabled channels, but do send non-channel data */
8902                 if (survey.channel &&
8903                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8904                         survey_idx++;
8905                         continue;
8906                 }
8907
8908                 if (nl80211_send_survey(skb,
8909                                 NETLINK_CB(cb->skb).portid,
8910                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8911                                 wdev->netdev, radio_stats, &survey) < 0)
8912                         goto out;
8913                 survey_idx++;
8914         }
8915
8916  out:
8917         cb->args[2] = survey_idx;
8918         res = skb->len;
8919  out_err:
8920         kfree(attrbuf);
8921         rtnl_unlock();
8922         return res;
8923 }
8924
8925 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8926 {
8927         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8928                                   NL80211_WPA_VERSION_2 |
8929                                   NL80211_WPA_VERSION_3));
8930 }
8931
8932 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8933 {
8934         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8935         struct net_device *dev = info->user_ptr[1];
8936         struct ieee80211_channel *chan;
8937         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8938         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8939         enum nl80211_auth_type auth_type;
8940         struct key_parse key;
8941         bool local_state_change;
8942
8943         if (!info->attrs[NL80211_ATTR_MAC])
8944                 return -EINVAL;
8945
8946         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8947                 return -EINVAL;
8948
8949         if (!info->attrs[NL80211_ATTR_SSID])
8950                 return -EINVAL;
8951
8952         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8953                 return -EINVAL;
8954
8955         err = nl80211_parse_key(info, &key);
8956         if (err)
8957                 return err;
8958
8959         if (key.idx >= 0) {
8960                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8961                         return -EINVAL;
8962                 if (!key.p.key || !key.p.key_len)
8963                         return -EINVAL;
8964                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8965                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8966                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8967                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8968                         return -EINVAL;
8969                 if (key.idx > 3)
8970                         return -EINVAL;
8971         } else {
8972                 key.p.key_len = 0;
8973                 key.p.key = NULL;
8974         }
8975
8976         if (key.idx >= 0) {
8977                 int i;
8978                 bool ok = false;
8979
8980                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8981                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8982                                 ok = true;
8983                                 break;
8984                         }
8985                 }
8986                 if (!ok)
8987                         return -EINVAL;
8988         }
8989
8990         if (!rdev->ops->auth)
8991                 return -EOPNOTSUPP;
8992
8993         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8994             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8995                 return -EOPNOTSUPP;
8996
8997         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8998         chan = nl80211_get_valid_chan(&rdev->wiphy,
8999                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9000         if (!chan)
9001                 return -EINVAL;
9002
9003         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9004         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9005
9006         if (info->attrs[NL80211_ATTR_IE]) {
9007                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9008                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9009         }
9010
9011         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9012         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9013                 return -EINVAL;
9014
9015         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9016              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9017              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9018              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9019             !info->attrs[NL80211_ATTR_AUTH_DATA])
9020                 return -EINVAL;
9021
9022         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9023                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9024                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9025                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9026                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9027                         return -EINVAL;
9028                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9029                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9030                 /* need to include at least Auth Transaction and Status Code */
9031                 if (auth_data_len < 4)
9032                         return -EINVAL;
9033         }
9034
9035         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9036
9037         /*
9038          * Since we no longer track auth state, ignore
9039          * requests to only change local state.
9040          */
9041         if (local_state_change)
9042                 return 0;
9043
9044         wdev_lock(dev->ieee80211_ptr);
9045         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9046                                  ssid, ssid_len, ie, ie_len,
9047                                  key.p.key, key.p.key_len, key.idx,
9048                                  auth_data, auth_data_len);
9049         wdev_unlock(dev->ieee80211_ptr);
9050         return err;
9051 }
9052
9053 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9054                                      struct genl_info *info)
9055 {
9056         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9057                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9058                 return -EINVAL;
9059         }
9060
9061         if (!rdev->ops->tx_control_port ||
9062             !wiphy_ext_feature_isset(&rdev->wiphy,
9063                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9064                 return -EOPNOTSUPP;
9065
9066         return 0;
9067 }
9068
9069 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9070                                    struct genl_info *info,
9071                                    struct cfg80211_crypto_settings *settings,
9072                                    int cipher_limit)
9073 {
9074         memset(settings, 0, sizeof(*settings));
9075
9076         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9077
9078         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9079                 u16 proto;
9080
9081                 proto = nla_get_u16(
9082                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9083                 settings->control_port_ethertype = cpu_to_be16(proto);
9084                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9085                     proto != ETH_P_PAE)
9086                         return -EINVAL;
9087                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9088                         settings->control_port_no_encrypt = true;
9089         } else
9090                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9091
9092         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9093                 int r = validate_pae_over_nl80211(rdev, info);
9094
9095                 if (r < 0)
9096                         return r;
9097
9098                 settings->control_port_over_nl80211 = true;
9099         }
9100
9101         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9102                 void *data;
9103                 int len, i;
9104
9105                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9106                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9107                 settings->n_ciphers_pairwise = len / sizeof(u32);
9108
9109                 if (len % sizeof(u32))
9110                         return -EINVAL;
9111
9112                 if (settings->n_ciphers_pairwise > cipher_limit)
9113                         return -EINVAL;
9114
9115                 memcpy(settings->ciphers_pairwise, data, len);
9116
9117                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9118                         if (!cfg80211_supported_cipher_suite(
9119                                         &rdev->wiphy,
9120                                         settings->ciphers_pairwise[i]))
9121                                 return -EINVAL;
9122         }
9123
9124         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9125                 settings->cipher_group =
9126                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9127                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9128                                                      settings->cipher_group))
9129                         return -EINVAL;
9130         }
9131
9132         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9133                 settings->wpa_versions =
9134                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9135                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9136                         return -EINVAL;
9137         }
9138
9139         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9140                 void *data;
9141                 int len;
9142
9143                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9144                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9145                 settings->n_akm_suites = len / sizeof(u32);
9146
9147                 if (len % sizeof(u32))
9148                         return -EINVAL;
9149
9150                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9151                         return -EINVAL;
9152
9153                 memcpy(settings->akm_suites, data, len);
9154         }
9155
9156         if (info->attrs[NL80211_ATTR_PMK]) {
9157                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9158                         return -EINVAL;
9159                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9160                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9161                         return -EINVAL;
9162                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9163         }
9164
9165         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9166                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9167                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9168                         return -EINVAL;
9169                 settings->sae_pwd =
9170                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9171                 settings->sae_pwd_len =
9172                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9173         }
9174
9175         return 0;
9176 }
9177
9178 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9179 {
9180         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9181         struct net_device *dev = info->user_ptr[1];
9182         struct ieee80211_channel *chan;
9183         struct cfg80211_assoc_request req = {};
9184         const u8 *bssid, *ssid;
9185         int err, ssid_len = 0;
9186
9187         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9188             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9189                 return -EPERM;
9190
9191         if (!info->attrs[NL80211_ATTR_MAC] ||
9192             !info->attrs[NL80211_ATTR_SSID] ||
9193             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9194                 return -EINVAL;
9195
9196         if (!rdev->ops->assoc)
9197                 return -EOPNOTSUPP;
9198
9199         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9200             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9201                 return -EOPNOTSUPP;
9202
9203         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9204
9205         chan = nl80211_get_valid_chan(&rdev->wiphy,
9206                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9207         if (!chan)
9208                 return -EINVAL;
9209
9210         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9211         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9212
9213         if (info->attrs[NL80211_ATTR_IE]) {
9214                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9215                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9216         }
9217
9218         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9219                 enum nl80211_mfp mfp =
9220                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9221                 if (mfp == NL80211_MFP_REQUIRED)
9222                         req.use_mfp = true;
9223                 else if (mfp != NL80211_MFP_NO)
9224                         return -EINVAL;
9225         }
9226
9227         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9228                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9229
9230         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9231                 req.flags |= ASSOC_REQ_DISABLE_HT;
9232
9233         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9234                 memcpy(&req.ht_capa_mask,
9235                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9236                        sizeof(req.ht_capa_mask));
9237
9238         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9239                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9240                         return -EINVAL;
9241                 memcpy(&req.ht_capa,
9242                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9243                        sizeof(req.ht_capa));
9244         }
9245
9246         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9247                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9248
9249         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9250                 memcpy(&req.vht_capa_mask,
9251                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9252                        sizeof(req.vht_capa_mask));
9253
9254         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9255                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9256                         return -EINVAL;
9257                 memcpy(&req.vht_capa,
9258                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9259                        sizeof(req.vht_capa));
9260         }
9261
9262         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9263                 if (!((rdev->wiphy.features &
9264                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9265                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9266                     !wiphy_ext_feature_isset(&rdev->wiphy,
9267                                              NL80211_EXT_FEATURE_RRM))
9268                         return -EINVAL;
9269                 req.flags |= ASSOC_REQ_USE_RRM;
9270         }
9271
9272         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9273                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9274                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9275                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9276                         return -EINVAL;
9277                 req.fils_nonces =
9278                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9279         }
9280
9281         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9282         if (!err) {
9283                 wdev_lock(dev->ieee80211_ptr);
9284
9285                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9286                                           ssid, ssid_len, &req);
9287
9288                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9289                         dev->ieee80211_ptr->conn_owner_nlportid =
9290                                 info->snd_portid;
9291                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9292                                bssid, ETH_ALEN);
9293                 }
9294
9295                 wdev_unlock(dev->ieee80211_ptr);
9296         }
9297
9298         return err;
9299 }
9300
9301 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9302 {
9303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9304         struct net_device *dev = info->user_ptr[1];
9305         const u8 *ie = NULL, *bssid;
9306         int ie_len = 0, err;
9307         u16 reason_code;
9308         bool local_state_change;
9309
9310         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9311             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9312                 return -EPERM;
9313
9314         if (!info->attrs[NL80211_ATTR_MAC])
9315                 return -EINVAL;
9316
9317         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9318                 return -EINVAL;
9319
9320         if (!rdev->ops->deauth)
9321                 return -EOPNOTSUPP;
9322
9323         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9324             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9325                 return -EOPNOTSUPP;
9326
9327         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9328
9329         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9330         if (reason_code == 0) {
9331                 /* Reason Code 0 is reserved */
9332                 return -EINVAL;
9333         }
9334
9335         if (info->attrs[NL80211_ATTR_IE]) {
9336                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9337                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9338         }
9339
9340         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9341
9342         wdev_lock(dev->ieee80211_ptr);
9343         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9344                                    local_state_change);
9345         wdev_unlock(dev->ieee80211_ptr);
9346         return err;
9347 }
9348
9349 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9350 {
9351         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9352         struct net_device *dev = info->user_ptr[1];
9353         const u8 *ie = NULL, *bssid;
9354         int ie_len = 0, err;
9355         u16 reason_code;
9356         bool local_state_change;
9357
9358         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9359             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9360                 return -EPERM;
9361
9362         if (!info->attrs[NL80211_ATTR_MAC])
9363                 return -EINVAL;
9364
9365         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9366                 return -EINVAL;
9367
9368         if (!rdev->ops->disassoc)
9369                 return -EOPNOTSUPP;
9370
9371         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9372             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9373                 return -EOPNOTSUPP;
9374
9375         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9376
9377         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9378         if (reason_code == 0) {
9379                 /* Reason Code 0 is reserved */
9380                 return -EINVAL;
9381         }
9382
9383         if (info->attrs[NL80211_ATTR_IE]) {
9384                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9385                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9386         }
9387
9388         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9389
9390         wdev_lock(dev->ieee80211_ptr);
9391         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9392                                      local_state_change);
9393         wdev_unlock(dev->ieee80211_ptr);
9394         return err;
9395 }
9396
9397 static bool
9398 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9399                          int mcast_rate[NUM_NL80211_BANDS],
9400                          int rateval)
9401 {
9402         struct wiphy *wiphy = &rdev->wiphy;
9403         bool found = false;
9404         int band, i;
9405
9406         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9407                 struct ieee80211_supported_band *sband;
9408
9409                 sband = wiphy->bands[band];
9410                 if (!sband)
9411                         continue;
9412
9413                 for (i = 0; i < sband->n_bitrates; i++) {
9414                         if (sband->bitrates[i].bitrate == rateval) {
9415                                 mcast_rate[band] = i + 1;
9416                                 found = true;
9417                                 break;
9418                         }
9419                 }
9420         }
9421
9422         return found;
9423 }
9424
9425 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9426 {
9427         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9428         struct net_device *dev = info->user_ptr[1];
9429         struct cfg80211_ibss_params ibss;
9430         struct wiphy *wiphy;
9431         struct cfg80211_cached_keys *connkeys = NULL;
9432         int err;
9433
9434         memset(&ibss, 0, sizeof(ibss));
9435
9436         if (!info->attrs[NL80211_ATTR_SSID] ||
9437             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9438                 return -EINVAL;
9439
9440         ibss.beacon_interval = 100;
9441
9442         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9443                 ibss.beacon_interval =
9444                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9445
9446         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9447                                            ibss.beacon_interval);
9448         if (err)
9449                 return err;
9450
9451         if (!rdev->ops->join_ibss)
9452                 return -EOPNOTSUPP;
9453
9454         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9455                 return -EOPNOTSUPP;
9456
9457         wiphy = &rdev->wiphy;
9458
9459         if (info->attrs[NL80211_ATTR_MAC]) {
9460                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9461
9462                 if (!is_valid_ether_addr(ibss.bssid))
9463                         return -EINVAL;
9464         }
9465         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9466         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9467
9468         if (info->attrs[NL80211_ATTR_IE]) {
9469                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9470                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9471         }
9472
9473         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9474         if (err)
9475                 return err;
9476
9477         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9478                                      NL80211_IFTYPE_ADHOC))
9479                 return -EINVAL;
9480
9481         switch (ibss.chandef.width) {
9482         case NL80211_CHAN_WIDTH_5:
9483         case NL80211_CHAN_WIDTH_10:
9484         case NL80211_CHAN_WIDTH_20_NOHT:
9485                 break;
9486         case NL80211_CHAN_WIDTH_20:
9487         case NL80211_CHAN_WIDTH_40:
9488                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9489                         return -EINVAL;
9490                 break;
9491         case NL80211_CHAN_WIDTH_80:
9492         case NL80211_CHAN_WIDTH_80P80:
9493         case NL80211_CHAN_WIDTH_160:
9494                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9495                         return -EINVAL;
9496                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9497                                              NL80211_EXT_FEATURE_VHT_IBSS))
9498                         return -EINVAL;
9499                 break;
9500         default:
9501                 return -EINVAL;
9502         }
9503
9504         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9505         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9506
9507         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9508                 u8 *rates =
9509                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9510                 int n_rates =
9511                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9512                 struct ieee80211_supported_band *sband =
9513                         wiphy->bands[ibss.chandef.chan->band];
9514
9515                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9516                                              &ibss.basic_rates);
9517                 if (err)
9518                         return err;
9519         }
9520
9521         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9522                 memcpy(&ibss.ht_capa_mask,
9523                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9524                        sizeof(ibss.ht_capa_mask));
9525
9526         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9527                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9528                         return -EINVAL;
9529                 memcpy(&ibss.ht_capa,
9530                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9531                        sizeof(ibss.ht_capa));
9532         }
9533
9534         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9535             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9536                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9537                 return -EINVAL;
9538
9539         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9540                 bool no_ht = false;
9541
9542                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9543                 if (IS_ERR(connkeys))
9544                         return PTR_ERR(connkeys);
9545
9546                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9547                     no_ht) {
9548                         kzfree(connkeys);
9549                         return -EINVAL;
9550                 }
9551         }
9552
9553         ibss.control_port =
9554                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9555
9556         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9557                 int r = validate_pae_over_nl80211(rdev, info);
9558
9559                 if (r < 0) {
9560                         kzfree(connkeys);
9561                         return r;
9562                 }
9563
9564                 ibss.control_port_over_nl80211 = true;
9565         }
9566
9567         ibss.userspace_handles_dfs =
9568                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9569
9570         wdev_lock(dev->ieee80211_ptr);
9571         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9572         if (err)
9573                 kzfree(connkeys);
9574         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9575                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9576         wdev_unlock(dev->ieee80211_ptr);
9577
9578         return err;
9579 }
9580
9581 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9582 {
9583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9584         struct net_device *dev = info->user_ptr[1];
9585
9586         if (!rdev->ops->leave_ibss)
9587                 return -EOPNOTSUPP;
9588
9589         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9590                 return -EOPNOTSUPP;
9591
9592         return cfg80211_leave_ibss(rdev, dev, false);
9593 }
9594
9595 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9596 {
9597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9598         struct net_device *dev = info->user_ptr[1];
9599         int mcast_rate[NUM_NL80211_BANDS];
9600         u32 nla_rate;
9601         int err;
9602
9603         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9604             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9605             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9606                 return -EOPNOTSUPP;
9607
9608         if (!rdev->ops->set_mcast_rate)
9609                 return -EOPNOTSUPP;
9610
9611         memset(mcast_rate, 0, sizeof(mcast_rate));
9612
9613         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9614                 return -EINVAL;
9615
9616         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9617         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9618                 return -EINVAL;
9619
9620         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9621
9622         return err;
9623 }
9624
9625 static struct sk_buff *
9626 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9627                             struct wireless_dev *wdev, int approxlen,
9628                             u32 portid, u32 seq, enum nl80211_commands cmd,
9629                             enum nl80211_attrs attr,
9630                             const struct nl80211_vendor_cmd_info *info,
9631                             gfp_t gfp)
9632 {
9633         struct sk_buff *skb;
9634         void *hdr;
9635         struct nlattr *data;
9636
9637         skb = nlmsg_new(approxlen + 100, gfp);
9638         if (!skb)
9639                 return NULL;
9640
9641         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9642         if (!hdr) {
9643                 kfree_skb(skb);
9644                 return NULL;
9645         }
9646
9647         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9648                 goto nla_put_failure;
9649
9650         if (info) {
9651                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9652                                 info->vendor_id))
9653                         goto nla_put_failure;
9654                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9655                                 info->subcmd))
9656                         goto nla_put_failure;
9657         }
9658
9659         if (wdev) {
9660                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9661                                       wdev_id(wdev), NL80211_ATTR_PAD))
9662                         goto nla_put_failure;
9663                 if (wdev->netdev &&
9664                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9665                                 wdev->netdev->ifindex))
9666                         goto nla_put_failure;
9667         }
9668
9669         data = nla_nest_start_noflag(skb, attr);
9670         if (!data)
9671                 goto nla_put_failure;
9672
9673         ((void **)skb->cb)[0] = rdev;
9674         ((void **)skb->cb)[1] = hdr;
9675         ((void **)skb->cb)[2] = data;
9676
9677         return skb;
9678
9679  nla_put_failure:
9680         kfree_skb(skb);
9681         return NULL;
9682 }
9683
9684 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9685                                            struct wireless_dev *wdev,
9686                                            enum nl80211_commands cmd,
9687                                            enum nl80211_attrs attr,
9688                                            unsigned int portid,
9689                                            int vendor_event_idx,
9690                                            int approxlen, gfp_t gfp)
9691 {
9692         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9693         const struct nl80211_vendor_cmd_info *info;
9694
9695         switch (cmd) {
9696         case NL80211_CMD_TESTMODE:
9697                 if (WARN_ON(vendor_event_idx != -1))
9698                         return NULL;
9699                 info = NULL;
9700                 break;
9701         case NL80211_CMD_VENDOR:
9702                 if (WARN_ON(vendor_event_idx < 0 ||
9703                             vendor_event_idx >= wiphy->n_vendor_events))
9704                         return NULL;
9705                 info = &wiphy->vendor_events[vendor_event_idx];
9706                 break;
9707         default:
9708                 WARN_ON(1);
9709                 return NULL;
9710         }
9711
9712         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9713                                            cmd, attr, info, gfp);
9714 }
9715 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9716
9717 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9718 {
9719         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9720         void *hdr = ((void **)skb->cb)[1];
9721         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9722         struct nlattr *data = ((void **)skb->cb)[2];
9723         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9724
9725         /* clear CB data for netlink core to own from now on */
9726         memset(skb->cb, 0, sizeof(skb->cb));
9727
9728         nla_nest_end(skb, data);
9729         genlmsg_end(skb, hdr);
9730
9731         if (nlhdr->nlmsg_pid) {
9732                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9733                                 nlhdr->nlmsg_pid);
9734         } else {
9735                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9736                         mcgrp = NL80211_MCGRP_VENDOR;
9737
9738                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9739                                         skb, 0, mcgrp, gfp);
9740         }
9741 }
9742 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9743
9744 #ifdef CONFIG_NL80211_TESTMODE
9745 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9746 {
9747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9748         struct wireless_dev *wdev =
9749                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9750         int err;
9751
9752         if (!rdev->ops->testmode_cmd)
9753                 return -EOPNOTSUPP;
9754
9755         if (IS_ERR(wdev)) {
9756                 err = PTR_ERR(wdev);
9757                 if (err != -EINVAL)
9758                         return err;
9759                 wdev = NULL;
9760         } else if (wdev->wiphy != &rdev->wiphy) {
9761                 return -EINVAL;
9762         }
9763
9764         if (!info->attrs[NL80211_ATTR_TESTDATA])
9765                 return -EINVAL;
9766
9767         rdev->cur_cmd_info = info;
9768         err = rdev_testmode_cmd(rdev, wdev,
9769                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9770                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9771         rdev->cur_cmd_info = NULL;
9772
9773         return err;
9774 }
9775
9776 static int nl80211_testmode_dump(struct sk_buff *skb,
9777                                  struct netlink_callback *cb)
9778 {
9779         struct cfg80211_registered_device *rdev;
9780         struct nlattr **attrbuf = NULL;
9781         int err;
9782         long phy_idx;
9783         void *data = NULL;
9784         int data_len = 0;
9785
9786         rtnl_lock();
9787
9788         if (cb->args[0]) {
9789                 /*
9790                  * 0 is a valid index, but not valid for args[0],
9791                  * so we need to offset by 1.
9792                  */
9793                 phy_idx = cb->args[0] - 1;
9794
9795                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9796                 if (!rdev) {
9797                         err = -ENOENT;
9798                         goto out_err;
9799                 }
9800         } else {
9801                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9802                                   GFP_KERNEL);
9803                 if (!attrbuf) {
9804                         err = -ENOMEM;
9805                         goto out_err;
9806                 }
9807
9808                 err = nlmsg_parse_deprecated(cb->nlh,
9809                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9810                                              attrbuf, nl80211_fam.maxattr,
9811                                              nl80211_policy, NULL);
9812                 if (err)
9813                         goto out_err;
9814
9815                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9816                 if (IS_ERR(rdev)) {
9817                         err = PTR_ERR(rdev);
9818                         goto out_err;
9819                 }
9820                 phy_idx = rdev->wiphy_idx;
9821
9822                 if (attrbuf[NL80211_ATTR_TESTDATA])
9823                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9824         }
9825
9826         if (cb->args[1]) {
9827                 data = nla_data((void *)cb->args[1]);
9828                 data_len = nla_len((void *)cb->args[1]);
9829         }
9830
9831         if (!rdev->ops->testmode_dump) {
9832                 err = -EOPNOTSUPP;
9833                 goto out_err;
9834         }
9835
9836         while (1) {
9837                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9838                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9839                                            NL80211_CMD_TESTMODE);
9840                 struct nlattr *tmdata;
9841
9842                 if (!hdr)
9843                         break;
9844
9845                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9846                         genlmsg_cancel(skb, hdr);
9847                         break;
9848                 }
9849
9850                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9851                 if (!tmdata) {
9852                         genlmsg_cancel(skb, hdr);
9853                         break;
9854                 }
9855                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9856                 nla_nest_end(skb, tmdata);
9857
9858                 if (err == -ENOBUFS || err == -ENOENT) {
9859                         genlmsg_cancel(skb, hdr);
9860                         break;
9861                 } else if (err) {
9862                         genlmsg_cancel(skb, hdr);
9863                         goto out_err;
9864                 }
9865
9866                 genlmsg_end(skb, hdr);
9867         }
9868
9869         err = skb->len;
9870         /* see above */
9871         cb->args[0] = phy_idx + 1;
9872  out_err:
9873         kfree(attrbuf);
9874         rtnl_unlock();
9875         return err;
9876 }
9877 #endif
9878
9879 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9880 {
9881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9882         struct net_device *dev = info->user_ptr[1];
9883         struct cfg80211_connect_params connect;
9884         struct wiphy *wiphy;
9885         struct cfg80211_cached_keys *connkeys = NULL;
9886         int err;
9887
9888         memset(&connect, 0, sizeof(connect));
9889
9890         if (!info->attrs[NL80211_ATTR_SSID] ||
9891             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9892                 return -EINVAL;
9893
9894         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9895                 connect.auth_type =
9896                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9897                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9898                                              NL80211_CMD_CONNECT))
9899                         return -EINVAL;
9900         } else
9901                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9902
9903         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9904
9905         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9906             !wiphy_ext_feature_isset(&rdev->wiphy,
9907                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9908                 return -EINVAL;
9909         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9910
9911         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9912                                       NL80211_MAX_NR_CIPHER_SUITES);
9913         if (err)
9914                 return err;
9915
9916         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9917             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9918                 return -EOPNOTSUPP;
9919
9920         wiphy = &rdev->wiphy;
9921
9922         connect.bg_scan_period = -1;
9923         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9924                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9925                 connect.bg_scan_period =
9926                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9927         }
9928
9929         if (info->attrs[NL80211_ATTR_MAC])
9930                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9931         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9932                 connect.bssid_hint =
9933                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9934         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9935         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9936
9937         if (info->attrs[NL80211_ATTR_IE]) {
9938                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9939                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9940         }
9941
9942         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9943                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9944                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9945                     !wiphy_ext_feature_isset(&rdev->wiphy,
9946                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9947                         return -EOPNOTSUPP;
9948         } else {
9949                 connect.mfp = NL80211_MFP_NO;
9950         }
9951
9952         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9953                 connect.prev_bssid =
9954                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9955
9956         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9957                 connect.channel = nl80211_get_valid_chan(
9958                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9959                 if (!connect.channel)
9960                         return -EINVAL;
9961         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9962                 connect.channel_hint = nl80211_get_valid_chan(
9963                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9964                 if (!connect.channel_hint)
9965                         return -EINVAL;
9966         }
9967
9968         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
9969                 connect.edmg.channels =
9970                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
9971
9972                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
9973                         connect.edmg.bw_config =
9974                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
9975         }
9976
9977         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9978                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9979                 if (IS_ERR(connkeys))
9980                         return PTR_ERR(connkeys);
9981         }
9982
9983         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9984                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9985
9986         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9987                 memcpy(&connect.ht_capa_mask,
9988                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9989                        sizeof(connect.ht_capa_mask));
9990
9991         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9992                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9993                         kzfree(connkeys);
9994                         return -EINVAL;
9995                 }
9996                 memcpy(&connect.ht_capa,
9997                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9998                        sizeof(connect.ht_capa));
9999         }
10000
10001         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10002                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10003
10004         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10005                 memcpy(&connect.vht_capa_mask,
10006                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10007                        sizeof(connect.vht_capa_mask));
10008
10009         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10010                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10011                         kzfree(connkeys);
10012                         return -EINVAL;
10013                 }
10014                 memcpy(&connect.vht_capa,
10015                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10016                        sizeof(connect.vht_capa));
10017         }
10018
10019         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10020                 if (!((rdev->wiphy.features &
10021                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10022                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10023                     !wiphy_ext_feature_isset(&rdev->wiphy,
10024                                              NL80211_EXT_FEATURE_RRM)) {
10025                         kzfree(connkeys);
10026                         return -EINVAL;
10027                 }
10028                 connect.flags |= ASSOC_REQ_USE_RRM;
10029         }
10030
10031         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10032         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10033                 kzfree(connkeys);
10034                 return -EOPNOTSUPP;
10035         }
10036
10037         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10038                 /* bss selection makes no sense if bssid is set */
10039                 if (connect.bssid) {
10040                         kzfree(connkeys);
10041                         return -EINVAL;
10042                 }
10043
10044                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10045                                        wiphy, &connect.bss_select);
10046                 if (err) {
10047                         kzfree(connkeys);
10048                         return err;
10049                 }
10050         }
10051
10052         if (wiphy_ext_feature_isset(&rdev->wiphy,
10053                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10054             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10055             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10056             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10057             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10058                 connect.fils_erp_username =
10059                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10060                 connect.fils_erp_username_len =
10061                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10062                 connect.fils_erp_realm =
10063                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10064                 connect.fils_erp_realm_len =
10065                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10066                 connect.fils_erp_next_seq_num =
10067                         nla_get_u16(
10068                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10069                 connect.fils_erp_rrk =
10070                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10071                 connect.fils_erp_rrk_len =
10072                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10073         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10074                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10075                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10076                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10077                 kzfree(connkeys);
10078                 return -EINVAL;
10079         }
10080
10081         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10082                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10083                         kzfree(connkeys);
10084                         GENL_SET_ERR_MSG(info,
10085                                          "external auth requires connection ownership");
10086                         return -EINVAL;
10087                 }
10088                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10089         }
10090
10091         wdev_lock(dev->ieee80211_ptr);
10092
10093         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10094                                connect.prev_bssid);
10095         if (err)
10096                 kzfree(connkeys);
10097
10098         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10099                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10100                 if (connect.bssid)
10101                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10102                                connect.bssid, ETH_ALEN);
10103                 else
10104                         memset(dev->ieee80211_ptr->disconnect_bssid,
10105                                0, ETH_ALEN);
10106         }
10107
10108         wdev_unlock(dev->ieee80211_ptr);
10109
10110         return err;
10111 }
10112
10113 static int nl80211_update_connect_params(struct sk_buff *skb,
10114                                          struct genl_info *info)
10115 {
10116         struct cfg80211_connect_params connect = {};
10117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10118         struct net_device *dev = info->user_ptr[1];
10119         struct wireless_dev *wdev = dev->ieee80211_ptr;
10120         bool fils_sk_offload;
10121         u32 auth_type;
10122         u32 changed = 0;
10123         int ret;
10124
10125         if (!rdev->ops->update_connect_params)
10126                 return -EOPNOTSUPP;
10127
10128         if (info->attrs[NL80211_ATTR_IE]) {
10129                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10130                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10131                 changed |= UPDATE_ASSOC_IES;
10132         }
10133
10134         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10135                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10136
10137         /*
10138          * when driver supports fils-sk offload all attributes must be
10139          * provided. So the else covers "fils-sk-not-all" and
10140          * "no-fils-sk-any".
10141          */
10142         if (fils_sk_offload &&
10143             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10144             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10145             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10146             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10147                 connect.fils_erp_username =
10148                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10149                 connect.fils_erp_username_len =
10150                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10151                 connect.fils_erp_realm =
10152                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10153                 connect.fils_erp_realm_len =
10154                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10155                 connect.fils_erp_next_seq_num =
10156                         nla_get_u16(
10157                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10158                 connect.fils_erp_rrk =
10159                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10160                 connect.fils_erp_rrk_len =
10161                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10162                 changed |= UPDATE_FILS_ERP_INFO;
10163         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10164                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10165                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10166                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10167                 return -EINVAL;
10168         }
10169
10170         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10171                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10172                 if (!nl80211_valid_auth_type(rdev, auth_type,
10173                                              NL80211_CMD_CONNECT))
10174                         return -EINVAL;
10175
10176                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10177                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10178                         return -EINVAL;
10179
10180                 connect.auth_type = auth_type;
10181                 changed |= UPDATE_AUTH_TYPE;
10182         }
10183
10184         wdev_lock(dev->ieee80211_ptr);
10185         if (!wdev->current_bss)
10186                 ret = -ENOLINK;
10187         else
10188                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10189         wdev_unlock(dev->ieee80211_ptr);
10190
10191         return ret;
10192 }
10193
10194 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10195 {
10196         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10197         struct net_device *dev = info->user_ptr[1];
10198         u16 reason;
10199         int ret;
10200
10201         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10202             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10203                 return -EPERM;
10204
10205         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10206                 reason = WLAN_REASON_DEAUTH_LEAVING;
10207         else
10208                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10209
10210         if (reason == 0)
10211                 return -EINVAL;
10212
10213         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10214             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10215                 return -EOPNOTSUPP;
10216
10217         wdev_lock(dev->ieee80211_ptr);
10218         ret = cfg80211_disconnect(rdev, dev, reason, true);
10219         wdev_unlock(dev->ieee80211_ptr);
10220         return ret;
10221 }
10222
10223 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10224 {
10225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10226         struct net *net;
10227         int err;
10228
10229         if (info->attrs[NL80211_ATTR_PID]) {
10230                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10231
10232                 net = get_net_ns_by_pid(pid);
10233         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10234                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10235
10236                 net = get_net_ns_by_fd(fd);
10237         } else {
10238                 return -EINVAL;
10239         }
10240
10241         if (IS_ERR(net))
10242                 return PTR_ERR(net);
10243
10244         err = 0;
10245
10246         /* check if anything to do */
10247         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10248                 err = cfg80211_switch_netns(rdev, net);
10249
10250         put_net(net);
10251         return err;
10252 }
10253
10254 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10255 {
10256         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10257         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10258                         struct cfg80211_pmksa *pmksa) = NULL;
10259         struct net_device *dev = info->user_ptr[1];
10260         struct cfg80211_pmksa pmksa;
10261
10262         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10263
10264         if (!info->attrs[NL80211_ATTR_PMKID])
10265                 return -EINVAL;
10266
10267         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10268
10269         if (info->attrs[NL80211_ATTR_MAC]) {
10270                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10271         } else if (info->attrs[NL80211_ATTR_SSID] &&
10272                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10273                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10274                     info->attrs[NL80211_ATTR_PMK])) {
10275                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10276                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10277                 pmksa.cache_id =
10278                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10279         } else {
10280                 return -EINVAL;
10281         }
10282         if (info->attrs[NL80211_ATTR_PMK]) {
10283                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10284                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10285         }
10286
10287         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10288             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10289             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10290               wiphy_ext_feature_isset(&rdev->wiphy,
10291                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10292                 return -EOPNOTSUPP;
10293
10294         switch (info->genlhdr->cmd) {
10295         case NL80211_CMD_SET_PMKSA:
10296                 rdev_ops = rdev->ops->set_pmksa;
10297                 break;
10298         case NL80211_CMD_DEL_PMKSA:
10299                 rdev_ops = rdev->ops->del_pmksa;
10300                 break;
10301         default:
10302                 WARN_ON(1);
10303                 break;
10304         }
10305
10306         if (!rdev_ops)
10307                 return -EOPNOTSUPP;
10308
10309         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10310 }
10311
10312 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10313 {
10314         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10315         struct net_device *dev = info->user_ptr[1];
10316
10317         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10318             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10319                 return -EOPNOTSUPP;
10320
10321         if (!rdev->ops->flush_pmksa)
10322                 return -EOPNOTSUPP;
10323
10324         return rdev_flush_pmksa(rdev, dev);
10325 }
10326
10327 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10328 {
10329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10330         struct net_device *dev = info->user_ptr[1];
10331         u8 action_code, dialog_token;
10332         u32 peer_capability = 0;
10333         u16 status_code;
10334         u8 *peer;
10335         bool initiator;
10336
10337         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10338             !rdev->ops->tdls_mgmt)
10339                 return -EOPNOTSUPP;
10340
10341         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10342             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10343             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10344             !info->attrs[NL80211_ATTR_IE] ||
10345             !info->attrs[NL80211_ATTR_MAC])
10346                 return -EINVAL;
10347
10348         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10349         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10350         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10351         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10352         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10353         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10354                 peer_capability =
10355                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10356
10357         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10358                               dialog_token, status_code, peer_capability,
10359                               initiator,
10360                               nla_data(info->attrs[NL80211_ATTR_IE]),
10361                               nla_len(info->attrs[NL80211_ATTR_IE]));
10362 }
10363
10364 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10365 {
10366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10367         struct net_device *dev = info->user_ptr[1];
10368         enum nl80211_tdls_operation operation;
10369         u8 *peer;
10370
10371         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10372             !rdev->ops->tdls_oper)
10373                 return -EOPNOTSUPP;
10374
10375         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10376             !info->attrs[NL80211_ATTR_MAC])
10377                 return -EINVAL;
10378
10379         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10380         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10381
10382         return rdev_tdls_oper(rdev, dev, peer, operation);
10383 }
10384
10385 static int nl80211_remain_on_channel(struct sk_buff *skb,
10386                                      struct genl_info *info)
10387 {
10388         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10389         struct wireless_dev *wdev = info->user_ptr[1];
10390         struct cfg80211_chan_def chandef;
10391         const struct cfg80211_chan_def *compat_chandef;
10392         struct sk_buff *msg;
10393         void *hdr;
10394         u64 cookie;
10395         u32 duration;
10396         int err;
10397
10398         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10399             !info->attrs[NL80211_ATTR_DURATION])
10400                 return -EINVAL;
10401
10402         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10403
10404         if (!rdev->ops->remain_on_channel ||
10405             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10406                 return -EOPNOTSUPP;
10407
10408         /*
10409          * We should be on that channel for at least a minimum amount of
10410          * time (10ms) but no longer than the driver supports.
10411          */
10412         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10413             duration > rdev->wiphy.max_remain_on_channel_duration)
10414                 return -EINVAL;
10415
10416         err = nl80211_parse_chandef(rdev, info, &chandef);
10417         if (err)
10418                 return err;
10419
10420         wdev_lock(wdev);
10421         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10422             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10423                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10424                                                              &chandef);
10425                 if (compat_chandef != &chandef) {
10426                         wdev_unlock(wdev);
10427                         return -EBUSY;
10428                 }
10429         }
10430         wdev_unlock(wdev);
10431
10432         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10433         if (!msg)
10434                 return -ENOMEM;
10435
10436         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10437                              NL80211_CMD_REMAIN_ON_CHANNEL);
10438         if (!hdr) {
10439                 err = -ENOBUFS;
10440                 goto free_msg;
10441         }
10442
10443         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10444                                      duration, &cookie);
10445
10446         if (err)
10447                 goto free_msg;
10448
10449         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10450                               NL80211_ATTR_PAD))
10451                 goto nla_put_failure;
10452
10453         genlmsg_end(msg, hdr);
10454
10455         return genlmsg_reply(msg, info);
10456
10457  nla_put_failure:
10458         err = -ENOBUFS;
10459  free_msg:
10460         nlmsg_free(msg);
10461         return err;
10462 }
10463
10464 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10465                                             struct genl_info *info)
10466 {
10467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10468         struct wireless_dev *wdev = info->user_ptr[1];
10469         u64 cookie;
10470
10471         if (!info->attrs[NL80211_ATTR_COOKIE])
10472                 return -EINVAL;
10473
10474         if (!rdev->ops->cancel_remain_on_channel)
10475                 return -EOPNOTSUPP;
10476
10477         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10478
10479         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10480 }
10481
10482 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10483                                        struct genl_info *info)
10484 {
10485         struct cfg80211_bitrate_mask mask;
10486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10487         struct net_device *dev = info->user_ptr[1];
10488         int err;
10489
10490         if (!rdev->ops->set_bitrate_mask)
10491                 return -EOPNOTSUPP;
10492
10493         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10494         if (err)
10495                 return err;
10496
10497         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10498 }
10499
10500 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10501 {
10502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10503         struct wireless_dev *wdev = info->user_ptr[1];
10504         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10505
10506         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10507                 return -EINVAL;
10508
10509         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10510                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10511
10512         switch (wdev->iftype) {
10513         case NL80211_IFTYPE_STATION:
10514         case NL80211_IFTYPE_ADHOC:
10515         case NL80211_IFTYPE_P2P_CLIENT:
10516         case NL80211_IFTYPE_AP:
10517         case NL80211_IFTYPE_AP_VLAN:
10518         case NL80211_IFTYPE_MESH_POINT:
10519         case NL80211_IFTYPE_P2P_GO:
10520         case NL80211_IFTYPE_P2P_DEVICE:
10521                 break;
10522         case NL80211_IFTYPE_NAN:
10523         default:
10524                 return -EOPNOTSUPP;
10525         }
10526
10527         /* not much point in registering if we can't reply */
10528         if (!rdev->ops->mgmt_tx)
10529                 return -EOPNOTSUPP;
10530
10531         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10532                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10533                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10534 }
10535
10536 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10537 {
10538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10539         struct wireless_dev *wdev = info->user_ptr[1];
10540         struct cfg80211_chan_def chandef;
10541         int err;
10542         void *hdr = NULL;
10543         u64 cookie;
10544         struct sk_buff *msg = NULL;
10545         struct cfg80211_mgmt_tx_params params = {
10546                 .dont_wait_for_ack =
10547                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10548         };
10549
10550         if (!info->attrs[NL80211_ATTR_FRAME])
10551                 return -EINVAL;
10552
10553         if (!rdev->ops->mgmt_tx)
10554                 return -EOPNOTSUPP;
10555
10556         switch (wdev->iftype) {
10557         case NL80211_IFTYPE_P2P_DEVICE:
10558                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10559                         return -EINVAL;
10560         case NL80211_IFTYPE_STATION:
10561         case NL80211_IFTYPE_ADHOC:
10562         case NL80211_IFTYPE_P2P_CLIENT:
10563         case NL80211_IFTYPE_AP:
10564         case NL80211_IFTYPE_AP_VLAN:
10565         case NL80211_IFTYPE_MESH_POINT:
10566         case NL80211_IFTYPE_P2P_GO:
10567                 break;
10568         case NL80211_IFTYPE_NAN:
10569         default:
10570                 return -EOPNOTSUPP;
10571         }
10572
10573         if (info->attrs[NL80211_ATTR_DURATION]) {
10574                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10575                         return -EINVAL;
10576                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10577
10578                 /*
10579                  * We should wait on the channel for at least a minimum amount
10580                  * of time (10ms) but no longer than the driver supports.
10581                  */
10582                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10583                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10584                         return -EINVAL;
10585         }
10586
10587         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10588
10589         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10590                 return -EINVAL;
10591
10592         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10593
10594         /* get the channel if any has been specified, otherwise pass NULL to
10595          * the driver. The latter will use the current one
10596          */
10597         chandef.chan = NULL;
10598         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10599                 err = nl80211_parse_chandef(rdev, info, &chandef);
10600                 if (err)
10601                         return err;
10602         }
10603
10604         if (!chandef.chan && params.offchan)
10605                 return -EINVAL;
10606
10607         wdev_lock(wdev);
10608         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10609                 wdev_unlock(wdev);
10610                 return -EBUSY;
10611         }
10612         wdev_unlock(wdev);
10613
10614         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10615         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10616
10617         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10618                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10619                 int i;
10620
10621                 if (len % sizeof(u16))
10622                         return -EINVAL;
10623
10624                 params.n_csa_offsets = len / sizeof(u16);
10625                 params.csa_offsets =
10626                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10627
10628                 /* check that all the offsets fit the frame */
10629                 for (i = 0; i < params.n_csa_offsets; i++) {
10630                         if (params.csa_offsets[i] >= params.len)
10631                                 return -EINVAL;
10632                 }
10633         }
10634
10635         if (!params.dont_wait_for_ack) {
10636                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10637                 if (!msg)
10638                         return -ENOMEM;
10639
10640                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10641                                      NL80211_CMD_FRAME);
10642                 if (!hdr) {
10643                         err = -ENOBUFS;
10644                         goto free_msg;
10645                 }
10646         }
10647
10648         params.chan = chandef.chan;
10649         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10650         if (err)
10651                 goto free_msg;
10652
10653         if (msg) {
10654                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10655                                       NL80211_ATTR_PAD))
10656                         goto nla_put_failure;
10657
10658                 genlmsg_end(msg, hdr);
10659                 return genlmsg_reply(msg, info);
10660         }
10661
10662         return 0;
10663
10664  nla_put_failure:
10665         err = -ENOBUFS;
10666  free_msg:
10667         nlmsg_free(msg);
10668         return err;
10669 }
10670
10671 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10672 {
10673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10674         struct wireless_dev *wdev = info->user_ptr[1];
10675         u64 cookie;
10676
10677         if (!info->attrs[NL80211_ATTR_COOKIE])
10678                 return -EINVAL;
10679
10680         if (!rdev->ops->mgmt_tx_cancel_wait)
10681                 return -EOPNOTSUPP;
10682
10683         switch (wdev->iftype) {
10684         case NL80211_IFTYPE_STATION:
10685         case NL80211_IFTYPE_ADHOC:
10686         case NL80211_IFTYPE_P2P_CLIENT:
10687         case NL80211_IFTYPE_AP:
10688         case NL80211_IFTYPE_AP_VLAN:
10689         case NL80211_IFTYPE_P2P_GO:
10690         case NL80211_IFTYPE_P2P_DEVICE:
10691                 break;
10692         case NL80211_IFTYPE_NAN:
10693         default:
10694                 return -EOPNOTSUPP;
10695         }
10696
10697         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10698
10699         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10700 }
10701
10702 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10703 {
10704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10705         struct wireless_dev *wdev;
10706         struct net_device *dev = info->user_ptr[1];
10707         u8 ps_state;
10708         bool state;
10709         int err;
10710
10711         if (!info->attrs[NL80211_ATTR_PS_STATE])
10712                 return -EINVAL;
10713
10714         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10715
10716         wdev = dev->ieee80211_ptr;
10717
10718         if (!rdev->ops->set_power_mgmt)
10719                 return -EOPNOTSUPP;
10720
10721         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10722
10723         if (state == wdev->ps)
10724                 return 0;
10725
10726         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10727         if (!err)
10728                 wdev->ps = state;
10729         return err;
10730 }
10731
10732 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10733 {
10734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10735         enum nl80211_ps_state ps_state;
10736         struct wireless_dev *wdev;
10737         struct net_device *dev = info->user_ptr[1];
10738         struct sk_buff *msg;
10739         void *hdr;
10740         int err;
10741
10742         wdev = dev->ieee80211_ptr;
10743
10744         if (!rdev->ops->set_power_mgmt)
10745                 return -EOPNOTSUPP;
10746
10747         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10748         if (!msg)
10749                 return -ENOMEM;
10750
10751         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10752                              NL80211_CMD_GET_POWER_SAVE);
10753         if (!hdr) {
10754                 err = -ENOBUFS;
10755                 goto free_msg;
10756         }
10757
10758         if (wdev->ps)
10759                 ps_state = NL80211_PS_ENABLED;
10760         else
10761                 ps_state = NL80211_PS_DISABLED;
10762
10763         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10764                 goto nla_put_failure;
10765
10766         genlmsg_end(msg, hdr);
10767         return genlmsg_reply(msg, info);
10768
10769  nla_put_failure:
10770         err = -ENOBUFS;
10771  free_msg:
10772         nlmsg_free(msg);
10773         return err;
10774 }
10775
10776 static const struct nla_policy
10777 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10778         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10779         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10780         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10781         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10782         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10783         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10784         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10785 };
10786
10787 static int nl80211_set_cqm_txe(struct genl_info *info,
10788                                u32 rate, u32 pkts, u32 intvl)
10789 {
10790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10791         struct net_device *dev = info->user_ptr[1];
10792         struct wireless_dev *wdev = dev->ieee80211_ptr;
10793
10794         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10795                 return -EINVAL;
10796
10797         if (!rdev->ops->set_cqm_txe_config)
10798                 return -EOPNOTSUPP;
10799
10800         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10801             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10802                 return -EOPNOTSUPP;
10803
10804         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10805 }
10806
10807 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10808                                     struct net_device *dev)
10809 {
10810         struct wireless_dev *wdev = dev->ieee80211_ptr;
10811         s32 last, low, high;
10812         u32 hyst;
10813         int i, n, low_index;
10814         int err;
10815
10816         /* RSSI reporting disabled? */
10817         if (!wdev->cqm_config)
10818                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10819
10820         /*
10821          * Obtain current RSSI value if possible, if not and no RSSI threshold
10822          * event has been received yet, we should receive an event after a
10823          * connection is established and enough beacons received to calculate
10824          * the average.
10825          */
10826         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10827             rdev->ops->get_station) {
10828                 struct station_info sinfo = {};
10829                 u8 *mac_addr;
10830
10831                 mac_addr = wdev->current_bss->pub.bssid;
10832
10833                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10834                 if (err)
10835                         return err;
10836
10837                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10838                         wdev->cqm_config->last_rssi_event_value =
10839                                 (s8) sinfo.rx_beacon_signal_avg;
10840         }
10841
10842         last = wdev->cqm_config->last_rssi_event_value;
10843         hyst = wdev->cqm_config->rssi_hyst;
10844         n = wdev->cqm_config->n_rssi_thresholds;
10845
10846         for (i = 0; i < n; i++) {
10847                 i = array_index_nospec(i, n);
10848                 if (last < wdev->cqm_config->rssi_thresholds[i])
10849                         break;
10850         }
10851
10852         low_index = i - 1;
10853         if (low_index >= 0) {
10854                 low_index = array_index_nospec(low_index, n);
10855                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10856         } else {
10857                 low = S32_MIN;
10858         }
10859         if (i < n) {
10860                 i = array_index_nospec(i, n);
10861                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10862         } else {
10863                 high = S32_MAX;
10864         }
10865
10866         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10867 }
10868
10869 static int nl80211_set_cqm_rssi(struct genl_info *info,
10870                                 const s32 *thresholds, int n_thresholds,
10871                                 u32 hysteresis)
10872 {
10873         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10874         struct net_device *dev = info->user_ptr[1];
10875         struct wireless_dev *wdev = dev->ieee80211_ptr;
10876         int i, err;
10877         s32 prev = S32_MIN;
10878
10879         /* Check all values negative and sorted */
10880         for (i = 0; i < n_thresholds; i++) {
10881                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10882                         return -EINVAL;
10883
10884                 prev = thresholds[i];
10885         }
10886
10887         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10888             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10889                 return -EOPNOTSUPP;
10890
10891         wdev_lock(wdev);
10892         cfg80211_cqm_config_free(wdev);
10893         wdev_unlock(wdev);
10894
10895         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10896                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10897                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10898
10899                 return rdev_set_cqm_rssi_config(rdev, dev,
10900                                                 thresholds[0], hysteresis);
10901         }
10902
10903         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10904                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10905                 return -EOPNOTSUPP;
10906
10907         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10908                 n_thresholds = 0;
10909
10910         wdev_lock(wdev);
10911         if (n_thresholds) {
10912                 struct cfg80211_cqm_config *cqm_config;
10913
10914                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10915                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10916                 if (!cqm_config) {
10917                         err = -ENOMEM;
10918                         goto unlock;
10919                 }
10920
10921                 cqm_config->rssi_hyst = hysteresis;
10922                 cqm_config->n_rssi_thresholds = n_thresholds;
10923                 memcpy(cqm_config->rssi_thresholds, thresholds,
10924                        n_thresholds * sizeof(s32));
10925
10926                 wdev->cqm_config = cqm_config;
10927         }
10928
10929         err = cfg80211_cqm_rssi_update(rdev, dev);
10930
10931 unlock:
10932         wdev_unlock(wdev);
10933
10934         return err;
10935 }
10936
10937 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10938 {
10939         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10940         struct nlattr *cqm;
10941         int err;
10942
10943         cqm = info->attrs[NL80211_ATTR_CQM];
10944         if (!cqm)
10945                 return -EINVAL;
10946
10947         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10948                                           nl80211_attr_cqm_policy,
10949                                           info->extack);
10950         if (err)
10951                 return err;
10952
10953         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10954             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10955                 const s32 *thresholds =
10956                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10957                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10958                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10959
10960                 if (len % 4)
10961                         return -EINVAL;
10962
10963                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10964                                             hysteresis);
10965         }
10966
10967         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10968             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10969             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10970                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10971                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10972                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10973
10974                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10975         }
10976
10977         return -EINVAL;
10978 }
10979
10980 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10981 {
10982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10983         struct net_device *dev = info->user_ptr[1];
10984         struct ocb_setup setup = {};
10985         int err;
10986
10987         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10988         if (err)
10989                 return err;
10990
10991         return cfg80211_join_ocb(rdev, dev, &setup);
10992 }
10993
10994 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10995 {
10996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10997         struct net_device *dev = info->user_ptr[1];
10998
10999         return cfg80211_leave_ocb(rdev, dev);
11000 }
11001
11002 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11003 {
11004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11005         struct net_device *dev = info->user_ptr[1];
11006         struct mesh_config cfg;
11007         struct mesh_setup setup;
11008         int err;
11009
11010         /* start with default */
11011         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11012         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11013
11014         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11015                 /* and parse parameters if given */
11016                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11017                 if (err)
11018                         return err;
11019         }
11020
11021         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11022             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11023                 return -EINVAL;
11024
11025         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11026         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11027
11028         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11029             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11030                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11031                         return -EINVAL;
11032
11033         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11034                 setup.beacon_interval =
11035                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11036
11037                 err = cfg80211_validate_beacon_int(rdev,
11038                                                    NL80211_IFTYPE_MESH_POINT,
11039                                                    setup.beacon_interval);
11040                 if (err)
11041                         return err;
11042         }
11043
11044         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11045                 setup.dtim_period =
11046                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11047                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11048                         return -EINVAL;
11049         }
11050
11051         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11052                 /* parse additional setup parameters if given */
11053                 err = nl80211_parse_mesh_setup(info, &setup);
11054                 if (err)
11055                         return err;
11056         }
11057
11058         if (setup.user_mpm)
11059                 cfg.auto_open_plinks = false;
11060
11061         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11062                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11063                 if (err)
11064                         return err;
11065         } else {
11066                 /* __cfg80211_join_mesh() will sort it out */
11067                 setup.chandef.chan = NULL;
11068         }
11069
11070         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11071                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11072                 int n_rates =
11073                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11074                 struct ieee80211_supported_band *sband;
11075
11076                 if (!setup.chandef.chan)
11077                         return -EINVAL;
11078
11079                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11080
11081                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11082                                              &setup.basic_rates);
11083                 if (err)
11084                         return err;
11085         }
11086
11087         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11088                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11089                 if (err)
11090                         return err;
11091
11092                 if (!setup.chandef.chan)
11093                         return -EINVAL;
11094
11095                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11096                                               &setup.beacon_rate);
11097                 if (err)
11098                         return err;
11099         }
11100
11101         setup.userspace_handles_dfs =
11102                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11103
11104         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11105                 int r = validate_pae_over_nl80211(rdev, info);
11106
11107                 if (r < 0)
11108                         return r;
11109
11110                 setup.control_port_over_nl80211 = true;
11111         }
11112
11113         wdev_lock(dev->ieee80211_ptr);
11114         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11115         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11116                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11117         wdev_unlock(dev->ieee80211_ptr);
11118
11119         return err;
11120 }
11121
11122 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11123 {
11124         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11125         struct net_device *dev = info->user_ptr[1];
11126
11127         return cfg80211_leave_mesh(rdev, dev);
11128 }
11129
11130 #ifdef CONFIG_PM
11131 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11132                                         struct cfg80211_registered_device *rdev)
11133 {
11134         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11135         struct nlattr *nl_pats, *nl_pat;
11136         int i, pat_len;
11137
11138         if (!wowlan->n_patterns)
11139                 return 0;
11140
11141         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11142         if (!nl_pats)
11143                 return -ENOBUFS;
11144
11145         for (i = 0; i < wowlan->n_patterns; i++) {
11146                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11147                 if (!nl_pat)
11148                         return -ENOBUFS;
11149                 pat_len = wowlan->patterns[i].pattern_len;
11150                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11151                             wowlan->patterns[i].mask) ||
11152                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11153                             wowlan->patterns[i].pattern) ||
11154                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11155                                 wowlan->patterns[i].pkt_offset))
11156                         return -ENOBUFS;
11157                 nla_nest_end(msg, nl_pat);
11158         }
11159         nla_nest_end(msg, nl_pats);
11160
11161         return 0;
11162 }
11163
11164 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11165                                    struct cfg80211_wowlan_tcp *tcp)
11166 {
11167         struct nlattr *nl_tcp;
11168
11169         if (!tcp)
11170                 return 0;
11171
11172         nl_tcp = nla_nest_start_noflag(msg,
11173                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11174         if (!nl_tcp)
11175                 return -ENOBUFS;
11176
11177         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11178             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11179             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11180             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11181             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11182             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11183                     tcp->payload_len, tcp->payload) ||
11184             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11185                         tcp->data_interval) ||
11186             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11187                     tcp->wake_len, tcp->wake_data) ||
11188             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11189                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11190                 return -ENOBUFS;
11191
11192         if (tcp->payload_seq.len &&
11193             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11194                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11195                 return -ENOBUFS;
11196
11197         if (tcp->payload_tok.len &&
11198             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11199                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11200                     &tcp->payload_tok))
11201                 return -ENOBUFS;
11202
11203         nla_nest_end(msg, nl_tcp);
11204
11205         return 0;
11206 }
11207
11208 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11209                                   struct cfg80211_sched_scan_request *req)
11210 {
11211         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11212         int i;
11213
11214         if (!req)
11215                 return 0;
11216
11217         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11218         if (!nd)
11219                 return -ENOBUFS;
11220
11221         if (req->n_scan_plans == 1 &&
11222             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11223                         req->scan_plans[0].interval * 1000))
11224                 return -ENOBUFS;
11225
11226         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11227                 return -ENOBUFS;
11228
11229         if (req->relative_rssi_set) {
11230                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11231
11232                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11233                                req->relative_rssi))
11234                         return -ENOBUFS;
11235
11236                 rssi_adjust.band = req->rssi_adjust.band;
11237                 rssi_adjust.delta = req->rssi_adjust.delta;
11238                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11239                             sizeof(rssi_adjust), &rssi_adjust))
11240                         return -ENOBUFS;
11241         }
11242
11243         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11244         if (!freqs)
11245                 return -ENOBUFS;
11246
11247         for (i = 0; i < req->n_channels; i++) {
11248                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11249                         return -ENOBUFS;
11250         }
11251
11252         nla_nest_end(msg, freqs);
11253
11254         if (req->n_match_sets) {
11255                 matches = nla_nest_start_noflag(msg,
11256                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11257                 if (!matches)
11258                         return -ENOBUFS;
11259
11260                 for (i = 0; i < req->n_match_sets; i++) {
11261                         match = nla_nest_start_noflag(msg, i);
11262                         if (!match)
11263                                 return -ENOBUFS;
11264
11265                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11266                                     req->match_sets[i].ssid.ssid_len,
11267                                     req->match_sets[i].ssid.ssid))
11268                                 return -ENOBUFS;
11269                         nla_nest_end(msg, match);
11270                 }
11271                 nla_nest_end(msg, matches);
11272         }
11273
11274         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11275         if (!scan_plans)
11276                 return -ENOBUFS;
11277
11278         for (i = 0; i < req->n_scan_plans; i++) {
11279                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11280                 if (!scan_plan)
11281                         return -ENOBUFS;
11282
11283                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11284                                 req->scan_plans[i].interval) ||
11285                     (req->scan_plans[i].iterations &&
11286                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11287                                  req->scan_plans[i].iterations)))
11288                         return -ENOBUFS;
11289                 nla_nest_end(msg, scan_plan);
11290         }
11291         nla_nest_end(msg, scan_plans);
11292
11293         nla_nest_end(msg, nd);
11294
11295         return 0;
11296 }
11297
11298 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11299 {
11300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11301         struct sk_buff *msg;
11302         void *hdr;
11303         u32 size = NLMSG_DEFAULT_SIZE;
11304
11305         if (!rdev->wiphy.wowlan)
11306                 return -EOPNOTSUPP;
11307
11308         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11309                 /* adjust size to have room for all the data */
11310                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11311                         rdev->wiphy.wowlan_config->tcp->payload_len +
11312                         rdev->wiphy.wowlan_config->tcp->wake_len +
11313                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11314         }
11315
11316         msg = nlmsg_new(size, GFP_KERNEL);
11317         if (!msg)
11318                 return -ENOMEM;
11319
11320         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11321                              NL80211_CMD_GET_WOWLAN);
11322         if (!hdr)
11323                 goto nla_put_failure;
11324
11325         if (rdev->wiphy.wowlan_config) {
11326                 struct nlattr *nl_wowlan;
11327
11328                 nl_wowlan = nla_nest_start_noflag(msg,
11329                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11330                 if (!nl_wowlan)
11331                         goto nla_put_failure;
11332
11333                 if ((rdev->wiphy.wowlan_config->any &&
11334                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11335                     (rdev->wiphy.wowlan_config->disconnect &&
11336                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11337                     (rdev->wiphy.wowlan_config->magic_pkt &&
11338                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11339                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11340                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11341                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11342                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11343                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11344                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11345                     (rdev->wiphy.wowlan_config->rfkill_release &&
11346                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11347                         goto nla_put_failure;
11348
11349                 if (nl80211_send_wowlan_patterns(msg, rdev))
11350                         goto nla_put_failure;
11351
11352                 if (nl80211_send_wowlan_tcp(msg,
11353                                             rdev->wiphy.wowlan_config->tcp))
11354                         goto nla_put_failure;
11355
11356                 if (nl80211_send_wowlan_nd(
11357                             msg,
11358                             rdev->wiphy.wowlan_config->nd_config))
11359                         goto nla_put_failure;
11360
11361                 nla_nest_end(msg, nl_wowlan);
11362         }
11363
11364         genlmsg_end(msg, hdr);
11365         return genlmsg_reply(msg, info);
11366
11367 nla_put_failure:
11368         nlmsg_free(msg);
11369         return -ENOBUFS;
11370 }
11371
11372 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11373                                     struct nlattr *attr,
11374                                     struct cfg80211_wowlan *trig)
11375 {
11376         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11377         struct cfg80211_wowlan_tcp *cfg;
11378         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11379         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11380         u32 size;
11381         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11382         int err, port;
11383
11384         if (!rdev->wiphy.wowlan->tcp)
11385                 return -EINVAL;
11386
11387         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11388                                           nl80211_wowlan_tcp_policy, NULL);
11389         if (err)
11390                 return err;
11391
11392         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11393             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11394             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11395             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11396             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11397             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11398             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11399             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11400                 return -EINVAL;
11401
11402         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11403         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11404                 return -EINVAL;
11405
11406         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11407                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11408             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11409                 return -EINVAL;
11410
11411         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11412         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11413                 return -EINVAL;
11414
11415         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11416         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11417                 return -EINVAL;
11418
11419         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11420                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11421
11422                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11423                 tokens_size = tokln - sizeof(*tok);
11424
11425                 if (!tok->len || tokens_size % tok->len)
11426                         return -EINVAL;
11427                 if (!rdev->wiphy.wowlan->tcp->tok)
11428                         return -EINVAL;
11429                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11430                         return -EINVAL;
11431                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11432                         return -EINVAL;
11433                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11434                         return -EINVAL;
11435                 if (tok->offset + tok->len > data_size)
11436                         return -EINVAL;
11437         }
11438
11439         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11440                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11441                 if (!rdev->wiphy.wowlan->tcp->seq)
11442                         return -EINVAL;
11443                 if (seq->len == 0 || seq->len > 4)
11444                         return -EINVAL;
11445                 if (seq->len + seq->offset > data_size)
11446                         return -EINVAL;
11447         }
11448
11449         size = sizeof(*cfg);
11450         size += data_size;
11451         size += wake_size + wake_mask_size;
11452         size += tokens_size;
11453
11454         cfg = kzalloc(size, GFP_KERNEL);
11455         if (!cfg)
11456                 return -ENOMEM;
11457         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11458         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11459         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11460                ETH_ALEN);
11461         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11462                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11463         else
11464                 port = 0;
11465 #ifdef CONFIG_INET
11466         /* allocate a socket and port for it and use it */
11467         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11468                             IPPROTO_TCP, &cfg->sock, 1);
11469         if (err) {
11470                 kfree(cfg);
11471                 return err;
11472         }
11473         if (inet_csk_get_port(cfg->sock->sk, port)) {
11474                 sock_release(cfg->sock);
11475                 kfree(cfg);
11476                 return -EADDRINUSE;
11477         }
11478         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11479 #else
11480         if (!port) {
11481                 kfree(cfg);
11482                 return -EINVAL;
11483         }
11484         cfg->src_port = port;
11485 #endif
11486
11487         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11488         cfg->payload_len = data_size;
11489         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11490         memcpy((void *)cfg->payload,
11491                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11492                data_size);
11493         if (seq)
11494                 cfg->payload_seq = *seq;
11495         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11496         cfg->wake_len = wake_size;
11497         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11498         memcpy((void *)cfg->wake_data,
11499                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11500                wake_size);
11501         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11502                          data_size + wake_size;
11503         memcpy((void *)cfg->wake_mask,
11504                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11505                wake_mask_size);
11506         if (tok) {
11507                 cfg->tokens_size = tokens_size;
11508                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11509         }
11510
11511         trig->tcp = cfg;
11512
11513         return 0;
11514 }
11515
11516 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11517                                    const struct wiphy_wowlan_support *wowlan,
11518                                    struct nlattr *attr,
11519                                    struct cfg80211_wowlan *trig)
11520 {
11521         struct nlattr **tb;
11522         int err;
11523
11524         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11525         if (!tb)
11526                 return -ENOMEM;
11527
11528         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11529                 err = -EOPNOTSUPP;
11530                 goto out;
11531         }
11532
11533         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11534                                           nl80211_policy, NULL);
11535         if (err)
11536                 goto out;
11537
11538         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11539                                                    wowlan->max_nd_match_sets);
11540         err = PTR_ERR_OR_ZERO(trig->nd_config);
11541         if (err)
11542                 trig->nd_config = NULL;
11543
11544 out:
11545         kfree(tb);
11546         return err;
11547 }
11548
11549 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11550 {
11551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11552         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11553         struct cfg80211_wowlan new_triggers = {};
11554         struct cfg80211_wowlan *ntrig;
11555         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11556         int err, i;
11557         bool prev_enabled = rdev->wiphy.wowlan_config;
11558         bool regular = false;
11559
11560         if (!wowlan)
11561                 return -EOPNOTSUPP;
11562
11563         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11564                 cfg80211_rdev_free_wowlan(rdev);
11565                 rdev->wiphy.wowlan_config = NULL;
11566                 goto set_wakeup;
11567         }
11568
11569         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11570                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11571                                           nl80211_wowlan_policy, info->extack);
11572         if (err)
11573                 return err;
11574
11575         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11576                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11577                         return -EINVAL;
11578                 new_triggers.any = true;
11579         }
11580
11581         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11582                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11583                         return -EINVAL;
11584                 new_triggers.disconnect = true;
11585                 regular = true;
11586         }
11587
11588         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11589                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11590                         return -EINVAL;
11591                 new_triggers.magic_pkt = true;
11592                 regular = true;
11593         }
11594
11595         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11596                 return -EINVAL;
11597
11598         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11599                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11600                         return -EINVAL;
11601                 new_triggers.gtk_rekey_failure = true;
11602                 regular = true;
11603         }
11604
11605         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11606                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11607                         return -EINVAL;
11608                 new_triggers.eap_identity_req = true;
11609                 regular = true;
11610         }
11611
11612         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11613                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11614                         return -EINVAL;
11615                 new_triggers.four_way_handshake = true;
11616                 regular = true;
11617         }
11618
11619         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11620                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11621                         return -EINVAL;
11622                 new_triggers.rfkill_release = true;
11623                 regular = true;
11624         }
11625
11626         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11627                 struct nlattr *pat;
11628                 int n_patterns = 0;
11629                 int rem, pat_len, mask_len, pkt_offset;
11630                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11631
11632                 regular = true;
11633
11634                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11635                                     rem)
11636                         n_patterns++;
11637                 if (n_patterns > wowlan->n_patterns)
11638                         return -EINVAL;
11639
11640                 new_triggers.patterns = kcalloc(n_patterns,
11641                                                 sizeof(new_triggers.patterns[0]),
11642                                                 GFP_KERNEL);
11643                 if (!new_triggers.patterns)
11644                         return -ENOMEM;
11645
11646                 new_triggers.n_patterns = n_patterns;
11647                 i = 0;
11648
11649                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11650                                     rem) {
11651                         u8 *mask_pat;
11652
11653                         err = nla_parse_nested_deprecated(pat_tb,
11654                                                           MAX_NL80211_PKTPAT,
11655                                                           pat,
11656                                                           nl80211_packet_pattern_policy,
11657                                                           info->extack);
11658                         if (err)
11659                                 goto error;
11660
11661                         err = -EINVAL;
11662                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11663                             !pat_tb[NL80211_PKTPAT_PATTERN])
11664                                 goto error;
11665                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11666                         mask_len = DIV_ROUND_UP(pat_len, 8);
11667                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11668                                 goto error;
11669                         if (pat_len > wowlan->pattern_max_len ||
11670                             pat_len < wowlan->pattern_min_len)
11671                                 goto error;
11672
11673                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11674                                 pkt_offset = 0;
11675                         else
11676                                 pkt_offset = nla_get_u32(
11677                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11678                         if (pkt_offset > wowlan->max_pkt_offset)
11679                                 goto error;
11680                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11681
11682                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11683                         if (!mask_pat) {
11684                                 err = -ENOMEM;
11685                                 goto error;
11686                         }
11687                         new_triggers.patterns[i].mask = mask_pat;
11688                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11689                                mask_len);
11690                         mask_pat += mask_len;
11691                         new_triggers.patterns[i].pattern = mask_pat;
11692                         new_triggers.patterns[i].pattern_len = pat_len;
11693                         memcpy(mask_pat,
11694                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11695                                pat_len);
11696                         i++;
11697                 }
11698         }
11699
11700         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11701                 regular = true;
11702                 err = nl80211_parse_wowlan_tcp(
11703                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11704                         &new_triggers);
11705                 if (err)
11706                         goto error;
11707         }
11708
11709         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11710                 regular = true;
11711                 err = nl80211_parse_wowlan_nd(
11712                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11713                         &new_triggers);
11714                 if (err)
11715                         goto error;
11716         }
11717
11718         /* The 'any' trigger means the device continues operating more or less
11719          * as in its normal operation mode and wakes up the host on most of the
11720          * normal interrupts (like packet RX, ...)
11721          * It therefore makes little sense to combine with the more constrained
11722          * wakeup trigger modes.
11723          */
11724         if (new_triggers.any && regular) {
11725                 err = -EINVAL;
11726                 goto error;
11727         }
11728
11729         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11730         if (!ntrig) {
11731                 err = -ENOMEM;
11732                 goto error;
11733         }
11734         cfg80211_rdev_free_wowlan(rdev);
11735         rdev->wiphy.wowlan_config = ntrig;
11736
11737  set_wakeup:
11738         if (rdev->ops->set_wakeup &&
11739             prev_enabled != !!rdev->wiphy.wowlan_config)
11740                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11741
11742         return 0;
11743  error:
11744         for (i = 0; i < new_triggers.n_patterns; i++)
11745                 kfree(new_triggers.patterns[i].mask);
11746         kfree(new_triggers.patterns);
11747         if (new_triggers.tcp && new_triggers.tcp->sock)
11748                 sock_release(new_triggers.tcp->sock);
11749         kfree(new_triggers.tcp);
11750         kfree(new_triggers.nd_config);
11751         return err;
11752 }
11753 #endif
11754
11755 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11756                                        struct cfg80211_registered_device *rdev)
11757 {
11758         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11759         int i, j, pat_len;
11760         struct cfg80211_coalesce_rules *rule;
11761
11762         if (!rdev->coalesce->n_rules)
11763                 return 0;
11764
11765         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11766         if (!nl_rules)
11767                 return -ENOBUFS;
11768
11769         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11770                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11771                 if (!nl_rule)
11772                         return -ENOBUFS;
11773
11774                 rule = &rdev->coalesce->rules[i];
11775                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11776                                 rule->delay))
11777                         return -ENOBUFS;
11778
11779                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11780                                 rule->condition))
11781                         return -ENOBUFS;
11782
11783                 nl_pats = nla_nest_start_noflag(msg,
11784                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11785                 if (!nl_pats)
11786                         return -ENOBUFS;
11787
11788                 for (j = 0; j < rule->n_patterns; j++) {
11789                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11790                         if (!nl_pat)
11791                                 return -ENOBUFS;
11792                         pat_len = rule->patterns[j].pattern_len;
11793                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11794                                     DIV_ROUND_UP(pat_len, 8),
11795                                     rule->patterns[j].mask) ||
11796                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11797                                     rule->patterns[j].pattern) ||
11798                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11799                                         rule->patterns[j].pkt_offset))
11800                                 return -ENOBUFS;
11801                         nla_nest_end(msg, nl_pat);
11802                 }
11803                 nla_nest_end(msg, nl_pats);
11804                 nla_nest_end(msg, nl_rule);
11805         }
11806         nla_nest_end(msg, nl_rules);
11807
11808         return 0;
11809 }
11810
11811 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11812 {
11813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11814         struct sk_buff *msg;
11815         void *hdr;
11816
11817         if (!rdev->wiphy.coalesce)
11818                 return -EOPNOTSUPP;
11819
11820         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11821         if (!msg)
11822                 return -ENOMEM;
11823
11824         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11825                              NL80211_CMD_GET_COALESCE);
11826         if (!hdr)
11827                 goto nla_put_failure;
11828
11829         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11830                 goto nla_put_failure;
11831
11832         genlmsg_end(msg, hdr);
11833         return genlmsg_reply(msg, info);
11834
11835 nla_put_failure:
11836         nlmsg_free(msg);
11837         return -ENOBUFS;
11838 }
11839
11840 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11841 {
11842         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11843         int i, j;
11844         struct cfg80211_coalesce_rules *rule;
11845
11846         if (!coalesce)
11847                 return;
11848
11849         for (i = 0; i < coalesce->n_rules; i++) {
11850                 rule = &coalesce->rules[i];
11851                 for (j = 0; j < rule->n_patterns; j++)
11852                         kfree(rule->patterns[j].mask);
11853                 kfree(rule->patterns);
11854         }
11855         kfree(coalesce->rules);
11856         kfree(coalesce);
11857         rdev->coalesce = NULL;
11858 }
11859
11860 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11861                                        struct nlattr *rule,
11862                                        struct cfg80211_coalesce_rules *new_rule)
11863 {
11864         int err, i;
11865         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11866         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11867         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11868         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11869
11870         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11871                                           rule, nl80211_coalesce_policy, NULL);
11872         if (err)
11873                 return err;
11874
11875         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11876                 new_rule->delay =
11877                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11878         if (new_rule->delay > coalesce->max_delay)
11879                 return -EINVAL;
11880
11881         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11882                 new_rule->condition =
11883                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11884
11885         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11886                 return -EINVAL;
11887
11888         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11889                             rem)
11890                 n_patterns++;
11891         if (n_patterns > coalesce->n_patterns)
11892                 return -EINVAL;
11893
11894         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11895                                      GFP_KERNEL);
11896         if (!new_rule->patterns)
11897                 return -ENOMEM;
11898
11899         new_rule->n_patterns = n_patterns;
11900         i = 0;
11901
11902         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11903                             rem) {
11904                 u8 *mask_pat;
11905
11906                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11907                                                   pat,
11908                                                   nl80211_packet_pattern_policy,
11909                                                   NULL);
11910                 if (err)
11911                         return err;
11912
11913                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11914                     !pat_tb[NL80211_PKTPAT_PATTERN])
11915                         return -EINVAL;
11916                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11917                 mask_len = DIV_ROUND_UP(pat_len, 8);
11918                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11919                         return -EINVAL;
11920                 if (pat_len > coalesce->pattern_max_len ||
11921                     pat_len < coalesce->pattern_min_len)
11922                         return -EINVAL;
11923
11924                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11925                         pkt_offset = 0;
11926                 else
11927                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11928                 if (pkt_offset > coalesce->max_pkt_offset)
11929                         return -EINVAL;
11930                 new_rule->patterns[i].pkt_offset = pkt_offset;
11931
11932                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11933                 if (!mask_pat)
11934                         return -ENOMEM;
11935
11936                 new_rule->patterns[i].mask = mask_pat;
11937                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11938                        mask_len);
11939
11940                 mask_pat += mask_len;
11941                 new_rule->patterns[i].pattern = mask_pat;
11942                 new_rule->patterns[i].pattern_len = pat_len;
11943                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11944                        pat_len);
11945                 i++;
11946         }
11947
11948         return 0;
11949 }
11950
11951 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11952 {
11953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11954         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11955         struct cfg80211_coalesce new_coalesce = {};
11956         struct cfg80211_coalesce *n_coalesce;
11957         int err, rem_rule, n_rules = 0, i, j;
11958         struct nlattr *rule;
11959         struct cfg80211_coalesce_rules *tmp_rule;
11960
11961         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11962                 return -EOPNOTSUPP;
11963
11964         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11965                 cfg80211_rdev_free_coalesce(rdev);
11966                 rdev_set_coalesce(rdev, NULL);
11967                 return 0;
11968         }
11969
11970         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11971                             rem_rule)
11972                 n_rules++;
11973         if (n_rules > coalesce->n_rules)
11974                 return -EINVAL;
11975
11976         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11977                                      GFP_KERNEL);
11978         if (!new_coalesce.rules)
11979                 return -ENOMEM;
11980
11981         new_coalesce.n_rules = n_rules;
11982         i = 0;
11983
11984         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11985                             rem_rule) {
11986                 err = nl80211_parse_coalesce_rule(rdev, rule,
11987                                                   &new_coalesce.rules[i]);
11988                 if (err)
11989                         goto error;
11990
11991                 i++;
11992         }
11993
11994         err = rdev_set_coalesce(rdev, &new_coalesce);
11995         if (err)
11996                 goto error;
11997
11998         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11999         if (!n_coalesce) {
12000                 err = -ENOMEM;
12001                 goto error;
12002         }
12003         cfg80211_rdev_free_coalesce(rdev);
12004         rdev->coalesce = n_coalesce;
12005
12006         return 0;
12007 error:
12008         for (i = 0; i < new_coalesce.n_rules; i++) {
12009                 tmp_rule = &new_coalesce.rules[i];
12010                 for (j = 0; j < tmp_rule->n_patterns; j++)
12011                         kfree(tmp_rule->patterns[j].mask);
12012                 kfree(tmp_rule->patterns);
12013         }
12014         kfree(new_coalesce.rules);
12015
12016         return err;
12017 }
12018
12019 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12020 {
12021         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12022         struct net_device *dev = info->user_ptr[1];
12023         struct wireless_dev *wdev = dev->ieee80211_ptr;
12024         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12025         struct cfg80211_gtk_rekey_data rekey_data;
12026         int err;
12027
12028         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12029                 return -EINVAL;
12030
12031         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12032                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12033                                           nl80211_rekey_policy, info->extack);
12034         if (err)
12035                 return err;
12036
12037         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12038             !tb[NL80211_REKEY_DATA_KCK])
12039                 return -EINVAL;
12040         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12041                 return -ERANGE;
12042         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12043                 return -ERANGE;
12044         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12045                 return -ERANGE;
12046
12047         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12048         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12049         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12050
12051         wdev_lock(wdev);
12052         if (!wdev->current_bss) {
12053                 err = -ENOTCONN;
12054                 goto out;
12055         }
12056
12057         if (!rdev->ops->set_rekey_data) {
12058                 err = -EOPNOTSUPP;
12059                 goto out;
12060         }
12061
12062         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12063  out:
12064         wdev_unlock(wdev);
12065         return err;
12066 }
12067
12068 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12069                                              struct genl_info *info)
12070 {
12071         struct net_device *dev = info->user_ptr[1];
12072         struct wireless_dev *wdev = dev->ieee80211_ptr;
12073
12074         if (wdev->iftype != NL80211_IFTYPE_AP &&
12075             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12076                 return -EINVAL;
12077
12078         if (wdev->ap_unexpected_nlportid)
12079                 return -EBUSY;
12080
12081         wdev->ap_unexpected_nlportid = info->snd_portid;
12082         return 0;
12083 }
12084
12085 static int nl80211_probe_client(struct sk_buff *skb,
12086                                 struct genl_info *info)
12087 {
12088         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12089         struct net_device *dev = info->user_ptr[1];
12090         struct wireless_dev *wdev = dev->ieee80211_ptr;
12091         struct sk_buff *msg;
12092         void *hdr;
12093         const u8 *addr;
12094         u64 cookie;
12095         int err;
12096
12097         if (wdev->iftype != NL80211_IFTYPE_AP &&
12098             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12099                 return -EOPNOTSUPP;
12100
12101         if (!info->attrs[NL80211_ATTR_MAC])
12102                 return -EINVAL;
12103
12104         if (!rdev->ops->probe_client)
12105                 return -EOPNOTSUPP;
12106
12107         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12108         if (!msg)
12109                 return -ENOMEM;
12110
12111         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12112                              NL80211_CMD_PROBE_CLIENT);
12113         if (!hdr) {
12114                 err = -ENOBUFS;
12115                 goto free_msg;
12116         }
12117
12118         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12119
12120         err = rdev_probe_client(rdev, dev, addr, &cookie);
12121         if (err)
12122                 goto free_msg;
12123
12124         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12125                               NL80211_ATTR_PAD))
12126                 goto nla_put_failure;
12127
12128         genlmsg_end(msg, hdr);
12129
12130         return genlmsg_reply(msg, info);
12131
12132  nla_put_failure:
12133         err = -ENOBUFS;
12134  free_msg:
12135         nlmsg_free(msg);
12136         return err;
12137 }
12138
12139 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12140 {
12141         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12142         struct cfg80211_beacon_registration *reg, *nreg;
12143         int rv;
12144
12145         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12146                 return -EOPNOTSUPP;
12147
12148         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12149         if (!nreg)
12150                 return -ENOMEM;
12151
12152         /* First, check if already registered. */
12153         spin_lock_bh(&rdev->beacon_registrations_lock);
12154         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12155                 if (reg->nlportid == info->snd_portid) {
12156                         rv = -EALREADY;
12157                         goto out_err;
12158                 }
12159         }
12160         /* Add it to the list */
12161         nreg->nlportid = info->snd_portid;
12162         list_add(&nreg->list, &rdev->beacon_registrations);
12163
12164         spin_unlock_bh(&rdev->beacon_registrations_lock);
12165
12166         return 0;
12167 out_err:
12168         spin_unlock_bh(&rdev->beacon_registrations_lock);
12169         kfree(nreg);
12170         return rv;
12171 }
12172
12173 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12174 {
12175         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12176         struct wireless_dev *wdev = info->user_ptr[1];
12177         int err;
12178
12179         if (!rdev->ops->start_p2p_device)
12180                 return -EOPNOTSUPP;
12181
12182         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12183                 return -EOPNOTSUPP;
12184
12185         if (wdev_running(wdev))
12186                 return 0;
12187
12188         if (rfkill_blocked(rdev->rfkill))
12189                 return -ERFKILL;
12190
12191         err = rdev_start_p2p_device(rdev, wdev);
12192         if (err)
12193                 return err;
12194
12195         wdev->is_running = true;
12196         rdev->opencount++;
12197
12198         return 0;
12199 }
12200
12201 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12202 {
12203         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12204         struct wireless_dev *wdev = info->user_ptr[1];
12205
12206         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12207                 return -EOPNOTSUPP;
12208
12209         if (!rdev->ops->stop_p2p_device)
12210                 return -EOPNOTSUPP;
12211
12212         cfg80211_stop_p2p_device(rdev, wdev);
12213
12214         return 0;
12215 }
12216
12217 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12218 {
12219         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12220         struct wireless_dev *wdev = info->user_ptr[1];
12221         struct cfg80211_nan_conf conf = {};
12222         int err;
12223
12224         if (wdev->iftype != NL80211_IFTYPE_NAN)
12225                 return -EOPNOTSUPP;
12226
12227         if (wdev_running(wdev))
12228                 return -EEXIST;
12229
12230         if (rfkill_blocked(rdev->rfkill))
12231                 return -ERFKILL;
12232
12233         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12234                 return -EINVAL;
12235
12236         conf.master_pref =
12237                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12238
12239         if (info->attrs[NL80211_ATTR_BANDS]) {
12240                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12241
12242                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12243                         return -EOPNOTSUPP;
12244
12245                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12246                         return -EINVAL;
12247
12248                 conf.bands = bands;
12249         }
12250
12251         err = rdev_start_nan(rdev, wdev, &conf);
12252         if (err)
12253                 return err;
12254
12255         wdev->is_running = true;
12256         rdev->opencount++;
12257
12258         return 0;
12259 }
12260
12261 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12262 {
12263         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12264         struct wireless_dev *wdev = info->user_ptr[1];
12265
12266         if (wdev->iftype != NL80211_IFTYPE_NAN)
12267                 return -EOPNOTSUPP;
12268
12269         cfg80211_stop_nan(rdev, wdev);
12270
12271         return 0;
12272 }
12273
12274 static int validate_nan_filter(struct nlattr *filter_attr)
12275 {
12276         struct nlattr *attr;
12277         int len = 0, n_entries = 0, rem;
12278
12279         nla_for_each_nested(attr, filter_attr, rem) {
12280                 len += nla_len(attr);
12281                 n_entries++;
12282         }
12283
12284         if (len >= U8_MAX)
12285                 return -EINVAL;
12286
12287         return n_entries;
12288 }
12289
12290 static int handle_nan_filter(struct nlattr *attr_filter,
12291                              struct cfg80211_nan_func *func,
12292                              bool tx)
12293 {
12294         struct nlattr *attr;
12295         int n_entries, rem, i;
12296         struct cfg80211_nan_func_filter *filter;
12297
12298         n_entries = validate_nan_filter(attr_filter);
12299         if (n_entries < 0)
12300                 return n_entries;
12301
12302         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12303
12304         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12305         if (!filter)
12306                 return -ENOMEM;
12307
12308         i = 0;
12309         nla_for_each_nested(attr, attr_filter, rem) {
12310                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12311                 filter[i].len = nla_len(attr);
12312                 i++;
12313         }
12314         if (tx) {
12315                 func->num_tx_filters = n_entries;
12316                 func->tx_filters = filter;
12317         } else {
12318                 func->num_rx_filters = n_entries;
12319                 func->rx_filters = filter;
12320         }
12321
12322         return 0;
12323 }
12324
12325 static int nl80211_nan_add_func(struct sk_buff *skb,
12326                                 struct genl_info *info)
12327 {
12328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12329         struct wireless_dev *wdev = info->user_ptr[1];
12330         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12331         struct cfg80211_nan_func *func;
12332         struct sk_buff *msg = NULL;
12333         void *hdr = NULL;
12334         int err = 0;
12335
12336         if (wdev->iftype != NL80211_IFTYPE_NAN)
12337                 return -EOPNOTSUPP;
12338
12339         if (!wdev_running(wdev))
12340                 return -ENOTCONN;
12341
12342         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12343                 return -EINVAL;
12344
12345         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12346                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12347                                           nl80211_nan_func_policy,
12348                                           info->extack);
12349         if (err)
12350                 return err;
12351
12352         func = kzalloc(sizeof(*func), GFP_KERNEL);
12353         if (!func)
12354                 return -ENOMEM;
12355
12356         func->cookie = cfg80211_assign_cookie(rdev);
12357
12358         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12359             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12360                 err = -EINVAL;
12361                 goto out;
12362         }
12363
12364
12365         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12366
12367         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12368                 err = -EINVAL;
12369                 goto out;
12370         }
12371
12372         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12373                sizeof(func->service_id));
12374
12375         func->close_range =
12376                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12377
12378         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12379                 func->serv_spec_info_len =
12380                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12381                 func->serv_spec_info =
12382                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12383                                 func->serv_spec_info_len,
12384                                 GFP_KERNEL);
12385                 if (!func->serv_spec_info) {
12386                         err = -ENOMEM;
12387                         goto out;
12388                 }
12389         }
12390
12391         if (tb[NL80211_NAN_FUNC_TTL])
12392                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12393
12394         switch (func->type) {
12395         case NL80211_NAN_FUNC_PUBLISH:
12396                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12397                         err = -EINVAL;
12398                         goto out;
12399                 }
12400
12401                 func->publish_type =
12402                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12403                 func->publish_bcast =
12404                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12405
12406                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12407                         func->publish_bcast) {
12408                         err = -EINVAL;
12409                         goto out;
12410                 }
12411                 break;
12412         case NL80211_NAN_FUNC_SUBSCRIBE:
12413                 func->subscribe_active =
12414                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12415                 break;
12416         case NL80211_NAN_FUNC_FOLLOW_UP:
12417                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12418                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12419                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12420                         err = -EINVAL;
12421                         goto out;
12422                 }
12423
12424                 func->followup_id =
12425                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12426                 func->followup_reqid =
12427                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12428                 memcpy(func->followup_dest.addr,
12429                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12430                        sizeof(func->followup_dest.addr));
12431                 if (func->ttl) {
12432                         err = -EINVAL;
12433                         goto out;
12434                 }
12435                 break;
12436         default:
12437                 err = -EINVAL;
12438                 goto out;
12439         }
12440
12441         if (tb[NL80211_NAN_FUNC_SRF]) {
12442                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12443
12444                 err = nla_parse_nested_deprecated(srf_tb,
12445                                                   NL80211_NAN_SRF_ATTR_MAX,
12446                                                   tb[NL80211_NAN_FUNC_SRF],
12447                                                   nl80211_nan_srf_policy,
12448                                                   info->extack);
12449                 if (err)
12450                         goto out;
12451
12452                 func->srf_include =
12453                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12454
12455                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12456                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12457                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12458                                 err = -EINVAL;
12459                                 goto out;
12460                         }
12461
12462                         func->srf_bf_len =
12463                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12464                         func->srf_bf =
12465                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12466                                         func->srf_bf_len, GFP_KERNEL);
12467                         if (!func->srf_bf) {
12468                                 err = -ENOMEM;
12469                                 goto out;
12470                         }
12471
12472                         func->srf_bf_idx =
12473                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12474                 } else {
12475                         struct nlattr *attr, *mac_attr =
12476                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12477                         int n_entries, rem, i = 0;
12478
12479                         if (!mac_attr) {
12480                                 err = -EINVAL;
12481                                 goto out;
12482                         }
12483
12484                         n_entries = validate_acl_mac_addrs(mac_attr);
12485                         if (n_entries <= 0) {
12486                                 err = -EINVAL;
12487                                 goto out;
12488                         }
12489
12490                         func->srf_num_macs = n_entries;
12491                         func->srf_macs =
12492                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12493                                         GFP_KERNEL);
12494                         if (!func->srf_macs) {
12495                                 err = -ENOMEM;
12496                                 goto out;
12497                         }
12498
12499                         nla_for_each_nested(attr, mac_attr, rem)
12500                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12501                                        sizeof(*func->srf_macs));
12502                 }
12503         }
12504
12505         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12506                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12507                                         func, true);
12508                 if (err)
12509                         goto out;
12510         }
12511
12512         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12513                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12514                                         func, false);
12515                 if (err)
12516                         goto out;
12517         }
12518
12519         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12520         if (!msg) {
12521                 err = -ENOMEM;
12522                 goto out;
12523         }
12524
12525         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12526                              NL80211_CMD_ADD_NAN_FUNCTION);
12527         /* This can't really happen - we just allocated 4KB */
12528         if (WARN_ON(!hdr)) {
12529                 err = -ENOMEM;
12530                 goto out;
12531         }
12532
12533         err = rdev_add_nan_func(rdev, wdev, func);
12534 out:
12535         if (err < 0) {
12536                 cfg80211_free_nan_func(func);
12537                 nlmsg_free(msg);
12538                 return err;
12539         }
12540
12541         /* propagate the instance id and cookie to userspace  */
12542         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12543                               NL80211_ATTR_PAD))
12544                 goto nla_put_failure;
12545
12546         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12547         if (!func_attr)
12548                 goto nla_put_failure;
12549
12550         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12551                        func->instance_id))
12552                 goto nla_put_failure;
12553
12554         nla_nest_end(msg, func_attr);
12555
12556         genlmsg_end(msg, hdr);
12557         return genlmsg_reply(msg, info);
12558
12559 nla_put_failure:
12560         nlmsg_free(msg);
12561         return -ENOBUFS;
12562 }
12563
12564 static int nl80211_nan_del_func(struct sk_buff *skb,
12565                                struct genl_info *info)
12566 {
12567         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12568         struct wireless_dev *wdev = info->user_ptr[1];
12569         u64 cookie;
12570
12571         if (wdev->iftype != NL80211_IFTYPE_NAN)
12572                 return -EOPNOTSUPP;
12573
12574         if (!wdev_running(wdev))
12575                 return -ENOTCONN;
12576
12577         if (!info->attrs[NL80211_ATTR_COOKIE])
12578                 return -EINVAL;
12579
12580         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12581
12582         rdev_del_nan_func(rdev, wdev, cookie);
12583
12584         return 0;
12585 }
12586
12587 static int nl80211_nan_change_config(struct sk_buff *skb,
12588                                      struct genl_info *info)
12589 {
12590         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12591         struct wireless_dev *wdev = info->user_ptr[1];
12592         struct cfg80211_nan_conf conf = {};
12593         u32 changed = 0;
12594
12595         if (wdev->iftype != NL80211_IFTYPE_NAN)
12596                 return -EOPNOTSUPP;
12597
12598         if (!wdev_running(wdev))
12599                 return -ENOTCONN;
12600
12601         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12602                 conf.master_pref =
12603                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12604                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12605                         return -EINVAL;
12606
12607                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12608         }
12609
12610         if (info->attrs[NL80211_ATTR_BANDS]) {
12611                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12612
12613                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12614                         return -EOPNOTSUPP;
12615
12616                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12617                         return -EINVAL;
12618
12619                 conf.bands = bands;
12620                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12621         }
12622
12623         if (!changed)
12624                 return -EINVAL;
12625
12626         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12627 }
12628
12629 void cfg80211_nan_match(struct wireless_dev *wdev,
12630                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12631 {
12632         struct wiphy *wiphy = wdev->wiphy;
12633         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12634         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12635         struct sk_buff *msg;
12636         void *hdr;
12637
12638         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12639                 return;
12640
12641         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12642         if (!msg)
12643                 return;
12644
12645         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12646         if (!hdr) {
12647                 nlmsg_free(msg);
12648                 return;
12649         }
12650
12651         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12652             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12653                                          wdev->netdev->ifindex)) ||
12654             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12655                               NL80211_ATTR_PAD))
12656                 goto nla_put_failure;
12657
12658         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12659                               NL80211_ATTR_PAD) ||
12660             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12661                 goto nla_put_failure;
12662
12663         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12664         if (!match_attr)
12665                 goto nla_put_failure;
12666
12667         local_func_attr = nla_nest_start_noflag(msg,
12668                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12669         if (!local_func_attr)
12670                 goto nla_put_failure;
12671
12672         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12673                 goto nla_put_failure;
12674
12675         nla_nest_end(msg, local_func_attr);
12676
12677         peer_func_attr = nla_nest_start_noflag(msg,
12678                                                NL80211_NAN_MATCH_FUNC_PEER);
12679         if (!peer_func_attr)
12680                 goto nla_put_failure;
12681
12682         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12683             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12684                 goto nla_put_failure;
12685
12686         if (match->info && match->info_len &&
12687             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12688                     match->info))
12689                 goto nla_put_failure;
12690
12691         nla_nest_end(msg, peer_func_attr);
12692         nla_nest_end(msg, match_attr);
12693         genlmsg_end(msg, hdr);
12694
12695         if (!wdev->owner_nlportid)
12696                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12697                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12698         else
12699                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12700                                 wdev->owner_nlportid);
12701
12702         return;
12703
12704 nla_put_failure:
12705         nlmsg_free(msg);
12706 }
12707 EXPORT_SYMBOL(cfg80211_nan_match);
12708
12709 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12710                                   u8 inst_id,
12711                                   enum nl80211_nan_func_term_reason reason,
12712                                   u64 cookie, gfp_t gfp)
12713 {
12714         struct wiphy *wiphy = wdev->wiphy;
12715         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12716         struct sk_buff *msg;
12717         struct nlattr *func_attr;
12718         void *hdr;
12719
12720         if (WARN_ON(!inst_id))
12721                 return;
12722
12723         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12724         if (!msg)
12725                 return;
12726
12727         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12728         if (!hdr) {
12729                 nlmsg_free(msg);
12730                 return;
12731         }
12732
12733         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12734             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12735                                          wdev->netdev->ifindex)) ||
12736             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12737                               NL80211_ATTR_PAD))
12738                 goto nla_put_failure;
12739
12740         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12741                               NL80211_ATTR_PAD))
12742                 goto nla_put_failure;
12743
12744         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12745         if (!func_attr)
12746                 goto nla_put_failure;
12747
12748         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12749             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12750                 goto nla_put_failure;
12751
12752         nla_nest_end(msg, func_attr);
12753         genlmsg_end(msg, hdr);
12754
12755         if (!wdev->owner_nlportid)
12756                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12757                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12758         else
12759                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12760                                 wdev->owner_nlportid);
12761
12762         return;
12763
12764 nla_put_failure:
12765         nlmsg_free(msg);
12766 }
12767 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12768
12769 static int nl80211_get_protocol_features(struct sk_buff *skb,
12770                                          struct genl_info *info)
12771 {
12772         void *hdr;
12773         struct sk_buff *msg;
12774
12775         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12776         if (!msg)
12777                 return -ENOMEM;
12778
12779         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12780                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12781         if (!hdr)
12782                 goto nla_put_failure;
12783
12784         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12785                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12786                 goto nla_put_failure;
12787
12788         genlmsg_end(msg, hdr);
12789         return genlmsg_reply(msg, info);
12790
12791  nla_put_failure:
12792         kfree_skb(msg);
12793         return -ENOBUFS;
12794 }
12795
12796 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12797 {
12798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12799         struct cfg80211_update_ft_ies_params ft_params;
12800         struct net_device *dev = info->user_ptr[1];
12801
12802         if (!rdev->ops->update_ft_ies)
12803                 return -EOPNOTSUPP;
12804
12805         if (!info->attrs[NL80211_ATTR_MDID] ||
12806             !info->attrs[NL80211_ATTR_IE])
12807                 return -EINVAL;
12808
12809         memset(&ft_params, 0, sizeof(ft_params));
12810         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12811         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12812         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12813
12814         return rdev_update_ft_ies(rdev, dev, &ft_params);
12815 }
12816
12817 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12818                                        struct genl_info *info)
12819 {
12820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12821         struct wireless_dev *wdev = info->user_ptr[1];
12822         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12823         u16 duration;
12824         int ret;
12825
12826         if (!rdev->ops->crit_proto_start)
12827                 return -EOPNOTSUPP;
12828
12829         if (WARN_ON(!rdev->ops->crit_proto_stop))
12830                 return -EINVAL;
12831
12832         if (rdev->crit_proto_nlportid)
12833                 return -EBUSY;
12834
12835         /* determine protocol if provided */
12836         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12837                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12838
12839         if (proto >= NUM_NL80211_CRIT_PROTO)
12840                 return -EINVAL;
12841
12842         /* timeout must be provided */
12843         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12844                 return -EINVAL;
12845
12846         duration =
12847                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12848
12849         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12850                 return -ERANGE;
12851
12852         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12853         if (!ret)
12854                 rdev->crit_proto_nlportid = info->snd_portid;
12855
12856         return ret;
12857 }
12858
12859 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12860                                       struct genl_info *info)
12861 {
12862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12863         struct wireless_dev *wdev = info->user_ptr[1];
12864
12865         if (!rdev->ops->crit_proto_stop)
12866                 return -EOPNOTSUPP;
12867
12868         if (rdev->crit_proto_nlportid) {
12869                 rdev->crit_proto_nlportid = 0;
12870                 rdev_crit_proto_stop(rdev, wdev);
12871         }
12872         return 0;
12873 }
12874
12875 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12876                                        struct nlattr *attr,
12877                                        struct netlink_ext_ack *extack)
12878 {
12879         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12880                 if (attr->nla_type & NLA_F_NESTED) {
12881                         NL_SET_ERR_MSG_ATTR(extack, attr,
12882                                             "unexpected nested data");
12883                         return -EINVAL;
12884                 }
12885
12886                 return 0;
12887         }
12888
12889         if (!(attr->nla_type & NLA_F_NESTED)) {
12890                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12891                 return -EINVAL;
12892         }
12893
12894         return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12895                                        extack);
12896 }
12897
12898 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12899 {
12900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12901         struct wireless_dev *wdev =
12902                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12903         int i, err;
12904         u32 vid, subcmd;
12905
12906         if (!rdev->wiphy.vendor_commands)
12907                 return -EOPNOTSUPP;
12908
12909         if (IS_ERR(wdev)) {
12910                 err = PTR_ERR(wdev);
12911                 if (err != -EINVAL)
12912                         return err;
12913                 wdev = NULL;
12914         } else if (wdev->wiphy != &rdev->wiphy) {
12915                 return -EINVAL;
12916         }
12917
12918         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12919             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12920                 return -EINVAL;
12921
12922         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12923         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12924         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12925                 const struct wiphy_vendor_command *vcmd;
12926                 void *data = NULL;
12927                 int len = 0;
12928
12929                 vcmd = &rdev->wiphy.vendor_commands[i];
12930
12931                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12932                         continue;
12933
12934                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12935                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12936                         if (!wdev)
12937                                 return -EINVAL;
12938                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12939                             !wdev->netdev)
12940                                 return -EINVAL;
12941
12942                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12943                                 if (!wdev_running(wdev))
12944                                         return -ENETDOWN;
12945                         }
12946
12947                         if (!vcmd->doit)
12948                                 return -EOPNOTSUPP;
12949                 } else {
12950                         wdev = NULL;
12951                 }
12952
12953                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12954                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12955                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12956
12957                         err = nl80211_vendor_check_policy(vcmd,
12958                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12959                                         info->extack);
12960                         if (err)
12961                                 return err;
12962                 }
12963
12964                 rdev->cur_cmd_info = info;
12965                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12966                 rdev->cur_cmd_info = NULL;
12967                 return err;
12968         }
12969
12970         return -EOPNOTSUPP;
12971 }
12972
12973 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12974                                        struct netlink_callback *cb,
12975                                        struct cfg80211_registered_device **rdev,
12976                                        struct wireless_dev **wdev)
12977 {
12978         struct nlattr **attrbuf;
12979         u32 vid, subcmd;
12980         unsigned int i;
12981         int vcmd_idx = -1;
12982         int err;
12983         void *data = NULL;
12984         unsigned int data_len = 0;
12985
12986         if (cb->args[0]) {
12987                 /* subtract the 1 again here */
12988                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12989                 struct wireless_dev *tmp;
12990
12991                 if (!wiphy)
12992                         return -ENODEV;
12993                 *rdev = wiphy_to_rdev(wiphy);
12994                 *wdev = NULL;
12995
12996                 if (cb->args[1]) {
12997                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12998                                 if (tmp->identifier == cb->args[1] - 1) {
12999                                         *wdev = tmp;
13000                                         break;
13001                                 }
13002                         }
13003                 }
13004
13005                 /* keep rtnl locked in successful case */
13006                 return 0;
13007         }
13008
13009         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13010         if (!attrbuf)
13011                 return -ENOMEM;
13012
13013         err = nlmsg_parse_deprecated(cb->nlh,
13014                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13015                                      attrbuf, nl80211_fam.maxattr,
13016                                      nl80211_policy, NULL);
13017         if (err)
13018                 goto out;
13019
13020         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13021             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13022                 err = -EINVAL;
13023                 goto out;
13024         }
13025
13026         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13027         if (IS_ERR(*wdev))
13028                 *wdev = NULL;
13029
13030         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13031         if (IS_ERR(*rdev)) {
13032                 err = PTR_ERR(*rdev);
13033                 goto out;
13034         }
13035
13036         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13037         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13038
13039         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13040                 const struct wiphy_vendor_command *vcmd;
13041
13042                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13043
13044                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13045                         continue;
13046
13047                 if (!vcmd->dumpit) {
13048                         err = -EOPNOTSUPP;
13049                         goto out;
13050                 }
13051
13052                 vcmd_idx = i;
13053                 break;
13054         }
13055
13056         if (vcmd_idx < 0) {
13057                 err = -EOPNOTSUPP;
13058                 goto out;
13059         }
13060
13061         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13062                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13063                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13064
13065                 err = nl80211_vendor_check_policy(
13066                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13067                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13068                                 cb->extack);
13069                 if (err)
13070                         goto out;
13071         }
13072
13073         /* 0 is the first index - add 1 to parse only once */
13074         cb->args[0] = (*rdev)->wiphy_idx + 1;
13075         /* add 1 to know if it was NULL */
13076         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13077         cb->args[2] = vcmd_idx;
13078         cb->args[3] = (unsigned long)data;
13079         cb->args[4] = data_len;
13080
13081         /* keep rtnl locked in successful case */
13082         err = 0;
13083 out:
13084         kfree(attrbuf);
13085         return err;
13086 }
13087
13088 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13089                                    struct netlink_callback *cb)
13090 {
13091         struct cfg80211_registered_device *rdev;
13092         struct wireless_dev *wdev;
13093         unsigned int vcmd_idx;
13094         const struct wiphy_vendor_command *vcmd;
13095         void *data;
13096         int data_len;
13097         int err;
13098         struct nlattr *vendor_data;
13099
13100         rtnl_lock();
13101         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13102         if (err)
13103                 goto out;
13104
13105         vcmd_idx = cb->args[2];
13106         data = (void *)cb->args[3];
13107         data_len = cb->args[4];
13108         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13109
13110         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13111                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13112                 if (!wdev) {
13113                         err = -EINVAL;
13114                         goto out;
13115                 }
13116                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13117                     !wdev->netdev) {
13118                         err = -EINVAL;
13119                         goto out;
13120                 }
13121
13122                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13123                         if (!wdev_running(wdev)) {
13124                                 err = -ENETDOWN;
13125                                 goto out;
13126                         }
13127                 }
13128         }
13129
13130         while (1) {
13131                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13132                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13133                                            NL80211_CMD_VENDOR);
13134                 if (!hdr)
13135                         break;
13136
13137                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13138                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13139                                                wdev_id(wdev),
13140                                                NL80211_ATTR_PAD))) {
13141                         genlmsg_cancel(skb, hdr);
13142                         break;
13143                 }
13144
13145                 vendor_data = nla_nest_start_noflag(skb,
13146                                                     NL80211_ATTR_VENDOR_DATA);
13147                 if (!vendor_data) {
13148                         genlmsg_cancel(skb, hdr);
13149                         break;
13150                 }
13151
13152                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13153                                    (unsigned long *)&cb->args[5]);
13154                 nla_nest_end(skb, vendor_data);
13155
13156                 if (err == -ENOBUFS || err == -ENOENT) {
13157                         genlmsg_cancel(skb, hdr);
13158                         break;
13159                 } else if (err) {
13160                         genlmsg_cancel(skb, hdr);
13161                         goto out;
13162                 }
13163
13164                 genlmsg_end(skb, hdr);
13165         }
13166
13167         err = skb->len;
13168  out:
13169         rtnl_unlock();
13170         return err;
13171 }
13172
13173 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13174                                            enum nl80211_commands cmd,
13175                                            enum nl80211_attrs attr,
13176                                            int approxlen)
13177 {
13178         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13179
13180         if (WARN_ON(!rdev->cur_cmd_info))
13181                 return NULL;
13182
13183         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13184                                            rdev->cur_cmd_info->snd_portid,
13185                                            rdev->cur_cmd_info->snd_seq,
13186                                            cmd, attr, NULL, GFP_KERNEL);
13187 }
13188 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13189
13190 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13191 {
13192         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13193         void *hdr = ((void **)skb->cb)[1];
13194         struct nlattr *data = ((void **)skb->cb)[2];
13195
13196         /* clear CB data for netlink core to own from now on */
13197         memset(skb->cb, 0, sizeof(skb->cb));
13198
13199         if (WARN_ON(!rdev->cur_cmd_info)) {
13200                 kfree_skb(skb);
13201                 return -EINVAL;
13202         }
13203
13204         nla_nest_end(skb, data);
13205         genlmsg_end(skb, hdr);
13206         return genlmsg_reply(skb, rdev->cur_cmd_info);
13207 }
13208 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13209
13210 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13211 {
13212         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13213
13214         if (WARN_ON(!rdev->cur_cmd_info))
13215                 return 0;
13216
13217         return rdev->cur_cmd_info->snd_portid;
13218 }
13219 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13220
13221 static int nl80211_set_qos_map(struct sk_buff *skb,
13222                                struct genl_info *info)
13223 {
13224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13225         struct cfg80211_qos_map *qos_map = NULL;
13226         struct net_device *dev = info->user_ptr[1];
13227         u8 *pos, len, num_des, des_len, des;
13228         int ret;
13229
13230         if (!rdev->ops->set_qos_map)
13231                 return -EOPNOTSUPP;
13232
13233         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13234                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13235                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13236
13237                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13238                     len > IEEE80211_QOS_MAP_LEN_MAX)
13239                         return -EINVAL;
13240
13241                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13242                 if (!qos_map)
13243                         return -ENOMEM;
13244
13245                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13246                 if (num_des) {
13247                         des_len = num_des *
13248                                 sizeof(struct cfg80211_dscp_exception);
13249                         memcpy(qos_map->dscp_exception, pos, des_len);
13250                         qos_map->num_des = num_des;
13251                         for (des = 0; des < num_des; des++) {
13252                                 if (qos_map->dscp_exception[des].up > 7) {
13253                                         kfree(qos_map);
13254                                         return -EINVAL;
13255                                 }
13256                         }
13257                         pos += des_len;
13258                 }
13259                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13260         }
13261
13262         wdev_lock(dev->ieee80211_ptr);
13263         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13264         if (!ret)
13265                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13266         wdev_unlock(dev->ieee80211_ptr);
13267
13268         kfree(qos_map);
13269         return ret;
13270 }
13271
13272 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13273 {
13274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13275         struct net_device *dev = info->user_ptr[1];
13276         struct wireless_dev *wdev = dev->ieee80211_ptr;
13277         const u8 *peer;
13278         u8 tsid, up;
13279         u16 admitted_time = 0;
13280         int err;
13281
13282         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13283                 return -EOPNOTSUPP;
13284
13285         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13286             !info->attrs[NL80211_ATTR_USER_PRIO])
13287                 return -EINVAL;
13288
13289         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13290         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13291
13292         /* WMM uses TIDs 0-7 even for TSPEC */
13293         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13294                 /* TODO: handle 802.11 TSPEC/admission control
13295                  * need more attributes for that (e.g. BA session requirement);
13296                  * change the WMM adminssion test above to allow both then
13297                  */
13298                 return -EINVAL;
13299         }
13300
13301         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13302
13303         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13304                 admitted_time =
13305                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13306                 if (!admitted_time)
13307                         return -EINVAL;
13308         }
13309
13310         wdev_lock(wdev);
13311         switch (wdev->iftype) {
13312         case NL80211_IFTYPE_STATION:
13313         case NL80211_IFTYPE_P2P_CLIENT:
13314                 if (wdev->current_bss)
13315                         break;
13316                 err = -ENOTCONN;
13317                 goto out;
13318         default:
13319                 err = -EOPNOTSUPP;
13320                 goto out;
13321         }
13322
13323         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13324
13325  out:
13326         wdev_unlock(wdev);
13327         return err;
13328 }
13329
13330 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13331 {
13332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13333         struct net_device *dev = info->user_ptr[1];
13334         struct wireless_dev *wdev = dev->ieee80211_ptr;
13335         const u8 *peer;
13336         u8 tsid;
13337         int err;
13338
13339         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13340                 return -EINVAL;
13341
13342         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13343         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13344
13345         wdev_lock(wdev);
13346         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13347         wdev_unlock(wdev);
13348
13349         return err;
13350 }
13351
13352 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13353                                        struct genl_info *info)
13354 {
13355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13356         struct net_device *dev = info->user_ptr[1];
13357         struct wireless_dev *wdev = dev->ieee80211_ptr;
13358         struct cfg80211_chan_def chandef = {};
13359         const u8 *addr;
13360         u8 oper_class;
13361         int err;
13362
13363         if (!rdev->ops->tdls_channel_switch ||
13364             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13365                 return -EOPNOTSUPP;
13366
13367         switch (dev->ieee80211_ptr->iftype) {
13368         case NL80211_IFTYPE_STATION:
13369         case NL80211_IFTYPE_P2P_CLIENT:
13370                 break;
13371         default:
13372                 return -EOPNOTSUPP;
13373         }
13374
13375         if (!info->attrs[NL80211_ATTR_MAC] ||
13376             !info->attrs[NL80211_ATTR_OPER_CLASS])
13377                 return -EINVAL;
13378
13379         err = nl80211_parse_chandef(rdev, info, &chandef);
13380         if (err)
13381                 return err;
13382
13383         /*
13384          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13385          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13386          * specification is not defined for them.
13387          */
13388         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13389             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13390             chandef.width != NL80211_CHAN_WIDTH_20)
13391                 return -EINVAL;
13392
13393         /* we will be active on the TDLS link */
13394         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13395                                            wdev->iftype))
13396                 return -EINVAL;
13397
13398         /* don't allow switching to DFS channels */
13399         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13400                 return -EINVAL;
13401
13402         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13403         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13404
13405         wdev_lock(wdev);
13406         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13407         wdev_unlock(wdev);
13408
13409         return err;
13410 }
13411
13412 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13413                                               struct genl_info *info)
13414 {
13415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13416         struct net_device *dev = info->user_ptr[1];
13417         struct wireless_dev *wdev = dev->ieee80211_ptr;
13418         const u8 *addr;
13419
13420         if (!rdev->ops->tdls_channel_switch ||
13421             !rdev->ops->tdls_cancel_channel_switch ||
13422             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13423                 return -EOPNOTSUPP;
13424
13425         switch (dev->ieee80211_ptr->iftype) {
13426         case NL80211_IFTYPE_STATION:
13427         case NL80211_IFTYPE_P2P_CLIENT:
13428                 break;
13429         default:
13430                 return -EOPNOTSUPP;
13431         }
13432
13433         if (!info->attrs[NL80211_ATTR_MAC])
13434                 return -EINVAL;
13435
13436         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13437
13438         wdev_lock(wdev);
13439         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13440         wdev_unlock(wdev);
13441
13442         return 0;
13443 }
13444
13445 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13446                                             struct genl_info *info)
13447 {
13448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13449         struct net_device *dev = info->user_ptr[1];
13450         struct wireless_dev *wdev = dev->ieee80211_ptr;
13451         const struct nlattr *nla;
13452         bool enabled;
13453
13454         if (!rdev->ops->set_multicast_to_unicast)
13455                 return -EOPNOTSUPP;
13456
13457         if (wdev->iftype != NL80211_IFTYPE_AP &&
13458             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13459                 return -EOPNOTSUPP;
13460
13461         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13462         enabled = nla_get_flag(nla);
13463
13464         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13465 }
13466
13467 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13468 {
13469         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13470         struct net_device *dev = info->user_ptr[1];
13471         struct wireless_dev *wdev = dev->ieee80211_ptr;
13472         struct cfg80211_pmk_conf pmk_conf = {};
13473         int ret;
13474
13475         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13476             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13477                 return -EOPNOTSUPP;
13478
13479         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13480                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13481                 return -EOPNOTSUPP;
13482
13483         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13484                 return -EINVAL;
13485
13486         wdev_lock(wdev);
13487         if (!wdev->current_bss) {
13488                 ret = -ENOTCONN;
13489                 goto out;
13490         }
13491
13492         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13493         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13494                 ret = -EINVAL;
13495                 goto out;
13496         }
13497
13498         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13499         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13500         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13501             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13502                 ret = -EINVAL;
13503                 goto out;
13504         }
13505
13506         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13507                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13508
13509                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13510                         ret = -EINVAL;
13511                         goto out;
13512                 }
13513
13514                 pmk_conf.pmk_r0_name =
13515                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13516         }
13517
13518         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13519 out:
13520         wdev_unlock(wdev);
13521         return ret;
13522 }
13523
13524 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13525 {
13526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13527         struct net_device *dev = info->user_ptr[1];
13528         struct wireless_dev *wdev = dev->ieee80211_ptr;
13529         const u8 *aa;
13530         int ret;
13531
13532         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13533             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13534                 return -EOPNOTSUPP;
13535
13536         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13537                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13538                 return -EOPNOTSUPP;
13539
13540         if (!info->attrs[NL80211_ATTR_MAC])
13541                 return -EINVAL;
13542
13543         wdev_lock(wdev);
13544         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13545         ret = rdev_del_pmk(rdev, dev, aa);
13546         wdev_unlock(wdev);
13547
13548         return ret;
13549 }
13550
13551 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13552 {
13553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13554         struct net_device *dev = info->user_ptr[1];
13555         struct cfg80211_external_auth_params params;
13556
13557         if (!rdev->ops->external_auth)
13558                 return -EOPNOTSUPP;
13559
13560         if (!info->attrs[NL80211_ATTR_SSID] &&
13561             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13562             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13563                 return -EINVAL;
13564
13565         if (!info->attrs[NL80211_ATTR_BSSID])
13566                 return -EINVAL;
13567
13568         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13569                 return -EINVAL;
13570
13571         memset(&params, 0, sizeof(params));
13572
13573         if (info->attrs[NL80211_ATTR_SSID]) {
13574                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13575                 if (params.ssid.ssid_len == 0 ||
13576                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13577                         return -EINVAL;
13578                 memcpy(params.ssid.ssid,
13579                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13580                        params.ssid.ssid_len);
13581         }
13582
13583         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13584                ETH_ALEN);
13585
13586         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13587
13588         if (info->attrs[NL80211_ATTR_PMKID])
13589                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13590
13591         return rdev_external_auth(rdev, dev, &params);
13592 }
13593
13594 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13595 {
13596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13597         struct net_device *dev = info->user_ptr[1];
13598         struct wireless_dev *wdev = dev->ieee80211_ptr;
13599         const u8 *buf;
13600         size_t len;
13601         u8 *dest;
13602         u16 proto;
13603         bool noencrypt;
13604         int err;
13605
13606         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13607                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13608                 return -EOPNOTSUPP;
13609
13610         if (!rdev->ops->tx_control_port)
13611                 return -EOPNOTSUPP;
13612
13613         if (!info->attrs[NL80211_ATTR_FRAME] ||
13614             !info->attrs[NL80211_ATTR_MAC] ||
13615             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13616                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13617                 return -EINVAL;
13618         }
13619
13620         wdev_lock(wdev);
13621
13622         switch (wdev->iftype) {
13623         case NL80211_IFTYPE_AP:
13624         case NL80211_IFTYPE_P2P_GO:
13625         case NL80211_IFTYPE_MESH_POINT:
13626                 break;
13627         case NL80211_IFTYPE_ADHOC:
13628         case NL80211_IFTYPE_STATION:
13629         case NL80211_IFTYPE_P2P_CLIENT:
13630                 if (wdev->current_bss)
13631                         break;
13632                 err = -ENOTCONN;
13633                 goto out;
13634         default:
13635                 err = -EOPNOTSUPP;
13636                 goto out;
13637         }
13638
13639         wdev_unlock(wdev);
13640
13641         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13642         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13643         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13644         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13645         noencrypt =
13646                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13647
13648         return rdev_tx_control_port(rdev, dev, buf, len,
13649                                     dest, cpu_to_be16(proto), noencrypt);
13650
13651  out:
13652         wdev_unlock(wdev);
13653         return err;
13654 }
13655
13656 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13657                                            struct genl_info *info)
13658 {
13659         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13660         struct net_device *dev = info->user_ptr[1];
13661         struct wireless_dev *wdev = dev->ieee80211_ptr;
13662         struct cfg80211_ftm_responder_stats ftm_stats = {};
13663         struct sk_buff *msg;
13664         void *hdr;
13665         struct nlattr *ftm_stats_attr;
13666         int err;
13667
13668         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13669                 return -EOPNOTSUPP;
13670
13671         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13672         if (err)
13673                 return err;
13674
13675         if (!ftm_stats.filled)
13676                 return -ENODATA;
13677
13678         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13679         if (!msg)
13680                 return -ENOMEM;
13681
13682         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13683                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13684         if (!hdr)
13685                 return -ENOBUFS;
13686
13687         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13688                 goto nla_put_failure;
13689
13690         ftm_stats_attr = nla_nest_start_noflag(msg,
13691                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13692         if (!ftm_stats_attr)
13693                 goto nla_put_failure;
13694
13695 #define SET_FTM(field, name, type)                                       \
13696         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13697             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13698                              ftm_stats.field))                           \
13699                 goto nla_put_failure; } while (0)
13700 #define SET_FTM_U64(field, name)                                         \
13701         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13702             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13703                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13704                 goto nla_put_failure; } while (0)
13705
13706         SET_FTM(success_num, SUCCESS_NUM, u32);
13707         SET_FTM(partial_num, PARTIAL_NUM, u32);
13708         SET_FTM(failed_num, FAILED_NUM, u32);
13709         SET_FTM(asap_num, ASAP_NUM, u32);
13710         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13711         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13712         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13713         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13714         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13715 #undef SET_FTM
13716
13717         nla_nest_end(msg, ftm_stats_attr);
13718
13719         genlmsg_end(msg, hdr);
13720         return genlmsg_reply(msg, info);
13721
13722 nla_put_failure:
13723         nlmsg_free(msg);
13724         return -ENOBUFS;
13725 }
13726
13727 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13728 {
13729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13730         struct cfg80211_update_owe_info owe_info;
13731         struct net_device *dev = info->user_ptr[1];
13732
13733         if (!rdev->ops->update_owe_info)
13734                 return -EOPNOTSUPP;
13735
13736         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13737             !info->attrs[NL80211_ATTR_MAC])
13738                 return -EINVAL;
13739
13740         memset(&owe_info, 0, sizeof(owe_info));
13741         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13742         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13743
13744         if (info->attrs[NL80211_ATTR_IE]) {
13745                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13746                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13747         }
13748
13749         return rdev_update_owe_info(rdev, dev, &owe_info);
13750 }
13751
13752 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13753 {
13754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13755         struct net_device *dev = info->user_ptr[1];
13756         struct wireless_dev *wdev = dev->ieee80211_ptr;
13757         struct station_info sinfo = {};
13758         const u8 *buf;
13759         size_t len;
13760         u8 *dest;
13761         int err;
13762
13763         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13764                 return -EOPNOTSUPP;
13765
13766         if (!info->attrs[NL80211_ATTR_MAC] ||
13767             !info->attrs[NL80211_ATTR_FRAME]) {
13768                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13769                 return -EINVAL;
13770         }
13771
13772         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13773                 return -EOPNOTSUPP;
13774
13775         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13776         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13777         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13778
13779         if (len < sizeof(struct ethhdr))
13780                 return -EINVAL;
13781
13782         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13783             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13784                 return -EINVAL;
13785
13786         err = rdev_get_station(rdev, dev, dest, &sinfo);
13787         if (err)
13788                 return err;
13789
13790         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13791 }
13792
13793 #define NL80211_FLAG_NEED_WIPHY         0x01
13794 #define NL80211_FLAG_NEED_NETDEV        0x02
13795 #define NL80211_FLAG_NEED_RTNL          0x04
13796 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13797 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13798                                          NL80211_FLAG_CHECK_NETDEV_UP)
13799 #define NL80211_FLAG_NEED_WDEV          0x10
13800 /* If a netdev is associated, it must be UP, P2P must be started */
13801 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13802                                          NL80211_FLAG_CHECK_NETDEV_UP)
13803 #define NL80211_FLAG_CLEAR_SKB          0x20
13804
13805 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13806                             struct genl_info *info)
13807 {
13808         struct cfg80211_registered_device *rdev;
13809         struct wireless_dev *wdev;
13810         struct net_device *dev;
13811         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13812
13813         if (rtnl)
13814                 rtnl_lock();
13815
13816         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13817                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13818                 if (IS_ERR(rdev)) {
13819                         if (rtnl)
13820                                 rtnl_unlock();
13821                         return PTR_ERR(rdev);
13822                 }
13823                 info->user_ptr[0] = rdev;
13824         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13825                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13826                 ASSERT_RTNL();
13827
13828                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13829                                                   info->attrs);
13830                 if (IS_ERR(wdev)) {
13831                         if (rtnl)
13832                                 rtnl_unlock();
13833                         return PTR_ERR(wdev);
13834                 }
13835
13836                 dev = wdev->netdev;
13837                 rdev = wiphy_to_rdev(wdev->wiphy);
13838
13839                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13840                         if (!dev) {
13841                                 if (rtnl)
13842                                         rtnl_unlock();
13843                                 return -EINVAL;
13844                         }
13845
13846                         info->user_ptr[1] = dev;
13847                 } else {
13848                         info->user_ptr[1] = wdev;
13849                 }
13850
13851                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13852                     !wdev_running(wdev)) {
13853                         if (rtnl)
13854                                 rtnl_unlock();
13855                         return -ENETDOWN;
13856                 }
13857
13858                 if (dev)
13859                         dev_hold(dev);
13860
13861                 info->user_ptr[0] = rdev;
13862         }
13863
13864         return 0;
13865 }
13866
13867 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13868                               struct genl_info *info)
13869 {
13870         if (info->user_ptr[1]) {
13871                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13872                         struct wireless_dev *wdev = info->user_ptr[1];
13873
13874                         if (wdev->netdev)
13875                                 dev_put(wdev->netdev);
13876                 } else {
13877                         dev_put(info->user_ptr[1]);
13878                 }
13879         }
13880
13881         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13882                 rtnl_unlock();
13883
13884         /* If needed, clear the netlink message payload from the SKB
13885          * as it might contain key data that shouldn't stick around on
13886          * the heap after the SKB is freed. The netlink message header
13887          * is still needed for further processing, so leave it intact.
13888          */
13889         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13890                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13891
13892                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13893         }
13894 }
13895
13896 static const struct genl_ops nl80211_ops[] = {
13897         {
13898                 .cmd = NL80211_CMD_GET_WIPHY,
13899                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13900                 .doit = nl80211_get_wiphy,
13901                 .dumpit = nl80211_dump_wiphy,
13902                 .done = nl80211_dump_wiphy_done,
13903                 /* can be retrieved by unprivileged users */
13904                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13905                                   NL80211_FLAG_NEED_RTNL,
13906         },
13907         {
13908                 .cmd = NL80211_CMD_SET_WIPHY,
13909                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13910                 .doit = nl80211_set_wiphy,
13911                 .flags = GENL_UNS_ADMIN_PERM,
13912                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13913         },
13914         {
13915                 .cmd = NL80211_CMD_GET_INTERFACE,
13916                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13917                 .doit = nl80211_get_interface,
13918                 .dumpit = nl80211_dump_interface,
13919                 /* can be retrieved by unprivileged users */
13920                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13921                                   NL80211_FLAG_NEED_RTNL,
13922         },
13923         {
13924                 .cmd = NL80211_CMD_SET_INTERFACE,
13925                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13926                 .doit = nl80211_set_interface,
13927                 .flags = GENL_UNS_ADMIN_PERM,
13928                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13929                                   NL80211_FLAG_NEED_RTNL,
13930         },
13931         {
13932                 .cmd = NL80211_CMD_NEW_INTERFACE,
13933                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13934                 .doit = nl80211_new_interface,
13935                 .flags = GENL_UNS_ADMIN_PERM,
13936                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13937                                   NL80211_FLAG_NEED_RTNL,
13938         },
13939         {
13940                 .cmd = NL80211_CMD_DEL_INTERFACE,
13941                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13942                 .doit = nl80211_del_interface,
13943                 .flags = GENL_UNS_ADMIN_PERM,
13944                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13945                                   NL80211_FLAG_NEED_RTNL,
13946         },
13947         {
13948                 .cmd = NL80211_CMD_GET_KEY,
13949                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13950                 .doit = nl80211_get_key,
13951                 .flags = GENL_UNS_ADMIN_PERM,
13952                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13953                                   NL80211_FLAG_NEED_RTNL,
13954         },
13955         {
13956                 .cmd = NL80211_CMD_SET_KEY,
13957                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13958                 .doit = nl80211_set_key,
13959                 .flags = GENL_UNS_ADMIN_PERM,
13960                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13961                                   NL80211_FLAG_NEED_RTNL |
13962                                   NL80211_FLAG_CLEAR_SKB,
13963         },
13964         {
13965                 .cmd = NL80211_CMD_NEW_KEY,
13966                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13967                 .doit = nl80211_new_key,
13968                 .flags = GENL_UNS_ADMIN_PERM,
13969                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13970                                   NL80211_FLAG_NEED_RTNL |
13971                                   NL80211_FLAG_CLEAR_SKB,
13972         },
13973         {
13974                 .cmd = NL80211_CMD_DEL_KEY,
13975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13976                 .doit = nl80211_del_key,
13977                 .flags = GENL_UNS_ADMIN_PERM,
13978                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13979                                   NL80211_FLAG_NEED_RTNL,
13980         },
13981         {
13982                 .cmd = NL80211_CMD_SET_BEACON,
13983                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13984                 .flags = GENL_UNS_ADMIN_PERM,
13985                 .doit = nl80211_set_beacon,
13986                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13987                                   NL80211_FLAG_NEED_RTNL,
13988         },
13989         {
13990                 .cmd = NL80211_CMD_START_AP,
13991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13992                 .flags = GENL_UNS_ADMIN_PERM,
13993                 .doit = nl80211_start_ap,
13994                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13995                                   NL80211_FLAG_NEED_RTNL,
13996         },
13997         {
13998                 .cmd = NL80211_CMD_STOP_AP,
13999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14000                 .flags = GENL_UNS_ADMIN_PERM,
14001                 .doit = nl80211_stop_ap,
14002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14003                                   NL80211_FLAG_NEED_RTNL,
14004         },
14005         {
14006                 .cmd = NL80211_CMD_GET_STATION,
14007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14008                 .doit = nl80211_get_station,
14009                 .dumpit = nl80211_dump_station,
14010                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14011                                   NL80211_FLAG_NEED_RTNL,
14012         },
14013         {
14014                 .cmd = NL80211_CMD_SET_STATION,
14015                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14016                 .doit = nl80211_set_station,
14017                 .flags = GENL_UNS_ADMIN_PERM,
14018                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14019                                   NL80211_FLAG_NEED_RTNL,
14020         },
14021         {
14022                 .cmd = NL80211_CMD_NEW_STATION,
14023                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14024                 .doit = nl80211_new_station,
14025                 .flags = GENL_UNS_ADMIN_PERM,
14026                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14027                                   NL80211_FLAG_NEED_RTNL,
14028         },
14029         {
14030                 .cmd = NL80211_CMD_DEL_STATION,
14031                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14032                 .doit = nl80211_del_station,
14033                 .flags = GENL_UNS_ADMIN_PERM,
14034                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14035                                   NL80211_FLAG_NEED_RTNL,
14036         },
14037         {
14038                 .cmd = NL80211_CMD_GET_MPATH,
14039                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14040                 .doit = nl80211_get_mpath,
14041                 .dumpit = nl80211_dump_mpath,
14042                 .flags = GENL_UNS_ADMIN_PERM,
14043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14044                                   NL80211_FLAG_NEED_RTNL,
14045         },
14046         {
14047                 .cmd = NL80211_CMD_GET_MPP,
14048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14049                 .doit = nl80211_get_mpp,
14050                 .dumpit = nl80211_dump_mpp,
14051                 .flags = GENL_UNS_ADMIN_PERM,
14052                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14053                                   NL80211_FLAG_NEED_RTNL,
14054         },
14055         {
14056                 .cmd = NL80211_CMD_SET_MPATH,
14057                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14058                 .doit = nl80211_set_mpath,
14059                 .flags = GENL_UNS_ADMIN_PERM,
14060                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14061                                   NL80211_FLAG_NEED_RTNL,
14062         },
14063         {
14064                 .cmd = NL80211_CMD_NEW_MPATH,
14065                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14066                 .doit = nl80211_new_mpath,
14067                 .flags = GENL_UNS_ADMIN_PERM,
14068                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14069                                   NL80211_FLAG_NEED_RTNL,
14070         },
14071         {
14072                 .cmd = NL80211_CMD_DEL_MPATH,
14073                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14074                 .doit = nl80211_del_mpath,
14075                 .flags = GENL_UNS_ADMIN_PERM,
14076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14077                                   NL80211_FLAG_NEED_RTNL,
14078         },
14079         {
14080                 .cmd = NL80211_CMD_SET_BSS,
14081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14082                 .doit = nl80211_set_bss,
14083                 .flags = GENL_UNS_ADMIN_PERM,
14084                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14085                                   NL80211_FLAG_NEED_RTNL,
14086         },
14087         {
14088                 .cmd = NL80211_CMD_GET_REG,
14089                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14090                 .doit = nl80211_get_reg_do,
14091                 .dumpit = nl80211_get_reg_dump,
14092                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14093                 /* can be retrieved by unprivileged users */
14094         },
14095 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14096         {
14097                 .cmd = NL80211_CMD_SET_REG,
14098                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14099                 .doit = nl80211_set_reg,
14100                 .flags = GENL_ADMIN_PERM,
14101                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14102         },
14103 #endif
14104         {
14105                 .cmd = NL80211_CMD_REQ_SET_REG,
14106                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14107                 .doit = nl80211_req_set_reg,
14108                 .flags = GENL_ADMIN_PERM,
14109         },
14110         {
14111                 .cmd = NL80211_CMD_RELOAD_REGDB,
14112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14113                 .doit = nl80211_reload_regdb,
14114                 .flags = GENL_ADMIN_PERM,
14115         },
14116         {
14117                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14118                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14119                 .doit = nl80211_get_mesh_config,
14120                 /* can be retrieved by unprivileged users */
14121                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14122                                   NL80211_FLAG_NEED_RTNL,
14123         },
14124         {
14125                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14126                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14127                 .doit = nl80211_update_mesh_config,
14128                 .flags = GENL_UNS_ADMIN_PERM,
14129                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14130                                   NL80211_FLAG_NEED_RTNL,
14131         },
14132         {
14133                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14134                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14135                 .doit = nl80211_trigger_scan,
14136                 .flags = GENL_UNS_ADMIN_PERM,
14137                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14138                                   NL80211_FLAG_NEED_RTNL,
14139         },
14140         {
14141                 .cmd = NL80211_CMD_ABORT_SCAN,
14142                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14143                 .doit = nl80211_abort_scan,
14144                 .flags = GENL_UNS_ADMIN_PERM,
14145                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14146                                   NL80211_FLAG_NEED_RTNL,
14147         },
14148         {
14149                 .cmd = NL80211_CMD_GET_SCAN,
14150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14151                 .dumpit = nl80211_dump_scan,
14152         },
14153         {
14154                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14155                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14156                 .doit = nl80211_start_sched_scan,
14157                 .flags = GENL_UNS_ADMIN_PERM,
14158                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14159                                   NL80211_FLAG_NEED_RTNL,
14160         },
14161         {
14162                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14163                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14164                 .doit = nl80211_stop_sched_scan,
14165                 .flags = GENL_UNS_ADMIN_PERM,
14166                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14167                                   NL80211_FLAG_NEED_RTNL,
14168         },
14169         {
14170                 .cmd = NL80211_CMD_AUTHENTICATE,
14171                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14172                 .doit = nl80211_authenticate,
14173                 .flags = GENL_UNS_ADMIN_PERM,
14174                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14175                                   NL80211_FLAG_NEED_RTNL |
14176                                   NL80211_FLAG_CLEAR_SKB,
14177         },
14178         {
14179                 .cmd = NL80211_CMD_ASSOCIATE,
14180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14181                 .doit = nl80211_associate,
14182                 .flags = GENL_UNS_ADMIN_PERM,
14183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14184                                   NL80211_FLAG_NEED_RTNL |
14185                                   NL80211_FLAG_CLEAR_SKB,
14186         },
14187         {
14188                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14190                 .doit = nl80211_deauthenticate,
14191                 .flags = GENL_UNS_ADMIN_PERM,
14192                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14193                                   NL80211_FLAG_NEED_RTNL,
14194         },
14195         {
14196                 .cmd = NL80211_CMD_DISASSOCIATE,
14197                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14198                 .doit = nl80211_disassociate,
14199                 .flags = GENL_UNS_ADMIN_PERM,
14200                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14201                                   NL80211_FLAG_NEED_RTNL,
14202         },
14203         {
14204                 .cmd = NL80211_CMD_JOIN_IBSS,
14205                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14206                 .doit = nl80211_join_ibss,
14207                 .flags = GENL_UNS_ADMIN_PERM,
14208                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14209                                   NL80211_FLAG_NEED_RTNL,
14210         },
14211         {
14212                 .cmd = NL80211_CMD_LEAVE_IBSS,
14213                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14214                 .doit = nl80211_leave_ibss,
14215                 .flags = GENL_UNS_ADMIN_PERM,
14216                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14217                                   NL80211_FLAG_NEED_RTNL,
14218         },
14219 #ifdef CONFIG_NL80211_TESTMODE
14220         {
14221                 .cmd = NL80211_CMD_TESTMODE,
14222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14223                 .doit = nl80211_testmode_do,
14224                 .dumpit = nl80211_testmode_dump,
14225                 .flags = GENL_UNS_ADMIN_PERM,
14226                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14227                                   NL80211_FLAG_NEED_RTNL,
14228         },
14229 #endif
14230         {
14231                 .cmd = NL80211_CMD_CONNECT,
14232                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14233                 .doit = nl80211_connect,
14234                 .flags = GENL_UNS_ADMIN_PERM,
14235                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14236                                   NL80211_FLAG_NEED_RTNL |
14237                                   NL80211_FLAG_CLEAR_SKB,
14238         },
14239         {
14240                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14241                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14242                 .doit = nl80211_update_connect_params,
14243                 .flags = GENL_ADMIN_PERM,
14244                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14245                                   NL80211_FLAG_NEED_RTNL |
14246                                   NL80211_FLAG_CLEAR_SKB,
14247         },
14248         {
14249                 .cmd = NL80211_CMD_DISCONNECT,
14250                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14251                 .doit = nl80211_disconnect,
14252                 .flags = GENL_UNS_ADMIN_PERM,
14253                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14254                                   NL80211_FLAG_NEED_RTNL,
14255         },
14256         {
14257                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14258                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14259                 .doit = nl80211_wiphy_netns,
14260                 .flags = GENL_UNS_ADMIN_PERM,
14261                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14262                                   NL80211_FLAG_NEED_RTNL,
14263         },
14264         {
14265                 .cmd = NL80211_CMD_GET_SURVEY,
14266                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14267                 .dumpit = nl80211_dump_survey,
14268         },
14269         {
14270                 .cmd = NL80211_CMD_SET_PMKSA,
14271                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14272                 .doit = nl80211_setdel_pmksa,
14273                 .flags = GENL_UNS_ADMIN_PERM,
14274                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14275                                   NL80211_FLAG_NEED_RTNL |
14276                                   NL80211_FLAG_CLEAR_SKB,
14277         },
14278         {
14279                 .cmd = NL80211_CMD_DEL_PMKSA,
14280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14281                 .doit = nl80211_setdel_pmksa,
14282                 .flags = GENL_UNS_ADMIN_PERM,
14283                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14284                                   NL80211_FLAG_NEED_RTNL,
14285         },
14286         {
14287                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14288                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14289                 .doit = nl80211_flush_pmksa,
14290                 .flags = GENL_UNS_ADMIN_PERM,
14291                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14292                                   NL80211_FLAG_NEED_RTNL,
14293         },
14294         {
14295                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14296                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14297                 .doit = nl80211_remain_on_channel,
14298                 .flags = GENL_UNS_ADMIN_PERM,
14299                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14300                                   NL80211_FLAG_NEED_RTNL,
14301         },
14302         {
14303                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14304                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14305                 .doit = nl80211_cancel_remain_on_channel,
14306                 .flags = GENL_UNS_ADMIN_PERM,
14307                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14308                                   NL80211_FLAG_NEED_RTNL,
14309         },
14310         {
14311                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14312                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14313                 .doit = nl80211_set_tx_bitrate_mask,
14314                 .flags = GENL_UNS_ADMIN_PERM,
14315                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14316                                   NL80211_FLAG_NEED_RTNL,
14317         },
14318         {
14319                 .cmd = NL80211_CMD_REGISTER_FRAME,
14320                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14321                 .doit = nl80211_register_mgmt,
14322                 .flags = GENL_UNS_ADMIN_PERM,
14323                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14324                                   NL80211_FLAG_NEED_RTNL,
14325         },
14326         {
14327                 .cmd = NL80211_CMD_FRAME,
14328                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14329                 .doit = nl80211_tx_mgmt,
14330                 .flags = GENL_UNS_ADMIN_PERM,
14331                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14332                                   NL80211_FLAG_NEED_RTNL,
14333         },
14334         {
14335                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14336                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14337                 .doit = nl80211_tx_mgmt_cancel_wait,
14338                 .flags = GENL_UNS_ADMIN_PERM,
14339                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14340                                   NL80211_FLAG_NEED_RTNL,
14341         },
14342         {
14343                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14344                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14345                 .doit = nl80211_set_power_save,
14346                 .flags = GENL_UNS_ADMIN_PERM,
14347                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14348                                   NL80211_FLAG_NEED_RTNL,
14349         },
14350         {
14351                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14352                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14353                 .doit = nl80211_get_power_save,
14354                 /* can be retrieved by unprivileged users */
14355                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14356                                   NL80211_FLAG_NEED_RTNL,
14357         },
14358         {
14359                 .cmd = NL80211_CMD_SET_CQM,
14360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14361                 .doit = nl80211_set_cqm,
14362                 .flags = GENL_UNS_ADMIN_PERM,
14363                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14364                                   NL80211_FLAG_NEED_RTNL,
14365         },
14366         {
14367                 .cmd = NL80211_CMD_SET_CHANNEL,
14368                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14369                 .doit = nl80211_set_channel,
14370                 .flags = GENL_UNS_ADMIN_PERM,
14371                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14372                                   NL80211_FLAG_NEED_RTNL,
14373         },
14374         {
14375                 .cmd = NL80211_CMD_SET_WDS_PEER,
14376                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14377                 .doit = nl80211_set_wds_peer,
14378                 .flags = GENL_UNS_ADMIN_PERM,
14379                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14380                                   NL80211_FLAG_NEED_RTNL,
14381         },
14382         {
14383                 .cmd = NL80211_CMD_JOIN_MESH,
14384                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14385                 .doit = nl80211_join_mesh,
14386                 .flags = GENL_UNS_ADMIN_PERM,
14387                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14388                                   NL80211_FLAG_NEED_RTNL,
14389         },
14390         {
14391                 .cmd = NL80211_CMD_LEAVE_MESH,
14392                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14393                 .doit = nl80211_leave_mesh,
14394                 .flags = GENL_UNS_ADMIN_PERM,
14395                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14396                                   NL80211_FLAG_NEED_RTNL,
14397         },
14398         {
14399                 .cmd = NL80211_CMD_JOIN_OCB,
14400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14401                 .doit = nl80211_join_ocb,
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_LEAVE_OCB,
14408                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14409                 .doit = nl80211_leave_ocb,
14410                 .flags = GENL_UNS_ADMIN_PERM,
14411                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14412                                   NL80211_FLAG_NEED_RTNL,
14413         },
14414 #ifdef CONFIG_PM
14415         {
14416                 .cmd = NL80211_CMD_GET_WOWLAN,
14417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14418                 .doit = nl80211_get_wowlan,
14419                 /* can be retrieved by unprivileged users */
14420                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14421                                   NL80211_FLAG_NEED_RTNL,
14422         },
14423         {
14424                 .cmd = NL80211_CMD_SET_WOWLAN,
14425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14426                 .doit = nl80211_set_wowlan,
14427                 .flags = GENL_UNS_ADMIN_PERM,
14428                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14429                                   NL80211_FLAG_NEED_RTNL,
14430         },
14431 #endif
14432         {
14433                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14435                 .doit = nl80211_set_rekey_data,
14436                 .flags = GENL_UNS_ADMIN_PERM,
14437                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14438                                   NL80211_FLAG_NEED_RTNL |
14439                                   NL80211_FLAG_CLEAR_SKB,
14440         },
14441         {
14442                 .cmd = NL80211_CMD_TDLS_MGMT,
14443                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14444                 .doit = nl80211_tdls_mgmt,
14445                 .flags = GENL_UNS_ADMIN_PERM,
14446                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14447                                   NL80211_FLAG_NEED_RTNL,
14448         },
14449         {
14450                 .cmd = NL80211_CMD_TDLS_OPER,
14451                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14452                 .doit = nl80211_tdls_oper,
14453                 .flags = GENL_UNS_ADMIN_PERM,
14454                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14455                                   NL80211_FLAG_NEED_RTNL,
14456         },
14457         {
14458                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14459                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14460                 .doit = nl80211_register_unexpected_frame,
14461                 .flags = GENL_UNS_ADMIN_PERM,
14462                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14463                                   NL80211_FLAG_NEED_RTNL,
14464         },
14465         {
14466                 .cmd = NL80211_CMD_PROBE_CLIENT,
14467                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14468                 .doit = nl80211_probe_client,
14469                 .flags = GENL_UNS_ADMIN_PERM,
14470                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14471                                   NL80211_FLAG_NEED_RTNL,
14472         },
14473         {
14474                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14475                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14476                 .doit = nl80211_register_beacons,
14477                 .flags = GENL_UNS_ADMIN_PERM,
14478                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14479                                   NL80211_FLAG_NEED_RTNL,
14480         },
14481         {
14482                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14483                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14484                 .doit = nl80211_set_noack_map,
14485                 .flags = GENL_UNS_ADMIN_PERM,
14486                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14487                                   NL80211_FLAG_NEED_RTNL,
14488         },
14489         {
14490                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14492                 .doit = nl80211_start_p2p_device,
14493                 .flags = GENL_UNS_ADMIN_PERM,
14494                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14495                                   NL80211_FLAG_NEED_RTNL,
14496         },
14497         {
14498                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14499                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14500                 .doit = nl80211_stop_p2p_device,
14501                 .flags = GENL_UNS_ADMIN_PERM,
14502                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14503                                   NL80211_FLAG_NEED_RTNL,
14504         },
14505         {
14506                 .cmd = NL80211_CMD_START_NAN,
14507                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14508                 .doit = nl80211_start_nan,
14509                 .flags = GENL_ADMIN_PERM,
14510                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14511                                   NL80211_FLAG_NEED_RTNL,
14512         },
14513         {
14514                 .cmd = NL80211_CMD_STOP_NAN,
14515                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14516                 .doit = nl80211_stop_nan,
14517                 .flags = GENL_ADMIN_PERM,
14518                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14519                                   NL80211_FLAG_NEED_RTNL,
14520         },
14521         {
14522                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14523                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14524                 .doit = nl80211_nan_add_func,
14525                 .flags = GENL_ADMIN_PERM,
14526                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14527                                   NL80211_FLAG_NEED_RTNL,
14528         },
14529         {
14530                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14531                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14532                 .doit = nl80211_nan_del_func,
14533                 .flags = GENL_ADMIN_PERM,
14534                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14535                                   NL80211_FLAG_NEED_RTNL,
14536         },
14537         {
14538                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14539                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14540                 .doit = nl80211_nan_change_config,
14541                 .flags = GENL_ADMIN_PERM,
14542                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14543                                   NL80211_FLAG_NEED_RTNL,
14544         },
14545         {
14546                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14547                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14548                 .doit = nl80211_set_mcast_rate,
14549                 .flags = GENL_UNS_ADMIN_PERM,
14550                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14551                                   NL80211_FLAG_NEED_RTNL,
14552         },
14553         {
14554                 .cmd = NL80211_CMD_SET_MAC_ACL,
14555                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14556                 .doit = nl80211_set_mac_acl,
14557                 .flags = GENL_UNS_ADMIN_PERM,
14558                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14559                                   NL80211_FLAG_NEED_RTNL,
14560         },
14561         {
14562                 .cmd = NL80211_CMD_RADAR_DETECT,
14563                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14564                 .doit = nl80211_start_radar_detection,
14565                 .flags = GENL_UNS_ADMIN_PERM,
14566                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14567                                   NL80211_FLAG_NEED_RTNL,
14568         },
14569         {
14570                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14571                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14572                 .doit = nl80211_get_protocol_features,
14573         },
14574         {
14575                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14576                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14577                 .doit = nl80211_update_ft_ies,
14578                 .flags = GENL_UNS_ADMIN_PERM,
14579                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14580                                   NL80211_FLAG_NEED_RTNL,
14581         },
14582         {
14583                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14584                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14585                 .doit = nl80211_crit_protocol_start,
14586                 .flags = GENL_UNS_ADMIN_PERM,
14587                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14588                                   NL80211_FLAG_NEED_RTNL,
14589         },
14590         {
14591                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14592                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14593                 .doit = nl80211_crit_protocol_stop,
14594                 .flags = GENL_UNS_ADMIN_PERM,
14595                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14596                                   NL80211_FLAG_NEED_RTNL,
14597         },
14598         {
14599                 .cmd = NL80211_CMD_GET_COALESCE,
14600                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14601                 .doit = nl80211_get_coalesce,
14602                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14603                                   NL80211_FLAG_NEED_RTNL,
14604         },
14605         {
14606                 .cmd = NL80211_CMD_SET_COALESCE,
14607                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14608                 .doit = nl80211_set_coalesce,
14609                 .flags = GENL_UNS_ADMIN_PERM,
14610                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14611                                   NL80211_FLAG_NEED_RTNL,
14612         },
14613         {
14614                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14615                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14616                 .doit = nl80211_channel_switch,
14617                 .flags = GENL_UNS_ADMIN_PERM,
14618                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14619                                   NL80211_FLAG_NEED_RTNL,
14620         },
14621         {
14622                 .cmd = NL80211_CMD_VENDOR,
14623                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14624                 .doit = nl80211_vendor_cmd,
14625                 .dumpit = nl80211_vendor_cmd_dump,
14626                 .flags = GENL_UNS_ADMIN_PERM,
14627                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14628                                   NL80211_FLAG_NEED_RTNL |
14629                                   NL80211_FLAG_CLEAR_SKB,
14630         },
14631         {
14632                 .cmd = NL80211_CMD_SET_QOS_MAP,
14633                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14634                 .doit = nl80211_set_qos_map,
14635                 .flags = GENL_UNS_ADMIN_PERM,
14636                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14637                                   NL80211_FLAG_NEED_RTNL,
14638         },
14639         {
14640                 .cmd = NL80211_CMD_ADD_TX_TS,
14641                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14642                 .doit = nl80211_add_tx_ts,
14643                 .flags = GENL_UNS_ADMIN_PERM,
14644                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14645                                   NL80211_FLAG_NEED_RTNL,
14646         },
14647         {
14648                 .cmd = NL80211_CMD_DEL_TX_TS,
14649                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14650                 .doit = nl80211_del_tx_ts,
14651                 .flags = GENL_UNS_ADMIN_PERM,
14652                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14653                                   NL80211_FLAG_NEED_RTNL,
14654         },
14655         {
14656                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14657                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14658                 .doit = nl80211_tdls_channel_switch,
14659                 .flags = GENL_UNS_ADMIN_PERM,
14660                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14661                                   NL80211_FLAG_NEED_RTNL,
14662         },
14663         {
14664                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14665                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14666                 .doit = nl80211_tdls_cancel_channel_switch,
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_SET_MULTICAST_TO_UNICAST,
14673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14674                 .doit = nl80211_set_multicast_to_unicast,
14675                 .flags = GENL_UNS_ADMIN_PERM,
14676                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14677                                   NL80211_FLAG_NEED_RTNL,
14678         },
14679         {
14680                 .cmd = NL80211_CMD_SET_PMK,
14681                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682                 .doit = nl80211_set_pmk,
14683                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14684                                   NL80211_FLAG_NEED_RTNL |
14685                                   NL80211_FLAG_CLEAR_SKB,
14686         },
14687         {
14688                 .cmd = NL80211_CMD_DEL_PMK,
14689                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14690                 .doit = nl80211_del_pmk,
14691                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14692                                   NL80211_FLAG_NEED_RTNL,
14693         },
14694         {
14695                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14696                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14697                 .doit = nl80211_external_auth,
14698                 .flags = GENL_ADMIN_PERM,
14699                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14700                                   NL80211_FLAG_NEED_RTNL,
14701         },
14702         {
14703                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14704                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14705                 .doit = nl80211_tx_control_port,
14706                 .flags = GENL_UNS_ADMIN_PERM,
14707                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14708                                   NL80211_FLAG_NEED_RTNL,
14709         },
14710         {
14711                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14712                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14713                 .doit = nl80211_get_ftm_responder_stats,
14714                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14715                                   NL80211_FLAG_NEED_RTNL,
14716         },
14717         {
14718                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14719                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14720                 .doit = nl80211_pmsr_start,
14721                 .flags = GENL_UNS_ADMIN_PERM,
14722                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14723                                   NL80211_FLAG_NEED_RTNL,
14724         },
14725         {
14726                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14727                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14728                 .doit = nl80211_notify_radar_detection,
14729                 .flags = GENL_UNS_ADMIN_PERM,
14730                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14731                                   NL80211_FLAG_NEED_RTNL,
14732         },
14733         {
14734                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14735                 .doit = nl80211_update_owe_info,
14736                 .flags = GENL_ADMIN_PERM,
14737                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14738                                   NL80211_FLAG_NEED_RTNL,
14739         },
14740         {
14741                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14742                 .doit = nl80211_probe_mesh_link,
14743                 .flags = GENL_UNS_ADMIN_PERM,
14744                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14745                                   NL80211_FLAG_NEED_RTNL,
14746         },
14747 };
14748
14749 static struct genl_family nl80211_fam __ro_after_init = {
14750         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14751         .hdrsize = 0,                   /* no private header */
14752         .version = 1,                   /* no particular meaning now */
14753         .maxattr = NL80211_ATTR_MAX,
14754         .policy = nl80211_policy,
14755         .netnsok = true,
14756         .pre_doit = nl80211_pre_doit,
14757         .post_doit = nl80211_post_doit,
14758         .module = THIS_MODULE,
14759         .ops = nl80211_ops,
14760         .n_ops = ARRAY_SIZE(nl80211_ops),
14761         .mcgrps = nl80211_mcgrps,
14762         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14763         .parallel_ops = true,
14764 };
14765
14766 /* notification functions */
14767
14768 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14769                           enum nl80211_commands cmd)
14770 {
14771         struct sk_buff *msg;
14772         struct nl80211_dump_wiphy_state state = {};
14773
14774         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14775                 cmd != NL80211_CMD_DEL_WIPHY);
14776
14777         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14778         if (!msg)
14779                 return;
14780
14781         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14782                 nlmsg_free(msg);
14783                 return;
14784         }
14785
14786         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14787                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14788 }
14789
14790 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14791                                 struct wireless_dev *wdev,
14792                                 enum nl80211_commands cmd)
14793 {
14794         struct sk_buff *msg;
14795
14796         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14797         if (!msg)
14798                 return;
14799
14800         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14801                 nlmsg_free(msg);
14802                 return;
14803         }
14804
14805         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14806                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14807 }
14808
14809 static int nl80211_add_scan_req(struct sk_buff *msg,
14810                                 struct cfg80211_registered_device *rdev)
14811 {
14812         struct cfg80211_scan_request *req = rdev->scan_req;
14813         struct nlattr *nest;
14814         int i;
14815
14816         if (WARN_ON(!req))
14817                 return 0;
14818
14819         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14820         if (!nest)
14821                 goto nla_put_failure;
14822         for (i = 0; i < req->n_ssids; i++) {
14823                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14824                         goto nla_put_failure;
14825         }
14826         nla_nest_end(msg, nest);
14827
14828         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14829         if (!nest)
14830                 goto nla_put_failure;
14831         for (i = 0; i < req->n_channels; i++) {
14832                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14833                         goto nla_put_failure;
14834         }
14835         nla_nest_end(msg, nest);
14836
14837         if (req->ie &&
14838             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14839                 goto nla_put_failure;
14840
14841         if (req->flags &&
14842             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14843                 goto nla_put_failure;
14844
14845         if (req->info.scan_start_tsf &&
14846             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14847                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14848              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14849                      req->info.tsf_bssid)))
14850                 goto nla_put_failure;
14851
14852         return 0;
14853  nla_put_failure:
14854         return -ENOBUFS;
14855 }
14856
14857 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14858                                  struct cfg80211_registered_device *rdev,
14859                                  struct wireless_dev *wdev,
14860                                  u32 portid, u32 seq, int flags,
14861                                  u32 cmd)
14862 {
14863         void *hdr;
14864
14865         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14866         if (!hdr)
14867                 return -1;
14868
14869         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14870             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14871                                          wdev->netdev->ifindex)) ||
14872             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14873                               NL80211_ATTR_PAD))
14874                 goto nla_put_failure;
14875
14876         /* ignore errors and send incomplete event anyway */
14877         nl80211_add_scan_req(msg, rdev);
14878
14879         genlmsg_end(msg, hdr);
14880         return 0;
14881
14882  nla_put_failure:
14883         genlmsg_cancel(msg, hdr);
14884         return -EMSGSIZE;
14885 }
14886
14887 static int
14888 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14889                             struct cfg80211_sched_scan_request *req, u32 cmd)
14890 {
14891         void *hdr;
14892
14893         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14894         if (!hdr)
14895                 return -1;
14896
14897         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14898                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14899             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14900             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14901                               NL80211_ATTR_PAD))
14902                 goto nla_put_failure;
14903
14904         genlmsg_end(msg, hdr);
14905         return 0;
14906
14907  nla_put_failure:
14908         genlmsg_cancel(msg, hdr);
14909         return -EMSGSIZE;
14910 }
14911
14912 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14913                              struct wireless_dev *wdev)
14914 {
14915         struct sk_buff *msg;
14916
14917         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14918         if (!msg)
14919                 return;
14920
14921         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14922                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14923                 nlmsg_free(msg);
14924                 return;
14925         }
14926
14927         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14928                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14929 }
14930
14931 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14932                                        struct wireless_dev *wdev, bool aborted)
14933 {
14934         struct sk_buff *msg;
14935
14936         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14937         if (!msg)
14938                 return NULL;
14939
14940         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14941                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14942                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14943                 nlmsg_free(msg);
14944                 return NULL;
14945         }
14946
14947         return msg;
14948 }
14949
14950 /* send message created by nl80211_build_scan_msg() */
14951 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14952                            struct sk_buff *msg)
14953 {
14954         if (!msg)
14955                 return;
14956
14957         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14958                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14959 }
14960
14961 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14962 {
14963         struct sk_buff *msg;
14964
14965         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14966         if (!msg)
14967                 return;
14968
14969         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14970                 nlmsg_free(msg);
14971                 return;
14972         }
14973
14974         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14975                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14976 }
14977
14978 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14979                                           struct regulatory_request *request)
14980 {
14981         /* Userspace can always count this one always being set */
14982         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14983                 goto nla_put_failure;
14984
14985         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14986                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14987                                NL80211_REGDOM_TYPE_WORLD))
14988                         goto nla_put_failure;
14989         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14990                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14991                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14992                         goto nla_put_failure;
14993         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14994                    request->intersect) {
14995                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14996                                NL80211_REGDOM_TYPE_INTERSECTION))
14997                         goto nla_put_failure;
14998         } else {
14999                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15000                                NL80211_REGDOM_TYPE_COUNTRY) ||
15001                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15002                                    request->alpha2))
15003                         goto nla_put_failure;
15004         }
15005
15006         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15007                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15008
15009                 if (wiphy &&
15010                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15011                         goto nla_put_failure;
15012
15013                 if (wiphy &&
15014                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15015                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15016                         goto nla_put_failure;
15017         }
15018
15019         return true;
15020
15021 nla_put_failure:
15022         return false;
15023 }
15024
15025 /*
15026  * This can happen on global regulatory changes or device specific settings
15027  * based on custom regulatory domains.
15028  */
15029 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15030                                      struct regulatory_request *request)
15031 {
15032         struct sk_buff *msg;
15033         void *hdr;
15034
15035         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15036         if (!msg)
15037                 return;
15038
15039         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15040         if (!hdr)
15041                 goto nla_put_failure;
15042
15043         if (!nl80211_reg_change_event_fill(msg, request))
15044                 goto nla_put_failure;
15045
15046         genlmsg_end(msg, hdr);
15047
15048         rcu_read_lock();
15049         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15050                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15051         rcu_read_unlock();
15052
15053         return;
15054
15055 nla_put_failure:
15056         nlmsg_free(msg);
15057 }
15058
15059 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15060                                     struct net_device *netdev,
15061                                     const u8 *buf, size_t len,
15062                                     enum nl80211_commands cmd, gfp_t gfp,
15063                                     int uapsd_queues, const u8 *req_ies,
15064                                     size_t req_ies_len)
15065 {
15066         struct sk_buff *msg;
15067         void *hdr;
15068
15069         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15070         if (!msg)
15071                 return;
15072
15073         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15074         if (!hdr) {
15075                 nlmsg_free(msg);
15076                 return;
15077         }
15078
15079         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15080             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15081             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15082             (req_ies &&
15083              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15084                 goto nla_put_failure;
15085
15086         if (uapsd_queues >= 0) {
15087                 struct nlattr *nla_wmm =
15088                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15089                 if (!nla_wmm)
15090                         goto nla_put_failure;
15091
15092                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15093                                uapsd_queues))
15094                         goto nla_put_failure;
15095
15096                 nla_nest_end(msg, nla_wmm);
15097         }
15098
15099         genlmsg_end(msg, hdr);
15100
15101         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15102                                 NL80211_MCGRP_MLME, gfp);
15103         return;
15104
15105  nla_put_failure:
15106         nlmsg_free(msg);
15107 }
15108
15109 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15110                           struct net_device *netdev, const u8 *buf,
15111                           size_t len, gfp_t gfp)
15112 {
15113         nl80211_send_mlme_event(rdev, netdev, buf, len,
15114                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15115 }
15116
15117 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15118                            struct net_device *netdev, const u8 *buf,
15119                            size_t len, gfp_t gfp, int uapsd_queues,
15120                            const u8 *req_ies, size_t req_ies_len)
15121 {
15122         nl80211_send_mlme_event(rdev, netdev, buf, len,
15123                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15124                                 req_ies, req_ies_len);
15125 }
15126
15127 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15128                          struct net_device *netdev, const u8 *buf,
15129                          size_t len, gfp_t gfp)
15130 {
15131         nl80211_send_mlme_event(rdev, netdev, buf, len,
15132                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15133 }
15134
15135 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15136                            struct net_device *netdev, const u8 *buf,
15137                            size_t len, gfp_t gfp)
15138 {
15139         nl80211_send_mlme_event(rdev, netdev, buf, len,
15140                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15141 }
15142
15143 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15144                                   size_t len)
15145 {
15146         struct wireless_dev *wdev = dev->ieee80211_ptr;
15147         struct wiphy *wiphy = wdev->wiphy;
15148         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15149         const struct ieee80211_mgmt *mgmt = (void *)buf;
15150         u32 cmd;
15151
15152         if (WARN_ON(len < 2))
15153                 return;
15154
15155         if (ieee80211_is_deauth(mgmt->frame_control))
15156                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15157         else
15158                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15159
15160         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15161         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15162                                 NULL, 0);
15163 }
15164 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15165
15166 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15167                                       struct net_device *netdev, int cmd,
15168                                       const u8 *addr, gfp_t gfp)
15169 {
15170         struct sk_buff *msg;
15171         void *hdr;
15172
15173         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15174         if (!msg)
15175                 return;
15176
15177         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15178         if (!hdr) {
15179                 nlmsg_free(msg);
15180                 return;
15181         }
15182
15183         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15184             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15185             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15186             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15187                 goto nla_put_failure;
15188
15189         genlmsg_end(msg, hdr);
15190
15191         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15192                                 NL80211_MCGRP_MLME, gfp);
15193         return;
15194
15195  nla_put_failure:
15196         nlmsg_free(msg);
15197 }
15198
15199 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15200                                struct net_device *netdev, const u8 *addr,
15201                                gfp_t gfp)
15202 {
15203         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15204                                   addr, gfp);
15205 }
15206
15207 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15208                                 struct net_device *netdev, const u8 *addr,
15209                                 gfp_t gfp)
15210 {
15211         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15212                                   addr, gfp);
15213 }
15214
15215 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15216                                  struct net_device *netdev,
15217                                  struct cfg80211_connect_resp_params *cr,
15218                                  gfp_t gfp)
15219 {
15220         struct sk_buff *msg;
15221         void *hdr;
15222
15223         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15224                         cr->fils.kek_len + cr->fils.pmk_len +
15225                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15226         if (!msg)
15227                 return;
15228
15229         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15230         if (!hdr) {
15231                 nlmsg_free(msg);
15232                 return;
15233         }
15234
15235         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15236             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15237             (cr->bssid &&
15238              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15239             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15240                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15241                         cr->status) ||
15242             (cr->status < 0 &&
15243              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15244               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15245                           cr->timeout_reason))) ||
15246             (cr->req_ie &&
15247              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15248             (cr->resp_ie &&
15249              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15250                      cr->resp_ie)) ||
15251             (cr->fils.update_erp_next_seq_num &&
15252              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15253                          cr->fils.erp_next_seq_num)) ||
15254             (cr->status == WLAN_STATUS_SUCCESS &&
15255              ((cr->fils.kek &&
15256                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15257                        cr->fils.kek)) ||
15258               (cr->fils.pmk &&
15259                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15260               (cr->fils.pmkid &&
15261                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15262                 goto nla_put_failure;
15263
15264         genlmsg_end(msg, hdr);
15265
15266         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15267                                 NL80211_MCGRP_MLME, gfp);
15268         return;
15269
15270  nla_put_failure:
15271         nlmsg_free(msg);
15272 }
15273
15274 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15275                          struct net_device *netdev,
15276                          struct cfg80211_roam_info *info, gfp_t gfp)
15277 {
15278         struct sk_buff *msg;
15279         void *hdr;
15280         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15281
15282         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15283                         info->fils.kek_len + info->fils.pmk_len +
15284                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15285         if (!msg)
15286                 return;
15287
15288         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15289         if (!hdr) {
15290                 nlmsg_free(msg);
15291                 return;
15292         }
15293
15294         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15295             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15296             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15297             (info->req_ie &&
15298              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15299                      info->req_ie)) ||
15300             (info->resp_ie &&
15301              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15302                      info->resp_ie)) ||
15303             (info->fils.update_erp_next_seq_num &&
15304              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15305                          info->fils.erp_next_seq_num)) ||
15306             (info->fils.kek &&
15307              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15308                      info->fils.kek)) ||
15309             (info->fils.pmk &&
15310              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15311             (info->fils.pmkid &&
15312              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15313                 goto nla_put_failure;
15314
15315         genlmsg_end(msg, hdr);
15316
15317         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15318                                 NL80211_MCGRP_MLME, gfp);
15319         return;
15320
15321  nla_put_failure:
15322         nlmsg_free(msg);
15323 }
15324
15325 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15326                                   struct net_device *netdev, const u8 *bssid)
15327 {
15328         struct sk_buff *msg;
15329         void *hdr;
15330
15331         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15332         if (!msg)
15333                 return;
15334
15335         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15336         if (!hdr) {
15337                 nlmsg_free(msg);
15338                 return;
15339         }
15340
15341         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15342             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15343             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15344                 goto nla_put_failure;
15345
15346         genlmsg_end(msg, hdr);
15347
15348         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15349                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15350         return;
15351
15352  nla_put_failure:
15353         nlmsg_free(msg);
15354 }
15355
15356 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15357                                struct net_device *netdev, u16 reason,
15358                                const u8 *ie, size_t ie_len, bool from_ap)
15359 {
15360         struct sk_buff *msg;
15361         void *hdr;
15362
15363         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15364         if (!msg)
15365                 return;
15366
15367         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15368         if (!hdr) {
15369                 nlmsg_free(msg);
15370                 return;
15371         }
15372
15373         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15374             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15375             (reason &&
15376              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15377             (from_ap &&
15378              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15379             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15380                 goto nla_put_failure;
15381
15382         genlmsg_end(msg, hdr);
15383
15384         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15385                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15386         return;
15387
15388  nla_put_failure:
15389         nlmsg_free(msg);
15390 }
15391
15392 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15393                              struct net_device *netdev, const u8 *bssid,
15394                              gfp_t gfp)
15395 {
15396         struct sk_buff *msg;
15397         void *hdr;
15398
15399         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15400         if (!msg)
15401                 return;
15402
15403         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15404         if (!hdr) {
15405                 nlmsg_free(msg);
15406                 return;
15407         }
15408
15409         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15410             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15411             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15412                 goto nla_put_failure;
15413
15414         genlmsg_end(msg, hdr);
15415
15416         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15417                                 NL80211_MCGRP_MLME, gfp);
15418         return;
15419
15420  nla_put_failure:
15421         nlmsg_free(msg);
15422 }
15423
15424 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15425                                         const u8 *ie, u8 ie_len,
15426                                         int sig_dbm, gfp_t gfp)
15427 {
15428         struct wireless_dev *wdev = dev->ieee80211_ptr;
15429         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15430         struct sk_buff *msg;
15431         void *hdr;
15432
15433         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15434                 return;
15435
15436         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15437
15438         msg = nlmsg_new(100 + ie_len, gfp);
15439         if (!msg)
15440                 return;
15441
15442         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15443         if (!hdr) {
15444                 nlmsg_free(msg);
15445                 return;
15446         }
15447
15448         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15449             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15450             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15451             (ie_len && ie &&
15452              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15453             (sig_dbm &&
15454              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15455                 goto nla_put_failure;
15456
15457         genlmsg_end(msg, hdr);
15458
15459         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15460                                 NL80211_MCGRP_MLME, gfp);
15461         return;
15462
15463  nla_put_failure:
15464         nlmsg_free(msg);
15465 }
15466 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15467
15468 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15469                                  struct net_device *netdev, const u8 *addr,
15470                                  enum nl80211_key_type key_type, int key_id,
15471                                  const u8 *tsc, gfp_t gfp)
15472 {
15473         struct sk_buff *msg;
15474         void *hdr;
15475
15476         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15477         if (!msg)
15478                 return;
15479
15480         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15481         if (!hdr) {
15482                 nlmsg_free(msg);
15483                 return;
15484         }
15485
15486         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15487             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15488             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15489             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15490             (key_id != -1 &&
15491              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15492             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15493                 goto nla_put_failure;
15494
15495         genlmsg_end(msg, hdr);
15496
15497         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15498                                 NL80211_MCGRP_MLME, gfp);
15499         return;
15500
15501  nla_put_failure:
15502         nlmsg_free(msg);
15503 }
15504
15505 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15506                                     struct ieee80211_channel *channel_before,
15507                                     struct ieee80211_channel *channel_after)
15508 {
15509         struct sk_buff *msg;
15510         void *hdr;
15511         struct nlattr *nl_freq;
15512
15513         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15514         if (!msg)
15515                 return;
15516
15517         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15518         if (!hdr) {
15519                 nlmsg_free(msg);
15520                 return;
15521         }
15522
15523         /*
15524          * Since we are applying the beacon hint to a wiphy we know its
15525          * wiphy_idx is valid
15526          */
15527         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15528                 goto nla_put_failure;
15529
15530         /* Before */
15531         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15532         if (!nl_freq)
15533                 goto nla_put_failure;
15534
15535         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15536                 goto nla_put_failure;
15537         nla_nest_end(msg, nl_freq);
15538
15539         /* After */
15540         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15541         if (!nl_freq)
15542                 goto nla_put_failure;
15543
15544         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15545                 goto nla_put_failure;
15546         nla_nest_end(msg, nl_freq);
15547
15548         genlmsg_end(msg, hdr);
15549
15550         rcu_read_lock();
15551         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15552                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15553         rcu_read_unlock();
15554
15555         return;
15556
15557 nla_put_failure:
15558         nlmsg_free(msg);
15559 }
15560
15561 static void nl80211_send_remain_on_chan_event(
15562         int cmd, struct cfg80211_registered_device *rdev,
15563         struct wireless_dev *wdev, u64 cookie,
15564         struct ieee80211_channel *chan,
15565         unsigned int duration, gfp_t gfp)
15566 {
15567         struct sk_buff *msg;
15568         void *hdr;
15569
15570         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15571         if (!msg)
15572                 return;
15573
15574         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15575         if (!hdr) {
15576                 nlmsg_free(msg);
15577                 return;
15578         }
15579
15580         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15581             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15582                                          wdev->netdev->ifindex)) ||
15583             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15584                               NL80211_ATTR_PAD) ||
15585             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15586             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15587                         NL80211_CHAN_NO_HT) ||
15588             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15589                               NL80211_ATTR_PAD))
15590                 goto nla_put_failure;
15591
15592         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15593             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15594                 goto nla_put_failure;
15595
15596         genlmsg_end(msg, hdr);
15597
15598         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15599                                 NL80211_MCGRP_MLME, gfp);
15600         return;
15601
15602  nla_put_failure:
15603         nlmsg_free(msg);
15604 }
15605
15606 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15607                                struct ieee80211_channel *chan,
15608                                unsigned int duration, gfp_t gfp)
15609 {
15610         struct wiphy *wiphy = wdev->wiphy;
15611         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15612
15613         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15614         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15615                                           rdev, wdev, cookie, chan,
15616                                           duration, gfp);
15617 }
15618 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15619
15620 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15621                                         struct ieee80211_channel *chan,
15622                                         gfp_t gfp)
15623 {
15624         struct wiphy *wiphy = wdev->wiphy;
15625         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15626
15627         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15628         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15629                                           rdev, wdev, cookie, chan, 0, gfp);
15630 }
15631 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15632
15633 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15634                                         struct ieee80211_channel *chan,
15635                                         gfp_t gfp)
15636 {
15637         struct wiphy *wiphy = wdev->wiphy;
15638         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15639
15640         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15641         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15642                                           rdev, wdev, cookie, chan, 0, gfp);
15643 }
15644 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15645
15646 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15647                       struct station_info *sinfo, gfp_t gfp)
15648 {
15649         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15650         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15651         struct sk_buff *msg;
15652
15653         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15654
15655         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15656         if (!msg)
15657                 return;
15658
15659         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15660                                  rdev, dev, mac_addr, sinfo) < 0) {
15661                 nlmsg_free(msg);
15662                 return;
15663         }
15664
15665         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15666                                 NL80211_MCGRP_MLME, gfp);
15667 }
15668 EXPORT_SYMBOL(cfg80211_new_sta);
15669
15670 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15671                             struct station_info *sinfo, gfp_t gfp)
15672 {
15673         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15674         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15675         struct sk_buff *msg;
15676         struct station_info empty_sinfo = {};
15677
15678         if (!sinfo)
15679                 sinfo = &empty_sinfo;
15680
15681         trace_cfg80211_del_sta(dev, mac_addr);
15682
15683         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15684         if (!msg) {
15685                 cfg80211_sinfo_release_content(sinfo);
15686                 return;
15687         }
15688
15689         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15690                                  rdev, dev, mac_addr, sinfo) < 0) {
15691                 nlmsg_free(msg);
15692                 return;
15693         }
15694
15695         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15696                                 NL80211_MCGRP_MLME, gfp);
15697 }
15698 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15699
15700 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15701                           enum nl80211_connect_failed_reason reason,
15702                           gfp_t gfp)
15703 {
15704         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15705         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15706         struct sk_buff *msg;
15707         void *hdr;
15708
15709         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15710         if (!msg)
15711                 return;
15712
15713         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15714         if (!hdr) {
15715                 nlmsg_free(msg);
15716                 return;
15717         }
15718
15719         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15720             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15721             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15722                 goto nla_put_failure;
15723
15724         genlmsg_end(msg, hdr);
15725
15726         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15727                                 NL80211_MCGRP_MLME, gfp);
15728         return;
15729
15730  nla_put_failure:
15731         nlmsg_free(msg);
15732 }
15733 EXPORT_SYMBOL(cfg80211_conn_failed);
15734
15735 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15736                                        const u8 *addr, gfp_t gfp)
15737 {
15738         struct wireless_dev *wdev = dev->ieee80211_ptr;
15739         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15740         struct sk_buff *msg;
15741         void *hdr;
15742         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15743
15744         if (!nlportid)
15745                 return false;
15746
15747         msg = nlmsg_new(100, gfp);
15748         if (!msg)
15749                 return true;
15750
15751         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15752         if (!hdr) {
15753                 nlmsg_free(msg);
15754                 return true;
15755         }
15756
15757         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15758             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15759             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15760                 goto nla_put_failure;
15761
15762         genlmsg_end(msg, hdr);
15763         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15764         return true;
15765
15766  nla_put_failure:
15767         nlmsg_free(msg);
15768         return true;
15769 }
15770
15771 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15772                                 const u8 *addr, gfp_t gfp)
15773 {
15774         struct wireless_dev *wdev = dev->ieee80211_ptr;
15775         bool ret;
15776
15777         trace_cfg80211_rx_spurious_frame(dev, addr);
15778
15779         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15780                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15781                 trace_cfg80211_return_bool(false);
15782                 return false;
15783         }
15784         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15785                                          addr, gfp);
15786         trace_cfg80211_return_bool(ret);
15787         return ret;
15788 }
15789 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15790
15791 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15792                                         const u8 *addr, gfp_t gfp)
15793 {
15794         struct wireless_dev *wdev = dev->ieee80211_ptr;
15795         bool ret;
15796
15797         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15798
15799         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15800                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15801                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15802                 trace_cfg80211_return_bool(false);
15803                 return false;
15804         }
15805         ret = __nl80211_unexpected_frame(dev,
15806                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15807                                          addr, gfp);
15808         trace_cfg80211_return_bool(ret);
15809         return ret;
15810 }
15811 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15812
15813 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15814                       struct wireless_dev *wdev, u32 nlportid,
15815                       int freq, int sig_dbm,
15816                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15817 {
15818         struct net_device *netdev = wdev->netdev;
15819         struct sk_buff *msg;
15820         void *hdr;
15821
15822         msg = nlmsg_new(100 + len, gfp);
15823         if (!msg)
15824                 return -ENOMEM;
15825
15826         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15827         if (!hdr) {
15828                 nlmsg_free(msg);
15829                 return -ENOMEM;
15830         }
15831
15832         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15833             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15834                                         netdev->ifindex)) ||
15835             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15836                               NL80211_ATTR_PAD) ||
15837             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15838             (sig_dbm &&
15839              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15840             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15841             (flags &&
15842              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15843                 goto nla_put_failure;
15844
15845         genlmsg_end(msg, hdr);
15846
15847         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15848
15849  nla_put_failure:
15850         nlmsg_free(msg);
15851         return -ENOBUFS;
15852 }
15853
15854 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15855                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15856 {
15857         struct wiphy *wiphy = wdev->wiphy;
15858         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15859         struct net_device *netdev = wdev->netdev;
15860         struct sk_buff *msg;
15861         void *hdr;
15862
15863         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15864
15865         msg = nlmsg_new(100 + len, gfp);
15866         if (!msg)
15867                 return;
15868
15869         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15870         if (!hdr) {
15871                 nlmsg_free(msg);
15872                 return;
15873         }
15874
15875         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15876             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15877                                    netdev->ifindex)) ||
15878             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15879                               NL80211_ATTR_PAD) ||
15880             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15881             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15882                               NL80211_ATTR_PAD) ||
15883             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15884                 goto nla_put_failure;
15885
15886         genlmsg_end(msg, hdr);
15887
15888         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15889                                 NL80211_MCGRP_MLME, gfp);
15890         return;
15891
15892  nla_put_failure:
15893         nlmsg_free(msg);
15894 }
15895 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15896
15897 static int __nl80211_rx_control_port(struct net_device *dev,
15898                                      struct sk_buff *skb,
15899                                      bool unencrypted, gfp_t gfp)
15900 {
15901         struct wireless_dev *wdev = dev->ieee80211_ptr;
15902         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15903         struct ethhdr *ehdr = eth_hdr(skb);
15904         const u8 *addr = ehdr->h_source;
15905         u16 proto = be16_to_cpu(skb->protocol);
15906         struct sk_buff *msg;
15907         void *hdr;
15908         struct nlattr *frame;
15909
15910         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15911
15912         if (!nlportid)
15913                 return -ENOENT;
15914
15915         msg = nlmsg_new(100 + skb->len, gfp);
15916         if (!msg)
15917                 return -ENOMEM;
15918
15919         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15920         if (!hdr) {
15921                 nlmsg_free(msg);
15922                 return -ENOBUFS;
15923         }
15924
15925         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15926             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15927             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15928                               NL80211_ATTR_PAD) ||
15929             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15930             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15931             (unencrypted && nla_put_flag(msg,
15932                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15933                 goto nla_put_failure;
15934
15935         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15936         if (!frame)
15937                 goto nla_put_failure;
15938
15939         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15940         genlmsg_end(msg, hdr);
15941
15942         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15943
15944  nla_put_failure:
15945         nlmsg_free(msg);
15946         return -ENOBUFS;
15947 }
15948
15949 bool cfg80211_rx_control_port(struct net_device *dev,
15950                               struct sk_buff *skb, bool unencrypted)
15951 {
15952         int ret;
15953
15954         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15955         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15956         trace_cfg80211_return_bool(ret == 0);
15957         return ret == 0;
15958 }
15959 EXPORT_SYMBOL(cfg80211_rx_control_port);
15960
15961 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15962                                             const char *mac, gfp_t gfp)
15963 {
15964         struct wireless_dev *wdev = dev->ieee80211_ptr;
15965         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15966         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15967         void **cb;
15968
15969         if (!msg)
15970                 return NULL;
15971
15972         cb = (void **)msg->cb;
15973
15974         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15975         if (!cb[0]) {
15976                 nlmsg_free(msg);
15977                 return NULL;
15978         }
15979
15980         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15981             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15982                 goto nla_put_failure;
15983
15984         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15985                 goto nla_put_failure;
15986
15987         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15988         if (!cb[1])
15989                 goto nla_put_failure;
15990
15991         cb[2] = rdev;
15992
15993         return msg;
15994  nla_put_failure:
15995         nlmsg_free(msg);
15996         return NULL;
15997 }
15998
15999 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16000 {
16001         void **cb = (void **)msg->cb;
16002         struct cfg80211_registered_device *rdev = cb[2];
16003
16004         nla_nest_end(msg, cb[1]);
16005         genlmsg_end(msg, cb[0]);
16006
16007         memset(msg->cb, 0, sizeof(msg->cb));
16008
16009         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16010                                 NL80211_MCGRP_MLME, gfp);
16011 }
16012
16013 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16014                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16015                               s32 rssi_level, gfp_t gfp)
16016 {
16017         struct sk_buff *msg;
16018         struct wireless_dev *wdev = dev->ieee80211_ptr;
16019         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16020
16021         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16022
16023         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16024                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16025                 return;
16026
16027         if (wdev->cqm_config) {
16028                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16029
16030                 cfg80211_cqm_rssi_update(rdev, dev);
16031
16032                 if (rssi_level == 0)
16033                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16034         }
16035
16036         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16037         if (!msg)
16038                 return;
16039
16040         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16041                         rssi_event))
16042                 goto nla_put_failure;
16043
16044         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16045                                       rssi_level))
16046                 goto nla_put_failure;
16047
16048         cfg80211_send_cqm(msg, gfp);
16049
16050         return;
16051
16052  nla_put_failure:
16053         nlmsg_free(msg);
16054 }
16055 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16056
16057 void cfg80211_cqm_txe_notify(struct net_device *dev,
16058                              const u8 *peer, u32 num_packets,
16059                              u32 rate, u32 intvl, gfp_t gfp)
16060 {
16061         struct sk_buff *msg;
16062
16063         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16064         if (!msg)
16065                 return;
16066
16067         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16068                 goto nla_put_failure;
16069
16070         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16071                 goto nla_put_failure;
16072
16073         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16074                 goto nla_put_failure;
16075
16076         cfg80211_send_cqm(msg, gfp);
16077         return;
16078
16079  nla_put_failure:
16080         nlmsg_free(msg);
16081 }
16082 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16083
16084 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16085                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16086 {
16087         struct sk_buff *msg;
16088
16089         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16090
16091         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16092         if (!msg)
16093                 return;
16094
16095         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16096                 goto nla_put_failure;
16097
16098         cfg80211_send_cqm(msg, gfp);
16099         return;
16100
16101  nla_put_failure:
16102         nlmsg_free(msg);
16103 }
16104 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16105
16106 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16107 {
16108         struct sk_buff *msg;
16109
16110         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16111         if (!msg)
16112                 return;
16113
16114         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16115                 goto nla_put_failure;
16116
16117         cfg80211_send_cqm(msg, gfp);
16118         return;
16119
16120  nla_put_failure:
16121         nlmsg_free(msg);
16122 }
16123 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16124
16125 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16126                                      struct net_device *netdev, const u8 *bssid,
16127                                      const u8 *replay_ctr, gfp_t gfp)
16128 {
16129         struct sk_buff *msg;
16130         struct nlattr *rekey_attr;
16131         void *hdr;
16132
16133         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16134         if (!msg)
16135                 return;
16136
16137         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16138         if (!hdr) {
16139                 nlmsg_free(msg);
16140                 return;
16141         }
16142
16143         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16144             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16145             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16146                 goto nla_put_failure;
16147
16148         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16149         if (!rekey_attr)
16150                 goto nla_put_failure;
16151
16152         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16153                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16154                 goto nla_put_failure;
16155
16156         nla_nest_end(msg, rekey_attr);
16157
16158         genlmsg_end(msg, hdr);
16159
16160         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16161                                 NL80211_MCGRP_MLME, gfp);
16162         return;
16163
16164  nla_put_failure:
16165         nlmsg_free(msg);
16166 }
16167
16168 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16169                                const u8 *replay_ctr, gfp_t gfp)
16170 {
16171         struct wireless_dev *wdev = dev->ieee80211_ptr;
16172         struct wiphy *wiphy = wdev->wiphy;
16173         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16174
16175         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16176         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16177 }
16178 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16179
16180 static void
16181 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16182                                struct net_device *netdev, int index,
16183                                const u8 *bssid, bool preauth, gfp_t gfp)
16184 {
16185         struct sk_buff *msg;
16186         struct nlattr *attr;
16187         void *hdr;
16188
16189         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16190         if (!msg)
16191                 return;
16192
16193         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16194         if (!hdr) {
16195                 nlmsg_free(msg);
16196                 return;
16197         }
16198
16199         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16200             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16201                 goto nla_put_failure;
16202
16203         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16204         if (!attr)
16205                 goto nla_put_failure;
16206
16207         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16208             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16209             (preauth &&
16210              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16211                 goto nla_put_failure;
16212
16213         nla_nest_end(msg, attr);
16214
16215         genlmsg_end(msg, hdr);
16216
16217         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16218                                 NL80211_MCGRP_MLME, gfp);
16219         return;
16220
16221  nla_put_failure:
16222         nlmsg_free(msg);
16223 }
16224
16225 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16226                                      const u8 *bssid, bool preauth, gfp_t gfp)
16227 {
16228         struct wireless_dev *wdev = dev->ieee80211_ptr;
16229         struct wiphy *wiphy = wdev->wiphy;
16230         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16231
16232         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16233         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16234 }
16235 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16236
16237 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16238                                      struct net_device *netdev,
16239                                      struct cfg80211_chan_def *chandef,
16240                                      gfp_t gfp,
16241                                      enum nl80211_commands notif,
16242                                      u8 count)
16243 {
16244         struct sk_buff *msg;
16245         void *hdr;
16246
16247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16248         if (!msg)
16249                 return;
16250
16251         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16252         if (!hdr) {
16253                 nlmsg_free(msg);
16254                 return;
16255         }
16256
16257         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16258                 goto nla_put_failure;
16259
16260         if (nl80211_send_chandef(msg, chandef))
16261                 goto nla_put_failure;
16262
16263         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16264             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16265                         goto nla_put_failure;
16266
16267         genlmsg_end(msg, hdr);
16268
16269         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16270                                 NL80211_MCGRP_MLME, gfp);
16271         return;
16272
16273  nla_put_failure:
16274         nlmsg_free(msg);
16275 }
16276
16277 void cfg80211_ch_switch_notify(struct net_device *dev,
16278                                struct cfg80211_chan_def *chandef)
16279 {
16280         struct wireless_dev *wdev = dev->ieee80211_ptr;
16281         struct wiphy *wiphy = wdev->wiphy;
16282         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16283
16284         ASSERT_WDEV_LOCK(wdev);
16285
16286         trace_cfg80211_ch_switch_notify(dev, chandef);
16287
16288         wdev->chandef = *chandef;
16289         wdev->preset_chandef = *chandef;
16290
16291         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16292             !WARN_ON(!wdev->current_bss))
16293                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16294
16295         cfg80211_sched_dfs_chan_update(rdev);
16296
16297         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16298                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16299 }
16300 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16301
16302 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16303                                        struct cfg80211_chan_def *chandef,
16304                                        u8 count)
16305 {
16306         struct wireless_dev *wdev = dev->ieee80211_ptr;
16307         struct wiphy *wiphy = wdev->wiphy;
16308         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16309
16310         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16311
16312         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16313                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16314 }
16315 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16316
16317 void
16318 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16319                      const struct cfg80211_chan_def *chandef,
16320                      enum nl80211_radar_event event,
16321                      struct net_device *netdev, gfp_t gfp)
16322 {
16323         struct sk_buff *msg;
16324         void *hdr;
16325
16326         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16327         if (!msg)
16328                 return;
16329
16330         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16331         if (!hdr) {
16332                 nlmsg_free(msg);
16333                 return;
16334         }
16335
16336         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16337                 goto nla_put_failure;
16338
16339         /* NOP and radar events don't need a netdev parameter */
16340         if (netdev) {
16341                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16342
16343                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16344                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16345                                       NL80211_ATTR_PAD))
16346                         goto nla_put_failure;
16347         }
16348
16349         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16350                 goto nla_put_failure;
16351
16352         if (nl80211_send_chandef(msg, chandef))
16353                 goto nla_put_failure;
16354
16355         genlmsg_end(msg, hdr);
16356
16357         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16358                                 NL80211_MCGRP_MLME, gfp);
16359         return;
16360
16361  nla_put_failure:
16362         nlmsg_free(msg);
16363 }
16364
16365 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16366                                        struct sta_opmode_info *sta_opmode,
16367                                        gfp_t gfp)
16368 {
16369         struct sk_buff *msg;
16370         struct wireless_dev *wdev = dev->ieee80211_ptr;
16371         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16372         void *hdr;
16373
16374         if (WARN_ON(!mac))
16375                 return;
16376
16377         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16378         if (!msg)
16379                 return;
16380
16381         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16382         if (!hdr) {
16383                 nlmsg_free(msg);
16384                 return;
16385         }
16386
16387         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16388                 goto nla_put_failure;
16389
16390         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16391                 goto nla_put_failure;
16392
16393         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16394                 goto nla_put_failure;
16395
16396         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16397             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16398                 goto nla_put_failure;
16399
16400         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16401             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16402                 goto nla_put_failure;
16403
16404         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16405             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16406                 goto nla_put_failure;
16407
16408         genlmsg_end(msg, hdr);
16409
16410         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16411                                 NL80211_MCGRP_MLME, gfp);
16412
16413         return;
16414
16415 nla_put_failure:
16416         nlmsg_free(msg);
16417 }
16418 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16419
16420 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16421                            u64 cookie, bool acked, s32 ack_signal,
16422                            bool is_valid_ack_signal, gfp_t gfp)
16423 {
16424         struct wireless_dev *wdev = dev->ieee80211_ptr;
16425         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16426         struct sk_buff *msg;
16427         void *hdr;
16428
16429         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16430
16431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16432
16433         if (!msg)
16434                 return;
16435
16436         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16437         if (!hdr) {
16438                 nlmsg_free(msg);
16439                 return;
16440         }
16441
16442         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16443             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16444             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16445             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16446                               NL80211_ATTR_PAD) ||
16447             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16448             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16449                                                 ack_signal)))
16450                 goto nla_put_failure;
16451
16452         genlmsg_end(msg, hdr);
16453
16454         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16455                                 NL80211_MCGRP_MLME, gfp);
16456         return;
16457
16458  nla_put_failure:
16459         nlmsg_free(msg);
16460 }
16461 EXPORT_SYMBOL(cfg80211_probe_status);
16462
16463 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16464                                  const u8 *frame, size_t len,
16465                                  int freq, int sig_dbm)
16466 {
16467         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16468         struct sk_buff *msg;
16469         void *hdr;
16470         struct cfg80211_beacon_registration *reg;
16471
16472         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16473
16474         spin_lock_bh(&rdev->beacon_registrations_lock);
16475         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16476                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16477                 if (!msg) {
16478                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16479                         return;
16480                 }
16481
16482                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16483                 if (!hdr)
16484                         goto nla_put_failure;
16485
16486                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16487                     (freq &&
16488                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16489                     (sig_dbm &&
16490                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16491                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16492                         goto nla_put_failure;
16493
16494                 genlmsg_end(msg, hdr);
16495
16496                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16497         }
16498         spin_unlock_bh(&rdev->beacon_registrations_lock);
16499         return;
16500
16501  nla_put_failure:
16502         spin_unlock_bh(&rdev->beacon_registrations_lock);
16503         nlmsg_free(msg);
16504 }
16505 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16506
16507 #ifdef CONFIG_PM
16508 static int cfg80211_net_detect_results(struct sk_buff *msg,
16509                                        struct cfg80211_wowlan_wakeup *wakeup)
16510 {
16511         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16512         struct nlattr *nl_results, *nl_match, *nl_freqs;
16513         int i, j;
16514
16515         nl_results = nla_nest_start_noflag(msg,
16516                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16517         if (!nl_results)
16518                 return -EMSGSIZE;
16519
16520         for (i = 0; i < nd->n_matches; i++) {
16521                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16522
16523                 nl_match = nla_nest_start_noflag(msg, i);
16524                 if (!nl_match)
16525                         break;
16526
16527                 /* The SSID attribute is optional in nl80211, but for
16528                  * simplicity reasons it's always present in the
16529                  * cfg80211 structure.  If a driver can't pass the
16530                  * SSID, that needs to be changed.  A zero length SSID
16531                  * is still a valid SSID (wildcard), so it cannot be
16532                  * used for this purpose.
16533                  */
16534                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16535                             match->ssid.ssid)) {
16536                         nla_nest_cancel(msg, nl_match);
16537                         goto out;
16538                 }
16539
16540                 if (match->n_channels) {
16541                         nl_freqs = nla_nest_start_noflag(msg,
16542                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16543                         if (!nl_freqs) {
16544                                 nla_nest_cancel(msg, nl_match);
16545                                 goto out;
16546                         }
16547
16548                         for (j = 0; j < match->n_channels; j++) {
16549                                 if (nla_put_u32(msg, j, match->channels[j])) {
16550                                         nla_nest_cancel(msg, nl_freqs);
16551                                         nla_nest_cancel(msg, nl_match);
16552                                         goto out;
16553                                 }
16554                         }
16555
16556                         nla_nest_end(msg, nl_freqs);
16557                 }
16558
16559                 nla_nest_end(msg, nl_match);
16560         }
16561
16562 out:
16563         nla_nest_end(msg, nl_results);
16564         return 0;
16565 }
16566
16567 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16568                                    struct cfg80211_wowlan_wakeup *wakeup,
16569                                    gfp_t gfp)
16570 {
16571         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16572         struct sk_buff *msg;
16573         void *hdr;
16574         int size = 200;
16575
16576         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16577
16578         if (wakeup)
16579                 size += wakeup->packet_present_len;
16580
16581         msg = nlmsg_new(size, gfp);
16582         if (!msg)
16583                 return;
16584
16585         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16586         if (!hdr)
16587                 goto free_msg;
16588
16589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16590             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16591                               NL80211_ATTR_PAD))
16592                 goto free_msg;
16593
16594         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16595                                         wdev->netdev->ifindex))
16596                 goto free_msg;
16597
16598         if (wakeup) {
16599                 struct nlattr *reasons;
16600
16601                 reasons = nla_nest_start_noflag(msg,
16602                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16603                 if (!reasons)
16604                         goto free_msg;
16605
16606                 if (wakeup->disconnect &&
16607                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16608                         goto free_msg;
16609                 if (wakeup->magic_pkt &&
16610                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16611                         goto free_msg;
16612                 if (wakeup->gtk_rekey_failure &&
16613                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16614                         goto free_msg;
16615                 if (wakeup->eap_identity_req &&
16616                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16617                         goto free_msg;
16618                 if (wakeup->four_way_handshake &&
16619                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16620                         goto free_msg;
16621                 if (wakeup->rfkill_release &&
16622                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16623                         goto free_msg;
16624
16625                 if (wakeup->pattern_idx >= 0 &&
16626                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16627                                 wakeup->pattern_idx))
16628                         goto free_msg;
16629
16630                 if (wakeup->tcp_match &&
16631                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16632                         goto free_msg;
16633
16634                 if (wakeup->tcp_connlost &&
16635                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16636                         goto free_msg;
16637
16638                 if (wakeup->tcp_nomoretokens &&
16639                     nla_put_flag(msg,
16640                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16641                         goto free_msg;
16642
16643                 if (wakeup->packet) {
16644                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16645                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16646
16647                         if (!wakeup->packet_80211) {
16648                                 pkt_attr =
16649                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16650                                 len_attr =
16651                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16652                         }
16653
16654                         if (wakeup->packet_len &&
16655                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16656                                 goto free_msg;
16657
16658                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16659                                     wakeup->packet))
16660                                 goto free_msg;
16661                 }
16662
16663                 if (wakeup->net_detect &&
16664                     cfg80211_net_detect_results(msg, wakeup))
16665                                 goto free_msg;
16666
16667                 nla_nest_end(msg, reasons);
16668         }
16669
16670         genlmsg_end(msg, hdr);
16671
16672         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16673                                 NL80211_MCGRP_MLME, gfp);
16674         return;
16675
16676  free_msg:
16677         nlmsg_free(msg);
16678 }
16679 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16680 #endif
16681
16682 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16683                                 enum nl80211_tdls_operation oper,
16684                                 u16 reason_code, gfp_t gfp)
16685 {
16686         struct wireless_dev *wdev = dev->ieee80211_ptr;
16687         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16688         struct sk_buff *msg;
16689         void *hdr;
16690
16691         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16692                                          reason_code);
16693
16694         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16695         if (!msg)
16696                 return;
16697
16698         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16699         if (!hdr) {
16700                 nlmsg_free(msg);
16701                 return;
16702         }
16703
16704         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16705             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16706             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16707             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16708             (reason_code > 0 &&
16709              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16710                 goto nla_put_failure;
16711
16712         genlmsg_end(msg, hdr);
16713
16714         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16715                                 NL80211_MCGRP_MLME, gfp);
16716         return;
16717
16718  nla_put_failure:
16719         nlmsg_free(msg);
16720 }
16721 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16722
16723 static int nl80211_netlink_notify(struct notifier_block * nb,
16724                                   unsigned long state,
16725                                   void *_notify)
16726 {
16727         struct netlink_notify *notify = _notify;
16728         struct cfg80211_registered_device *rdev;
16729         struct wireless_dev *wdev;
16730         struct cfg80211_beacon_registration *reg, *tmp;
16731
16732         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16733                 return NOTIFY_DONE;
16734
16735         rcu_read_lock();
16736
16737         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16738                 struct cfg80211_sched_scan_request *sched_scan_req;
16739
16740                 list_for_each_entry_rcu(sched_scan_req,
16741                                         &rdev->sched_scan_req_list,
16742                                         list) {
16743                         if (sched_scan_req->owner_nlportid == notify->portid) {
16744                                 sched_scan_req->nl_owner_dead = true;
16745                                 schedule_work(&rdev->sched_scan_stop_wk);
16746                         }
16747                 }
16748
16749                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16750                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16751
16752                         if (wdev->owner_nlportid == notify->portid) {
16753                                 wdev->nl_owner_dead = true;
16754                                 schedule_work(&rdev->destroy_work);
16755                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16756                                 schedule_work(&wdev->disconnect_wk);
16757                         }
16758
16759                         cfg80211_release_pmsr(wdev, notify->portid);
16760                 }
16761
16762                 spin_lock_bh(&rdev->beacon_registrations_lock);
16763                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16764                                          list) {
16765                         if (reg->nlportid == notify->portid) {
16766                                 list_del(&reg->list);
16767                                 kfree(reg);
16768                                 break;
16769                         }
16770                 }
16771                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16772         }
16773
16774         rcu_read_unlock();
16775
16776         /*
16777          * It is possible that the user space process that is controlling the
16778          * indoor setting disappeared, so notify the regulatory core.
16779          */
16780         regulatory_netlink_notify(notify->portid);
16781         return NOTIFY_OK;
16782 }
16783
16784 static struct notifier_block nl80211_netlink_notifier = {
16785         .notifier_call = nl80211_netlink_notify,
16786 };
16787
16788 void cfg80211_ft_event(struct net_device *netdev,
16789                        struct cfg80211_ft_event_params *ft_event)
16790 {
16791         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16792         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16793         struct sk_buff *msg;
16794         void *hdr;
16795
16796         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16797
16798         if (!ft_event->target_ap)
16799                 return;
16800
16801         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16802                         GFP_KERNEL);
16803         if (!msg)
16804                 return;
16805
16806         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16807         if (!hdr)
16808                 goto out;
16809
16810         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16811             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16812             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16813                 goto out;
16814
16815         if (ft_event->ies &&
16816             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16817                 goto out;
16818         if (ft_event->ric_ies &&
16819             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16820                     ft_event->ric_ies))
16821                 goto out;
16822
16823         genlmsg_end(msg, hdr);
16824
16825         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16826                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16827         return;
16828  out:
16829         nlmsg_free(msg);
16830 }
16831 EXPORT_SYMBOL(cfg80211_ft_event);
16832
16833 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16834 {
16835         struct cfg80211_registered_device *rdev;
16836         struct sk_buff *msg;
16837         void *hdr;
16838         u32 nlportid;
16839
16840         rdev = wiphy_to_rdev(wdev->wiphy);
16841         if (!rdev->crit_proto_nlportid)
16842                 return;
16843
16844         nlportid = rdev->crit_proto_nlportid;
16845         rdev->crit_proto_nlportid = 0;
16846
16847         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16848         if (!msg)
16849                 return;
16850
16851         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16852         if (!hdr)
16853                 goto nla_put_failure;
16854
16855         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16856             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16857                               NL80211_ATTR_PAD))
16858                 goto nla_put_failure;
16859
16860         genlmsg_end(msg, hdr);
16861
16862         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16863         return;
16864
16865  nla_put_failure:
16866         nlmsg_free(msg);
16867 }
16868 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16869
16870 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16871 {
16872         struct wiphy *wiphy = wdev->wiphy;
16873         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16874         struct sk_buff *msg;
16875         void *hdr;
16876
16877         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16878         if (!msg)
16879                 return;
16880
16881         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16882         if (!hdr)
16883                 goto out;
16884
16885         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16886             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16887             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16888                               NL80211_ATTR_PAD))
16889                 goto out;
16890
16891         genlmsg_end(msg, hdr);
16892
16893         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16894                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16895         return;
16896  out:
16897         nlmsg_free(msg);
16898 }
16899
16900 int cfg80211_external_auth_request(struct net_device *dev,
16901                                    struct cfg80211_external_auth_params *params,
16902                                    gfp_t gfp)
16903 {
16904         struct wireless_dev *wdev = dev->ieee80211_ptr;
16905         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16906         struct sk_buff *msg;
16907         void *hdr;
16908
16909         if (!wdev->conn_owner_nlportid)
16910                 return -EINVAL;
16911
16912         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16913         if (!msg)
16914                 return -ENOMEM;
16915
16916         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16917         if (!hdr)
16918                 goto nla_put_failure;
16919
16920         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16921             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16922             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16923             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16924                         params->action) ||
16925             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16926             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16927                     params->ssid.ssid))
16928                 goto nla_put_failure;
16929
16930         genlmsg_end(msg, hdr);
16931         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16932                         wdev->conn_owner_nlportid);
16933         return 0;
16934
16935  nla_put_failure:
16936         nlmsg_free(msg);
16937         return -ENOBUFS;
16938 }
16939 EXPORT_SYMBOL(cfg80211_external_auth_request);
16940
16941 void cfg80211_update_owe_info_event(struct net_device *netdev,
16942                                     struct cfg80211_update_owe_info *owe_info,
16943                                     gfp_t gfp)
16944 {
16945         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16946         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16947         struct sk_buff *msg;
16948         void *hdr;
16949
16950         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16951
16952         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16953         if (!msg)
16954                 return;
16955
16956         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16957         if (!hdr)
16958                 goto nla_put_failure;
16959
16960         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16961             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16962             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16963                 goto nla_put_failure;
16964
16965         if (!owe_info->ie_len ||
16966             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16967                 goto nla_put_failure;
16968
16969         genlmsg_end(msg, hdr);
16970
16971         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16972                                 NL80211_MCGRP_MLME, gfp);
16973         return;
16974
16975 nla_put_failure:
16976         genlmsg_cancel(msg, hdr);
16977         nlmsg_free(msg);
16978 }
16979 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16980
16981 /* initialisation/exit functions */
16982
16983 int __init nl80211_init(void)
16984 {
16985         int err;
16986
16987         err = genl_register_family(&nl80211_fam);
16988         if (err)
16989                 return err;
16990
16991         err = netlink_register_notifier(&nl80211_netlink_notifier);
16992         if (err)
16993                 goto err_out;
16994
16995         return 0;
16996  err_out:
16997         genl_unregister_family(&nl80211_fam);
16998         return err;
16999 }
17000
17001 void nl80211_exit(void)
17002 {
17003         netlink_unregister_notifier(&nl80211_netlink_notifier);
17004         genl_unregister_family(&nl80211_fam);
17005 }