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_ie_attr(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
 211         for_each_element(elem, data, len) {
 212                 /* nothing */
 213         }
 214
 215         if (for_each_element_completed(elem, data, len))
 216                 return 0;
 217
 218         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 219         return -EINVAL;
 220 }
 221
 222 /* policy for the attributes */
 223 static const struct nla_policy
 224 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 225         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 226         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 227                                         .len = U8_MAX },
 228         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 229                                              .len = U8_MAX },
 230 };
 231
 232 static const struct nla_policy
 233 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 234         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 235         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 236         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 237                 NLA_POLICY_MAX(NLA_U8, 15),
 238         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 239         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 240                 NLA_POLICY_MAX(NLA_U8, 15),
 241         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 242                 NLA_POLICY_MAX(NLA_U8, 31),
 243         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 244         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 245         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 246 };
 247
 248 static const struct nla_policy
 249 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 250         [NL80211_PMSR_TYPE_FTM] =
 251                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 252 };
 253
 254 static const struct nla_policy
 255 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 256         [NL80211_PMSR_REQ_ATTR_DATA] =
 257                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 258         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 259 };
 260
 261 static const struct nla_policy
 262 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 263         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 264         /*
 265          * we could specify this again to be the top-level policy,
 266          * but that would open us up to recursion problems ...
 267          */
 268         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 269         [NL80211_PMSR_PEER_ATTR_REQ] =
 270                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 271         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 272 };
 273
 274 static const struct nla_policy
 275 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 276         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 277         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 278         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 279         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 280         [NL80211_PMSR_ATTR_PEERS] =
 281                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 282 };
 283
 284 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 285         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 286         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 287                                       .len = 20-1 },
 288         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 289
 290         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 291         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 292         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 293         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 294         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 295
 296         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 297         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 298         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 300         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 301         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 302
 303         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 304         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 305         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 306
 307         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 308         [NL80211_ATTR_PREV_BSSID] = {
 309                 .type = NLA_EXACT_LEN_WARN,
 310                 .len = ETH_ALEN
 311         },
 312
 313         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 315                                     .len = WLAN_MAX_KEY_LEN },
 316         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 317         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 318         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 319         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 320         [NL80211_ATTR_KEY_TYPE] =
 321                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 322
 323         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 324         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 325         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 326                                        .len = IEEE80211_MAX_DATA_LEN },
 327         [NL80211_ATTR_BEACON_TAIL] =
 328                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 329                                        IEEE80211_MAX_DATA_LEN),
 330         [NL80211_ATTR_STA_AID] =
 331                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 332         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 333         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 334         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 335                                                .len = NL80211_MAX_SUPP_RATES },
 336         [NL80211_ATTR_STA_PLINK_ACTION] =
 337                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 338         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 339                 NLA_POLICY_RANGE(NLA_U8,
 340                                  NL80211_TX_POWER_AUTOMATIC,
 341                                  NL80211_TX_POWER_FIXED),
 342         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 343         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 344         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 345         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 346                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 347         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 348
 349         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 350         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 351
 352         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 353         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 354         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 355         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 356                                            .len = NL80211_MAX_SUPP_RATES },
 357         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 358
 359         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 360         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 361
 362         [NL80211_ATTR_HT_CAPABILITY] = {
 363                 .type = NLA_EXACT_LEN_WARN,
 364                 .len = NL80211_HT_CAPABILITY_LEN
 365         },
 366
 367         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 368         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 369                                                    validate_ie_attr,
 370                                                    IEEE80211_MAX_DATA_LEN),
 371         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 372         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 373
 374         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 375                                 .len = IEEE80211_MAX_SSID_LEN },
 376         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 377         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 378         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 379         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 380         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 381                                                   NL80211_MFP_NO,
 382                                                   NL80211_MFP_OPTIONAL),
 383         [NL80211_ATTR_STA_FLAGS2] = {
 384                 .len = sizeof(struct nl80211_sta_flag_update),
 385         },
 386         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 387         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 388         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 389         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 390         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 391         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 392         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 393         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 394         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 395         [NL80211_ATTR_PMKID] = {
 396                 .type = NLA_EXACT_LEN_WARN,
 397                 .len = WLAN_PMKID_LEN
 398         },
 399         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 400         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 401         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 402         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 403                                  .len = IEEE80211_MAX_DATA_LEN },
 404         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 405         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 406                                                    NL80211_PS_DISABLED,
 407                                                    NL80211_PS_ENABLED),
 408         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 409         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 410         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 411         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 412         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 413         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 414         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 415         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 416         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 417         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 418         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 419         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 420         [NL80211_ATTR_STA_PLINK_STATE] =
 421                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 422         [NL80211_ATTR_MESH_PEER_AID] =
 423                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 424         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 425         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 426         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 427         [NL80211_ATTR_HIDDEN_SSID] =
 428                 NLA_POLICY_RANGE(NLA_U32,
 429                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 430                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 431         [NL80211_ATTR_IE_PROBE_RESP] =
 432                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 433                                        IEEE80211_MAX_DATA_LEN),
 434         [NL80211_ATTR_IE_ASSOC_RESP] =
 435                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 436                                        IEEE80211_MAX_DATA_LEN),
 437         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 438         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 439         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 440         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 441         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 442         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 443         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 444         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 445         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 446         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 447         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 448                                       .len = IEEE80211_MAX_DATA_LEN },
 449         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 450         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 451         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 452                 .len = NL80211_HT_CAPABILITY_LEN
 453         },
 454         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 455         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 456         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 457         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 458         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 459         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 460         [NL80211_ATTR_VHT_CAPABILITY] = {
 461                 .type = NLA_EXACT_LEN_WARN,
 462                 .len = NL80211_VHT_CAPABILITY_LEN
 463         },
 464         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 465         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 466         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 467         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 468                 NLA_POLICY_RANGE(NLA_U32,
 469                                  NL80211_MESH_POWER_UNKNOWN + 1,
 470                                  NL80211_MESH_POWER_MAX),
 471         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 472         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 473         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 474         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 475         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 476         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 477         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 478                 .len = NL80211_VHT_CAPABILITY_LEN,
 479         },
 480         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 481         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 482                                   .len = IEEE80211_MAX_DATA_LEN },
 483         [NL80211_ATTR_PEER_AID] =
 484                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 485         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 486         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 487         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 488         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 489         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 490         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 491         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 492         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 493         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 494         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 495         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 496         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 497         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 498                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 499         [NL80211_ATTR_MAC_HINT] = {
 500                 .type = NLA_EXACT_LEN_WARN,
 501                 .len = ETH_ALEN
 502         },
 503         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 504         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 505         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 507         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 508         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 509         [NL80211_ATTR_USER_PRIO] =
 510                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 511         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 512         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 513         [NL80211_ATTR_MAC_MASK] = {
 514                 .type = NLA_EXACT_LEN_WARN,
 515                 .len = ETH_ALEN
 516         },
 517         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 519         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 520         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 521         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 522         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 523         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 524                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 525         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 526                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 527         },
 528         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 529                 .type = NLA_EXACT_LEN_WARN,
 530                 .len = ETH_ALEN
 531         },
 532         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 533         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 534         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 535         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 536                                     .len = FILS_MAX_KEK_LEN },
 537         [NL80211_ATTR_FILS_NONCES] = {
 538                 .type = NLA_EXACT_LEN_WARN,
 539                 .len = 2 * FILS_NONCE_LEN
 540         },
 541         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 542         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 543         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 544         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 545                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 546         },
 547         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 548         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 549                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 550         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 551                                           .len = FILS_ERP_MAX_REALM_LEN },
 552         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 553         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 554                                         .len = FILS_ERP_MAX_RRK_LEN },
 555         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 556         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 557         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 558         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 559
 560         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 561         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 562         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 563         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 564                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 565
 566         [NL80211_ATTR_FTM_RESPONDER] = {
 567                 .type = NLA_NESTED,
 568                 .validation_data = nl80211_ftm_responder_policy,
 569         },
 570         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 571         [NL80211_ATTR_PEER_MEASUREMENTS] =
 572                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 573         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 574 };
 575
 576 /* policy for the key attributes */
 577 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 578         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 579         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 580         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 581         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 582         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 583         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 584         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 585         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 586         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 587 };
 588
 589 /* policy for the key default flags */
 590 static const struct nla_policy
 591 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 592         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 593         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 594 };
 595
 596 #ifdef CONFIG_PM
 597 /* policy for WoWLAN attributes */
 598 static const struct nla_policy
 599 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 600         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 601         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 602         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 603         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 604         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 605         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 606         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 607         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 608         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 609         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 610 };
 611
 612 static const struct nla_policy
 613 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 614         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 615         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 616         [NL80211_WOWLAN_TCP_DST_MAC] = {
 617                 .type = NLA_EXACT_LEN_WARN,
 618                 .len = ETH_ALEN
 619         },
 620         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 621         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 622         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 623         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 624                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 625         },
 626         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 627                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 628         },
 629         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 630         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 631         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 632 };
 633 #endif /* CONFIG_PM */
 634
 635 /* policy for coalesce rule attributes */
 636 static const struct nla_policy
 637 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 638         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 639         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 640                 NLA_POLICY_RANGE(NLA_U32,
 641                                  NL80211_COALESCE_CONDITION_MATCH,
 642                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 643         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 644 };
 645
 646 /* policy for GTK rekey offload attributes */
 647 static const struct nla_policy
 648 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 649         [NL80211_REKEY_DATA_KEK] = { .type = NLA_EXACT_LEN_WARN, .len = NL80211_KEK_LEN },
 650         [NL80211_REKEY_DATA_KCK] = { .type = NLA_EXACT_LEN_WARN, .len = NL80211_KCK_LEN },
 651         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 652                 .type = NLA_EXACT_LEN_WARN,
 653                 .len = NL80211_REPLAY_CTR_LEN
 654         },
 655 };
 656
 657 static const struct nla_policy
 658 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 659         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 660         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 661         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 662 };
 663
 664 static const struct nla_policy
 665 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 666         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 667                                                  .len = IEEE80211_MAX_SSID_LEN },
 668         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 669                 .type = NLA_EXACT_LEN_WARN,
 670                 .len = ETH_ALEN
 671         },
 672         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 673         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 674                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 675 };
 676
 677 static const struct nla_policy
 678 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 679         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 680         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 681 };
 682
 683 static const struct nla_policy
 684 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 685         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 686         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 687         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 688                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 689         },
 690 };
 691
 692 /* policy for NAN function attributes */
 693 static const struct nla_policy
 694 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 695         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 696         [NL80211_NAN_FUNC_SERVICE_ID] = {
 697                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 698         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 699         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 700         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 701         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 702         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 703         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 704                 .type = NLA_EXACT_LEN_WARN,
 705                 .len = ETH_ALEN
 706         },
 707         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 708         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 709         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 710                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 711         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 712         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 713         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 714         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 715         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 716 };
 717
 718 /* policy for Service Response Filter attributes */
 719 static const struct nla_policy
 720 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 721         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 722         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 723                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 724         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 725         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 726 };
 727
 728 /* policy for packet pattern attributes */
 729 static const struct nla_policy
 730 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 731         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 732         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 733         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 734 };
 735
 736 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 737                               struct cfg80211_registered_device **rdev,
 738                               struct wireless_dev **wdev)
 739 {
 740         int err;
 741
 742         if (!cb->args[0]) {
 743                 err = nlmsg_parse_deprecated(cb->nlh,
 744                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 745                                              genl_family_attrbuf(&nl80211_fam),
 746                                              nl80211_fam.maxattr,
 747                                              nl80211_policy, NULL);
 748                 if (err)
 749                         return err;
 750
 751                 *wdev = __cfg80211_wdev_from_attrs(
 752                                         sock_net(cb->skb->sk),
 753                                         genl_family_attrbuf(&nl80211_fam));
 754                 if (IS_ERR(*wdev))
 755                         return PTR_ERR(*wdev);
 756                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 757                 /* 0 is the first index - add 1 to parse only once */
 758                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 759                 cb->args[1] = (*wdev)->identifier;
 760         } else {
 761                 /* subtract the 1 again here */
 762                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 763                 struct wireless_dev *tmp;
 764
 765                 if (!wiphy)
 766                         return -ENODEV;
 767                 *rdev = wiphy_to_rdev(wiphy);
 768                 *wdev = NULL;
 769
 770                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 771                         if (tmp->identifier == cb->args[1]) {
 772                                 *wdev = tmp;
 773                                 break;
 774                         }
 775                 }
 776
 777                 if (!*wdev)
 778                         return -ENODEV;
 779         }
 780
 781         return 0;
 782 }
 783
 784 /* message building helper */
 785 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 786                      int flags, u8 cmd)
 787 {
 788         /* since there is no private header just add the generic one */
 789         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 790 }
 791
 792 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 793                                      const struct ieee80211_reg_rule *rule)
 794 {
 795         int j;
 796         struct nlattr *nl_wmm_rules =
 797                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 798
 799         if (!nl_wmm_rules)
 800                 goto nla_put_failure;
 801
 802         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 803                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 804
 805                 if (!nl_wmm_rule)
 806                         goto nla_put_failure;
 807
 808                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 809                                 rule->wmm_rule.client[j].cw_min) ||
 810                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 811                                 rule->wmm_rule.client[j].cw_max) ||
 812                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 813                                rule->wmm_rule.client[j].aifsn) ||
 814                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 815                                 rule->wmm_rule.client[j].cot))
 816                         goto nla_put_failure;
 817
 818                 nla_nest_end(msg, nl_wmm_rule);
 819         }
 820         nla_nest_end(msg, nl_wmm_rules);
 821
 822         return 0;
 823
 824 nla_put_failure:
 825         return -ENOBUFS;
 826 }
 827
 828 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 829                                    struct ieee80211_channel *chan,
 830                                    bool large)
 831 {
 832         /* Some channels must be completely excluded from the
 833          * list to protect old user-space tools from breaking
 834          */
 835         if (!large && chan->flags &
 836             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 837                 return 0;
 838
 839         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 840                         chan->center_freq))
 841                 goto nla_put_failure;
 842
 843         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 844             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 845                 goto nla_put_failure;
 846         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 847                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 848                         goto nla_put_failure;
 849                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 850                         goto nla_put_failure;
 851         }
 852         if (chan->flags & IEEE80211_CHAN_RADAR) {
 853                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 854                         goto nla_put_failure;
 855                 if (large) {
 856                         u32 time;
 857
 858                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 859
 860                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 861                                         chan->dfs_state))
 862                                 goto nla_put_failure;
 863                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 864                                         time))
 865                                 goto nla_put_failure;
 866                         if (nla_put_u32(msg,
 867                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 868                                         chan->dfs_cac_ms))
 869                                 goto nla_put_failure;
 870                 }
 871         }
 872
 873         if (large) {
 874                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 875                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 876                         goto nla_put_failure;
 877                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 878                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 879                         goto nla_put_failure;
 880                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 881                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 882                         goto nla_put_failure;
 883                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 884                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 885                         goto nla_put_failure;
 886                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 887                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 888                         goto nla_put_failure;
 889                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 890                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 891                         goto nla_put_failure;
 892                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 893                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 894                         goto nla_put_failure;
 895                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 896                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 897                         goto nla_put_failure;
 898         }
 899
 900         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 901                         DBM_TO_MBM(chan->max_power)))
 902                 goto nla_put_failure;
 903
 904         if (large) {
 905                 const struct ieee80211_reg_rule *rule =
 906                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 907
 908                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 909                         if (nl80211_msg_put_wmm_rules(msg, rule))
 910                                 goto nla_put_failure;
 911                 }
 912         }
 913
 914         return 0;
 915
 916  nla_put_failure:
 917         return -ENOBUFS;
 918 }
 919
 920 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 921                                   struct cfg80211_txq_stats *txqstats,
 922                                   int attrtype)
 923 {
 924         struct nlattr *txqattr;
 925
 926 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 927         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 928             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 929                 return false;                                             \
 930         } while (0)
 931
 932         txqattr = nla_nest_start_noflag(msg, attrtype);
 933         if (!txqattr)
 934                 return false;
 935
 936         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 937         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 938         PUT_TXQVAL_U32(FLOWS, flows);
 939         PUT_TXQVAL_U32(DROPS, drops);
 940         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 941         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 942         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 943         PUT_TXQVAL_U32(COLLISIONS, collisions);
 944         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 945         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 946         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 947         nla_nest_end(msg, txqattr);
 948
 949 #undef PUT_TXQVAL_U32
 950         return true;
 951 }
 952
 953 /* netlink command implementations */
 954
 955 struct key_parse {
 956         struct key_params p;
 957         int idx;
 958         int type;
 959         bool def, defmgmt;
 960         bool def_uni, def_multi;
 961 };
 962
 963 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 964                                  struct key_parse *k)
 965 {
 966         struct nlattr *tb[NL80211_KEY_MAX + 1];
 967         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
 968                                               nl80211_key_policy,
 969                                               info->extack);
 970         if (err)
 971                 return err;
 972
 973         k->def = !!tb[NL80211_KEY_DEFAULT];
 974         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 975
 976         if (k->def) {
 977                 k->def_uni = true;
 978                 k->def_multi = true;
 979         }
 980         if (k->defmgmt)
 981                 k->def_multi = true;
 982
 983         if (tb[NL80211_KEY_IDX])
 984                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 985
 986         if (tb[NL80211_KEY_DATA]) {
 987                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 988                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 989         }
 990
 991         if (tb[NL80211_KEY_SEQ]) {
 992                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 993                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 994         }
 995
 996         if (tb[NL80211_KEY_CIPHER])
 997                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 998
 999         if (tb[NL80211_KEY_TYPE])
1000                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1001
1002         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1003                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1004
1005                 err = nla_parse_nested_deprecated(kdt,
1006                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1007                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1008                                                   nl80211_key_default_policy,
1009                                                   info->extack);
1010                 if (err)
1011                         return err;
1012
1013                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1014                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1015         }
1016
1017         if (tb[NL80211_KEY_MODE])
1018                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1019
1020         return 0;
1021 }
1022
1023 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1024 {
1025         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1026                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1027                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1028         }
1029
1030         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1031                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1032                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1033         }
1034
1035         if (info->attrs[NL80211_ATTR_KEY_IDX])
1036                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1037
1038         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1039                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1040
1041         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1042         k->defmgmt = !!info->attrs[NL80211_ATTR_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 (info->attrs[NL80211_ATTR_KEY_TYPE])
1052                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1053
1054         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1055                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1056                 int err = nla_parse_nested_deprecated(kdt,
1057                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1058                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1059                                                       nl80211_key_default_policy,
1060                                                       info->extack);
1061                 if (err)
1062                         return err;
1063
1064                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1065                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1066         }
1067
1068         return 0;
1069 }
1070
1071 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1072 {
1073         int err;
1074
1075         memset(k, 0, sizeof(*k));
1076         k->idx = -1;
1077         k->type = -1;
1078
1079         if (info->attrs[NL80211_ATTR_KEY])
1080                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1081         else
1082                 err = nl80211_parse_key_old(info, k);
1083
1084         if (err)
1085                 return err;
1086
1087         if (k->def && k->defmgmt) {
1088                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1089                 return -EINVAL;
1090         }
1091
1092         if (k->defmgmt) {
1093                 if (k->def_uni || !k->def_multi) {
1094                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1095                         return -EINVAL;
1096                 }
1097         }
1098
1099         if (k->idx != -1) {
1100                 if (k->defmgmt) {
1101                         if (k->idx < 4 || k->idx > 5) {
1102                                 GENL_SET_ERR_MSG(info,
1103                                                  "defmgmt key idx not 4 or 5");
1104                                 return -EINVAL;
1105                         }
1106                 } else if (k->def) {
1107                         if (k->idx < 0 || k->idx > 3) {
1108                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1109                                 return -EINVAL;
1110                         }
1111                 } else {
1112                         if (k->idx < 0 || k->idx > 5) {
1113                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1114                                 return -EINVAL;
1115                         }
1116                 }
1117         }
1118
1119         return 0;
1120 }
1121
1122 static struct cfg80211_cached_keys *
1123 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1124                        struct genl_info *info, bool *no_ht)
1125 {
1126         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1127         struct key_parse parse;
1128         struct nlattr *key;
1129         struct cfg80211_cached_keys *result;
1130         int rem, err, def = 0;
1131         bool have_key = false;
1132
1133         nla_for_each_nested(key, keys, rem) {
1134                 have_key = true;
1135                 break;
1136         }
1137
1138         if (!have_key)
1139                 return NULL;
1140
1141         result = kzalloc(sizeof(*result), GFP_KERNEL);
1142         if (!result)
1143                 return ERR_PTR(-ENOMEM);
1144
1145         result->def = -1;
1146
1147         nla_for_each_nested(key, keys, rem) {
1148                 memset(&parse, 0, sizeof(parse));
1149                 parse.idx = -1;
1150
1151                 err = nl80211_parse_key_new(info, key, &parse);
1152                 if (err)
1153                         goto error;
1154                 err = -EINVAL;
1155                 if (!parse.p.key)
1156                         goto error;
1157                 if (parse.idx < 0 || parse.idx > 3) {
1158                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1159                         goto error;
1160                 }
1161                 if (parse.def) {
1162                         if (def) {
1163                                 GENL_SET_ERR_MSG(info,
1164                                                  "only one key can be default");
1165                                 goto error;
1166                         }
1167                         def = 1;
1168                         result->def = parse.idx;
1169                         if (!parse.def_uni || !parse.def_multi)
1170                                 goto error;
1171                 } else if (parse.defmgmt)
1172                         goto error;
1173                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1174                                                      parse.idx, false, NULL);
1175                 if (err)
1176                         goto error;
1177                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1178                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1179                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1180                         err = -EINVAL;
1181                         goto error;
1182                 }
1183                 result->params[parse.idx].cipher = parse.p.cipher;
1184                 result->params[parse.idx].key_len = parse.p.key_len;
1185                 result->params[parse.idx].key = result->data[parse.idx];
1186                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1187
1188                 /* must be WEP key if we got here */
1189                 if (no_ht)
1190                         *no_ht = true;
1191         }
1192
1193         if (result->def < 0) {
1194                 err = -EINVAL;
1195                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1196                 goto error;
1197         }
1198
1199         return result;
1200  error:
1201         kfree(result);
1202         return ERR_PTR(err);
1203 }
1204
1205 static int nl80211_key_allowed(struct wireless_dev *wdev)
1206 {
1207         ASSERT_WDEV_LOCK(wdev);
1208
1209         switch (wdev->iftype) {
1210         case NL80211_IFTYPE_AP:
1211         case NL80211_IFTYPE_AP_VLAN:
1212         case NL80211_IFTYPE_P2P_GO:
1213         case NL80211_IFTYPE_MESH_POINT:
1214                 break;
1215         case NL80211_IFTYPE_ADHOC:
1216         case NL80211_IFTYPE_STATION:
1217         case NL80211_IFTYPE_P2P_CLIENT:
1218                 if (!wdev->current_bss)
1219                         return -ENOLINK;
1220                 break;
1221         case NL80211_IFTYPE_UNSPECIFIED:
1222         case NL80211_IFTYPE_OCB:
1223         case NL80211_IFTYPE_MONITOR:
1224         case NL80211_IFTYPE_NAN:
1225         case NL80211_IFTYPE_P2P_DEVICE:
1226         case NL80211_IFTYPE_WDS:
1227         case NUM_NL80211_IFTYPES:
1228                 return -EINVAL;
1229         }
1230
1231         return 0;
1232 }
1233
1234 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1235                                                         struct nlattr *tb)
1236 {
1237         struct ieee80211_channel *chan;
1238
1239         if (tb == NULL)
1240                 return NULL;
1241         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1242         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1243                 return NULL;
1244         return chan;
1245 }
1246
1247 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1248 {
1249         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1250         int i;
1251
1252         if (!nl_modes)
1253                 goto nla_put_failure;
1254
1255         i = 0;
1256         while (ifmodes) {
1257                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1258                         goto nla_put_failure;
1259                 ifmodes >>= 1;
1260                 i++;
1261         }
1262
1263         nla_nest_end(msg, nl_modes);
1264         return 0;
1265
1266 nla_put_failure:
1267         return -ENOBUFS;
1268 }
1269
1270 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1271                                           struct sk_buff *msg,
1272                                           bool large)
1273 {
1274         struct nlattr *nl_combis;
1275         int i, j;
1276
1277         nl_combis = nla_nest_start_noflag(msg,
1278                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1279         if (!nl_combis)
1280                 goto nla_put_failure;
1281
1282         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1283                 const struct ieee80211_iface_combination *c;
1284                 struct nlattr *nl_combi, *nl_limits;
1285
1286                 c = &wiphy->iface_combinations[i];
1287
1288                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1289                 if (!nl_combi)
1290                         goto nla_put_failure;
1291
1292                 nl_limits = nla_nest_start_noflag(msg,
1293                                                   NL80211_IFACE_COMB_LIMITS);
1294                 if (!nl_limits)
1295                         goto nla_put_failure;
1296
1297                 for (j = 0; j < c->n_limits; j++) {
1298                         struct nlattr *nl_limit;
1299
1300                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1301                         if (!nl_limit)
1302                                 goto nla_put_failure;
1303                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1304                                         c->limits[j].max))
1305                                 goto nla_put_failure;
1306                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1307                                                 c->limits[j].types))
1308                                 goto nla_put_failure;
1309                         nla_nest_end(msg, nl_limit);
1310                 }
1311
1312                 nla_nest_end(msg, nl_limits);
1313
1314                 if (c->beacon_int_infra_match &&
1315                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1316                         goto nla_put_failure;
1317                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1318                                 c->num_different_channels) ||
1319                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1320                                 c->max_interfaces))
1321                         goto nla_put_failure;
1322                 if (large &&
1323                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1324                                 c->radar_detect_widths) ||
1325                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1326                                 c->radar_detect_regions)))
1327                         goto nla_put_failure;
1328                 if (c->beacon_int_min_gcd &&
1329                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1330                                 c->beacon_int_min_gcd))
1331                         goto nla_put_failure;
1332
1333                 nla_nest_end(msg, nl_combi);
1334         }
1335
1336         nla_nest_end(msg, nl_combis);
1337
1338         return 0;
1339 nla_put_failure:
1340         return -ENOBUFS;
1341 }
1342
1343 #ifdef CONFIG_PM
1344 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1345                                         struct sk_buff *msg)
1346 {
1347         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1348         struct nlattr *nl_tcp;
1349
1350         if (!tcp)
1351                 return 0;
1352
1353         nl_tcp = nla_nest_start_noflag(msg,
1354                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1355         if (!nl_tcp)
1356                 return -ENOBUFS;
1357
1358         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1359                         tcp->data_payload_max))
1360                 return -ENOBUFS;
1361
1362         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1363                         tcp->data_payload_max))
1364                 return -ENOBUFS;
1365
1366         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1367                 return -ENOBUFS;
1368
1369         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1370                                 sizeof(*tcp->tok), tcp->tok))
1371                 return -ENOBUFS;
1372
1373         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1374                         tcp->data_interval_max))
1375                 return -ENOBUFS;
1376
1377         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1378                         tcp->wake_payload_max))
1379                 return -ENOBUFS;
1380
1381         nla_nest_end(msg, nl_tcp);
1382         return 0;
1383 }
1384
1385 static int nl80211_send_wowlan(struct sk_buff *msg,
1386                                struct cfg80211_registered_device *rdev,
1387                                bool large)
1388 {
1389         struct nlattr *nl_wowlan;
1390
1391         if (!rdev->wiphy.wowlan)
1392                 return 0;
1393
1394         nl_wowlan = nla_nest_start_noflag(msg,
1395                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1396         if (!nl_wowlan)
1397                 return -ENOBUFS;
1398
1399         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1400              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1401             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1402              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1403             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1404              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1405             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1406              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1407             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1408              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1409             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1410              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1411             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1412              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1413             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1414              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1415                 return -ENOBUFS;
1416
1417         if (rdev->wiphy.wowlan->n_patterns) {
1418                 struct nl80211_pattern_support pat = {
1419                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1420                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1421                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1422                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1423                 };
1424
1425                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1426                             sizeof(pat), &pat))
1427                         return -ENOBUFS;
1428         }
1429
1430         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1431             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1432                         rdev->wiphy.wowlan->max_nd_match_sets))
1433                 return -ENOBUFS;
1434
1435         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1436                 return -ENOBUFS;
1437
1438         nla_nest_end(msg, nl_wowlan);
1439
1440         return 0;
1441 }
1442 #endif
1443
1444 static int nl80211_send_coalesce(struct sk_buff *msg,
1445                                  struct cfg80211_registered_device *rdev)
1446 {
1447         struct nl80211_coalesce_rule_support rule;
1448
1449         if (!rdev->wiphy.coalesce)
1450                 return 0;
1451
1452         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1453         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1454         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1455         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1456         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1457         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1458
1459         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1460                 return -ENOBUFS;
1461
1462         return 0;
1463 }
1464
1465 static int
1466 nl80211_send_iftype_data(struct sk_buff *msg,
1467                          const struct ieee80211_sband_iftype_data *iftdata)
1468 {
1469         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1470
1471         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1472                                 iftdata->types_mask))
1473                 return -ENOBUFS;
1474
1475         if (he_cap->has_he) {
1476                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1477                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1478                             he_cap->he_cap_elem.mac_cap_info) ||
1479                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1480                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1481                             he_cap->he_cap_elem.phy_cap_info) ||
1482                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1483                             sizeof(he_cap->he_mcs_nss_supp),
1484                             &he_cap->he_mcs_nss_supp) ||
1485                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1486                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1487                         return -ENOBUFS;
1488         }
1489
1490         return 0;
1491 }
1492
1493 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1494                                       struct ieee80211_supported_band *sband)
1495 {
1496         struct nlattr *nl_rates, *nl_rate;
1497         struct ieee80211_rate *rate;
1498         int i;
1499
1500         /* add HT info */
1501         if (sband->ht_cap.ht_supported &&
1502             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1503                      sizeof(sband->ht_cap.mcs),
1504                      &sband->ht_cap.mcs) ||
1505              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1506                          sband->ht_cap.cap) ||
1507              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1508                         sband->ht_cap.ampdu_factor) ||
1509              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1510                         sband->ht_cap.ampdu_density)))
1511                 return -ENOBUFS;
1512
1513         /* add VHT info */
1514         if (sband->vht_cap.vht_supported &&
1515             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1516                      sizeof(sband->vht_cap.vht_mcs),
1517                      &sband->vht_cap.vht_mcs) ||
1518              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1519                          sband->vht_cap.cap)))
1520                 return -ENOBUFS;
1521
1522         if (sband->n_iftype_data) {
1523                 struct nlattr *nl_iftype_data =
1524                         nla_nest_start_noflag(msg,
1525                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1526                 int err;
1527
1528                 if (!nl_iftype_data)
1529                         return -ENOBUFS;
1530
1531                 for (i = 0; i < sband->n_iftype_data; i++) {
1532                         struct nlattr *iftdata;
1533
1534                         iftdata = nla_nest_start_noflag(msg, i + 1);
1535                         if (!iftdata)
1536                                 return -ENOBUFS;
1537
1538                         err = nl80211_send_iftype_data(msg,
1539                                                        &sband->iftype_data[i]);
1540                         if (err)
1541                                 return err;
1542
1543                         nla_nest_end(msg, iftdata);
1544                 }
1545
1546                 nla_nest_end(msg, nl_iftype_data);
1547         }
1548
1549         /* add bitrates */
1550         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1551         if (!nl_rates)
1552                 return -ENOBUFS;
1553
1554         for (i = 0; i < sband->n_bitrates; i++) {
1555                 nl_rate = nla_nest_start_noflag(msg, i);
1556                 if (!nl_rate)
1557                         return -ENOBUFS;
1558
1559                 rate = &sband->bitrates[i];
1560                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1561                                 rate->bitrate))
1562                         return -ENOBUFS;
1563                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1564                     nla_put_flag(msg,
1565                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1566                         return -ENOBUFS;
1567
1568                 nla_nest_end(msg, nl_rate);
1569         }
1570
1571         nla_nest_end(msg, nl_rates);
1572
1573         return 0;
1574 }
1575
1576 static int
1577 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1578                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1579 {
1580         u16 stypes;
1581         struct nlattr *nl_ftypes, *nl_ifs;
1582         enum nl80211_iftype ift;
1583         int i;
1584
1585         if (!mgmt_stypes)
1586                 return 0;
1587
1588         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1589         if (!nl_ifs)
1590                 return -ENOBUFS;
1591
1592         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1593                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1594                 if (!nl_ftypes)
1595                         return -ENOBUFS;
1596                 i = 0;
1597                 stypes = mgmt_stypes[ift].tx;
1598                 while (stypes) {
1599                         if ((stypes & 1) &&
1600                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1601                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1602                                 return -ENOBUFS;
1603                         stypes >>= 1;
1604                         i++;
1605                 }
1606                 nla_nest_end(msg, nl_ftypes);
1607         }
1608
1609         nla_nest_end(msg, nl_ifs);
1610
1611         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1612         if (!nl_ifs)
1613                 return -ENOBUFS;
1614
1615         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1616                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1617                 if (!nl_ftypes)
1618                         return -ENOBUFS;
1619                 i = 0;
1620                 stypes = mgmt_stypes[ift].rx;
1621                 while (stypes) {
1622                         if ((stypes & 1) &&
1623                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1624                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1625                                 return -ENOBUFS;
1626                         stypes >>= 1;
1627                         i++;
1628                 }
1629                 nla_nest_end(msg, nl_ftypes);
1630         }
1631         nla_nest_end(msg, nl_ifs);
1632
1633         return 0;
1634 }
1635
1636 #define CMD(op, n)                                                      \
1637          do {                                                           \
1638                 if (rdev->ops->op) {                                    \
1639                         i++;                                            \
1640                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1641                                 goto nla_put_failure;                   \
1642                 }                                                       \
1643         } while (0)
1644
1645 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1646                                         struct sk_buff *msg)
1647 {
1648         int i = 0;
1649
1650         /*
1651          * do *NOT* add anything into this function, new things need to be
1652          * advertised only to new versions of userspace that can deal with
1653          * the split (and they can't possibly care about new features...
1654          */
1655         CMD(add_virtual_intf, NEW_INTERFACE);
1656         CMD(change_virtual_intf, SET_INTERFACE);
1657         CMD(add_key, NEW_KEY);
1658         CMD(start_ap, START_AP);
1659         CMD(add_station, NEW_STATION);
1660         CMD(add_mpath, NEW_MPATH);
1661         CMD(update_mesh_config, SET_MESH_CONFIG);
1662         CMD(change_bss, SET_BSS);
1663         CMD(auth, AUTHENTICATE);
1664         CMD(assoc, ASSOCIATE);
1665         CMD(deauth, DEAUTHENTICATE);
1666         CMD(disassoc, DISASSOCIATE);
1667         CMD(join_ibss, JOIN_IBSS);
1668         CMD(join_mesh, JOIN_MESH);
1669         CMD(set_pmksa, SET_PMKSA);
1670         CMD(del_pmksa, DEL_PMKSA);
1671         CMD(flush_pmksa, FLUSH_PMKSA);
1672         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1673                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1674         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1675         CMD(mgmt_tx, FRAME);
1676         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1677         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1678                 i++;
1679                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1680                         goto nla_put_failure;
1681         }
1682         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1683             rdev->ops->join_mesh) {
1684                 i++;
1685                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1686                         goto nla_put_failure;
1687         }
1688         CMD(set_wds_peer, SET_WDS_PEER);
1689         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1690                 CMD(tdls_mgmt, TDLS_MGMT);
1691                 CMD(tdls_oper, TDLS_OPER);
1692         }
1693         if (rdev->wiphy.max_sched_scan_reqs)
1694                 CMD(sched_scan_start, START_SCHED_SCAN);
1695         CMD(probe_client, PROBE_CLIENT);
1696         CMD(set_noack_map, SET_NOACK_MAP);
1697         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1698                 i++;
1699                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1700                         goto nla_put_failure;
1701         }
1702         CMD(start_p2p_device, START_P2P_DEVICE);
1703         CMD(set_mcast_rate, SET_MCAST_RATE);
1704 #ifdef CONFIG_NL80211_TESTMODE
1705         CMD(testmode_cmd, TESTMODE);
1706 #endif
1707
1708         if (rdev->ops->connect || rdev->ops->auth) {
1709                 i++;
1710                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1711                         goto nla_put_failure;
1712         }
1713
1714         if (rdev->ops->disconnect || rdev->ops->deauth) {
1715                 i++;
1716                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1717                         goto nla_put_failure;
1718         }
1719
1720         return i;
1721  nla_put_failure:
1722         return -ENOBUFS;
1723 }
1724
1725 static int
1726 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1727                            struct sk_buff *msg)
1728 {
1729         struct nlattr *ftm;
1730
1731         if (!cap->ftm.supported)
1732                 return 0;
1733
1734         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1735         if (!ftm)
1736                 return -ENOBUFS;
1737
1738         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1739                 return -ENOBUFS;
1740         if (cap->ftm.non_asap &&
1741             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1742                 return -ENOBUFS;
1743         if (cap->ftm.request_lci &&
1744             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1745                 return -ENOBUFS;
1746         if (cap->ftm.request_civicloc &&
1747             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1748                 return -ENOBUFS;
1749         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1750                         cap->ftm.preambles))
1751                 return -ENOBUFS;
1752         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1753                         cap->ftm.bandwidths))
1754                 return -ENOBUFS;
1755         if (cap->ftm.max_bursts_exponent >= 0 &&
1756             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1757                         cap->ftm.max_bursts_exponent))
1758                 return -ENOBUFS;
1759         if (cap->ftm.max_ftms_per_burst &&
1760             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1761                         cap->ftm.max_ftms_per_burst))
1762                 return -ENOBUFS;
1763
1764         nla_nest_end(msg, ftm);
1765         return 0;
1766 }
1767
1768 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1769                                   struct sk_buff *msg)
1770 {
1771         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1772         struct nlattr *pmsr, *caps;
1773
1774         if (!cap)
1775                 return 0;
1776
1777         /*
1778          * we don't need to clean up anything here since the caller
1779          * will genlmsg_cancel() if we fail
1780          */
1781
1782         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1783         if (!pmsr)
1784                 return -ENOBUFS;
1785
1786         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1787                 return -ENOBUFS;
1788
1789         if (cap->report_ap_tsf &&
1790             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1791                 return -ENOBUFS;
1792
1793         if (cap->randomize_mac_addr &&
1794             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1795                 return -ENOBUFS;
1796
1797         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1798         if (!caps)
1799                 return -ENOBUFS;
1800
1801         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1802                 return -ENOBUFS;
1803
1804         nla_nest_end(msg, caps);
1805         nla_nest_end(msg, pmsr);
1806
1807         return 0;
1808 }
1809
1810 struct nl80211_dump_wiphy_state {
1811         s64 filter_wiphy;
1812         long start;
1813         long split_start, band_start, chan_start, capa_start;
1814         bool split;
1815 };
1816
1817 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1818                               enum nl80211_commands cmd,
1819                               struct sk_buff *msg, u32 portid, u32 seq,
1820                               int flags, struct nl80211_dump_wiphy_state *state)
1821 {
1822         void *hdr;
1823         struct nlattr *nl_bands, *nl_band;
1824         struct nlattr *nl_freqs, *nl_freq;
1825         struct nlattr *nl_cmds;
1826         enum nl80211_band band;
1827         struct ieee80211_channel *chan;
1828         int i;
1829         const struct ieee80211_txrx_stypes *mgmt_stypes =
1830                                 rdev->wiphy.mgmt_stypes;
1831         u32 features;
1832
1833         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1834         if (!hdr)
1835                 return -ENOBUFS;
1836
1837         if (WARN_ON(!state))
1838                 return -EINVAL;
1839
1840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1841             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1842                            wiphy_name(&rdev->wiphy)) ||
1843             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1844                         cfg80211_rdev_list_generation))
1845                 goto nla_put_failure;
1846
1847         if (cmd != NL80211_CMD_NEW_WIPHY)
1848                 goto finish;
1849
1850         switch (state->split_start) {
1851         case 0:
1852                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1853                                rdev->wiphy.retry_short) ||
1854                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1855                                rdev->wiphy.retry_long) ||
1856                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1857                                 rdev->wiphy.frag_threshold) ||
1858                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1859                                 rdev->wiphy.rts_threshold) ||
1860                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1861                                rdev->wiphy.coverage_class) ||
1862                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1863                                rdev->wiphy.max_scan_ssids) ||
1864                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1865                                rdev->wiphy.max_sched_scan_ssids) ||
1866                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1867                                 rdev->wiphy.max_scan_ie_len) ||
1868                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1869                                 rdev->wiphy.max_sched_scan_ie_len) ||
1870                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1871                                rdev->wiphy.max_match_sets) ||
1872                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1873                                 rdev->wiphy.max_sched_scan_plans) ||
1874                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1875                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1876                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1877                                 rdev->wiphy.max_sched_scan_plan_iterations))
1878                         goto nla_put_failure;
1879
1880                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1881                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1882                         goto nla_put_failure;
1883                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1884                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1885                         goto nla_put_failure;
1886                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1887                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1888                         goto nla_put_failure;
1889                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1890                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1891                         goto nla_put_failure;
1892                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1893                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1894                         goto nla_put_failure;
1895                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1896                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1897                         goto nla_put_failure;
1898                 state->split_start++;
1899                 if (state->split)
1900                         break;
1901                 /* fall through */
1902         case 1:
1903                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1904                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1905                             rdev->wiphy.cipher_suites))
1906                         goto nla_put_failure;
1907
1908                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1909                                rdev->wiphy.max_num_pmkids))
1910                         goto nla_put_failure;
1911
1912                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1913                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1914                         goto nla_put_failure;
1915
1916                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1917                                 rdev->wiphy.available_antennas_tx) ||
1918                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1919                                 rdev->wiphy.available_antennas_rx))
1920                         goto nla_put_failure;
1921
1922                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1923                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1924                                 rdev->wiphy.probe_resp_offload))
1925                         goto nla_put_failure;
1926
1927                 if ((rdev->wiphy.available_antennas_tx ||
1928                      rdev->wiphy.available_antennas_rx) &&
1929                     rdev->ops->get_antenna) {
1930                         u32 tx_ant = 0, rx_ant = 0;
1931                         int res;
1932
1933                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1934                         if (!res) {
1935                                 if (nla_put_u32(msg,
1936                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1937                                                 tx_ant) ||
1938                                     nla_put_u32(msg,
1939                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1940                                                 rx_ant))
1941                                         goto nla_put_failure;
1942                         }
1943                 }
1944
1945                 state->split_start++;
1946                 if (state->split)
1947                         break;
1948                 /* fall through */
1949         case 2:
1950                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1951                                         rdev->wiphy.interface_modes))
1952                                 goto nla_put_failure;
1953                 state->split_start++;
1954                 if (state->split)
1955                         break;
1956                 /* fall through */
1957         case 3:
1958                 nl_bands = nla_nest_start_noflag(msg,
1959                                                  NL80211_ATTR_WIPHY_BANDS);
1960                 if (!nl_bands)
1961                         goto nla_put_failure;
1962
1963                 for (band = state->band_start;
1964                      band < NUM_NL80211_BANDS; band++) {
1965                         struct ieee80211_supported_band *sband;
1966
1967                         sband = rdev->wiphy.bands[band];
1968
1969                         if (!sband)
1970                                 continue;
1971
1972                         nl_band = nla_nest_start_noflag(msg, band);
1973                         if (!nl_band)
1974                                 goto nla_put_failure;
1975
1976                         switch (state->chan_start) {
1977                         case 0:
1978                                 if (nl80211_send_band_rateinfo(msg, sband))
1979                                         goto nla_put_failure;
1980                                 state->chan_start++;
1981                                 if (state->split)
1982                                         break;
1983                                 /* fall through */
1984                         default:
1985                                 /* add frequencies */
1986                                 nl_freqs = nla_nest_start_noflag(msg,
1987                                                                  NL80211_BAND_ATTR_FREQS);
1988                                 if (!nl_freqs)
1989                                         goto nla_put_failure;
1990
1991                                 for (i = state->chan_start - 1;
1992                                      i < sband->n_channels;
1993                                      i++) {
1994                                         nl_freq = nla_nest_start_noflag(msg,
1995                                                                         i);
1996                                         if (!nl_freq)
1997                                                 goto nla_put_failure;
1998
1999                                         chan = &sband->channels[i];
2000
2001                                         if (nl80211_msg_put_channel(
2002                                                         msg, &rdev->wiphy, chan,
2003                                                         state->split))
2004                                                 goto nla_put_failure;
2005
2006                                         nla_nest_end(msg, nl_freq);
2007                                         if (state->split)
2008                                                 break;
2009                                 }
2010                                 if (i < sband->n_channels)
2011                                         state->chan_start = i + 2;
2012                                 else
2013                                         state->chan_start = 0;
2014                                 nla_nest_end(msg, nl_freqs);
2015                         }
2016
2017                         nla_nest_end(msg, nl_band);
2018
2019                         if (state->split) {
2020                                 /* start again here */
2021                                 if (state->chan_start)
2022                                         band--;
2023                                 break;
2024                         }
2025                 }
2026                 nla_nest_end(msg, nl_bands);
2027
2028                 if (band < NUM_NL80211_BANDS)
2029                         state->band_start = band + 1;
2030                 else
2031                         state->band_start = 0;
2032
2033                 /* if bands & channels are done, continue outside */
2034                 if (state->band_start == 0 && state->chan_start == 0)
2035                         state->split_start++;
2036                 if (state->split)
2037                         break;
2038                 /* fall through */
2039         case 4:
2040                 nl_cmds = nla_nest_start_noflag(msg,
2041                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2042                 if (!nl_cmds)
2043                         goto nla_put_failure;
2044
2045                 i = nl80211_add_commands_unsplit(rdev, msg);
2046                 if (i < 0)
2047                         goto nla_put_failure;
2048                 if (state->split) {
2049                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2050                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2051                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2052                                 CMD(channel_switch, CHANNEL_SWITCH);
2053                         CMD(set_qos_map, SET_QOS_MAP);
2054                         if (rdev->wiphy.features &
2055                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2056                                 CMD(add_tx_ts, ADD_TX_TS);
2057                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2058                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2059                 }
2060 #undef CMD
2061
2062                 nla_nest_end(msg, nl_cmds);
2063                 state->split_start++;
2064                 if (state->split)
2065                         break;
2066                 /* fall through */
2067         case 5:
2068                 if (rdev->ops->remain_on_channel &&
2069                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2070                     nla_put_u32(msg,
2071                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2072                                 rdev->wiphy.max_remain_on_channel_duration))
2073                         goto nla_put_failure;
2074
2075                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2076                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2077                         goto nla_put_failure;
2078
2079                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2080                         goto nla_put_failure;
2081                 state->split_start++;
2082                 if (state->split)
2083                         break;
2084                 /* fall through */
2085         case 6:
2086 #ifdef CONFIG_PM
2087                 if (nl80211_send_wowlan(msg, rdev, state->split))
2088                         goto nla_put_failure;
2089                 state->split_start++;
2090                 if (state->split)
2091                         break;
2092 #else
2093                 state->split_start++;
2094 #endif
2095                 /* fall through */
2096         case 7:
2097                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2098                                         rdev->wiphy.software_iftypes))
2099                         goto nla_put_failure;
2100
2101                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2102                                                    state->split))
2103                         goto nla_put_failure;
2104
2105                 state->split_start++;
2106                 if (state->split)
2107                         break;
2108                 /* fall through */
2109         case 8:
2110                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2111                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2112                                 rdev->wiphy.ap_sme_capa))
2113                         goto nla_put_failure;
2114
2115                 features = rdev->wiphy.features;
2116                 /*
2117                  * We can only add the per-channel limit information if the
2118                  * dump is split, otherwise it makes it too big. Therefore
2119                  * only advertise it in that case.
2120                  */
2121                 if (state->split)
2122                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2123                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2124                         goto nla_put_failure;
2125
2126                 if (rdev->wiphy.ht_capa_mod_mask &&
2127                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2128                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2129                             rdev->wiphy.ht_capa_mod_mask))
2130                         goto nla_put_failure;
2131
2132                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2133                     rdev->wiphy.max_acl_mac_addrs &&
2134                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2135                                 rdev->wiphy.max_acl_mac_addrs))
2136                         goto nla_put_failure;
2137
2138                 /*
2139                  * Any information below this point is only available to
2140                  * applications that can deal with it being split. This
2141                  * helps ensure that newly added capabilities don't break
2142                  * older tools by overrunning their buffers.
2143                  *
2144                  * We still increment split_start so that in the split
2145                  * case we'll continue with more data in the next round,
2146                  * but break unconditionally so unsplit data stops here.
2147                  */
2148                 state->split_start++;
2149                 break;
2150         case 9:
2151                 if (rdev->wiphy.extended_capabilities &&
2152                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2153                              rdev->wiphy.extended_capabilities_len,
2154                              rdev->wiphy.extended_capabilities) ||
2155                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2156                              rdev->wiphy.extended_capabilities_len,
2157                              rdev->wiphy.extended_capabilities_mask)))
2158                         goto nla_put_failure;
2159
2160                 if (rdev->wiphy.vht_capa_mod_mask &&
2161                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2162                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2163                             rdev->wiphy.vht_capa_mod_mask))
2164                         goto nla_put_failure;
2165
2166                 state->split_start++;
2167                 break;
2168         case 10:
2169                 if (nl80211_send_coalesce(msg, rdev))
2170                         goto nla_put_failure;
2171
2172                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2173                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2174                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2175                         goto nla_put_failure;
2176
2177                 if (rdev->wiphy.max_ap_assoc_sta &&
2178                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2179                                 rdev->wiphy.max_ap_assoc_sta))
2180                         goto nla_put_failure;
2181
2182                 state->split_start++;
2183                 break;
2184         case 11:
2185                 if (rdev->wiphy.n_vendor_commands) {
2186                         const struct nl80211_vendor_cmd_info *info;
2187                         struct nlattr *nested;
2188
2189                         nested = nla_nest_start_noflag(msg,
2190                                                        NL80211_ATTR_VENDOR_DATA);
2191                         if (!nested)
2192                                 goto nla_put_failure;
2193
2194                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2195                                 info = &rdev->wiphy.vendor_commands[i].info;
2196                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2197                                         goto nla_put_failure;
2198                         }
2199                         nla_nest_end(msg, nested);
2200                 }
2201
2202                 if (rdev->wiphy.n_vendor_events) {
2203                         const struct nl80211_vendor_cmd_info *info;
2204                         struct nlattr *nested;
2205
2206                         nested = nla_nest_start_noflag(msg,
2207                                                        NL80211_ATTR_VENDOR_EVENTS);
2208                         if (!nested)
2209                                 goto nla_put_failure;
2210
2211                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2212                                 info = &rdev->wiphy.vendor_events[i];
2213                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2214                                         goto nla_put_failure;
2215                         }
2216                         nla_nest_end(msg, nested);
2217                 }
2218                 state->split_start++;
2219                 break;
2220         case 12:
2221                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2222                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2223                                rdev->wiphy.max_num_csa_counters))
2224                         goto nla_put_failure;
2225
2226                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2227                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2228                         goto nla_put_failure;
2229
2230                 if (rdev->wiphy.max_sched_scan_reqs &&
2231                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2232                                 rdev->wiphy.max_sched_scan_reqs))
2233                         goto nla_put_failure;
2234
2235                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2236                             sizeof(rdev->wiphy.ext_features),
2237                             rdev->wiphy.ext_features))
2238                         goto nla_put_failure;
2239
2240                 if (rdev->wiphy.bss_select_support) {
2241                         struct nlattr *nested;
2242                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2243
2244                         nested = nla_nest_start_noflag(msg,
2245                                                        NL80211_ATTR_BSS_SELECT);
2246                         if (!nested)
2247                                 goto nla_put_failure;
2248
2249                         i = 0;
2250                         while (bss_select_support) {
2251                                 if ((bss_select_support & 1) &&
2252                                     nla_put_flag(msg, i))
2253                                         goto nla_put_failure;
2254                                 i++;
2255                                 bss_select_support >>= 1;
2256                         }
2257                         nla_nest_end(msg, nested);
2258                 }
2259
2260                 state->split_start++;
2261                 break;
2262         case 13:
2263                 if (rdev->wiphy.num_iftype_ext_capab &&
2264                     rdev->wiphy.iftype_ext_capab) {
2265                         struct nlattr *nested_ext_capab, *nested;
2266
2267                         nested = nla_nest_start_noflag(msg,
2268                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2269                         if (!nested)
2270                                 goto nla_put_failure;
2271
2272                         for (i = state->capa_start;
2273                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2274                                 const struct wiphy_iftype_ext_capab *capab;
2275
2276                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2277
2278                                 nested_ext_capab = nla_nest_start_noflag(msg,
2279                                                                          i);
2280                                 if (!nested_ext_capab ||
2281                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2282                                                 capab->iftype) ||
2283                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2284                                             capab->extended_capabilities_len,
2285                                             capab->extended_capabilities) ||
2286                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2287                                             capab->extended_capabilities_len,
2288                                             capab->extended_capabilities_mask))
2289                                         goto nla_put_failure;
2290
2291                                 nla_nest_end(msg, nested_ext_capab);
2292                                 if (state->split)
2293                                         break;
2294                         }
2295                         nla_nest_end(msg, nested);
2296                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2297                                 state->capa_start = i + 1;
2298                                 break;
2299                         }
2300                 }
2301
2302                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2303                                 rdev->wiphy.nan_supported_bands))
2304                         goto nla_put_failure;
2305
2306                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2307                                             NL80211_EXT_FEATURE_TXQS)) {
2308                         struct cfg80211_txq_stats txqstats = {};
2309                         int res;
2310
2311                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2312                         if (!res &&
2313                             !nl80211_put_txq_stats(msg, &txqstats,
2314                                                    NL80211_ATTR_TXQ_STATS))
2315                                 goto nla_put_failure;
2316
2317                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2318                                         rdev->wiphy.txq_limit))
2319                                 goto nla_put_failure;
2320                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2321                                         rdev->wiphy.txq_memory_limit))
2322                                 goto nla_put_failure;
2323                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2324                                         rdev->wiphy.txq_quantum))
2325                                 goto nla_put_failure;
2326                 }
2327
2328                 state->split_start++;
2329                 break;
2330         case 14:
2331                 if (nl80211_send_pmsr_capa(rdev, msg))
2332                         goto nla_put_failure;
2333
2334                 state->split_start++;
2335                 break;
2336         case 15:
2337                 if (rdev->wiphy.akm_suites &&
2338                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2339                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2340                             rdev->wiphy.akm_suites))
2341                         goto nla_put_failure;
2342
2343                 /* done */
2344                 state->split_start = 0;
2345                 break;
2346         }
2347  finish:
2348         genlmsg_end(msg, hdr);
2349         return 0;
2350
2351  nla_put_failure:
2352         genlmsg_cancel(msg, hdr);
2353         return -EMSGSIZE;
2354 }
2355
2356 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2357                                     struct netlink_callback *cb,
2358                                     struct nl80211_dump_wiphy_state *state)
2359 {
2360         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2361         int ret = nlmsg_parse_deprecated(cb->nlh,
2362                                          GENL_HDRLEN + nl80211_fam.hdrsize,
2363                                          tb, nl80211_fam.maxattr,
2364                                          nl80211_policy, NULL);
2365         /* ignore parse errors for backward compatibility */
2366         if (ret)
2367                 return 0;
2368
2369         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2370         if (tb[NL80211_ATTR_WIPHY])
2371                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2372         if (tb[NL80211_ATTR_WDEV])
2373                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2374         if (tb[NL80211_ATTR_IFINDEX]) {
2375                 struct net_device *netdev;
2376                 struct cfg80211_registered_device *rdev;
2377                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2378
2379                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2380                 if (!netdev)
2381                         return -ENODEV;
2382                 if (netdev->ieee80211_ptr) {
2383                         rdev = wiphy_to_rdev(
2384                                 netdev->ieee80211_ptr->wiphy);
2385                         state->filter_wiphy = rdev->wiphy_idx;
2386                 }
2387         }
2388
2389         return 0;
2390 }
2391
2392 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2393 {
2394         int idx = 0, ret;
2395         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2396         struct cfg80211_registered_device *rdev;
2397
2398         rtnl_lock();
2399         if (!state) {
2400                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2401                 if (!state) {
2402                         rtnl_unlock();
2403                         return -ENOMEM;
2404                 }
2405                 state->filter_wiphy = -1;
2406                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2407                 if (ret) {
2408                         kfree(state);
2409                         rtnl_unlock();
2410                         return ret;
2411                 }
2412                 cb->args[0] = (long)state;
2413         }
2414
2415         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2416                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2417                         continue;
2418                 if (++idx <= state->start)
2419                         continue;
2420                 if (state->filter_wiphy != -1 &&
2421                     state->filter_wiphy != rdev->wiphy_idx)
2422                         continue;
2423                 /* attempt to fit multiple wiphy data chunks into the skb */
2424                 do {
2425                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2426                                                  skb,
2427                                                  NETLINK_CB(cb->skb).portid,
2428                                                  cb->nlh->nlmsg_seq,
2429                                                  NLM_F_MULTI, state);
2430                         if (ret < 0) {
2431                                 /*
2432                                  * If sending the wiphy data didn't fit (ENOBUFS
2433                                  * or EMSGSIZE returned), this SKB is still
2434                                  * empty (so it's not too big because another
2435                                  * wiphy dataset is already in the skb) and
2436                                  * we've not tried to adjust the dump allocation
2437                                  * yet ... then adjust the alloc size to be
2438                                  * bigger, and return 1 but with the empty skb.
2439                                  * This results in an empty message being RX'ed
2440                                  * in userspace, but that is ignored.
2441                                  *
2442                                  * We can then retry with the larger buffer.
2443                                  */
2444                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2445                                     !skb->len && !state->split &&
2446                                     cb->min_dump_alloc < 4096) {
2447                                         cb->min_dump_alloc = 4096;
2448                                         state->split_start = 0;
2449                                         rtnl_unlock();
2450                                         return 1;
2451                                 }
2452                                 idx--;
2453                                 break;
2454                         }
2455                 } while (state->split_start > 0);
2456                 break;
2457         }
2458         rtnl_unlock();
2459
2460         state->start = idx;
2461
2462         return skb->len;
2463 }
2464
2465 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2466 {
2467         kfree((void *)cb->args[0]);
2468         return 0;
2469 }
2470
2471 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2472 {
2473         struct sk_buff *msg;
2474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2475         struct nl80211_dump_wiphy_state state = {};
2476
2477         msg = nlmsg_new(4096, GFP_KERNEL);
2478         if (!msg)
2479                 return -ENOMEM;
2480
2481         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2482                                info->snd_portid, info->snd_seq, 0,
2483                                &state) < 0) {
2484                 nlmsg_free(msg);
2485                 return -ENOBUFS;
2486         }
2487
2488         return genlmsg_reply(msg, info);
2489 }
2490
2491 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2492         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2493         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2494         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2495         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2496         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2497 };
2498
2499 static int parse_txq_params(struct nlattr *tb[],
2500                             struct ieee80211_txq_params *txq_params)
2501 {
2502         u8 ac;
2503
2504         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2505             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2506             !tb[NL80211_TXQ_ATTR_AIFS])
2507                 return -EINVAL;
2508
2509         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2510         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2511         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2512         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2513         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2514
2515         if (ac >= NL80211_NUM_ACS)
2516                 return -EINVAL;
2517         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2518         return 0;
2519 }
2520
2521 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2522 {
2523         /*
2524          * You can only set the channel explicitly for WDS interfaces,
2525          * all others have their channel managed via their respective
2526          * "establish a connection" command (connect, join, ...)
2527          *
2528          * For AP/GO and mesh mode, the channel can be set with the
2529          * channel userspace API, but is only stored and passed to the
2530          * low-level driver when the AP starts or the mesh is joined.
2531          * This is for backward compatibility, userspace can also give
2532          * the channel in the start-ap or join-mesh commands instead.
2533          *
2534          * Monitors are special as they are normally slaved to
2535          * whatever else is going on, so they have their own special
2536          * operation to set the monitor channel if possible.
2537          */
2538         return !wdev ||
2539                 wdev->iftype == NL80211_IFTYPE_AP ||
2540                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2541                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2542                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2543 }
2544
2545 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2546                           struct genl_info *info,
2547                           struct cfg80211_chan_def *chandef)
2548 {
2549         struct netlink_ext_ack *extack = info->extack;
2550         struct nlattr **attrs = info->attrs;
2551         u32 control_freq;
2552
2553         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2554                 return -EINVAL;
2555
2556         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2557
2558         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2559         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2560         chandef->center_freq1 = control_freq;
2561         chandef->center_freq2 = 0;
2562
2563         /* Primary channel not allowed */
2564         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2565                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2566                                     "Channel is disabled");
2567                 return -EINVAL;
2568         }
2569
2570         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2571                 enum nl80211_channel_type chantype;
2572
2573                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2574
2575                 switch (chantype) {
2576                 case NL80211_CHAN_NO_HT:
2577                 case NL80211_CHAN_HT20:
2578                 case NL80211_CHAN_HT40PLUS:
2579                 case NL80211_CHAN_HT40MINUS:
2580                         cfg80211_chandef_create(chandef, chandef->chan,
2581                                                 chantype);
2582                         /* user input for center_freq is incorrect */
2583                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2584                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2585                                 NL_SET_ERR_MSG_ATTR(extack,
2586                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2587                                                     "bad center frequency 1");
2588                                 return -EINVAL;
2589                         }
2590                         /* center_freq2 must be zero */
2591                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2592                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2593                                 NL_SET_ERR_MSG_ATTR(extack,
2594                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2595                                                     "center frequency 2 can't be used");
2596                                 return -EINVAL;
2597                         }
2598                         break;
2599                 default:
2600                         NL_SET_ERR_MSG_ATTR(extack,
2601                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2602                                             "invalid channel type");
2603                         return -EINVAL;
2604                 }
2605         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2606                 chandef->width =
2607                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2608                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2609                         chandef->center_freq1 =
2610                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2611                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2612                         chandef->center_freq2 =
2613                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2614         }
2615
2616         if (!cfg80211_chandef_valid(chandef)) {
2617                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2618                 return -EINVAL;
2619         }
2620
2621         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2622                                      IEEE80211_CHAN_DISABLED)) {
2623                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2624                 return -EINVAL;
2625         }
2626
2627         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2628              chandef->width == NL80211_CHAN_WIDTH_10) &&
2629             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2630                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2631                 return -EINVAL;
2632         }
2633
2634         return 0;
2635 }
2636
2637 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2638                                  struct net_device *dev,
2639                                  struct genl_info *info)
2640 {
2641         struct cfg80211_chan_def chandef;
2642         int result;
2643         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2644         struct wireless_dev *wdev = NULL;
2645
2646         if (dev)
2647                 wdev = dev->ieee80211_ptr;
2648         if (!nl80211_can_set_dev_channel(wdev))
2649                 return -EOPNOTSUPP;
2650         if (wdev)
2651                 iftype = wdev->iftype;
2652
2653         result = nl80211_parse_chandef(rdev, info, &chandef);
2654         if (result)
2655                 return result;
2656
2657         switch (iftype) {
2658         case NL80211_IFTYPE_AP:
2659         case NL80211_IFTYPE_P2P_GO:
2660                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2661                                                    iftype)) {
2662                         result = -EINVAL;
2663                         break;
2664                 }
2665                 if (wdev->beacon_interval) {
2666                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2667                             !(rdev->wiphy.features &
2668                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2669                                 result = -EBUSY;
2670                                 break;
2671                         }
2672
2673                         /* Only allow dynamic channel width changes */
2674                         if (chandef.chan != wdev->preset_chandef.chan) {
2675                                 result = -EBUSY;
2676                                 break;
2677                         }
2678                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2679                         if (result)
2680                                 break;
2681                 }
2682                 wdev->preset_chandef = chandef;
2683                 result = 0;
2684                 break;
2685         case NL80211_IFTYPE_MESH_POINT:
2686                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2687                 break;
2688         case NL80211_IFTYPE_MONITOR:
2689                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2690                 break;
2691         default:
2692                 result = -EINVAL;
2693         }
2694
2695         return result;
2696 }
2697
2698 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2699 {
2700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2701         struct net_device *netdev = info->user_ptr[1];
2702
2703         return __nl80211_set_channel(rdev, netdev, info);
2704 }
2705
2706 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2707 {
2708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2709         struct net_device *dev = info->user_ptr[1];
2710         struct wireless_dev *wdev = dev->ieee80211_ptr;
2711         const u8 *bssid;
2712
2713         if (!info->attrs[NL80211_ATTR_MAC])
2714                 return -EINVAL;
2715
2716         if (netif_running(dev))
2717                 return -EBUSY;
2718
2719         if (!rdev->ops->set_wds_peer)
2720                 return -EOPNOTSUPP;
2721
2722         if (wdev->iftype != NL80211_IFTYPE_WDS)
2723                 return -EOPNOTSUPP;
2724
2725         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2726         return rdev_set_wds_peer(rdev, dev, bssid);
2727 }
2728
2729 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2730 {
2731         struct cfg80211_registered_device *rdev;
2732         struct net_device *netdev = NULL;
2733         struct wireless_dev *wdev;
2734         int result = 0, rem_txq_params = 0;
2735         struct nlattr *nl_txq_params;
2736         u32 changed;
2737         u8 retry_short = 0, retry_long = 0;
2738         u32 frag_threshold = 0, rts_threshold = 0;
2739         u8 coverage_class = 0;
2740         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2741
2742         ASSERT_RTNL();
2743
2744         /*
2745          * Try to find the wiphy and netdev. Normally this
2746          * function shouldn't need the netdev, but this is
2747          * done for backward compatibility -- previously
2748          * setting the channel was done per wiphy, but now
2749          * it is per netdev. Previous userland like hostapd
2750          * also passed a netdev to set_wiphy, so that it is
2751          * possible to let that go to the right netdev!
2752          */
2753
2754         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2755                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2756
2757                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2758                 if (netdev && netdev->ieee80211_ptr)
2759                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2760                 else
2761                         netdev = NULL;
2762         }
2763
2764         if (!netdev) {
2765                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2766                                                   info->attrs);
2767                 if (IS_ERR(rdev))
2768                         return PTR_ERR(rdev);
2769                 wdev = NULL;
2770                 netdev = NULL;
2771                 result = 0;
2772         } else
2773                 wdev = netdev->ieee80211_ptr;
2774
2775         /*
2776          * end workaround code, by now the rdev is available
2777          * and locked, and wdev may or may not be NULL.
2778          */
2779
2780         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2781                 result = cfg80211_dev_rename(
2782                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2783
2784         if (result)
2785                 return result;
2786
2787         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2788                 struct ieee80211_txq_params txq_params;
2789                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2790
2791                 if (!rdev->ops->set_txq_params)
2792                         return -EOPNOTSUPP;
2793
2794                 if (!netdev)
2795                         return -EINVAL;
2796
2797                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2798                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2799                         return -EINVAL;
2800
2801                 if (!netif_running(netdev))
2802                         return -ENETDOWN;
2803
2804                 nla_for_each_nested(nl_txq_params,
2805                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2806                                     rem_txq_params) {
2807                         result = nla_parse_nested_deprecated(tb,
2808                                                              NL80211_TXQ_ATTR_MAX,
2809                                                              nl_txq_params,
2810                                                              txq_params_policy,
2811                                                              info->extack);
2812                         if (result)
2813                                 return result;
2814                         result = parse_txq_params(tb, &txq_params);
2815                         if (result)
2816                                 return result;
2817
2818                         result = rdev_set_txq_params(rdev, netdev,
2819                                                      &txq_params);
2820                         if (result)
2821                                 return result;
2822                 }
2823         }
2824
2825         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2826                 result = __nl80211_set_channel(
2827                         rdev,
2828                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2829                         info);
2830                 if (result)
2831                         return result;
2832         }
2833
2834         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2835                 struct wireless_dev *txp_wdev = wdev;
2836                 enum nl80211_tx_power_setting type;
2837                 int idx, mbm = 0;
2838
2839                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2840                         txp_wdev = NULL;
2841
2842                 if (!rdev->ops->set_tx_power)
2843                         return -EOPNOTSUPP;
2844
2845                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2846                 type = nla_get_u32(info->attrs[idx]);
2847
2848                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2849                     (type != NL80211_TX_POWER_AUTOMATIC))
2850                         return -EINVAL;
2851
2852                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2853                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2854                         mbm = nla_get_u32(info->attrs[idx]);
2855                 }
2856
2857                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2858                 if (result)
2859                         return result;
2860         }
2861
2862         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2863             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2864                 u32 tx_ant, rx_ant;
2865
2866                 if ((!rdev->wiphy.available_antennas_tx &&
2867                      !rdev->wiphy.available_antennas_rx) ||
2868                     !rdev->ops->set_antenna)
2869                         return -EOPNOTSUPP;
2870
2871                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2872                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2873
2874                 /* reject antenna configurations which don't match the
2875                  * available antenna masks, except for the "all" mask */
2876                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2877                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2878                         return -EINVAL;
2879
2880                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2881                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2882
2883                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2884                 if (result)
2885                         return result;
2886         }
2887
2888         changed = 0;
2889
2890         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2891                 retry_short = nla_get_u8(
2892                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2893
2894                 changed |= WIPHY_PARAM_RETRY_SHORT;
2895         }
2896
2897         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2898                 retry_long = nla_get_u8(
2899                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2900
2901                 changed |= WIPHY_PARAM_RETRY_LONG;
2902         }
2903
2904         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2905                 frag_threshold = nla_get_u32(
2906                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2907                 if (frag_threshold < 256)
2908                         return -EINVAL;
2909
2910                 if (frag_threshold != (u32) -1) {
2911                         /*
2912                          * Fragments (apart from the last one) are required to
2913                          * have even length. Make the fragmentation code
2914                          * simpler by stripping LSB should someone try to use
2915                          * odd threshold value.
2916                          */
2917                         frag_threshold &= ~0x1;
2918                 }
2919                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2920         }
2921
2922         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2923                 rts_threshold = nla_get_u32(
2924                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2925                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2926         }
2927
2928         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2929                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2930                         return -EINVAL;
2931
2932                 coverage_class = nla_get_u8(
2933                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2934                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2935         }
2936
2937         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2938                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2939                         return -EOPNOTSUPP;
2940
2941                 changed |= WIPHY_PARAM_DYN_ACK;
2942         }
2943
2944         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2945                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2946                                              NL80211_EXT_FEATURE_TXQS))
2947                         return -EOPNOTSUPP;
2948                 txq_limit = nla_get_u32(
2949                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2950                 changed |= WIPHY_PARAM_TXQ_LIMIT;
2951         }
2952
2953         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2954                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2955                                              NL80211_EXT_FEATURE_TXQS))
2956                         return -EOPNOTSUPP;
2957                 txq_memory_limit = nla_get_u32(
2958                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2959                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2960         }
2961
2962         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2963                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2964                                              NL80211_EXT_FEATURE_TXQS))
2965                         return -EOPNOTSUPP;
2966                 txq_quantum = nla_get_u32(
2967                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2968                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2969         }
2970
2971         if (changed) {
2972                 u8 old_retry_short, old_retry_long;
2973                 u32 old_frag_threshold, old_rts_threshold;
2974                 u8 old_coverage_class;
2975                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2976
2977                 if (!rdev->ops->set_wiphy_params)
2978                         return -EOPNOTSUPP;
2979
2980                 old_retry_short = rdev->wiphy.retry_short;
2981                 old_retry_long = rdev->wiphy.retry_long;
2982                 old_frag_threshold = rdev->wiphy.frag_threshold;
2983                 old_rts_threshold = rdev->wiphy.rts_threshold;
2984                 old_coverage_class = rdev->wiphy.coverage_class;
2985                 old_txq_limit = rdev->wiphy.txq_limit;
2986                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2987                 old_txq_quantum = rdev->wiphy.txq_quantum;
2988
2989                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2990                         rdev->wiphy.retry_short = retry_short;
2991                 if (changed & WIPHY_PARAM_RETRY_LONG)
2992                         rdev->wiphy.retry_long = retry_long;
2993                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2994                         rdev->wiphy.frag_threshold = frag_threshold;
2995                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2996                         rdev->wiphy.rts_threshold = rts_threshold;
2997                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2998                         rdev->wiphy.coverage_class = coverage_class;
2999                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3000                         rdev->wiphy.txq_limit = txq_limit;
3001                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3002                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3003                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3004                         rdev->wiphy.txq_quantum = txq_quantum;
3005
3006                 result = rdev_set_wiphy_params(rdev, changed);
3007                 if (result) {
3008                         rdev->wiphy.retry_short = old_retry_short;
3009                         rdev->wiphy.retry_long = old_retry_long;
3010                         rdev->wiphy.frag_threshold = old_frag_threshold;
3011                         rdev->wiphy.rts_threshold = old_rts_threshold;
3012                         rdev->wiphy.coverage_class = old_coverage_class;
3013                         rdev->wiphy.txq_limit = old_txq_limit;
3014                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3015                         rdev->wiphy.txq_quantum = old_txq_quantum;
3016                         return result;
3017                 }
3018         }
3019         return 0;
3020 }
3021
3022 static int nl80211_send_chandef(struct sk_buff *msg,
3023                                 const struct cfg80211_chan_def *chandef)
3024 {
3025         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3026                 return -EINVAL;
3027
3028         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3029                         chandef->chan->center_freq))
3030                 return -ENOBUFS;
3031         switch (chandef->width) {
3032         case NL80211_CHAN_WIDTH_20_NOHT:
3033         case NL80211_CHAN_WIDTH_20:
3034         case NL80211_CHAN_WIDTH_40:
3035                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3036                                 cfg80211_get_chandef_type(chandef)))
3037                         return -ENOBUFS;
3038                 break;
3039         default:
3040                 break;
3041         }
3042         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3043                 return -ENOBUFS;
3044         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3045                 return -ENOBUFS;
3046         if (chandef->center_freq2 &&
3047             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3048                 return -ENOBUFS;
3049         return 0;
3050 }
3051
3052 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3053                               struct cfg80211_registered_device *rdev,
3054                               struct wireless_dev *wdev,
3055                               enum nl80211_commands cmd)
3056 {
3057         struct net_device *dev = wdev->netdev;
3058         void *hdr;
3059
3060         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3061                 cmd != NL80211_CMD_DEL_INTERFACE &&
3062                 cmd != NL80211_CMD_SET_INTERFACE);
3063
3064         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3065         if (!hdr)
3066                 return -1;
3067
3068         if (dev &&
3069             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3070              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3071                 goto nla_put_failure;
3072
3073         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3074             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3075             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3076                               NL80211_ATTR_PAD) ||
3077             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3078             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3079                         rdev->devlist_generation ^
3080                         (cfg80211_rdev_list_generation << 2)) ||
3081             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3082                 goto nla_put_failure;
3083
3084         if (rdev->ops->get_channel) {
3085                 int ret;
3086                 struct cfg80211_chan_def chandef;
3087
3088                 ret = rdev_get_channel(rdev, wdev, &chandef);
3089                 if (ret == 0) {
3090                         if (nl80211_send_chandef(msg, &chandef))
3091                                 goto nla_put_failure;
3092                 }
3093         }
3094
3095         if (rdev->ops->get_tx_power) {
3096                 int dbm, ret;
3097
3098                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3099                 if (ret == 0 &&
3100                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3101                                 DBM_TO_MBM(dbm)))
3102                         goto nla_put_failure;
3103         }
3104
3105         wdev_lock(wdev);
3106         switch (wdev->iftype) {
3107         case NL80211_IFTYPE_AP:
3108                 if (wdev->ssid_len &&
3109                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3110                         goto nla_put_failure_locked;
3111                 break;
3112         case NL80211_IFTYPE_STATION:
3113         case NL80211_IFTYPE_P2P_CLIENT:
3114         case NL80211_IFTYPE_ADHOC: {
3115                 const u8 *ssid_ie;
3116                 if (!wdev->current_bss)
3117                         break;
3118                 rcu_read_lock();
3119                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3120                                                WLAN_EID_SSID);
3121                 if (ssid_ie &&
3122                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3123                         goto nla_put_failure_rcu_locked;
3124                 rcu_read_unlock();
3125                 break;
3126                 }
3127         default:
3128                 /* nothing */
3129                 break;
3130         }
3131         wdev_unlock(wdev);
3132
3133         if (rdev->ops->get_txq_stats) {
3134                 struct cfg80211_txq_stats txqstats = {};
3135                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3136
3137                 if (ret == 0 &&
3138                     !nl80211_put_txq_stats(msg, &txqstats,
3139                                            NL80211_ATTR_TXQ_STATS))
3140                         goto nla_put_failure;
3141         }
3142
3143         genlmsg_end(msg, hdr);
3144         return 0;
3145
3146  nla_put_failure_rcu_locked:
3147         rcu_read_unlock();
3148  nla_put_failure_locked:
3149         wdev_unlock(wdev);
3150  nla_put_failure:
3151         genlmsg_cancel(msg, hdr);
3152         return -EMSGSIZE;
3153 }
3154
3155 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3156 {
3157         int wp_idx = 0;
3158         int if_idx = 0;
3159         int wp_start = cb->args[0];
3160         int if_start = cb->args[1];
3161         int filter_wiphy = -1;
3162         struct cfg80211_registered_device *rdev;
3163         struct wireless_dev *wdev;
3164         int ret;
3165
3166         rtnl_lock();
3167         if (!cb->args[2]) {
3168                 struct nl80211_dump_wiphy_state state = {
3169                         .filter_wiphy = -1,
3170                 };
3171
3172                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3173                 if (ret)
3174                         goto out_unlock;
3175
3176                 filter_wiphy = state.filter_wiphy;
3177
3178                 /*
3179                  * if filtering, set cb->args[2] to +1 since 0 is the default
3180                  * value needed to determine that parsing is necessary.
3181                  */
3182                 if (filter_wiphy >= 0)
3183                         cb->args[2] = filter_wiphy + 1;
3184                 else
3185                         cb->args[2] = -1;
3186         } else if (cb->args[2] > 0) {
3187                 filter_wiphy = cb->args[2] - 1;
3188         }
3189
3190         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3191                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3192                         continue;
3193                 if (wp_idx < wp_start) {
3194                         wp_idx++;
3195                         continue;
3196                 }
3197
3198                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3199                         continue;
3200
3201                 if_idx = 0;
3202
3203                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3204                         if (if_idx < if_start) {
3205                                 if_idx++;
3206                                 continue;
3207                         }
3208                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3209                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3210                                                rdev, wdev,
3211                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3212                                 goto out;
3213                         }
3214                         if_idx++;
3215                 }
3216
3217                 wp_idx++;
3218         }
3219  out:
3220         cb->args[0] = wp_idx;
3221         cb->args[1] = if_idx;
3222
3223         ret = skb->len;
3224  out_unlock:
3225         rtnl_unlock();
3226
3227         return ret;
3228 }
3229
3230 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3231 {
3232         struct sk_buff *msg;
3233         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3234         struct wireless_dev *wdev = info->user_ptr[1];
3235
3236         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3237         if (!msg)
3238                 return -ENOMEM;
3239
3240         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3241                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3242                 nlmsg_free(msg);
3243                 return -ENOBUFS;
3244         }
3245
3246         return genlmsg_reply(msg, info);
3247 }
3248
3249 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3250         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3251         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3252         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3253         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3254         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3255         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3256 };
3257
3258 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3259 {
3260         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3261         int flag;
3262
3263         *mntrflags = 0;
3264
3265         if (!nla)
3266                 return -EINVAL;
3267
3268         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3269                 return -EINVAL;
3270
3271         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3272                 if (flags[flag])
3273                         *mntrflags |= (1<<flag);
3274
3275         *mntrflags |= MONITOR_FLAG_CHANGED;
3276
3277         return 0;
3278 }
3279
3280 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3281                                      enum nl80211_iftype type,
3282                                      struct genl_info *info,
3283                                      struct vif_params *params)
3284 {
3285         bool change = false;
3286         int err;
3287
3288         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3289                 if (type != NL80211_IFTYPE_MONITOR)
3290                         return -EINVAL;
3291
3292                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3293                                           &params->flags);
3294                 if (err)
3295                         return err;
3296
3297                 change = true;
3298         }
3299
3300         if (params->flags & MONITOR_FLAG_ACTIVE &&
3301             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3302                 return -EOPNOTSUPP;
3303
3304         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3305                 const u8 *mumimo_groups;
3306                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3307
3308                 if (type != NL80211_IFTYPE_MONITOR)
3309                         return -EINVAL;
3310
3311                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3312                         return -EOPNOTSUPP;
3313
3314                 mumimo_groups =
3315                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3316
3317                 /* bits 0 and 63 are reserved and must be zero */
3318                 if ((mumimo_groups[0] & BIT(0)) ||
3319                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3320                         return -EINVAL;
3321
3322                 params->vht_mumimo_groups = mumimo_groups;
3323                 change = true;
3324         }
3325
3326         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3327                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3328
3329                 if (type != NL80211_IFTYPE_MONITOR)
3330                         return -EINVAL;
3331
3332                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3333                         return -EOPNOTSUPP;
3334
3335                 params->vht_mumimo_follow_addr =
3336                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3337                 change = true;
3338         }
3339
3340         return change ? 1 : 0;
3341 }
3342
3343 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3344                                struct net_device *netdev, u8 use_4addr,
3345                                enum nl80211_iftype iftype)
3346 {
3347         if (!use_4addr) {
3348                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3349                         return -EBUSY;
3350                 return 0;
3351         }
3352
3353         switch (iftype) {
3354         case NL80211_IFTYPE_AP_VLAN:
3355                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3356                         return 0;
3357                 break;
3358         case NL80211_IFTYPE_STATION:
3359                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3360                         return 0;
3361                 break;
3362         default:
3363                 break;
3364         }
3365
3366         return -EOPNOTSUPP;
3367 }
3368
3369 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3370 {
3371         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3372         struct vif_params params;
3373         int err;
3374         enum nl80211_iftype otype, ntype;
3375         struct net_device *dev = info->user_ptr[1];
3376         bool change = false;
3377
3378         memset(&params, 0, sizeof(params));
3379
3380         otype = ntype = dev->ieee80211_ptr->iftype;
3381
3382         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3383                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3384                 if (otype != ntype)
3385                         change = true;
3386         }
3387
3388         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3389                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3390
3391                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3392                         return -EINVAL;
3393                 if (netif_running(dev))
3394                         return -EBUSY;
3395
3396                 wdev_lock(wdev);
3397                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3398                              IEEE80211_MAX_MESH_ID_LEN);
3399                 wdev->mesh_id_up_len =
3400                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3401                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3402                        wdev->mesh_id_up_len);
3403                 wdev_unlock(wdev);
3404         }
3405
3406         if (info->attrs[NL80211_ATTR_4ADDR]) {
3407                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3408                 change = true;
3409                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3410                 if (err)
3411                         return err;
3412         } else {
3413                 params.use_4addr = -1;
3414         }
3415
3416         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3417         if (err < 0)
3418                 return err;
3419         if (err > 0)
3420                 change = true;
3421
3422         if (change)
3423                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3424         else
3425                 err = 0;
3426
3427         if (!err && params.use_4addr != -1)
3428                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3429
3430         if (change && !err) {
3431                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3432
3433                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3434         }
3435
3436         return err;
3437 }
3438
3439 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3440 {
3441         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3442         struct vif_params params;
3443         struct wireless_dev *wdev;
3444         struct sk_buff *msg;
3445         int err;
3446         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3447
3448         /* to avoid failing a new interface creation due to pending removal */
3449         cfg80211_destroy_ifaces(rdev);
3450
3451         memset(&params, 0, sizeof(params));
3452
3453         if (!info->attrs[NL80211_ATTR_IFNAME])
3454                 return -EINVAL;
3455
3456         if (info->attrs[NL80211_ATTR_IFTYPE])
3457                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3458
3459         if (!rdev->ops->add_virtual_intf ||
3460             !(rdev->wiphy.interface_modes & (1 << type)))
3461                 return -EOPNOTSUPP;
3462
3463         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3464              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3465             info->attrs[NL80211_ATTR_MAC]) {
3466                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3467                            ETH_ALEN);
3468                 if (!is_valid_ether_addr(params.macaddr))
3469                         return -EADDRNOTAVAIL;
3470         }
3471
3472         if (info->attrs[NL80211_ATTR_4ADDR]) {
3473                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3474                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3475                 if (err)
3476                         return err;
3477         }
3478
3479         err = nl80211_parse_mon_options(rdev, type, info, &params);
3480         if (err < 0)
3481                 return err;
3482
3483         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3484         if (!msg)
3485                 return -ENOMEM;
3486
3487         wdev = rdev_add_virtual_intf(rdev,
3488                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3489                                 NET_NAME_USER, type, &params);
3490         if (WARN_ON(!wdev)) {
3491                 nlmsg_free(msg);
3492                 return -EPROTO;
3493         } else if (IS_ERR(wdev)) {
3494                 nlmsg_free(msg);
3495                 return PTR_ERR(wdev);
3496         }
3497
3498         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3499                 wdev->owner_nlportid = info->snd_portid;
3500
3501         switch (type) {
3502         case NL80211_IFTYPE_MESH_POINT:
3503                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3504                         break;
3505                 wdev_lock(wdev);
3506                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3507                              IEEE80211_MAX_MESH_ID_LEN);
3508                 wdev->mesh_id_up_len =
3509                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3510                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3511                        wdev->mesh_id_up_len);
3512                 wdev_unlock(wdev);
3513                 break;
3514         case NL80211_IFTYPE_NAN:
3515         case NL80211_IFTYPE_P2P_DEVICE:
3516                 /*
3517                  * P2P Device and NAN do not have a netdev, so don't go
3518                  * through the netdev notifier and must be added here
3519                  */
3520                 cfg80211_init_wdev(rdev, wdev);
3521                 break;
3522         default:
3523                 break;
3524         }
3525
3526         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3527                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3528                 nlmsg_free(msg);
3529                 return -ENOBUFS;
3530         }
3531
3532         return genlmsg_reply(msg, info);
3533 }
3534
3535 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3536 {
3537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3538         struct wireless_dev *wdev = info->user_ptr[1];
3539
3540         if (!rdev->ops->del_virtual_intf)
3541                 return -EOPNOTSUPP;
3542
3543         /*
3544          * If we remove a wireless device without a netdev then clear
3545          * user_ptr[1] so that nl80211_post_doit won't dereference it
3546          * to check if it needs to do dev_put(). Otherwise it crashes
3547          * since the wdev has been freed, unlike with a netdev where
3548          * we need the dev_put() for the netdev to really be freed.
3549          */
3550         if (!wdev->netdev)
3551                 info->user_ptr[1] = NULL;
3552
3553         return rdev_del_virtual_intf(rdev, wdev);
3554 }
3555
3556 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3557 {
3558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3559         struct net_device *dev = info->user_ptr[1];
3560         u16 noack_map;
3561
3562         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3563                 return -EINVAL;
3564
3565         if (!rdev->ops->set_noack_map)
3566                 return -EOPNOTSUPP;
3567
3568         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3569
3570         return rdev_set_noack_map(rdev, dev, noack_map);
3571 }
3572
3573 struct get_key_cookie {
3574         struct sk_buff *msg;
3575         int error;
3576         int idx;
3577 };
3578
3579 static void get_key_callback(void *c, struct key_params *params)
3580 {
3581         struct nlattr *key;
3582         struct get_key_cookie *cookie = c;
3583
3584         if ((params->key &&
3585              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3586                      params->key_len, params->key)) ||
3587             (params->seq &&
3588              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3589                      params->seq_len, params->seq)) ||
3590             (params->cipher &&
3591              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3592                          params->cipher)))
3593                 goto nla_put_failure;
3594
3595         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3596         if (!key)
3597                 goto nla_put_failure;
3598
3599         if ((params->key &&
3600              nla_put(cookie->msg, NL80211_KEY_DATA,
3601                      params->key_len, params->key)) ||
3602             (params->seq &&
3603              nla_put(cookie->msg, NL80211_KEY_SEQ,
3604                      params->seq_len, params->seq)) ||
3605             (params->cipher &&
3606              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3607                          params->cipher)))
3608                 goto nla_put_failure;
3609
3610         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3611                 goto nla_put_failure;
3612
3613         nla_nest_end(cookie->msg, key);
3614
3615         return;
3616  nla_put_failure:
3617         cookie->error = 1;
3618 }
3619
3620 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3621 {
3622         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3623         int err;
3624         struct net_device *dev = info->user_ptr[1];
3625         u8 key_idx = 0;
3626         const u8 *mac_addr = NULL;
3627         bool pairwise;
3628         struct get_key_cookie cookie = {
3629                 .error = 0,
3630         };
3631         void *hdr;
3632         struct sk_buff *msg;
3633
3634         if (info->attrs[NL80211_ATTR_KEY_IDX])
3635                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3636
3637         if (info->attrs[NL80211_ATTR_MAC])
3638                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3639
3640         pairwise = !!mac_addr;
3641         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3642                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3643
3644                 if (kt != NL80211_KEYTYPE_GROUP &&
3645                     kt != NL80211_KEYTYPE_PAIRWISE)
3646                         return -EINVAL;
3647                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3648         }
3649
3650         if (!rdev->ops->get_key)
3651                 return -EOPNOTSUPP;
3652
3653         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3654                 return -ENOENT;
3655
3656         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3657         if (!msg)
3658                 return -ENOMEM;
3659
3660         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3661                              NL80211_CMD_NEW_KEY);
3662         if (!hdr)
3663                 goto nla_put_failure;
3664
3665         cookie.msg = msg;
3666         cookie.idx = key_idx;
3667
3668         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3669             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3670                 goto nla_put_failure;
3671         if (mac_addr &&
3672             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3673                 goto nla_put_failure;
3674
3675         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3676                            get_key_callback);
3677
3678         if (err)
3679                 goto free_msg;
3680
3681         if (cookie.error)
3682                 goto nla_put_failure;
3683
3684         genlmsg_end(msg, hdr);
3685         return genlmsg_reply(msg, info);
3686
3687  nla_put_failure:
3688         err = -ENOBUFS;
3689  free_msg:
3690         nlmsg_free(msg);
3691         return err;
3692 }
3693
3694 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3695 {
3696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3697         struct key_parse key;
3698         int err;
3699         struct net_device *dev = info->user_ptr[1];
3700
3701         err = nl80211_parse_key(info, &key);
3702         if (err)
3703                 return err;
3704
3705         if (key.idx < 0)
3706                 return -EINVAL;
3707
3708         /* Only support setting default key and
3709          * Extended Key ID action NL80211_KEY_SET_TX.
3710          */
3711         if (!key.def && !key.defmgmt &&
3712             !(key.p.mode == NL80211_KEY_SET_TX))
3713                 return -EINVAL;
3714
3715         wdev_lock(dev->ieee80211_ptr);
3716
3717         if (key.def) {
3718                 if (!rdev->ops->set_default_key) {
3719                         err = -EOPNOTSUPP;
3720                         goto out;
3721                 }
3722
3723                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3724                 if (err)
3725                         goto out;
3726
3727                 err = rdev_set_default_key(rdev, dev, key.idx,
3728                                                  key.def_uni, key.def_multi);
3729
3730                 if (err)
3731                         goto out;
3732
3733 #ifdef CONFIG_CFG80211_WEXT
3734                 dev->ieee80211_ptr->wext.default_key = key.idx;
3735 #endif
3736         } else if (key.defmgmt) {
3737                 if (key.def_uni || !key.def_multi) {
3738                         err = -EINVAL;
3739                         goto out;
3740                 }
3741
3742                 if (!rdev->ops->set_default_mgmt_key) {
3743                         err = -EOPNOTSUPP;
3744                         goto out;
3745                 }
3746
3747                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3748                 if (err)
3749                         goto out;
3750
3751                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3752                 if (err)
3753                         goto out;
3754
3755 #ifdef CONFIG_CFG80211_WEXT
3756                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3757 #endif
3758         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3759                    wiphy_ext_feature_isset(&rdev->wiphy,
3760                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3761                 u8 *mac_addr = NULL;
3762
3763                 if (info->attrs[NL80211_ATTR_MAC])
3764                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3765
3766                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3767                         err = -EINVAL;
3768                         goto out;
3769                 }
3770
3771                 err = rdev_add_key(rdev, dev, key.idx,
3772                                    NL80211_KEYTYPE_PAIRWISE,
3773                                    mac_addr, &key.p);
3774         } else {
3775                 err = -EINVAL;
3776         }
3777  out:
3778         wdev_unlock(dev->ieee80211_ptr);
3779
3780         return err;
3781 }
3782
3783 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3784 {
3785         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3786         int err;
3787         struct net_device *dev = info->user_ptr[1];
3788         struct key_parse key;
3789         const u8 *mac_addr = NULL;
3790
3791         err = nl80211_parse_key(info, &key);
3792         if (err)
3793                 return err;
3794
3795         if (!key.p.key)
3796                 return -EINVAL;
3797
3798         if (info->attrs[NL80211_ATTR_MAC])
3799                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3800
3801         if (key.type == -1) {
3802                 if (mac_addr)
3803                         key.type = NL80211_KEYTYPE_PAIRWISE;
3804                 else
3805                         key.type = NL80211_KEYTYPE_GROUP;
3806         }
3807
3808         /* for now */
3809         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3810             key.type != NL80211_KEYTYPE_GROUP)
3811                 return -EINVAL;
3812
3813         if (!rdev->ops->add_key)
3814                 return -EOPNOTSUPP;
3815
3816         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3817                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3818                                            mac_addr))
3819                 return -EINVAL;
3820
3821         wdev_lock(dev->ieee80211_ptr);
3822         err = nl80211_key_allowed(dev->ieee80211_ptr);
3823         if (!err)
3824                 err = rdev_add_key(rdev, dev, key.idx,
3825                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3826                                     mac_addr, &key.p);
3827         wdev_unlock(dev->ieee80211_ptr);
3828
3829         return err;
3830 }
3831
3832 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3833 {
3834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3835         int err;
3836         struct net_device *dev = info->user_ptr[1];
3837         u8 *mac_addr = NULL;
3838         struct key_parse key;
3839
3840         err = nl80211_parse_key(info, &key);
3841         if (err)
3842                 return err;
3843
3844         if (info->attrs[NL80211_ATTR_MAC])
3845                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3846
3847         if (key.type == -1) {
3848                 if (mac_addr)
3849                         key.type = NL80211_KEYTYPE_PAIRWISE;
3850                 else
3851                         key.type = NL80211_KEYTYPE_GROUP;
3852         }
3853
3854         /* for now */
3855         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3856             key.type != NL80211_KEYTYPE_GROUP)
3857                 return -EINVAL;
3858
3859         if (!rdev->ops->del_key)
3860                 return -EOPNOTSUPP;
3861
3862         wdev_lock(dev->ieee80211_ptr);
3863         err = nl80211_key_allowed(dev->ieee80211_ptr);
3864
3865         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3866             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3867                 err = -ENOENT;
3868
3869         if (!err)
3870                 err = rdev_del_key(rdev, dev, key.idx,
3871                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3872                                    mac_addr);
3873
3874 #ifdef CONFIG_CFG80211_WEXT
3875         if (!err) {
3876                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3877                         dev->ieee80211_ptr->wext.default_key = -1;
3878                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3879                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3880         }
3881 #endif
3882         wdev_unlock(dev->ieee80211_ptr);
3883
3884         return err;
3885 }
3886
3887 /* This function returns an error or the number of nested attributes */
3888 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3889 {
3890         struct nlattr *attr;
3891         int n_entries = 0, tmp;
3892
3893         nla_for_each_nested(attr, nl_attr, tmp) {
3894                 if (nla_len(attr) != ETH_ALEN)
3895                         return -EINVAL;
3896
3897                 n_entries++;
3898         }
3899
3900         return n_entries;
3901 }
3902
3903 /*
3904  * This function parses ACL information and allocates memory for ACL data.
3905  * On successful return, the calling function is responsible to free the
3906  * ACL buffer returned by this function.
3907  */
3908 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3909                                                 struct genl_info *info)
3910 {
3911         enum nl80211_acl_policy acl_policy;
3912         struct nlattr *attr;
3913         struct cfg80211_acl_data *acl;
3914         int i = 0, n_entries, tmp;
3915
3916         if (!wiphy->max_acl_mac_addrs)
3917                 return ERR_PTR(-EOPNOTSUPP);
3918
3919         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3920                 return ERR_PTR(-EINVAL);
3921
3922         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3923         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3924             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3925                 return ERR_PTR(-EINVAL);
3926
3927         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3928                 return ERR_PTR(-EINVAL);
3929
3930         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3931         if (n_entries < 0)
3932                 return ERR_PTR(n_entries);
3933
3934         if (n_entries > wiphy->max_acl_mac_addrs)
3935                 return ERR_PTR(-ENOTSUPP);
3936
3937         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
3938         if (!acl)
3939                 return ERR_PTR(-ENOMEM);
3940
3941         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3942                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3943                 i++;
3944         }
3945
3946         acl->n_acl_entries = n_entries;
3947         acl->acl_policy = acl_policy;
3948
3949         return acl;
3950 }
3951
3952 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3953 {
3954         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3955         struct net_device *dev = info->user_ptr[1];
3956         struct cfg80211_acl_data *acl;
3957         int err;
3958
3959         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3960             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3961                 return -EOPNOTSUPP;
3962
3963         if (!dev->ieee80211_ptr->beacon_interval)
3964                 return -EINVAL;
3965
3966         acl = parse_acl_data(&rdev->wiphy, info);
3967         if (IS_ERR(acl))
3968                 return PTR_ERR(acl);
3969
3970         err = rdev_set_mac_acl(rdev, dev, acl);
3971
3972         kfree(acl);
3973
3974         return err;
3975 }
3976
3977 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3978                            u8 *rates, u8 rates_len)
3979 {
3980         u8 i;
3981         u32 mask = 0;
3982
3983         for (i = 0; i < rates_len; i++) {
3984                 int rate = (rates[i] & 0x7f) * 5;
3985                 int ridx;
3986
3987                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3988                         struct ieee80211_rate *srate =
3989                                 &sband->bitrates[ridx];
3990                         if (rate == srate->bitrate) {
3991                                 mask |= 1 << ridx;
3992                                 break;
3993                         }
3994                 }
3995                 if (ridx == sband->n_bitrates)
3996                         return 0; /* rate not found */
3997         }
3998
3999         return mask;
4000 }
4001
4002 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4003                                u8 *rates, u8 rates_len,
4004                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4005 {
4006         u8 i;
4007
4008         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4009
4010         for (i = 0; i < rates_len; i++) {
4011                 int ridx, rbit;
4012
4013                 ridx = rates[i] / 8;
4014                 rbit = BIT(rates[i] % 8);
4015
4016                 /* check validity */
4017                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4018                         return false;
4019
4020                 /* check availability */
4021                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4022                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4023                         mcs[ridx] |= rbit;
4024                 else
4025                         return false;
4026         }
4027
4028         return true;
4029 }
4030
4031 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4032 {
4033         u16 mcs_mask = 0;
4034
4035         switch (vht_mcs_map) {
4036         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4037                 break;
4038         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4039                 mcs_mask = 0x00FF;
4040                 break;
4041         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4042                 mcs_mask = 0x01FF;
4043                 break;
4044         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4045                 mcs_mask = 0x03FF;
4046                 break;
4047         default:
4048                 break;
4049         }
4050
4051         return mcs_mask;
4052 }
4053
4054 static void vht_build_mcs_mask(u16 vht_mcs_map,
4055                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4056 {
4057         u8 nss;
4058
4059         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4060                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4061                 vht_mcs_map >>= 2;
4062         }
4063 }
4064
4065 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4066                              struct nl80211_txrate_vht *txrate,
4067                              u16 mcs[NL80211_VHT_NSS_MAX])
4068 {
4069         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4070         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4071         u8 i;
4072
4073         if (!sband->vht_cap.vht_supported)
4074                 return false;
4075
4076         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4077
4078         /* Build vht_mcs_mask from VHT capabilities */
4079         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4080
4081         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4082                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4083                         mcs[i] = txrate->mcs[i];
4084                 else
4085                         return false;
4086         }
4087
4088         return true;
4089 }
4090
4091 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4092         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4093                                     .len = NL80211_MAX_SUPP_RATES },
4094         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4095                                 .len = NL80211_MAX_SUPP_HT_RATES },
4096         [NL80211_TXRATE_VHT] = { .type = NLA_EXACT_LEN_WARN, .len = sizeof(struct nl80211_txrate_vht)},
4097         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4098 };
4099
4100 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4101                                          struct cfg80211_bitrate_mask *mask)
4102 {
4103         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4105         int rem, i;
4106         struct nlattr *tx_rates;
4107         struct ieee80211_supported_band *sband;
4108         u16 vht_tx_mcs_map;
4109
4110         memset(mask, 0, sizeof(*mask));
4111         /* Default to all rates enabled */
4112         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4113                 sband = rdev->wiphy.bands[i];
4114
4115                 if (!sband)
4116                         continue;
4117
4118                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4119                 memcpy(mask->control[i].ht_mcs,
4120                        sband->ht_cap.mcs.rx_mask,
4121                        sizeof(mask->control[i].ht_mcs));
4122
4123                 if (!sband->vht_cap.vht_supported)
4124                         continue;
4125
4126                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4127                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4128         }
4129
4130         /* if no rates are given set it back to the defaults */
4131         if (!info->attrs[NL80211_ATTR_TX_RATES])
4132                 goto out;
4133
4134         /* The nested attribute uses enum nl80211_band as the index. This maps
4135          * directly to the enum nl80211_band values used in cfg80211.
4136          */
4137         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4138         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4139                 enum nl80211_band band = nla_type(tx_rates);
4140                 int err;
4141
4142                 if (band < 0 || band >= NUM_NL80211_BANDS)
4143                         return -EINVAL;
4144                 sband = rdev->wiphy.bands[band];
4145                 if (sband == NULL)
4146                         return -EINVAL;
4147                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4148                                                   tx_rates,
4149                                                   nl80211_txattr_policy,
4150                                                   info->extack);
4151                 if (err)
4152                         return err;
4153                 if (tb[NL80211_TXRATE_LEGACY]) {
4154                         mask->control[band].legacy = rateset_to_mask(
4155                                 sband,
4156                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4157                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4158                         if ((mask->control[band].legacy == 0) &&
4159                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4160                                 return -EINVAL;
4161                 }
4162                 if (tb[NL80211_TXRATE_HT]) {
4163                         if (!ht_rateset_to_mask(
4164                                         sband,
4165                                         nla_data(tb[NL80211_TXRATE_HT]),
4166                                         nla_len(tb[NL80211_TXRATE_HT]),
4167                                         mask->control[band].ht_mcs))
4168                                 return -EINVAL;
4169                 }
4170                 if (tb[NL80211_TXRATE_VHT]) {
4171                         if (!vht_set_mcs_mask(
4172                                         sband,
4173                                         nla_data(tb[NL80211_TXRATE_VHT]),
4174                                         mask->control[band].vht_mcs))
4175                                 return -EINVAL;
4176                 }
4177                 if (tb[NL80211_TXRATE_GI]) {
4178                         mask->control[band].gi =
4179                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4180                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4181                                 return -EINVAL;
4182                 }
4183
4184                 if (mask->control[band].legacy == 0) {
4185                         /* don't allow empty legacy rates if HT or VHT
4186                          * are not even supported.
4187                          */
4188                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4189                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4190                                 return -EINVAL;
4191
4192                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4193                                 if (mask->control[band].ht_mcs[i])
4194                                         goto out;
4195
4196                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4197                                 if (mask->control[band].vht_mcs[i])
4198                                         goto out;
4199
4200                         /* legacy and mcs rates may not be both empty */
4201                         return -EINVAL;
4202                 }
4203         }
4204
4205 out:
4206         return 0;
4207 }
4208
4209 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4210                                    enum nl80211_band band,
4211                                    struct cfg80211_bitrate_mask *beacon_rate)
4212 {
4213         u32 count_ht, count_vht, i;
4214         u32 rate = beacon_rate->control[band].legacy;
4215
4216         /* Allow only one rate */
4217         if (hweight32(rate) > 1)
4218                 return -EINVAL;
4219
4220         count_ht = 0;
4221         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4222                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4223                         return -EINVAL;
4224                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4225                         count_ht++;
4226                         if (count_ht > 1)
4227                                 return -EINVAL;
4228                 }
4229                 if (count_ht && rate)
4230                         return -EINVAL;
4231         }
4232
4233         count_vht = 0;
4234         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4235                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4236                         return -EINVAL;
4237                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4238                         count_vht++;
4239                         if (count_vht > 1)
4240                                 return -EINVAL;
4241                 }
4242                 if (count_vht && rate)
4243                         return -EINVAL;
4244         }
4245
4246         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4247                 return -EINVAL;
4248
4249         if (rate &&
4250             !wiphy_ext_feature_isset(&rdev->wiphy,
4251                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4252                 return -EINVAL;
4253         if (count_ht &&
4254             !wiphy_ext_feature_isset(&rdev->wiphy,
4255                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4256                 return -EINVAL;
4257         if (count_vht &&
4258             !wiphy_ext_feature_isset(&rdev->wiphy,
4259                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4260                 return -EINVAL;
4261
4262         return 0;
4263 }
4264
4265 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4266                                 struct nlattr *attrs[],
4267                                 struct cfg80211_beacon_data *bcn)
4268 {
4269         bool haveinfo = false;
4270         int err;
4271
4272         memset(bcn, 0, sizeof(*bcn));
4273
4274         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4275                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4276                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4277                 if (!bcn->head_len)
4278                         return -EINVAL;
4279                 haveinfo = true;
4280         }
4281
4282         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4283                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4284                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4285                 haveinfo = true;
4286         }
4287
4288         if (!haveinfo)
4289                 return -EINVAL;
4290
4291         if (attrs[NL80211_ATTR_IE]) {
4292                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4293                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4294         }
4295
4296         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4297                 bcn->proberesp_ies =
4298                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4299                 bcn->proberesp_ies_len =
4300                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4301         }
4302
4303         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4304                 bcn->assocresp_ies =
4305                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4306                 bcn->assocresp_ies_len =
4307                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4308         }
4309
4310         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4311                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4312                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4313         }
4314
4315         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4316                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4317
4318                 err = nla_parse_nested_deprecated(tb,
4319                                                   NL80211_FTM_RESP_ATTR_MAX,
4320                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4321                                                   NULL, NULL);
4322                 if (err)
4323                         return err;
4324
4325                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4326                     wiphy_ext_feature_isset(&rdev->wiphy,
4327                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4328                         bcn->ftm_responder = 1;
4329                 else
4330                         return -EOPNOTSUPP;
4331
4332                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4333                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4334                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4335                 }
4336
4337                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4338                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4339                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4340                 }
4341         } else {
4342                 bcn->ftm_responder = -1;
4343         }
4344
4345         return 0;
4346 }
4347
4348 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4349                                             const u8 *rates)
4350 {
4351         int i;
4352
4353         if (!rates)
4354                 return;
4355
4356         for (i = 0; i < rates[1]; i++) {
4357                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4358                         params->ht_required = true;
4359                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4360                         params->vht_required = true;
4361         }
4362 }
4363
4364 /*
4365  * Since the nl80211 API didn't include, from the beginning, attributes about
4366  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4367  * benefit of drivers that rebuild IEs in the firmware.
4368  */
4369 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4370 {
4371         const struct cfg80211_beacon_data *bcn = &params->beacon;
4372         size_t ies_len = bcn->tail_len;
4373         const u8 *ies = bcn->tail;
4374         const u8 *rates;
4375         const u8 *cap;
4376
4377         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4378         nl80211_check_ap_rate_selectors(params, rates);
4379
4380         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4381         nl80211_check_ap_rate_selectors(params, rates);
4382
4383         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4384         if (cap && cap[1] >= sizeof(*params->ht_cap))
4385                 params->ht_cap = (void *)(cap + 2);
4386         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4387         if (cap && cap[1] >= sizeof(*params->vht_cap))
4388                 params->vht_cap = (void *)(cap + 2);
4389         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4390         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4391                 params->he_cap = (void *)(cap + 3);
4392 }
4393
4394 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4395                                    struct cfg80211_ap_settings *params)
4396 {
4397         struct wireless_dev *wdev;
4398         bool ret = false;
4399
4400         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4401                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4402                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4403                         continue;
4404
4405                 if (!wdev->preset_chandef.chan)
4406                         continue;
4407
4408                 params->chandef = wdev->preset_chandef;
4409                 ret = true;
4410                 break;
4411         }
4412
4413         return ret;
4414 }
4415
4416 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4417                                     enum nl80211_auth_type auth_type,
4418                                     enum nl80211_commands cmd)
4419 {
4420         if (auth_type > NL80211_AUTHTYPE_MAX)
4421                 return false;
4422
4423         switch (cmd) {
4424         case NL80211_CMD_AUTHENTICATE:
4425                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4426                     auth_type == NL80211_AUTHTYPE_SAE)
4427                         return false;
4428                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4429                                              NL80211_EXT_FEATURE_FILS_STA) &&
4430                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4431                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4432                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4433                         return false;
4434                 return true;
4435         case NL80211_CMD_CONNECT:
4436                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4437                     auth_type == NL80211_AUTHTYPE_SAE)
4438                         return false;
4439
4440                 /* FILS with SK PFS or PK not supported yet */
4441                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4442                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4443                         return false;
4444                 if (!wiphy_ext_feature_isset(
4445                             &rdev->wiphy,
4446                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4447                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4448                         return false;
4449                 return true;
4450         case NL80211_CMD_START_AP:
4451                 /* SAE not supported yet */
4452                 if (auth_type == NL80211_AUTHTYPE_SAE)
4453                         return false;
4454                 /* FILS not supported yet */
4455                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4456                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4457                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4458                         return false;
4459                 return true;
4460         default:
4461                 return false;
4462         }
4463 }
4464
4465 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4466 {
4467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4468         struct net_device *dev = info->user_ptr[1];
4469         struct wireless_dev *wdev = dev->ieee80211_ptr;
4470         struct cfg80211_ap_settings params;
4471         int err;
4472
4473         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4474             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4475                 return -EOPNOTSUPP;
4476
4477         if (!rdev->ops->start_ap)
4478                 return -EOPNOTSUPP;
4479
4480         if (wdev->beacon_interval)
4481                 return -EALREADY;
4482
4483         memset(&params, 0, sizeof(params));
4484
4485         /* these are required for START_AP */
4486         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4487             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4488             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4489                 return -EINVAL;
4490
4491         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4492         if (err)
4493                 return err;
4494
4495         params.beacon_interval =
4496                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4497         params.dtim_period =
4498                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4499
4500         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4501                                            params.beacon_interval);
4502         if (err)
4503                 return err;
4504
4505         /*
4506          * In theory, some of these attributes should be required here
4507          * but since they were not used when the command was originally
4508          * added, keep them optional for old user space programs to let
4509          * them continue to work with drivers that do not need the
4510          * additional information -- drivers must check!
4511          */
4512         if (info->attrs[NL80211_ATTR_SSID]) {
4513                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4514                 params.ssid_len =
4515                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4516                 if (params.ssid_len == 0 ||
4517                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4518                         return -EINVAL;
4519         }
4520
4521         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4522                 params.hidden_ssid = nla_get_u32(
4523                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4524
4525         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4526
4527         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4528                 params.auth_type = nla_get_u32(
4529                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4530                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4531                                              NL80211_CMD_START_AP))
4532                         return -EINVAL;
4533         } else
4534                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4535
4536         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4537                                       NL80211_MAX_NR_CIPHER_SUITES);
4538         if (err)
4539                 return err;
4540
4541         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4542                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4543                         return -EOPNOTSUPP;
4544                 params.inactivity_timeout = nla_get_u16(
4545                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4546         }
4547
4548         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4549                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4550                         return -EINVAL;
4551                 params.p2p_ctwindow =
4552                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4553                 if (params.p2p_ctwindow != 0 &&
4554                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4555                         return -EINVAL;
4556         }
4557
4558         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4559                 u8 tmp;
4560
4561                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4562                         return -EINVAL;
4563                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4564                 params.p2p_opp_ps = tmp;
4565                 if (params.p2p_opp_ps != 0 &&
4566                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4567                         return -EINVAL;
4568         }
4569
4570         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4571                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4572                 if (err)
4573                         return err;
4574         } else if (wdev->preset_chandef.chan) {
4575                 params.chandef = wdev->preset_chandef;
4576         } else if (!nl80211_get_ap_channel(rdev, &params))
4577                 return -EINVAL;
4578
4579         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4580                                            wdev->iftype))
4581                 return -EINVAL;
4582
4583         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4584                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4585                 if (err)
4586                         return err;
4587
4588                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4589                                               &params.beacon_rate);
4590                 if (err)
4591                         return err;
4592         }
4593
4594         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4595                 params.smps_mode =
4596                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4597                 switch (params.smps_mode) {
4598                 case NL80211_SMPS_OFF:
4599                         break;
4600                 case NL80211_SMPS_STATIC:
4601                         if (!(rdev->wiphy.features &
4602                               NL80211_FEATURE_STATIC_SMPS))
4603                                 return -EINVAL;
4604                         break;
4605                 case NL80211_SMPS_DYNAMIC:
4606                         if (!(rdev->wiphy.features &
4607                               NL80211_FEATURE_DYNAMIC_SMPS))
4608                                 return -EINVAL;
4609                         break;
4610                 default:
4611                         return -EINVAL;
4612                 }
4613         } else {
4614                 params.smps_mode = NL80211_SMPS_OFF;
4615         }
4616
4617         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4618         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4619                 return -EOPNOTSUPP;
4620
4621         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4622                 params.acl = parse_acl_data(&rdev->wiphy, info);
4623                 if (IS_ERR(params.acl))
4624                         return PTR_ERR(params.acl);
4625         }
4626
4627         nl80211_calculate_ap_params(&params);
4628
4629         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4630                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4631
4632         wdev_lock(wdev);
4633         err = rdev_start_ap(rdev, dev, &params);
4634         if (!err) {
4635                 wdev->preset_chandef = params.chandef;
4636                 wdev->beacon_interval = params.beacon_interval;
4637                 wdev->chandef = params.chandef;
4638                 wdev->ssid_len = params.ssid_len;
4639                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4640
4641                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4642                         wdev->conn_owner_nlportid = info->snd_portid;
4643         }
4644         wdev_unlock(wdev);
4645
4646         kfree(params.acl);
4647
4648         return err;
4649 }
4650
4651 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4652 {
4653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4654         struct net_device *dev = info->user_ptr[1];
4655         struct wireless_dev *wdev = dev->ieee80211_ptr;
4656         struct cfg80211_beacon_data params;
4657         int err;
4658
4659         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4660             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4661                 return -EOPNOTSUPP;
4662
4663         if (!rdev->ops->change_beacon)
4664                 return -EOPNOTSUPP;
4665
4666         if (!wdev->beacon_interval)
4667                 return -EINVAL;
4668
4669         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4670         if (err)
4671                 return err;
4672
4673         wdev_lock(wdev);
4674         err = rdev_change_beacon(rdev, dev, &params);
4675         wdev_unlock(wdev);
4676
4677         return err;
4678 }
4679
4680 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4681 {
4682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4683         struct net_device *dev = info->user_ptr[1];
4684
4685         return cfg80211_stop_ap(rdev, dev, false);
4686 }
4687
4688 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4689         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4690         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4691         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4692         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4693         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4694         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4695 };
4696
4697 static int parse_station_flags(struct genl_info *info,
4698                                enum nl80211_iftype iftype,
4699                                struct station_parameters *params)
4700 {
4701         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4702         struct nlattr *nla;
4703         int flag;
4704
4705         /*
4706          * Try parsing the new attribute first so userspace
4707          * can specify both for older kernels.
4708          */
4709         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4710         if (nla) {
4711                 struct nl80211_sta_flag_update *sta_flags;
4712
4713                 sta_flags = nla_data(nla);
4714                 params->sta_flags_mask = sta_flags->mask;
4715                 params->sta_flags_set = sta_flags->set;
4716                 params->sta_flags_set &= params->sta_flags_mask;
4717                 if ((params->sta_flags_mask |
4718                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4719                         return -EINVAL;
4720                 return 0;
4721         }
4722
4723         /* if present, parse the old attribute */
4724
4725         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4726         if (!nla)
4727                 return 0;
4728
4729         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4730                 return -EINVAL;
4731
4732         /*
4733          * Only allow certain flags for interface types so that
4734          * other attributes are silently ignored. Remember that
4735          * this is backward compatibility code with old userspace
4736          * and shouldn't be hit in other cases anyway.
4737          */
4738         switch (iftype) {
4739         case NL80211_IFTYPE_AP:
4740         case NL80211_IFTYPE_AP_VLAN:
4741         case NL80211_IFTYPE_P2P_GO:
4742                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4743                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4744                                          BIT(NL80211_STA_FLAG_WME) |
4745                                          BIT(NL80211_STA_FLAG_MFP);
4746                 break;
4747         case NL80211_IFTYPE_P2P_CLIENT:
4748         case NL80211_IFTYPE_STATION:
4749                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4750                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4751                 break;
4752         case NL80211_IFTYPE_MESH_POINT:
4753                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4754                                          BIT(NL80211_STA_FLAG_MFP) |
4755                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4756                 break;
4757         default:
4758                 return -EINVAL;
4759         }
4760
4761         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4762                 if (flags[flag]) {
4763                         params->sta_flags_set |= (1<<flag);
4764
4765                         /* no longer support new API additions in old API */
4766                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4767                                 return -EINVAL;
4768                 }
4769         }
4770
4771         return 0;
4772 }
4773
4774 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4775 {
4776         struct nlattr *rate;
4777         u32 bitrate;
4778         u16 bitrate_compat;
4779         enum nl80211_rate_info rate_flg;
4780
4781         rate = nla_nest_start_noflag(msg, attr);
4782         if (!rate)
4783                 return false;
4784
4785         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4786         bitrate = cfg80211_calculate_bitrate(info);
4787         /* report 16-bit bitrate only if we can */
4788         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4789         if (bitrate > 0 &&
4790             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4791                 return false;
4792         if (bitrate_compat > 0 &&
4793             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4794                 return false;
4795
4796         switch (info->bw) {
4797         case RATE_INFO_BW_5:
4798                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4799                 break;
4800         case RATE_INFO_BW_10:
4801                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4802                 break;
4803         default:
4804                 WARN_ON(1);
4805                 /* fall through */
4806         case RATE_INFO_BW_20:
4807                 rate_flg = 0;
4808                 break;
4809         case RATE_INFO_BW_40:
4810                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4811                 break;
4812         case RATE_INFO_BW_80:
4813                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4814                 break;
4815         case RATE_INFO_BW_160:
4816                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4817                 break;
4818         case RATE_INFO_BW_HE_RU:
4819                 rate_flg = 0;
4820                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4821         }
4822
4823         if (rate_flg && nla_put_flag(msg, rate_flg))
4824                 return false;
4825
4826         if (info->flags & RATE_INFO_FLAGS_MCS) {
4827                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4828                         return false;
4829                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4830                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4831                         return false;
4832         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4833                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4834                         return false;
4835                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4836                         return false;
4837                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4838                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4839                         return false;
4840         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4841                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4842                         return false;
4843                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4844                         return false;
4845                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4846                         return false;
4847                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4848                         return false;
4849                 if (info->bw == RATE_INFO_BW_HE_RU &&
4850                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4851                                info->he_ru_alloc))
4852                         return false;
4853         }
4854
4855         nla_nest_end(msg, rate);
4856         return true;
4857 }
4858
4859 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4860                                int id)
4861 {
4862         void *attr;
4863         int i = 0;
4864
4865         if (!mask)
4866                 return true;
4867
4868         attr = nla_nest_start_noflag(msg, id);
4869         if (!attr)
4870                 return false;
4871
4872         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4873                 if (!(mask & BIT(i)))
4874                         continue;
4875
4876                 if (nla_put_u8(msg, i, signal[i]))
4877                         return false;
4878         }
4879
4880         nla_nest_end(msg, attr);
4881
4882         return true;
4883 }
4884
4885 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4886                                 u32 seq, int flags,
4887                                 struct cfg80211_registered_device *rdev,
4888                                 struct net_device *dev,
4889                                 const u8 *mac_addr, struct station_info *sinfo)
4890 {
4891         void *hdr;
4892         struct nlattr *sinfoattr, *bss_param;
4893
4894         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4895         if (!hdr)
4896                 return -1;
4897
4898         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4899             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4900             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4901                 goto nla_put_failure;
4902
4903         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
4904         if (!sinfoattr)
4905                 goto nla_put_failure;
4906
4907 #define PUT_SINFO(attr, memb, type) do {                                \
4908         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4909         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
4910             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4911                              sinfo->memb))                              \
4912                 goto nla_put_failure;                                   \
4913         } while (0)
4914 #define PUT_SINFO_U64(attr, memb) do {                                  \
4915         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
4916             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4917                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4918                 goto nla_put_failure;                                   \
4919         } while (0)
4920
4921         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4922         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4923
4924         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
4925                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
4926             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4927                         (u32)sinfo->rx_bytes))
4928                 goto nla_put_failure;
4929
4930         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
4931                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
4932             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4933                         (u32)sinfo->tx_bytes))
4934                 goto nla_put_failure;
4935
4936         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4937         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4938         PUT_SINFO(LLID, llid, u16);
4939         PUT_SINFO(PLID, plid, u16);
4940         PUT_SINFO(PLINK_STATE, plink_state, u8);
4941         PUT_SINFO_U64(RX_DURATION, rx_duration);
4942         PUT_SINFO_U64(TX_DURATION, tx_duration);
4943
4944         if (wiphy_ext_feature_isset(&rdev->wiphy,
4945                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
4946                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
4947
4948         switch (rdev->wiphy.signal_type) {
4949         case CFG80211_SIGNAL_TYPE_MBM:
4950                 PUT_SINFO(SIGNAL, signal, u8);
4951                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4952                 break;
4953         default:
4954                 break;
4955         }
4956         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4957                 if (!nl80211_put_signal(msg, sinfo->chains,
4958                                         sinfo->chain_signal,
4959                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4960                         goto nla_put_failure;
4961         }
4962         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4963                 if (!nl80211_put_signal(msg, sinfo->chains,
4964                                         sinfo->chain_signal_avg,
4965                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4966                         goto nla_put_failure;
4967         }
4968         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
4969                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4970                                           NL80211_STA_INFO_TX_BITRATE))
4971                         goto nla_put_failure;
4972         }
4973         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
4974                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4975                                           NL80211_STA_INFO_RX_BITRATE))
4976                         goto nla_put_failure;
4977         }
4978
4979         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4980         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4981         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4982         PUT_SINFO(TX_FAILED, tx_failed, u32);
4983         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4984         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
4985         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4986         PUT_SINFO(LOCAL_PM, local_pm, u32);
4987         PUT_SINFO(PEER_PM, peer_pm, u32);
4988         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4989         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
4990
4991         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
4992                 bss_param = nla_nest_start_noflag(msg,
4993                                                   NL80211_STA_INFO_BSS_PARAM);
4994                 if (!bss_param)
4995                         goto nla_put_failure;
4996
4997                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4998                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4999                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5000                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5001                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5002                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5003                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5004                                sinfo->bss_param.dtim_period) ||
5005                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5006                                 sinfo->bss_param.beacon_interval))
5007                         goto nla_put_failure;
5008
5009                 nla_nest_end(msg, bss_param);
5010         }
5011         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5012             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5013                     sizeof(struct nl80211_sta_flag_update),
5014                     &sinfo->sta_flags))
5015                 goto nla_put_failure;
5016
5017         PUT_SINFO_U64(T_OFFSET, t_offset);
5018         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5019         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5020         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5021         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5022         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5023         if (wiphy_ext_feature_isset(&rdev->wiphy,
5024                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5025                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5026                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5027         }
5028
5029 #undef PUT_SINFO
5030 #undef PUT_SINFO_U64
5031
5032         if (sinfo->pertid) {
5033                 struct nlattr *tidsattr;
5034                 int tid;
5035
5036                 tidsattr = nla_nest_start_noflag(msg,
5037                                                  NL80211_STA_INFO_TID_STATS);
5038                 if (!tidsattr)
5039                         goto nla_put_failure;
5040
5041                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5042                         struct cfg80211_tid_stats *tidstats;
5043                         struct nlattr *tidattr;
5044
5045                         tidstats = &sinfo->pertid[tid];
5046
5047                         if (!tidstats->filled)
5048                                 continue;
5049
5050                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5051                         if (!tidattr)
5052                                 goto nla_put_failure;
5053
5054 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5055         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5056             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5057                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5058                 goto nla_put_failure;                                   \
5059         } while (0)
5060
5061                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5062                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5063                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5064                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5065
5066 #undef PUT_TIDVAL_U64
5067                         if ((tidstats->filled &
5068                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5069                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5070                                                    NL80211_TID_STATS_TXQ_STATS))
5071                                 goto nla_put_failure;
5072
5073                         nla_nest_end(msg, tidattr);
5074                 }
5075
5076                 nla_nest_end(msg, tidsattr);
5077         }
5078
5079         nla_nest_end(msg, sinfoattr);
5080
5081         if (sinfo->assoc_req_ies_len &&
5082             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5083                     sinfo->assoc_req_ies))
5084                 goto nla_put_failure;
5085
5086         cfg80211_sinfo_release_content(sinfo);
5087         genlmsg_end(msg, hdr);
5088         return 0;
5089
5090  nla_put_failure:
5091         cfg80211_sinfo_release_content(sinfo);
5092         genlmsg_cancel(msg, hdr);
5093         return -EMSGSIZE;
5094 }
5095
5096 static int nl80211_dump_station(struct sk_buff *skb,
5097                                 struct netlink_callback *cb)
5098 {
5099         struct station_info sinfo;
5100         struct cfg80211_registered_device *rdev;
5101         struct wireless_dev *wdev;
5102         u8 mac_addr[ETH_ALEN];
5103         int sta_idx = cb->args[2];
5104         int err;
5105
5106         rtnl_lock();
5107         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5108         if (err)
5109                 goto out_err;
5110
5111         if (!wdev->netdev) {
5112                 err = -EINVAL;
5113                 goto out_err;
5114         }
5115
5116         if (!rdev->ops->dump_station) {
5117                 err = -EOPNOTSUPP;
5118                 goto out_err;
5119         }
5120
5121         while (1) {
5122                 memset(&sinfo, 0, sizeof(sinfo));
5123                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5124                                         mac_addr, &sinfo);
5125                 if (err == -ENOENT)
5126                         break;
5127                 if (err)
5128                         goto out_err;
5129
5130                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5131                                 NETLINK_CB(cb->skb).portid,
5132                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5133                                 rdev, wdev->netdev, mac_addr,
5134                                 &sinfo) < 0)
5135                         goto out;
5136
5137                 sta_idx++;
5138         }
5139
5140  out:
5141         cb->args[2] = sta_idx;
5142         err = skb->len;
5143  out_err:
5144         rtnl_unlock();
5145
5146         return err;
5147 }
5148
5149 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5150 {
5151         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5152         struct net_device *dev = info->user_ptr[1];
5153         struct station_info sinfo;
5154         struct sk_buff *msg;
5155         u8 *mac_addr = NULL;
5156         int err;
5157
5158         memset(&sinfo, 0, sizeof(sinfo));
5159
5160         if (!info->attrs[NL80211_ATTR_MAC])
5161                 return -EINVAL;
5162
5163         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5164
5165         if (!rdev->ops->get_station)
5166                 return -EOPNOTSUPP;
5167
5168         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5169         if (err)
5170                 return err;
5171
5172         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5173         if (!msg) {
5174                 cfg80211_sinfo_release_content(&sinfo);
5175                 return -ENOMEM;
5176         }
5177
5178         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5179                                  info->snd_portid, info->snd_seq, 0,
5180                                  rdev, dev, mac_addr, &sinfo) < 0) {
5181                 nlmsg_free(msg);
5182                 return -ENOBUFS;
5183         }
5184
5185         return genlmsg_reply(msg, info);
5186 }
5187
5188 int cfg80211_check_station_change(struct wiphy *wiphy,
5189                                   struct station_parameters *params,
5190                                   enum cfg80211_station_type statype)
5191 {
5192         if (params->listen_interval != -1 &&
5193             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5194                 return -EINVAL;
5195
5196         if (params->support_p2p_ps != -1 &&
5197             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5198                 return -EINVAL;
5199
5200         if (params->aid &&
5201             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5202             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5203                 return -EINVAL;
5204
5205         /* When you run into this, adjust the code below for the new flag */
5206         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5207
5208         switch (statype) {
5209         case CFG80211_STA_MESH_PEER_KERNEL:
5210         case CFG80211_STA_MESH_PEER_USER:
5211                 /*
5212                  * No ignoring the TDLS flag here -- the userspace mesh
5213                  * code doesn't have the bug of including TDLS in the
5214                  * mask everywhere.
5215                  */
5216                 if (params->sta_flags_mask &
5217                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5218                                   BIT(NL80211_STA_FLAG_MFP) |
5219                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5220                         return -EINVAL;
5221                 break;
5222         case CFG80211_STA_TDLS_PEER_SETUP:
5223         case CFG80211_STA_TDLS_PEER_ACTIVE:
5224                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5225                         return -EINVAL;
5226                 /* ignore since it can't change */
5227                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5228                 break;
5229         default:
5230                 /* disallow mesh-specific things */
5231                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5232                         return -EINVAL;
5233                 if (params->local_pm)
5234                         return -EINVAL;
5235                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5236                         return -EINVAL;
5237         }
5238
5239         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5240             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5241                 /* TDLS can't be set, ... */
5242                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5243                         return -EINVAL;
5244                 /*
5245                  * ... but don't bother the driver with it. This works around
5246                  * a hostapd/wpa_supplicant issue -- it always includes the
5247                  * TLDS_PEER flag in the mask even for AP mode.
5248                  */
5249                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5250         }
5251
5252         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5253             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5254                 /* reject other things that can't change */
5255                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5256                         return -EINVAL;
5257                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5258                         return -EINVAL;
5259                 if (params->supported_rates)
5260                         return -EINVAL;
5261                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5262                     params->he_capa)
5263                         return -EINVAL;
5264         }
5265
5266         if (statype != CFG80211_STA_AP_CLIENT &&
5267             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5268                 if (params->vlan)
5269                         return -EINVAL;
5270         }
5271
5272         switch (statype) {
5273         case CFG80211_STA_AP_MLME_CLIENT:
5274                 /* Use this only for authorizing/unauthorizing a station */
5275                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5276                         return -EOPNOTSUPP;
5277                 break;
5278         case CFG80211_STA_AP_CLIENT:
5279         case CFG80211_STA_AP_CLIENT_UNASSOC:
5280                 /* accept only the listed bits */
5281                 if (params->sta_flags_mask &
5282                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5283                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5284                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5285                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5286                                   BIT(NL80211_STA_FLAG_WME) |
5287                                   BIT(NL80211_STA_FLAG_MFP)))
5288                         return -EINVAL;
5289
5290                 /* but authenticated/associated only if driver handles it */
5291                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5292                     params->sta_flags_mask &
5293                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5294                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5295                         return -EINVAL;
5296                 break;
5297         case CFG80211_STA_IBSS:
5298         case CFG80211_STA_AP_STA:
5299                 /* reject any changes other than AUTHORIZED */
5300                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5301                         return -EINVAL;
5302                 break;
5303         case CFG80211_STA_TDLS_PEER_SETUP:
5304                 /* reject any changes other than AUTHORIZED or WME */
5305                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5306                                                BIT(NL80211_STA_FLAG_WME)))
5307                         return -EINVAL;
5308                 /* force (at least) rates when authorizing */
5309                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5310                     !params->supported_rates)
5311                         return -EINVAL;
5312                 break;
5313         case CFG80211_STA_TDLS_PEER_ACTIVE:
5314                 /* reject any changes */
5315                 return -EINVAL;
5316         case CFG80211_STA_MESH_PEER_KERNEL:
5317                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5318                         return -EINVAL;
5319                 break;
5320         case CFG80211_STA_MESH_PEER_USER:
5321                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5322                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5323                         return -EINVAL;
5324                 break;
5325         }
5326
5327         /*
5328          * Older kernel versions ignored this attribute entirely, so don't
5329          * reject attempts to update it but mark it as unused instead so the
5330          * driver won't look at the data.
5331          */
5332         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5333             statype != CFG80211_STA_TDLS_PEER_SETUP)
5334                 params->opmode_notif_used = false;
5335
5336         return 0;
5337 }
5338 EXPORT_SYMBOL(cfg80211_check_station_change);
5339
5340 /*
5341  * Get vlan interface making sure it is running and on the right wiphy.
5342  */
5343 static struct net_device *get_vlan(struct genl_info *info,
5344                                    struct cfg80211_registered_device *rdev)
5345 {
5346         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5347         struct net_device *v;
5348         int ret;
5349
5350         if (!vlanattr)
5351                 return NULL;
5352
5353         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5354         if (!v)
5355                 return ERR_PTR(-ENODEV);
5356
5357         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5358                 ret = -EINVAL;
5359                 goto error;
5360         }
5361
5362         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5363             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5364             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5365                 ret = -EINVAL;
5366                 goto error;
5367         }
5368
5369         if (!netif_running(v)) {
5370                 ret = -ENETDOWN;
5371                 goto error;
5372         }
5373
5374         return v;
5375  error:
5376         dev_put(v);
5377         return ERR_PTR(ret);
5378 }
5379
5380 static const struct nla_policy
5381 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5382         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5383         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5384 };
5385
5386 static int nl80211_parse_sta_wme(struct genl_info *info,
5387                                  struct station_parameters *params)
5388 {
5389         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5390         struct nlattr *nla;
5391         int err;
5392
5393         /* parse WME attributes if present */
5394         if (!info->attrs[NL80211_ATTR_STA_WME])
5395                 return 0;
5396
5397         nla = info->attrs[NL80211_ATTR_STA_WME];
5398         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5399                                           nl80211_sta_wme_policy,
5400                                           info->extack);
5401         if (err)
5402                 return err;
5403
5404         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5405                 params->uapsd_queues = nla_get_u8(
5406                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5407         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5408                 return -EINVAL;
5409
5410         if (tb[NL80211_STA_WME_MAX_SP])
5411                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5412
5413         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5414                 return -EINVAL;
5415
5416         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5417
5418         return 0;
5419 }
5420
5421 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5422                                       struct station_parameters *params)
5423 {
5424         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5425                 params->supported_channels =
5426                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5427                 params->supported_channels_len =
5428                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5429                 /*
5430                  * Need to include at least one (first channel, number of
5431                  * channels) tuple for each subband, and must have proper
5432                  * tuples for the rest of the data as well.
5433                  */
5434                 if (params->supported_channels_len < 2)
5435                         return -EINVAL;
5436                 if (params->supported_channels_len % 2)
5437                         return -EINVAL;
5438         }
5439
5440         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5441                 params->supported_oper_classes =
5442                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5443                 params->supported_oper_classes_len =
5444                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5445                 /*
5446                  * The value of the Length field of the Supported Operating
5447                  * Classes element is between 2 and 253.
5448                  */
5449                 if (params->supported_oper_classes_len < 2 ||
5450                     params->supported_oper_classes_len > 253)
5451                         return -EINVAL;
5452         }
5453         return 0;
5454 }
5455
5456 static int nl80211_set_station_tdls(struct genl_info *info,
5457                                     struct station_parameters *params)
5458 {
5459         int err;
5460         /* Dummy STA entry gets updated once the peer capabilities are known */
5461         if (info->attrs[NL80211_ATTR_PEER_AID])
5462                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5463         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5464                 params->ht_capa =
5465                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5466         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5467                 params->vht_capa =
5468                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5469         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5470                 params->he_capa =
5471                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5472                 params->he_capa_len =
5473                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5474
5475                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5476                         return -EINVAL;
5477         }
5478
5479         err = nl80211_parse_sta_channel_info(info, params);
5480         if (err)
5481                 return err;
5482
5483         return nl80211_parse_sta_wme(info, params);
5484 }
5485
5486 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5487                                              struct station_parameters *params)
5488 {
5489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5490         int idx;
5491
5492         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5493                 if (!rdev->ops->set_tx_power ||
5494                     !wiphy_ext_feature_isset(&rdev->wiphy,
5495                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5496                         return -EOPNOTSUPP;
5497
5498                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5499                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5500
5501                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5502                         idx = NL80211_ATTR_STA_TX_POWER;
5503
5504                         if (info->attrs[idx])
5505                                 params->txpwr.power =
5506                                         nla_get_s16(info->attrs[idx]);
5507                         else
5508                                 return -EINVAL;
5509                 }
5510                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5511         }
5512
5513         return 0;
5514 }
5515
5516 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5517 {
5518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5519         struct net_device *dev = info->user_ptr[1];
5520         struct station_parameters params;
5521         u8 *mac_addr;
5522         int err;
5523
5524         memset(&params, 0, sizeof(params));
5525
5526         if (!rdev->ops->change_station)
5527                 return -EOPNOTSUPP;
5528
5529         /*
5530          * AID and listen_interval properties can be set only for unassociated
5531          * station. Include these parameters here and will check them in
5532          * cfg80211_check_station_change().
5533          */
5534         if (info->attrs[NL80211_ATTR_STA_AID])
5535                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5536
5537         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5538                 params.listen_interval =
5539                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5540         else
5541                 params.listen_interval = -1;
5542
5543         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5544                 params.support_p2p_ps =
5545                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5546         else
5547                 params.support_p2p_ps = -1;
5548
5549         if (!info->attrs[NL80211_ATTR_MAC])
5550                 return -EINVAL;
5551
5552         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5553
5554         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5555                 params.supported_rates =
5556                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5557                 params.supported_rates_len =
5558                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5559         }
5560
5561         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5562                 params.capability =
5563                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5564                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5565         }
5566
5567         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5568                 params.ext_capab =
5569                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5570                 params.ext_capab_len =
5571                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5572         }
5573
5574         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5575                 return -EINVAL;
5576
5577         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5578                 params.plink_action =
5579                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5580
5581         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5582                 params.plink_state =
5583                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5584                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5585                         params.peer_aid = nla_get_u16(
5586                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5587                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5588         }
5589
5590         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5591                 params.local_pm = nla_get_u32(
5592                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5593
5594         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5595                 params.opmode_notif_used = true;
5596                 params.opmode_notif =
5597                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5598         }
5599
5600         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5601                 params.airtime_weight =
5602                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5603
5604         if (params.airtime_weight &&
5605             !wiphy_ext_feature_isset(&rdev->wiphy,
5606                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5607                 return -EOPNOTSUPP;
5608
5609         err = nl80211_parse_sta_txpower_setting(info, &params);
5610         if (err)
5611                 return err;
5612
5613         /* Include parameters for TDLS peer (will check later) */
5614         err = nl80211_set_station_tdls(info, &params);
5615         if (err)
5616                 return err;
5617
5618         params.vlan = get_vlan(info, rdev);
5619         if (IS_ERR(params.vlan))
5620                 return PTR_ERR(params.vlan);
5621
5622         switch (dev->ieee80211_ptr->iftype) {
5623         case NL80211_IFTYPE_AP:
5624         case NL80211_IFTYPE_AP_VLAN:
5625         case NL80211_IFTYPE_P2P_GO:
5626         case NL80211_IFTYPE_P2P_CLIENT:
5627         case NL80211_IFTYPE_STATION:
5628         case NL80211_IFTYPE_ADHOC:
5629         case NL80211_IFTYPE_MESH_POINT:
5630                 break;
5631         default:
5632                 err = -EOPNOTSUPP;
5633                 goto out_put_vlan;
5634         }
5635
5636         /* driver will call cfg80211_check_station_change() */
5637         err = rdev_change_station(rdev, dev, mac_addr, &params);
5638
5639  out_put_vlan:
5640         if (params.vlan)
5641                 dev_put(params.vlan);
5642
5643         return err;
5644 }
5645
5646 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5647 {
5648         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5649         int err;
5650         struct net_device *dev = info->user_ptr[1];
5651         struct station_parameters params;
5652         u8 *mac_addr = NULL;
5653         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5654                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5655
5656         memset(&params, 0, sizeof(params));
5657
5658         if (!rdev->ops->add_station)
5659                 return -EOPNOTSUPP;
5660
5661         if (!info->attrs[NL80211_ATTR_MAC])
5662                 return -EINVAL;
5663
5664         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5665                 return -EINVAL;
5666
5667         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5668                 return -EINVAL;
5669
5670         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5671             !info->attrs[NL80211_ATTR_PEER_AID])
5672                 return -EINVAL;
5673
5674         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5675         params.supported_rates =
5676                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5677         params.supported_rates_len =
5678                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5679         params.listen_interval =
5680                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5681
5682         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5683                 params.support_p2p_ps =
5684                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5685         } else {
5686                 /*
5687                  * if not specified, assume it's supported for P2P GO interface,
5688                  * and is NOT supported for AP interface
5689                  */
5690                 params.support_p2p_ps =
5691                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5692         }
5693
5694         if (info->attrs[NL80211_ATTR_PEER_AID])
5695                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5696         else
5697                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5698
5699         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5700                 params.capability =
5701                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5702                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5703         }
5704
5705         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5706                 params.ext_capab =
5707                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5708                 params.ext_capab_len =
5709                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5710         }
5711
5712         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5713                 params.ht_capa =
5714                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5715
5716         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5717                 params.vht_capa =
5718                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5719
5720         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5721                 params.he_capa =
5722                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5723                 params.he_capa_len =
5724                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5725
5726                 /* max len is validated in nla policy */
5727                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5728                         return -EINVAL;
5729         }
5730
5731         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5732                 params.opmode_notif_used = true;
5733                 params.opmode_notif =
5734                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5735         }
5736
5737         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5738                 params.plink_action =
5739                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5740
5741         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5742                 params.airtime_weight =
5743                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5744
5745         if (params.airtime_weight &&
5746             !wiphy_ext_feature_isset(&rdev->wiphy,
5747                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5748                 return -EOPNOTSUPP;
5749
5750         err = nl80211_parse_sta_txpower_setting(info, &params);
5751         if (err)
5752                 return err;
5753
5754         err = nl80211_parse_sta_channel_info(info, &params);
5755         if (err)
5756                 return err;
5757
5758         err = nl80211_parse_sta_wme(info, &params);
5759         if (err)
5760                 return err;
5761
5762         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5763                 return -EINVAL;
5764
5765         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5766          * as userspace might just pass through the capabilities from the IEs
5767          * directly, rather than enforcing this restriction and returning an
5768          * error in this case.
5769          */
5770         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5771                 params.ht_capa = NULL;
5772                 params.vht_capa = NULL;
5773
5774                 /* HE requires WME */
5775                 if (params.he_capa_len)
5776                         return -EINVAL;
5777         }
5778
5779         /* When you run into this, adjust the code below for the new flag */
5780         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5781
5782         switch (dev->ieee80211_ptr->iftype) {
5783         case NL80211_IFTYPE_AP:
5784         case NL80211_IFTYPE_AP_VLAN:
5785         case NL80211_IFTYPE_P2P_GO:
5786                 /* ignore WME attributes if iface/sta is not capable */
5787                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5788                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5789                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5790
5791                 /* TDLS peers cannot be added */
5792                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5793                     info->attrs[NL80211_ATTR_PEER_AID])
5794                         return -EINVAL;
5795                 /* but don't bother the driver with it */
5796                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5797
5798                 /* allow authenticated/associated only if driver handles it */
5799                 if (!(rdev->wiphy.features &
5800                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5801                     params.sta_flags_mask & auth_assoc)
5802                         return -EINVAL;
5803
5804                 /* Older userspace, or userspace wanting to be compatible with
5805                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5806                  * and assoc flags in the mask, but assumes the station will be
5807                  * added as associated anyway since this was the required driver
5808                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5809                  * introduced.
5810                  * In order to not bother drivers with this quirk in the API
5811                  * set the flags in both the mask and set for new stations in
5812                  * this case.
5813                  */
5814                 if (!(params.sta_flags_mask & auth_assoc)) {
5815                         params.sta_flags_mask |= auth_assoc;
5816                         params.sta_flags_set |= auth_assoc;
5817                 }
5818
5819                 /* must be last in here for error handling */
5820                 params.vlan = get_vlan(info, rdev);
5821                 if (IS_ERR(params.vlan))
5822                         return PTR_ERR(params.vlan);
5823                 break;
5824         case NL80211_IFTYPE_MESH_POINT:
5825                 /* ignore uAPSD data */
5826                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5827
5828                 /* associated is disallowed */
5829                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5830                         return -EINVAL;
5831                 /* TDLS peers cannot be added */
5832                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5833                     info->attrs[NL80211_ATTR_PEER_AID])
5834                         return -EINVAL;
5835                 break;
5836         case NL80211_IFTYPE_STATION:
5837         case NL80211_IFTYPE_P2P_CLIENT:
5838                 /* ignore uAPSD data */
5839                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5840
5841                 /* these are disallowed */
5842                 if (params.sta_flags_mask &
5843                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5844                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5845                         return -EINVAL;
5846                 /* Only TDLS peers can be added */
5847                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5848                         return -EINVAL;
5849                 /* Can only add if TDLS ... */
5850                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5851                         return -EOPNOTSUPP;
5852                 /* ... with external setup is supported */
5853                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5854                         return -EOPNOTSUPP;
5855                 /*
5856                  * Older wpa_supplicant versions always mark the TDLS peer
5857                  * as authorized, but it shouldn't yet be.
5858                  */
5859                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5860                 break;
5861         default:
5862                 return -EOPNOTSUPP;
5863         }
5864
5865         /* be aware of params.vlan when changing code here */
5866
5867         err = rdev_add_station(rdev, dev, mac_addr, &params);
5868
5869         if (params.vlan)
5870                 dev_put(params.vlan);
5871         return err;
5872 }
5873
5874 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5875 {
5876         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5877         struct net_device *dev = info->user_ptr[1];
5878         struct station_del_parameters params;
5879
5880         memset(&params, 0, sizeof(params));
5881
5882         if (info->attrs[NL80211_ATTR_MAC])
5883                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5884
5885         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5886             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5887             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5888             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5889                 return -EINVAL;
5890
5891         if (!rdev->ops->del_station)
5892                 return -EOPNOTSUPP;
5893
5894         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5895                 params.subtype =
5896                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5897                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5898                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5899                         return -EINVAL;
5900         } else {
5901                 /* Default to Deauthentication frame */
5902                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5903         }
5904
5905         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5906                 params.reason_code =
5907                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5908                 if (params.reason_code == 0)
5909                         return -EINVAL; /* 0 is reserved */
5910         } else {
5911                 /* Default to reason code 2 */
5912                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5913         }
5914
5915         return rdev_del_station(rdev, dev, &params);
5916 }
5917
5918 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5919                                 int flags, struct net_device *dev,
5920                                 u8 *dst, u8 *next_hop,
5921                                 struct mpath_info *pinfo)
5922 {
5923         void *hdr;
5924         struct nlattr *pinfoattr;
5925
5926         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5927         if (!hdr)
5928                 return -1;
5929
5930         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5931             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5932             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5933             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5934                 goto nla_put_failure;
5935
5936         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
5937         if (!pinfoattr)
5938                 goto nla_put_failure;
5939         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5940             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5941                         pinfo->frame_qlen))
5942                 goto nla_put_failure;
5943         if (((pinfo->filled & MPATH_INFO_SN) &&
5944              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5945             ((pinfo->filled & MPATH_INFO_METRIC) &&
5946              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5947                          pinfo->metric)) ||
5948             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5949              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5950                          pinfo->exptime)) ||
5951             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5952              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5953                         pinfo->flags)) ||
5954             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5955              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5956                          pinfo->discovery_timeout)) ||
5957             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5958              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5959                         pinfo->discovery_retries)) ||
5960             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
5961              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
5962                         pinfo->hop_count)) ||
5963             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
5964              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
5965                          pinfo->path_change_count)))
5966                 goto nla_put_failure;
5967
5968         nla_nest_end(msg, pinfoattr);
5969
5970         genlmsg_end(msg, hdr);
5971         return 0;
5972
5973  nla_put_failure:
5974         genlmsg_cancel(msg, hdr);
5975         return -EMSGSIZE;
5976 }
5977
5978 static int nl80211_dump_mpath(struct sk_buff *skb,
5979                               struct netlink_callback *cb)
5980 {
5981         struct mpath_info pinfo;
5982         struct cfg80211_registered_device *rdev;
5983         struct wireless_dev *wdev;
5984         u8 dst[ETH_ALEN];
5985         u8 next_hop[ETH_ALEN];
5986         int path_idx = cb->args[2];
5987         int err;
5988
5989         rtnl_lock();
5990         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5991         if (err)
5992                 goto out_err;
5993
5994         if (!rdev->ops->dump_mpath) {
5995                 err = -EOPNOTSUPP;
5996                 goto out_err;
5997         }
5998
5999         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6000                 err = -EOPNOTSUPP;
6001                 goto out_err;
6002         }
6003
6004         while (1) {
6005                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6006                                       next_hop, &pinfo);
6007                 if (err == -ENOENT)
6008                         break;
6009                 if (err)
6010                         goto out_err;
6011
6012                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6013                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6014                                        wdev->netdev, dst, next_hop,
6015                                        &pinfo) < 0)
6016                         goto out;
6017
6018                 path_idx++;
6019         }
6020
6021  out:
6022         cb->args[2] = path_idx;
6023         err = skb->len;
6024  out_err:
6025         rtnl_unlock();
6026         return err;
6027 }
6028
6029 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6030 {
6031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6032         int err;
6033         struct net_device *dev = info->user_ptr[1];
6034         struct mpath_info pinfo;
6035         struct sk_buff *msg;
6036         u8 *dst = NULL;
6037         u8 next_hop[ETH_ALEN];
6038
6039         memset(&pinfo, 0, sizeof(pinfo));
6040
6041         if (!info->attrs[NL80211_ATTR_MAC])
6042                 return -EINVAL;
6043
6044         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6045
6046         if (!rdev->ops->get_mpath)
6047                 return -EOPNOTSUPP;
6048
6049         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6050                 return -EOPNOTSUPP;
6051
6052         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6053         if (err)
6054                 return err;
6055
6056         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6057         if (!msg)
6058                 return -ENOMEM;
6059
6060         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6061                                  dev, dst, next_hop, &pinfo) < 0) {
6062                 nlmsg_free(msg);
6063                 return -ENOBUFS;
6064         }
6065
6066         return genlmsg_reply(msg, info);
6067 }
6068
6069 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6070 {
6071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6072         struct net_device *dev = info->user_ptr[1];
6073         u8 *dst = NULL;
6074         u8 *next_hop = NULL;
6075
6076         if (!info->attrs[NL80211_ATTR_MAC])
6077                 return -EINVAL;
6078
6079         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6080                 return -EINVAL;
6081
6082         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6083         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6084
6085         if (!rdev->ops->change_mpath)
6086                 return -EOPNOTSUPP;
6087
6088         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6089                 return -EOPNOTSUPP;
6090
6091         return rdev_change_mpath(rdev, dev, dst, next_hop);
6092 }
6093
6094 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6095 {
6096         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6097         struct net_device *dev = info->user_ptr[1];
6098         u8 *dst = NULL;
6099         u8 *next_hop = NULL;
6100
6101         if (!info->attrs[NL80211_ATTR_MAC])
6102                 return -EINVAL;
6103
6104         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6105                 return -EINVAL;
6106
6107         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6108         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6109
6110         if (!rdev->ops->add_mpath)
6111                 return -EOPNOTSUPP;
6112
6113         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6114                 return -EOPNOTSUPP;
6115
6116         return rdev_add_mpath(rdev, dev, dst, next_hop);
6117 }
6118
6119 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6120 {
6121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6122         struct net_device *dev = info->user_ptr[1];
6123         u8 *dst = NULL;
6124
6125         if (info->attrs[NL80211_ATTR_MAC])
6126                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6127
6128         if (!rdev->ops->del_mpath)
6129                 return -EOPNOTSUPP;
6130
6131         return rdev_del_mpath(rdev, dev, dst);
6132 }
6133
6134 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6135 {
6136         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6137         int err;
6138         struct net_device *dev = info->user_ptr[1];
6139         struct mpath_info pinfo;
6140         struct sk_buff *msg;
6141         u8 *dst = NULL;
6142         u8 mpp[ETH_ALEN];
6143
6144         memset(&pinfo, 0, sizeof(pinfo));
6145
6146         if (!info->attrs[NL80211_ATTR_MAC])
6147                 return -EINVAL;
6148
6149         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6150
6151         if (!rdev->ops->get_mpp)
6152                 return -EOPNOTSUPP;
6153
6154         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6155                 return -EOPNOTSUPP;
6156
6157         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6158         if (err)
6159                 return err;
6160
6161         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6162         if (!msg)
6163                 return -ENOMEM;
6164
6165         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6166                                dev, dst, mpp, &pinfo) < 0) {
6167                 nlmsg_free(msg);
6168                 return -ENOBUFS;
6169         }
6170
6171         return genlmsg_reply(msg, info);
6172 }
6173
6174 static int nl80211_dump_mpp(struct sk_buff *skb,
6175                             struct netlink_callback *cb)
6176 {
6177         struct mpath_info pinfo;
6178         struct cfg80211_registered_device *rdev;
6179         struct wireless_dev *wdev;
6180         u8 dst[ETH_ALEN];
6181         u8 mpp[ETH_ALEN];
6182         int path_idx = cb->args[2];
6183         int err;
6184
6185         rtnl_lock();
6186         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6187         if (err)
6188                 goto out_err;
6189
6190         if (!rdev->ops->dump_mpp) {
6191                 err = -EOPNOTSUPP;
6192                 goto out_err;
6193         }
6194
6195         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6196                 err = -EOPNOTSUPP;
6197                 goto out_err;
6198         }
6199
6200         while (1) {
6201                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6202                                     mpp, &pinfo);
6203                 if (err == -ENOENT)
6204                         break;
6205                 if (err)
6206                         goto out_err;
6207
6208                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6209                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6210                                        wdev->netdev, dst, mpp,
6211                                        &pinfo) < 0)
6212                         goto out;
6213
6214                 path_idx++;
6215         }
6216
6217  out:
6218         cb->args[2] = path_idx;
6219         err = skb->len;
6220  out_err:
6221         rtnl_unlock();
6222         return err;
6223 }
6224
6225 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6226 {
6227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6228         struct net_device *dev = info->user_ptr[1];
6229         struct wireless_dev *wdev = dev->ieee80211_ptr;
6230         struct bss_parameters params;
6231         int err;
6232
6233         memset(&params, 0, sizeof(params));
6234         /* default to not changing parameters */
6235         params.use_cts_prot = -1;
6236         params.use_short_preamble = -1;
6237         params.use_short_slot_time = -1;
6238         params.ap_isolate = -1;
6239         params.ht_opmode = -1;
6240         params.p2p_ctwindow = -1;
6241         params.p2p_opp_ps = -1;
6242
6243         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6244                 params.use_cts_prot =
6245                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6246         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6247                 params.use_short_preamble =
6248                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6249         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6250                 params.use_short_slot_time =
6251                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6252         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6253                 params.basic_rates =
6254                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6255                 params.basic_rates_len =
6256                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6257         }
6258         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6259                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6260         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6261                 params.ht_opmode =
6262                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6263
6264         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6265                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6266                         return -EINVAL;
6267                 params.p2p_ctwindow =
6268                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6269                 if (params.p2p_ctwindow != 0 &&
6270                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6271                         return -EINVAL;
6272         }
6273
6274         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6275                 u8 tmp;
6276
6277                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6278                         return -EINVAL;
6279                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6280                 params.p2p_opp_ps = tmp;
6281                 if (params.p2p_opp_ps &&
6282                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6283                         return -EINVAL;
6284         }
6285
6286         if (!rdev->ops->change_bss)
6287                 return -EOPNOTSUPP;
6288
6289         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6290             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6291                 return -EOPNOTSUPP;
6292
6293         wdev_lock(wdev);
6294         err = rdev_change_bss(rdev, dev, &params);
6295         wdev_unlock(wdev);
6296
6297         return err;
6298 }
6299
6300 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6301 {
6302         char *data = NULL;
6303         bool is_indoor;
6304         enum nl80211_user_reg_hint_type user_reg_hint_type;
6305         u32 owner_nlportid;
6306
6307         /*
6308          * You should only get this when cfg80211 hasn't yet initialized
6309          * completely when built-in to the kernel right between the time
6310          * window between nl80211_init() and regulatory_init(), if that is
6311          * even possible.
6312          */
6313         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6314                 return -EINPROGRESS;
6315
6316         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6317                 user_reg_hint_type =
6318                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6319         else
6320                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6321
6322         switch (user_reg_hint_type) {
6323         case NL80211_USER_REG_HINT_USER:
6324         case NL80211_USER_REG_HINT_CELL_BASE:
6325                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6326                         return -EINVAL;
6327
6328                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6329                 return regulatory_hint_user(data, user_reg_hint_type);
6330         case NL80211_USER_REG_HINT_INDOOR:
6331                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6332                         owner_nlportid = info->snd_portid;
6333                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6334                 } else {
6335                         owner_nlportid = 0;
6336                         is_indoor = true;
6337                 }
6338
6339                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6340         default:
6341                 return -EINVAL;
6342         }
6343 }
6344
6345 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6346 {
6347         return reg_reload_regdb();
6348 }
6349
6350 static int nl80211_get_mesh_config(struct sk_buff *skb,
6351                                    struct genl_info *info)
6352 {
6353         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6354         struct net_device *dev = info->user_ptr[1];
6355         struct wireless_dev *wdev = dev->ieee80211_ptr;
6356         struct mesh_config cur_params;
6357         int err = 0;
6358         void *hdr;
6359         struct nlattr *pinfoattr;
6360         struct sk_buff *msg;
6361
6362         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6363                 return -EOPNOTSUPP;
6364
6365         if (!rdev->ops->get_mesh_config)
6366                 return -EOPNOTSUPP;
6367
6368         wdev_lock(wdev);
6369         /* If not connected, get default parameters */
6370         if (!wdev->mesh_id_len)
6371                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6372         else
6373                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6374         wdev_unlock(wdev);
6375
6376         if (err)
6377                 return err;
6378
6379         /* Draw up a netlink message to send back */
6380         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6381         if (!msg)
6382                 return -ENOMEM;
6383         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6384                              NL80211_CMD_GET_MESH_CONFIG);
6385         if (!hdr)
6386                 goto out;
6387         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6388         if (!pinfoattr)
6389                 goto nla_put_failure;
6390         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6391             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6392                         cur_params.dot11MeshRetryTimeout) ||
6393             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6394                         cur_params.dot11MeshConfirmTimeout) ||
6395             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6396                         cur_params.dot11MeshHoldingTimeout) ||
6397             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6398                         cur_params.dot11MeshMaxPeerLinks) ||
6399             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6400                        cur_params.dot11MeshMaxRetries) ||
6401             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6402                        cur_params.dot11MeshTTL) ||
6403             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6404                        cur_params.element_ttl) ||
6405             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6406                        cur_params.auto_open_plinks) ||
6407             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6408                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6409             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6410                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6411             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6412                         cur_params.path_refresh_time) ||
6413             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6414                         cur_params.min_discovery_timeout) ||
6415             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6416                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6417             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6418                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6419             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6420                         cur_params.dot11MeshHWMPperrMinInterval) ||
6421             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6422                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6423             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6424                        cur_params.dot11MeshHWMPRootMode) ||
6425             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6426                         cur_params.dot11MeshHWMPRannInterval) ||
6427             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6428                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6429             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6430                        cur_params.dot11MeshForwarding) ||
6431             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6432                         cur_params.rssi_threshold) ||
6433             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6434                         cur_params.ht_opmode) ||
6435             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6436                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6437             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6438                         cur_params.dot11MeshHWMProotInterval) ||
6439             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6440                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6441             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6442                         cur_params.power_mode) ||
6443             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6444                         cur_params.dot11MeshAwakeWindowDuration) ||
6445             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6446                         cur_params.plink_timeout) ||
6447             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6448                        cur_params.dot11MeshConnectedToMeshGate))
6449                 goto nla_put_failure;
6450         nla_nest_end(msg, pinfoattr);
6451         genlmsg_end(msg, hdr);
6452         return genlmsg_reply(msg, info);
6453
6454  nla_put_failure:
6455  out:
6456         nlmsg_free(msg);
6457         return -ENOBUFS;
6458 }
6459
6460 static const struct nla_policy
6461 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6462         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6463                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6464         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6465                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6466         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6467                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6468         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6469                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6470         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6471         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6472         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6473         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6474         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6475                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6476         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6477         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6478         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6479         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6480         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6481                 NLA_POLICY_MIN(NLA_U16, 1),
6482         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6483                 NLA_POLICY_MIN(NLA_U16, 1),
6484         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6485                 NLA_POLICY_MIN(NLA_U16, 1),
6486         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6487         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6488                 NLA_POLICY_MIN(NLA_U16, 1),
6489         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6490         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6491         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6492                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6493         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6494         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6495         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6496                 NLA_POLICY_MIN(NLA_U16, 1),
6497         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6498                 NLA_POLICY_MIN(NLA_U16, 1),
6499         [NL80211_MESHCONF_POWER_MODE] =
6500                 NLA_POLICY_RANGE(NLA_U32,
6501                                  NL80211_MESH_POWER_ACTIVE,
6502                                  NL80211_MESH_POWER_MAX),
6503         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6504         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6505         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6506 };
6507
6508 static const struct nla_policy
6509         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6510         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6511         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6512         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6513         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6514         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6515         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6516         [NL80211_MESH_SETUP_IE] =
6517                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6518                                        IEEE80211_MAX_DATA_LEN),
6519         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6520 };
6521
6522 static int nl80211_parse_mesh_config(struct genl_info *info,
6523                                      struct mesh_config *cfg,
6524                                      u32 *mask_out)
6525 {
6526         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6527         u32 mask = 0;
6528         u16 ht_opmode;
6529
6530 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6531 do {                                                                    \
6532         if (tb[attr]) {                                                 \
6533                 cfg->param = fn(tb[attr]);                              \
6534                 mask |= BIT((attr) - 1);                                \
6535         }                                                               \
6536 } while (0)
6537
6538         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6539                 return -EINVAL;
6540         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6541                 return -EINVAL;
6542
6543         /* This makes sure that there aren't more than 32 mesh config
6544          * parameters (otherwise our bitfield scheme would not work.) */
6545         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6546
6547         /* Fill in the params struct */
6548         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6549                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6550         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6551                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6552                                   nla_get_u16);
6553         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6554                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6555                                   nla_get_u16);
6556         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6557                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6558                                   nla_get_u16);
6559         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6560                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6561         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6562                                   NL80211_MESHCONF_TTL, nla_get_u8);
6563         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6564                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6565         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6566                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6567                                   nla_get_u8);
6568         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6569                                   mask,
6570                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6571                                   nla_get_u32);
6572         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6573                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6574                                   nla_get_u8);
6575         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6576                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6577                                   nla_get_u32);
6578         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6579             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6580                 return -EINVAL;
6581         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6582                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6583                                   nla_get_u16);
6584         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6585                                   mask,
6586                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6587                                   nla_get_u32);
6588         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6589             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6590              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6591                 return -EINVAL;
6592         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6593                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6594                                   nla_get_u16);
6595         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6596                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6597                                   nla_get_u16);
6598         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6599                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6600                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6601                                   nla_get_u16);
6602         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6603                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6604         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6605                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6606                                   nla_get_u16);
6607         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6608                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6609                                   nla_get_u8);
6610         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6611                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6612         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6613                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6614                                   nla_get_s32);
6615         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6616                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6617                                   nla_get_u8);
6618         /*
6619          * Check HT operation mode based on
6620          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6621          */
6622         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6623                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6624
6625                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6626                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6627                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6628                         return -EINVAL;
6629
6630                 /* NON_HT_STA bit is reserved, but some programs set it */
6631                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6632
6633                 cfg->ht_opmode = ht_opmode;
6634                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6635         }
6636         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6637                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6638                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6639                                   nla_get_u32);
6640         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6641             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6642              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6643                 return -EINVAL;
6644         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6645                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6646                                   nla_get_u16);
6647         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6648                                   mask,
6649                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6650                                   nla_get_u16);
6651         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6652                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6653         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6654                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6655         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6656                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6657         if (mask_out)
6658                 *mask_out = mask;
6659
6660         return 0;
6661
6662 #undef FILL_IN_MESH_PARAM_IF_SET
6663 }
6664
6665 static int nl80211_parse_mesh_setup(struct genl_info *info,
6666                                      struct mesh_setup *setup)
6667 {
6668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6669         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6670
6671         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6672                 return -EINVAL;
6673         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6674                 return -EINVAL;
6675
6676         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6677                 setup->sync_method =
6678                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6679                  IEEE80211_SYNC_METHOD_VENDOR :
6680                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6681
6682         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6683                 setup->path_sel_proto =
6684                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6685                  IEEE80211_PATH_PROTOCOL_VENDOR :
6686                  IEEE80211_PATH_PROTOCOL_HWMP;
6687
6688         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6689                 setup->path_metric =
6690                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6691                  IEEE80211_PATH_METRIC_VENDOR :
6692                  IEEE80211_PATH_METRIC_AIRTIME;
6693
6694         if (tb[NL80211_MESH_SETUP_IE]) {
6695                 struct nlattr *ieattr =
6696                         tb[NL80211_MESH_SETUP_IE];
6697                 setup->ie = nla_data(ieattr);
6698                 setup->ie_len = nla_len(ieattr);
6699         }
6700         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6701             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6702                 return -EINVAL;
6703         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6704         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6705         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6706         if (setup->is_secure)
6707                 setup->user_mpm = true;
6708
6709         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6710                 if (!setup->user_mpm)
6711                         return -EINVAL;
6712                 setup->auth_id =
6713                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6714         }
6715
6716         return 0;
6717 }
6718
6719 static int nl80211_update_mesh_config(struct sk_buff *skb,
6720                                       struct genl_info *info)
6721 {
6722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6723         struct net_device *dev = info->user_ptr[1];
6724         struct wireless_dev *wdev = dev->ieee80211_ptr;
6725         struct mesh_config cfg;
6726         u32 mask;
6727         int err;
6728
6729         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6730                 return -EOPNOTSUPP;
6731
6732         if (!rdev->ops->update_mesh_config)
6733                 return -EOPNOTSUPP;
6734
6735         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6736         if (err)
6737                 return err;
6738
6739         wdev_lock(wdev);
6740         if (!wdev->mesh_id_len)
6741                 err = -ENOLINK;
6742
6743         if (!err)
6744                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6745
6746         wdev_unlock(wdev);
6747
6748         return err;
6749 }
6750
6751 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6752                               struct sk_buff *msg)
6753 {
6754         struct nlattr *nl_reg_rules;
6755         unsigned int i;
6756
6757         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6758             (regdom->dfs_region &&
6759              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6760                 goto nla_put_failure;
6761
6762         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6763         if (!nl_reg_rules)
6764                 goto nla_put_failure;
6765
6766         for (i = 0; i < regdom->n_reg_rules; i++) {
6767                 struct nlattr *nl_reg_rule;
6768                 const struct ieee80211_reg_rule *reg_rule;
6769                 const struct ieee80211_freq_range *freq_range;
6770                 const struct ieee80211_power_rule *power_rule;
6771                 unsigned int max_bandwidth_khz;
6772
6773                 reg_rule = &regdom->reg_rules[i];
6774                 freq_range = &reg_rule->freq_range;
6775                 power_rule = &reg_rule->power_rule;
6776
6777                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6778                 if (!nl_reg_rule)
6779                         goto nla_put_failure;
6780
6781                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6782                 if (!max_bandwidth_khz)
6783                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6784                                                                   reg_rule);
6785
6786                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6787                                 reg_rule->flags) ||
6788                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6789                                 freq_range->start_freq_khz) ||
6790                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6791                                 freq_range->end_freq_khz) ||
6792                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6793                                 max_bandwidth_khz) ||
6794                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6795                                 power_rule->max_antenna_gain) ||
6796                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6797                                 power_rule->max_eirp) ||
6798                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6799                                 reg_rule->dfs_cac_ms))
6800                         goto nla_put_failure;
6801
6802                 nla_nest_end(msg, nl_reg_rule);
6803         }
6804
6805         nla_nest_end(msg, nl_reg_rules);
6806         return 0;
6807
6808 nla_put_failure:
6809         return -EMSGSIZE;
6810 }
6811
6812 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6813 {
6814         const struct ieee80211_regdomain *regdom = NULL;
6815         struct cfg80211_registered_device *rdev;
6816         struct wiphy *wiphy = NULL;
6817         struct sk_buff *msg;
6818         void *hdr;
6819
6820         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6821         if (!msg)
6822                 return -ENOBUFS;
6823
6824         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6825                              NL80211_CMD_GET_REG);
6826         if (!hdr)
6827                 goto put_failure;
6828
6829         if (info->attrs[NL80211_ATTR_WIPHY]) {
6830                 bool self_managed;
6831
6832                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6833                 if (IS_ERR(rdev)) {
6834                         nlmsg_free(msg);
6835                         return PTR_ERR(rdev);
6836                 }
6837
6838                 wiphy = &rdev->wiphy;
6839                 self_managed = wiphy->regulatory_flags &
6840                                REGULATORY_WIPHY_SELF_MANAGED;
6841                 regdom = get_wiphy_regdom(wiphy);
6842
6843                 /* a self-managed-reg device must have a private regdom */
6844                 if (WARN_ON(!regdom && self_managed)) {
6845                         nlmsg_free(msg);
6846                         return -EINVAL;
6847                 }
6848
6849                 if (regdom &&
6850                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6851                         goto nla_put_failure;
6852         }
6853
6854         if (!wiphy && reg_last_request_cell_base() &&
6855             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6856                         NL80211_USER_REG_HINT_CELL_BASE))
6857                 goto nla_put_failure;
6858
6859         rcu_read_lock();
6860
6861         if (!regdom)
6862                 regdom = rcu_dereference(cfg80211_regdomain);
6863
6864         if (nl80211_put_regdom(regdom, msg))
6865                 goto nla_put_failure_rcu;
6866
6867         rcu_read_unlock();
6868
6869         genlmsg_end(msg, hdr);
6870         return genlmsg_reply(msg, info);
6871
6872 nla_put_failure_rcu:
6873         rcu_read_unlock();
6874 nla_put_failure:
6875 put_failure:
6876         nlmsg_free(msg);
6877         return -EMSGSIZE;
6878 }
6879
6880 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6881                                u32 seq, int flags, struct wiphy *wiphy,
6882                                const struct ieee80211_regdomain *regdom)
6883 {
6884         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6885                                    NL80211_CMD_GET_REG);
6886
6887         if (!hdr)
6888                 return -1;
6889
6890         genl_dump_check_consistent(cb, hdr);
6891
6892         if (nl80211_put_regdom(regdom, msg))
6893                 goto nla_put_failure;
6894
6895         if (!wiphy && reg_last_request_cell_base() &&
6896             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6897                         NL80211_USER_REG_HINT_CELL_BASE))
6898                 goto nla_put_failure;
6899
6900         if (wiphy &&
6901             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6902                 goto nla_put_failure;
6903
6904         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6905             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6906                 goto nla_put_failure;
6907
6908         genlmsg_end(msg, hdr);
6909         return 0;
6910
6911 nla_put_failure:
6912         genlmsg_cancel(msg, hdr);
6913         return -EMSGSIZE;
6914 }
6915
6916 static int nl80211_get_reg_dump(struct sk_buff *skb,
6917                                 struct netlink_callback *cb)
6918 {
6919         const struct ieee80211_regdomain *regdom = NULL;
6920         struct cfg80211_registered_device *rdev;
6921         int err, reg_idx, start = cb->args[2];
6922
6923         rtnl_lock();
6924
6925         if (cfg80211_regdomain && start == 0) {
6926                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6927                                           NLM_F_MULTI, NULL,
6928                                           rtnl_dereference(cfg80211_regdomain));
6929                 if (err < 0)
6930                         goto out_err;
6931         }
6932
6933         /* the global regdom is idx 0 */
6934         reg_idx = 1;
6935         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6936                 regdom = get_wiphy_regdom(&rdev->wiphy);
6937                 if (!regdom)
6938                         continue;
6939
6940                 if (++reg_idx <= start)
6941                         continue;
6942
6943                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6944                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6945                 if (err < 0) {
6946                         reg_idx--;
6947                         break;
6948                 }
6949         }
6950
6951         cb->args[2] = reg_idx;
6952         err = skb->len;
6953 out_err:
6954         rtnl_unlock();
6955         return err;
6956 }
6957
6958 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6959 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6960         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6961         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6962         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6963         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6964         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6965         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6966         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6967 };
6968
6969 static int parse_reg_rule(struct nlattr *tb[],
6970         struct ieee80211_reg_rule *reg_rule)
6971 {
6972         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6973         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6974
6975         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6976                 return -EINVAL;
6977         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6978                 return -EINVAL;
6979         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6980                 return -EINVAL;
6981         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6982                 return -EINVAL;
6983         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6984                 return -EINVAL;
6985
6986         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6987
6988         freq_range->start_freq_khz =
6989                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6990         freq_range->end_freq_khz =
6991                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6992         freq_range->max_bandwidth_khz =
6993                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6994
6995         power_rule->max_eirp =
6996                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6997
6998         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6999                 power_rule->max_antenna_gain =
7000                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7001
7002         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7003                 reg_rule->dfs_cac_ms =
7004                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7005
7006         return 0;
7007 }
7008
7009 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7010 {
7011         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7012         struct nlattr *nl_reg_rule;
7013         char *alpha2;
7014         int rem_reg_rules, r;
7015         u32 num_rules = 0, rule_idx = 0;
7016         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7017         struct ieee80211_regdomain *rd;
7018
7019         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7020                 return -EINVAL;
7021
7022         if (!info->attrs[NL80211_ATTR_REG_RULES])
7023                 return -EINVAL;
7024
7025         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7026
7027         if (info->attrs[NL80211_ATTR_DFS_REGION])
7028                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7029
7030         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7031                             rem_reg_rules) {
7032                 num_rules++;
7033                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7034                         return -EINVAL;
7035         }
7036
7037         if (!reg_is_valid_request(alpha2))
7038                 return -EINVAL;
7039
7040         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7041         if (!rd)
7042                 return -ENOMEM;
7043
7044         rd->n_reg_rules = num_rules;
7045         rd->alpha2[0] = alpha2[0];
7046         rd->alpha2[1] = alpha2[1];
7047
7048         /*
7049          * Disable DFS master mode if the DFS region was
7050          * not supported or known on this kernel.
7051          */
7052         if (reg_supported_dfs_region(dfs_region))
7053                 rd->dfs_region = dfs_region;
7054
7055         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7056                             rem_reg_rules) {
7057                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7058                                                 nl_reg_rule, reg_rule_policy,
7059                                                 info->extack);
7060                 if (r)
7061                         goto bad_reg;
7062                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7063                 if (r)
7064                         goto bad_reg;
7065
7066                 rule_idx++;
7067
7068                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7069                         r = -EINVAL;
7070                         goto bad_reg;
7071                 }
7072         }
7073
7074         /* set_regdom takes ownership of rd */
7075         return set_regdom(rd, REGD_SOURCE_CRDA);
7076  bad_reg:
7077         kfree(rd);
7078         return r;
7079 }
7080 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7081
7082 static int validate_scan_freqs(struct nlattr *freqs)
7083 {
7084         struct nlattr *attr1, *attr2;
7085         int n_channels = 0, tmp1, tmp2;
7086
7087         nla_for_each_nested(attr1, freqs, tmp1)
7088                 if (nla_len(attr1) != sizeof(u32))
7089                         return 0;
7090
7091         nla_for_each_nested(attr1, freqs, tmp1) {
7092                 n_channels++;
7093                 /*
7094                  * Some hardware has a limited channel list for
7095                  * scanning, and it is pretty much nonsensical
7096                  * to scan for a channel twice, so disallow that
7097                  * and don't require drivers to check that the
7098                  * channel list they get isn't longer than what
7099                  * they can scan, as long as they can scan all
7100                  * the channels they registered at once.
7101                  */
7102                 nla_for_each_nested(attr2, freqs, tmp2)
7103                         if (attr1 != attr2 &&
7104                             nla_get_u32(attr1) == nla_get_u32(attr2))
7105                                 return 0;
7106         }
7107
7108         return n_channels;
7109 }
7110
7111 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7112 {
7113         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7114 }
7115
7116 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7117                             struct cfg80211_bss_selection *bss_select)
7118 {
7119         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7120         struct nlattr *nest;
7121         int err;
7122         bool found = false;
7123         int i;
7124
7125         /* only process one nested attribute */
7126         nest = nla_data(nla);
7127         if (!nla_ok(nest, nla_len(nest)))
7128                 return -EINVAL;
7129
7130         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7131                                           nest, nl80211_bss_select_policy,
7132                                           NULL);
7133         if (err)
7134                 return err;
7135
7136         /* only one attribute may be given */
7137         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7138                 if (attr[i]) {
7139                         if (found)
7140                                 return -EINVAL;
7141                         found = true;
7142                 }
7143         }
7144
7145         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7146
7147         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7148                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7149
7150         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7151                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7152                 bss_select->param.band_pref =
7153                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7154                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7155                         return -EINVAL;
7156         }
7157
7158         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7159                 struct nl80211_bss_select_rssi_adjust *adj_param;
7160
7161                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7162                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7163                 bss_select->param.adjust.band = adj_param->band;
7164                 bss_select->param.adjust.delta = adj_param->delta;
7165                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7166                         return -EINVAL;
7167         }
7168
7169         /* user-space did not provide behaviour attribute */
7170         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7171                 return -EINVAL;
7172
7173         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7174                 return -EINVAL;
7175
7176         return 0;
7177 }
7178
7179 int nl80211_parse_random_mac(struct nlattr **attrs,
7180                              u8 *mac_addr, u8 *mac_addr_mask)
7181 {
7182         int i;
7183
7184         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7185                 eth_zero_addr(mac_addr);
7186                 eth_zero_addr(mac_addr_mask);
7187                 mac_addr[0] = 0x2;
7188                 mac_addr_mask[0] = 0x3;
7189
7190                 return 0;
7191         }
7192
7193         /* need both or none */
7194         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7195                 return -EINVAL;
7196
7197         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7198         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7199
7200         /* don't allow or configure an mcast address */
7201         if (!is_multicast_ether_addr(mac_addr_mask) ||
7202             is_multicast_ether_addr(mac_addr))
7203                 return -EINVAL;
7204
7205         /*
7206          * allow users to pass a MAC address that has bits set outside
7207          * of the mask, but don't bother drivers with having to deal
7208          * with such bits
7209          */
7210         for (i = 0; i < ETH_ALEN; i++)
7211                 mac_addr[i] &= mac_addr_mask[i];
7212
7213         return 0;
7214 }
7215
7216 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7217 {
7218         ASSERT_WDEV_LOCK(wdev);
7219
7220         if (!cfg80211_beaconing_iface_active(wdev))
7221                 return true;
7222
7223         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7224                 return true;
7225
7226         return regulatory_pre_cac_allowed(wdev->wiphy);
7227 }
7228
7229 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7230                                     enum nl80211_ext_feature_index feat)
7231 {
7232         if (!(flags & flag))
7233                 return true;
7234         if (wiphy_ext_feature_isset(wiphy, feat))
7235                 return true;
7236         return false;
7237 }
7238
7239 static int
7240 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7241                          void *request, struct nlattr **attrs,
7242                          bool is_sched_scan)
7243 {
7244         u8 *mac_addr, *mac_addr_mask;
7245         u32 *flags;
7246         enum nl80211_feature_flags randomness_flag;
7247
7248         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7249                 return 0;
7250
7251         if (is_sched_scan) {
7252                 struct cfg80211_sched_scan_request *req = request;
7253
7254                 randomness_flag = wdev ?
7255                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7256                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7257                 flags = &req->flags;
7258                 mac_addr = req->mac_addr;
7259                 mac_addr_mask = req->mac_addr_mask;
7260         } else {
7261                 struct cfg80211_scan_request *req = request;
7262
7263                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7264                 flags = &req->flags;
7265                 mac_addr = req->mac_addr;
7266                 mac_addr_mask = req->mac_addr_mask;
7267         }
7268
7269         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7270
7271         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7272              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7273             !nl80211_check_scan_feat(wiphy, *flags,
7274                                      NL80211_SCAN_FLAG_LOW_SPAN,
7275                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7276             !nl80211_check_scan_feat(wiphy, *flags,
7277                                      NL80211_SCAN_FLAG_LOW_POWER,
7278                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7279             !nl80211_check_scan_feat(wiphy, *flags,
7280                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7281                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7282             !nl80211_check_scan_feat(wiphy, *flags,
7283                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7284                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7285             !nl80211_check_scan_feat(wiphy, *flags,
7286                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7287                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7288             !nl80211_check_scan_feat(wiphy, *flags,
7289                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7290                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7291             !nl80211_check_scan_feat(wiphy, *flags,
7292                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7293                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7294             !nl80211_check_scan_feat(wiphy, *flags,
7295                                      NL80211_SCAN_FLAG_RANDOM_SN,
7296                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7297             !nl80211_check_scan_feat(wiphy, *flags,
7298                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7299                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7300                 return -EOPNOTSUPP;
7301
7302         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7303                 int err;
7304
7305                 if (!(wiphy->features & randomness_flag) ||
7306                     (wdev && wdev->current_bss))
7307                         return -EOPNOTSUPP;
7308
7309                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7310                 if (err)
7311                         return err;
7312         }
7313
7314         return 0;
7315 }
7316
7317 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7318 {
7319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7320         struct wireless_dev *wdev = info->user_ptr[1];
7321         struct cfg80211_scan_request *request;
7322         struct nlattr *attr;
7323         struct wiphy *wiphy;
7324         int err, tmp, n_ssids = 0, n_channels, i;
7325         size_t ie_len;
7326
7327         wiphy = &rdev->wiphy;
7328
7329         if (wdev->iftype == NL80211_IFTYPE_NAN)
7330                 return -EOPNOTSUPP;
7331
7332         if (!rdev->ops->scan)
7333                 return -EOPNOTSUPP;
7334
7335         if (rdev->scan_req || rdev->scan_msg) {
7336                 err = -EBUSY;
7337                 goto unlock;
7338         }
7339
7340         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7341                 n_channels = validate_scan_freqs(
7342                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7343                 if (!n_channels) {
7344                         err = -EINVAL;
7345                         goto unlock;
7346                 }
7347         } else {
7348                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7349         }
7350
7351         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7352                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7353                         n_ssids++;
7354
7355         if (n_ssids > wiphy->max_scan_ssids) {
7356                 err = -EINVAL;
7357                 goto unlock;
7358         }
7359
7360         if (info->attrs[NL80211_ATTR_IE])
7361                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7362         else
7363                 ie_len = 0;
7364
7365         if (ie_len > wiphy->max_scan_ie_len) {
7366                 err = -EINVAL;
7367                 goto unlock;
7368         }
7369
7370         request = kzalloc(sizeof(*request)
7371                         + sizeof(*request->ssids) * n_ssids
7372                         + sizeof(*request->channels) * n_channels
7373                         + ie_len, GFP_KERNEL);
7374         if (!request) {
7375                 err = -ENOMEM;
7376                 goto unlock;
7377         }
7378
7379         if (n_ssids)
7380                 request->ssids = (void *)&request->channels[n_channels];
7381         request->n_ssids = n_ssids;
7382         if (ie_len) {
7383                 if (n_ssids)
7384                         request->ie = (void *)(request->ssids + n_ssids);
7385                 else
7386                         request->ie = (void *)(request->channels + n_channels);
7387         }
7388
7389         i = 0;
7390         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7391                 /* user specified, bail out if channel not found */
7392                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7393                         struct ieee80211_channel *chan;
7394
7395                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7396
7397                         if (!chan) {
7398                                 err = -EINVAL;
7399                                 goto out_free;
7400                         }
7401
7402                         /* ignore disabled channels */
7403                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7404                                 continue;
7405
7406                         request->channels[i] = chan;
7407                         i++;
7408                 }
7409         } else {
7410                 enum nl80211_band band;
7411
7412                 /* all channels */
7413                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7414                         int j;
7415
7416                         if (!wiphy->bands[band])
7417                                 continue;
7418                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7419                                 struct ieee80211_channel *chan;
7420
7421                                 chan = &wiphy->bands[band]->channels[j];
7422
7423                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7424                                         continue;
7425
7426                                 request->channels[i] = chan;
7427                                 i++;
7428                         }
7429                 }
7430         }
7431
7432         if (!i) {
7433                 err = -EINVAL;
7434                 goto out_free;
7435         }
7436
7437         request->n_channels = i;
7438
7439         wdev_lock(wdev);
7440         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7441                 struct ieee80211_channel *chan;
7442
7443                 if (request->n_channels != 1) {
7444                         wdev_unlock(wdev);
7445                         err = -EBUSY;
7446                         goto out_free;
7447                 }
7448
7449                 chan = request->channels[0];
7450                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7451                         wdev_unlock(wdev);
7452                         err = -EBUSY;
7453                         goto out_free;
7454                 }
7455         }
7456         wdev_unlock(wdev);
7457
7458         i = 0;
7459         if (n_ssids) {
7460                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7461                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7462                                 err = -EINVAL;
7463                                 goto out_free;
7464                         }
7465                         request->ssids[i].ssid_len = nla_len(attr);
7466                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7467                         i++;
7468                 }
7469         }
7470
7471         if (info->attrs[NL80211_ATTR_IE]) {
7472                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7473                 memcpy((void *)request->ie,
7474                        nla_data(info->attrs[NL80211_ATTR_IE]),
7475                        request->ie_len);
7476         }
7477
7478         for (i = 0; i < NUM_NL80211_BANDS; i++)
7479                 if (wiphy->bands[i])
7480                         request->rates[i] =
7481                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7482
7483         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7484                 nla_for_each_nested(attr,
7485                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7486                                     tmp) {
7487                         enum nl80211_band band = nla_type(attr);
7488
7489                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7490                                 err = -EINVAL;
7491                                 goto out_free;
7492                         }
7493
7494                         if (!wiphy->bands[band])
7495                                 continue;
7496
7497                         err = ieee80211_get_ratemask(wiphy->bands[band],
7498                                                      nla_data(attr),
7499                                                      nla_len(attr),
7500                                                      &request->rates[band]);
7501                         if (err)
7502                                 goto out_free;
7503                 }
7504         }
7505
7506         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7507                 if (!wiphy_ext_feature_isset(wiphy,
7508                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7509                         err = -EOPNOTSUPP;
7510                         goto out_free;
7511                 }
7512
7513                 request->duration =
7514                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7515                 request->duration_mandatory =
7516                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7517         }
7518
7519         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7520                                        false);
7521         if (err)
7522                 goto out_free;
7523
7524         request->no_cck =
7525                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7526
7527         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7528          * BSSID to scan for. This was problematic because that same attribute
7529          * was already used for another purpose (local random MAC address). The
7530          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7531          * compatibility with older userspace components, also use the
7532          * NL80211_ATTR_MAC value here if it can be determined to be used for
7533          * the specific BSSID use case instead of the random MAC address
7534          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7535          */
7536         if (info->attrs[NL80211_ATTR_BSSID])
7537                 memcpy(request->bssid,
7538                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7539         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7540                  info->attrs[NL80211_ATTR_MAC])
7541                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7542                        ETH_ALEN);
7543         else
7544                 eth_broadcast_addr(request->bssid);
7545
7546         request->wdev = wdev;
7547         request->wiphy = &rdev->wiphy;
7548         request->scan_start = jiffies;
7549
7550         rdev->scan_req = request;
7551         err = rdev_scan(rdev, request);
7552
7553         if (!err) {
7554                 nl80211_send_scan_start(rdev, wdev);
7555                 if (wdev->netdev)
7556                         dev_hold(wdev->netdev);
7557         } else {
7558  out_free:
7559                 rdev->scan_req = NULL;
7560                 kfree(request);
7561         }
7562
7563  unlock:
7564         return err;
7565 }
7566
7567 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7568 {
7569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7570         struct wireless_dev *wdev = info->user_ptr[1];
7571
7572         if (!rdev->ops->abort_scan)
7573                 return -EOPNOTSUPP;
7574
7575         if (rdev->scan_msg)
7576                 return 0;
7577
7578         if (!rdev->scan_req)
7579                 return -ENOENT;
7580
7581         rdev_abort_scan(rdev, wdev);
7582         return 0;
7583 }
7584
7585 static int
7586 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7587                                struct cfg80211_sched_scan_request *request,
7588                                struct nlattr **attrs)
7589 {
7590         int tmp, err, i = 0;
7591         struct nlattr *attr;
7592
7593         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7594                 u32 interval;
7595
7596                 /*
7597                  * If scan plans are not specified,
7598                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7599                  * case one scan plan will be set with the specified scan
7600                  * interval and infinite number of iterations.
7601                  */
7602                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7603                 if (!interval)
7604                         return -EINVAL;
7605
7606                 request->scan_plans[0].interval =
7607                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7608                 if (!request->scan_plans[0].interval)
7609                         return -EINVAL;
7610
7611                 if (request->scan_plans[0].interval >
7612                     wiphy->max_sched_scan_plan_interval)
7613                         request->scan_plans[0].interval =
7614                                 wiphy->max_sched_scan_plan_interval;
7615
7616                 return 0;
7617         }
7618
7619         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7620                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7621
7622                 if (WARN_ON(i >= n_plans))
7623                         return -EINVAL;
7624
7625                 err = nla_parse_nested_deprecated(plan,
7626                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7627                                                   attr, nl80211_plan_policy,
7628                                                   NULL);
7629                 if (err)
7630                         return err;
7631
7632                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7633                         return -EINVAL;
7634
7635                 request->scan_plans[i].interval =
7636                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7637                 if (!request->scan_plans[i].interval ||
7638                     request->scan_plans[i].interval >
7639                     wiphy->max_sched_scan_plan_interval)
7640                         return -EINVAL;
7641
7642                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7643                         request->scan_plans[i].iterations =
7644                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7645                         if (!request->scan_plans[i].iterations ||
7646                             (request->scan_plans[i].iterations >
7647                              wiphy->max_sched_scan_plan_iterations))
7648                                 return -EINVAL;
7649                 } else if (i < n_plans - 1) {
7650                         /*
7651                          * All scan plans but the last one must specify
7652                          * a finite number of iterations
7653                          */
7654                         return -EINVAL;
7655                 }
7656
7657                 i++;
7658         }
7659
7660         /*
7661          * The last scan plan must not specify the number of
7662          * iterations, it is supposed to run infinitely
7663          */
7664         if (request->scan_plans[n_plans - 1].iterations)
7665                 return  -EINVAL;
7666
7667         return 0;
7668 }
7669
7670 static int
7671 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7672                                        struct cfg80211_match_set *match_sets,
7673                                        struct nlattr *tb_band_rssi,
7674                                        s32 rssi_thold)
7675 {
7676         struct nlattr *attr;
7677         int i, tmp, ret = 0;
7678
7679         if (!wiphy_ext_feature_isset(wiphy,
7680                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7681                 if (tb_band_rssi)
7682                         ret = -EOPNOTSUPP;
7683                 else
7684                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7685                                 match_sets->per_band_rssi_thold[i] =
7686                                         NL80211_SCAN_RSSI_THOLD_OFF;
7687                 return ret;
7688         }
7689
7690         for (i = 0; i < NUM_NL80211_BANDS; i++)
7691                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7692
7693         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7694                 enum nl80211_band band = nla_type(attr);
7695
7696                 if (band < 0 || band >= NUM_NL80211_BANDS)
7697                         return -EINVAL;
7698
7699                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7700         }
7701
7702         return 0;
7703 }
7704
7705 static struct cfg80211_sched_scan_request *
7706 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7707                          struct nlattr **attrs, int max_match_sets)
7708 {
7709         struct cfg80211_sched_scan_request *request;
7710         struct nlattr *attr;
7711         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7712         enum nl80211_band band;
7713         size_t ie_len;
7714         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7715         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7716
7717         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7718                 n_channels = validate_scan_freqs(
7719                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7720                 if (!n_channels)
7721                         return ERR_PTR(-EINVAL);
7722         } else {
7723                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7724         }
7725
7726         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7727                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7728                                     tmp)
7729                         n_ssids++;
7730
7731         if (n_ssids > wiphy->max_sched_scan_ssids)
7732                 return ERR_PTR(-EINVAL);
7733
7734         /*
7735          * First, count the number of 'real' matchsets. Due to an issue with
7736          * the old implementation, matchsets containing only the RSSI attribute
7737          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7738          * RSSI for all matchsets, rather than their own matchset for reporting
7739          * all APs with a strong RSSI. This is needed to be compatible with
7740          * older userspace that treated a matchset with only the RSSI as the
7741          * global RSSI for all other matchsets - if there are other matchsets.
7742          */
7743         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7744                 nla_for_each_nested(attr,
7745                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7746                                     tmp) {
7747                         struct nlattr *rssi;
7748
7749                         err = nla_parse_nested_deprecated(tb,
7750                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7751                                                           attr,
7752                                                           nl80211_match_policy,
7753                                                           NULL);
7754                         if (err)
7755                                 return ERR_PTR(err);
7756
7757                         /* SSID and BSSID are mutually exclusive */
7758                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7759                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7760                                 return ERR_PTR(-EINVAL);
7761
7762                         /* add other standalone attributes here */
7763                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7764                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7765                                 n_match_sets++;
7766                                 continue;
7767                         }
7768                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7769                         if (rssi)
7770                                 default_match_rssi = nla_get_s32(rssi);
7771                 }
7772         }
7773
7774         /* However, if there's no other matchset, add the RSSI one */
7775         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7776                 n_match_sets = 1;
7777
7778         if (n_match_sets > max_match_sets)
7779                 return ERR_PTR(-EINVAL);
7780
7781         if (attrs[NL80211_ATTR_IE])
7782                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7783         else
7784                 ie_len = 0;
7785
7786         if (ie_len > wiphy->max_sched_scan_ie_len)
7787                 return ERR_PTR(-EINVAL);
7788
7789         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7790                 /*
7791                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7792                  * each scan plan already specifies its own interval
7793                  */
7794                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7795                         return ERR_PTR(-EINVAL);
7796
7797                 nla_for_each_nested(attr,
7798                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7799                         n_plans++;
7800         } else {
7801                 /*
7802                  * The scan interval attribute is kept for backward
7803                  * compatibility. If no scan plans are specified and sched scan
7804                  * interval is specified, one scan plan will be set with this
7805                  * scan interval and infinite number of iterations.
7806                  */
7807                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7808                         return ERR_PTR(-EINVAL);
7809
7810                 n_plans = 1;
7811         }
7812
7813         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7814                 return ERR_PTR(-EINVAL);
7815
7816         if (!wiphy_ext_feature_isset(
7817                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7818             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7819              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7820                 return ERR_PTR(-EINVAL);
7821
7822         request = kzalloc(sizeof(*request)
7823                         + sizeof(*request->ssids) * n_ssids
7824                         + sizeof(*request->match_sets) * n_match_sets
7825                         + sizeof(*request->scan_plans) * n_plans
7826                         + sizeof(*request->channels) * n_channels
7827                         + ie_len, GFP_KERNEL);
7828         if (!request)
7829                 return ERR_PTR(-ENOMEM);
7830
7831         if (n_ssids)
7832                 request->ssids = (void *)&request->channels[n_channels];
7833         request->n_ssids = n_ssids;
7834         if (ie_len) {
7835                 if (n_ssids)
7836                         request->ie = (void *)(request->ssids + n_ssids);
7837                 else
7838                         request->ie = (void *)(request->channels + n_channels);
7839         }
7840
7841         if (n_match_sets) {
7842                 if (request->ie)
7843                         request->match_sets = (void *)(request->ie + ie_len);
7844                 else if (n_ssids)
7845                         request->match_sets =
7846                                 (void *)(request->ssids + n_ssids);
7847                 else
7848                         request->match_sets =
7849                                 (void *)(request->channels + n_channels);
7850         }
7851         request->n_match_sets = n_match_sets;
7852
7853         if (n_match_sets)
7854                 request->scan_plans = (void *)(request->match_sets +
7855                                                n_match_sets);
7856         else if (request->ie)
7857                 request->scan_plans = (void *)(request->ie + ie_len);
7858         else if (n_ssids)
7859                 request->scan_plans = (void *)(request->ssids + n_ssids);
7860         else
7861                 request->scan_plans = (void *)(request->channels + n_channels);
7862
7863         request->n_scan_plans = n_plans;
7864
7865         i = 0;
7866         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7867                 /* user specified, bail out if channel not found */
7868                 nla_for_each_nested(attr,
7869                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7870                                     tmp) {
7871                         struct ieee80211_channel *chan;
7872
7873                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7874
7875                         if (!chan) {
7876                                 err = -EINVAL;
7877                                 goto out_free;
7878                         }
7879
7880                         /* ignore disabled channels */
7881                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7882                                 continue;
7883
7884                         request->channels[i] = chan;
7885                         i++;
7886                 }
7887         } else {
7888                 /* all channels */
7889                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7890                         int j;
7891
7892                         if (!wiphy->bands[band])
7893                                 continue;
7894                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7895                                 struct ieee80211_channel *chan;
7896
7897                                 chan = &wiphy->bands[band]->channels[j];
7898
7899                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7900                                         continue;
7901
7902                                 request->channels[i] = chan;
7903                                 i++;
7904                         }
7905                 }
7906         }
7907
7908         if (!i) {
7909                 err = -EINVAL;
7910                 goto out_free;
7911         }
7912
7913         request->n_channels = i;
7914
7915         i = 0;
7916         if (n_ssids) {
7917                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7918                                     tmp) {
7919                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7920                                 err = -EINVAL;
7921                                 goto out_free;
7922                         }
7923                         request->ssids[i].ssid_len = nla_len(attr);
7924                         memcpy(request->ssids[i].ssid, nla_data(attr),
7925                                nla_len(attr));
7926                         i++;
7927                 }
7928         }
7929
7930         i = 0;
7931         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7932                 nla_for_each_nested(attr,
7933                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7934                                     tmp) {
7935                         struct nlattr *ssid, *bssid, *rssi;
7936
7937                         err = nla_parse_nested_deprecated(tb,
7938                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7939                                                           attr,
7940                                                           nl80211_match_policy,
7941                                                           NULL);
7942                         if (err)
7943                                 goto out_free;
7944                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7945                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7946
7947                         if (!ssid && !bssid) {
7948                                 i++;
7949                                 continue;
7950                         }
7951
7952                         if (WARN_ON(i >= n_match_sets)) {
7953                                 /* this indicates a programming error,
7954                                  * the loop above should have verified
7955                                  * things properly
7956                                  */
7957                                 err = -EINVAL;
7958                                 goto out_free;
7959                         }
7960
7961                         if (ssid) {
7962                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7963                                         err = -EINVAL;
7964                                         goto out_free;
7965                                 }
7966                                 memcpy(request->match_sets[i].ssid.ssid,
7967                                        nla_data(ssid), nla_len(ssid));
7968                                 request->match_sets[i].ssid.ssid_len =
7969                                         nla_len(ssid);
7970                         }
7971                         if (bssid) {
7972                                 if (nla_len(bssid) != ETH_ALEN) {
7973                                         err = -EINVAL;
7974                                         goto out_free;
7975                                 }
7976                                 memcpy(request->match_sets[i].bssid,
7977                                        nla_data(bssid), ETH_ALEN);
7978                         }
7979
7980                         /* special attribute - old implementation w/a */
7981                         request->match_sets[i].rssi_thold = default_match_rssi;
7982                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7983                         if (rssi)
7984                                 request->match_sets[i].rssi_thold =
7985                                         nla_get_s32(rssi);
7986
7987                         /* Parse per band RSSI attribute */
7988                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
7989                                 &request->match_sets[i],
7990                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
7991                                 request->match_sets[i].rssi_thold);
7992                         if (err)
7993                                 goto out_free;
7994
7995                         i++;
7996                 }
7997
7998                 /* there was no other matchset, so the RSSI one is alone */
7999                 if (i == 0 && n_match_sets)
8000                         request->match_sets[0].rssi_thold = default_match_rssi;
8001
8002                 request->min_rssi_thold = INT_MAX;
8003                 for (i = 0; i < n_match_sets; i++)
8004                         request->min_rssi_thold =
8005                                 min(request->match_sets[i].rssi_thold,
8006                                     request->min_rssi_thold);
8007         } else {
8008                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8009         }
8010
8011         if (ie_len) {
8012                 request->ie_len = ie_len;
8013                 memcpy((void *)request->ie,
8014                        nla_data(attrs[NL80211_ATTR_IE]),
8015                        request->ie_len);
8016         }
8017
8018         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8019         if (err)
8020                 goto out_free;
8021
8022         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8023                 request->delay =
8024                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8025
8026         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8027                 request->relative_rssi = nla_get_s8(
8028                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8029                 request->relative_rssi_set = true;
8030         }
8031
8032         if (request->relative_rssi_set &&
8033             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8034                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8035
8036                 rssi_adjust = nla_data(
8037                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8038                 request->rssi_adjust.band = rssi_adjust->band;
8039                 request->rssi_adjust.delta = rssi_adjust->delta;
8040                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8041                         err = -EINVAL;
8042                         goto out_free;
8043                 }
8044         }
8045
8046         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8047         if (err)
8048                 goto out_free;
8049
8050         request->scan_start = jiffies;
8051
8052         return request;
8053
8054 out_free:
8055         kfree(request);
8056         return ERR_PTR(err);
8057 }
8058
8059 static int nl80211_start_sched_scan(struct sk_buff *skb,
8060                                     struct genl_info *info)
8061 {
8062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8063         struct net_device *dev = info->user_ptr[1];
8064         struct wireless_dev *wdev = dev->ieee80211_ptr;
8065         struct cfg80211_sched_scan_request *sched_scan_req;
8066         bool want_multi;
8067         int err;
8068
8069         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8070                 return -EOPNOTSUPP;
8071
8072         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8073         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8074         if (err)
8075                 return err;
8076
8077         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8078                                                   info->attrs,
8079                                                   rdev->wiphy.max_match_sets);
8080
8081         err = PTR_ERR_OR_ZERO(sched_scan_req);
8082         if (err)
8083                 goto out_err;
8084
8085         /* leave request id zero for legacy request
8086          * or if driver does not support multi-scheduled scan
8087          */
8088         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8089                 while (!sched_scan_req->reqid)
8090                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8091         }
8092
8093         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8094         if (err)
8095                 goto out_free;
8096
8097         sched_scan_req->dev = dev;
8098         sched_scan_req->wiphy = &rdev->wiphy;
8099
8100         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8101                 sched_scan_req->owner_nlportid = info->snd_portid;
8102
8103         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8104
8105         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8106         return 0;
8107
8108 out_free:
8109         kfree(sched_scan_req);
8110 out_err:
8111         return err;
8112 }
8113
8114 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8115                                    struct genl_info *info)
8116 {
8117         struct cfg80211_sched_scan_request *req;
8118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8119         u64 cookie;
8120
8121         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8122                 return -EOPNOTSUPP;
8123
8124         if (info->attrs[NL80211_ATTR_COOKIE]) {
8125                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8126                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8127         }
8128
8129         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8130                                      struct cfg80211_sched_scan_request,
8131                                      list);
8132         if (!req || req->reqid ||
8133             (req->owner_nlportid &&
8134              req->owner_nlportid != info->snd_portid))
8135                 return -ENOENT;
8136
8137         return cfg80211_stop_sched_scan_req(rdev, req, false);
8138 }
8139
8140 static int nl80211_start_radar_detection(struct sk_buff *skb,
8141                                          struct genl_info *info)
8142 {
8143         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8144         struct net_device *dev = info->user_ptr[1];
8145         struct wireless_dev *wdev = dev->ieee80211_ptr;
8146         struct wiphy *wiphy = wdev->wiphy;
8147         struct cfg80211_chan_def chandef;
8148         enum nl80211_dfs_regions dfs_region;
8149         unsigned int cac_time_ms;
8150         int err;
8151
8152         dfs_region = reg_get_dfs_region(wiphy);
8153         if (dfs_region == NL80211_DFS_UNSET)
8154                 return -EINVAL;
8155
8156         err = nl80211_parse_chandef(rdev, info, &chandef);
8157         if (err)
8158                 return err;
8159
8160         if (netif_carrier_ok(dev))
8161                 return -EBUSY;
8162
8163         if (wdev->cac_started)
8164                 return -EBUSY;
8165
8166         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8167         if (err < 0)
8168                 return err;
8169
8170         if (err == 0)
8171                 return -EINVAL;
8172
8173         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8174                 return -EINVAL;
8175
8176         /* CAC start is offloaded to HW and can't be started manually */
8177         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8178                 return -EOPNOTSUPP;
8179
8180         if (!rdev->ops->start_radar_detection)
8181                 return -EOPNOTSUPP;
8182
8183         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8184         if (WARN_ON(!cac_time_ms))
8185                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8186
8187         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8188         if (!err) {
8189                 wdev->chandef = chandef;
8190                 wdev->cac_started = true;
8191                 wdev->cac_start_time = jiffies;
8192                 wdev->cac_time_ms = cac_time_ms;
8193         }
8194         return err;
8195 }
8196
8197 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8198                                           struct genl_info *info)
8199 {
8200         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8201         struct net_device *dev = info->user_ptr[1];
8202         struct wireless_dev *wdev = dev->ieee80211_ptr;
8203         struct wiphy *wiphy = wdev->wiphy;
8204         struct cfg80211_chan_def chandef;
8205         enum nl80211_dfs_regions dfs_region;
8206         int err;
8207
8208         dfs_region = reg_get_dfs_region(wiphy);
8209         if (dfs_region == NL80211_DFS_UNSET) {
8210                 GENL_SET_ERR_MSG(info,
8211                                  "DFS Region is not set. Unexpected Radar indication");
8212                 return -EINVAL;
8213         }
8214
8215         err = nl80211_parse_chandef(rdev, info, &chandef);
8216         if (err) {
8217                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8218                 return err;
8219         }
8220
8221         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8222         if (err < 0) {
8223                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8224                 return err;
8225         }
8226
8227         if (err == 0) {
8228                 GENL_SET_ERR_MSG(info,
8229                                  "Unexpected Radar indication for chandef/iftype");
8230                 return -EINVAL;
8231         }
8232
8233         /* Do not process this notification if radar is already detected
8234          * by kernel on this channel, and return success.
8235          */
8236         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8237                 return 0;
8238
8239         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8240
8241         cfg80211_sched_dfs_chan_update(rdev);
8242
8243         rdev->radar_chandef = chandef;
8244
8245         /* Propagate this notification to other radios as well */
8246         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8247
8248         return 0;
8249 }
8250
8251 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8252 {
8253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8254         struct net_device *dev = info->user_ptr[1];
8255         struct wireless_dev *wdev = dev->ieee80211_ptr;
8256         struct cfg80211_csa_settings params;
8257         /* csa_attrs is defined static to avoid waste of stack size - this
8258          * function is called under RTNL lock, so this should not be a problem.
8259          */
8260         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8261         int err;
8262         bool need_new_beacon = false;
8263         bool need_handle_dfs_flag = true;
8264         int len, i;
8265         u32 cs_count;
8266
8267         if (!rdev->ops->channel_switch ||
8268             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8269                 return -EOPNOTSUPP;
8270
8271         switch (dev->ieee80211_ptr->iftype) {
8272         case NL80211_IFTYPE_AP:
8273         case NL80211_IFTYPE_P2P_GO:
8274                 need_new_beacon = true;
8275                 /* For all modes except AP the handle_dfs flag needs to be
8276                  * supplied to tell the kernel that userspace will handle radar
8277                  * events when they happen. Otherwise a switch to a channel
8278                  * requiring DFS will be rejected.
8279                  */
8280                 need_handle_dfs_flag = false;
8281
8282                 /* useless if AP is not running */
8283                 if (!wdev->beacon_interval)
8284                         return -ENOTCONN;
8285                 break;
8286         case NL80211_IFTYPE_ADHOC:
8287                 if (!wdev->ssid_len)
8288                         return -ENOTCONN;
8289                 break;
8290         case NL80211_IFTYPE_MESH_POINT:
8291                 if (!wdev->mesh_id_len)
8292                         return -ENOTCONN;
8293                 break;
8294         default:
8295                 return -EOPNOTSUPP;
8296         }
8297
8298         memset(&params, 0, sizeof(params));
8299         params.beacon_csa.ftm_responder = -1;
8300
8301         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8302             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8303                 return -EINVAL;
8304
8305         /* only important for AP, IBSS and mesh create IEs internally */
8306         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8307                 return -EINVAL;
8308
8309         /* Even though the attribute is u32, the specification says
8310          * u8, so let's make sure we don't overflow.
8311          */
8312         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8313         if (cs_count > 255)
8314                 return -EINVAL;
8315
8316         params.count = cs_count;
8317
8318         if (!need_new_beacon)
8319                 goto skip_beacons;
8320
8321         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8322         if (err)
8323                 return err;
8324
8325         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8326                                           info->attrs[NL80211_ATTR_CSA_IES],
8327                                           nl80211_policy, info->extack);
8328         if (err)
8329                 return err;
8330
8331         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8332         if (err)
8333                 return err;
8334
8335         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8336                 return -EINVAL;
8337
8338         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8339         if (!len || (len % sizeof(u16)))
8340                 return -EINVAL;
8341
8342         params.n_counter_offsets_beacon = len / sizeof(u16);
8343         if (rdev->wiphy.max_num_csa_counters &&
8344             (params.n_counter_offsets_beacon >
8345              rdev->wiphy.max_num_csa_counters))
8346                 return -EINVAL;
8347
8348         params.counter_offsets_beacon =
8349                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8350
8351         /* sanity checks - counters should fit and be the same */
8352         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8353                 u16 offset = params.counter_offsets_beacon[i];
8354
8355                 if (offset >= params.beacon_csa.tail_len)
8356                         return -EINVAL;
8357
8358                 if (params.beacon_csa.tail[offset] != params.count)
8359                         return -EINVAL;
8360         }
8361
8362         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8363                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8364                 if (!len || (len % sizeof(u16)))
8365                         return -EINVAL;
8366
8367                 params.n_counter_offsets_presp = len / sizeof(u16);
8368                 if (rdev->wiphy.max_num_csa_counters &&
8369                     (params.n_counter_offsets_presp >
8370                      rdev->wiphy.max_num_csa_counters))
8371                         return -EINVAL;
8372
8373                 params.counter_offsets_presp =
8374                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8375
8376                 /* sanity checks - counters should fit and be the same */
8377                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8378                         u16 offset = params.counter_offsets_presp[i];
8379
8380                         if (offset >= params.beacon_csa.probe_resp_len)
8381                                 return -EINVAL;
8382
8383                         if (params.beacon_csa.probe_resp[offset] !=
8384                             params.count)
8385                                 return -EINVAL;
8386                 }
8387         }
8388
8389 skip_beacons:
8390         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8391         if (err)
8392                 return err;
8393
8394         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8395                                            wdev->iftype))
8396                 return -EINVAL;
8397
8398         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8399                                             &params.chandef,
8400                                             wdev->iftype);
8401         if (err < 0)
8402                 return err;
8403
8404         if (err > 0) {
8405                 params.radar_required = true;
8406                 if (need_handle_dfs_flag &&
8407                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8408                         return -EINVAL;
8409                 }
8410         }
8411
8412         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8413                 params.block_tx = true;
8414
8415         wdev_lock(wdev);
8416         err = rdev_channel_switch(rdev, dev, &params);
8417         wdev_unlock(wdev);
8418
8419         return err;
8420 }
8421
8422 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8423                             u32 seq, int flags,
8424                             struct cfg80211_registered_device *rdev,
8425                             struct wireless_dev *wdev,
8426                             struct cfg80211_internal_bss *intbss)
8427 {
8428         struct cfg80211_bss *res = &intbss->pub;
8429         const struct cfg80211_bss_ies *ies;
8430         void *hdr;
8431         struct nlattr *bss;
8432
8433         ASSERT_WDEV_LOCK(wdev);
8434
8435         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8436                              NL80211_CMD_NEW_SCAN_RESULTS);
8437         if (!hdr)
8438                 return -1;
8439
8440         genl_dump_check_consistent(cb, hdr);
8441
8442         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8443                 goto nla_put_failure;
8444         if (wdev->netdev &&
8445             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8446                 goto nla_put_failure;
8447         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8448                               NL80211_ATTR_PAD))
8449                 goto nla_put_failure;
8450
8451         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8452         if (!bss)
8453                 goto nla_put_failure;
8454         if ((!is_zero_ether_addr(res->bssid) &&
8455              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8456                 goto nla_put_failure;
8457
8458         rcu_read_lock();
8459         /* indicate whether we have probe response data or not */
8460         if (rcu_access_pointer(res->proberesp_ies) &&
8461             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8462                 goto fail_unlock_rcu;
8463
8464         /* this pointer prefers to be pointed to probe response data
8465          * but is always valid
8466          */
8467         ies = rcu_dereference(res->ies);
8468         if (ies) {
8469                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8470                                       NL80211_BSS_PAD))
8471                         goto fail_unlock_rcu;
8472                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8473                                         ies->len, ies->data))
8474                         goto fail_unlock_rcu;
8475         }
8476
8477         /* and this pointer is always (unless driver didn't know) beacon data */
8478         ies = rcu_dereference(res->beacon_ies);
8479         if (ies && ies->from_beacon) {
8480                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8481                                       NL80211_BSS_PAD))
8482                         goto fail_unlock_rcu;
8483                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8484                                         ies->len, ies->data))
8485                         goto fail_unlock_rcu;
8486         }
8487         rcu_read_unlock();
8488
8489         if (res->beacon_interval &&
8490             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8491                 goto nla_put_failure;
8492         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8493             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8494             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8495             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8496                         jiffies_to_msecs(jiffies - intbss->ts)))
8497                 goto nla_put_failure;
8498
8499         if (intbss->parent_tsf &&
8500             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8501                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8502              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8503                      intbss->parent_bssid)))
8504                 goto nla_put_failure;
8505
8506         if (intbss->ts_boottime &&
8507             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8508                               intbss->ts_boottime, NL80211_BSS_PAD))
8509                 goto nla_put_failure;
8510
8511         if (!nl80211_put_signal(msg, intbss->pub.chains,
8512                                 intbss->pub.chain_signal,
8513                                 NL80211_BSS_CHAIN_SIGNAL))
8514                 goto nla_put_failure;
8515
8516         switch (rdev->wiphy.signal_type) {
8517         case CFG80211_SIGNAL_TYPE_MBM:
8518                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8519                         goto nla_put_failure;
8520                 break;
8521         case CFG80211_SIGNAL_TYPE_UNSPEC:
8522                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8523                         goto nla_put_failure;
8524                 break;
8525         default:
8526                 break;
8527         }
8528
8529         switch (wdev->iftype) {
8530         case NL80211_IFTYPE_P2P_CLIENT:
8531         case NL80211_IFTYPE_STATION:
8532                 if (intbss == wdev->current_bss &&
8533                     nla_put_u32(msg, NL80211_BSS_STATUS,
8534                                 NL80211_BSS_STATUS_ASSOCIATED))
8535                         goto nla_put_failure;
8536                 break;
8537         case NL80211_IFTYPE_ADHOC:
8538                 if (intbss == wdev->current_bss &&
8539                     nla_put_u32(msg, NL80211_BSS_STATUS,
8540                                 NL80211_BSS_STATUS_IBSS_JOINED))
8541                         goto nla_put_failure;
8542                 break;
8543         default:
8544                 break;
8545         }
8546
8547         nla_nest_end(msg, bss);
8548
8549         genlmsg_end(msg, hdr);
8550         return 0;
8551
8552  fail_unlock_rcu:
8553         rcu_read_unlock();
8554  nla_put_failure:
8555         genlmsg_cancel(msg, hdr);
8556         return -EMSGSIZE;
8557 }
8558
8559 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8560 {
8561         struct cfg80211_registered_device *rdev;
8562         struct cfg80211_internal_bss *scan;
8563         struct wireless_dev *wdev;
8564         int start = cb->args[2], idx = 0;
8565         int err;
8566
8567         rtnl_lock();
8568         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8569         if (err) {
8570                 rtnl_unlock();
8571                 return err;
8572         }
8573
8574         wdev_lock(wdev);
8575         spin_lock_bh(&rdev->bss_lock);
8576
8577         /*
8578          * dump_scan will be called multiple times to break up the scan results
8579          * into multiple messages.  It is unlikely that any more bss-es will be
8580          * expired after the first call, so only call only call this on the
8581          * first dump_scan invocation.
8582          */
8583         if (start == 0)
8584                 cfg80211_bss_expire(rdev);
8585
8586         cb->seq = rdev->bss_generation;
8587
8588         list_for_each_entry(scan, &rdev->bss_list, list) {
8589                 if (++idx <= start)
8590                         continue;
8591                 if (nl80211_send_bss(skb, cb,
8592                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8593                                 rdev, wdev, scan) < 0) {
8594                         idx--;
8595                         break;
8596                 }
8597         }
8598
8599         spin_unlock_bh(&rdev->bss_lock);
8600         wdev_unlock(wdev);
8601
8602         cb->args[2] = idx;
8603         rtnl_unlock();
8604
8605         return skb->len;
8606 }
8607
8608 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8609                                int flags, struct net_device *dev,
8610                                bool allow_radio_stats,
8611                                struct survey_info *survey)
8612 {
8613         void *hdr;
8614         struct nlattr *infoattr;
8615
8616         /* skip radio stats if userspace didn't request them */
8617         if (!survey->channel && !allow_radio_stats)
8618                 return 0;
8619
8620         hdr = nl80211hdr_put(msg, portid, seq, flags,
8621                              NL80211_CMD_NEW_SURVEY_RESULTS);
8622         if (!hdr)
8623                 return -ENOMEM;
8624
8625         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8626                 goto nla_put_failure;
8627
8628         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8629         if (!infoattr)
8630                 goto nla_put_failure;
8631
8632         if (survey->channel &&
8633             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8634                         survey->channel->center_freq))
8635                 goto nla_put_failure;
8636
8637         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8638             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8639                 goto nla_put_failure;
8640         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8641             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8642                 goto nla_put_failure;
8643         if ((survey->filled & SURVEY_INFO_TIME) &&
8644             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8645                         survey->time, NL80211_SURVEY_INFO_PAD))
8646                 goto nla_put_failure;
8647         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8648             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8649                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8650                 goto nla_put_failure;
8651         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8652             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8653                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8654                 goto nla_put_failure;
8655         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8656             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8657                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8658                 goto nla_put_failure;
8659         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8660             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8661                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8662                 goto nla_put_failure;
8663         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8664             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8665                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8666                 goto nla_put_failure;
8667
8668         nla_nest_end(msg, infoattr);
8669
8670         genlmsg_end(msg, hdr);
8671         return 0;
8672
8673  nla_put_failure:
8674         genlmsg_cancel(msg, hdr);
8675         return -EMSGSIZE;
8676 }
8677
8678 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8679 {
8680         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8681         struct survey_info survey;
8682         struct cfg80211_registered_device *rdev;
8683         struct wireless_dev *wdev;
8684         int survey_idx = cb->args[2];
8685         int res;
8686         bool radio_stats;
8687
8688         rtnl_lock();
8689         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8690         if (res)
8691                 goto out_err;
8692
8693         /* prepare_wdev_dump parsed the attributes */
8694         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8695
8696         if (!wdev->netdev) {
8697                 res = -EINVAL;
8698                 goto out_err;
8699         }
8700
8701         if (!rdev->ops->dump_survey) {
8702                 res = -EOPNOTSUPP;
8703                 goto out_err;
8704         }
8705
8706         while (1) {
8707                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8708                 if (res == -ENOENT)
8709                         break;
8710                 if (res)
8711                         goto out_err;
8712
8713                 /* don't send disabled channels, but do send non-channel data */
8714                 if (survey.channel &&
8715                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8716                         survey_idx++;
8717                         continue;
8718                 }
8719
8720                 if (nl80211_send_survey(skb,
8721                                 NETLINK_CB(cb->skb).portid,
8722                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8723                                 wdev->netdev, radio_stats, &survey) < 0)
8724                         goto out;
8725                 survey_idx++;
8726         }
8727
8728  out:
8729         cb->args[2] = survey_idx;
8730         res = skb->len;
8731  out_err:
8732         rtnl_unlock();
8733         return res;
8734 }
8735
8736 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8737 {
8738         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8739                                   NL80211_WPA_VERSION_2 |
8740                                   NL80211_WPA_VERSION_3));
8741 }
8742
8743 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8744 {
8745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8746         struct net_device *dev = info->user_ptr[1];
8747         struct ieee80211_channel *chan;
8748         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8749         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8750         enum nl80211_auth_type auth_type;
8751         struct key_parse key;
8752         bool local_state_change;
8753
8754         if (!info->attrs[NL80211_ATTR_MAC])
8755                 return -EINVAL;
8756
8757         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8758                 return -EINVAL;
8759
8760         if (!info->attrs[NL80211_ATTR_SSID])
8761                 return -EINVAL;
8762
8763         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8764                 return -EINVAL;
8765
8766         err = nl80211_parse_key(info, &key);
8767         if (err)
8768                 return err;
8769
8770         if (key.idx >= 0) {
8771                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8772                         return -EINVAL;
8773                 if (!key.p.key || !key.p.key_len)
8774                         return -EINVAL;
8775                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8776                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8777                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8778                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8779                         return -EINVAL;
8780                 if (key.idx > 3)
8781                         return -EINVAL;
8782         } else {
8783                 key.p.key_len = 0;
8784                 key.p.key = NULL;
8785         }
8786
8787         if (key.idx >= 0) {
8788                 int i;
8789                 bool ok = false;
8790
8791                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8792                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8793                                 ok = true;
8794                                 break;
8795                         }
8796                 }
8797                 if (!ok)
8798                         return -EINVAL;
8799         }
8800
8801         if (!rdev->ops->auth)
8802                 return -EOPNOTSUPP;
8803
8804         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8805             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8806                 return -EOPNOTSUPP;
8807
8808         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8809         chan = nl80211_get_valid_chan(&rdev->wiphy,
8810                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8811         if (!chan)
8812                 return -EINVAL;
8813
8814         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8815         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8816
8817         if (info->attrs[NL80211_ATTR_IE]) {
8818                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8819                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8820         }
8821
8822         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8823         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8824                 return -EINVAL;
8825
8826         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8827              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8828              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8829              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8830             !info->attrs[NL80211_ATTR_AUTH_DATA])
8831                 return -EINVAL;
8832
8833         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8834                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8835                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8836                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8837                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8838                         return -EINVAL;
8839                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8840                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8841                 /* need to include at least Auth Transaction and Status Code */
8842                 if (auth_data_len < 4)
8843                         return -EINVAL;
8844         }
8845
8846         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8847
8848         /*
8849          * Since we no longer track auth state, ignore
8850          * requests to only change local state.
8851          */
8852         if (local_state_change)
8853                 return 0;
8854
8855         wdev_lock(dev->ieee80211_ptr);
8856         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8857                                  ssid, ssid_len, ie, ie_len,
8858                                  key.p.key, key.p.key_len, key.idx,
8859                                  auth_data, auth_data_len);
8860         wdev_unlock(dev->ieee80211_ptr);
8861         return err;
8862 }
8863
8864 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8865                                      struct genl_info *info)
8866 {
8867         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8868                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8869                 return -EINVAL;
8870         }
8871
8872         if (!rdev->ops->tx_control_port ||
8873             !wiphy_ext_feature_isset(&rdev->wiphy,
8874                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8875                 return -EOPNOTSUPP;
8876
8877         return 0;
8878 }
8879
8880 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8881                                    struct genl_info *info,
8882                                    struct cfg80211_crypto_settings *settings,
8883                                    int cipher_limit)
8884 {
8885         memset(settings, 0, sizeof(*settings));
8886
8887         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8888
8889         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8890                 u16 proto;
8891
8892                 proto = nla_get_u16(
8893                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8894                 settings->control_port_ethertype = cpu_to_be16(proto);
8895                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8896                     proto != ETH_P_PAE)
8897                         return -EINVAL;
8898                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8899                         settings->control_port_no_encrypt = true;
8900         } else
8901                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8902
8903         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8904                 int r = validate_pae_over_nl80211(rdev, info);
8905
8906                 if (r < 0)
8907                         return r;
8908
8909                 settings->control_port_over_nl80211 = true;
8910         }
8911
8912         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8913                 void *data;
8914                 int len, i;
8915
8916                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8917                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8918                 settings->n_ciphers_pairwise = len / sizeof(u32);
8919
8920                 if (len % sizeof(u32))
8921                         return -EINVAL;
8922
8923                 if (settings->n_ciphers_pairwise > cipher_limit)
8924                         return -EINVAL;
8925
8926                 memcpy(settings->ciphers_pairwise, data, len);
8927
8928                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8929                         if (!cfg80211_supported_cipher_suite(
8930                                         &rdev->wiphy,
8931                                         settings->ciphers_pairwise[i]))
8932                                 return -EINVAL;
8933         }
8934
8935         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8936                 settings->cipher_group =
8937                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8938                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8939                                                      settings->cipher_group))
8940                         return -EINVAL;
8941         }
8942
8943         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8944                 settings->wpa_versions =
8945                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8946                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8947                         return -EINVAL;
8948         }
8949
8950         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8951                 void *data;
8952                 int len;
8953
8954                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8955                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8956                 settings->n_akm_suites = len / sizeof(u32);
8957
8958                 if (len % sizeof(u32))
8959                         return -EINVAL;
8960
8961                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8962                         return -EINVAL;
8963
8964                 memcpy(settings->akm_suites, data, len);
8965         }
8966
8967         if (info->attrs[NL80211_ATTR_PMK]) {
8968                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8969                         return -EINVAL;
8970                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8971                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8972                         return -EINVAL;
8973                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8974         }
8975
8976         return 0;
8977 }
8978
8979 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8980 {
8981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8982         struct net_device *dev = info->user_ptr[1];
8983         struct ieee80211_channel *chan;
8984         struct cfg80211_assoc_request req = {};
8985         const u8 *bssid, *ssid;
8986         int err, ssid_len = 0;
8987
8988         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8989             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8990                 return -EPERM;
8991
8992         if (!info->attrs[NL80211_ATTR_MAC] ||
8993             !info->attrs[NL80211_ATTR_SSID] ||
8994             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8995                 return -EINVAL;
8996
8997         if (!rdev->ops->assoc)
8998                 return -EOPNOTSUPP;
8999
9000         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9001             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9002                 return -EOPNOTSUPP;
9003
9004         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9005
9006         chan = nl80211_get_valid_chan(&rdev->wiphy,
9007                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9008         if (!chan)
9009                 return -EINVAL;
9010
9011         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9012         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9013
9014         if (info->attrs[NL80211_ATTR_IE]) {
9015                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9016                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9017         }
9018
9019         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9020                 enum nl80211_mfp mfp =
9021                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9022                 if (mfp == NL80211_MFP_REQUIRED)
9023                         req.use_mfp = true;
9024                 else if (mfp != NL80211_MFP_NO)
9025                         return -EINVAL;
9026         }
9027
9028         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9029                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9030
9031         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9032                 req.flags |= ASSOC_REQ_DISABLE_HT;
9033
9034         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9035                 memcpy(&req.ht_capa_mask,
9036                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9037                        sizeof(req.ht_capa_mask));
9038
9039         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9040                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9041                         return -EINVAL;
9042                 memcpy(&req.ht_capa,
9043                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9044                        sizeof(req.ht_capa));
9045         }
9046
9047         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9048                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9049
9050         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9051                 memcpy(&req.vht_capa_mask,
9052                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9053                        sizeof(req.vht_capa_mask));
9054
9055         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9056                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9057                         return -EINVAL;
9058                 memcpy(&req.vht_capa,
9059                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9060                        sizeof(req.vht_capa));
9061         }
9062
9063         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9064                 if (!((rdev->wiphy.features &
9065                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9066                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9067                     !wiphy_ext_feature_isset(&rdev->wiphy,
9068                                              NL80211_EXT_FEATURE_RRM))
9069                         return -EINVAL;
9070                 req.flags |= ASSOC_REQ_USE_RRM;
9071         }
9072
9073         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9074                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9075                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9076                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9077                         return -EINVAL;
9078                 req.fils_nonces =
9079                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9080         }
9081
9082         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9083         if (!err) {
9084                 wdev_lock(dev->ieee80211_ptr);
9085
9086                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9087                                           ssid, ssid_len, &req);
9088
9089                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9090                         dev->ieee80211_ptr->conn_owner_nlportid =
9091                                 info->snd_portid;
9092                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9093                                bssid, ETH_ALEN);
9094                 }
9095
9096                 wdev_unlock(dev->ieee80211_ptr);
9097         }
9098
9099         return err;
9100 }
9101
9102 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9103 {
9104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9105         struct net_device *dev = info->user_ptr[1];
9106         const u8 *ie = NULL, *bssid;
9107         int ie_len = 0, err;
9108         u16 reason_code;
9109         bool local_state_change;
9110
9111         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9112             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9113                 return -EPERM;
9114
9115         if (!info->attrs[NL80211_ATTR_MAC])
9116                 return -EINVAL;
9117
9118         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9119                 return -EINVAL;
9120
9121         if (!rdev->ops->deauth)
9122                 return -EOPNOTSUPP;
9123
9124         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9125             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9126                 return -EOPNOTSUPP;
9127
9128         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9129
9130         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9131         if (reason_code == 0) {
9132                 /* Reason Code 0 is reserved */
9133                 return -EINVAL;
9134         }
9135
9136         if (info->attrs[NL80211_ATTR_IE]) {
9137                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9138                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9139         }
9140
9141         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9142
9143         wdev_lock(dev->ieee80211_ptr);
9144         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9145                                    local_state_change);
9146         wdev_unlock(dev->ieee80211_ptr);
9147         return err;
9148 }
9149
9150 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9151 {
9152         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9153         struct net_device *dev = info->user_ptr[1];
9154         const u8 *ie = NULL, *bssid;
9155         int ie_len = 0, err;
9156         u16 reason_code;
9157         bool local_state_change;
9158
9159         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9160             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9161                 return -EPERM;
9162
9163         if (!info->attrs[NL80211_ATTR_MAC])
9164                 return -EINVAL;
9165
9166         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9167                 return -EINVAL;
9168
9169         if (!rdev->ops->disassoc)
9170                 return -EOPNOTSUPP;
9171
9172         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9173             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9174                 return -EOPNOTSUPP;
9175
9176         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9177
9178         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9179         if (reason_code == 0) {
9180                 /* Reason Code 0 is reserved */
9181                 return -EINVAL;
9182         }
9183
9184         if (info->attrs[NL80211_ATTR_IE]) {
9185                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9186                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9187         }
9188
9189         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9190
9191         wdev_lock(dev->ieee80211_ptr);
9192         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9193                                      local_state_change);
9194         wdev_unlock(dev->ieee80211_ptr);
9195         return err;
9196 }
9197
9198 static bool
9199 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9200                          int mcast_rate[NUM_NL80211_BANDS],
9201                          int rateval)
9202 {
9203         struct wiphy *wiphy = &rdev->wiphy;
9204         bool found = false;
9205         int band, i;
9206
9207         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9208                 struct ieee80211_supported_band *sband;
9209
9210                 sband = wiphy->bands[band];
9211                 if (!sband)
9212                         continue;
9213
9214                 for (i = 0; i < sband->n_bitrates; i++) {
9215                         if (sband->bitrates[i].bitrate == rateval) {
9216                                 mcast_rate[band] = i + 1;
9217                                 found = true;
9218                                 break;
9219                         }
9220                 }
9221         }
9222
9223         return found;
9224 }
9225
9226 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9227 {
9228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9229         struct net_device *dev = info->user_ptr[1];
9230         struct cfg80211_ibss_params ibss;
9231         struct wiphy *wiphy;
9232         struct cfg80211_cached_keys *connkeys = NULL;
9233         int err;
9234
9235         memset(&ibss, 0, sizeof(ibss));
9236
9237         if (!info->attrs[NL80211_ATTR_SSID] ||
9238             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9239                 return -EINVAL;
9240
9241         ibss.beacon_interval = 100;
9242
9243         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9244                 ibss.beacon_interval =
9245                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9246
9247         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9248                                            ibss.beacon_interval);
9249         if (err)
9250                 return err;
9251
9252         if (!rdev->ops->join_ibss)
9253                 return -EOPNOTSUPP;
9254
9255         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9256                 return -EOPNOTSUPP;
9257
9258         wiphy = &rdev->wiphy;
9259
9260         if (info->attrs[NL80211_ATTR_MAC]) {
9261                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9262
9263                 if (!is_valid_ether_addr(ibss.bssid))
9264                         return -EINVAL;
9265         }
9266         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9267         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9268
9269         if (info->attrs[NL80211_ATTR_IE]) {
9270                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9271                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9272         }
9273
9274         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9275         if (err)
9276                 return err;
9277
9278         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9279                                      NL80211_IFTYPE_ADHOC))
9280                 return -EINVAL;
9281
9282         switch (ibss.chandef.width) {
9283         case NL80211_CHAN_WIDTH_5:
9284         case NL80211_CHAN_WIDTH_10:
9285         case NL80211_CHAN_WIDTH_20_NOHT:
9286                 break;
9287         case NL80211_CHAN_WIDTH_20:
9288         case NL80211_CHAN_WIDTH_40:
9289                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9290                         return -EINVAL;
9291                 break;
9292         case NL80211_CHAN_WIDTH_80:
9293         case NL80211_CHAN_WIDTH_80P80:
9294         case NL80211_CHAN_WIDTH_160:
9295                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9296                         return -EINVAL;
9297                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9298                                              NL80211_EXT_FEATURE_VHT_IBSS))
9299                         return -EINVAL;
9300                 break;
9301         default:
9302                 return -EINVAL;
9303         }
9304
9305         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9306         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9307
9308         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9309                 u8 *rates =
9310                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9311                 int n_rates =
9312                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9313                 struct ieee80211_supported_band *sband =
9314                         wiphy->bands[ibss.chandef.chan->band];
9315
9316                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9317                                              &ibss.basic_rates);
9318                 if (err)
9319                         return err;
9320         }
9321
9322         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9323                 memcpy(&ibss.ht_capa_mask,
9324                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9325                        sizeof(ibss.ht_capa_mask));
9326
9327         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9328                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9329                         return -EINVAL;
9330                 memcpy(&ibss.ht_capa,
9331                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9332                        sizeof(ibss.ht_capa));
9333         }
9334
9335         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9336             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9337                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9338                 return -EINVAL;
9339
9340         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9341                 bool no_ht = false;
9342
9343                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9344                 if (IS_ERR(connkeys))
9345                         return PTR_ERR(connkeys);
9346
9347                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9348                     no_ht) {
9349                         kzfree(connkeys);
9350                         return -EINVAL;
9351                 }
9352         }
9353
9354         ibss.control_port =
9355                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9356
9357         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9358                 int r = validate_pae_over_nl80211(rdev, info);
9359
9360                 if (r < 0) {
9361                         kzfree(connkeys);
9362                         return r;
9363                 }
9364
9365                 ibss.control_port_over_nl80211 = true;
9366         }
9367
9368         ibss.userspace_handles_dfs =
9369                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9370
9371         wdev_lock(dev->ieee80211_ptr);
9372         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9373         if (err)
9374                 kzfree(connkeys);
9375         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9376                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9377         wdev_unlock(dev->ieee80211_ptr);
9378
9379         return err;
9380 }
9381
9382 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9383 {
9384         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9385         struct net_device *dev = info->user_ptr[1];
9386
9387         if (!rdev->ops->leave_ibss)
9388                 return -EOPNOTSUPP;
9389
9390         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9391                 return -EOPNOTSUPP;
9392
9393         return cfg80211_leave_ibss(rdev, dev, false);
9394 }
9395
9396 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9397 {
9398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9399         struct net_device *dev = info->user_ptr[1];
9400         int mcast_rate[NUM_NL80211_BANDS];
9401         u32 nla_rate;
9402         int err;
9403
9404         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9405             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9406             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9407                 return -EOPNOTSUPP;
9408
9409         if (!rdev->ops->set_mcast_rate)
9410                 return -EOPNOTSUPP;
9411
9412         memset(mcast_rate, 0, sizeof(mcast_rate));
9413
9414         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9415                 return -EINVAL;
9416
9417         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9418         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9419                 return -EINVAL;
9420
9421         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9422
9423         return err;
9424 }
9425
9426 static struct sk_buff *
9427 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9428                             struct wireless_dev *wdev, int approxlen,
9429                             u32 portid, u32 seq, enum nl80211_commands cmd,
9430                             enum nl80211_attrs attr,
9431                             const struct nl80211_vendor_cmd_info *info,
9432                             gfp_t gfp)
9433 {
9434         struct sk_buff *skb;
9435         void *hdr;
9436         struct nlattr *data;
9437
9438         skb = nlmsg_new(approxlen + 100, gfp);
9439         if (!skb)
9440                 return NULL;
9441
9442         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9443         if (!hdr) {
9444                 kfree_skb(skb);
9445                 return NULL;
9446         }
9447
9448         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9449                 goto nla_put_failure;
9450
9451         if (info) {
9452                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9453                                 info->vendor_id))
9454                         goto nla_put_failure;
9455                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9456                                 info->subcmd))
9457                         goto nla_put_failure;
9458         }
9459
9460         if (wdev) {
9461                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9462                                       wdev_id(wdev), NL80211_ATTR_PAD))
9463                         goto nla_put_failure;
9464                 if (wdev->netdev &&
9465                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9466                                 wdev->netdev->ifindex))
9467                         goto nla_put_failure;
9468         }
9469
9470         data = nla_nest_start_noflag(skb, attr);
9471         if (!data)
9472                 goto nla_put_failure;
9473
9474         ((void **)skb->cb)[0] = rdev;
9475         ((void **)skb->cb)[1] = hdr;
9476         ((void **)skb->cb)[2] = data;
9477
9478         return skb;
9479
9480  nla_put_failure:
9481         kfree_skb(skb);
9482         return NULL;
9483 }
9484
9485 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9486                                            struct wireless_dev *wdev,
9487                                            enum nl80211_commands cmd,
9488                                            enum nl80211_attrs attr,
9489                                            unsigned int portid,
9490                                            int vendor_event_idx,
9491                                            int approxlen, gfp_t gfp)
9492 {
9493         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9494         const struct nl80211_vendor_cmd_info *info;
9495
9496         switch (cmd) {
9497         case NL80211_CMD_TESTMODE:
9498                 if (WARN_ON(vendor_event_idx != -1))
9499                         return NULL;
9500                 info = NULL;
9501                 break;
9502         case NL80211_CMD_VENDOR:
9503                 if (WARN_ON(vendor_event_idx < 0 ||
9504                             vendor_event_idx >= wiphy->n_vendor_events))
9505                         return NULL;
9506                 info = &wiphy->vendor_events[vendor_event_idx];
9507                 break;
9508         default:
9509                 WARN_ON(1);
9510                 return NULL;
9511         }
9512
9513         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9514                                            cmd, attr, info, gfp);
9515 }
9516 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9517
9518 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9519 {
9520         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9521         void *hdr = ((void **)skb->cb)[1];
9522         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9523         struct nlattr *data = ((void **)skb->cb)[2];
9524         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9525
9526         /* clear CB data for netlink core to own from now on */
9527         memset(skb->cb, 0, sizeof(skb->cb));
9528
9529         nla_nest_end(skb, data);
9530         genlmsg_end(skb, hdr);
9531
9532         if (nlhdr->nlmsg_pid) {
9533                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9534                                 nlhdr->nlmsg_pid);
9535         } else {
9536                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9537                         mcgrp = NL80211_MCGRP_VENDOR;
9538
9539                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9540                                         skb, 0, mcgrp, gfp);
9541         }
9542 }
9543 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9544
9545 #ifdef CONFIG_NL80211_TESTMODE
9546 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9547 {
9548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9549         struct wireless_dev *wdev =
9550                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9551         int err;
9552
9553         if (!rdev->ops->testmode_cmd)
9554                 return -EOPNOTSUPP;
9555
9556         if (IS_ERR(wdev)) {
9557                 err = PTR_ERR(wdev);
9558                 if (err != -EINVAL)
9559                         return err;
9560                 wdev = NULL;
9561         } else if (wdev->wiphy != &rdev->wiphy) {
9562                 return -EINVAL;
9563         }
9564
9565         if (!info->attrs[NL80211_ATTR_TESTDATA])
9566                 return -EINVAL;
9567
9568         rdev->cur_cmd_info = info;
9569         err = rdev_testmode_cmd(rdev, wdev,
9570                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9571                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9572         rdev->cur_cmd_info = NULL;
9573
9574         return err;
9575 }
9576
9577 static int nl80211_testmode_dump(struct sk_buff *skb,
9578                                  struct netlink_callback *cb)
9579 {
9580         struct cfg80211_registered_device *rdev;
9581         int err;
9582         long phy_idx;
9583         void *data = NULL;
9584         int data_len = 0;
9585
9586         rtnl_lock();
9587
9588         if (cb->args[0]) {
9589                 /*
9590                  * 0 is a valid index, but not valid for args[0],
9591                  * so we need to offset by 1.
9592                  */
9593                 phy_idx = cb->args[0] - 1;
9594
9595                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9596                 if (!rdev) {
9597                         err = -ENOENT;
9598                         goto out_err;
9599                 }
9600         } else {
9601                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9602
9603                 err = nlmsg_parse_deprecated(cb->nlh,
9604                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9605                                              attrbuf, nl80211_fam.maxattr,
9606                                              nl80211_policy, NULL);
9607                 if (err)
9608                         goto out_err;
9609
9610                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9611                 if (IS_ERR(rdev)) {
9612                         err = PTR_ERR(rdev);
9613                         goto out_err;
9614                 }
9615                 phy_idx = rdev->wiphy_idx;
9616
9617                 if (attrbuf[NL80211_ATTR_TESTDATA])
9618                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9619         }
9620
9621         if (cb->args[1]) {
9622                 data = nla_data((void *)cb->args[1]);
9623                 data_len = nla_len((void *)cb->args[1]);
9624         }
9625
9626         if (!rdev->ops->testmode_dump) {
9627                 err = -EOPNOTSUPP;
9628                 goto out_err;
9629         }
9630
9631         while (1) {
9632                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9633                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9634                                            NL80211_CMD_TESTMODE);
9635                 struct nlattr *tmdata;
9636
9637                 if (!hdr)
9638                         break;
9639
9640                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9641                         genlmsg_cancel(skb, hdr);
9642                         break;
9643                 }
9644
9645                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9646                 if (!tmdata) {
9647                         genlmsg_cancel(skb, hdr);
9648                         break;
9649                 }
9650                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9651                 nla_nest_end(skb, tmdata);
9652
9653                 if (err == -ENOBUFS || err == -ENOENT) {
9654                         genlmsg_cancel(skb, hdr);
9655                         break;
9656                 } else if (err) {
9657                         genlmsg_cancel(skb, hdr);
9658                         goto out_err;
9659                 }
9660
9661                 genlmsg_end(skb, hdr);
9662         }
9663
9664         err = skb->len;
9665         /* see above */
9666         cb->args[0] = phy_idx + 1;
9667  out_err:
9668         rtnl_unlock();
9669         return err;
9670 }
9671 #endif
9672
9673 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9674 {
9675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9676         struct net_device *dev = info->user_ptr[1];
9677         struct cfg80211_connect_params connect;
9678         struct wiphy *wiphy;
9679         struct cfg80211_cached_keys *connkeys = NULL;
9680         int err;
9681
9682         memset(&connect, 0, sizeof(connect));
9683
9684         if (!info->attrs[NL80211_ATTR_SSID] ||
9685             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9686                 return -EINVAL;
9687
9688         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9689                 connect.auth_type =
9690                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9691                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9692                                              NL80211_CMD_CONNECT))
9693                         return -EINVAL;
9694         } else
9695                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9696
9697         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9698
9699         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9700             !wiphy_ext_feature_isset(&rdev->wiphy,
9701                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9702                 return -EINVAL;
9703         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9704
9705         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9706                                       NL80211_MAX_NR_CIPHER_SUITES);
9707         if (err)
9708                 return err;
9709
9710         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9711             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9712                 return -EOPNOTSUPP;
9713
9714         wiphy = &rdev->wiphy;
9715
9716         connect.bg_scan_period = -1;
9717         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9718                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9719                 connect.bg_scan_period =
9720                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9721         }
9722
9723         if (info->attrs[NL80211_ATTR_MAC])
9724                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9725         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9726                 connect.bssid_hint =
9727                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9728         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9729         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9730
9731         if (info->attrs[NL80211_ATTR_IE]) {
9732                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9733                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9734         }
9735
9736         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9737                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9738                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9739                     !wiphy_ext_feature_isset(&rdev->wiphy,
9740                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9741                         return -EOPNOTSUPP;
9742         } else {
9743                 connect.mfp = NL80211_MFP_NO;
9744         }
9745
9746         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9747                 connect.prev_bssid =
9748                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9749
9750         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9751                 connect.channel = nl80211_get_valid_chan(
9752                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9753                 if (!connect.channel)
9754                         return -EINVAL;
9755         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9756                 connect.channel_hint = nl80211_get_valid_chan(
9757                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9758                 if (!connect.channel_hint)
9759                         return -EINVAL;
9760         }
9761
9762         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9763                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9764                 if (IS_ERR(connkeys))
9765                         return PTR_ERR(connkeys);
9766         }
9767
9768         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9769                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9770
9771         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9772                 memcpy(&connect.ht_capa_mask,
9773                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9774                        sizeof(connect.ht_capa_mask));
9775
9776         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9777                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9778                         kzfree(connkeys);
9779                         return -EINVAL;
9780                 }
9781                 memcpy(&connect.ht_capa,
9782                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9783                        sizeof(connect.ht_capa));
9784         }
9785
9786         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9787                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9788
9789         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9790                 memcpy(&connect.vht_capa_mask,
9791                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9792                        sizeof(connect.vht_capa_mask));
9793
9794         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9795                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9796                         kzfree(connkeys);
9797                         return -EINVAL;
9798                 }
9799                 memcpy(&connect.vht_capa,
9800                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9801                        sizeof(connect.vht_capa));
9802         }
9803
9804         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9805                 if (!((rdev->wiphy.features &
9806                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9807                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9808                     !wiphy_ext_feature_isset(&rdev->wiphy,
9809                                              NL80211_EXT_FEATURE_RRM)) {
9810                         kzfree(connkeys);
9811                         return -EINVAL;
9812                 }
9813                 connect.flags |= ASSOC_REQ_USE_RRM;
9814         }
9815
9816         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9817         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9818                 kzfree(connkeys);
9819                 return -EOPNOTSUPP;
9820         }
9821
9822         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9823                 /* bss selection makes no sense if bssid is set */
9824                 if (connect.bssid) {
9825                         kzfree(connkeys);
9826                         return -EINVAL;
9827                 }
9828
9829                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9830                                        wiphy, &connect.bss_select);
9831                 if (err) {
9832                         kzfree(connkeys);
9833                         return err;
9834                 }
9835         }
9836
9837         if (wiphy_ext_feature_isset(&rdev->wiphy,
9838                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9839             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9840             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9841             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9842             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9843                 connect.fils_erp_username =
9844                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9845                 connect.fils_erp_username_len =
9846                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9847                 connect.fils_erp_realm =
9848                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9849                 connect.fils_erp_realm_len =
9850                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9851                 connect.fils_erp_next_seq_num =
9852                         nla_get_u16(
9853                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9854                 connect.fils_erp_rrk =
9855                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9856                 connect.fils_erp_rrk_len =
9857                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9858         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9859                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9860                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9861                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9862                 kzfree(connkeys);
9863                 return -EINVAL;
9864         }
9865
9866         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9867                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9868                         kzfree(connkeys);
9869                         GENL_SET_ERR_MSG(info,
9870                                          "external auth requires connection ownership");
9871                         return -EINVAL;
9872                 }
9873                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9874         }
9875
9876         wdev_lock(dev->ieee80211_ptr);
9877
9878         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9879                                connect.prev_bssid);
9880         if (err)
9881                 kzfree(connkeys);
9882
9883         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9884                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9885                 if (connect.bssid)
9886                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9887                                connect.bssid, ETH_ALEN);
9888                 else
9889                         memset(dev->ieee80211_ptr->disconnect_bssid,
9890                                0, ETH_ALEN);
9891         }
9892
9893         wdev_unlock(dev->ieee80211_ptr);
9894
9895         return err;
9896 }
9897
9898 static int nl80211_update_connect_params(struct sk_buff *skb,
9899                                          struct genl_info *info)
9900 {
9901         struct cfg80211_connect_params connect = {};
9902         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9903         struct net_device *dev = info->user_ptr[1];
9904         struct wireless_dev *wdev = dev->ieee80211_ptr;
9905         bool fils_sk_offload;
9906         u32 auth_type;
9907         u32 changed = 0;
9908         int ret;
9909
9910         if (!rdev->ops->update_connect_params)
9911                 return -EOPNOTSUPP;
9912
9913         if (info->attrs[NL80211_ATTR_IE]) {
9914                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9915                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9916                 changed |= UPDATE_ASSOC_IES;
9917         }
9918
9919         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9920                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9921
9922         /*
9923          * when driver supports fils-sk offload all attributes must be
9924          * provided. So the else covers "fils-sk-not-all" and
9925          * "no-fils-sk-any".
9926          */
9927         if (fils_sk_offload &&
9928             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9929             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9930             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9931             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9932                 connect.fils_erp_username =
9933                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9934                 connect.fils_erp_username_len =
9935                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9936                 connect.fils_erp_realm =
9937                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9938                 connect.fils_erp_realm_len =
9939                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9940                 connect.fils_erp_next_seq_num =
9941                         nla_get_u16(
9942                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9943                 connect.fils_erp_rrk =
9944                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9945                 connect.fils_erp_rrk_len =
9946                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9947                 changed |= UPDATE_FILS_ERP_INFO;
9948         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9949                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9950                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9951                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9952                 return -EINVAL;
9953         }
9954
9955         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9956                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9957                 if (!nl80211_valid_auth_type(rdev, auth_type,
9958                                              NL80211_CMD_CONNECT))
9959                         return -EINVAL;
9960
9961                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9962                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9963                         return -EINVAL;
9964
9965                 connect.auth_type = auth_type;
9966                 changed |= UPDATE_AUTH_TYPE;
9967         }
9968
9969         wdev_lock(dev->ieee80211_ptr);
9970         if (!wdev->current_bss)
9971                 ret = -ENOLINK;
9972         else
9973                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9974         wdev_unlock(dev->ieee80211_ptr);
9975
9976         return ret;
9977 }
9978
9979 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9980 {
9981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9982         struct net_device *dev = info->user_ptr[1];
9983         u16 reason;
9984         int ret;
9985
9986         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9987             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9988                 return -EPERM;
9989
9990         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9991                 reason = WLAN_REASON_DEAUTH_LEAVING;
9992         else
9993                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9994
9995         if (reason == 0)
9996                 return -EINVAL;
9997
9998         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9999             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10000                 return -EOPNOTSUPP;
10001
10002         wdev_lock(dev->ieee80211_ptr);
10003         ret = cfg80211_disconnect(rdev, dev, reason, true);
10004         wdev_unlock(dev->ieee80211_ptr);
10005         return ret;
10006 }
10007
10008 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10009 {
10010         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10011         struct net *net;
10012         int err;
10013
10014         if (info->attrs[NL80211_ATTR_PID]) {
10015                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10016
10017                 net = get_net_ns_by_pid(pid);
10018         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10019                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10020
10021                 net = get_net_ns_by_fd(fd);
10022         } else {
10023                 return -EINVAL;
10024         }
10025
10026         if (IS_ERR(net))
10027                 return PTR_ERR(net);
10028
10029         err = 0;
10030
10031         /* check if anything to do */
10032         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10033                 err = cfg80211_switch_netns(rdev, net);
10034
10035         put_net(net);
10036         return err;
10037 }
10038
10039 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10040 {
10041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10042         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10043                         struct cfg80211_pmksa *pmksa) = NULL;
10044         struct net_device *dev = info->user_ptr[1];
10045         struct cfg80211_pmksa pmksa;
10046
10047         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10048
10049         if (!info->attrs[NL80211_ATTR_PMKID])
10050                 return -EINVAL;
10051
10052         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10053
10054         if (info->attrs[NL80211_ATTR_MAC]) {
10055                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10056         } else if (info->attrs[NL80211_ATTR_SSID] &&
10057                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10058                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10059                     info->attrs[NL80211_ATTR_PMK])) {
10060                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10061                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10062                 pmksa.cache_id =
10063                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10064         } else {
10065                 return -EINVAL;
10066         }
10067         if (info->attrs[NL80211_ATTR_PMK]) {
10068                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10069                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10070         }
10071
10072         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10073             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10074             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10075               wiphy_ext_feature_isset(&rdev->wiphy,
10076                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10077                 return -EOPNOTSUPP;
10078
10079         switch (info->genlhdr->cmd) {
10080         case NL80211_CMD_SET_PMKSA:
10081                 rdev_ops = rdev->ops->set_pmksa;
10082                 break;
10083         case NL80211_CMD_DEL_PMKSA:
10084                 rdev_ops = rdev->ops->del_pmksa;
10085                 break;
10086         default:
10087                 WARN_ON(1);
10088                 break;
10089         }
10090
10091         if (!rdev_ops)
10092                 return -EOPNOTSUPP;
10093
10094         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10095 }
10096
10097 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10098 {
10099         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10100         struct net_device *dev = info->user_ptr[1];
10101
10102         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10103             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10104                 return -EOPNOTSUPP;
10105
10106         if (!rdev->ops->flush_pmksa)
10107                 return -EOPNOTSUPP;
10108
10109         return rdev_flush_pmksa(rdev, dev);
10110 }
10111
10112 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10113 {
10114         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10115         struct net_device *dev = info->user_ptr[1];
10116         u8 action_code, dialog_token;
10117         u32 peer_capability = 0;
10118         u16 status_code;
10119         u8 *peer;
10120         bool initiator;
10121
10122         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10123             !rdev->ops->tdls_mgmt)
10124                 return -EOPNOTSUPP;
10125
10126         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10127             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10128             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10129             !info->attrs[NL80211_ATTR_IE] ||
10130             !info->attrs[NL80211_ATTR_MAC])
10131                 return -EINVAL;
10132
10133         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10134         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10135         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10136         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10137         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10138         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10139                 peer_capability =
10140                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10141
10142         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10143                               dialog_token, status_code, peer_capability,
10144                               initiator,
10145                               nla_data(info->attrs[NL80211_ATTR_IE]),
10146                               nla_len(info->attrs[NL80211_ATTR_IE]));
10147 }
10148
10149 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10150 {
10151         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10152         struct net_device *dev = info->user_ptr[1];
10153         enum nl80211_tdls_operation operation;
10154         u8 *peer;
10155
10156         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10157             !rdev->ops->tdls_oper)
10158                 return -EOPNOTSUPP;
10159
10160         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10161             !info->attrs[NL80211_ATTR_MAC])
10162                 return -EINVAL;
10163
10164         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10165         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10166
10167         return rdev_tdls_oper(rdev, dev, peer, operation);
10168 }
10169
10170 static int nl80211_remain_on_channel(struct sk_buff *skb,
10171                                      struct genl_info *info)
10172 {
10173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10174         struct wireless_dev *wdev = info->user_ptr[1];
10175         struct cfg80211_chan_def chandef;
10176         const struct cfg80211_chan_def *compat_chandef;
10177         struct sk_buff *msg;
10178         void *hdr;
10179         u64 cookie;
10180         u32 duration;
10181         int err;
10182
10183         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10184             !info->attrs[NL80211_ATTR_DURATION])
10185                 return -EINVAL;
10186
10187         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10188
10189         if (!rdev->ops->remain_on_channel ||
10190             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10191                 return -EOPNOTSUPP;
10192
10193         /*
10194          * We should be on that channel for at least a minimum amount of
10195          * time (10ms) but no longer than the driver supports.
10196          */
10197         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10198             duration > rdev->wiphy.max_remain_on_channel_duration)
10199                 return -EINVAL;
10200
10201         err = nl80211_parse_chandef(rdev, info, &chandef);
10202         if (err)
10203                 return err;
10204
10205         wdev_lock(wdev);
10206         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10207             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10208                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10209                                                              &chandef);
10210                 if (compat_chandef != &chandef) {
10211                         wdev_unlock(wdev);
10212                         return -EBUSY;
10213                 }
10214         }
10215         wdev_unlock(wdev);
10216
10217         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10218         if (!msg)
10219                 return -ENOMEM;
10220
10221         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10222                              NL80211_CMD_REMAIN_ON_CHANNEL);
10223         if (!hdr) {
10224                 err = -ENOBUFS;
10225                 goto free_msg;
10226         }
10227
10228         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10229                                      duration, &cookie);
10230
10231         if (err)
10232                 goto free_msg;
10233
10234         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10235                               NL80211_ATTR_PAD))
10236                 goto nla_put_failure;
10237
10238         genlmsg_end(msg, hdr);
10239
10240         return genlmsg_reply(msg, info);
10241
10242  nla_put_failure:
10243         err = -ENOBUFS;
10244  free_msg:
10245         nlmsg_free(msg);
10246         return err;
10247 }
10248
10249 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10250                                             struct genl_info *info)
10251 {
10252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10253         struct wireless_dev *wdev = info->user_ptr[1];
10254         u64 cookie;
10255
10256         if (!info->attrs[NL80211_ATTR_COOKIE])
10257                 return -EINVAL;
10258
10259         if (!rdev->ops->cancel_remain_on_channel)
10260                 return -EOPNOTSUPP;
10261
10262         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10263
10264         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10265 }
10266
10267 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10268                                        struct genl_info *info)
10269 {
10270         struct cfg80211_bitrate_mask mask;
10271         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10272         struct net_device *dev = info->user_ptr[1];
10273         int err;
10274
10275         if (!rdev->ops->set_bitrate_mask)
10276                 return -EOPNOTSUPP;
10277
10278         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10279         if (err)
10280                 return err;
10281
10282         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10283 }
10284
10285 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10286 {
10287         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10288         struct wireless_dev *wdev = info->user_ptr[1];
10289         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10290
10291         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10292                 return -EINVAL;
10293
10294         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10295                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10296
10297         switch (wdev->iftype) {
10298         case NL80211_IFTYPE_STATION:
10299         case NL80211_IFTYPE_ADHOC:
10300         case NL80211_IFTYPE_P2P_CLIENT:
10301         case NL80211_IFTYPE_AP:
10302         case NL80211_IFTYPE_AP_VLAN:
10303         case NL80211_IFTYPE_MESH_POINT:
10304         case NL80211_IFTYPE_P2P_GO:
10305         case NL80211_IFTYPE_P2P_DEVICE:
10306                 break;
10307         case NL80211_IFTYPE_NAN:
10308         default:
10309                 return -EOPNOTSUPP;
10310         }
10311
10312         /* not much point in registering if we can't reply */
10313         if (!rdev->ops->mgmt_tx)
10314                 return -EOPNOTSUPP;
10315
10316         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10317                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10318                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10319 }
10320
10321 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10322 {
10323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10324         struct wireless_dev *wdev = info->user_ptr[1];
10325         struct cfg80211_chan_def chandef;
10326         int err;
10327         void *hdr = NULL;
10328         u64 cookie;
10329         struct sk_buff *msg = NULL;
10330         struct cfg80211_mgmt_tx_params params = {
10331                 .dont_wait_for_ack =
10332                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10333         };
10334
10335         if (!info->attrs[NL80211_ATTR_FRAME])
10336                 return -EINVAL;
10337
10338         if (!rdev->ops->mgmt_tx)
10339                 return -EOPNOTSUPP;
10340
10341         switch (wdev->iftype) {
10342         case NL80211_IFTYPE_P2P_DEVICE:
10343                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10344                         return -EINVAL;
10345         case NL80211_IFTYPE_STATION:
10346         case NL80211_IFTYPE_ADHOC:
10347         case NL80211_IFTYPE_P2P_CLIENT:
10348         case NL80211_IFTYPE_AP:
10349         case NL80211_IFTYPE_AP_VLAN:
10350         case NL80211_IFTYPE_MESH_POINT:
10351         case NL80211_IFTYPE_P2P_GO:
10352                 break;
10353         case NL80211_IFTYPE_NAN:
10354         default:
10355                 return -EOPNOTSUPP;
10356         }
10357
10358         if (info->attrs[NL80211_ATTR_DURATION]) {
10359                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10360                         return -EINVAL;
10361                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10362
10363                 /*
10364                  * We should wait on the channel for at least a minimum amount
10365                  * of time (10ms) but no longer than the driver supports.
10366                  */
10367                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10368                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10369                         return -EINVAL;
10370         }
10371
10372         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10373
10374         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10375                 return -EINVAL;
10376
10377         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10378
10379         /* get the channel if any has been specified, otherwise pass NULL to
10380          * the driver. The latter will use the current one
10381          */
10382         chandef.chan = NULL;
10383         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10384                 err = nl80211_parse_chandef(rdev, info, &chandef);
10385                 if (err)
10386                         return err;
10387         }
10388
10389         if (!chandef.chan && params.offchan)
10390                 return -EINVAL;
10391
10392         wdev_lock(wdev);
10393         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10394                 wdev_unlock(wdev);
10395                 return -EBUSY;
10396         }
10397         wdev_unlock(wdev);
10398
10399         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10400         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10401
10402         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10403                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10404                 int i;
10405
10406                 if (len % sizeof(u16))
10407                         return -EINVAL;
10408
10409                 params.n_csa_offsets = len / sizeof(u16);
10410                 params.csa_offsets =
10411                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10412
10413                 /* check that all the offsets fit the frame */
10414                 for (i = 0; i < params.n_csa_offsets; i++) {
10415                         if (params.csa_offsets[i] >= params.len)
10416                                 return -EINVAL;
10417                 }
10418         }
10419
10420         if (!params.dont_wait_for_ack) {
10421                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10422                 if (!msg)
10423                         return -ENOMEM;
10424
10425                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10426                                      NL80211_CMD_FRAME);
10427                 if (!hdr) {
10428                         err = -ENOBUFS;
10429                         goto free_msg;
10430                 }
10431         }
10432
10433         params.chan = chandef.chan;
10434         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10435         if (err)
10436                 goto free_msg;
10437
10438         if (msg) {
10439                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10440                                       NL80211_ATTR_PAD))
10441                         goto nla_put_failure;
10442
10443                 genlmsg_end(msg, hdr);
10444                 return genlmsg_reply(msg, info);
10445         }
10446
10447         return 0;
10448
10449  nla_put_failure:
10450         err = -ENOBUFS;
10451  free_msg:
10452         nlmsg_free(msg);
10453         return err;
10454 }
10455
10456 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10457 {
10458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10459         struct wireless_dev *wdev = info->user_ptr[1];
10460         u64 cookie;
10461
10462         if (!info->attrs[NL80211_ATTR_COOKIE])
10463                 return -EINVAL;
10464
10465         if (!rdev->ops->mgmt_tx_cancel_wait)
10466                 return -EOPNOTSUPP;
10467
10468         switch (wdev->iftype) {
10469         case NL80211_IFTYPE_STATION:
10470         case NL80211_IFTYPE_ADHOC:
10471         case NL80211_IFTYPE_P2P_CLIENT:
10472         case NL80211_IFTYPE_AP:
10473         case NL80211_IFTYPE_AP_VLAN:
10474         case NL80211_IFTYPE_P2P_GO:
10475         case NL80211_IFTYPE_P2P_DEVICE:
10476                 break;
10477         case NL80211_IFTYPE_NAN:
10478         default:
10479                 return -EOPNOTSUPP;
10480         }
10481
10482         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10483
10484         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10485 }
10486
10487 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10488 {
10489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10490         struct wireless_dev *wdev;
10491         struct net_device *dev = info->user_ptr[1];
10492         u8 ps_state;
10493         bool state;
10494         int err;
10495
10496         if (!info->attrs[NL80211_ATTR_PS_STATE])
10497                 return -EINVAL;
10498
10499         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10500
10501         wdev = dev->ieee80211_ptr;
10502
10503         if (!rdev->ops->set_power_mgmt)
10504                 return -EOPNOTSUPP;
10505
10506         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10507
10508         if (state == wdev->ps)
10509                 return 0;
10510
10511         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10512         if (!err)
10513                 wdev->ps = state;
10514         return err;
10515 }
10516
10517 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10518 {
10519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10520         enum nl80211_ps_state ps_state;
10521         struct wireless_dev *wdev;
10522         struct net_device *dev = info->user_ptr[1];
10523         struct sk_buff *msg;
10524         void *hdr;
10525         int err;
10526
10527         wdev = dev->ieee80211_ptr;
10528
10529         if (!rdev->ops->set_power_mgmt)
10530                 return -EOPNOTSUPP;
10531
10532         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10533         if (!msg)
10534                 return -ENOMEM;
10535
10536         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10537                              NL80211_CMD_GET_POWER_SAVE);
10538         if (!hdr) {
10539                 err = -ENOBUFS;
10540                 goto free_msg;
10541         }
10542
10543         if (wdev->ps)
10544                 ps_state = NL80211_PS_ENABLED;
10545         else
10546                 ps_state = NL80211_PS_DISABLED;
10547
10548         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10549                 goto nla_put_failure;
10550
10551         genlmsg_end(msg, hdr);
10552         return genlmsg_reply(msg, info);
10553
10554  nla_put_failure:
10555         err = -ENOBUFS;
10556  free_msg:
10557         nlmsg_free(msg);
10558         return err;
10559 }
10560
10561 static const struct nla_policy
10562 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10563         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10564         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10565         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10566         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10567         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10568         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10569         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10570 };
10571
10572 static int nl80211_set_cqm_txe(struct genl_info *info,
10573                                u32 rate, u32 pkts, u32 intvl)
10574 {
10575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10576         struct net_device *dev = info->user_ptr[1];
10577         struct wireless_dev *wdev = dev->ieee80211_ptr;
10578
10579         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10580                 return -EINVAL;
10581
10582         if (!rdev->ops->set_cqm_txe_config)
10583                 return -EOPNOTSUPP;
10584
10585         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10586             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10587                 return -EOPNOTSUPP;
10588
10589         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10590 }
10591
10592 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10593                                     struct net_device *dev)
10594 {
10595         struct wireless_dev *wdev = dev->ieee80211_ptr;
10596         s32 last, low, high;
10597         u32 hyst;
10598         int i, n, low_index;
10599         int err;
10600
10601         /* RSSI reporting disabled? */
10602         if (!wdev->cqm_config)
10603                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10604
10605         /*
10606          * Obtain current RSSI value if possible, if not and no RSSI threshold
10607          * event has been received yet, we should receive an event after a
10608          * connection is established and enough beacons received to calculate
10609          * the average.
10610          */
10611         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10612             rdev->ops->get_station) {
10613                 struct station_info sinfo = {};
10614                 u8 *mac_addr;
10615
10616                 mac_addr = wdev->current_bss->pub.bssid;
10617
10618                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10619                 if (err)
10620                         return err;
10621
10622                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10623                         wdev->cqm_config->last_rssi_event_value =
10624                                 (s8) sinfo.rx_beacon_signal_avg;
10625         }
10626
10627         last = wdev->cqm_config->last_rssi_event_value;
10628         hyst = wdev->cqm_config->rssi_hyst;
10629         n = wdev->cqm_config->n_rssi_thresholds;
10630
10631         for (i = 0; i < n; i++)
10632                 if (last < wdev->cqm_config->rssi_thresholds[i])
10633                         break;
10634
10635         low_index = i - 1;
10636         if (low_index >= 0) {
10637                 low_index = array_index_nospec(low_index, n);
10638                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10639         } else {
10640                 low = S32_MIN;
10641         }
10642         if (i < n) {
10643                 i = array_index_nospec(i, n);
10644                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10645         } else {
10646                 high = S32_MAX;
10647         }
10648
10649         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10650 }
10651
10652 static int nl80211_set_cqm_rssi(struct genl_info *info,
10653                                 const s32 *thresholds, int n_thresholds,
10654                                 u32 hysteresis)
10655 {
10656         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10657         struct net_device *dev = info->user_ptr[1];
10658         struct wireless_dev *wdev = dev->ieee80211_ptr;
10659         int i, err;
10660         s32 prev = S32_MIN;
10661
10662         /* Check all values negative and sorted */
10663         for (i = 0; i < n_thresholds; i++) {
10664                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10665                         return -EINVAL;
10666
10667                 prev = thresholds[i];
10668         }
10669
10670         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10671             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10672                 return -EOPNOTSUPP;
10673
10674         wdev_lock(wdev);
10675         cfg80211_cqm_config_free(wdev);
10676         wdev_unlock(wdev);
10677
10678         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10679                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10680                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10681
10682                 return rdev_set_cqm_rssi_config(rdev, dev,
10683                                                 thresholds[0], hysteresis);
10684         }
10685
10686         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10687                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10688                 return -EOPNOTSUPP;
10689
10690         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10691                 n_thresholds = 0;
10692
10693         wdev_lock(wdev);
10694         if (n_thresholds) {
10695                 struct cfg80211_cqm_config *cqm_config;
10696
10697                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10698                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10699                 if (!cqm_config) {
10700                         err = -ENOMEM;
10701                         goto unlock;
10702                 }
10703
10704                 cqm_config->rssi_hyst = hysteresis;
10705                 cqm_config->n_rssi_thresholds = n_thresholds;
10706                 memcpy(cqm_config->rssi_thresholds, thresholds,
10707                        n_thresholds * sizeof(s32));
10708
10709                 wdev->cqm_config = cqm_config;
10710         }
10711
10712         err = cfg80211_cqm_rssi_update(rdev, dev);
10713
10714 unlock:
10715         wdev_unlock(wdev);
10716
10717         return err;
10718 }
10719
10720 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10721 {
10722         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10723         struct nlattr *cqm;
10724         int err;
10725
10726         cqm = info->attrs[NL80211_ATTR_CQM];
10727         if (!cqm)
10728                 return -EINVAL;
10729
10730         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10731                                           nl80211_attr_cqm_policy,
10732                                           info->extack);
10733         if (err)
10734                 return err;
10735
10736         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10737             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10738                 const s32 *thresholds =
10739                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10740                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10741                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10742
10743                 if (len % 4)
10744                         return -EINVAL;
10745
10746                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10747                                             hysteresis);
10748         }
10749
10750         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10751             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10752             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10753                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10754                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10755                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10756
10757                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10758         }
10759
10760         return -EINVAL;
10761 }
10762
10763 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10764 {
10765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10766         struct net_device *dev = info->user_ptr[1];
10767         struct ocb_setup setup = {};
10768         int err;
10769
10770         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10771         if (err)
10772                 return err;
10773
10774         return cfg80211_join_ocb(rdev, dev, &setup);
10775 }
10776
10777 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10778 {
10779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10780         struct net_device *dev = info->user_ptr[1];
10781
10782         return cfg80211_leave_ocb(rdev, dev);
10783 }
10784
10785 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10786 {
10787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10788         struct net_device *dev = info->user_ptr[1];
10789         struct mesh_config cfg;
10790         struct mesh_setup setup;
10791         int err;
10792
10793         /* start with default */
10794         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10795         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10796
10797         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10798                 /* and parse parameters if given */
10799                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10800                 if (err)
10801                         return err;
10802         }
10803
10804         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10805             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10806                 return -EINVAL;
10807
10808         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10809         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10810
10811         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10812             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10813                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10814                         return -EINVAL;
10815
10816         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10817                 setup.beacon_interval =
10818                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10819
10820                 err = cfg80211_validate_beacon_int(rdev,
10821                                                    NL80211_IFTYPE_MESH_POINT,
10822                                                    setup.beacon_interval);
10823                 if (err)
10824                         return err;
10825         }
10826
10827         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10828                 setup.dtim_period =
10829                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10830                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10831                         return -EINVAL;
10832         }
10833
10834         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10835                 /* parse additional setup parameters if given */
10836                 err = nl80211_parse_mesh_setup(info, &setup);
10837                 if (err)
10838                         return err;
10839         }
10840
10841         if (setup.user_mpm)
10842                 cfg.auto_open_plinks = false;
10843
10844         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10845                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10846                 if (err)
10847                         return err;
10848         } else {
10849                 /* __cfg80211_join_mesh() will sort it out */
10850                 setup.chandef.chan = NULL;
10851         }
10852
10853         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10854                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10855                 int n_rates =
10856                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10857                 struct ieee80211_supported_band *sband;
10858
10859                 if (!setup.chandef.chan)
10860                         return -EINVAL;
10861
10862                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10863
10864                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10865                                              &setup.basic_rates);
10866                 if (err)
10867                         return err;
10868         }
10869
10870         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10871                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10872                 if (err)
10873                         return err;
10874
10875                 if (!setup.chandef.chan)
10876                         return -EINVAL;
10877
10878                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10879                                               &setup.beacon_rate);
10880                 if (err)
10881                         return err;
10882         }
10883
10884         setup.userspace_handles_dfs =
10885                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10886
10887         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10888                 int r = validate_pae_over_nl80211(rdev, info);
10889
10890                 if (r < 0)
10891                         return r;
10892
10893                 setup.control_port_over_nl80211 = true;
10894         }
10895
10896         wdev_lock(dev->ieee80211_ptr);
10897         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10898         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10899                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10900         wdev_unlock(dev->ieee80211_ptr);
10901
10902         return err;
10903 }
10904
10905 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10906 {
10907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10908         struct net_device *dev = info->user_ptr[1];
10909
10910         return cfg80211_leave_mesh(rdev, dev);
10911 }
10912
10913 #ifdef CONFIG_PM
10914 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10915                                         struct cfg80211_registered_device *rdev)
10916 {
10917         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10918         struct nlattr *nl_pats, *nl_pat;
10919         int i, pat_len;
10920
10921         if (!wowlan->n_patterns)
10922                 return 0;
10923
10924         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10925         if (!nl_pats)
10926                 return -ENOBUFS;
10927
10928         for (i = 0; i < wowlan->n_patterns; i++) {
10929                 nl_pat = nla_nest_start_noflag(msg, i + 1);
10930                 if (!nl_pat)
10931                         return -ENOBUFS;
10932                 pat_len = wowlan->patterns[i].pattern_len;
10933                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10934                             wowlan->patterns[i].mask) ||
10935                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10936                             wowlan->patterns[i].pattern) ||
10937                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10938                                 wowlan->patterns[i].pkt_offset))
10939                         return -ENOBUFS;
10940                 nla_nest_end(msg, nl_pat);
10941         }
10942         nla_nest_end(msg, nl_pats);
10943
10944         return 0;
10945 }
10946
10947 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10948                                    struct cfg80211_wowlan_tcp *tcp)
10949 {
10950         struct nlattr *nl_tcp;
10951
10952         if (!tcp)
10953                 return 0;
10954
10955         nl_tcp = nla_nest_start_noflag(msg,
10956                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10957         if (!nl_tcp)
10958                 return -ENOBUFS;
10959
10960         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10961             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10962             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10963             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10964             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10965             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10966                     tcp->payload_len, tcp->payload) ||
10967             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10968                         tcp->data_interval) ||
10969             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10970                     tcp->wake_len, tcp->wake_data) ||
10971             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10972                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10973                 return -ENOBUFS;
10974
10975         if (tcp->payload_seq.len &&
10976             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10977                     sizeof(tcp->payload_seq), &tcp->payload_seq))
10978                 return -ENOBUFS;
10979
10980         if (tcp->payload_tok.len &&
10981             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10982                     sizeof(tcp->payload_tok) + tcp->tokens_size,
10983                     &tcp->payload_tok))
10984                 return -ENOBUFS;
10985
10986         nla_nest_end(msg, nl_tcp);
10987
10988         return 0;
10989 }
10990
10991 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10992                                   struct cfg80211_sched_scan_request *req)
10993 {
10994         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10995         int i;
10996
10997         if (!req)
10998                 return 0;
10999
11000         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11001         if (!nd)
11002                 return -ENOBUFS;
11003
11004         if (req->n_scan_plans == 1 &&
11005             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11006                         req->scan_plans[0].interval * 1000))
11007                 return -ENOBUFS;
11008
11009         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11010                 return -ENOBUFS;
11011
11012         if (req->relative_rssi_set) {
11013                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11014
11015                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11016                                req->relative_rssi))
11017                         return -ENOBUFS;
11018
11019                 rssi_adjust.band = req->rssi_adjust.band;
11020                 rssi_adjust.delta = req->rssi_adjust.delta;
11021                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11022                             sizeof(rssi_adjust), &rssi_adjust))
11023                         return -ENOBUFS;
11024         }
11025
11026         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11027         if (!freqs)
11028                 return -ENOBUFS;
11029
11030         for (i = 0; i < req->n_channels; i++) {
11031                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11032                         return -ENOBUFS;
11033         }
11034
11035         nla_nest_end(msg, freqs);
11036
11037         if (req->n_match_sets) {
11038                 matches = nla_nest_start_noflag(msg,
11039                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11040                 if (!matches)
11041                         return -ENOBUFS;
11042
11043                 for (i = 0; i < req->n_match_sets; i++) {
11044                         match = nla_nest_start_noflag(msg, i);
11045                         if (!match)
11046                                 return -ENOBUFS;
11047
11048                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11049                                     req->match_sets[i].ssid.ssid_len,
11050                                     req->match_sets[i].ssid.ssid))
11051                                 return -ENOBUFS;
11052                         nla_nest_end(msg, match);
11053                 }
11054                 nla_nest_end(msg, matches);
11055         }
11056
11057         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11058         if (!scan_plans)
11059                 return -ENOBUFS;
11060
11061         for (i = 0; i < req->n_scan_plans; i++) {
11062                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11063                 if (!scan_plan)
11064                         return -ENOBUFS;
11065
11066                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11067                                 req->scan_plans[i].interval) ||
11068                     (req->scan_plans[i].iterations &&
11069                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11070                                  req->scan_plans[i].iterations)))
11071                         return -ENOBUFS;
11072                 nla_nest_end(msg, scan_plan);
11073         }
11074         nla_nest_end(msg, scan_plans);
11075
11076         nla_nest_end(msg, nd);
11077
11078         return 0;
11079 }
11080
11081 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11082 {
11083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11084         struct sk_buff *msg;
11085         void *hdr;
11086         u32 size = NLMSG_DEFAULT_SIZE;
11087
11088         if (!rdev->wiphy.wowlan)
11089                 return -EOPNOTSUPP;
11090
11091         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11092                 /* adjust size to have room for all the data */
11093                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11094                         rdev->wiphy.wowlan_config->tcp->payload_len +
11095                         rdev->wiphy.wowlan_config->tcp->wake_len +
11096                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11097         }
11098
11099         msg = nlmsg_new(size, GFP_KERNEL);
11100         if (!msg)
11101                 return -ENOMEM;
11102
11103         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11104                              NL80211_CMD_GET_WOWLAN);
11105         if (!hdr)
11106                 goto nla_put_failure;
11107
11108         if (rdev->wiphy.wowlan_config) {
11109                 struct nlattr *nl_wowlan;
11110
11111                 nl_wowlan = nla_nest_start_noflag(msg,
11112                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11113                 if (!nl_wowlan)
11114                         goto nla_put_failure;
11115
11116                 if ((rdev->wiphy.wowlan_config->any &&
11117                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11118                     (rdev->wiphy.wowlan_config->disconnect &&
11119                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11120                     (rdev->wiphy.wowlan_config->magic_pkt &&
11121                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11122                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11123                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11124                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11125                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11126                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11127                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11128                     (rdev->wiphy.wowlan_config->rfkill_release &&
11129                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11130                         goto nla_put_failure;
11131
11132                 if (nl80211_send_wowlan_patterns(msg, rdev))
11133                         goto nla_put_failure;
11134
11135                 if (nl80211_send_wowlan_tcp(msg,
11136                                             rdev->wiphy.wowlan_config->tcp))
11137                         goto nla_put_failure;
11138
11139                 if (nl80211_send_wowlan_nd(
11140                             msg,
11141                             rdev->wiphy.wowlan_config->nd_config))
11142                         goto nla_put_failure;
11143
11144                 nla_nest_end(msg, nl_wowlan);
11145         }
11146
11147         genlmsg_end(msg, hdr);
11148         return genlmsg_reply(msg, info);
11149
11150 nla_put_failure:
11151         nlmsg_free(msg);
11152         return -ENOBUFS;
11153 }
11154
11155 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11156                                     struct nlattr *attr,
11157                                     struct cfg80211_wowlan *trig)
11158 {
11159         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11160         struct cfg80211_wowlan_tcp *cfg;
11161         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11162         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11163         u32 size;
11164         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11165         int err, port;
11166
11167         if (!rdev->wiphy.wowlan->tcp)
11168                 return -EINVAL;
11169
11170         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11171                                           nl80211_wowlan_tcp_policy, NULL);
11172         if (err)
11173                 return err;
11174
11175         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11176             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11177             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11178             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11179             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11180             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11181             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11182             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11183                 return -EINVAL;
11184
11185         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11186         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11187                 return -EINVAL;
11188
11189         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11190                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11191             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11192                 return -EINVAL;
11193
11194         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11195         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11196                 return -EINVAL;
11197
11198         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11199         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11200                 return -EINVAL;
11201
11202         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11203                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11204
11205                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11206                 tokens_size = tokln - sizeof(*tok);
11207
11208                 if (!tok->len || tokens_size % tok->len)
11209                         return -EINVAL;
11210                 if (!rdev->wiphy.wowlan->tcp->tok)
11211                         return -EINVAL;
11212                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11213                         return -EINVAL;
11214                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11215                         return -EINVAL;
11216                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11217                         return -EINVAL;
11218                 if (tok->offset + tok->len > data_size)
11219                         return -EINVAL;
11220         }
11221
11222         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11223                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11224                 if (!rdev->wiphy.wowlan->tcp->seq)
11225                         return -EINVAL;
11226                 if (seq->len == 0 || seq->len > 4)
11227                         return -EINVAL;
11228                 if (seq->len + seq->offset > data_size)
11229                         return -EINVAL;
11230         }
11231
11232         size = sizeof(*cfg);
11233         size += data_size;
11234         size += wake_size + wake_mask_size;
11235         size += tokens_size;
11236
11237         cfg = kzalloc(size, GFP_KERNEL);
11238         if (!cfg)
11239                 return -ENOMEM;
11240         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11241         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11242         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11243                ETH_ALEN);
11244         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11245                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11246         else
11247                 port = 0;
11248 #ifdef CONFIG_INET
11249         /* allocate a socket and port for it and use it */
11250         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11251                             IPPROTO_TCP, &cfg->sock, 1);
11252         if (err) {
11253                 kfree(cfg);
11254                 return err;
11255         }
11256         if (inet_csk_get_port(cfg->sock->sk, port)) {
11257                 sock_release(cfg->sock);
11258                 kfree(cfg);
11259                 return -EADDRINUSE;
11260         }
11261         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11262 #else
11263         if (!port) {
11264                 kfree(cfg);
11265                 return -EINVAL;
11266         }
11267         cfg->src_port = port;
11268 #endif
11269
11270         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11271         cfg->payload_len = data_size;
11272         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11273         memcpy((void *)cfg->payload,
11274                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11275                data_size);
11276         if (seq)
11277                 cfg->payload_seq = *seq;
11278         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11279         cfg->wake_len = wake_size;
11280         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11281         memcpy((void *)cfg->wake_data,
11282                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11283                wake_size);
11284         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11285                          data_size + wake_size;
11286         memcpy((void *)cfg->wake_mask,
11287                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11288                wake_mask_size);
11289         if (tok) {
11290                 cfg->tokens_size = tokens_size;
11291                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11292         }
11293
11294         trig->tcp = cfg;
11295
11296         return 0;
11297 }
11298
11299 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11300                                    const struct wiphy_wowlan_support *wowlan,
11301                                    struct nlattr *attr,
11302                                    struct cfg80211_wowlan *trig)
11303 {
11304         struct nlattr **tb;
11305         int err;
11306
11307         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11308         if (!tb)
11309                 return -ENOMEM;
11310
11311         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11312                 err = -EOPNOTSUPP;
11313                 goto out;
11314         }
11315
11316         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11317                                           nl80211_policy, NULL);
11318         if (err)
11319                 goto out;
11320
11321         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11322                                                    wowlan->max_nd_match_sets);
11323         err = PTR_ERR_OR_ZERO(trig->nd_config);
11324         if (err)
11325                 trig->nd_config = NULL;
11326
11327 out:
11328         kfree(tb);
11329         return err;
11330 }
11331
11332 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11333 {
11334         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11335         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11336         struct cfg80211_wowlan new_triggers = {};
11337         struct cfg80211_wowlan *ntrig;
11338         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11339         int err, i;
11340         bool prev_enabled = rdev->wiphy.wowlan_config;
11341         bool regular = false;
11342
11343         if (!wowlan)
11344                 return -EOPNOTSUPP;
11345
11346         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11347                 cfg80211_rdev_free_wowlan(rdev);
11348                 rdev->wiphy.wowlan_config = NULL;
11349                 goto set_wakeup;
11350         }
11351
11352         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11353                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11354                                           nl80211_wowlan_policy, info->extack);
11355         if (err)
11356                 return err;
11357
11358         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11359                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11360                         return -EINVAL;
11361                 new_triggers.any = true;
11362         }
11363
11364         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11365                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11366                         return -EINVAL;
11367                 new_triggers.disconnect = true;
11368                 regular = true;
11369         }
11370
11371         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11372                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11373                         return -EINVAL;
11374                 new_triggers.magic_pkt = true;
11375                 regular = true;
11376         }
11377
11378         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11379                 return -EINVAL;
11380
11381         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11382                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11383                         return -EINVAL;
11384                 new_triggers.gtk_rekey_failure = true;
11385                 regular = true;
11386         }
11387
11388         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11389                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11390                         return -EINVAL;
11391                 new_triggers.eap_identity_req = true;
11392                 regular = true;
11393         }
11394
11395         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11396                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11397                         return -EINVAL;
11398                 new_triggers.four_way_handshake = true;
11399                 regular = true;
11400         }
11401
11402         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11403                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11404                         return -EINVAL;
11405                 new_triggers.rfkill_release = true;
11406                 regular = true;
11407         }
11408
11409         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11410                 struct nlattr *pat;
11411                 int n_patterns = 0;
11412                 int rem, pat_len, mask_len, pkt_offset;
11413                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11414
11415                 regular = true;
11416
11417                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11418                                     rem)
11419                         n_patterns++;
11420                 if (n_patterns > wowlan->n_patterns)
11421                         return -EINVAL;
11422
11423                 new_triggers.patterns = kcalloc(n_patterns,
11424                                                 sizeof(new_triggers.patterns[0]),
11425                                                 GFP_KERNEL);
11426                 if (!new_triggers.patterns)
11427                         return -ENOMEM;
11428
11429                 new_triggers.n_patterns = n_patterns;
11430                 i = 0;
11431
11432                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11433                                     rem) {
11434                         u8 *mask_pat;
11435
11436                         err = nla_parse_nested_deprecated(pat_tb,
11437                                                           MAX_NL80211_PKTPAT,
11438                                                           pat,
11439                                                           nl80211_packet_pattern_policy,
11440                                                           info->extack);
11441                         if (err)
11442                                 goto error;
11443
11444                         err = -EINVAL;
11445                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11446                             !pat_tb[NL80211_PKTPAT_PATTERN])
11447                                 goto error;
11448                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11449                         mask_len = DIV_ROUND_UP(pat_len, 8);
11450                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11451                                 goto error;
11452                         if (pat_len > wowlan->pattern_max_len ||
11453                             pat_len < wowlan->pattern_min_len)
11454                                 goto error;
11455
11456                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11457                                 pkt_offset = 0;
11458                         else
11459                                 pkt_offset = nla_get_u32(
11460                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11461                         if (pkt_offset > wowlan->max_pkt_offset)
11462                                 goto error;
11463                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11464
11465                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11466                         if (!mask_pat) {
11467                                 err = -ENOMEM;
11468                                 goto error;
11469                         }
11470                         new_triggers.patterns[i].mask = mask_pat;
11471                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11472                                mask_len);
11473                         mask_pat += mask_len;
11474                         new_triggers.patterns[i].pattern = mask_pat;
11475                         new_triggers.patterns[i].pattern_len = pat_len;
11476                         memcpy(mask_pat,
11477                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11478                                pat_len);
11479                         i++;
11480                 }
11481         }
11482
11483         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11484                 regular = true;
11485                 err = nl80211_parse_wowlan_tcp(
11486                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11487                         &new_triggers);
11488                 if (err)
11489                         goto error;
11490         }
11491
11492         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11493                 regular = true;
11494                 err = nl80211_parse_wowlan_nd(
11495                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11496                         &new_triggers);
11497                 if (err)
11498                         goto error;
11499         }
11500
11501         /* The 'any' trigger means the device continues operating more or less
11502          * as in its normal operation mode and wakes up the host on most of the
11503          * normal interrupts (like packet RX, ...)
11504          * It therefore makes little sense to combine with the more constrained
11505          * wakeup trigger modes.
11506          */
11507         if (new_triggers.any && regular) {
11508                 err = -EINVAL;
11509                 goto error;
11510         }
11511
11512         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11513         if (!ntrig) {
11514                 err = -ENOMEM;
11515                 goto error;
11516         }
11517         cfg80211_rdev_free_wowlan(rdev);
11518         rdev->wiphy.wowlan_config = ntrig;
11519
11520  set_wakeup:
11521         if (rdev->ops->set_wakeup &&
11522             prev_enabled != !!rdev->wiphy.wowlan_config)
11523                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11524
11525         return 0;
11526  error:
11527         for (i = 0; i < new_triggers.n_patterns; i++)
11528                 kfree(new_triggers.patterns[i].mask);
11529         kfree(new_triggers.patterns);
11530         if (new_triggers.tcp && new_triggers.tcp->sock)
11531                 sock_release(new_triggers.tcp->sock);
11532         kfree(new_triggers.tcp);
11533         kfree(new_triggers.nd_config);
11534         return err;
11535 }
11536 #endif
11537
11538 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11539                                        struct cfg80211_registered_device *rdev)
11540 {
11541         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11542         int i, j, pat_len;
11543         struct cfg80211_coalesce_rules *rule;
11544
11545         if (!rdev->coalesce->n_rules)
11546                 return 0;
11547
11548         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11549         if (!nl_rules)
11550                 return -ENOBUFS;
11551
11552         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11553                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11554                 if (!nl_rule)
11555                         return -ENOBUFS;
11556
11557                 rule = &rdev->coalesce->rules[i];
11558                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11559                                 rule->delay))
11560                         return -ENOBUFS;
11561
11562                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11563                                 rule->condition))
11564                         return -ENOBUFS;
11565
11566                 nl_pats = nla_nest_start_noflag(msg,
11567                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11568                 if (!nl_pats)
11569                         return -ENOBUFS;
11570
11571                 for (j = 0; j < rule->n_patterns; j++) {
11572                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11573                         if (!nl_pat)
11574                                 return -ENOBUFS;
11575                         pat_len = rule->patterns[j].pattern_len;
11576                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11577                                     DIV_ROUND_UP(pat_len, 8),
11578                                     rule->patterns[j].mask) ||
11579                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11580                                     rule->patterns[j].pattern) ||
11581                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11582                                         rule->patterns[j].pkt_offset))
11583                                 return -ENOBUFS;
11584                         nla_nest_end(msg, nl_pat);
11585                 }
11586                 nla_nest_end(msg, nl_pats);
11587                 nla_nest_end(msg, nl_rule);
11588         }
11589         nla_nest_end(msg, nl_rules);
11590
11591         return 0;
11592 }
11593
11594 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11595 {
11596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11597         struct sk_buff *msg;
11598         void *hdr;
11599
11600         if (!rdev->wiphy.coalesce)
11601                 return -EOPNOTSUPP;
11602
11603         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11604         if (!msg)
11605                 return -ENOMEM;
11606
11607         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11608                              NL80211_CMD_GET_COALESCE);
11609         if (!hdr)
11610                 goto nla_put_failure;
11611
11612         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11613                 goto nla_put_failure;
11614
11615         genlmsg_end(msg, hdr);
11616         return genlmsg_reply(msg, info);
11617
11618 nla_put_failure:
11619         nlmsg_free(msg);
11620         return -ENOBUFS;
11621 }
11622
11623 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11624 {
11625         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11626         int i, j;
11627         struct cfg80211_coalesce_rules *rule;
11628
11629         if (!coalesce)
11630                 return;
11631
11632         for (i = 0; i < coalesce->n_rules; i++) {
11633                 rule = &coalesce->rules[i];
11634                 for (j = 0; j < rule->n_patterns; j++)
11635                         kfree(rule->patterns[j].mask);
11636                 kfree(rule->patterns);
11637         }
11638         kfree(coalesce->rules);
11639         kfree(coalesce);
11640         rdev->coalesce = NULL;
11641 }
11642
11643 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11644                                        struct nlattr *rule,
11645                                        struct cfg80211_coalesce_rules *new_rule)
11646 {
11647         int err, i;
11648         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11649         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11650         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11651         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11652
11653         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11654                                           rule, nl80211_coalesce_policy, NULL);
11655         if (err)
11656                 return err;
11657
11658         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11659                 new_rule->delay =
11660                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11661         if (new_rule->delay > coalesce->max_delay)
11662                 return -EINVAL;
11663
11664         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11665                 new_rule->condition =
11666                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11667
11668         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11669                 return -EINVAL;
11670
11671         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11672                             rem)
11673                 n_patterns++;
11674         if (n_patterns > coalesce->n_patterns)
11675                 return -EINVAL;
11676
11677         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11678                                      GFP_KERNEL);
11679         if (!new_rule->patterns)
11680                 return -ENOMEM;
11681
11682         new_rule->n_patterns = n_patterns;
11683         i = 0;
11684
11685         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11686                             rem) {
11687                 u8 *mask_pat;
11688
11689                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11690                                                   pat,
11691                                                   nl80211_packet_pattern_policy,
11692                                                   NULL);
11693                 if (err)
11694                         return err;
11695
11696                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11697                     !pat_tb[NL80211_PKTPAT_PATTERN])
11698                         return -EINVAL;
11699                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11700                 mask_len = DIV_ROUND_UP(pat_len, 8);
11701                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11702                         return -EINVAL;
11703                 if (pat_len > coalesce->pattern_max_len ||
11704                     pat_len < coalesce->pattern_min_len)
11705                         return -EINVAL;
11706
11707                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11708                         pkt_offset = 0;
11709                 else
11710                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11711                 if (pkt_offset > coalesce->max_pkt_offset)
11712                         return -EINVAL;
11713                 new_rule->patterns[i].pkt_offset = pkt_offset;
11714
11715                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11716                 if (!mask_pat)
11717                         return -ENOMEM;
11718
11719                 new_rule->patterns[i].mask = mask_pat;
11720                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11721                        mask_len);
11722
11723                 mask_pat += mask_len;
11724                 new_rule->patterns[i].pattern = mask_pat;
11725                 new_rule->patterns[i].pattern_len = pat_len;
11726                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11727                        pat_len);
11728                 i++;
11729         }
11730
11731         return 0;
11732 }
11733
11734 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11735 {
11736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11737         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11738         struct cfg80211_coalesce new_coalesce = {};
11739         struct cfg80211_coalesce *n_coalesce;
11740         int err, rem_rule, n_rules = 0, i, j;
11741         struct nlattr *rule;
11742         struct cfg80211_coalesce_rules *tmp_rule;
11743
11744         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11745                 return -EOPNOTSUPP;
11746
11747         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11748                 cfg80211_rdev_free_coalesce(rdev);
11749                 rdev_set_coalesce(rdev, NULL);
11750                 return 0;
11751         }
11752
11753         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11754                             rem_rule)
11755                 n_rules++;
11756         if (n_rules > coalesce->n_rules)
11757                 return -EINVAL;
11758
11759         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11760                                      GFP_KERNEL);
11761         if (!new_coalesce.rules)
11762                 return -ENOMEM;
11763
11764         new_coalesce.n_rules = n_rules;
11765         i = 0;
11766
11767         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11768                             rem_rule) {
11769                 err = nl80211_parse_coalesce_rule(rdev, rule,
11770                                                   &new_coalesce.rules[i]);
11771                 if (err)
11772                         goto error;
11773
11774                 i++;
11775         }
11776
11777         err = rdev_set_coalesce(rdev, &new_coalesce);
11778         if (err)
11779                 goto error;
11780
11781         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11782         if (!n_coalesce) {
11783                 err = -ENOMEM;
11784                 goto error;
11785         }
11786         cfg80211_rdev_free_coalesce(rdev);
11787         rdev->coalesce = n_coalesce;
11788
11789         return 0;
11790 error:
11791         for (i = 0; i < new_coalesce.n_rules; i++) {
11792                 tmp_rule = &new_coalesce.rules[i];
11793                 for (j = 0; j < tmp_rule->n_patterns; j++)
11794                         kfree(tmp_rule->patterns[j].mask);
11795                 kfree(tmp_rule->patterns);
11796         }
11797         kfree(new_coalesce.rules);
11798
11799         return err;
11800 }
11801
11802 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11803 {
11804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11805         struct net_device *dev = info->user_ptr[1];
11806         struct wireless_dev *wdev = dev->ieee80211_ptr;
11807         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11808         struct cfg80211_gtk_rekey_data rekey_data;
11809         int err;
11810
11811         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11812                 return -EINVAL;
11813
11814         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
11815                                           info->attrs[NL80211_ATTR_REKEY_DATA],
11816                                           nl80211_rekey_policy, info->extack);
11817         if (err)
11818                 return err;
11819
11820         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11821             !tb[NL80211_REKEY_DATA_KCK])
11822                 return -EINVAL;
11823         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11824                 return -ERANGE;
11825         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11826                 return -ERANGE;
11827         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11828                 return -ERANGE;
11829
11830         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11831         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11832         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11833
11834         wdev_lock(wdev);
11835         if (!wdev->current_bss) {
11836                 err = -ENOTCONN;
11837                 goto out;
11838         }
11839
11840         if (!rdev->ops->set_rekey_data) {
11841                 err = -EOPNOTSUPP;
11842                 goto out;
11843         }
11844
11845         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11846  out:
11847         wdev_unlock(wdev);
11848         return err;
11849 }
11850
11851 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11852                                              struct genl_info *info)
11853 {
11854         struct net_device *dev = info->user_ptr[1];
11855         struct wireless_dev *wdev = dev->ieee80211_ptr;
11856
11857         if (wdev->iftype != NL80211_IFTYPE_AP &&
11858             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11859                 return -EINVAL;
11860
11861         if (wdev->ap_unexpected_nlportid)
11862                 return -EBUSY;
11863
11864         wdev->ap_unexpected_nlportid = info->snd_portid;
11865         return 0;
11866 }
11867
11868 static int nl80211_probe_client(struct sk_buff *skb,
11869                                 struct genl_info *info)
11870 {
11871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11872         struct net_device *dev = info->user_ptr[1];
11873         struct wireless_dev *wdev = dev->ieee80211_ptr;
11874         struct sk_buff *msg;
11875         void *hdr;
11876         const u8 *addr;
11877         u64 cookie;
11878         int err;
11879
11880         if (wdev->iftype != NL80211_IFTYPE_AP &&
11881             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11882                 return -EOPNOTSUPP;
11883
11884         if (!info->attrs[NL80211_ATTR_MAC])
11885                 return -EINVAL;
11886
11887         if (!rdev->ops->probe_client)
11888                 return -EOPNOTSUPP;
11889
11890         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11891         if (!msg)
11892                 return -ENOMEM;
11893
11894         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11895                              NL80211_CMD_PROBE_CLIENT);
11896         if (!hdr) {
11897                 err = -ENOBUFS;
11898                 goto free_msg;
11899         }
11900
11901         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11902
11903         err = rdev_probe_client(rdev, dev, addr, &cookie);
11904         if (err)
11905                 goto free_msg;
11906
11907         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11908                               NL80211_ATTR_PAD))
11909                 goto nla_put_failure;
11910
11911         genlmsg_end(msg, hdr);
11912
11913         return genlmsg_reply(msg, info);
11914
11915  nla_put_failure:
11916         err = -ENOBUFS;
11917  free_msg:
11918         nlmsg_free(msg);
11919         return err;
11920 }
11921
11922 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11923 {
11924         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11925         struct cfg80211_beacon_registration *reg, *nreg;
11926         int rv;
11927
11928         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11929                 return -EOPNOTSUPP;
11930
11931         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11932         if (!nreg)
11933                 return -ENOMEM;
11934
11935         /* First, check if already registered. */
11936         spin_lock_bh(&rdev->beacon_registrations_lock);
11937         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11938                 if (reg->nlportid == info->snd_portid) {
11939                         rv = -EALREADY;
11940                         goto out_err;
11941                 }
11942         }
11943         /* Add it to the list */
11944         nreg->nlportid = info->snd_portid;
11945         list_add(&nreg->list, &rdev->beacon_registrations);
11946
11947         spin_unlock_bh(&rdev->beacon_registrations_lock);
11948
11949         return 0;
11950 out_err:
11951         spin_unlock_bh(&rdev->beacon_registrations_lock);
11952         kfree(nreg);
11953         return rv;
11954 }
11955
11956 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11957 {
11958         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11959         struct wireless_dev *wdev = info->user_ptr[1];
11960         int err;
11961
11962         if (!rdev->ops->start_p2p_device)
11963                 return -EOPNOTSUPP;
11964
11965         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11966                 return -EOPNOTSUPP;
11967
11968         if (wdev_running(wdev))
11969                 return 0;
11970
11971         if (rfkill_blocked(rdev->rfkill))
11972                 return -ERFKILL;
11973
11974         err = rdev_start_p2p_device(rdev, wdev);
11975         if (err)
11976                 return err;
11977
11978         wdev->is_running = true;
11979         rdev->opencount++;
11980
11981         return 0;
11982 }
11983
11984 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11985 {
11986         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11987         struct wireless_dev *wdev = info->user_ptr[1];
11988
11989         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11990                 return -EOPNOTSUPP;
11991
11992         if (!rdev->ops->stop_p2p_device)
11993                 return -EOPNOTSUPP;
11994
11995         cfg80211_stop_p2p_device(rdev, wdev);
11996
11997         return 0;
11998 }
11999
12000 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12001 {
12002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12003         struct wireless_dev *wdev = info->user_ptr[1];
12004         struct cfg80211_nan_conf conf = {};
12005         int err;
12006
12007         if (wdev->iftype != NL80211_IFTYPE_NAN)
12008                 return -EOPNOTSUPP;
12009
12010         if (wdev_running(wdev))
12011                 return -EEXIST;
12012
12013         if (rfkill_blocked(rdev->rfkill))
12014                 return -ERFKILL;
12015
12016         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12017                 return -EINVAL;
12018
12019         conf.master_pref =
12020                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12021
12022         if (info->attrs[NL80211_ATTR_BANDS]) {
12023                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12024
12025                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12026                         return -EOPNOTSUPP;
12027
12028                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12029                         return -EINVAL;
12030
12031                 conf.bands = bands;
12032         }
12033
12034         err = rdev_start_nan(rdev, wdev, &conf);
12035         if (err)
12036                 return err;
12037
12038         wdev->is_running = true;
12039         rdev->opencount++;
12040
12041         return 0;
12042 }
12043
12044 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12045 {
12046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12047         struct wireless_dev *wdev = info->user_ptr[1];
12048
12049         if (wdev->iftype != NL80211_IFTYPE_NAN)
12050                 return -EOPNOTSUPP;
12051
12052         cfg80211_stop_nan(rdev, wdev);
12053
12054         return 0;
12055 }
12056
12057 static int validate_nan_filter(struct nlattr *filter_attr)
12058 {
12059         struct nlattr *attr;
12060         int len = 0, n_entries = 0, rem;
12061
12062         nla_for_each_nested(attr, filter_attr, rem) {
12063                 len += nla_len(attr);
12064                 n_entries++;
12065         }
12066
12067         if (len >= U8_MAX)
12068                 return -EINVAL;
12069
12070         return n_entries;
12071 }
12072
12073 static int handle_nan_filter(struct nlattr *attr_filter,
12074                              struct cfg80211_nan_func *func,
12075                              bool tx)
12076 {
12077         struct nlattr *attr;
12078         int n_entries, rem, i;
12079         struct cfg80211_nan_func_filter *filter;
12080
12081         n_entries = validate_nan_filter(attr_filter);
12082         if (n_entries < 0)
12083                 return n_entries;
12084
12085         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12086
12087         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12088         if (!filter)
12089                 return -ENOMEM;
12090
12091         i = 0;
12092         nla_for_each_nested(attr, attr_filter, rem) {
12093                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12094                 filter[i].len = nla_len(attr);
12095                 i++;
12096         }
12097         if (tx) {
12098                 func->num_tx_filters = n_entries;
12099                 func->tx_filters = filter;
12100         } else {
12101                 func->num_rx_filters = n_entries;
12102                 func->rx_filters = filter;
12103         }
12104
12105         return 0;
12106 }
12107
12108 static int nl80211_nan_add_func(struct sk_buff *skb,
12109                                 struct genl_info *info)
12110 {
12111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12112         struct wireless_dev *wdev = info->user_ptr[1];
12113         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12114         struct cfg80211_nan_func *func;
12115         struct sk_buff *msg = NULL;
12116         void *hdr = NULL;
12117         int err = 0;
12118
12119         if (wdev->iftype != NL80211_IFTYPE_NAN)
12120                 return -EOPNOTSUPP;
12121
12122         if (!wdev_running(wdev))
12123                 return -ENOTCONN;
12124
12125         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12126                 return -EINVAL;
12127
12128         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12129                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12130                                           nl80211_nan_func_policy,
12131                                           info->extack);
12132         if (err)
12133                 return err;
12134
12135         func = kzalloc(sizeof(*func), GFP_KERNEL);
12136         if (!func)
12137                 return -ENOMEM;
12138
12139         func->cookie = cfg80211_assign_cookie(rdev);
12140
12141         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12142             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12143                 err = -EINVAL;
12144                 goto out;
12145         }
12146
12147
12148         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12149
12150         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12151                 err = -EINVAL;
12152                 goto out;
12153         }
12154
12155         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12156                sizeof(func->service_id));
12157
12158         func->close_range =
12159                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12160
12161         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12162                 func->serv_spec_info_len =
12163                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12164                 func->serv_spec_info =
12165                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12166                                 func->serv_spec_info_len,
12167                                 GFP_KERNEL);
12168                 if (!func->serv_spec_info) {
12169                         err = -ENOMEM;
12170                         goto out;
12171                 }
12172         }
12173
12174         if (tb[NL80211_NAN_FUNC_TTL])
12175                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12176
12177         switch (func->type) {
12178         case NL80211_NAN_FUNC_PUBLISH:
12179                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12180                         err = -EINVAL;
12181                         goto out;
12182                 }
12183
12184                 func->publish_type =
12185                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12186                 func->publish_bcast =
12187                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12188
12189                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12190                         func->publish_bcast) {
12191                         err = -EINVAL;
12192                         goto out;
12193                 }
12194                 break;
12195         case NL80211_NAN_FUNC_SUBSCRIBE:
12196                 func->subscribe_active =
12197                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12198                 break;
12199         case NL80211_NAN_FUNC_FOLLOW_UP:
12200                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12201                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12202                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12203                         err = -EINVAL;
12204                         goto out;
12205                 }
12206
12207                 func->followup_id =
12208                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12209                 func->followup_reqid =
12210                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12211                 memcpy(func->followup_dest.addr,
12212                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12213                        sizeof(func->followup_dest.addr));
12214                 if (func->ttl) {
12215                         err = -EINVAL;
12216                         goto out;
12217                 }
12218                 break;
12219         default:
12220                 err = -EINVAL;
12221                 goto out;
12222         }
12223
12224         if (tb[NL80211_NAN_FUNC_SRF]) {
12225                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12226
12227                 err = nla_parse_nested_deprecated(srf_tb,
12228                                                   NL80211_NAN_SRF_ATTR_MAX,
12229                                                   tb[NL80211_NAN_FUNC_SRF],
12230                                                   nl80211_nan_srf_policy,
12231                                                   info->extack);
12232                 if (err)
12233                         goto out;
12234
12235                 func->srf_include =
12236                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12237
12238                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12239                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12240                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12241                                 err = -EINVAL;
12242                                 goto out;
12243                         }
12244
12245                         func->srf_bf_len =
12246                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12247                         func->srf_bf =
12248                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12249                                         func->srf_bf_len, GFP_KERNEL);
12250                         if (!func->srf_bf) {
12251                                 err = -ENOMEM;
12252                                 goto out;
12253                         }
12254
12255                         func->srf_bf_idx =
12256                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12257                 } else {
12258                         struct nlattr *attr, *mac_attr =
12259                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12260                         int n_entries, rem, i = 0;
12261
12262                         if (!mac_attr) {
12263                                 err = -EINVAL;
12264                                 goto out;
12265                         }
12266
12267                         n_entries = validate_acl_mac_addrs(mac_attr);
12268                         if (n_entries <= 0) {
12269                                 err = -EINVAL;
12270                                 goto out;
12271                         }
12272
12273                         func->srf_num_macs = n_entries;
12274                         func->srf_macs =
12275                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12276                                         GFP_KERNEL);
12277                         if (!func->srf_macs) {
12278                                 err = -ENOMEM;
12279                                 goto out;
12280                         }
12281
12282                         nla_for_each_nested(attr, mac_attr, rem)
12283                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12284                                        sizeof(*func->srf_macs));
12285                 }
12286         }
12287
12288         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12289                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12290                                         func, true);
12291                 if (err)
12292                         goto out;
12293         }
12294
12295         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12296                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12297                                         func, false);
12298                 if (err)
12299                         goto out;
12300         }
12301
12302         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12303         if (!msg) {
12304                 err = -ENOMEM;
12305                 goto out;
12306         }
12307
12308         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12309                              NL80211_CMD_ADD_NAN_FUNCTION);
12310         /* This can't really happen - we just allocated 4KB */
12311         if (WARN_ON(!hdr)) {
12312                 err = -ENOMEM;
12313                 goto out;
12314         }
12315
12316         err = rdev_add_nan_func(rdev, wdev, func);
12317 out:
12318         if (err < 0) {
12319                 cfg80211_free_nan_func(func);
12320                 nlmsg_free(msg);
12321                 return err;
12322         }
12323
12324         /* propagate the instance id and cookie to userspace  */
12325         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12326                               NL80211_ATTR_PAD))
12327                 goto nla_put_failure;
12328
12329         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12330         if (!func_attr)
12331                 goto nla_put_failure;
12332
12333         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12334                        func->instance_id))
12335                 goto nla_put_failure;
12336
12337         nla_nest_end(msg, func_attr);
12338
12339         genlmsg_end(msg, hdr);
12340         return genlmsg_reply(msg, info);
12341
12342 nla_put_failure:
12343         nlmsg_free(msg);
12344         return -ENOBUFS;
12345 }
12346
12347 static int nl80211_nan_del_func(struct sk_buff *skb,
12348                                struct genl_info *info)
12349 {
12350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12351         struct wireless_dev *wdev = info->user_ptr[1];
12352         u64 cookie;
12353
12354         if (wdev->iftype != NL80211_IFTYPE_NAN)
12355                 return -EOPNOTSUPP;
12356
12357         if (!wdev_running(wdev))
12358                 return -ENOTCONN;
12359
12360         if (!info->attrs[NL80211_ATTR_COOKIE])
12361                 return -EINVAL;
12362
12363         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12364
12365         rdev_del_nan_func(rdev, wdev, cookie);
12366
12367         return 0;
12368 }
12369
12370 static int nl80211_nan_change_config(struct sk_buff *skb,
12371                                      struct genl_info *info)
12372 {
12373         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12374         struct wireless_dev *wdev = info->user_ptr[1];
12375         struct cfg80211_nan_conf conf = {};
12376         u32 changed = 0;
12377
12378         if (wdev->iftype != NL80211_IFTYPE_NAN)
12379                 return -EOPNOTSUPP;
12380
12381         if (!wdev_running(wdev))
12382                 return -ENOTCONN;
12383
12384         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12385                 conf.master_pref =
12386                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12387                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12388                         return -EINVAL;
12389
12390                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12391         }
12392
12393         if (info->attrs[NL80211_ATTR_BANDS]) {
12394                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12395
12396                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12397                         return -EOPNOTSUPP;
12398
12399                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12400                         return -EINVAL;
12401
12402                 conf.bands = bands;
12403                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12404         }
12405
12406         if (!changed)
12407                 return -EINVAL;
12408
12409         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12410 }
12411
12412 void cfg80211_nan_match(struct wireless_dev *wdev,
12413                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12414 {
12415         struct wiphy *wiphy = wdev->wiphy;
12416         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12417         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12418         struct sk_buff *msg;
12419         void *hdr;
12420
12421         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12422                 return;
12423
12424         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12425         if (!msg)
12426                 return;
12427
12428         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12429         if (!hdr) {
12430                 nlmsg_free(msg);
12431                 return;
12432         }
12433
12434         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12435             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12436                                          wdev->netdev->ifindex)) ||
12437             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12438                               NL80211_ATTR_PAD))
12439                 goto nla_put_failure;
12440
12441         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12442                               NL80211_ATTR_PAD) ||
12443             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12444                 goto nla_put_failure;
12445
12446         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12447         if (!match_attr)
12448                 goto nla_put_failure;
12449
12450         local_func_attr = nla_nest_start_noflag(msg,
12451                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12452         if (!local_func_attr)
12453                 goto nla_put_failure;
12454
12455         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12456                 goto nla_put_failure;
12457
12458         nla_nest_end(msg, local_func_attr);
12459
12460         peer_func_attr = nla_nest_start_noflag(msg,
12461                                                NL80211_NAN_MATCH_FUNC_PEER);
12462         if (!peer_func_attr)
12463                 goto nla_put_failure;
12464
12465         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12466             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12467                 goto nla_put_failure;
12468
12469         if (match->info && match->info_len &&
12470             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12471                     match->info))
12472                 goto nla_put_failure;
12473
12474         nla_nest_end(msg, peer_func_attr);
12475         nla_nest_end(msg, match_attr);
12476         genlmsg_end(msg, hdr);
12477
12478         if (!wdev->owner_nlportid)
12479                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12480                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12481         else
12482                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12483                                 wdev->owner_nlportid);
12484
12485         return;
12486
12487 nla_put_failure:
12488         nlmsg_free(msg);
12489 }
12490 EXPORT_SYMBOL(cfg80211_nan_match);
12491
12492 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12493                                   u8 inst_id,
12494                                   enum nl80211_nan_func_term_reason reason,
12495                                   u64 cookie, gfp_t gfp)
12496 {
12497         struct wiphy *wiphy = wdev->wiphy;
12498         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12499         struct sk_buff *msg;
12500         struct nlattr *func_attr;
12501         void *hdr;
12502
12503         if (WARN_ON(!inst_id))
12504                 return;
12505
12506         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12507         if (!msg)
12508                 return;
12509
12510         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12511         if (!hdr) {
12512                 nlmsg_free(msg);
12513                 return;
12514         }
12515
12516         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12517             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12518                                          wdev->netdev->ifindex)) ||
12519             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12520                               NL80211_ATTR_PAD))
12521                 goto nla_put_failure;
12522
12523         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12524                               NL80211_ATTR_PAD))
12525                 goto nla_put_failure;
12526
12527         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12528         if (!func_attr)
12529                 goto nla_put_failure;
12530
12531         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12532             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12533                 goto nla_put_failure;
12534
12535         nla_nest_end(msg, func_attr);
12536         genlmsg_end(msg, hdr);
12537
12538         if (!wdev->owner_nlportid)
12539                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12540                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12541         else
12542                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12543                                 wdev->owner_nlportid);
12544
12545         return;
12546
12547 nla_put_failure:
12548         nlmsg_free(msg);
12549 }
12550 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12551
12552 static int nl80211_get_protocol_features(struct sk_buff *skb,
12553                                          struct genl_info *info)
12554 {
12555         void *hdr;
12556         struct sk_buff *msg;
12557
12558         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12559         if (!msg)
12560                 return -ENOMEM;
12561
12562         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12563                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12564         if (!hdr)
12565                 goto nla_put_failure;
12566
12567         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12568                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12569                 goto nla_put_failure;
12570
12571         genlmsg_end(msg, hdr);
12572         return genlmsg_reply(msg, info);
12573
12574  nla_put_failure:
12575         kfree_skb(msg);
12576         return -ENOBUFS;
12577 }
12578
12579 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12580 {
12581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12582         struct cfg80211_update_ft_ies_params ft_params;
12583         struct net_device *dev = info->user_ptr[1];
12584
12585         if (!rdev->ops->update_ft_ies)
12586                 return -EOPNOTSUPP;
12587
12588         if (!info->attrs[NL80211_ATTR_MDID] ||
12589             !info->attrs[NL80211_ATTR_IE])
12590                 return -EINVAL;
12591
12592         memset(&ft_params, 0, sizeof(ft_params));
12593         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12594         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12595         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12596
12597         return rdev_update_ft_ies(rdev, dev, &ft_params);
12598 }
12599
12600 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12601                                        struct genl_info *info)
12602 {
12603         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12604         struct wireless_dev *wdev = info->user_ptr[1];
12605         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12606         u16 duration;
12607         int ret;
12608
12609         if (!rdev->ops->crit_proto_start)
12610                 return -EOPNOTSUPP;
12611
12612         if (WARN_ON(!rdev->ops->crit_proto_stop))
12613                 return -EINVAL;
12614
12615         if (rdev->crit_proto_nlportid)
12616                 return -EBUSY;
12617
12618         /* determine protocol if provided */
12619         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12620                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12621
12622         if (proto >= NUM_NL80211_CRIT_PROTO)
12623                 return -EINVAL;
12624
12625         /* timeout must be provided */
12626         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12627                 return -EINVAL;
12628
12629         duration =
12630                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12631
12632         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12633                 return -ERANGE;
12634
12635         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12636         if (!ret)
12637                 rdev->crit_proto_nlportid = info->snd_portid;
12638
12639         return ret;
12640 }
12641
12642 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12643                                       struct genl_info *info)
12644 {
12645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12646         struct wireless_dev *wdev = info->user_ptr[1];
12647
12648         if (!rdev->ops->crit_proto_stop)
12649                 return -EOPNOTSUPP;
12650
12651         if (rdev->crit_proto_nlportid) {
12652                 rdev->crit_proto_nlportid = 0;
12653                 rdev_crit_proto_stop(rdev, wdev);
12654         }
12655         return 0;
12656 }
12657
12658 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12659 {
12660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12661         struct wireless_dev *wdev =
12662                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12663         int i, err;
12664         u32 vid, subcmd;
12665
12666         if (!rdev->wiphy.vendor_commands)
12667                 return -EOPNOTSUPP;
12668
12669         if (IS_ERR(wdev)) {
12670                 err = PTR_ERR(wdev);
12671                 if (err != -EINVAL)
12672                         return err;
12673                 wdev = NULL;
12674         } else if (wdev->wiphy != &rdev->wiphy) {
12675                 return -EINVAL;
12676         }
12677
12678         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12679             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12680                 return -EINVAL;
12681
12682         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12683         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12684         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12685                 const struct wiphy_vendor_command *vcmd;
12686                 void *data = NULL;
12687                 int len = 0;
12688
12689                 vcmd = &rdev->wiphy.vendor_commands[i];
12690
12691                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12692                         continue;
12693
12694                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12695                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12696                         if (!wdev)
12697                                 return -EINVAL;
12698                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12699                             !wdev->netdev)
12700                                 return -EINVAL;
12701
12702                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12703                                 if (!wdev_running(wdev))
12704                                         return -ENETDOWN;
12705                         }
12706
12707                         if (!vcmd->doit)
12708                                 return -EOPNOTSUPP;
12709                 } else {
12710                         wdev = NULL;
12711                 }
12712
12713                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12714                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12715                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12716                 }
12717
12718                 rdev->cur_cmd_info = info;
12719                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12720                                                           data, len);
12721                 rdev->cur_cmd_info = NULL;
12722                 return err;
12723         }
12724
12725         return -EOPNOTSUPP;
12726 }
12727
12728 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12729                                        struct netlink_callback *cb,
12730                                        struct cfg80211_registered_device **rdev,
12731                                        struct wireless_dev **wdev)
12732 {
12733         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12734         u32 vid, subcmd;
12735         unsigned int i;
12736         int vcmd_idx = -1;
12737         int err;
12738         void *data = NULL;
12739         unsigned int data_len = 0;
12740
12741         if (cb->args[0]) {
12742                 /* subtract the 1 again here */
12743                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12744                 struct wireless_dev *tmp;
12745
12746                 if (!wiphy)
12747                         return -ENODEV;
12748                 *rdev = wiphy_to_rdev(wiphy);
12749                 *wdev = NULL;
12750
12751                 if (cb->args[1]) {
12752                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12753                                 if (tmp->identifier == cb->args[1] - 1) {
12754                                         *wdev = tmp;
12755                                         break;
12756                                 }
12757                         }
12758                 }
12759
12760                 /* keep rtnl locked in successful case */
12761                 return 0;
12762         }
12763
12764         err = nlmsg_parse_deprecated(cb->nlh,
12765                                      GENL_HDRLEN + nl80211_fam.hdrsize,
12766                                      attrbuf, nl80211_fam.maxattr,
12767                                      nl80211_policy, NULL);
12768         if (err)
12769                 return err;
12770
12771         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12772             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12773                 return -EINVAL;
12774
12775         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12776         if (IS_ERR(*wdev))
12777                 *wdev = NULL;
12778
12779         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12780         if (IS_ERR(*rdev))
12781                 return PTR_ERR(*rdev);
12782
12783         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12784         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12785
12786         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12787                 const struct wiphy_vendor_command *vcmd;
12788
12789                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12790
12791                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12792                         continue;
12793
12794                 if (!vcmd->dumpit)
12795                         return -EOPNOTSUPP;
12796
12797                 vcmd_idx = i;
12798                 break;
12799         }
12800
12801         if (vcmd_idx < 0)
12802                 return -EOPNOTSUPP;
12803
12804         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12805                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12806                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12807         }
12808
12809         /* 0 is the first index - add 1 to parse only once */
12810         cb->args[0] = (*rdev)->wiphy_idx + 1;
12811         /* add 1 to know if it was NULL */
12812         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12813         cb->args[2] = vcmd_idx;
12814         cb->args[3] = (unsigned long)data;
12815         cb->args[4] = data_len;
12816
12817         /* keep rtnl locked in successful case */
12818         return 0;
12819 }
12820
12821 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12822                                    struct netlink_callback *cb)
12823 {
12824         struct cfg80211_registered_device *rdev;
12825         struct wireless_dev *wdev;
12826         unsigned int vcmd_idx;
12827         const struct wiphy_vendor_command *vcmd;
12828         void *data;
12829         int data_len;
12830         int err;
12831         struct nlattr *vendor_data;
12832
12833         rtnl_lock();
12834         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12835         if (err)
12836                 goto out;
12837
12838         vcmd_idx = cb->args[2];
12839         data = (void *)cb->args[3];
12840         data_len = cb->args[4];
12841         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12842
12843         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12844                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12845                 if (!wdev) {
12846                         err = -EINVAL;
12847                         goto out;
12848                 }
12849                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12850                     !wdev->netdev) {
12851                         err = -EINVAL;
12852                         goto out;
12853                 }
12854
12855                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12856                         if (!wdev_running(wdev)) {
12857                                 err = -ENETDOWN;
12858                                 goto out;
12859                         }
12860                 }
12861         }
12862
12863         while (1) {
12864                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12865                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
12866                                            NL80211_CMD_VENDOR);
12867                 if (!hdr)
12868                         break;
12869
12870                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12871                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12872                                                wdev_id(wdev),
12873                                                NL80211_ATTR_PAD))) {
12874                         genlmsg_cancel(skb, hdr);
12875                         break;
12876                 }
12877
12878                 vendor_data = nla_nest_start_noflag(skb,
12879                                                     NL80211_ATTR_VENDOR_DATA);
12880                 if (!vendor_data) {
12881                         genlmsg_cancel(skb, hdr);
12882                         break;
12883                 }
12884
12885                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12886                                    (unsigned long *)&cb->args[5]);
12887                 nla_nest_end(skb, vendor_data);
12888
12889                 if (err == -ENOBUFS || err == -ENOENT) {
12890                         genlmsg_cancel(skb, hdr);
12891                         break;
12892                 } else if (err) {
12893                         genlmsg_cancel(skb, hdr);
12894                         goto out;
12895                 }
12896
12897                 genlmsg_end(skb, hdr);
12898         }
12899
12900         err = skb->len;
12901  out:
12902         rtnl_unlock();
12903         return err;
12904 }
12905
12906 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12907                                            enum nl80211_commands cmd,
12908                                            enum nl80211_attrs attr,
12909                                            int approxlen)
12910 {
12911         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12912
12913         if (WARN_ON(!rdev->cur_cmd_info))
12914                 return NULL;
12915
12916         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12917                                            rdev->cur_cmd_info->snd_portid,
12918                                            rdev->cur_cmd_info->snd_seq,
12919                                            cmd, attr, NULL, GFP_KERNEL);
12920 }
12921 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12922
12923 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12924 {
12925         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12926         void *hdr = ((void **)skb->cb)[1];
12927         struct nlattr *data = ((void **)skb->cb)[2];
12928
12929         /* clear CB data for netlink core to own from now on */
12930         memset(skb->cb, 0, sizeof(skb->cb));
12931
12932         if (WARN_ON(!rdev->cur_cmd_info)) {
12933                 kfree_skb(skb);
12934                 return -EINVAL;
12935         }
12936
12937         nla_nest_end(skb, data);
12938         genlmsg_end(skb, hdr);
12939         return genlmsg_reply(skb, rdev->cur_cmd_info);
12940 }
12941 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12942
12943 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
12944 {
12945         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12946
12947         if (WARN_ON(!rdev->cur_cmd_info))
12948                 return 0;
12949
12950         return rdev->cur_cmd_info->snd_portid;
12951 }
12952 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
12953
12954 static int nl80211_set_qos_map(struct sk_buff *skb,
12955                                struct genl_info *info)
12956 {
12957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12958         struct cfg80211_qos_map *qos_map = NULL;
12959         struct net_device *dev = info->user_ptr[1];
12960         u8 *pos, len, num_des, des_len, des;
12961         int ret;
12962
12963         if (!rdev->ops->set_qos_map)
12964                 return -EOPNOTSUPP;
12965
12966         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12967                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12968                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12969
12970                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12971                     len > IEEE80211_QOS_MAP_LEN_MAX)
12972                         return -EINVAL;
12973
12974                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12975                 if (!qos_map)
12976                         return -ENOMEM;
12977
12978                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12979                 if (num_des) {
12980                         des_len = num_des *
12981                                 sizeof(struct cfg80211_dscp_exception);
12982                         memcpy(qos_map->dscp_exception, pos, des_len);
12983                         qos_map->num_des = num_des;
12984                         for (des = 0; des < num_des; des++) {
12985                                 if (qos_map->dscp_exception[des].up > 7) {
12986                                         kfree(qos_map);
12987                                         return -EINVAL;
12988                                 }
12989                         }
12990                         pos += des_len;
12991                 }
12992                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12993         }
12994
12995         wdev_lock(dev->ieee80211_ptr);
12996         ret = nl80211_key_allowed(dev->ieee80211_ptr);
12997         if (!ret)
12998                 ret = rdev_set_qos_map(rdev, dev, qos_map);
12999         wdev_unlock(dev->ieee80211_ptr);
13000
13001         kfree(qos_map);
13002         return ret;
13003 }
13004
13005 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13006 {
13007         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13008         struct net_device *dev = info->user_ptr[1];
13009         struct wireless_dev *wdev = dev->ieee80211_ptr;
13010         const u8 *peer;
13011         u8 tsid, up;
13012         u16 admitted_time = 0;
13013         int err;
13014
13015         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13016                 return -EOPNOTSUPP;
13017
13018         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13019             !info->attrs[NL80211_ATTR_USER_PRIO])
13020                 return -EINVAL;
13021
13022         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13023         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13024
13025         /* WMM uses TIDs 0-7 even for TSPEC */
13026         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13027                 /* TODO: handle 802.11 TSPEC/admission control
13028                  * need more attributes for that (e.g. BA session requirement);
13029                  * change the WMM adminssion test above to allow both then
13030                  */
13031                 return -EINVAL;
13032         }
13033
13034         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13035
13036         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13037                 admitted_time =
13038                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13039                 if (!admitted_time)
13040                         return -EINVAL;
13041         }
13042
13043         wdev_lock(wdev);
13044         switch (wdev->iftype) {
13045         case NL80211_IFTYPE_STATION:
13046         case NL80211_IFTYPE_P2P_CLIENT:
13047                 if (wdev->current_bss)
13048                         break;
13049                 err = -ENOTCONN;
13050                 goto out;
13051         default:
13052                 err = -EOPNOTSUPP;
13053                 goto out;
13054         }
13055
13056         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13057
13058  out:
13059         wdev_unlock(wdev);
13060         return err;
13061 }
13062
13063 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13064 {
13065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13066         struct net_device *dev = info->user_ptr[1];
13067         struct wireless_dev *wdev = dev->ieee80211_ptr;
13068         const u8 *peer;
13069         u8 tsid;
13070         int err;
13071
13072         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13073                 return -EINVAL;
13074
13075         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13076         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13077
13078         wdev_lock(wdev);
13079         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13080         wdev_unlock(wdev);
13081
13082         return err;
13083 }
13084
13085 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13086                                        struct genl_info *info)
13087 {
13088         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13089         struct net_device *dev = info->user_ptr[1];
13090         struct wireless_dev *wdev = dev->ieee80211_ptr;
13091         struct cfg80211_chan_def chandef = {};
13092         const u8 *addr;
13093         u8 oper_class;
13094         int err;
13095
13096         if (!rdev->ops->tdls_channel_switch ||
13097             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13098                 return -EOPNOTSUPP;
13099
13100         switch (dev->ieee80211_ptr->iftype) {
13101         case NL80211_IFTYPE_STATION:
13102         case NL80211_IFTYPE_P2P_CLIENT:
13103                 break;
13104         default:
13105                 return -EOPNOTSUPP;
13106         }
13107
13108         if (!info->attrs[NL80211_ATTR_MAC] ||
13109             !info->attrs[NL80211_ATTR_OPER_CLASS])
13110                 return -EINVAL;
13111
13112         err = nl80211_parse_chandef(rdev, info, &chandef);
13113         if (err)
13114                 return err;
13115
13116         /*
13117          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13118          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13119          * specification is not defined for them.
13120          */
13121         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13122             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13123             chandef.width != NL80211_CHAN_WIDTH_20)
13124                 return -EINVAL;
13125
13126         /* we will be active on the TDLS link */
13127         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13128                                            wdev->iftype))
13129                 return -EINVAL;
13130
13131         /* don't allow switching to DFS channels */
13132         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13133                 return -EINVAL;
13134
13135         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13136         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13137
13138         wdev_lock(wdev);
13139         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13140         wdev_unlock(wdev);
13141
13142         return err;
13143 }
13144
13145 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13146                                               struct genl_info *info)
13147 {
13148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13149         struct net_device *dev = info->user_ptr[1];
13150         struct wireless_dev *wdev = dev->ieee80211_ptr;
13151         const u8 *addr;
13152
13153         if (!rdev->ops->tdls_channel_switch ||
13154             !rdev->ops->tdls_cancel_channel_switch ||
13155             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13156                 return -EOPNOTSUPP;
13157
13158         switch (dev->ieee80211_ptr->iftype) {
13159         case NL80211_IFTYPE_STATION:
13160         case NL80211_IFTYPE_P2P_CLIENT:
13161                 break;
13162         default:
13163                 return -EOPNOTSUPP;
13164         }
13165
13166         if (!info->attrs[NL80211_ATTR_MAC])
13167                 return -EINVAL;
13168
13169         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13170
13171         wdev_lock(wdev);
13172         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13173         wdev_unlock(wdev);
13174
13175         return 0;
13176 }
13177
13178 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13179                                             struct genl_info *info)
13180 {
13181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13182         struct net_device *dev = info->user_ptr[1];
13183         struct wireless_dev *wdev = dev->ieee80211_ptr;
13184         const struct nlattr *nla;
13185         bool enabled;
13186
13187         if (!rdev->ops->set_multicast_to_unicast)
13188                 return -EOPNOTSUPP;
13189
13190         if (wdev->iftype != NL80211_IFTYPE_AP &&
13191             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13192                 return -EOPNOTSUPP;
13193
13194         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13195         enabled = nla_get_flag(nla);
13196
13197         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13198 }
13199
13200 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13201 {
13202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13203         struct net_device *dev = info->user_ptr[1];
13204         struct wireless_dev *wdev = dev->ieee80211_ptr;
13205         struct cfg80211_pmk_conf pmk_conf = {};
13206         int ret;
13207
13208         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13209             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13210                 return -EOPNOTSUPP;
13211
13212         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13213                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13214                 return -EOPNOTSUPP;
13215
13216         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13217                 return -EINVAL;
13218
13219         wdev_lock(wdev);
13220         if (!wdev->current_bss) {
13221                 ret = -ENOTCONN;
13222                 goto out;
13223         }
13224
13225         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13226         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13227                 ret = -EINVAL;
13228                 goto out;
13229         }
13230
13231         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13232         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13233         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13234             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13235                 ret = -EINVAL;
13236                 goto out;
13237         }
13238
13239         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13240                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13241
13242                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13243                         ret = -EINVAL;
13244                         goto out;
13245                 }
13246
13247                 pmk_conf.pmk_r0_name =
13248                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13249         }
13250
13251         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13252 out:
13253         wdev_unlock(wdev);
13254         return ret;
13255 }
13256
13257 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13258 {
13259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13260         struct net_device *dev = info->user_ptr[1];
13261         struct wireless_dev *wdev = dev->ieee80211_ptr;
13262         const u8 *aa;
13263         int ret;
13264
13265         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13266             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13267                 return -EOPNOTSUPP;
13268
13269         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13270                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13271                 return -EOPNOTSUPP;
13272
13273         if (!info->attrs[NL80211_ATTR_MAC])
13274                 return -EINVAL;
13275
13276         wdev_lock(wdev);
13277         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13278         ret = rdev_del_pmk(rdev, dev, aa);
13279         wdev_unlock(wdev);
13280
13281         return ret;
13282 }
13283
13284 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13285 {
13286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13287         struct net_device *dev = info->user_ptr[1];
13288         struct cfg80211_external_auth_params params;
13289
13290         if (!rdev->ops->external_auth)
13291                 return -EOPNOTSUPP;
13292
13293         if (!info->attrs[NL80211_ATTR_SSID] &&
13294             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13295             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13296                 return -EINVAL;
13297
13298         if (!info->attrs[NL80211_ATTR_BSSID])
13299                 return -EINVAL;
13300
13301         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13302                 return -EINVAL;
13303
13304         memset(&params, 0, sizeof(params));
13305
13306         if (info->attrs[NL80211_ATTR_SSID]) {
13307                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13308                 if (params.ssid.ssid_len == 0 ||
13309                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13310                         return -EINVAL;
13311                 memcpy(params.ssid.ssid,
13312                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13313                        params.ssid.ssid_len);
13314         }
13315
13316         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13317                ETH_ALEN);
13318
13319         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13320
13321         if (info->attrs[NL80211_ATTR_PMKID])
13322                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13323
13324         return rdev_external_auth(rdev, dev, &params);
13325 }
13326
13327 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13328 {
13329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13330         struct net_device *dev = info->user_ptr[1];
13331         struct wireless_dev *wdev = dev->ieee80211_ptr;
13332         const u8 *buf;
13333         size_t len;
13334         u8 *dest;
13335         u16 proto;
13336         bool noencrypt;
13337         int err;
13338
13339         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13340                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13341                 return -EOPNOTSUPP;
13342
13343         if (!rdev->ops->tx_control_port)
13344                 return -EOPNOTSUPP;
13345
13346         if (!info->attrs[NL80211_ATTR_FRAME] ||
13347             !info->attrs[NL80211_ATTR_MAC] ||
13348             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13349                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13350                 return -EINVAL;
13351         }
13352
13353         wdev_lock(wdev);
13354
13355         switch (wdev->iftype) {
13356         case NL80211_IFTYPE_AP:
13357         case NL80211_IFTYPE_P2P_GO:
13358         case NL80211_IFTYPE_MESH_POINT:
13359                 break;
13360         case NL80211_IFTYPE_ADHOC:
13361         case NL80211_IFTYPE_STATION:
13362         case NL80211_IFTYPE_P2P_CLIENT:
13363                 if (wdev->current_bss)
13364                         break;
13365                 err = -ENOTCONN;
13366                 goto out;
13367         default:
13368                 err = -EOPNOTSUPP;
13369                 goto out;
13370         }
13371
13372         wdev_unlock(wdev);
13373
13374         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13375         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13376         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13377         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13378         noencrypt =
13379                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13380
13381         return rdev_tx_control_port(rdev, dev, buf, len,
13382                                     dest, cpu_to_be16(proto), noencrypt);
13383
13384  out:
13385         wdev_unlock(wdev);
13386         return err;
13387 }
13388
13389 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13390                                            struct genl_info *info)
13391 {
13392         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13393         struct net_device *dev = info->user_ptr[1];
13394         struct wireless_dev *wdev = dev->ieee80211_ptr;
13395         struct cfg80211_ftm_responder_stats ftm_stats = {};
13396         struct sk_buff *msg;
13397         void *hdr;
13398         struct nlattr *ftm_stats_attr;
13399         int err;
13400
13401         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13402                 return -EOPNOTSUPP;
13403
13404         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13405         if (err)
13406                 return err;
13407
13408         if (!ftm_stats.filled)
13409                 return -ENODATA;
13410
13411         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13412         if (!msg)
13413                 return -ENOMEM;
13414
13415         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13416                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13417         if (!hdr)
13418                 return -ENOBUFS;
13419
13420         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13421                 goto nla_put_failure;
13422
13423         ftm_stats_attr = nla_nest_start_noflag(msg,
13424                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13425         if (!ftm_stats_attr)
13426                 goto nla_put_failure;
13427
13428 #define SET_FTM(field, name, type)                                       \
13429         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13430             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13431                              ftm_stats.field))                           \
13432                 goto nla_put_failure; } while (0)
13433 #define SET_FTM_U64(field, name)                                         \
13434         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13435             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13436                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13437                 goto nla_put_failure; } while (0)
13438
13439         SET_FTM(success_num, SUCCESS_NUM, u32);
13440         SET_FTM(partial_num, PARTIAL_NUM, u32);
13441         SET_FTM(failed_num, FAILED_NUM, u32);
13442         SET_FTM(asap_num, ASAP_NUM, u32);
13443         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13444         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13445         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13446         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13447         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13448 #undef SET_FTM
13449
13450         nla_nest_end(msg, ftm_stats_attr);
13451
13452         genlmsg_end(msg, hdr);
13453         return genlmsg_reply(msg, info);
13454
13455 nla_put_failure:
13456         nlmsg_free(msg);
13457         return -ENOBUFS;
13458 }
13459
13460 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13461 {
13462         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13463         struct cfg80211_update_owe_info owe_info;
13464         struct net_device *dev = info->user_ptr[1];
13465
13466         if (!rdev->ops->update_owe_info)
13467                 return -EOPNOTSUPP;
13468
13469         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13470             !info->attrs[NL80211_ATTR_MAC])
13471                 return -EINVAL;
13472
13473         memset(&owe_info, 0, sizeof(owe_info));
13474         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13475         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13476
13477         if (info->attrs[NL80211_ATTR_IE]) {
13478                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13479                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13480         }
13481
13482         return rdev_update_owe_info(rdev, dev, &owe_info);
13483 }
13484
13485 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13486 {
13487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13488         struct net_device *dev = info->user_ptr[1];
13489         struct wireless_dev *wdev = dev->ieee80211_ptr;
13490         struct station_info sinfo = {};
13491         const u8 *buf;
13492         size_t len;
13493         u8 *dest;
13494         int err;
13495
13496         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13497                 return -EOPNOTSUPP;
13498
13499         if (!info->attrs[NL80211_ATTR_MAC] ||
13500             !info->attrs[NL80211_ATTR_FRAME]) {
13501                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13502                 return -EINVAL;
13503         }
13504
13505         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13506                 return -EOPNOTSUPP;
13507
13508         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13509         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13510         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13511
13512         if (len < sizeof(struct ethhdr))
13513                 return -EINVAL;
13514
13515         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13516             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13517                 return -EINVAL;
13518
13519         err = rdev_get_station(rdev, dev, dest, &sinfo);
13520         if (err)
13521                 return err;
13522
13523         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13524 }
13525
13526 #define NL80211_FLAG_NEED_WIPHY         0x01
13527 #define NL80211_FLAG_NEED_NETDEV        0x02
13528 #define NL80211_FLAG_NEED_RTNL          0x04
13529 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13530 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13531                                          NL80211_FLAG_CHECK_NETDEV_UP)
13532 #define NL80211_FLAG_NEED_WDEV          0x10
13533 /* If a netdev is associated, it must be UP, P2P must be started */
13534 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13535                                          NL80211_FLAG_CHECK_NETDEV_UP)
13536 #define NL80211_FLAG_CLEAR_SKB          0x20
13537
13538 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13539                             struct genl_info *info)
13540 {
13541         struct cfg80211_registered_device *rdev;
13542         struct wireless_dev *wdev;
13543         struct net_device *dev;
13544         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13545
13546         if (rtnl)
13547                 rtnl_lock();
13548
13549         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13550                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13551                 if (IS_ERR(rdev)) {
13552                         if (rtnl)
13553                                 rtnl_unlock();
13554                         return PTR_ERR(rdev);
13555                 }
13556                 info->user_ptr[0] = rdev;
13557         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13558                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13559                 ASSERT_RTNL();
13560
13561                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13562                                                   info->attrs);
13563                 if (IS_ERR(wdev)) {
13564                         if (rtnl)
13565                                 rtnl_unlock();
13566                         return PTR_ERR(wdev);
13567                 }
13568
13569                 dev = wdev->netdev;
13570                 rdev = wiphy_to_rdev(wdev->wiphy);
13571
13572                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13573                         if (!dev) {
13574                                 if (rtnl)
13575                                         rtnl_unlock();
13576                                 return -EINVAL;
13577                         }
13578
13579                         info->user_ptr[1] = dev;
13580                 } else {
13581                         info->user_ptr[1] = wdev;
13582                 }
13583
13584                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13585                     !wdev_running(wdev)) {
13586                         if (rtnl)
13587                                 rtnl_unlock();
13588                         return -ENETDOWN;
13589                 }
13590
13591                 if (dev)
13592                         dev_hold(dev);
13593
13594                 info->user_ptr[0] = rdev;
13595         }
13596
13597         return 0;
13598 }
13599
13600 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13601                               struct genl_info *info)
13602 {
13603         if (info->user_ptr[1]) {
13604                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13605                         struct wireless_dev *wdev = info->user_ptr[1];
13606
13607                         if (wdev->netdev)
13608                                 dev_put(wdev->netdev);
13609                 } else {
13610                         dev_put(info->user_ptr[1]);
13611                 }
13612         }
13613
13614         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13615                 rtnl_unlock();
13616
13617         /* If needed, clear the netlink message payload from the SKB
13618          * as it might contain key data that shouldn't stick around on
13619          * the heap after the SKB is freed. The netlink message header
13620          * is still needed for further processing, so leave it intact.
13621          */
13622         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13623                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13624
13625                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13626         }
13627 }
13628
13629 static const struct genl_ops nl80211_ops[] = {
13630         {
13631                 .cmd = NL80211_CMD_GET_WIPHY,
13632                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13633                 .doit = nl80211_get_wiphy,
13634                 .dumpit = nl80211_dump_wiphy,
13635                 .done = nl80211_dump_wiphy_done,
13636                 /* can be retrieved by unprivileged users */
13637                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13638                                   NL80211_FLAG_NEED_RTNL,
13639         },
13640         {
13641                 .cmd = NL80211_CMD_SET_WIPHY,
13642                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13643                 .doit = nl80211_set_wiphy,
13644                 .flags = GENL_UNS_ADMIN_PERM,
13645                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13646         },
13647         {
13648                 .cmd = NL80211_CMD_GET_INTERFACE,
13649                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13650                 .doit = nl80211_get_interface,
13651                 .dumpit = nl80211_dump_interface,
13652                 /* can be retrieved by unprivileged users */
13653                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13654                                   NL80211_FLAG_NEED_RTNL,
13655         },
13656         {
13657                 .cmd = NL80211_CMD_SET_INTERFACE,
13658                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13659                 .doit = nl80211_set_interface,
13660                 .flags = GENL_UNS_ADMIN_PERM,
13661                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13662                                   NL80211_FLAG_NEED_RTNL,
13663         },
13664         {
13665                 .cmd = NL80211_CMD_NEW_INTERFACE,
13666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13667                 .doit = nl80211_new_interface,
13668                 .flags = GENL_UNS_ADMIN_PERM,
13669                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13670                                   NL80211_FLAG_NEED_RTNL,
13671         },
13672         {
13673                 .cmd = NL80211_CMD_DEL_INTERFACE,
13674                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13675                 .doit = nl80211_del_interface,
13676                 .flags = GENL_UNS_ADMIN_PERM,
13677                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13678                                   NL80211_FLAG_NEED_RTNL,
13679         },
13680         {
13681                 .cmd = NL80211_CMD_GET_KEY,
13682                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13683                 .doit = nl80211_get_key,
13684                 .flags = GENL_UNS_ADMIN_PERM,
13685                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13686                                   NL80211_FLAG_NEED_RTNL,
13687         },
13688         {
13689                 .cmd = NL80211_CMD_SET_KEY,
13690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13691                 .doit = nl80211_set_key,
13692                 .flags = GENL_UNS_ADMIN_PERM,
13693                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13694                                   NL80211_FLAG_NEED_RTNL |
13695                                   NL80211_FLAG_CLEAR_SKB,
13696         },
13697         {
13698                 .cmd = NL80211_CMD_NEW_KEY,
13699                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13700                 .doit = nl80211_new_key,
13701                 .flags = GENL_UNS_ADMIN_PERM,
13702                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13703                                   NL80211_FLAG_NEED_RTNL |
13704                                   NL80211_FLAG_CLEAR_SKB,
13705         },
13706         {
13707                 .cmd = NL80211_CMD_DEL_KEY,
13708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13709                 .doit = nl80211_del_key,
13710                 .flags = GENL_UNS_ADMIN_PERM,
13711                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13712                                   NL80211_FLAG_NEED_RTNL,
13713         },
13714         {
13715                 .cmd = NL80211_CMD_SET_BEACON,
13716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13717                 .flags = GENL_UNS_ADMIN_PERM,
13718                 .doit = nl80211_set_beacon,
13719                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13720                                   NL80211_FLAG_NEED_RTNL,
13721         },
13722         {
13723                 .cmd = NL80211_CMD_START_AP,
13724                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13725                 .flags = GENL_UNS_ADMIN_PERM,
13726                 .doit = nl80211_start_ap,
13727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13728                                   NL80211_FLAG_NEED_RTNL,
13729         },
13730         {
13731                 .cmd = NL80211_CMD_STOP_AP,
13732                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13733                 .flags = GENL_UNS_ADMIN_PERM,
13734                 .doit = nl80211_stop_ap,
13735                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13736                                   NL80211_FLAG_NEED_RTNL,
13737         },
13738         {
13739                 .cmd = NL80211_CMD_GET_STATION,
13740                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13741                 .doit = nl80211_get_station,
13742                 .dumpit = nl80211_dump_station,
13743                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13744                                   NL80211_FLAG_NEED_RTNL,
13745         },
13746         {
13747                 .cmd = NL80211_CMD_SET_STATION,
13748                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13749                 .doit = nl80211_set_station,
13750                 .flags = GENL_UNS_ADMIN_PERM,
13751                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13752                                   NL80211_FLAG_NEED_RTNL,
13753         },
13754         {
13755                 .cmd = NL80211_CMD_NEW_STATION,
13756                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13757                 .doit = nl80211_new_station,
13758                 .flags = GENL_UNS_ADMIN_PERM,
13759                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13760                                   NL80211_FLAG_NEED_RTNL,
13761         },
13762         {
13763                 .cmd = NL80211_CMD_DEL_STATION,
13764                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13765                 .doit = nl80211_del_station,
13766                 .flags = GENL_UNS_ADMIN_PERM,
13767                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13768                                   NL80211_FLAG_NEED_RTNL,
13769         },
13770         {
13771                 .cmd = NL80211_CMD_GET_MPATH,
13772                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13773                 .doit = nl80211_get_mpath,
13774                 .dumpit = nl80211_dump_mpath,
13775                 .flags = GENL_UNS_ADMIN_PERM,
13776                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13777                                   NL80211_FLAG_NEED_RTNL,
13778         },
13779         {
13780                 .cmd = NL80211_CMD_GET_MPP,
13781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13782                 .doit = nl80211_get_mpp,
13783                 .dumpit = nl80211_dump_mpp,
13784                 .flags = GENL_UNS_ADMIN_PERM,
13785                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13786                                   NL80211_FLAG_NEED_RTNL,
13787         },
13788         {
13789                 .cmd = NL80211_CMD_SET_MPATH,
13790                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13791                 .doit = nl80211_set_mpath,
13792                 .flags = GENL_UNS_ADMIN_PERM,
13793                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13794                                   NL80211_FLAG_NEED_RTNL,
13795         },
13796         {
13797                 .cmd = NL80211_CMD_NEW_MPATH,
13798                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13799                 .doit = nl80211_new_mpath,
13800                 .flags = GENL_UNS_ADMIN_PERM,
13801                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13802                                   NL80211_FLAG_NEED_RTNL,
13803         },
13804         {
13805                 .cmd = NL80211_CMD_DEL_MPATH,
13806                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13807                 .doit = nl80211_del_mpath,
13808                 .flags = GENL_UNS_ADMIN_PERM,
13809                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13810                                   NL80211_FLAG_NEED_RTNL,
13811         },
13812         {
13813                 .cmd = NL80211_CMD_SET_BSS,
13814                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13815                 .doit = nl80211_set_bss,
13816                 .flags = GENL_UNS_ADMIN_PERM,
13817                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13818                                   NL80211_FLAG_NEED_RTNL,
13819         },
13820         {
13821                 .cmd = NL80211_CMD_GET_REG,
13822                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13823                 .doit = nl80211_get_reg_do,
13824                 .dumpit = nl80211_get_reg_dump,
13825                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13826                 /* can be retrieved by unprivileged users */
13827         },
13828 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13829         {
13830                 .cmd = NL80211_CMD_SET_REG,
13831                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13832                 .doit = nl80211_set_reg,
13833                 .flags = GENL_ADMIN_PERM,
13834                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13835         },
13836 #endif
13837         {
13838                 .cmd = NL80211_CMD_REQ_SET_REG,
13839                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13840                 .doit = nl80211_req_set_reg,
13841                 .flags = GENL_ADMIN_PERM,
13842         },
13843         {
13844                 .cmd = NL80211_CMD_RELOAD_REGDB,
13845                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13846                 .doit = nl80211_reload_regdb,
13847                 .flags = GENL_ADMIN_PERM,
13848         },
13849         {
13850                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13851                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13852                 .doit = nl80211_get_mesh_config,
13853                 /* can be retrieved by unprivileged users */
13854                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13855                                   NL80211_FLAG_NEED_RTNL,
13856         },
13857         {
13858                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13859                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13860                 .doit = nl80211_update_mesh_config,
13861                 .flags = GENL_UNS_ADMIN_PERM,
13862                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13863                                   NL80211_FLAG_NEED_RTNL,
13864         },
13865         {
13866                 .cmd = NL80211_CMD_TRIGGER_SCAN,
13867                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13868                 .doit = nl80211_trigger_scan,
13869                 .flags = GENL_UNS_ADMIN_PERM,
13870                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13871                                   NL80211_FLAG_NEED_RTNL,
13872         },
13873         {
13874                 .cmd = NL80211_CMD_ABORT_SCAN,
13875                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13876                 .doit = nl80211_abort_scan,
13877                 .flags = GENL_UNS_ADMIN_PERM,
13878                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13879                                   NL80211_FLAG_NEED_RTNL,
13880         },
13881         {
13882                 .cmd = NL80211_CMD_GET_SCAN,
13883                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13884                 .dumpit = nl80211_dump_scan,
13885         },
13886         {
13887                 .cmd = NL80211_CMD_START_SCHED_SCAN,
13888                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13889                 .doit = nl80211_start_sched_scan,
13890                 .flags = GENL_UNS_ADMIN_PERM,
13891                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13892                                   NL80211_FLAG_NEED_RTNL,
13893         },
13894         {
13895                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13896                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13897                 .doit = nl80211_stop_sched_scan,
13898                 .flags = GENL_UNS_ADMIN_PERM,
13899                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13900                                   NL80211_FLAG_NEED_RTNL,
13901         },
13902         {
13903                 .cmd = NL80211_CMD_AUTHENTICATE,
13904                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13905                 .doit = nl80211_authenticate,
13906                 .flags = GENL_UNS_ADMIN_PERM,
13907                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13908                                   NL80211_FLAG_NEED_RTNL |
13909                                   NL80211_FLAG_CLEAR_SKB,
13910         },
13911         {
13912                 .cmd = NL80211_CMD_ASSOCIATE,
13913                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13914                 .doit = nl80211_associate,
13915                 .flags = GENL_UNS_ADMIN_PERM,
13916                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13917                                   NL80211_FLAG_NEED_RTNL |
13918                                   NL80211_FLAG_CLEAR_SKB,
13919         },
13920         {
13921                 .cmd = NL80211_CMD_DEAUTHENTICATE,
13922                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13923                 .doit = nl80211_deauthenticate,
13924                 .flags = GENL_UNS_ADMIN_PERM,
13925                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13926                                   NL80211_FLAG_NEED_RTNL,
13927         },
13928         {
13929                 .cmd = NL80211_CMD_DISASSOCIATE,
13930                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13931                 .doit = nl80211_disassociate,
13932                 .flags = GENL_UNS_ADMIN_PERM,
13933                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13934                                   NL80211_FLAG_NEED_RTNL,
13935         },
13936         {
13937                 .cmd = NL80211_CMD_JOIN_IBSS,
13938                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13939                 .doit = nl80211_join_ibss,
13940                 .flags = GENL_UNS_ADMIN_PERM,
13941                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13942                                   NL80211_FLAG_NEED_RTNL,
13943         },
13944         {
13945                 .cmd = NL80211_CMD_LEAVE_IBSS,
13946                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13947                 .doit = nl80211_leave_ibss,
13948                 .flags = GENL_UNS_ADMIN_PERM,
13949                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13950                                   NL80211_FLAG_NEED_RTNL,
13951         },
13952 #ifdef CONFIG_NL80211_TESTMODE
13953         {
13954                 .cmd = NL80211_CMD_TESTMODE,
13955                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13956                 .doit = nl80211_testmode_do,
13957                 .dumpit = nl80211_testmode_dump,
13958                 .flags = GENL_UNS_ADMIN_PERM,
13959                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13960                                   NL80211_FLAG_NEED_RTNL,
13961         },
13962 #endif
13963         {
13964                 .cmd = NL80211_CMD_CONNECT,
13965                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13966                 .doit = nl80211_connect,
13967                 .flags = GENL_UNS_ADMIN_PERM,
13968                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13969                                   NL80211_FLAG_NEED_RTNL |
13970                                   NL80211_FLAG_CLEAR_SKB,
13971         },
13972         {
13973                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13974                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13975                 .doit = nl80211_update_connect_params,
13976                 .flags = GENL_ADMIN_PERM,
13977                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13978                                   NL80211_FLAG_NEED_RTNL |
13979                                   NL80211_FLAG_CLEAR_SKB,
13980         },
13981         {
13982                 .cmd = NL80211_CMD_DISCONNECT,
13983                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13984                 .doit = nl80211_disconnect,
13985                 .flags = GENL_UNS_ADMIN_PERM,
13986                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13987                                   NL80211_FLAG_NEED_RTNL,
13988         },
13989         {
13990                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13992                 .doit = nl80211_wiphy_netns,
13993                 .flags = GENL_UNS_ADMIN_PERM,
13994                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13995                                   NL80211_FLAG_NEED_RTNL,
13996         },
13997         {
13998                 .cmd = NL80211_CMD_GET_SURVEY,
13999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14000                 .dumpit = nl80211_dump_survey,
14001         },
14002         {
14003                 .cmd = NL80211_CMD_SET_PMKSA,
14004                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14005                 .doit = nl80211_setdel_pmksa,
14006                 .flags = GENL_UNS_ADMIN_PERM,
14007                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14008                                   NL80211_FLAG_NEED_RTNL |
14009                                   NL80211_FLAG_CLEAR_SKB,
14010         },
14011         {
14012                 .cmd = NL80211_CMD_DEL_PMKSA,
14013                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14014                 .doit = nl80211_setdel_pmksa,
14015                 .flags = GENL_UNS_ADMIN_PERM,
14016                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14017                                   NL80211_FLAG_NEED_RTNL,
14018         },
14019         {
14020                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14021                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14022                 .doit = nl80211_flush_pmksa,
14023                 .flags = GENL_UNS_ADMIN_PERM,
14024                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14025                                   NL80211_FLAG_NEED_RTNL,
14026         },
14027         {
14028                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14030                 .doit = nl80211_remain_on_channel,
14031                 .flags = GENL_UNS_ADMIN_PERM,
14032                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14033                                   NL80211_FLAG_NEED_RTNL,
14034         },
14035         {
14036                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14037                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14038                 .doit = nl80211_cancel_remain_on_channel,
14039                 .flags = GENL_UNS_ADMIN_PERM,
14040                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14041                                   NL80211_FLAG_NEED_RTNL,
14042         },
14043         {
14044                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14046                 .doit = nl80211_set_tx_bitrate_mask,
14047                 .flags = GENL_UNS_ADMIN_PERM,
14048                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14049                                   NL80211_FLAG_NEED_RTNL,
14050         },
14051         {
14052                 .cmd = NL80211_CMD_REGISTER_FRAME,
14053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14054                 .doit = nl80211_register_mgmt,
14055                 .flags = GENL_UNS_ADMIN_PERM,
14056                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14057                                   NL80211_FLAG_NEED_RTNL,
14058         },
14059         {
14060                 .cmd = NL80211_CMD_FRAME,
14061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14062                 .doit = nl80211_tx_mgmt,
14063                 .flags = GENL_UNS_ADMIN_PERM,
14064                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14065                                   NL80211_FLAG_NEED_RTNL,
14066         },
14067         {
14068                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14070                 .doit = nl80211_tx_mgmt_cancel_wait,
14071                 .flags = GENL_UNS_ADMIN_PERM,
14072                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14073                                   NL80211_FLAG_NEED_RTNL,
14074         },
14075         {
14076                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14077                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14078                 .doit = nl80211_set_power_save,
14079                 .flags = GENL_UNS_ADMIN_PERM,
14080                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14081                                   NL80211_FLAG_NEED_RTNL,
14082         },
14083         {
14084                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14086                 .doit = nl80211_get_power_save,
14087                 /* can be retrieved by unprivileged users */
14088                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14089                                   NL80211_FLAG_NEED_RTNL,
14090         },
14091         {
14092                 .cmd = NL80211_CMD_SET_CQM,
14093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14094                 .doit = nl80211_set_cqm,
14095                 .flags = GENL_UNS_ADMIN_PERM,
14096                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14097                                   NL80211_FLAG_NEED_RTNL,
14098         },
14099         {
14100                 .cmd = NL80211_CMD_SET_CHANNEL,
14101                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14102                 .doit = nl80211_set_channel,
14103                 .flags = GENL_UNS_ADMIN_PERM,
14104                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14105                                   NL80211_FLAG_NEED_RTNL,
14106         },
14107         {
14108                 .cmd = NL80211_CMD_SET_WDS_PEER,
14109                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14110                 .doit = nl80211_set_wds_peer,
14111                 .flags = GENL_UNS_ADMIN_PERM,
14112                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14113                                   NL80211_FLAG_NEED_RTNL,
14114         },
14115         {
14116                 .cmd = NL80211_CMD_JOIN_MESH,
14117                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14118                 .doit = nl80211_join_mesh,
14119                 .flags = GENL_UNS_ADMIN_PERM,
14120                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14121                                   NL80211_FLAG_NEED_RTNL,
14122         },
14123         {
14124                 .cmd = NL80211_CMD_LEAVE_MESH,
14125                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14126                 .doit = nl80211_leave_mesh,
14127                 .flags = GENL_UNS_ADMIN_PERM,
14128                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14129                                   NL80211_FLAG_NEED_RTNL,
14130         },
14131         {
14132                 .cmd = NL80211_CMD_JOIN_OCB,
14133                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14134                 .doit = nl80211_join_ocb,
14135                 .flags = GENL_UNS_ADMIN_PERM,
14136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14137                                   NL80211_FLAG_NEED_RTNL,
14138         },
14139         {
14140                 .cmd = NL80211_CMD_LEAVE_OCB,
14141                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14142                 .doit = nl80211_leave_ocb,
14143                 .flags = GENL_UNS_ADMIN_PERM,
14144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14145                                   NL80211_FLAG_NEED_RTNL,
14146         },
14147 #ifdef CONFIG_PM
14148         {
14149                 .cmd = NL80211_CMD_GET_WOWLAN,
14150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14151                 .doit = nl80211_get_wowlan,
14152                 /* can be retrieved by unprivileged users */
14153                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14154                                   NL80211_FLAG_NEED_RTNL,
14155         },
14156         {
14157                 .cmd = NL80211_CMD_SET_WOWLAN,
14158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14159                 .doit = nl80211_set_wowlan,
14160                 .flags = GENL_UNS_ADMIN_PERM,
14161                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14162                                   NL80211_FLAG_NEED_RTNL,
14163         },
14164 #endif
14165         {
14166                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14167                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14168                 .doit = nl80211_set_rekey_data,
14169                 .flags = GENL_UNS_ADMIN_PERM,
14170                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14171                                   NL80211_FLAG_NEED_RTNL |
14172                                   NL80211_FLAG_CLEAR_SKB,
14173         },
14174         {
14175                 .cmd = NL80211_CMD_TDLS_MGMT,
14176                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14177                 .doit = nl80211_tdls_mgmt,
14178                 .flags = GENL_UNS_ADMIN_PERM,
14179                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14180                                   NL80211_FLAG_NEED_RTNL,
14181         },
14182         {
14183                 .cmd = NL80211_CMD_TDLS_OPER,
14184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14185                 .doit = nl80211_tdls_oper,
14186                 .flags = GENL_UNS_ADMIN_PERM,
14187                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14188                                   NL80211_FLAG_NEED_RTNL,
14189         },
14190         {
14191                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14192                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14193                 .doit = nl80211_register_unexpected_frame,
14194                 .flags = GENL_UNS_ADMIN_PERM,
14195                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14196                                   NL80211_FLAG_NEED_RTNL,
14197         },
14198         {
14199                 .cmd = NL80211_CMD_PROBE_CLIENT,
14200                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14201                 .doit = nl80211_probe_client,
14202                 .flags = GENL_UNS_ADMIN_PERM,
14203                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14204                                   NL80211_FLAG_NEED_RTNL,
14205         },
14206         {
14207                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14208                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14209                 .doit = nl80211_register_beacons,
14210                 .flags = GENL_UNS_ADMIN_PERM,
14211                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14212                                   NL80211_FLAG_NEED_RTNL,
14213         },
14214         {
14215                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14216                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14217                 .doit = nl80211_set_noack_map,
14218                 .flags = GENL_UNS_ADMIN_PERM,
14219                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14220                                   NL80211_FLAG_NEED_RTNL,
14221         },
14222         {
14223                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14224                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14225                 .doit = nl80211_start_p2p_device,
14226                 .flags = GENL_UNS_ADMIN_PERM,
14227                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14228                                   NL80211_FLAG_NEED_RTNL,
14229         },
14230         {
14231                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14232                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14233                 .doit = nl80211_stop_p2p_device,
14234                 .flags = GENL_UNS_ADMIN_PERM,
14235                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14236                                   NL80211_FLAG_NEED_RTNL,
14237         },
14238         {
14239                 .cmd = NL80211_CMD_START_NAN,
14240                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14241                 .doit = nl80211_start_nan,
14242                 .flags = GENL_ADMIN_PERM,
14243                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14244                                   NL80211_FLAG_NEED_RTNL,
14245         },
14246         {
14247                 .cmd = NL80211_CMD_STOP_NAN,
14248                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14249                 .doit = nl80211_stop_nan,
14250                 .flags = GENL_ADMIN_PERM,
14251                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14252                                   NL80211_FLAG_NEED_RTNL,
14253         },
14254         {
14255                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14256                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14257                 .doit = nl80211_nan_add_func,
14258                 .flags = GENL_ADMIN_PERM,
14259                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14260                                   NL80211_FLAG_NEED_RTNL,
14261         },
14262         {
14263                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14264                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14265                 .doit = nl80211_nan_del_func,
14266                 .flags = GENL_ADMIN_PERM,
14267                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14268                                   NL80211_FLAG_NEED_RTNL,
14269         },
14270         {
14271                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14272                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14273                 .doit = nl80211_nan_change_config,
14274                 .flags = GENL_ADMIN_PERM,
14275                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14276                                   NL80211_FLAG_NEED_RTNL,
14277         },
14278         {
14279                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14281                 .doit = nl80211_set_mcast_rate,
14282                 .flags = GENL_UNS_ADMIN_PERM,
14283                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14284                                   NL80211_FLAG_NEED_RTNL,
14285         },
14286         {
14287                 .cmd = NL80211_CMD_SET_MAC_ACL,
14288                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14289                 .doit = nl80211_set_mac_acl,
14290                 .flags = GENL_UNS_ADMIN_PERM,
14291                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14292                                   NL80211_FLAG_NEED_RTNL,
14293         },
14294         {
14295                 .cmd = NL80211_CMD_RADAR_DETECT,
14296                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14297                 .doit = nl80211_start_radar_detection,
14298                 .flags = GENL_UNS_ADMIN_PERM,
14299                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14300                                   NL80211_FLAG_NEED_RTNL,
14301         },
14302         {
14303                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14304                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14305                 .doit = nl80211_get_protocol_features,
14306         },
14307         {
14308                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14309                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14310                 .doit = nl80211_update_ft_ies,
14311                 .flags = GENL_UNS_ADMIN_PERM,
14312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14313                                   NL80211_FLAG_NEED_RTNL,
14314         },
14315         {
14316                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14317                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14318                 .doit = nl80211_crit_protocol_start,
14319                 .flags = GENL_UNS_ADMIN_PERM,
14320                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14321                                   NL80211_FLAG_NEED_RTNL,
14322         },
14323         {
14324                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14325                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14326                 .doit = nl80211_crit_protocol_stop,
14327                 .flags = GENL_UNS_ADMIN_PERM,
14328                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14329                                   NL80211_FLAG_NEED_RTNL,
14330         },
14331         {
14332                 .cmd = NL80211_CMD_GET_COALESCE,
14333                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14334                 .doit = nl80211_get_coalesce,
14335                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14336                                   NL80211_FLAG_NEED_RTNL,
14337         },
14338         {
14339                 .cmd = NL80211_CMD_SET_COALESCE,
14340                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14341                 .doit = nl80211_set_coalesce,
14342                 .flags = GENL_UNS_ADMIN_PERM,
14343                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14344                                   NL80211_FLAG_NEED_RTNL,
14345         },
14346         {
14347                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14348                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14349                 .doit = nl80211_channel_switch,
14350                 .flags = GENL_UNS_ADMIN_PERM,
14351                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14352                                   NL80211_FLAG_NEED_RTNL,
14353         },
14354         {
14355                 .cmd = NL80211_CMD_VENDOR,
14356                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14357                 .doit = nl80211_vendor_cmd,
14358                 .dumpit = nl80211_vendor_cmd_dump,
14359                 .flags = GENL_UNS_ADMIN_PERM,
14360                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14361                                   NL80211_FLAG_NEED_RTNL |
14362                                   NL80211_FLAG_CLEAR_SKB,
14363         },
14364         {
14365                 .cmd = NL80211_CMD_SET_QOS_MAP,
14366                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14367                 .doit = nl80211_set_qos_map,
14368                 .flags = GENL_UNS_ADMIN_PERM,
14369                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14370                                   NL80211_FLAG_NEED_RTNL,
14371         },
14372         {
14373                 .cmd = NL80211_CMD_ADD_TX_TS,
14374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14375                 .doit = nl80211_add_tx_ts,
14376                 .flags = GENL_UNS_ADMIN_PERM,
14377                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14378                                   NL80211_FLAG_NEED_RTNL,
14379         },
14380         {
14381                 .cmd = NL80211_CMD_DEL_TX_TS,
14382                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14383                 .doit = nl80211_del_tx_ts,
14384                 .flags = GENL_UNS_ADMIN_PERM,
14385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14386                                   NL80211_FLAG_NEED_RTNL,
14387         },
14388         {
14389                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14390                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14391                 .doit = nl80211_tdls_channel_switch,
14392                 .flags = GENL_UNS_ADMIN_PERM,
14393                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14394                                   NL80211_FLAG_NEED_RTNL,
14395         },
14396         {
14397                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14398                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14399                 .doit = nl80211_tdls_cancel_channel_switch,
14400                 .flags = GENL_UNS_ADMIN_PERM,
14401                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14402                                   NL80211_FLAG_NEED_RTNL,
14403         },
14404         {
14405                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14407                 .doit = nl80211_set_multicast_to_unicast,
14408                 .flags = GENL_UNS_ADMIN_PERM,
14409                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14410                                   NL80211_FLAG_NEED_RTNL,
14411         },
14412         {
14413                 .cmd = NL80211_CMD_SET_PMK,
14414                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14415                 .doit = nl80211_set_pmk,
14416                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14417                                   NL80211_FLAG_NEED_RTNL |
14418                                   NL80211_FLAG_CLEAR_SKB,
14419         },
14420         {
14421                 .cmd = NL80211_CMD_DEL_PMK,
14422                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14423                 .doit = nl80211_del_pmk,
14424                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14425                                   NL80211_FLAG_NEED_RTNL,
14426         },
14427         {
14428                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14429                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14430                 .doit = nl80211_external_auth,
14431                 .flags = GENL_ADMIN_PERM,
14432                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14433                                   NL80211_FLAG_NEED_RTNL,
14434         },
14435         {
14436                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14437                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14438                 .doit = nl80211_tx_control_port,
14439                 .flags = GENL_UNS_ADMIN_PERM,
14440                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14441                                   NL80211_FLAG_NEED_RTNL,
14442         },
14443         {
14444                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14445                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14446                 .doit = nl80211_get_ftm_responder_stats,
14447                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14448                                   NL80211_FLAG_NEED_RTNL,
14449         },
14450         {
14451                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14452                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14453                 .doit = nl80211_pmsr_start,
14454                 .flags = GENL_UNS_ADMIN_PERM,
14455                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14456                                   NL80211_FLAG_NEED_RTNL,
14457         },
14458         {
14459                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14460                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14461                 .doit = nl80211_notify_radar_detection,
14462                 .flags = GENL_UNS_ADMIN_PERM,
14463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14464                                   NL80211_FLAG_NEED_RTNL,
14465         },
14466         {
14467                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14468                 .doit = nl80211_update_owe_info,
14469                 .flags = GENL_ADMIN_PERM,
14470                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14471                                   NL80211_FLAG_NEED_RTNL,
14472         },
14473         {
14474                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14475                 .doit = nl80211_probe_mesh_link,
14476                 .flags = GENL_UNS_ADMIN_PERM,
14477                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14478                                   NL80211_FLAG_NEED_RTNL,
14479         },
14480 };
14481
14482 static struct genl_family nl80211_fam __ro_after_init = {
14483         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14484         .hdrsize = 0,                   /* no private header */
14485         .version = 1,                   /* no particular meaning now */
14486         .maxattr = NL80211_ATTR_MAX,
14487         .policy = nl80211_policy,
14488         .netnsok = true,
14489         .pre_doit = nl80211_pre_doit,
14490         .post_doit = nl80211_post_doit,
14491         .module = THIS_MODULE,
14492         .ops = nl80211_ops,
14493         .n_ops = ARRAY_SIZE(nl80211_ops),
14494         .mcgrps = nl80211_mcgrps,
14495         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14496 };
14497
14498 /* notification functions */
14499
14500 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14501                           enum nl80211_commands cmd)
14502 {
14503         struct sk_buff *msg;
14504         struct nl80211_dump_wiphy_state state = {};
14505
14506         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14507                 cmd != NL80211_CMD_DEL_WIPHY);
14508
14509         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14510         if (!msg)
14511                 return;
14512
14513         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14514                 nlmsg_free(msg);
14515                 return;
14516         }
14517
14518         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14519                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14520 }
14521
14522 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14523                                 struct wireless_dev *wdev,
14524                                 enum nl80211_commands cmd)
14525 {
14526         struct sk_buff *msg;
14527
14528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14529         if (!msg)
14530                 return;
14531
14532         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14533                 nlmsg_free(msg);
14534                 return;
14535         }
14536
14537         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14538                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14539 }
14540
14541 static int nl80211_add_scan_req(struct sk_buff *msg,
14542                                 struct cfg80211_registered_device *rdev)
14543 {
14544         struct cfg80211_scan_request *req = rdev->scan_req;
14545         struct nlattr *nest;
14546         int i;
14547
14548         if (WARN_ON(!req))
14549                 return 0;
14550
14551         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14552         if (!nest)
14553                 goto nla_put_failure;
14554         for (i = 0; i < req->n_ssids; i++) {
14555                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14556                         goto nla_put_failure;
14557         }
14558         nla_nest_end(msg, nest);
14559
14560         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14561         if (!nest)
14562                 goto nla_put_failure;
14563         for (i = 0; i < req->n_channels; i++) {
14564                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14565                         goto nla_put_failure;
14566         }
14567         nla_nest_end(msg, nest);
14568
14569         if (req->ie &&
14570             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14571                 goto nla_put_failure;
14572
14573         if (req->flags &&
14574             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14575                 goto nla_put_failure;
14576
14577         if (req->info.scan_start_tsf &&
14578             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14579                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14580              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14581                      req->info.tsf_bssid)))
14582                 goto nla_put_failure;
14583
14584         return 0;
14585  nla_put_failure:
14586         return -ENOBUFS;
14587 }
14588
14589 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14590                                  struct cfg80211_registered_device *rdev,
14591                                  struct wireless_dev *wdev,
14592                                  u32 portid, u32 seq, int flags,
14593                                  u32 cmd)
14594 {
14595         void *hdr;
14596
14597         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14598         if (!hdr)
14599                 return -1;
14600
14601         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14602             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14603                                          wdev->netdev->ifindex)) ||
14604             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14605                               NL80211_ATTR_PAD))
14606                 goto nla_put_failure;
14607
14608         /* ignore errors and send incomplete event anyway */
14609         nl80211_add_scan_req(msg, rdev);
14610
14611         genlmsg_end(msg, hdr);
14612         return 0;
14613
14614  nla_put_failure:
14615         genlmsg_cancel(msg, hdr);
14616         return -EMSGSIZE;
14617 }
14618
14619 static int
14620 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14621                             struct cfg80211_sched_scan_request *req, u32 cmd)
14622 {
14623         void *hdr;
14624
14625         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14626         if (!hdr)
14627                 return -1;
14628
14629         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14630                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14631             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14632             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14633                               NL80211_ATTR_PAD))
14634                 goto nla_put_failure;
14635
14636         genlmsg_end(msg, hdr);
14637         return 0;
14638
14639  nla_put_failure:
14640         genlmsg_cancel(msg, hdr);
14641         return -EMSGSIZE;
14642 }
14643
14644 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14645                              struct wireless_dev *wdev)
14646 {
14647         struct sk_buff *msg;
14648
14649         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14650         if (!msg)
14651                 return;
14652
14653         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14654                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14655                 nlmsg_free(msg);
14656                 return;
14657         }
14658
14659         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14660                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14661 }
14662
14663 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14664                                        struct wireless_dev *wdev, bool aborted)
14665 {
14666         struct sk_buff *msg;
14667
14668         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14669         if (!msg)
14670                 return NULL;
14671
14672         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14673                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14674                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14675                 nlmsg_free(msg);
14676                 return NULL;
14677         }
14678
14679         return msg;
14680 }
14681
14682 /* send message created by nl80211_build_scan_msg() */
14683 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14684                            struct sk_buff *msg)
14685 {
14686         if (!msg)
14687                 return;
14688
14689         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14690                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14691 }
14692
14693 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14694 {
14695         struct sk_buff *msg;
14696
14697         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14698         if (!msg)
14699                 return;
14700
14701         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14702                 nlmsg_free(msg);
14703                 return;
14704         }
14705
14706         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14707                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14708 }
14709
14710 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14711                                           struct regulatory_request *request)
14712 {
14713         /* Userspace can always count this one always being set */
14714         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14715                 goto nla_put_failure;
14716
14717         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14718                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14719                                NL80211_REGDOM_TYPE_WORLD))
14720                         goto nla_put_failure;
14721         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14722                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14723                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14724                         goto nla_put_failure;
14725         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14726                    request->intersect) {
14727                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14728                                NL80211_REGDOM_TYPE_INTERSECTION))
14729                         goto nla_put_failure;
14730         } else {
14731                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14732                                NL80211_REGDOM_TYPE_COUNTRY) ||
14733                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14734                                    request->alpha2))
14735                         goto nla_put_failure;
14736         }
14737
14738         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14739                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14740
14741                 if (wiphy &&
14742                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14743                         goto nla_put_failure;
14744
14745                 if (wiphy &&
14746                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14747                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14748                         goto nla_put_failure;
14749         }
14750
14751         return true;
14752
14753 nla_put_failure:
14754         return false;
14755 }
14756
14757 /*
14758  * This can happen on global regulatory changes or device specific settings
14759  * based on custom regulatory domains.
14760  */
14761 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14762                                      struct regulatory_request *request)
14763 {
14764         struct sk_buff *msg;
14765         void *hdr;
14766
14767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14768         if (!msg)
14769                 return;
14770
14771         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14772         if (!hdr) {
14773                 nlmsg_free(msg);
14774                 return;
14775         }
14776
14777         if (nl80211_reg_change_event_fill(msg, request) == false)
14778                 goto nla_put_failure;
14779
14780         genlmsg_end(msg, hdr);
14781
14782         rcu_read_lock();
14783         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14784                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14785         rcu_read_unlock();
14786
14787         return;
14788
14789 nla_put_failure:
14790         nlmsg_free(msg);
14791 }
14792
14793 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14794                                     struct net_device *netdev,
14795                                     const u8 *buf, size_t len,
14796                                     enum nl80211_commands cmd, gfp_t gfp,
14797                                     int uapsd_queues, const u8 *req_ies,
14798                                     size_t req_ies_len)
14799 {
14800         struct sk_buff *msg;
14801         void *hdr;
14802
14803         msg = nlmsg_new(100 + len + req_ies_len, gfp);
14804         if (!msg)
14805                 return;
14806
14807         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14808         if (!hdr) {
14809                 nlmsg_free(msg);
14810                 return;
14811         }
14812
14813         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14814             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14815             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14816             (req_ies &&
14817              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
14818                 goto nla_put_failure;
14819
14820         if (uapsd_queues >= 0) {
14821                 struct nlattr *nla_wmm =
14822                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
14823                 if (!nla_wmm)
14824                         goto nla_put_failure;
14825
14826                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14827                                uapsd_queues))
14828                         goto nla_put_failure;
14829
14830                 nla_nest_end(msg, nla_wmm);
14831         }
14832
14833         genlmsg_end(msg, hdr);
14834
14835         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14836                                 NL80211_MCGRP_MLME, gfp);
14837         return;
14838
14839  nla_put_failure:
14840         nlmsg_free(msg);
14841 }
14842
14843 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14844                           struct net_device *netdev, const u8 *buf,
14845                           size_t len, gfp_t gfp)
14846 {
14847         nl80211_send_mlme_event(rdev, netdev, buf, len,
14848                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
14849 }
14850
14851 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14852                            struct net_device *netdev, const u8 *buf,
14853                            size_t len, gfp_t gfp, int uapsd_queues,
14854                            const u8 *req_ies, size_t req_ies_len)
14855 {
14856         nl80211_send_mlme_event(rdev, netdev, buf, len,
14857                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
14858                                 req_ies, req_ies_len);
14859 }
14860
14861 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14862                          struct net_device *netdev, const u8 *buf,
14863                          size_t len, gfp_t gfp)
14864 {
14865         nl80211_send_mlme_event(rdev, netdev, buf, len,
14866                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
14867 }
14868
14869 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14870                            struct net_device *netdev, const u8 *buf,
14871                            size_t len, gfp_t gfp)
14872 {
14873         nl80211_send_mlme_event(rdev, netdev, buf, len,
14874                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
14875 }
14876
14877 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14878                                   size_t len)
14879 {
14880         struct wireless_dev *wdev = dev->ieee80211_ptr;
14881         struct wiphy *wiphy = wdev->wiphy;
14882         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14883         const struct ieee80211_mgmt *mgmt = (void *)buf;
14884         u32 cmd;
14885
14886         if (WARN_ON(len < 2))
14887                 return;
14888
14889         if (ieee80211_is_deauth(mgmt->frame_control))
14890                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14891         else
14892                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14893
14894         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14895         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
14896                                 NULL, 0);
14897 }
14898 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14899
14900 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14901                                       struct net_device *netdev, int cmd,
14902                                       const u8 *addr, gfp_t gfp)
14903 {
14904         struct sk_buff *msg;
14905         void *hdr;
14906
14907         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14908         if (!msg)
14909                 return;
14910
14911         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14912         if (!hdr) {
14913                 nlmsg_free(msg);
14914                 return;
14915         }
14916
14917         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14918             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14919             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14920             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14921                 goto nla_put_failure;
14922
14923         genlmsg_end(msg, hdr);
14924
14925         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14926                                 NL80211_MCGRP_MLME, gfp);
14927         return;
14928
14929  nla_put_failure:
14930         nlmsg_free(msg);
14931 }
14932
14933 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14934                                struct net_device *netdev, const u8 *addr,
14935                                gfp_t gfp)
14936 {
14937         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14938                                   addr, gfp);
14939 }
14940
14941 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14942                                 struct net_device *netdev, const u8 *addr,
14943                                 gfp_t gfp)
14944 {
14945         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14946                                   addr, gfp);
14947 }
14948
14949 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14950                                  struct net_device *netdev,
14951                                  struct cfg80211_connect_resp_params *cr,
14952                                  gfp_t gfp)
14953 {
14954         struct sk_buff *msg;
14955         void *hdr;
14956
14957         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14958                         cr->fils.kek_len + cr->fils.pmk_len +
14959                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14960         if (!msg)
14961                 return;
14962
14963         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14964         if (!hdr) {
14965                 nlmsg_free(msg);
14966                 return;
14967         }
14968
14969         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14970             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14971             (cr->bssid &&
14972              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14973             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14974                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14975                         cr->status) ||
14976             (cr->status < 0 &&
14977              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14978               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14979                           cr->timeout_reason))) ||
14980             (cr->req_ie &&
14981              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14982             (cr->resp_ie &&
14983              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14984                      cr->resp_ie)) ||
14985             (cr->fils.update_erp_next_seq_num &&
14986              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14987                          cr->fils.erp_next_seq_num)) ||
14988             (cr->status == WLAN_STATUS_SUCCESS &&
14989              ((cr->fils.kek &&
14990                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14991                        cr->fils.kek)) ||
14992               (cr->fils.pmk &&
14993                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14994               (cr->fils.pmkid &&
14995                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14996                 goto nla_put_failure;
14997
14998         genlmsg_end(msg, hdr);
14999
15000         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15001                                 NL80211_MCGRP_MLME, gfp);
15002         return;
15003
15004  nla_put_failure:
15005         nlmsg_free(msg);
15006 }
15007
15008 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15009                          struct net_device *netdev,
15010                          struct cfg80211_roam_info *info, gfp_t gfp)
15011 {
15012         struct sk_buff *msg;
15013         void *hdr;
15014         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15015
15016         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15017                         info->fils.kek_len + info->fils.pmk_len +
15018                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15019         if (!msg)
15020                 return;
15021
15022         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15023         if (!hdr) {
15024                 nlmsg_free(msg);
15025                 return;
15026         }
15027
15028         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15029             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15030             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15031             (info->req_ie &&
15032              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15033                      info->req_ie)) ||
15034             (info->resp_ie &&
15035              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15036                      info->resp_ie)) ||
15037             (info->fils.update_erp_next_seq_num &&
15038              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15039                          info->fils.erp_next_seq_num)) ||
15040             (info->fils.kek &&
15041              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15042                      info->fils.kek)) ||
15043             (info->fils.pmk &&
15044              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15045             (info->fils.pmkid &&
15046              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15047                 goto nla_put_failure;
15048
15049         genlmsg_end(msg, hdr);
15050
15051         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15052                                 NL80211_MCGRP_MLME, gfp);
15053         return;
15054
15055  nla_put_failure:
15056         nlmsg_free(msg);
15057 }
15058
15059 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15060                                   struct net_device *netdev, const u8 *bssid)
15061 {
15062         struct sk_buff *msg;
15063         void *hdr;
15064
15065         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15066         if (!msg)
15067                 return;
15068
15069         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15070         if (!hdr) {
15071                 nlmsg_free(msg);
15072                 return;
15073         }
15074
15075         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15076             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15077             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15078                 goto nla_put_failure;
15079
15080         genlmsg_end(msg, hdr);
15081
15082         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15083                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15084         return;
15085
15086  nla_put_failure:
15087         nlmsg_free(msg);
15088 }
15089
15090 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15091                                struct net_device *netdev, u16 reason,
15092                                const u8 *ie, size_t ie_len, bool from_ap)
15093 {
15094         struct sk_buff *msg;
15095         void *hdr;
15096
15097         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15098         if (!msg)
15099                 return;
15100
15101         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15102         if (!hdr) {
15103                 nlmsg_free(msg);
15104                 return;
15105         }
15106
15107         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15108             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15109             (reason &&
15110              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15111             (from_ap &&
15112              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15113             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15114                 goto nla_put_failure;
15115
15116         genlmsg_end(msg, hdr);
15117
15118         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15119                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15120         return;
15121
15122  nla_put_failure:
15123         nlmsg_free(msg);
15124 }
15125
15126 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15127                              struct net_device *netdev, const u8 *bssid,
15128                              gfp_t gfp)
15129 {
15130         struct sk_buff *msg;
15131         void *hdr;
15132
15133         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15134         if (!msg)
15135                 return;
15136
15137         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15138         if (!hdr) {
15139                 nlmsg_free(msg);
15140                 return;
15141         }
15142
15143         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15144             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15145             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15146                 goto nla_put_failure;
15147
15148         genlmsg_end(msg, hdr);
15149
15150         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15151                                 NL80211_MCGRP_MLME, gfp);
15152         return;
15153
15154  nla_put_failure:
15155         nlmsg_free(msg);
15156 }
15157
15158 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15159                                         const u8 *ie, u8 ie_len,
15160                                         int sig_dbm, gfp_t gfp)
15161 {
15162         struct wireless_dev *wdev = dev->ieee80211_ptr;
15163         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15164         struct sk_buff *msg;
15165         void *hdr;
15166
15167         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15168                 return;
15169
15170         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15171
15172         msg = nlmsg_new(100 + ie_len, gfp);
15173         if (!msg)
15174                 return;
15175
15176         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15177         if (!hdr) {
15178                 nlmsg_free(msg);
15179                 return;
15180         }
15181
15182         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15183             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15184             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15185             (ie_len && ie &&
15186              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15187             (sig_dbm &&
15188              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15189                 goto nla_put_failure;
15190
15191         genlmsg_end(msg, hdr);
15192
15193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15194                                 NL80211_MCGRP_MLME, gfp);
15195         return;
15196
15197  nla_put_failure:
15198         nlmsg_free(msg);
15199 }
15200 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15201
15202 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15203                                  struct net_device *netdev, const u8 *addr,
15204                                  enum nl80211_key_type key_type, int key_id,
15205                                  const u8 *tsc, gfp_t gfp)
15206 {
15207         struct sk_buff *msg;
15208         void *hdr;
15209
15210         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15211         if (!msg)
15212                 return;
15213
15214         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15215         if (!hdr) {
15216                 nlmsg_free(msg);
15217                 return;
15218         }
15219
15220         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15221             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15222             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15223             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15224             (key_id != -1 &&
15225              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15226             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15227                 goto nla_put_failure;
15228
15229         genlmsg_end(msg, hdr);
15230
15231         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15232                                 NL80211_MCGRP_MLME, gfp);
15233         return;
15234
15235  nla_put_failure:
15236         nlmsg_free(msg);
15237 }
15238
15239 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15240                                     struct ieee80211_channel *channel_before,
15241                                     struct ieee80211_channel *channel_after)
15242 {
15243         struct sk_buff *msg;
15244         void *hdr;
15245         struct nlattr *nl_freq;
15246
15247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15248         if (!msg)
15249                 return;
15250
15251         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15252         if (!hdr) {
15253                 nlmsg_free(msg);
15254                 return;
15255         }
15256
15257         /*
15258          * Since we are applying the beacon hint to a wiphy we know its
15259          * wiphy_idx is valid
15260          */
15261         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15262                 goto nla_put_failure;
15263
15264         /* Before */
15265         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15266         if (!nl_freq)
15267                 goto nla_put_failure;
15268
15269         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15270                 goto nla_put_failure;
15271         nla_nest_end(msg, nl_freq);
15272
15273         /* After */
15274         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15275         if (!nl_freq)
15276                 goto nla_put_failure;
15277
15278         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15279                 goto nla_put_failure;
15280         nla_nest_end(msg, nl_freq);
15281
15282         genlmsg_end(msg, hdr);
15283
15284         rcu_read_lock();
15285         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15286                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15287         rcu_read_unlock();
15288
15289         return;
15290
15291 nla_put_failure:
15292         nlmsg_free(msg);
15293 }
15294
15295 static void nl80211_send_remain_on_chan_event(
15296         int cmd, struct cfg80211_registered_device *rdev,
15297         struct wireless_dev *wdev, u64 cookie,
15298         struct ieee80211_channel *chan,
15299         unsigned int duration, gfp_t gfp)
15300 {
15301         struct sk_buff *msg;
15302         void *hdr;
15303
15304         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15305         if (!msg)
15306                 return;
15307
15308         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15309         if (!hdr) {
15310                 nlmsg_free(msg);
15311                 return;
15312         }
15313
15314         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15315             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15316                                          wdev->netdev->ifindex)) ||
15317             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15318                               NL80211_ATTR_PAD) ||
15319             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15320             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15321                         NL80211_CHAN_NO_HT) ||
15322             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15323                               NL80211_ATTR_PAD))
15324                 goto nla_put_failure;
15325
15326         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15327             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15328                 goto nla_put_failure;
15329
15330         genlmsg_end(msg, hdr);
15331
15332         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15333                                 NL80211_MCGRP_MLME, gfp);
15334         return;
15335
15336  nla_put_failure:
15337         nlmsg_free(msg);
15338 }
15339
15340 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15341                                struct ieee80211_channel *chan,
15342                                unsigned int duration, gfp_t gfp)
15343 {
15344         struct wiphy *wiphy = wdev->wiphy;
15345         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15346
15347         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15348         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15349                                           rdev, wdev, cookie, chan,
15350                                           duration, gfp);
15351 }
15352 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15353
15354 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15355                                         struct ieee80211_channel *chan,
15356                                         gfp_t gfp)
15357 {
15358         struct wiphy *wiphy = wdev->wiphy;
15359         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15360
15361         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15362         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15363                                           rdev, wdev, cookie, chan, 0, gfp);
15364 }
15365 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15366
15367 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15368                       struct station_info *sinfo, gfp_t gfp)
15369 {
15370         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15371         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15372         struct sk_buff *msg;
15373
15374         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15375
15376         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15377         if (!msg)
15378                 return;
15379
15380         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15381                                  rdev, dev, mac_addr, sinfo) < 0) {
15382                 nlmsg_free(msg);
15383                 return;
15384         }
15385
15386         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15387                                 NL80211_MCGRP_MLME, gfp);
15388 }
15389 EXPORT_SYMBOL(cfg80211_new_sta);
15390
15391 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15392                             struct station_info *sinfo, gfp_t gfp)
15393 {
15394         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15395         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15396         struct sk_buff *msg;
15397         struct station_info empty_sinfo = {};
15398
15399         if (!sinfo)
15400                 sinfo = &empty_sinfo;
15401
15402         trace_cfg80211_del_sta(dev, mac_addr);
15403
15404         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15405         if (!msg) {
15406                 cfg80211_sinfo_release_content(sinfo);
15407                 return;
15408         }
15409
15410         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15411                                  rdev, dev, mac_addr, sinfo) < 0) {
15412                 nlmsg_free(msg);
15413                 return;
15414         }
15415
15416         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15417                                 NL80211_MCGRP_MLME, gfp);
15418 }
15419 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15420
15421 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15422                           enum nl80211_connect_failed_reason reason,
15423                           gfp_t gfp)
15424 {
15425         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15426         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15427         struct sk_buff *msg;
15428         void *hdr;
15429
15430         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15431         if (!msg)
15432                 return;
15433
15434         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15435         if (!hdr) {
15436                 nlmsg_free(msg);
15437                 return;
15438         }
15439
15440         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15441             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15442             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15443                 goto nla_put_failure;
15444
15445         genlmsg_end(msg, hdr);
15446
15447         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15448                                 NL80211_MCGRP_MLME, gfp);
15449         return;
15450
15451  nla_put_failure:
15452         nlmsg_free(msg);
15453 }
15454 EXPORT_SYMBOL(cfg80211_conn_failed);
15455
15456 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15457                                        const u8 *addr, gfp_t gfp)
15458 {
15459         struct wireless_dev *wdev = dev->ieee80211_ptr;
15460         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15461         struct sk_buff *msg;
15462         void *hdr;
15463         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15464
15465         if (!nlportid)
15466                 return false;
15467
15468         msg = nlmsg_new(100, gfp);
15469         if (!msg)
15470                 return true;
15471
15472         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15473         if (!hdr) {
15474                 nlmsg_free(msg);
15475                 return true;
15476         }
15477
15478         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15479             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15480             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15481                 goto nla_put_failure;
15482
15483         genlmsg_end(msg, hdr);
15484         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15485         return true;
15486
15487  nla_put_failure:
15488         nlmsg_free(msg);
15489         return true;
15490 }
15491
15492 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15493                                 const u8 *addr, gfp_t gfp)
15494 {
15495         struct wireless_dev *wdev = dev->ieee80211_ptr;
15496         bool ret;
15497
15498         trace_cfg80211_rx_spurious_frame(dev, addr);
15499
15500         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15501                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15502                 trace_cfg80211_return_bool(false);
15503                 return false;
15504         }
15505         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15506                                          addr, gfp);
15507         trace_cfg80211_return_bool(ret);
15508         return ret;
15509 }
15510 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15511
15512 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15513                                         const u8 *addr, gfp_t gfp)
15514 {
15515         struct wireless_dev *wdev = dev->ieee80211_ptr;
15516         bool ret;
15517
15518         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15519
15520         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15521                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15522                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15523                 trace_cfg80211_return_bool(false);
15524                 return false;
15525         }
15526         ret = __nl80211_unexpected_frame(dev,
15527                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15528                                          addr, gfp);
15529         trace_cfg80211_return_bool(ret);
15530         return ret;
15531 }
15532 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15533
15534 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15535                       struct wireless_dev *wdev, u32 nlportid,
15536                       int freq, int sig_dbm,
15537                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15538 {
15539         struct net_device *netdev = wdev->netdev;
15540         struct sk_buff *msg;
15541         void *hdr;
15542
15543         msg = nlmsg_new(100 + len, gfp);
15544         if (!msg)
15545                 return -ENOMEM;
15546
15547         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15548         if (!hdr) {
15549                 nlmsg_free(msg);
15550                 return -ENOMEM;
15551         }
15552
15553         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15554             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15555                                         netdev->ifindex)) ||
15556             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15557                               NL80211_ATTR_PAD) ||
15558             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15559             (sig_dbm &&
15560              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15561             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15562             (flags &&
15563              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15564                 goto nla_put_failure;
15565
15566         genlmsg_end(msg, hdr);
15567
15568         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15569
15570  nla_put_failure:
15571         nlmsg_free(msg);
15572         return -ENOBUFS;
15573 }
15574
15575 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15576                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15577 {
15578         struct wiphy *wiphy = wdev->wiphy;
15579         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15580         struct net_device *netdev = wdev->netdev;
15581         struct sk_buff *msg;
15582         void *hdr;
15583
15584         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15585
15586         msg = nlmsg_new(100 + len, gfp);
15587         if (!msg)
15588                 return;
15589
15590         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15591         if (!hdr) {
15592                 nlmsg_free(msg);
15593                 return;
15594         }
15595
15596         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15597             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15598                                    netdev->ifindex)) ||
15599             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15600                               NL80211_ATTR_PAD) ||
15601             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15602             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15603                               NL80211_ATTR_PAD) ||
15604             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15605                 goto nla_put_failure;
15606
15607         genlmsg_end(msg, hdr);
15608
15609         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15610                                 NL80211_MCGRP_MLME, gfp);
15611         return;
15612
15613  nla_put_failure:
15614         nlmsg_free(msg);
15615 }
15616 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15617
15618 static int __nl80211_rx_control_port(struct net_device *dev,
15619                                      struct sk_buff *skb,
15620                                      bool unencrypted, gfp_t gfp)
15621 {
15622         struct wireless_dev *wdev = dev->ieee80211_ptr;
15623         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15624         struct ethhdr *ehdr = eth_hdr(skb);
15625         const u8 *addr = ehdr->h_source;
15626         u16 proto = be16_to_cpu(skb->protocol);
15627         struct sk_buff *msg;
15628         void *hdr;
15629         struct nlattr *frame;
15630
15631         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15632
15633         if (!nlportid)
15634                 return -ENOENT;
15635
15636         msg = nlmsg_new(100 + skb->len, gfp);
15637         if (!msg)
15638                 return -ENOMEM;
15639
15640         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15641         if (!hdr) {
15642                 nlmsg_free(msg);
15643                 return -ENOBUFS;
15644         }
15645
15646         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15647             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15648             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15649                               NL80211_ATTR_PAD) ||
15650             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15651             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15652             (unencrypted && nla_put_flag(msg,
15653                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15654                 goto nla_put_failure;
15655
15656         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15657         if (!frame)
15658                 goto nla_put_failure;
15659
15660         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15661         genlmsg_end(msg, hdr);
15662
15663         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15664
15665  nla_put_failure:
15666         nlmsg_free(msg);
15667         return -ENOBUFS;
15668 }
15669
15670 bool cfg80211_rx_control_port(struct net_device *dev,
15671                               struct sk_buff *skb, bool unencrypted)
15672 {
15673         int ret;
15674
15675         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15676         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15677         trace_cfg80211_return_bool(ret == 0);
15678         return ret == 0;
15679 }
15680 EXPORT_SYMBOL(cfg80211_rx_control_port);
15681
15682 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15683                                             const char *mac, gfp_t gfp)
15684 {
15685         struct wireless_dev *wdev = dev->ieee80211_ptr;
15686         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15687         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15688         void **cb;
15689
15690         if (!msg)
15691                 return NULL;
15692
15693         cb = (void **)msg->cb;
15694
15695         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15696         if (!cb[0]) {
15697                 nlmsg_free(msg);
15698                 return NULL;
15699         }
15700
15701         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15702             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15703                 goto nla_put_failure;
15704
15705         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15706                 goto nla_put_failure;
15707
15708         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15709         if (!cb[1])
15710                 goto nla_put_failure;
15711
15712         cb[2] = rdev;
15713
15714         return msg;
15715  nla_put_failure:
15716         nlmsg_free(msg);
15717         return NULL;
15718 }
15719
15720 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15721 {
15722         void **cb = (void **)msg->cb;
15723         struct cfg80211_registered_device *rdev = cb[2];
15724
15725         nla_nest_end(msg, cb[1]);
15726         genlmsg_end(msg, cb[0]);
15727
15728         memset(msg->cb, 0, sizeof(msg->cb));
15729
15730         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15731                                 NL80211_MCGRP_MLME, gfp);
15732 }
15733
15734 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15735                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15736                               s32 rssi_level, gfp_t gfp)
15737 {
15738         struct sk_buff *msg;
15739         struct wireless_dev *wdev = dev->ieee80211_ptr;
15740         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15741
15742         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15743
15744         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15745                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15746                 return;
15747
15748         if (wdev->cqm_config) {
15749                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15750
15751                 cfg80211_cqm_rssi_update(rdev, dev);
15752
15753                 if (rssi_level == 0)
15754                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15755         }
15756
15757         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15758         if (!msg)
15759                 return;
15760
15761         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15762                         rssi_event))
15763                 goto nla_put_failure;
15764
15765         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15766                                       rssi_level))
15767                 goto nla_put_failure;
15768
15769         cfg80211_send_cqm(msg, gfp);
15770
15771         return;
15772
15773  nla_put_failure:
15774         nlmsg_free(msg);
15775 }
15776 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15777
15778 void cfg80211_cqm_txe_notify(struct net_device *dev,
15779                              const u8 *peer, u32 num_packets,
15780                              u32 rate, u32 intvl, gfp_t gfp)
15781 {
15782         struct sk_buff *msg;
15783
15784         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15785         if (!msg)
15786                 return;
15787
15788         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15789                 goto nla_put_failure;
15790
15791         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15792                 goto nla_put_failure;
15793
15794         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15795                 goto nla_put_failure;
15796
15797         cfg80211_send_cqm(msg, gfp);
15798         return;
15799
15800  nla_put_failure:
15801         nlmsg_free(msg);
15802 }
15803 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15804
15805 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15806                                  const u8 *peer, u32 num_packets, gfp_t gfp)
15807 {
15808         struct sk_buff *msg;
15809
15810         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15811
15812         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15813         if (!msg)
15814                 return;
15815
15816         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15817                 goto nla_put_failure;
15818
15819         cfg80211_send_cqm(msg, gfp);
15820         return;
15821
15822  nla_put_failure:
15823         nlmsg_free(msg);
15824 }
15825 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15826
15827 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15828 {
15829         struct sk_buff *msg;
15830
15831         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15832         if (!msg)
15833                 return;
15834
15835         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15836                 goto nla_put_failure;
15837
15838         cfg80211_send_cqm(msg, gfp);
15839         return;
15840
15841  nla_put_failure:
15842         nlmsg_free(msg);
15843 }
15844 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15845
15846 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15847                                      struct net_device *netdev, const u8 *bssid,
15848                                      const u8 *replay_ctr, gfp_t gfp)
15849 {
15850         struct sk_buff *msg;
15851         struct nlattr *rekey_attr;
15852         void *hdr;
15853
15854         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15855         if (!msg)
15856                 return;
15857
15858         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15859         if (!hdr) {
15860                 nlmsg_free(msg);
15861                 return;
15862         }
15863
15864         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15865             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15866             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15867                 goto nla_put_failure;
15868
15869         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
15870         if (!rekey_attr)
15871                 goto nla_put_failure;
15872
15873         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15874                     NL80211_REPLAY_CTR_LEN, replay_ctr))
15875                 goto nla_put_failure;
15876
15877         nla_nest_end(msg, rekey_attr);
15878
15879         genlmsg_end(msg, hdr);
15880
15881         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15882                                 NL80211_MCGRP_MLME, gfp);
15883         return;
15884
15885  nla_put_failure:
15886         nlmsg_free(msg);
15887 }
15888
15889 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15890                                const u8 *replay_ctr, gfp_t gfp)
15891 {
15892         struct wireless_dev *wdev = dev->ieee80211_ptr;
15893         struct wiphy *wiphy = wdev->wiphy;
15894         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15895
15896         trace_cfg80211_gtk_rekey_notify(dev, bssid);
15897         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15898 }
15899 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15900
15901 static void
15902 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15903                                struct net_device *netdev, int index,
15904                                const u8 *bssid, bool preauth, gfp_t gfp)
15905 {
15906         struct sk_buff *msg;
15907         struct nlattr *attr;
15908         void *hdr;
15909
15910         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15911         if (!msg)
15912                 return;
15913
15914         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15915         if (!hdr) {
15916                 nlmsg_free(msg);
15917                 return;
15918         }
15919
15920         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15921             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15922                 goto nla_put_failure;
15923
15924         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15925         if (!attr)
15926                 goto nla_put_failure;
15927
15928         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15929             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15930             (preauth &&
15931              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15932                 goto nla_put_failure;
15933
15934         nla_nest_end(msg, attr);
15935
15936         genlmsg_end(msg, hdr);
15937
15938         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15939                                 NL80211_MCGRP_MLME, gfp);
15940         return;
15941
15942  nla_put_failure:
15943         nlmsg_free(msg);
15944 }
15945
15946 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15947                                      const u8 *bssid, bool preauth, gfp_t gfp)
15948 {
15949         struct wireless_dev *wdev = dev->ieee80211_ptr;
15950         struct wiphy *wiphy = wdev->wiphy;
15951         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15952
15953         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15954         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15955 }
15956 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15957
15958 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15959                                      struct net_device *netdev,
15960                                      struct cfg80211_chan_def *chandef,
15961                                      gfp_t gfp,
15962                                      enum nl80211_commands notif,
15963                                      u8 count)
15964 {
15965         struct sk_buff *msg;
15966         void *hdr;
15967
15968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15969         if (!msg)
15970                 return;
15971
15972         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15973         if (!hdr) {
15974                 nlmsg_free(msg);
15975                 return;
15976         }
15977
15978         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15979                 goto nla_put_failure;
15980
15981         if (nl80211_send_chandef(msg, chandef))
15982                 goto nla_put_failure;
15983
15984         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15985             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15986                         goto nla_put_failure;
15987
15988         genlmsg_end(msg, hdr);
15989
15990         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15991                                 NL80211_MCGRP_MLME, gfp);
15992         return;
15993
15994  nla_put_failure:
15995         nlmsg_free(msg);
15996 }
15997
15998 void cfg80211_ch_switch_notify(struct net_device *dev,
15999                                struct cfg80211_chan_def *chandef)
16000 {
16001         struct wireless_dev *wdev = dev->ieee80211_ptr;
16002         struct wiphy *wiphy = wdev->wiphy;
16003         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16004
16005         ASSERT_WDEV_LOCK(wdev);
16006
16007         trace_cfg80211_ch_switch_notify(dev, chandef);
16008
16009         wdev->chandef = *chandef;
16010         wdev->preset_chandef = *chandef;
16011
16012         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16013             !WARN_ON(!wdev->current_bss))
16014                 wdev->current_bss->pub.channel = chandef->chan;
16015
16016         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16017                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16018 }
16019 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16020
16021 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16022                                        struct cfg80211_chan_def *chandef,
16023                                        u8 count)
16024 {
16025         struct wireless_dev *wdev = dev->ieee80211_ptr;
16026         struct wiphy *wiphy = wdev->wiphy;
16027         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16028
16029         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16030
16031         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16032                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16033 }
16034 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16035
16036 void
16037 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16038                      const struct cfg80211_chan_def *chandef,
16039                      enum nl80211_radar_event event,
16040                      struct net_device *netdev, gfp_t gfp)
16041 {
16042         struct sk_buff *msg;
16043         void *hdr;
16044
16045         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16046         if (!msg)
16047                 return;
16048
16049         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16050         if (!hdr) {
16051                 nlmsg_free(msg);
16052                 return;
16053         }
16054
16055         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16056                 goto nla_put_failure;
16057
16058         /* NOP and radar events don't need a netdev parameter */
16059         if (netdev) {
16060                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16061
16062                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16063                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16064                                       NL80211_ATTR_PAD))
16065                         goto nla_put_failure;
16066         }
16067
16068         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16069                 goto nla_put_failure;
16070
16071         if (nl80211_send_chandef(msg, chandef))
16072                 goto nla_put_failure;
16073
16074         genlmsg_end(msg, hdr);
16075
16076         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16077                                 NL80211_MCGRP_MLME, gfp);
16078         return;
16079
16080  nla_put_failure:
16081         nlmsg_free(msg);
16082 }
16083
16084 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16085                                        struct sta_opmode_info *sta_opmode,
16086                                        gfp_t gfp)
16087 {
16088         struct sk_buff *msg;
16089         struct wireless_dev *wdev = dev->ieee80211_ptr;
16090         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16091         void *hdr;
16092
16093         if (WARN_ON(!mac))
16094                 return;
16095
16096         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16097         if (!msg)
16098                 return;
16099
16100         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16101         if (!hdr) {
16102                 nlmsg_free(msg);
16103                 return;
16104         }
16105
16106         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16107                 goto nla_put_failure;
16108
16109         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16110                 goto nla_put_failure;
16111
16112         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16113                 goto nla_put_failure;
16114
16115         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16116             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16117                 goto nla_put_failure;
16118
16119         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16120             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16121                 goto nla_put_failure;
16122
16123         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16124             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16125                 goto nla_put_failure;
16126
16127         genlmsg_end(msg, hdr);
16128
16129         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16130                                 NL80211_MCGRP_MLME, gfp);
16131
16132         return;
16133
16134 nla_put_failure:
16135         nlmsg_free(msg);
16136 }
16137 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16138
16139 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16140                            u64 cookie, bool acked, s32 ack_signal,
16141                            bool is_valid_ack_signal, gfp_t gfp)
16142 {
16143         struct wireless_dev *wdev = dev->ieee80211_ptr;
16144         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16145         struct sk_buff *msg;
16146         void *hdr;
16147
16148         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16149
16150         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16151
16152         if (!msg)
16153                 return;
16154
16155         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16156         if (!hdr) {
16157                 nlmsg_free(msg);
16158                 return;
16159         }
16160
16161         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16162             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16163             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16164             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16165                               NL80211_ATTR_PAD) ||
16166             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16167             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16168                                                 ack_signal)))
16169                 goto nla_put_failure;
16170
16171         genlmsg_end(msg, hdr);
16172
16173         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16174                                 NL80211_MCGRP_MLME, gfp);
16175         return;
16176
16177  nla_put_failure:
16178         nlmsg_free(msg);
16179 }
16180 EXPORT_SYMBOL(cfg80211_probe_status);
16181
16182 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16183                                  const u8 *frame, size_t len,
16184                                  int freq, int sig_dbm)
16185 {
16186         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16187         struct sk_buff *msg;
16188         void *hdr;
16189         struct cfg80211_beacon_registration *reg;
16190
16191         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16192
16193         spin_lock_bh(&rdev->beacon_registrations_lock);
16194         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16195                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16196                 if (!msg) {
16197                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16198                         return;
16199                 }
16200
16201                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16202                 if (!hdr)
16203                         goto nla_put_failure;
16204
16205                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16206                     (freq &&
16207                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16208                     (sig_dbm &&
16209                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16210                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16211                         goto nla_put_failure;
16212
16213                 genlmsg_end(msg, hdr);
16214
16215                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16216         }
16217         spin_unlock_bh(&rdev->beacon_registrations_lock);
16218         return;
16219
16220  nla_put_failure:
16221         spin_unlock_bh(&rdev->beacon_registrations_lock);
16222         nlmsg_free(msg);
16223 }
16224 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16225
16226 #ifdef CONFIG_PM
16227 static int cfg80211_net_detect_results(struct sk_buff *msg,
16228                                        struct cfg80211_wowlan_wakeup *wakeup)
16229 {
16230         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16231         struct nlattr *nl_results, *nl_match, *nl_freqs;
16232         int i, j;
16233
16234         nl_results = nla_nest_start_noflag(msg,
16235                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16236         if (!nl_results)
16237                 return -EMSGSIZE;
16238
16239         for (i = 0; i < nd->n_matches; i++) {
16240                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16241
16242                 nl_match = nla_nest_start_noflag(msg, i);
16243                 if (!nl_match)
16244                         break;
16245
16246                 /* The SSID attribute is optional in nl80211, but for
16247                  * simplicity reasons it's always present in the
16248                  * cfg80211 structure.  If a driver can't pass the
16249                  * SSID, that needs to be changed.  A zero length SSID
16250                  * is still a valid SSID (wildcard), so it cannot be
16251                  * used for this purpose.
16252                  */
16253                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16254                             match->ssid.ssid)) {
16255                         nla_nest_cancel(msg, nl_match);
16256                         goto out;
16257                 }
16258
16259                 if (match->n_channels) {
16260                         nl_freqs = nla_nest_start_noflag(msg,
16261                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16262                         if (!nl_freqs) {
16263                                 nla_nest_cancel(msg, nl_match);
16264                                 goto out;
16265                         }
16266
16267                         for (j = 0; j < match->n_channels; j++) {
16268                                 if (nla_put_u32(msg, j, match->channels[j])) {
16269                                         nla_nest_cancel(msg, nl_freqs);
16270                                         nla_nest_cancel(msg, nl_match);
16271                                         goto out;
16272                                 }
16273                         }
16274
16275                         nla_nest_end(msg, nl_freqs);
16276                 }
16277
16278                 nla_nest_end(msg, nl_match);
16279         }
16280
16281 out:
16282         nla_nest_end(msg, nl_results);
16283         return 0;
16284 }
16285
16286 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16287                                    struct cfg80211_wowlan_wakeup *wakeup,
16288                                    gfp_t gfp)
16289 {
16290         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16291         struct sk_buff *msg;
16292         void *hdr;
16293         int size = 200;
16294
16295         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16296
16297         if (wakeup)
16298                 size += wakeup->packet_present_len;
16299
16300         msg = nlmsg_new(size, gfp);
16301         if (!msg)
16302                 return;
16303
16304         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16305         if (!hdr)
16306                 goto free_msg;
16307
16308         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16309             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16310                               NL80211_ATTR_PAD))
16311                 goto free_msg;
16312
16313         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16314                                         wdev->netdev->ifindex))
16315                 goto free_msg;
16316
16317         if (wakeup) {
16318                 struct nlattr *reasons;
16319
16320                 reasons = nla_nest_start_noflag(msg,
16321                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16322                 if (!reasons)
16323                         goto free_msg;
16324
16325                 if (wakeup->disconnect &&
16326                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16327                         goto free_msg;
16328                 if (wakeup->magic_pkt &&
16329                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16330                         goto free_msg;
16331                 if (wakeup->gtk_rekey_failure &&
16332                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16333                         goto free_msg;
16334                 if (wakeup->eap_identity_req &&
16335                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16336                         goto free_msg;
16337                 if (wakeup->four_way_handshake &&
16338                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16339                         goto free_msg;
16340                 if (wakeup->rfkill_release &&
16341                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16342                         goto free_msg;
16343
16344                 if (wakeup->pattern_idx >= 0 &&
16345                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16346                                 wakeup->pattern_idx))
16347                         goto free_msg;
16348
16349                 if (wakeup->tcp_match &&
16350                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16351                         goto free_msg;
16352
16353                 if (wakeup->tcp_connlost &&
16354                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16355                         goto free_msg;
16356
16357                 if (wakeup->tcp_nomoretokens &&
16358                     nla_put_flag(msg,
16359                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16360                         goto free_msg;
16361
16362                 if (wakeup->packet) {
16363                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16364                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16365
16366                         if (!wakeup->packet_80211) {
16367                                 pkt_attr =
16368                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16369                                 len_attr =
16370                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16371                         }
16372
16373                         if (wakeup->packet_len &&
16374                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16375                                 goto free_msg;
16376
16377                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16378                                     wakeup->packet))
16379                                 goto free_msg;
16380                 }
16381
16382                 if (wakeup->net_detect &&
16383                     cfg80211_net_detect_results(msg, wakeup))
16384                                 goto free_msg;
16385
16386                 nla_nest_end(msg, reasons);
16387         }
16388
16389         genlmsg_end(msg, hdr);
16390
16391         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16392                                 NL80211_MCGRP_MLME, gfp);
16393         return;
16394
16395  free_msg:
16396         nlmsg_free(msg);
16397 }
16398 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16399 #endif
16400
16401 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16402                                 enum nl80211_tdls_operation oper,
16403                                 u16 reason_code, gfp_t gfp)
16404 {
16405         struct wireless_dev *wdev = dev->ieee80211_ptr;
16406         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16407         struct sk_buff *msg;
16408         void *hdr;
16409
16410         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16411                                          reason_code);
16412
16413         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16414         if (!msg)
16415                 return;
16416
16417         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16418         if (!hdr) {
16419                 nlmsg_free(msg);
16420                 return;
16421         }
16422
16423         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16424             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16425             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16426             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16427             (reason_code > 0 &&
16428              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16429                 goto nla_put_failure;
16430
16431         genlmsg_end(msg, hdr);
16432
16433         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16434                                 NL80211_MCGRP_MLME, gfp);
16435         return;
16436
16437  nla_put_failure:
16438         nlmsg_free(msg);
16439 }
16440 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16441
16442 static int nl80211_netlink_notify(struct notifier_block * nb,
16443                                   unsigned long state,
16444                                   void *_notify)
16445 {
16446         struct netlink_notify *notify = _notify;
16447         struct cfg80211_registered_device *rdev;
16448         struct wireless_dev *wdev;
16449         struct cfg80211_beacon_registration *reg, *tmp;
16450
16451         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16452                 return NOTIFY_DONE;
16453
16454         rcu_read_lock();
16455
16456         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16457                 struct cfg80211_sched_scan_request *sched_scan_req;
16458
16459                 list_for_each_entry_rcu(sched_scan_req,
16460                                         &rdev->sched_scan_req_list,
16461                                         list) {
16462                         if (sched_scan_req->owner_nlportid == notify->portid) {
16463                                 sched_scan_req->nl_owner_dead = true;
16464                                 schedule_work(&rdev->sched_scan_stop_wk);
16465                         }
16466                 }
16467
16468                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16469                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16470
16471                         if (wdev->owner_nlportid == notify->portid) {
16472                                 wdev->nl_owner_dead = true;
16473                                 schedule_work(&rdev->destroy_work);
16474                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16475                                 schedule_work(&wdev->disconnect_wk);
16476                         }
16477
16478                         cfg80211_release_pmsr(wdev, notify->portid);
16479                 }
16480
16481                 spin_lock_bh(&rdev->beacon_registrations_lock);
16482                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16483                                          list) {
16484                         if (reg->nlportid == notify->portid) {
16485                                 list_del(&reg->list);
16486                                 kfree(reg);
16487                                 break;
16488                         }
16489                 }
16490                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16491         }
16492
16493         rcu_read_unlock();
16494
16495         /*
16496          * It is possible that the user space process that is controlling the
16497          * indoor setting disappeared, so notify the regulatory core.
16498          */
16499         regulatory_netlink_notify(notify->portid);
16500         return NOTIFY_OK;
16501 }
16502
16503 static struct notifier_block nl80211_netlink_notifier = {
16504         .notifier_call = nl80211_netlink_notify,
16505 };
16506
16507 void cfg80211_ft_event(struct net_device *netdev,
16508                        struct cfg80211_ft_event_params *ft_event)
16509 {
16510         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16511         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16512         struct sk_buff *msg;
16513         void *hdr;
16514
16515         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16516
16517         if (!ft_event->target_ap)
16518                 return;
16519
16520         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16521                         GFP_KERNEL);
16522         if (!msg)
16523                 return;
16524
16525         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16526         if (!hdr)
16527                 goto out;
16528
16529         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16530             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16531             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16532                 goto out;
16533
16534         if (ft_event->ies &&
16535             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16536                 goto out;
16537         if (ft_event->ric_ies &&
16538             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16539                     ft_event->ric_ies))
16540                 goto out;
16541
16542         genlmsg_end(msg, hdr);
16543
16544         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16545                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16546         return;
16547  out:
16548         nlmsg_free(msg);
16549 }
16550 EXPORT_SYMBOL(cfg80211_ft_event);
16551
16552 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16553 {
16554         struct cfg80211_registered_device *rdev;
16555         struct sk_buff *msg;
16556         void *hdr;
16557         u32 nlportid;
16558
16559         rdev = wiphy_to_rdev(wdev->wiphy);
16560         if (!rdev->crit_proto_nlportid)
16561                 return;
16562
16563         nlportid = rdev->crit_proto_nlportid;
16564         rdev->crit_proto_nlportid = 0;
16565
16566         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16567         if (!msg)
16568                 return;
16569
16570         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16571         if (!hdr)
16572                 goto nla_put_failure;
16573
16574         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16575             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16576                               NL80211_ATTR_PAD))
16577                 goto nla_put_failure;
16578
16579         genlmsg_end(msg, hdr);
16580
16581         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16582         return;
16583
16584  nla_put_failure:
16585         nlmsg_free(msg);
16586 }
16587 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16588
16589 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16590 {
16591         struct wiphy *wiphy = wdev->wiphy;
16592         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16593         struct sk_buff *msg;
16594         void *hdr;
16595
16596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16597         if (!msg)
16598                 return;
16599
16600         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16601         if (!hdr)
16602                 goto out;
16603
16604         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16605             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16606             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16607                               NL80211_ATTR_PAD))
16608                 goto out;
16609
16610         genlmsg_end(msg, hdr);
16611
16612         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16613                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16614         return;
16615  out:
16616         nlmsg_free(msg);
16617 }
16618
16619 int cfg80211_external_auth_request(struct net_device *dev,
16620                                    struct cfg80211_external_auth_params *params,
16621                                    gfp_t gfp)
16622 {
16623         struct wireless_dev *wdev = dev->ieee80211_ptr;
16624         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16625         struct sk_buff *msg;
16626         void *hdr;
16627
16628         if (!wdev->conn_owner_nlportid)
16629                 return -EINVAL;
16630
16631         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16632         if (!msg)
16633                 return -ENOMEM;
16634
16635         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16636         if (!hdr)
16637                 goto nla_put_failure;
16638
16639         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16640             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16641             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16642             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16643                         params->action) ||
16644             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16645             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16646                     params->ssid.ssid))
16647                 goto nla_put_failure;
16648
16649         genlmsg_end(msg, hdr);
16650         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16651                         wdev->conn_owner_nlportid);
16652         return 0;
16653
16654  nla_put_failure:
16655         nlmsg_free(msg);
16656         return -ENOBUFS;
16657 }
16658 EXPORT_SYMBOL(cfg80211_external_auth_request);
16659
16660 void cfg80211_update_owe_info_event(struct net_device *netdev,
16661                                     struct cfg80211_update_owe_info *owe_info,
16662                                     gfp_t gfp)
16663 {
16664         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16665         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16666         struct sk_buff *msg;
16667         void *hdr;
16668
16669         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16670
16671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16672         if (!msg)
16673                 return;
16674
16675         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16676         if (!hdr)
16677                 goto nla_put_failure;
16678
16679         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16680             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16681             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16682                 goto nla_put_failure;
16683
16684         if (!owe_info->ie_len ||
16685             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16686                 goto nla_put_failure;
16687
16688         genlmsg_end(msg, hdr);
16689
16690         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16691                                 NL80211_MCGRP_MLME, gfp);
16692         return;
16693
16694 nla_put_failure:
16695         genlmsg_cancel(msg, hdr);
16696         nlmsg_free(msg);
16697 }
16698 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16699
16700 /* initialisation/exit functions */
16701
16702 int __init nl80211_init(void)
16703 {
16704         int err;
16705
16706         err = genl_register_family(&nl80211_fam);
16707         if (err)
16708                 return err;
16709
16710         err = netlink_register_notifier(&nl80211_netlink_notifier);
16711         if (err)
16712                 goto err_out;
16713
16714         return 0;
16715  err_out:
16716         genl_unregister_family(&nl80211_fam);
16717         return err;
16718 }
16719
16720 void nl80211_exit(void)
16721 {
16722         netlink_unregister_notifier(&nl80211_netlink_notifier);
16723         genl_unregister_family(&nl80211_fam);
16724 }