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 static const struct nla_policy
 285 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 286         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 287                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 288         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 289                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 290 };
 291
 292 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 293         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 294         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 295         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 296                                       .len = 20-1 },
 297         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 298
 299         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 300         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 302                                                 NL80211_EDMG_CHANNELS_MIN,
 303                                                 NL80211_EDMG_CHANNELS_MAX),
 304         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 305                                                 NL80211_EDMG_BW_CONFIG_MIN,
 306                                                 NL80211_EDMG_BW_CONFIG_MAX),
 307
 308         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 309         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 310         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 311
 312         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 313         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 314         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 315         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 316         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 317         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 318
 319         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 320         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 322
 323         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 324         [NL80211_ATTR_PREV_BSSID] = {
 325                 .type = NLA_EXACT_LEN_WARN,
 326                 .len = ETH_ALEN
 327         },
 328
 329         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 330         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 331                                     .len = WLAN_MAX_KEY_LEN },
 332         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 333         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 334         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 336         [NL80211_ATTR_KEY_TYPE] =
 337                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 338
 339         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 340         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 341         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 342                                        .len = IEEE80211_MAX_DATA_LEN },
 343         [NL80211_ATTR_BEACON_TAIL] =
 344                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 345                                        IEEE80211_MAX_DATA_LEN),
 346         [NL80211_ATTR_STA_AID] =
 347                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 348         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 349         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 350         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 351                                                .len = NL80211_MAX_SUPP_RATES },
 352         [NL80211_ATTR_STA_PLINK_ACTION] =
 353                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 354         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 355                 NLA_POLICY_RANGE(NLA_U8,
 356                                  NL80211_TX_POWER_AUTOMATIC,
 357                                  NL80211_TX_POWER_FIXED),
 358         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 359         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 360         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 361         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 362                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 363         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 364
 365         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 366         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 367
 368         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 369         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 370         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 371         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 372                                            .len = NL80211_MAX_SUPP_RATES },
 373         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 374
 375         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 376         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 377
 378         [NL80211_ATTR_HT_CAPABILITY] = {
 379                 .type = NLA_EXACT_LEN_WARN,
 380                 .len = NL80211_HT_CAPABILITY_LEN
 381         },
 382
 383         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 384         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 385                                                    validate_ie_attr,
 386                                                    IEEE80211_MAX_DATA_LEN),
 387         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 388         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 389
 390         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 391                                 .len = IEEE80211_MAX_SSID_LEN },
 392         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 393         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 394         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 395         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 397                                                   NL80211_MFP_NO,
 398                                                   NL80211_MFP_OPTIONAL),
 399         [NL80211_ATTR_STA_FLAGS2] = {
 400                 .len = sizeof(struct nl80211_sta_flag_update),
 401         },
 402         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 403         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 404         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 405         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 406         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 407         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 408         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 409         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 410         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 411         [NL80211_ATTR_PMKID] = {
 412                 .type = NLA_EXACT_LEN_WARN,
 413                 .len = WLAN_PMKID_LEN
 414         },
 415         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 416         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 417         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 418         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 419                                  .len = IEEE80211_MAX_DATA_LEN },
 420         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 421         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 422                                                    NL80211_PS_DISABLED,
 423                                                    NL80211_PS_ENABLED),
 424         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 425         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 426         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 427         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 428         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 429         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 430         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 431         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 432         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 433         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 434         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 435         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 436         [NL80211_ATTR_STA_PLINK_STATE] =
 437                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 438         [NL80211_ATTR_MESH_PEER_AID] =
 439                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 440         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 441         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 442         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 443         [NL80211_ATTR_HIDDEN_SSID] =
 444                 NLA_POLICY_RANGE(NLA_U32,
 445                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 446                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 447         [NL80211_ATTR_IE_PROBE_RESP] =
 448                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 449                                        IEEE80211_MAX_DATA_LEN),
 450         [NL80211_ATTR_IE_ASSOC_RESP] =
 451                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 452                                        IEEE80211_MAX_DATA_LEN),
 453         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 454         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 455         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 456         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 457         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 458         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 459         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 460         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 461         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 463         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 464                                       .len = IEEE80211_MAX_DATA_LEN },
 465         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 466         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 467         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 468                 .len = NL80211_HT_CAPABILITY_LEN
 469         },
 470         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 471         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 472         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 473         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 474         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 475         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 476         [NL80211_ATTR_VHT_CAPABILITY] = {
 477                 .type = NLA_EXACT_LEN_WARN,
 478                 .len = NL80211_VHT_CAPABILITY_LEN
 479         },
 480         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 481         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 482         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 483         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 484                 NLA_POLICY_RANGE(NLA_U32,
 485                                  NL80211_MESH_POWER_UNKNOWN + 1,
 486                                  NL80211_MESH_POWER_MAX),
 487         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 488         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 489         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 490         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 491         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 492         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 493         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 494                 .len = NL80211_VHT_CAPABILITY_LEN,
 495         },
 496         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 497         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 498                                   .len = IEEE80211_MAX_DATA_LEN },
 499         [NL80211_ATTR_PEER_AID] =
 500                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 501         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 502         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 503         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 504         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 505         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 506         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 507         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 508         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 509         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 510         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 511         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 512         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 513         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 514                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 515         [NL80211_ATTR_MAC_HINT] = {
 516                 .type = NLA_EXACT_LEN_WARN,
 517                 .len = ETH_ALEN
 518         },
 519         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 520         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 521         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 522         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 523         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 524         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 525         [NL80211_ATTR_USER_PRIO] =
 526                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 527         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 528         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 529         [NL80211_ATTR_MAC_MASK] = {
 530                 .type = NLA_EXACT_LEN_WARN,
 531                 .len = ETH_ALEN
 532         },
 533         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 534         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 535         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 536         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 537         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 538         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 539         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 540                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 541         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 542                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 543         },
 544         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 545                 .type = NLA_EXACT_LEN_WARN,
 546                 .len = ETH_ALEN
 547         },
 548         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 549         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 550         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 551         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 552                                     .len = FILS_MAX_KEK_LEN },
 553         [NL80211_ATTR_FILS_NONCES] = {
 554                 .type = NLA_EXACT_LEN_WARN,
 555                 .len = 2 * FILS_NONCE_LEN
 556         },
 557         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 558         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 559         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 560         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 561                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 562         },
 563         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 564         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 565                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 566         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 567                                           .len = FILS_ERP_MAX_REALM_LEN },
 568         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 569         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 570                                         .len = FILS_ERP_MAX_RRK_LEN },
 571         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 572         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 573         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 575
 576         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 577         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 578         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 579         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 580                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 581
 582         [NL80211_ATTR_FTM_RESPONDER] = {
 583                 .type = NLA_NESTED,
 584                 .validation_data = nl80211_ftm_responder_policy,
 585         },
 586         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 587         [NL80211_ATTR_PEER_MEASUREMENTS] =
 588                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 589         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 590         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 591                                         .len = SAE_PASSWORD_MAX_LEN },
 592         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 593         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 594 };
 595
 596 /* policy for the key attributes */
 597 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 598         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 599         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 600         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 601         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 602         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 603         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 604         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 605         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 606         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 607 };
 608
 609 /* policy for the key default flags */
 610 static const struct nla_policy
 611 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 612         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 613         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 614 };
 615
 616 #ifdef CONFIG_PM
 617 /* policy for WoWLAN attributes */
 618 static const struct nla_policy
 619 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 620         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 621         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 622         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 623         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 624         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 625         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 626         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 627         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 628         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 629         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 630 };
 631
 632 static const struct nla_policy
 633 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 634         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 635         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 636         [NL80211_WOWLAN_TCP_DST_MAC] = {
 637                 .type = NLA_EXACT_LEN_WARN,
 638                 .len = ETH_ALEN
 639         },
 640         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 641         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 642         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 643         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 644                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 645         },
 646         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 647                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 648         },
 649         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 650         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 651         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 652 };
 653 #endif /* CONFIG_PM */
 654
 655 /* policy for coalesce rule attributes */
 656 static const struct nla_policy
 657 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 658         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 659         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 660                 NLA_POLICY_RANGE(NLA_U32,
 661                                  NL80211_COALESCE_CONDITION_MATCH,
 662                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 663         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 664 };
 665
 666 /* policy for GTK rekey offload attributes */
 667 static const struct nla_policy
 668 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 669         [NL80211_REKEY_DATA_KEK] = {
 670                 .type = NLA_EXACT_LEN_WARN,
 671                 .len = NL80211_KEK_LEN,
 672         },
 673         [NL80211_REKEY_DATA_KCK] = {
 674                 .type = NLA_EXACT_LEN_WARN,
 675                 .len = NL80211_KCK_LEN,
 676         },
 677         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 678                 .type = NLA_EXACT_LEN_WARN,
 679                 .len = NL80211_REPLAY_CTR_LEN
 680         },
 681 };
 682
 683 static const struct nla_policy
 684 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 685         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 686         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 687         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 688         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 689 };
 690
 691 static const struct nla_policy
 692 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 693         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 694                                                  .len = IEEE80211_MAX_SSID_LEN },
 695         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 696                 .type = NLA_EXACT_LEN_WARN,
 697                 .len = ETH_ALEN
 698         },
 699         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 700         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 701                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 702 };
 703
 704 static const struct nla_policy
 705 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 706         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 707         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 708 };
 709
 710 static const struct nla_policy
 711 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 712         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 713         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 714         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 715                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 716         },
 717 };
 718
 719 /* policy for NAN function attributes */
 720 static const struct nla_policy
 721 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 722         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 723         [NL80211_NAN_FUNC_SERVICE_ID] = {
 724                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 725         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 726         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 727         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 728         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 729         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 730         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 731                 .type = NLA_EXACT_LEN_WARN,
 732                 .len = ETH_ALEN
 733         },
 734         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 735         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 736         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 737                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 738         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 739         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 740         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 741         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 742         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 743 };
 744
 745 /* policy for Service Response Filter attributes */
 746 static const struct nla_policy
 747 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 748         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 749         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 750                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 751         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 752         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 753 };
 754
 755 /* policy for packet pattern attributes */
 756 static const struct nla_policy
 757 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 758         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 759         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 760         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 761 };
 762
 763 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 764                               struct cfg80211_registered_device **rdev,
 765                               struct wireless_dev **wdev)
 766 {
 767         int err;
 768
 769         if (!cb->args[0]) {
 770                 struct nlattr **attrbuf;
 771
 772                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 773                                   GFP_KERNEL);
 774                 if (!attrbuf)
 775                         return -ENOMEM;
 776
 777                 err = nlmsg_parse_deprecated(cb->nlh,
 778                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 779                                              attrbuf, nl80211_fam.maxattr,
 780                                              nl80211_policy, NULL);
 781                 if (err) {
 782                         kfree(attrbuf);
 783                         return err;
 784                 }
 785
 786                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 787                                                    attrbuf);
 788                 kfree(attrbuf);
 789                 if (IS_ERR(*wdev))
 790                         return PTR_ERR(*wdev);
 791                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 792                 /* 0 is the first index - add 1 to parse only once */
 793                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 794                 cb->args[1] = (*wdev)->identifier;
 795         } else {
 796                 /* subtract the 1 again here */
 797                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 798                 struct wireless_dev *tmp;
 799
 800                 if (!wiphy)
 801                         return -ENODEV;
 802                 *rdev = wiphy_to_rdev(wiphy);
 803                 *wdev = NULL;
 804
 805                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 806                         if (tmp->identifier == cb->args[1]) {
 807                                 *wdev = tmp;
 808                                 break;
 809                         }
 810                 }
 811
 812                 if (!*wdev)
 813                         return -ENODEV;
 814         }
 815
 816         return 0;
 817 }
 818
 819 /* message building helper */
 820 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 821                      int flags, u8 cmd)
 822 {
 823         /* since there is no private header just add the generic one */
 824         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 825 }
 826
 827 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 828                                      const struct ieee80211_reg_rule *rule)
 829 {
 830         int j;
 831         struct nlattr *nl_wmm_rules =
 832                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 833
 834         if (!nl_wmm_rules)
 835                 goto nla_put_failure;
 836
 837         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 838                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 839
 840                 if (!nl_wmm_rule)
 841                         goto nla_put_failure;
 842
 843                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 844                                 rule->wmm_rule.client[j].cw_min) ||
 845                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 846                                 rule->wmm_rule.client[j].cw_max) ||
 847                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 848                                rule->wmm_rule.client[j].aifsn) ||
 849                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 850                                 rule->wmm_rule.client[j].cot))
 851                         goto nla_put_failure;
 852
 853                 nla_nest_end(msg, nl_wmm_rule);
 854         }
 855         nla_nest_end(msg, nl_wmm_rules);
 856
 857         return 0;
 858
 859 nla_put_failure:
 860         return -ENOBUFS;
 861 }
 862
 863 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 864                                    struct ieee80211_channel *chan,
 865                                    bool large)
 866 {
 867         /* Some channels must be completely excluded from the
 868          * list to protect old user-space tools from breaking
 869          */
 870         if (!large && chan->flags &
 871             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 872                 return 0;
 873
 874         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 875                         chan->center_freq))
 876                 goto nla_put_failure;
 877
 878         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 879             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 880                 goto nla_put_failure;
 881         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 882                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 883                         goto nla_put_failure;
 884                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 885                         goto nla_put_failure;
 886         }
 887         if (chan->flags & IEEE80211_CHAN_RADAR) {
 888                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 889                         goto nla_put_failure;
 890                 if (large) {
 891                         u32 time;
 892
 893                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 894
 895                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 896                                         chan->dfs_state))
 897                                 goto nla_put_failure;
 898                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 899                                         time))
 900                                 goto nla_put_failure;
 901                         if (nla_put_u32(msg,
 902                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 903                                         chan->dfs_cac_ms))
 904                                 goto nla_put_failure;
 905                 }
 906         }
 907
 908         if (large) {
 909                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 910                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 911                         goto nla_put_failure;
 912                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 913                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 914                         goto nla_put_failure;
 915                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 916                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 917                         goto nla_put_failure;
 918                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 919                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 920                         goto nla_put_failure;
 921                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 922                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 923                         goto nla_put_failure;
 924                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 925                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 926                         goto nla_put_failure;
 927                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 928                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 929                         goto nla_put_failure;
 930                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 931                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 932                         goto nla_put_failure;
 933         }
 934
 935         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 936                         DBM_TO_MBM(chan->max_power)))
 937                 goto nla_put_failure;
 938
 939         if (large) {
 940                 const struct ieee80211_reg_rule *rule =
 941                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 942
 943                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 944                         if (nl80211_msg_put_wmm_rules(msg, rule))
 945                                 goto nla_put_failure;
 946                 }
 947         }
 948
 949         return 0;
 950
 951  nla_put_failure:
 952         return -ENOBUFS;
 953 }
 954
 955 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 956                                   struct cfg80211_txq_stats *txqstats,
 957                                   int attrtype)
 958 {
 959         struct nlattr *txqattr;
 960
 961 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 962         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 963             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 964                 return false;                                             \
 965         } while (0)
 966
 967         txqattr = nla_nest_start_noflag(msg, attrtype);
 968         if (!txqattr)
 969                 return false;
 970
 971         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 972         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 973         PUT_TXQVAL_U32(FLOWS, flows);
 974         PUT_TXQVAL_U32(DROPS, drops);
 975         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 976         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 977         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 978         PUT_TXQVAL_U32(COLLISIONS, collisions);
 979         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 980         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 981         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 982         nla_nest_end(msg, txqattr);
 983
 984 #undef PUT_TXQVAL_U32
 985         return true;
 986 }
 987
 988 /* netlink command implementations */
 989
 990 struct key_parse {
 991         struct key_params p;
 992         int idx;
 993         int type;
 994         bool def, defmgmt;
 995         bool def_uni, def_multi;
 996 };
 997
 998 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 999                                  struct key_parse *k)
1000 {
1001         struct nlattr *tb[NL80211_KEY_MAX + 1];
1002         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1003                                               nl80211_key_policy,
1004                                               info->extack);
1005         if (err)
1006                 return err;
1007
1008         k->def = !!tb[NL80211_KEY_DEFAULT];
1009         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1010
1011         if (k->def) {
1012                 k->def_uni = true;
1013                 k->def_multi = true;
1014         }
1015         if (k->defmgmt)
1016                 k->def_multi = true;
1017
1018         if (tb[NL80211_KEY_IDX])
1019                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1020
1021         if (tb[NL80211_KEY_DATA]) {
1022                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1023                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1024         }
1025
1026         if (tb[NL80211_KEY_SEQ]) {
1027                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1028                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1029         }
1030
1031         if (tb[NL80211_KEY_CIPHER])
1032                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1033
1034         if (tb[NL80211_KEY_TYPE])
1035                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1036
1037         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1038                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1039
1040                 err = nla_parse_nested_deprecated(kdt,
1041                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1042                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1043                                                   nl80211_key_default_policy,
1044                                                   info->extack);
1045                 if (err)
1046                         return err;
1047
1048                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1049                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1050         }
1051
1052         if (tb[NL80211_KEY_MODE])
1053                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1054
1055         return 0;
1056 }
1057
1058 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1059 {
1060         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1061                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1062                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1063         }
1064
1065         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1066                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1067                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1068         }
1069
1070         if (info->attrs[NL80211_ATTR_KEY_IDX])
1071                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1072
1073         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1074                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1075
1076         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1077         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1078
1079         if (k->def) {
1080                 k->def_uni = true;
1081                 k->def_multi = true;
1082         }
1083         if (k->defmgmt)
1084                 k->def_multi = true;
1085
1086         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1087                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1088
1089         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1090                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1091                 int err = nla_parse_nested_deprecated(kdt,
1092                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1093                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1094                                                       nl80211_key_default_policy,
1095                                                       info->extack);
1096                 if (err)
1097                         return err;
1098
1099                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1100                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1101         }
1102
1103         return 0;
1104 }
1105
1106 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1107 {
1108         int err;
1109
1110         memset(k, 0, sizeof(*k));
1111         k->idx = -1;
1112         k->type = -1;
1113
1114         if (info->attrs[NL80211_ATTR_KEY])
1115                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1116         else
1117                 err = nl80211_parse_key_old(info, k);
1118
1119         if (err)
1120                 return err;
1121
1122         if (k->def && k->defmgmt) {
1123                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1124                 return -EINVAL;
1125         }
1126
1127         if (k->defmgmt) {
1128                 if (k->def_uni || !k->def_multi) {
1129                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1130                         return -EINVAL;
1131                 }
1132         }
1133
1134         if (k->idx != -1) {
1135                 if (k->defmgmt) {
1136                         if (k->idx < 4 || k->idx > 5) {
1137                                 GENL_SET_ERR_MSG(info,
1138                                                  "defmgmt key idx not 4 or 5");
1139                                 return -EINVAL;
1140                         }
1141                 } else if (k->def) {
1142                         if (k->idx < 0 || k->idx > 3) {
1143                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1144                                 return -EINVAL;
1145                         }
1146                 } else {
1147                         if (k->idx < 0 || k->idx > 5) {
1148                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1149                                 return -EINVAL;
1150                         }
1151                 }
1152         }
1153
1154         return 0;
1155 }
1156
1157 static struct cfg80211_cached_keys *
1158 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1159                        struct genl_info *info, bool *no_ht)
1160 {
1161         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1162         struct key_parse parse;
1163         struct nlattr *key;
1164         struct cfg80211_cached_keys *result;
1165         int rem, err, def = 0;
1166         bool have_key = false;
1167
1168         nla_for_each_nested(key, keys, rem) {
1169                 have_key = true;
1170                 break;
1171         }
1172
1173         if (!have_key)
1174                 return NULL;
1175
1176         result = kzalloc(sizeof(*result), GFP_KERNEL);
1177         if (!result)
1178                 return ERR_PTR(-ENOMEM);
1179
1180         result->def = -1;
1181
1182         nla_for_each_nested(key, keys, rem) {
1183                 memset(&parse, 0, sizeof(parse));
1184                 parse.idx = -1;
1185
1186                 err = nl80211_parse_key_new(info, key, &parse);
1187                 if (err)
1188                         goto error;
1189                 err = -EINVAL;
1190                 if (!parse.p.key)
1191                         goto error;
1192                 if (parse.idx < 0 || parse.idx > 3) {
1193                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1194                         goto error;
1195                 }
1196                 if (parse.def) {
1197                         if (def) {
1198                                 GENL_SET_ERR_MSG(info,
1199                                                  "only one key can be default");
1200                                 goto error;
1201                         }
1202                         def = 1;
1203                         result->def = parse.idx;
1204                         if (!parse.def_uni || !parse.def_multi)
1205                                 goto error;
1206                 } else if (parse.defmgmt)
1207                         goto error;
1208                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1209                                                      parse.idx, false, NULL);
1210                 if (err)
1211                         goto error;
1212                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1213                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1214                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1215                         err = -EINVAL;
1216                         goto error;
1217                 }
1218                 result->params[parse.idx].cipher = parse.p.cipher;
1219                 result->params[parse.idx].key_len = parse.p.key_len;
1220                 result->params[parse.idx].key = result->data[parse.idx];
1221                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1222
1223                 /* must be WEP key if we got here */
1224                 if (no_ht)
1225                         *no_ht = true;
1226         }
1227
1228         if (result->def < 0) {
1229                 err = -EINVAL;
1230                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1231                 goto error;
1232         }
1233
1234         return result;
1235  error:
1236         kfree(result);
1237         return ERR_PTR(err);
1238 }
1239
1240 static int nl80211_key_allowed(struct wireless_dev *wdev)
1241 {
1242         ASSERT_WDEV_LOCK(wdev);
1243
1244         switch (wdev->iftype) {
1245         case NL80211_IFTYPE_AP:
1246         case NL80211_IFTYPE_AP_VLAN:
1247         case NL80211_IFTYPE_P2P_GO:
1248         case NL80211_IFTYPE_MESH_POINT:
1249                 break;
1250         case NL80211_IFTYPE_ADHOC:
1251         case NL80211_IFTYPE_STATION:
1252         case NL80211_IFTYPE_P2P_CLIENT:
1253                 if (!wdev->current_bss)
1254                         return -ENOLINK;
1255                 break;
1256         case NL80211_IFTYPE_UNSPECIFIED:
1257         case NL80211_IFTYPE_OCB:
1258         case NL80211_IFTYPE_MONITOR:
1259         case NL80211_IFTYPE_NAN:
1260         case NL80211_IFTYPE_P2P_DEVICE:
1261         case NL80211_IFTYPE_WDS:
1262         case NUM_NL80211_IFTYPES:
1263                 return -EINVAL;
1264         }
1265
1266         return 0;
1267 }
1268
1269 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1270                                                         struct nlattr *tb)
1271 {
1272         struct ieee80211_channel *chan;
1273
1274         if (tb == NULL)
1275                 return NULL;
1276         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1277         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1278                 return NULL;
1279         return chan;
1280 }
1281
1282 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1283 {
1284         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1285         int i;
1286
1287         if (!nl_modes)
1288                 goto nla_put_failure;
1289
1290         i = 0;
1291         while (ifmodes) {
1292                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1293                         goto nla_put_failure;
1294                 ifmodes >>= 1;
1295                 i++;
1296         }
1297
1298         nla_nest_end(msg, nl_modes);
1299         return 0;
1300
1301 nla_put_failure:
1302         return -ENOBUFS;
1303 }
1304
1305 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1306                                           struct sk_buff *msg,
1307                                           bool large)
1308 {
1309         struct nlattr *nl_combis;
1310         int i, j;
1311
1312         nl_combis = nla_nest_start_noflag(msg,
1313                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1314         if (!nl_combis)
1315                 goto nla_put_failure;
1316
1317         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1318                 const struct ieee80211_iface_combination *c;
1319                 struct nlattr *nl_combi, *nl_limits;
1320
1321                 c = &wiphy->iface_combinations[i];
1322
1323                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1324                 if (!nl_combi)
1325                         goto nla_put_failure;
1326
1327                 nl_limits = nla_nest_start_noflag(msg,
1328                                                   NL80211_IFACE_COMB_LIMITS);
1329                 if (!nl_limits)
1330                         goto nla_put_failure;
1331
1332                 for (j = 0; j < c->n_limits; j++) {
1333                         struct nlattr *nl_limit;
1334
1335                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1336                         if (!nl_limit)
1337                                 goto nla_put_failure;
1338                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1339                                         c->limits[j].max))
1340                                 goto nla_put_failure;
1341                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1342                                                 c->limits[j].types))
1343                                 goto nla_put_failure;
1344                         nla_nest_end(msg, nl_limit);
1345                 }
1346
1347                 nla_nest_end(msg, nl_limits);
1348
1349                 if (c->beacon_int_infra_match &&
1350                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1351                         goto nla_put_failure;
1352                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1353                                 c->num_different_channels) ||
1354                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1355                                 c->max_interfaces))
1356                         goto nla_put_failure;
1357                 if (large &&
1358                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1359                                 c->radar_detect_widths) ||
1360                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1361                                 c->radar_detect_regions)))
1362                         goto nla_put_failure;
1363                 if (c->beacon_int_min_gcd &&
1364                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1365                                 c->beacon_int_min_gcd))
1366                         goto nla_put_failure;
1367
1368                 nla_nest_end(msg, nl_combi);
1369         }
1370
1371         nla_nest_end(msg, nl_combis);
1372
1373         return 0;
1374 nla_put_failure:
1375         return -ENOBUFS;
1376 }
1377
1378 #ifdef CONFIG_PM
1379 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1380                                         struct sk_buff *msg)
1381 {
1382         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1383         struct nlattr *nl_tcp;
1384
1385         if (!tcp)
1386                 return 0;
1387
1388         nl_tcp = nla_nest_start_noflag(msg,
1389                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1390         if (!nl_tcp)
1391                 return -ENOBUFS;
1392
1393         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1394                         tcp->data_payload_max))
1395                 return -ENOBUFS;
1396
1397         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1398                         tcp->data_payload_max))
1399                 return -ENOBUFS;
1400
1401         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1402                 return -ENOBUFS;
1403
1404         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1405                                 sizeof(*tcp->tok), tcp->tok))
1406                 return -ENOBUFS;
1407
1408         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1409                         tcp->data_interval_max))
1410                 return -ENOBUFS;
1411
1412         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1413                         tcp->wake_payload_max))
1414                 return -ENOBUFS;
1415
1416         nla_nest_end(msg, nl_tcp);
1417         return 0;
1418 }
1419
1420 static int nl80211_send_wowlan(struct sk_buff *msg,
1421                                struct cfg80211_registered_device *rdev,
1422                                bool large)
1423 {
1424         struct nlattr *nl_wowlan;
1425
1426         if (!rdev->wiphy.wowlan)
1427                 return 0;
1428
1429         nl_wowlan = nla_nest_start_noflag(msg,
1430                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1431         if (!nl_wowlan)
1432                 return -ENOBUFS;
1433
1434         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1435              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1436             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1437              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1438             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1439              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1440             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1441              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1442             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1443              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1444             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1445              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1446             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1447              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1448             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1449              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1450                 return -ENOBUFS;
1451
1452         if (rdev->wiphy.wowlan->n_patterns) {
1453                 struct nl80211_pattern_support pat = {
1454                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1455                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1456                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1457                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1458                 };
1459
1460                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1461                             sizeof(pat), &pat))
1462                         return -ENOBUFS;
1463         }
1464
1465         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1466             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1467                         rdev->wiphy.wowlan->max_nd_match_sets))
1468                 return -ENOBUFS;
1469
1470         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1471                 return -ENOBUFS;
1472
1473         nla_nest_end(msg, nl_wowlan);
1474
1475         return 0;
1476 }
1477 #endif
1478
1479 static int nl80211_send_coalesce(struct sk_buff *msg,
1480                                  struct cfg80211_registered_device *rdev)
1481 {
1482         struct nl80211_coalesce_rule_support rule;
1483
1484         if (!rdev->wiphy.coalesce)
1485                 return 0;
1486
1487         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1488         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1489         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1490         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1491         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1492         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1493
1494         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1495                 return -ENOBUFS;
1496
1497         return 0;
1498 }
1499
1500 static int
1501 nl80211_send_iftype_data(struct sk_buff *msg,
1502                          const struct ieee80211_sband_iftype_data *iftdata)
1503 {
1504         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1505
1506         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1507                                 iftdata->types_mask))
1508                 return -ENOBUFS;
1509
1510         if (he_cap->has_he) {
1511                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1512                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1513                             he_cap->he_cap_elem.mac_cap_info) ||
1514                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1515                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1516                             he_cap->he_cap_elem.phy_cap_info) ||
1517                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1518                             sizeof(he_cap->he_mcs_nss_supp),
1519                             &he_cap->he_mcs_nss_supp) ||
1520                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1521                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1522                         return -ENOBUFS;
1523         }
1524
1525         return 0;
1526 }
1527
1528 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1529                                       struct ieee80211_supported_band *sband)
1530 {
1531         struct nlattr *nl_rates, *nl_rate;
1532         struct ieee80211_rate *rate;
1533         int i;
1534
1535         /* add HT info */
1536         if (sband->ht_cap.ht_supported &&
1537             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1538                      sizeof(sband->ht_cap.mcs),
1539                      &sband->ht_cap.mcs) ||
1540              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1541                          sband->ht_cap.cap) ||
1542              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1543                         sband->ht_cap.ampdu_factor) ||
1544              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1545                         sband->ht_cap.ampdu_density)))
1546                 return -ENOBUFS;
1547
1548         /* add VHT info */
1549         if (sband->vht_cap.vht_supported &&
1550             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1551                      sizeof(sband->vht_cap.vht_mcs),
1552                      &sband->vht_cap.vht_mcs) ||
1553              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1554                          sband->vht_cap.cap)))
1555                 return -ENOBUFS;
1556
1557         if (sband->n_iftype_data) {
1558                 struct nlattr *nl_iftype_data =
1559                         nla_nest_start_noflag(msg,
1560                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1561                 int err;
1562
1563                 if (!nl_iftype_data)
1564                         return -ENOBUFS;
1565
1566                 for (i = 0; i < sband->n_iftype_data; i++) {
1567                         struct nlattr *iftdata;
1568
1569                         iftdata = nla_nest_start_noflag(msg, i + 1);
1570                         if (!iftdata)
1571                                 return -ENOBUFS;
1572
1573                         err = nl80211_send_iftype_data(msg,
1574                                                        &sband->iftype_data[i]);
1575                         if (err)
1576                                 return err;
1577
1578                         nla_nest_end(msg, iftdata);
1579                 }
1580
1581                 nla_nest_end(msg, nl_iftype_data);
1582         }
1583
1584         /* add EDMG info */
1585         if (sband->edmg_cap.channels &&
1586             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1587                        sband->edmg_cap.channels) ||
1588             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1589                        sband->edmg_cap.bw_config)))
1590
1591                 return -ENOBUFS;
1592
1593         /* add bitrates */
1594         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1595         if (!nl_rates)
1596                 return -ENOBUFS;
1597
1598         for (i = 0; i < sband->n_bitrates; i++) {
1599                 nl_rate = nla_nest_start_noflag(msg, i);
1600                 if (!nl_rate)
1601                         return -ENOBUFS;
1602
1603                 rate = &sband->bitrates[i];
1604                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1605                                 rate->bitrate))
1606                         return -ENOBUFS;
1607                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1608                     nla_put_flag(msg,
1609                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1610                         return -ENOBUFS;
1611
1612                 nla_nest_end(msg, nl_rate);
1613         }
1614
1615         nla_nest_end(msg, nl_rates);
1616
1617         return 0;
1618 }
1619
1620 static int
1621 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1622                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1623 {
1624         u16 stypes;
1625         struct nlattr *nl_ftypes, *nl_ifs;
1626         enum nl80211_iftype ift;
1627         int i;
1628
1629         if (!mgmt_stypes)
1630                 return 0;
1631
1632         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1633         if (!nl_ifs)
1634                 return -ENOBUFS;
1635
1636         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1637                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1638                 if (!nl_ftypes)
1639                         return -ENOBUFS;
1640                 i = 0;
1641                 stypes = mgmt_stypes[ift].tx;
1642                 while (stypes) {
1643                         if ((stypes & 1) &&
1644                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1645                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1646                                 return -ENOBUFS;
1647                         stypes >>= 1;
1648                         i++;
1649                 }
1650                 nla_nest_end(msg, nl_ftypes);
1651         }
1652
1653         nla_nest_end(msg, nl_ifs);
1654
1655         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1656         if (!nl_ifs)
1657                 return -ENOBUFS;
1658
1659         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1660                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1661                 if (!nl_ftypes)
1662                         return -ENOBUFS;
1663                 i = 0;
1664                 stypes = mgmt_stypes[ift].rx;
1665                 while (stypes) {
1666                         if ((stypes & 1) &&
1667                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1668                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1669                                 return -ENOBUFS;
1670                         stypes >>= 1;
1671                         i++;
1672                 }
1673                 nla_nest_end(msg, nl_ftypes);
1674         }
1675         nla_nest_end(msg, nl_ifs);
1676
1677         return 0;
1678 }
1679
1680 #define CMD(op, n)                                                      \
1681          do {                                                           \
1682                 if (rdev->ops->op) {                                    \
1683                         i++;                                            \
1684                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1685                                 goto nla_put_failure;                   \
1686                 }                                                       \
1687         } while (0)
1688
1689 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1690                                         struct sk_buff *msg)
1691 {
1692         int i = 0;
1693
1694         /*
1695          * do *NOT* add anything into this function, new things need to be
1696          * advertised only to new versions of userspace that can deal with
1697          * the split (and they can't possibly care about new features...
1698          */
1699         CMD(add_virtual_intf, NEW_INTERFACE);
1700         CMD(change_virtual_intf, SET_INTERFACE);
1701         CMD(add_key, NEW_KEY);
1702         CMD(start_ap, START_AP);
1703         CMD(add_station, NEW_STATION);
1704         CMD(add_mpath, NEW_MPATH);
1705         CMD(update_mesh_config, SET_MESH_CONFIG);
1706         CMD(change_bss, SET_BSS);
1707         CMD(auth, AUTHENTICATE);
1708         CMD(assoc, ASSOCIATE);
1709         CMD(deauth, DEAUTHENTICATE);
1710         CMD(disassoc, DISASSOCIATE);
1711         CMD(join_ibss, JOIN_IBSS);
1712         CMD(join_mesh, JOIN_MESH);
1713         CMD(set_pmksa, SET_PMKSA);
1714         CMD(del_pmksa, DEL_PMKSA);
1715         CMD(flush_pmksa, FLUSH_PMKSA);
1716         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1717                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1718         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1719         CMD(mgmt_tx, FRAME);
1720         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1721         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1722                 i++;
1723                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1724                         goto nla_put_failure;
1725         }
1726         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1727             rdev->ops->join_mesh) {
1728                 i++;
1729                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1730                         goto nla_put_failure;
1731         }
1732         CMD(set_wds_peer, SET_WDS_PEER);
1733         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1734                 CMD(tdls_mgmt, TDLS_MGMT);
1735                 CMD(tdls_oper, TDLS_OPER);
1736         }
1737         if (rdev->wiphy.max_sched_scan_reqs)
1738                 CMD(sched_scan_start, START_SCHED_SCAN);
1739         CMD(probe_client, PROBE_CLIENT);
1740         CMD(set_noack_map, SET_NOACK_MAP);
1741         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1742                 i++;
1743                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1744                         goto nla_put_failure;
1745         }
1746         CMD(start_p2p_device, START_P2P_DEVICE);
1747         CMD(set_mcast_rate, SET_MCAST_RATE);
1748 #ifdef CONFIG_NL80211_TESTMODE
1749         CMD(testmode_cmd, TESTMODE);
1750 #endif
1751
1752         if (rdev->ops->connect || rdev->ops->auth) {
1753                 i++;
1754                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1755                         goto nla_put_failure;
1756         }
1757
1758         if (rdev->ops->disconnect || rdev->ops->deauth) {
1759                 i++;
1760                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1761                         goto nla_put_failure;
1762         }
1763
1764         return i;
1765  nla_put_failure:
1766         return -ENOBUFS;
1767 }
1768
1769 static int
1770 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1771                            struct sk_buff *msg)
1772 {
1773         struct nlattr *ftm;
1774
1775         if (!cap->ftm.supported)
1776                 return 0;
1777
1778         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1779         if (!ftm)
1780                 return -ENOBUFS;
1781
1782         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1783                 return -ENOBUFS;
1784         if (cap->ftm.non_asap &&
1785             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1786                 return -ENOBUFS;
1787         if (cap->ftm.request_lci &&
1788             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1789                 return -ENOBUFS;
1790         if (cap->ftm.request_civicloc &&
1791             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1792                 return -ENOBUFS;
1793         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1794                         cap->ftm.preambles))
1795                 return -ENOBUFS;
1796         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1797                         cap->ftm.bandwidths))
1798                 return -ENOBUFS;
1799         if (cap->ftm.max_bursts_exponent >= 0 &&
1800             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1801                         cap->ftm.max_bursts_exponent))
1802                 return -ENOBUFS;
1803         if (cap->ftm.max_ftms_per_burst &&
1804             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1805                         cap->ftm.max_ftms_per_burst))
1806                 return -ENOBUFS;
1807
1808         nla_nest_end(msg, ftm);
1809         return 0;
1810 }
1811
1812 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1813                                   struct sk_buff *msg)
1814 {
1815         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1816         struct nlattr *pmsr, *caps;
1817
1818         if (!cap)
1819                 return 0;
1820
1821         /*
1822          * we don't need to clean up anything here since the caller
1823          * will genlmsg_cancel() if we fail
1824          */
1825
1826         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1827         if (!pmsr)
1828                 return -ENOBUFS;
1829
1830         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1831                 return -ENOBUFS;
1832
1833         if (cap->report_ap_tsf &&
1834             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1835                 return -ENOBUFS;
1836
1837         if (cap->randomize_mac_addr &&
1838             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1839                 return -ENOBUFS;
1840
1841         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1842         if (!caps)
1843                 return -ENOBUFS;
1844
1845         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1846                 return -ENOBUFS;
1847
1848         nla_nest_end(msg, caps);
1849         nla_nest_end(msg, pmsr);
1850
1851         return 0;
1852 }
1853
1854 struct nl80211_dump_wiphy_state {
1855         s64 filter_wiphy;
1856         long start;
1857         long split_start, band_start, chan_start, capa_start;
1858         bool split;
1859 };
1860
1861 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1862                               enum nl80211_commands cmd,
1863                               struct sk_buff *msg, u32 portid, u32 seq,
1864                               int flags, struct nl80211_dump_wiphy_state *state)
1865 {
1866         void *hdr;
1867         struct nlattr *nl_bands, *nl_band;
1868         struct nlattr *nl_freqs, *nl_freq;
1869         struct nlattr *nl_cmds;
1870         enum nl80211_band band;
1871         struct ieee80211_channel *chan;
1872         int i;
1873         const struct ieee80211_txrx_stypes *mgmt_stypes =
1874                                 rdev->wiphy.mgmt_stypes;
1875         u32 features;
1876
1877         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1878         if (!hdr)
1879                 return -ENOBUFS;
1880
1881         if (WARN_ON(!state))
1882                 return -EINVAL;
1883
1884         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1885             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1886                            wiphy_name(&rdev->wiphy)) ||
1887             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1888                         cfg80211_rdev_list_generation))
1889                 goto nla_put_failure;
1890
1891         if (cmd != NL80211_CMD_NEW_WIPHY)
1892                 goto finish;
1893
1894         switch (state->split_start) {
1895         case 0:
1896                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1897                                rdev->wiphy.retry_short) ||
1898                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1899                                rdev->wiphy.retry_long) ||
1900                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1901                                 rdev->wiphy.frag_threshold) ||
1902                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1903                                 rdev->wiphy.rts_threshold) ||
1904                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1905                                rdev->wiphy.coverage_class) ||
1906                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1907                                rdev->wiphy.max_scan_ssids) ||
1908                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1909                                rdev->wiphy.max_sched_scan_ssids) ||
1910                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1911                                 rdev->wiphy.max_scan_ie_len) ||
1912                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1913                                 rdev->wiphy.max_sched_scan_ie_len) ||
1914                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1915                                rdev->wiphy.max_match_sets) ||
1916                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1917                                 rdev->wiphy.max_sched_scan_plans) ||
1918                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1919                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1920                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1921                                 rdev->wiphy.max_sched_scan_plan_iterations))
1922                         goto nla_put_failure;
1923
1924                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1925                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1926                         goto nla_put_failure;
1927                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1928                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1929                         goto nla_put_failure;
1930                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1931                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1932                         goto nla_put_failure;
1933                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1934                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1935                         goto nla_put_failure;
1936                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1937                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1938                         goto nla_put_failure;
1939                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1940                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1941                         goto nla_put_failure;
1942                 state->split_start++;
1943                 if (state->split)
1944                         break;
1945                 /* fall through */
1946         case 1:
1947                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1948                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1949                             rdev->wiphy.cipher_suites))
1950                         goto nla_put_failure;
1951
1952                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1953                                rdev->wiphy.max_num_pmkids))
1954                         goto nla_put_failure;
1955
1956                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1957                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1958                         goto nla_put_failure;
1959
1960                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1961                                 rdev->wiphy.available_antennas_tx) ||
1962                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1963                                 rdev->wiphy.available_antennas_rx))
1964                         goto nla_put_failure;
1965
1966                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1967                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1968                                 rdev->wiphy.probe_resp_offload))
1969                         goto nla_put_failure;
1970
1971                 if ((rdev->wiphy.available_antennas_tx ||
1972                      rdev->wiphy.available_antennas_rx) &&
1973                     rdev->ops->get_antenna) {
1974                         u32 tx_ant = 0, rx_ant = 0;
1975                         int res;
1976
1977                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1978                         if (!res) {
1979                                 if (nla_put_u32(msg,
1980                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1981                                                 tx_ant) ||
1982                                     nla_put_u32(msg,
1983                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1984                                                 rx_ant))
1985                                         goto nla_put_failure;
1986                         }
1987                 }
1988
1989                 state->split_start++;
1990                 if (state->split)
1991                         break;
1992                 /* fall through */
1993         case 2:
1994                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1995                                         rdev->wiphy.interface_modes))
1996                                 goto nla_put_failure;
1997                 state->split_start++;
1998                 if (state->split)
1999                         break;
2000                 /* fall through */
2001         case 3:
2002                 nl_bands = nla_nest_start_noflag(msg,
2003                                                  NL80211_ATTR_WIPHY_BANDS);
2004                 if (!nl_bands)
2005                         goto nla_put_failure;
2006
2007                 for (band = state->band_start;
2008                      band < NUM_NL80211_BANDS; band++) {
2009                         struct ieee80211_supported_band *sband;
2010
2011                         sband = rdev->wiphy.bands[band];
2012
2013                         if (!sband)
2014                                 continue;
2015
2016                         nl_band = nla_nest_start_noflag(msg, band);
2017                         if (!nl_band)
2018                                 goto nla_put_failure;
2019
2020                         switch (state->chan_start) {
2021                         case 0:
2022                                 if (nl80211_send_band_rateinfo(msg, sband))
2023                                         goto nla_put_failure;
2024                                 state->chan_start++;
2025                                 if (state->split)
2026                                         break;
2027                                 /* fall through */
2028                         default:
2029                                 /* add frequencies */
2030                                 nl_freqs = nla_nest_start_noflag(msg,
2031                                                                  NL80211_BAND_ATTR_FREQS);
2032                                 if (!nl_freqs)
2033                                         goto nla_put_failure;
2034
2035                                 for (i = state->chan_start - 1;
2036                                      i < sband->n_channels;
2037                                      i++) {
2038                                         nl_freq = nla_nest_start_noflag(msg,
2039                                                                         i);
2040                                         if (!nl_freq)
2041                                                 goto nla_put_failure;
2042
2043                                         chan = &sband->channels[i];
2044
2045                                         if (nl80211_msg_put_channel(
2046                                                         msg, &rdev->wiphy, chan,
2047                                                         state->split))
2048                                                 goto nla_put_failure;
2049
2050                                         nla_nest_end(msg, nl_freq);
2051                                         if (state->split)
2052                                                 break;
2053                                 }
2054                                 if (i < sband->n_channels)
2055                                         state->chan_start = i + 2;
2056                                 else
2057                                         state->chan_start = 0;
2058                                 nla_nest_end(msg, nl_freqs);
2059                         }
2060
2061                         nla_nest_end(msg, nl_band);
2062
2063                         if (state->split) {
2064                                 /* start again here */
2065                                 if (state->chan_start)
2066                                         band--;
2067                                 break;
2068                         }
2069                 }
2070                 nla_nest_end(msg, nl_bands);
2071
2072                 if (band < NUM_NL80211_BANDS)
2073                         state->band_start = band + 1;
2074                 else
2075                         state->band_start = 0;
2076
2077                 /* if bands & channels are done, continue outside */
2078                 if (state->band_start == 0 && state->chan_start == 0)
2079                         state->split_start++;
2080                 if (state->split)
2081                         break;
2082                 /* fall through */
2083         case 4:
2084                 nl_cmds = nla_nest_start_noflag(msg,
2085                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2086                 if (!nl_cmds)
2087                         goto nla_put_failure;
2088
2089                 i = nl80211_add_commands_unsplit(rdev, msg);
2090                 if (i < 0)
2091                         goto nla_put_failure;
2092                 if (state->split) {
2093                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2094                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2095                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2096                                 CMD(channel_switch, CHANNEL_SWITCH);
2097                         CMD(set_qos_map, SET_QOS_MAP);
2098                         if (rdev->wiphy.features &
2099                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2100                                 CMD(add_tx_ts, ADD_TX_TS);
2101                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2102                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2103                         CMD(update_ft_ies, UPDATE_FT_IES);
2104                 }
2105 #undef CMD
2106
2107                 nla_nest_end(msg, nl_cmds);
2108                 state->split_start++;
2109                 if (state->split)
2110                         break;
2111                 /* fall through */
2112         case 5:
2113                 if (rdev->ops->remain_on_channel &&
2114                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2115                     nla_put_u32(msg,
2116                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2117                                 rdev->wiphy.max_remain_on_channel_duration))
2118                         goto nla_put_failure;
2119
2120                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2121                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2122                         goto nla_put_failure;
2123
2124                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2125                         goto nla_put_failure;
2126                 state->split_start++;
2127                 if (state->split)
2128                         break;
2129                 /* fall through */
2130         case 6:
2131 #ifdef CONFIG_PM
2132                 if (nl80211_send_wowlan(msg, rdev, state->split))
2133                         goto nla_put_failure;
2134                 state->split_start++;
2135                 if (state->split)
2136                         break;
2137 #else
2138                 state->split_start++;
2139 #endif
2140                 /* fall through */
2141         case 7:
2142                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2143                                         rdev->wiphy.software_iftypes))
2144                         goto nla_put_failure;
2145
2146                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2147                                                    state->split))
2148                         goto nla_put_failure;
2149
2150                 state->split_start++;
2151                 if (state->split)
2152                         break;
2153                 /* fall through */
2154         case 8:
2155                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2156                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2157                                 rdev->wiphy.ap_sme_capa))
2158                         goto nla_put_failure;
2159
2160                 features = rdev->wiphy.features;
2161                 /*
2162                  * We can only add the per-channel limit information if the
2163                  * dump is split, otherwise it makes it too big. Therefore
2164                  * only advertise it in that case.
2165                  */
2166                 if (state->split)
2167                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2168                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2169                         goto nla_put_failure;
2170
2171                 if (rdev->wiphy.ht_capa_mod_mask &&
2172                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2173                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2174                             rdev->wiphy.ht_capa_mod_mask))
2175                         goto nla_put_failure;
2176
2177                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2178                     rdev->wiphy.max_acl_mac_addrs &&
2179                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2180                                 rdev->wiphy.max_acl_mac_addrs))
2181                         goto nla_put_failure;
2182
2183                 /*
2184                  * Any information below this point is only available to
2185                  * applications that can deal with it being split. This
2186                  * helps ensure that newly added capabilities don't break
2187                  * older tools by overrunning their buffers.
2188                  *
2189                  * We still increment split_start so that in the split
2190                  * case we'll continue with more data in the next round,
2191                  * but break unconditionally so unsplit data stops here.
2192                  */
2193                 state->split_start++;
2194                 break;
2195         case 9:
2196                 if (rdev->wiphy.extended_capabilities &&
2197                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2198                              rdev->wiphy.extended_capabilities_len,
2199                              rdev->wiphy.extended_capabilities) ||
2200                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2201                              rdev->wiphy.extended_capabilities_len,
2202                              rdev->wiphy.extended_capabilities_mask)))
2203                         goto nla_put_failure;
2204
2205                 if (rdev->wiphy.vht_capa_mod_mask &&
2206                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2207                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2208                             rdev->wiphy.vht_capa_mod_mask))
2209                         goto nla_put_failure;
2210
2211                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2212                             rdev->wiphy.perm_addr))
2213                         goto nla_put_failure;
2214
2215                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2216                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2217                             rdev->wiphy.addr_mask))
2218                         goto nla_put_failure;
2219
2220                 if (rdev->wiphy.n_addresses > 1) {
2221                         void *attr;
2222
2223                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2224                         if (!attr)
2225                                 goto nla_put_failure;
2226
2227                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2228                                 if (nla_put(msg, i + 1, ETH_ALEN,
2229                                             rdev->wiphy.addresses[i].addr))
2230                                         goto nla_put_failure;
2231
2232                         nla_nest_end(msg, attr);
2233                 }
2234
2235                 state->split_start++;
2236                 break;
2237         case 10:
2238                 if (nl80211_send_coalesce(msg, rdev))
2239                         goto nla_put_failure;
2240
2241                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2242                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2243                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2244                         goto nla_put_failure;
2245
2246                 if (rdev->wiphy.max_ap_assoc_sta &&
2247                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2248                                 rdev->wiphy.max_ap_assoc_sta))
2249                         goto nla_put_failure;
2250
2251                 state->split_start++;
2252                 break;
2253         case 11:
2254                 if (rdev->wiphy.n_vendor_commands) {
2255                         const struct nl80211_vendor_cmd_info *info;
2256                         struct nlattr *nested;
2257
2258                         nested = nla_nest_start_noflag(msg,
2259                                                        NL80211_ATTR_VENDOR_DATA);
2260                         if (!nested)
2261                                 goto nla_put_failure;
2262
2263                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2264                                 info = &rdev->wiphy.vendor_commands[i].info;
2265                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2266                                         goto nla_put_failure;
2267                         }
2268                         nla_nest_end(msg, nested);
2269                 }
2270
2271                 if (rdev->wiphy.n_vendor_events) {
2272                         const struct nl80211_vendor_cmd_info *info;
2273                         struct nlattr *nested;
2274
2275                         nested = nla_nest_start_noflag(msg,
2276                                                        NL80211_ATTR_VENDOR_EVENTS);
2277                         if (!nested)
2278                                 goto nla_put_failure;
2279
2280                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2281                                 info = &rdev->wiphy.vendor_events[i];
2282                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2283                                         goto nla_put_failure;
2284                         }
2285                         nla_nest_end(msg, nested);
2286                 }
2287                 state->split_start++;
2288                 break;
2289         case 12:
2290                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2291                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2292                                rdev->wiphy.max_num_csa_counters))
2293                         goto nla_put_failure;
2294
2295                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2296                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2297                         goto nla_put_failure;
2298
2299                 if (rdev->wiphy.max_sched_scan_reqs &&
2300                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2301                                 rdev->wiphy.max_sched_scan_reqs))
2302                         goto nla_put_failure;
2303
2304                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2305                             sizeof(rdev->wiphy.ext_features),
2306                             rdev->wiphy.ext_features))
2307                         goto nla_put_failure;
2308
2309                 if (rdev->wiphy.bss_select_support) {
2310                         struct nlattr *nested;
2311                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2312
2313                         nested = nla_nest_start_noflag(msg,
2314                                                        NL80211_ATTR_BSS_SELECT);
2315                         if (!nested)
2316                                 goto nla_put_failure;
2317
2318                         i = 0;
2319                         while (bss_select_support) {
2320                                 if ((bss_select_support & 1) &&
2321                                     nla_put_flag(msg, i))
2322                                         goto nla_put_failure;
2323                                 i++;
2324                                 bss_select_support >>= 1;
2325                         }
2326                         nla_nest_end(msg, nested);
2327                 }
2328
2329                 state->split_start++;
2330                 break;
2331         case 13:
2332                 if (rdev->wiphy.num_iftype_ext_capab &&
2333                     rdev->wiphy.iftype_ext_capab) {
2334                         struct nlattr *nested_ext_capab, *nested;
2335
2336                         nested = nla_nest_start_noflag(msg,
2337                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2338                         if (!nested)
2339                                 goto nla_put_failure;
2340
2341                         for (i = state->capa_start;
2342                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2343                                 const struct wiphy_iftype_ext_capab *capab;
2344
2345                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2346
2347                                 nested_ext_capab = nla_nest_start_noflag(msg,
2348                                                                          i);
2349                                 if (!nested_ext_capab ||
2350                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2351                                                 capab->iftype) ||
2352                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2353                                             capab->extended_capabilities_len,
2354                                             capab->extended_capabilities) ||
2355                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2356                                             capab->extended_capabilities_len,
2357                                             capab->extended_capabilities_mask))
2358                                         goto nla_put_failure;
2359
2360                                 nla_nest_end(msg, nested_ext_capab);
2361                                 if (state->split)
2362                                         break;
2363                         }
2364                         nla_nest_end(msg, nested);
2365                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2366                                 state->capa_start = i + 1;
2367                                 break;
2368                         }
2369                 }
2370
2371                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2372                                 rdev->wiphy.nan_supported_bands))
2373                         goto nla_put_failure;
2374
2375                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2376                                             NL80211_EXT_FEATURE_TXQS)) {
2377                         struct cfg80211_txq_stats txqstats = {};
2378                         int res;
2379
2380                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2381                         if (!res &&
2382                             !nl80211_put_txq_stats(msg, &txqstats,
2383                                                    NL80211_ATTR_TXQ_STATS))
2384                                 goto nla_put_failure;
2385
2386                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2387                                         rdev->wiphy.txq_limit))
2388                                 goto nla_put_failure;
2389                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2390                                         rdev->wiphy.txq_memory_limit))
2391                                 goto nla_put_failure;
2392                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2393                                         rdev->wiphy.txq_quantum))
2394                                 goto nla_put_failure;
2395                 }
2396
2397                 state->split_start++;
2398                 break;
2399         case 14:
2400                 if (nl80211_send_pmsr_capa(rdev, msg))
2401                         goto nla_put_failure;
2402
2403                 state->split_start++;
2404                 break;
2405         case 15:
2406                 if (rdev->wiphy.akm_suites &&
2407                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2408                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2409                             rdev->wiphy.akm_suites))
2410                         goto nla_put_failure;
2411
2412                 /* done */
2413                 state->split_start = 0;
2414                 break;
2415         }
2416  finish:
2417         genlmsg_end(msg, hdr);
2418         return 0;
2419
2420  nla_put_failure:
2421         genlmsg_cancel(msg, hdr);
2422         return -EMSGSIZE;
2423 }
2424
2425 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2426                                     struct netlink_callback *cb,
2427                                     struct nl80211_dump_wiphy_state *state)
2428 {
2429         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2430         int ret;
2431
2432         if (!tb)
2433                 return -ENOMEM;
2434
2435         ret = nlmsg_parse_deprecated(cb->nlh,
2436                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2437                                      tb, nl80211_fam.maxattr,
2438                                      nl80211_policy, NULL);
2439         /* ignore parse errors for backward compatibility */
2440         if (ret) {
2441                 ret = 0;
2442                 goto out;
2443         }
2444
2445         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2446         if (tb[NL80211_ATTR_WIPHY])
2447                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2448         if (tb[NL80211_ATTR_WDEV])
2449                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2450         if (tb[NL80211_ATTR_IFINDEX]) {
2451                 struct net_device *netdev;
2452                 struct cfg80211_registered_device *rdev;
2453                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2454
2455                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2456                 if (!netdev) {
2457                         ret = -ENODEV;
2458                         goto out;
2459                 }
2460                 if (netdev->ieee80211_ptr) {
2461                         rdev = wiphy_to_rdev(
2462                                 netdev->ieee80211_ptr->wiphy);
2463                         state->filter_wiphy = rdev->wiphy_idx;
2464                 }
2465         }
2466
2467         ret = 0;
2468 out:
2469         kfree(tb);
2470         return ret;
2471 }
2472
2473 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2474 {
2475         int idx = 0, ret;
2476         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2477         struct cfg80211_registered_device *rdev;
2478
2479         rtnl_lock();
2480         if (!state) {
2481                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2482                 if (!state) {
2483                         rtnl_unlock();
2484                         return -ENOMEM;
2485                 }
2486                 state->filter_wiphy = -1;
2487                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2488                 if (ret) {
2489                         kfree(state);
2490                         rtnl_unlock();
2491                         return ret;
2492                 }
2493                 cb->args[0] = (long)state;
2494         }
2495
2496         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2497                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2498                         continue;
2499                 if (++idx <= state->start)
2500                         continue;
2501                 if (state->filter_wiphy != -1 &&
2502                     state->filter_wiphy != rdev->wiphy_idx)
2503                         continue;
2504                 /* attempt to fit multiple wiphy data chunks into the skb */
2505                 do {
2506                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2507                                                  skb,
2508                                                  NETLINK_CB(cb->skb).portid,
2509                                                  cb->nlh->nlmsg_seq,
2510                                                  NLM_F_MULTI, state);
2511                         if (ret < 0) {
2512                                 /*
2513                                  * If sending the wiphy data didn't fit (ENOBUFS
2514                                  * or EMSGSIZE returned), this SKB is still
2515                                  * empty (so it's not too big because another
2516                                  * wiphy dataset is already in the skb) and
2517                                  * we've not tried to adjust the dump allocation
2518                                  * yet ... then adjust the alloc size to be
2519                                  * bigger, and return 1 but with the empty skb.
2520                                  * This results in an empty message being RX'ed
2521                                  * in userspace, but that is ignored.
2522                                  *
2523                                  * We can then retry with the larger buffer.
2524                                  */
2525                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2526                                     !skb->len && !state->split &&
2527                                     cb->min_dump_alloc < 4096) {
2528                                         cb->min_dump_alloc = 4096;
2529                                         state->split_start = 0;
2530                                         rtnl_unlock();
2531                                         return 1;
2532                                 }
2533                                 idx--;
2534                                 break;
2535                         }
2536                 } while (state->split_start > 0);
2537                 break;
2538         }
2539         rtnl_unlock();
2540
2541         state->start = idx;
2542
2543         return skb->len;
2544 }
2545
2546 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2547 {
2548         kfree((void *)cb->args[0]);
2549         return 0;
2550 }
2551
2552 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2553 {
2554         struct sk_buff *msg;
2555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2556         struct nl80211_dump_wiphy_state state = {};
2557
2558         msg = nlmsg_new(4096, GFP_KERNEL);
2559         if (!msg)
2560                 return -ENOMEM;
2561
2562         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2563                                info->snd_portid, info->snd_seq, 0,
2564                                &state) < 0) {
2565                 nlmsg_free(msg);
2566                 return -ENOBUFS;
2567         }
2568
2569         return genlmsg_reply(msg, info);
2570 }
2571
2572 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2573         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2574         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2575         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2576         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2577         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2578 };
2579
2580 static int parse_txq_params(struct nlattr *tb[],
2581                             struct ieee80211_txq_params *txq_params)
2582 {
2583         u8 ac;
2584
2585         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2586             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2587             !tb[NL80211_TXQ_ATTR_AIFS])
2588                 return -EINVAL;
2589
2590         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2591         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2592         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2593         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2594         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2595
2596         if (ac >= NL80211_NUM_ACS)
2597                 return -EINVAL;
2598         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2599         return 0;
2600 }
2601
2602 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2603 {
2604         /*
2605          * You can only set the channel explicitly for WDS interfaces,
2606          * all others have their channel managed via their respective
2607          * "establish a connection" command (connect, join, ...)
2608          *
2609          * For AP/GO and mesh mode, the channel can be set with the
2610          * channel userspace API, but is only stored and passed to the
2611          * low-level driver when the AP starts or the mesh is joined.
2612          * This is for backward compatibility, userspace can also give
2613          * the channel in the start-ap or join-mesh commands instead.
2614          *
2615          * Monitors are special as they are normally slaved to
2616          * whatever else is going on, so they have their own special
2617          * operation to set the monitor channel if possible.
2618          */
2619         return !wdev ||
2620                 wdev->iftype == NL80211_IFTYPE_AP ||
2621                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2622                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2623                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2624 }
2625
2626 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2627                           struct genl_info *info,
2628                           struct cfg80211_chan_def *chandef)
2629 {
2630         struct netlink_ext_ack *extack = info->extack;
2631         struct nlattr **attrs = info->attrs;
2632         u32 control_freq;
2633
2634         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2635                 return -EINVAL;
2636
2637         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2638
2639         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2640         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2641         chandef->center_freq1 = control_freq;
2642         chandef->center_freq2 = 0;
2643
2644         /* Primary channel not allowed */
2645         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2646                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2647                                     "Channel is disabled");
2648                 return -EINVAL;
2649         }
2650
2651         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2652                 enum nl80211_channel_type chantype;
2653
2654                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2655
2656                 switch (chantype) {
2657                 case NL80211_CHAN_NO_HT:
2658                 case NL80211_CHAN_HT20:
2659                 case NL80211_CHAN_HT40PLUS:
2660                 case NL80211_CHAN_HT40MINUS:
2661                         cfg80211_chandef_create(chandef, chandef->chan,
2662                                                 chantype);
2663                         /* user input for center_freq is incorrect */
2664                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2665                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2666                                 NL_SET_ERR_MSG_ATTR(extack,
2667                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2668                                                     "bad center frequency 1");
2669                                 return -EINVAL;
2670                         }
2671                         /* center_freq2 must be zero */
2672                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2673                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2674                                 NL_SET_ERR_MSG_ATTR(extack,
2675                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2676                                                     "center frequency 2 can't be used");
2677                                 return -EINVAL;
2678                         }
2679                         break;
2680                 default:
2681                         NL_SET_ERR_MSG_ATTR(extack,
2682                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2683                                             "invalid channel type");
2684                         return -EINVAL;
2685                 }
2686         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2687                 chandef->width =
2688                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2689                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2690                         chandef->center_freq1 =
2691                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2692                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2693                         chandef->center_freq2 =
2694                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2695         }
2696
2697         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2698                 chandef->edmg.channels =
2699                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2700
2701                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2702                         chandef->edmg.bw_config =
2703                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2704         } else {
2705                 chandef->edmg.bw_config = 0;
2706                 chandef->edmg.channels = 0;
2707         }
2708
2709         if (!cfg80211_chandef_valid(chandef)) {
2710                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2711                 return -EINVAL;
2712         }
2713
2714         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2715                                      IEEE80211_CHAN_DISABLED)) {
2716                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2717                 return -EINVAL;
2718         }
2719
2720         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2721              chandef->width == NL80211_CHAN_WIDTH_10) &&
2722             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2723                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2724                 return -EINVAL;
2725         }
2726
2727         return 0;
2728 }
2729
2730 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2731                                  struct net_device *dev,
2732                                  struct genl_info *info)
2733 {
2734         struct cfg80211_chan_def chandef;
2735         int result;
2736         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2737         struct wireless_dev *wdev = NULL;
2738
2739         if (dev)
2740                 wdev = dev->ieee80211_ptr;
2741         if (!nl80211_can_set_dev_channel(wdev))
2742                 return -EOPNOTSUPP;
2743         if (wdev)
2744                 iftype = wdev->iftype;
2745
2746         result = nl80211_parse_chandef(rdev, info, &chandef);
2747         if (result)
2748                 return result;
2749
2750         switch (iftype) {
2751         case NL80211_IFTYPE_AP:
2752         case NL80211_IFTYPE_P2P_GO:
2753                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2754                                                    iftype)) {
2755                         result = -EINVAL;
2756                         break;
2757                 }
2758                 if (wdev->beacon_interval) {
2759                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2760                             !(rdev->wiphy.features &
2761                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2762                                 result = -EBUSY;
2763                                 break;
2764                         }
2765
2766                         /* Only allow dynamic channel width changes */
2767                         if (chandef.chan != wdev->preset_chandef.chan) {
2768                                 result = -EBUSY;
2769                                 break;
2770                         }
2771                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2772                         if (result)
2773                                 break;
2774                 }
2775                 wdev->preset_chandef = chandef;
2776                 result = 0;
2777                 break;
2778         case NL80211_IFTYPE_MESH_POINT:
2779                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2780                 break;
2781         case NL80211_IFTYPE_MONITOR:
2782                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2783                 break;
2784         default:
2785                 result = -EINVAL;
2786         }
2787
2788         return result;
2789 }
2790
2791 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2792 {
2793         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2794         struct net_device *netdev = info->user_ptr[1];
2795
2796         return __nl80211_set_channel(rdev, netdev, info);
2797 }
2798
2799 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2800 {
2801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2802         struct net_device *dev = info->user_ptr[1];
2803         struct wireless_dev *wdev = dev->ieee80211_ptr;
2804         const u8 *bssid;
2805
2806         if (!info->attrs[NL80211_ATTR_MAC])
2807                 return -EINVAL;
2808
2809         if (netif_running(dev))
2810                 return -EBUSY;
2811
2812         if (!rdev->ops->set_wds_peer)
2813                 return -EOPNOTSUPP;
2814
2815         if (wdev->iftype != NL80211_IFTYPE_WDS)
2816                 return -EOPNOTSUPP;
2817
2818         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2819         return rdev_set_wds_peer(rdev, dev, bssid);
2820 }
2821
2822 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2823 {
2824         struct cfg80211_registered_device *rdev;
2825         struct net_device *netdev = NULL;
2826         struct wireless_dev *wdev;
2827         int result = 0, rem_txq_params = 0;
2828         struct nlattr *nl_txq_params;
2829         u32 changed;
2830         u8 retry_short = 0, retry_long = 0;
2831         u32 frag_threshold = 0, rts_threshold = 0;
2832         u8 coverage_class = 0;
2833         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2834
2835         ASSERT_RTNL();
2836
2837         /*
2838          * Try to find the wiphy and netdev. Normally this
2839          * function shouldn't need the netdev, but this is
2840          * done for backward compatibility -- previously
2841          * setting the channel was done per wiphy, but now
2842          * it is per netdev. Previous userland like hostapd
2843          * also passed a netdev to set_wiphy, so that it is
2844          * possible to let that go to the right netdev!
2845          */
2846
2847         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2848                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2849
2850                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2851                 if (netdev && netdev->ieee80211_ptr)
2852                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2853                 else
2854                         netdev = NULL;
2855         }
2856
2857         if (!netdev) {
2858                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2859                                                   info->attrs);
2860                 if (IS_ERR(rdev))
2861                         return PTR_ERR(rdev);
2862                 wdev = NULL;
2863                 netdev = NULL;
2864                 result = 0;
2865         } else
2866                 wdev = netdev->ieee80211_ptr;
2867
2868         /*
2869          * end workaround code, by now the rdev is available
2870          * and locked, and wdev may or may not be NULL.
2871          */
2872
2873         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2874                 result = cfg80211_dev_rename(
2875                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2876
2877         if (result)
2878                 return result;
2879
2880         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2881                 struct ieee80211_txq_params txq_params;
2882                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2883
2884                 if (!rdev->ops->set_txq_params)
2885                         return -EOPNOTSUPP;
2886
2887                 if (!netdev)
2888                         return -EINVAL;
2889
2890                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2891                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2892                         return -EINVAL;
2893
2894                 if (!netif_running(netdev))
2895                         return -ENETDOWN;
2896
2897                 nla_for_each_nested(nl_txq_params,
2898                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2899                                     rem_txq_params) {
2900                         result = nla_parse_nested_deprecated(tb,
2901                                                              NL80211_TXQ_ATTR_MAX,
2902                                                              nl_txq_params,
2903                                                              txq_params_policy,
2904                                                              info->extack);
2905                         if (result)
2906                                 return result;
2907                         result = parse_txq_params(tb, &txq_params);
2908                         if (result)
2909                                 return result;
2910
2911                         result = rdev_set_txq_params(rdev, netdev,
2912                                                      &txq_params);
2913                         if (result)
2914                                 return result;
2915                 }
2916         }
2917
2918         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2919                 result = __nl80211_set_channel(
2920                         rdev,
2921                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2922                         info);
2923                 if (result)
2924                         return result;
2925         }
2926
2927         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2928                 struct wireless_dev *txp_wdev = wdev;
2929                 enum nl80211_tx_power_setting type;
2930                 int idx, mbm = 0;
2931
2932                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2933                         txp_wdev = NULL;
2934
2935                 if (!rdev->ops->set_tx_power)
2936                         return -EOPNOTSUPP;
2937
2938                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2939                 type = nla_get_u32(info->attrs[idx]);
2940
2941                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2942                     (type != NL80211_TX_POWER_AUTOMATIC))
2943                         return -EINVAL;
2944
2945                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2946                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2947                         mbm = nla_get_u32(info->attrs[idx]);
2948                 }
2949
2950                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2951                 if (result)
2952                         return result;
2953         }
2954
2955         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2956             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2957                 u32 tx_ant, rx_ant;
2958
2959                 if ((!rdev->wiphy.available_antennas_tx &&
2960                      !rdev->wiphy.available_antennas_rx) ||
2961                     !rdev->ops->set_antenna)
2962                         return -EOPNOTSUPP;
2963
2964                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2965                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2966
2967                 /* reject antenna configurations which don't match the
2968                  * available antenna masks, except for the "all" mask */
2969                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2970                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2971                         return -EINVAL;
2972
2973                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2974                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2975
2976                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2977                 if (result)
2978                         return result;
2979         }
2980
2981         changed = 0;
2982
2983         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2984                 retry_short = nla_get_u8(
2985                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2986
2987                 changed |= WIPHY_PARAM_RETRY_SHORT;
2988         }
2989
2990         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2991                 retry_long = nla_get_u8(
2992                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2993
2994                 changed |= WIPHY_PARAM_RETRY_LONG;
2995         }
2996
2997         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2998                 frag_threshold = nla_get_u32(
2999                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3000                 if (frag_threshold < 256)
3001                         return -EINVAL;
3002
3003                 if (frag_threshold != (u32) -1) {
3004                         /*
3005                          * Fragments (apart from the last one) are required to
3006                          * have even length. Make the fragmentation code
3007                          * simpler by stripping LSB should someone try to use
3008                          * odd threshold value.
3009                          */
3010                         frag_threshold &= ~0x1;
3011                 }
3012                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3013         }
3014
3015         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3016                 rts_threshold = nla_get_u32(
3017                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3018                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3019         }
3020
3021         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3022                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3023                         return -EINVAL;
3024
3025                 coverage_class = nla_get_u8(
3026                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3027                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3028         }
3029
3030         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3031                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3032                         return -EOPNOTSUPP;
3033
3034                 changed |= WIPHY_PARAM_DYN_ACK;
3035         }
3036
3037         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3038                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3039                                              NL80211_EXT_FEATURE_TXQS))
3040                         return -EOPNOTSUPP;
3041                 txq_limit = nla_get_u32(
3042                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3043                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3044         }
3045
3046         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3047                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3048                                              NL80211_EXT_FEATURE_TXQS))
3049                         return -EOPNOTSUPP;
3050                 txq_memory_limit = nla_get_u32(
3051                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3052                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3053         }
3054
3055         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3056                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3057                                              NL80211_EXT_FEATURE_TXQS))
3058                         return -EOPNOTSUPP;
3059                 txq_quantum = nla_get_u32(
3060                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3061                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3062         }
3063
3064         if (changed) {
3065                 u8 old_retry_short, old_retry_long;
3066                 u32 old_frag_threshold, old_rts_threshold;
3067                 u8 old_coverage_class;
3068                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3069
3070                 if (!rdev->ops->set_wiphy_params)
3071                         return -EOPNOTSUPP;
3072
3073                 old_retry_short = rdev->wiphy.retry_short;
3074                 old_retry_long = rdev->wiphy.retry_long;
3075                 old_frag_threshold = rdev->wiphy.frag_threshold;
3076                 old_rts_threshold = rdev->wiphy.rts_threshold;
3077                 old_coverage_class = rdev->wiphy.coverage_class;
3078                 old_txq_limit = rdev->wiphy.txq_limit;
3079                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3080                 old_txq_quantum = rdev->wiphy.txq_quantum;
3081
3082                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3083                         rdev->wiphy.retry_short = retry_short;
3084                 if (changed & WIPHY_PARAM_RETRY_LONG)
3085                         rdev->wiphy.retry_long = retry_long;
3086                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3087                         rdev->wiphy.frag_threshold = frag_threshold;
3088                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3089                         rdev->wiphy.rts_threshold = rts_threshold;
3090                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3091                         rdev->wiphy.coverage_class = coverage_class;
3092                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3093                         rdev->wiphy.txq_limit = txq_limit;
3094                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3095                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3096                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3097                         rdev->wiphy.txq_quantum = txq_quantum;
3098
3099                 result = rdev_set_wiphy_params(rdev, changed);
3100                 if (result) {
3101                         rdev->wiphy.retry_short = old_retry_short;
3102                         rdev->wiphy.retry_long = old_retry_long;
3103                         rdev->wiphy.frag_threshold = old_frag_threshold;
3104                         rdev->wiphy.rts_threshold = old_rts_threshold;
3105                         rdev->wiphy.coverage_class = old_coverage_class;
3106                         rdev->wiphy.txq_limit = old_txq_limit;
3107                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3108                         rdev->wiphy.txq_quantum = old_txq_quantum;
3109                         return result;
3110                 }
3111         }
3112         return 0;
3113 }
3114
3115 static int nl80211_send_chandef(struct sk_buff *msg,
3116                                 const struct cfg80211_chan_def *chandef)
3117 {
3118         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3119                 return -EINVAL;
3120
3121         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3122                         chandef->chan->center_freq))
3123                 return -ENOBUFS;
3124         switch (chandef->width) {
3125         case NL80211_CHAN_WIDTH_20_NOHT:
3126         case NL80211_CHAN_WIDTH_20:
3127         case NL80211_CHAN_WIDTH_40:
3128                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3129                                 cfg80211_get_chandef_type(chandef)))
3130                         return -ENOBUFS;
3131                 break;
3132         default:
3133                 break;
3134         }
3135         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3136                 return -ENOBUFS;
3137         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3138                 return -ENOBUFS;
3139         if (chandef->center_freq2 &&
3140             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3141                 return -ENOBUFS;
3142         return 0;
3143 }
3144
3145 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3146                               struct cfg80211_registered_device *rdev,
3147                               struct wireless_dev *wdev,
3148                               enum nl80211_commands cmd)
3149 {
3150         struct net_device *dev = wdev->netdev;
3151         void *hdr;
3152
3153         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3154                 cmd != NL80211_CMD_DEL_INTERFACE &&
3155                 cmd != NL80211_CMD_SET_INTERFACE);
3156
3157         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3158         if (!hdr)
3159                 return -1;
3160
3161         if (dev &&
3162             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3163              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3164                 goto nla_put_failure;
3165
3166         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3167             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3168             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3169                               NL80211_ATTR_PAD) ||
3170             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3171             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3172                         rdev->devlist_generation ^
3173                         (cfg80211_rdev_list_generation << 2)) ||
3174             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3175                 goto nla_put_failure;
3176
3177         if (rdev->ops->get_channel) {
3178                 int ret;
3179                 struct cfg80211_chan_def chandef;
3180
3181                 ret = rdev_get_channel(rdev, wdev, &chandef);
3182                 if (ret == 0) {
3183                         if (nl80211_send_chandef(msg, &chandef))
3184                                 goto nla_put_failure;
3185                 }
3186         }
3187
3188         if (rdev->ops->get_tx_power) {
3189                 int dbm, ret;
3190
3191                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3192                 if (ret == 0 &&
3193                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3194                                 DBM_TO_MBM(dbm)))
3195                         goto nla_put_failure;
3196         }
3197
3198         wdev_lock(wdev);
3199         switch (wdev->iftype) {
3200         case NL80211_IFTYPE_AP:
3201                 if (wdev->ssid_len &&
3202                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3203                         goto nla_put_failure_locked;
3204                 break;
3205         case NL80211_IFTYPE_STATION:
3206         case NL80211_IFTYPE_P2P_CLIENT:
3207         case NL80211_IFTYPE_ADHOC: {
3208                 const u8 *ssid_ie;
3209                 if (!wdev->current_bss)
3210                         break;
3211                 rcu_read_lock();
3212                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3213                                                WLAN_EID_SSID);
3214                 if (ssid_ie &&
3215                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3216                         goto nla_put_failure_rcu_locked;
3217                 rcu_read_unlock();
3218                 break;
3219                 }
3220         default:
3221                 /* nothing */
3222                 break;
3223         }
3224         wdev_unlock(wdev);
3225
3226         if (rdev->ops->get_txq_stats) {
3227                 struct cfg80211_txq_stats txqstats = {};
3228                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3229
3230                 if (ret == 0 &&
3231                     !nl80211_put_txq_stats(msg, &txqstats,
3232                                            NL80211_ATTR_TXQ_STATS))
3233                         goto nla_put_failure;
3234         }
3235
3236         genlmsg_end(msg, hdr);
3237         return 0;
3238
3239  nla_put_failure_rcu_locked:
3240         rcu_read_unlock();
3241  nla_put_failure_locked:
3242         wdev_unlock(wdev);
3243  nla_put_failure:
3244         genlmsg_cancel(msg, hdr);
3245         return -EMSGSIZE;
3246 }
3247
3248 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3249 {
3250         int wp_idx = 0;
3251         int if_idx = 0;
3252         int wp_start = cb->args[0];
3253         int if_start = cb->args[1];
3254         int filter_wiphy = -1;
3255         struct cfg80211_registered_device *rdev;
3256         struct wireless_dev *wdev;
3257         int ret;
3258
3259         rtnl_lock();
3260         if (!cb->args[2]) {
3261                 struct nl80211_dump_wiphy_state state = {
3262                         .filter_wiphy = -1,
3263                 };
3264
3265                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3266                 if (ret)
3267                         goto out_unlock;
3268
3269                 filter_wiphy = state.filter_wiphy;
3270
3271                 /*
3272                  * if filtering, set cb->args[2] to +1 since 0 is the default
3273                  * value needed to determine that parsing is necessary.
3274                  */
3275                 if (filter_wiphy >= 0)
3276                         cb->args[2] = filter_wiphy + 1;
3277                 else
3278                         cb->args[2] = -1;
3279         } else if (cb->args[2] > 0) {
3280                 filter_wiphy = cb->args[2] - 1;
3281         }
3282
3283         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3284                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3285                         continue;
3286                 if (wp_idx < wp_start) {
3287                         wp_idx++;
3288                         continue;
3289                 }
3290
3291                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3292                         continue;
3293
3294                 if_idx = 0;
3295
3296                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3297                         if (if_idx < if_start) {
3298                                 if_idx++;
3299                                 continue;
3300                         }
3301                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3302                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3303                                                rdev, wdev,
3304                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3305                                 goto out;
3306                         }
3307                         if_idx++;
3308                 }
3309
3310                 wp_idx++;
3311         }
3312  out:
3313         cb->args[0] = wp_idx;
3314         cb->args[1] = if_idx;
3315
3316         ret = skb->len;
3317  out_unlock:
3318         rtnl_unlock();
3319
3320         return ret;
3321 }
3322
3323 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3324 {
3325         struct sk_buff *msg;
3326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3327         struct wireless_dev *wdev = info->user_ptr[1];
3328
3329         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3330         if (!msg)
3331                 return -ENOMEM;
3332
3333         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3334                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3335                 nlmsg_free(msg);
3336                 return -ENOBUFS;
3337         }
3338
3339         return genlmsg_reply(msg, info);
3340 }
3341
3342 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3343         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3344         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3345         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3346         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3347         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3348         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3349 };
3350
3351 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3352 {
3353         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3354         int flag;
3355
3356         *mntrflags = 0;
3357
3358         if (!nla)
3359                 return -EINVAL;
3360
3361         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3362                 return -EINVAL;
3363
3364         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3365                 if (flags[flag])
3366                         *mntrflags |= (1<<flag);
3367
3368         *mntrflags |= MONITOR_FLAG_CHANGED;
3369
3370         return 0;
3371 }
3372
3373 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3374                                      enum nl80211_iftype type,
3375                                      struct genl_info *info,
3376                                      struct vif_params *params)
3377 {
3378         bool change = false;
3379         int err;
3380
3381         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3382                 if (type != NL80211_IFTYPE_MONITOR)
3383                         return -EINVAL;
3384
3385                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3386                                           &params->flags);
3387                 if (err)
3388                         return err;
3389
3390                 change = true;
3391         }
3392
3393         if (params->flags & MONITOR_FLAG_ACTIVE &&
3394             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3395                 return -EOPNOTSUPP;
3396
3397         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3398                 const u8 *mumimo_groups;
3399                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3400
3401                 if (type != NL80211_IFTYPE_MONITOR)
3402                         return -EINVAL;
3403
3404                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3405                         return -EOPNOTSUPP;
3406
3407                 mumimo_groups =
3408                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3409
3410                 /* bits 0 and 63 are reserved and must be zero */
3411                 if ((mumimo_groups[0] & BIT(0)) ||
3412                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3413                         return -EINVAL;
3414
3415                 params->vht_mumimo_groups = mumimo_groups;
3416                 change = true;
3417         }
3418
3419         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3420                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3421
3422                 if (type != NL80211_IFTYPE_MONITOR)
3423                         return -EINVAL;
3424
3425                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3426                         return -EOPNOTSUPP;
3427
3428                 params->vht_mumimo_follow_addr =
3429                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3430                 change = true;
3431         }
3432
3433         return change ? 1 : 0;
3434 }
3435
3436 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3437                                struct net_device *netdev, u8 use_4addr,
3438                                enum nl80211_iftype iftype)
3439 {
3440         if (!use_4addr) {
3441                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3442                         return -EBUSY;
3443                 return 0;
3444         }
3445
3446         switch (iftype) {
3447         case NL80211_IFTYPE_AP_VLAN:
3448                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3449                         return 0;
3450                 break;
3451         case NL80211_IFTYPE_STATION:
3452                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3453                         return 0;
3454                 break;
3455         default:
3456                 break;
3457         }
3458
3459         return -EOPNOTSUPP;
3460 }
3461
3462 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3463 {
3464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3465         struct vif_params params;
3466         int err;
3467         enum nl80211_iftype otype, ntype;
3468         struct net_device *dev = info->user_ptr[1];
3469         bool change = false;
3470
3471         memset(&params, 0, sizeof(params));
3472
3473         otype = ntype = dev->ieee80211_ptr->iftype;
3474
3475         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3476                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3477                 if (otype != ntype)
3478                         change = true;
3479         }
3480
3481         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3482                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3483
3484                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3485                         return -EINVAL;
3486                 if (netif_running(dev))
3487                         return -EBUSY;
3488
3489                 wdev_lock(wdev);
3490                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3491                              IEEE80211_MAX_MESH_ID_LEN);
3492                 wdev->mesh_id_up_len =
3493                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3494                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3495                        wdev->mesh_id_up_len);
3496                 wdev_unlock(wdev);
3497         }
3498
3499         if (info->attrs[NL80211_ATTR_4ADDR]) {
3500                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3501                 change = true;
3502                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3503                 if (err)
3504                         return err;
3505         } else {
3506                 params.use_4addr = -1;
3507         }
3508
3509         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3510         if (err < 0)
3511                 return err;
3512         if (err > 0)
3513                 change = true;
3514
3515         if (change)
3516                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3517         else
3518                 err = 0;
3519
3520         if (!err && params.use_4addr != -1)
3521                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3522
3523         if (change && !err) {
3524                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3525
3526                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3527         }
3528
3529         return err;
3530 }
3531
3532 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3533 {
3534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3535         struct vif_params params;
3536         struct wireless_dev *wdev;
3537         struct sk_buff *msg;
3538         int err;
3539         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3540
3541         /* to avoid failing a new interface creation due to pending removal */
3542         cfg80211_destroy_ifaces(rdev);
3543
3544         memset(&params, 0, sizeof(params));
3545
3546         if (!info->attrs[NL80211_ATTR_IFNAME])
3547                 return -EINVAL;
3548
3549         if (info->attrs[NL80211_ATTR_IFTYPE])
3550                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3551
3552         if (!rdev->ops->add_virtual_intf)
3553                 return -EOPNOTSUPP;
3554
3555         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3556              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3557             info->attrs[NL80211_ATTR_MAC]) {
3558                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3559                            ETH_ALEN);
3560                 if (!is_valid_ether_addr(params.macaddr))
3561                         return -EADDRNOTAVAIL;
3562         }
3563
3564         if (info->attrs[NL80211_ATTR_4ADDR]) {
3565                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3566                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3567                 if (err)
3568                         return err;
3569         }
3570
3571         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3572                 return -EOPNOTSUPP;
3573
3574         err = nl80211_parse_mon_options(rdev, type, info, &params);
3575         if (err < 0)
3576                 return err;
3577
3578         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3579         if (!msg)
3580                 return -ENOMEM;
3581
3582         wdev = rdev_add_virtual_intf(rdev,
3583                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3584                                 NET_NAME_USER, type, &params);
3585         if (WARN_ON(!wdev)) {
3586                 nlmsg_free(msg);
3587                 return -EPROTO;
3588         } else if (IS_ERR(wdev)) {
3589                 nlmsg_free(msg);
3590                 return PTR_ERR(wdev);
3591         }
3592
3593         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3594                 wdev->owner_nlportid = info->snd_portid;
3595
3596         switch (type) {
3597         case NL80211_IFTYPE_MESH_POINT:
3598                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3599                         break;
3600                 wdev_lock(wdev);
3601                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3602                              IEEE80211_MAX_MESH_ID_LEN);
3603                 wdev->mesh_id_up_len =
3604                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3605                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3606                        wdev->mesh_id_up_len);
3607                 wdev_unlock(wdev);
3608                 break;
3609         case NL80211_IFTYPE_NAN:
3610         case NL80211_IFTYPE_P2P_DEVICE:
3611                 /*
3612                  * P2P Device and NAN do not have a netdev, so don't go
3613                  * through the netdev notifier and must be added here
3614                  */
3615                 cfg80211_init_wdev(rdev, wdev);
3616                 break;
3617         default:
3618                 break;
3619         }
3620
3621         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3622                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3623                 nlmsg_free(msg);
3624                 return -ENOBUFS;
3625         }
3626
3627         return genlmsg_reply(msg, info);
3628 }
3629
3630 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3631 {
3632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3633         struct wireless_dev *wdev = info->user_ptr[1];
3634
3635         if (!rdev->ops->del_virtual_intf)
3636                 return -EOPNOTSUPP;
3637
3638         /*
3639          * If we remove a wireless device without a netdev then clear
3640          * user_ptr[1] so that nl80211_post_doit won't dereference it
3641          * to check if it needs to do dev_put(). Otherwise it crashes
3642          * since the wdev has been freed, unlike with a netdev where
3643          * we need the dev_put() for the netdev to really be freed.
3644          */
3645         if (!wdev->netdev)
3646                 info->user_ptr[1] = NULL;
3647
3648         return rdev_del_virtual_intf(rdev, wdev);
3649 }
3650
3651 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3652 {
3653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3654         struct net_device *dev = info->user_ptr[1];
3655         u16 noack_map;
3656
3657         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3658                 return -EINVAL;
3659
3660         if (!rdev->ops->set_noack_map)
3661                 return -EOPNOTSUPP;
3662
3663         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3664
3665         return rdev_set_noack_map(rdev, dev, noack_map);
3666 }
3667
3668 struct get_key_cookie {
3669         struct sk_buff *msg;
3670         int error;
3671         int idx;
3672 };
3673
3674 static void get_key_callback(void *c, struct key_params *params)
3675 {
3676         struct nlattr *key;
3677         struct get_key_cookie *cookie = c;
3678
3679         if ((params->key &&
3680              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3681                      params->key_len, params->key)) ||
3682             (params->seq &&
3683              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3684                      params->seq_len, params->seq)) ||
3685             (params->cipher &&
3686              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3687                          params->cipher)))
3688                 goto nla_put_failure;
3689
3690         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3691         if (!key)
3692                 goto nla_put_failure;
3693
3694         if ((params->key &&
3695              nla_put(cookie->msg, NL80211_KEY_DATA,
3696                      params->key_len, params->key)) ||
3697             (params->seq &&
3698              nla_put(cookie->msg, NL80211_KEY_SEQ,
3699                      params->seq_len, params->seq)) ||
3700             (params->cipher &&
3701              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3702                          params->cipher)))
3703                 goto nla_put_failure;
3704
3705         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3706                 goto nla_put_failure;
3707
3708         nla_nest_end(cookie->msg, key);
3709
3710         return;
3711  nla_put_failure:
3712         cookie->error = 1;
3713 }
3714
3715 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3716 {
3717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3718         int err;
3719         struct net_device *dev = info->user_ptr[1];
3720         u8 key_idx = 0;
3721         const u8 *mac_addr = NULL;
3722         bool pairwise;
3723         struct get_key_cookie cookie = {
3724                 .error = 0,
3725         };
3726         void *hdr;
3727         struct sk_buff *msg;
3728
3729         if (info->attrs[NL80211_ATTR_KEY_IDX])
3730                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3731
3732         if (info->attrs[NL80211_ATTR_MAC])
3733                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3734
3735         pairwise = !!mac_addr;
3736         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3737                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3738
3739                 if (kt != NL80211_KEYTYPE_GROUP &&
3740                     kt != NL80211_KEYTYPE_PAIRWISE)
3741                         return -EINVAL;
3742                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3743         }
3744
3745         if (!rdev->ops->get_key)
3746                 return -EOPNOTSUPP;
3747
3748         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3749                 return -ENOENT;
3750
3751         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3752         if (!msg)
3753                 return -ENOMEM;
3754
3755         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3756                              NL80211_CMD_NEW_KEY);
3757         if (!hdr)
3758                 goto nla_put_failure;
3759
3760         cookie.msg = msg;
3761         cookie.idx = key_idx;
3762
3763         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3764             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3765                 goto nla_put_failure;
3766         if (mac_addr &&
3767             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3768                 goto nla_put_failure;
3769
3770         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3771                            get_key_callback);
3772
3773         if (err)
3774                 goto free_msg;
3775
3776         if (cookie.error)
3777                 goto nla_put_failure;
3778
3779         genlmsg_end(msg, hdr);
3780         return genlmsg_reply(msg, info);
3781
3782  nla_put_failure:
3783         err = -ENOBUFS;
3784  free_msg:
3785         nlmsg_free(msg);
3786         return err;
3787 }
3788
3789 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3790 {
3791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3792         struct key_parse key;
3793         int err;
3794         struct net_device *dev = info->user_ptr[1];
3795
3796         err = nl80211_parse_key(info, &key);
3797         if (err)
3798                 return err;
3799
3800         if (key.idx < 0)
3801                 return -EINVAL;
3802
3803         /* Only support setting default key and
3804          * Extended Key ID action NL80211_KEY_SET_TX.
3805          */
3806         if (!key.def && !key.defmgmt &&
3807             !(key.p.mode == NL80211_KEY_SET_TX))
3808                 return -EINVAL;
3809
3810         wdev_lock(dev->ieee80211_ptr);
3811
3812         if (key.def) {
3813                 if (!rdev->ops->set_default_key) {
3814                         err = -EOPNOTSUPP;
3815                         goto out;
3816                 }
3817
3818                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3819                 if (err)
3820                         goto out;
3821
3822                 err = rdev_set_default_key(rdev, dev, key.idx,
3823                                                  key.def_uni, key.def_multi);
3824
3825                 if (err)
3826                         goto out;
3827
3828 #ifdef CONFIG_CFG80211_WEXT
3829                 dev->ieee80211_ptr->wext.default_key = key.idx;
3830 #endif
3831         } else if (key.defmgmt) {
3832                 if (key.def_uni || !key.def_multi) {
3833                         err = -EINVAL;
3834                         goto out;
3835                 }
3836
3837                 if (!rdev->ops->set_default_mgmt_key) {
3838                         err = -EOPNOTSUPP;
3839                         goto out;
3840                 }
3841
3842                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3843                 if (err)
3844                         goto out;
3845
3846                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3847                 if (err)
3848                         goto out;
3849
3850 #ifdef CONFIG_CFG80211_WEXT
3851                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3852 #endif
3853         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3854                    wiphy_ext_feature_isset(&rdev->wiphy,
3855                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3856                 u8 *mac_addr = NULL;
3857
3858                 if (info->attrs[NL80211_ATTR_MAC])
3859                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3860
3861                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3862                         err = -EINVAL;
3863                         goto out;
3864                 }
3865
3866                 err = rdev_add_key(rdev, dev, key.idx,
3867                                    NL80211_KEYTYPE_PAIRWISE,
3868                                    mac_addr, &key.p);
3869         } else {
3870                 err = -EINVAL;
3871         }
3872  out:
3873         wdev_unlock(dev->ieee80211_ptr);
3874
3875         return err;
3876 }
3877
3878 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3879 {
3880         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3881         int err;
3882         struct net_device *dev = info->user_ptr[1];
3883         struct key_parse key;
3884         const u8 *mac_addr = NULL;
3885
3886         err = nl80211_parse_key(info, &key);
3887         if (err)
3888                 return err;
3889
3890         if (!key.p.key)
3891                 return -EINVAL;
3892
3893         if (info->attrs[NL80211_ATTR_MAC])
3894                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3895
3896         if (key.type == -1) {
3897                 if (mac_addr)
3898                         key.type = NL80211_KEYTYPE_PAIRWISE;
3899                 else
3900                         key.type = NL80211_KEYTYPE_GROUP;
3901         }
3902
3903         /* for now */
3904         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3905             key.type != NL80211_KEYTYPE_GROUP)
3906                 return -EINVAL;
3907
3908         if (!rdev->ops->add_key)
3909                 return -EOPNOTSUPP;
3910
3911         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3912                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3913                                            mac_addr))
3914                 return -EINVAL;
3915
3916         wdev_lock(dev->ieee80211_ptr);
3917         err = nl80211_key_allowed(dev->ieee80211_ptr);
3918         if (!err)
3919                 err = rdev_add_key(rdev, dev, key.idx,
3920                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3921                                     mac_addr, &key.p);
3922         wdev_unlock(dev->ieee80211_ptr);
3923
3924         return err;
3925 }
3926
3927 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3928 {
3929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3930         int err;
3931         struct net_device *dev = info->user_ptr[1];
3932         u8 *mac_addr = NULL;
3933         struct key_parse key;
3934
3935         err = nl80211_parse_key(info, &key);
3936         if (err)
3937                 return err;
3938
3939         if (info->attrs[NL80211_ATTR_MAC])
3940                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3941
3942         if (key.type == -1) {
3943                 if (mac_addr)
3944                         key.type = NL80211_KEYTYPE_PAIRWISE;
3945                 else
3946                         key.type = NL80211_KEYTYPE_GROUP;
3947         }
3948
3949         /* for now */
3950         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3951             key.type != NL80211_KEYTYPE_GROUP)
3952                 return -EINVAL;
3953
3954         if (!rdev->ops->del_key)
3955                 return -EOPNOTSUPP;
3956
3957         wdev_lock(dev->ieee80211_ptr);
3958         err = nl80211_key_allowed(dev->ieee80211_ptr);
3959
3960         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3961             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3962                 err = -ENOENT;
3963
3964         if (!err)
3965                 err = rdev_del_key(rdev, dev, key.idx,
3966                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3967                                    mac_addr);
3968
3969 #ifdef CONFIG_CFG80211_WEXT
3970         if (!err) {
3971                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3972                         dev->ieee80211_ptr->wext.default_key = -1;
3973                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3974                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3975         }
3976 #endif
3977         wdev_unlock(dev->ieee80211_ptr);
3978
3979         return err;
3980 }
3981
3982 /* This function returns an error or the number of nested attributes */
3983 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3984 {
3985         struct nlattr *attr;
3986         int n_entries = 0, tmp;
3987
3988         nla_for_each_nested(attr, nl_attr, tmp) {
3989                 if (nla_len(attr) != ETH_ALEN)
3990                         return -EINVAL;
3991
3992                 n_entries++;
3993         }
3994
3995         return n_entries;
3996 }
3997
3998 /*
3999  * This function parses ACL information and allocates memory for ACL data.
4000  * On successful return, the calling function is responsible to free the
4001  * ACL buffer returned by this function.
4002  */
4003 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4004                                                 struct genl_info *info)
4005 {
4006         enum nl80211_acl_policy acl_policy;
4007         struct nlattr *attr;
4008         struct cfg80211_acl_data *acl;
4009         int i = 0, n_entries, tmp;
4010
4011         if (!wiphy->max_acl_mac_addrs)
4012                 return ERR_PTR(-EOPNOTSUPP);
4013
4014         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4015                 return ERR_PTR(-EINVAL);
4016
4017         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4018         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4019             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4020                 return ERR_PTR(-EINVAL);
4021
4022         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4023                 return ERR_PTR(-EINVAL);
4024
4025         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4026         if (n_entries < 0)
4027                 return ERR_PTR(n_entries);
4028
4029         if (n_entries > wiphy->max_acl_mac_addrs)
4030                 return ERR_PTR(-ENOTSUPP);
4031
4032         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4033         if (!acl)
4034                 return ERR_PTR(-ENOMEM);
4035
4036         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4037                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4038                 i++;
4039         }
4040
4041         acl->n_acl_entries = n_entries;
4042         acl->acl_policy = acl_policy;
4043
4044         return acl;
4045 }
4046
4047 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4048 {
4049         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4050         struct net_device *dev = info->user_ptr[1];
4051         struct cfg80211_acl_data *acl;
4052         int err;
4053
4054         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4055             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4056                 return -EOPNOTSUPP;
4057
4058         if (!dev->ieee80211_ptr->beacon_interval)
4059                 return -EINVAL;
4060
4061         acl = parse_acl_data(&rdev->wiphy, info);
4062         if (IS_ERR(acl))
4063                 return PTR_ERR(acl);
4064
4065         err = rdev_set_mac_acl(rdev, dev, acl);
4066
4067         kfree(acl);
4068
4069         return err;
4070 }
4071
4072 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4073                            u8 *rates, u8 rates_len)
4074 {
4075         u8 i;
4076         u32 mask = 0;
4077
4078         for (i = 0; i < rates_len; i++) {
4079                 int rate = (rates[i] & 0x7f) * 5;
4080                 int ridx;
4081
4082                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4083                         struct ieee80211_rate *srate =
4084                                 &sband->bitrates[ridx];
4085                         if (rate == srate->bitrate) {
4086                                 mask |= 1 << ridx;
4087                                 break;
4088                         }
4089                 }
4090                 if (ridx == sband->n_bitrates)
4091                         return 0; /* rate not found */
4092         }
4093
4094         return mask;
4095 }
4096
4097 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4098                                u8 *rates, u8 rates_len,
4099                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4100 {
4101         u8 i;
4102
4103         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4104
4105         for (i = 0; i < rates_len; i++) {
4106                 int ridx, rbit;
4107
4108                 ridx = rates[i] / 8;
4109                 rbit = BIT(rates[i] % 8);
4110
4111                 /* check validity */
4112                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4113                         return false;
4114
4115                 /* check availability */
4116                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4117                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4118                         mcs[ridx] |= rbit;
4119                 else
4120                         return false;
4121         }
4122
4123         return true;
4124 }
4125
4126 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4127 {
4128         u16 mcs_mask = 0;
4129
4130         switch (vht_mcs_map) {
4131         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4132                 break;
4133         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4134                 mcs_mask = 0x00FF;
4135                 break;
4136         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4137                 mcs_mask = 0x01FF;
4138                 break;
4139         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4140                 mcs_mask = 0x03FF;
4141                 break;
4142         default:
4143                 break;
4144         }
4145
4146         return mcs_mask;
4147 }
4148
4149 static void vht_build_mcs_mask(u16 vht_mcs_map,
4150                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4151 {
4152         u8 nss;
4153
4154         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4155                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4156                 vht_mcs_map >>= 2;
4157         }
4158 }
4159
4160 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4161                              struct nl80211_txrate_vht *txrate,
4162                              u16 mcs[NL80211_VHT_NSS_MAX])
4163 {
4164         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4165         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4166         u8 i;
4167
4168         if (!sband->vht_cap.vht_supported)
4169                 return false;
4170
4171         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4172
4173         /* Build vht_mcs_mask from VHT capabilities */
4174         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4175
4176         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4177                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4178                         mcs[i] = txrate->mcs[i];
4179                 else
4180                         return false;
4181         }
4182
4183         return true;
4184 }
4185
4186 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4187         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4188                                     .len = NL80211_MAX_SUPP_RATES },
4189         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4190                                 .len = NL80211_MAX_SUPP_HT_RATES },
4191         [NL80211_TXRATE_VHT] = {
4192                 .type = NLA_EXACT_LEN_WARN,
4193                 .len = sizeof(struct nl80211_txrate_vht),
4194         },
4195         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4196 };
4197
4198 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4199                                          struct cfg80211_bitrate_mask *mask)
4200 {
4201         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4203         int rem, i;
4204         struct nlattr *tx_rates;
4205         struct ieee80211_supported_band *sband;
4206         u16 vht_tx_mcs_map;
4207
4208         memset(mask, 0, sizeof(*mask));
4209         /* Default to all rates enabled */
4210         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4211                 sband = rdev->wiphy.bands[i];
4212
4213                 if (!sband)
4214                         continue;
4215
4216                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4217                 memcpy(mask->control[i].ht_mcs,
4218                        sband->ht_cap.mcs.rx_mask,
4219                        sizeof(mask->control[i].ht_mcs));
4220
4221                 if (!sband->vht_cap.vht_supported)
4222                         continue;
4223
4224                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4225                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4226         }
4227
4228         /* if no rates are given set it back to the defaults */
4229         if (!info->attrs[NL80211_ATTR_TX_RATES])
4230                 goto out;
4231
4232         /* The nested attribute uses enum nl80211_band as the index. This maps
4233          * directly to the enum nl80211_band values used in cfg80211.
4234          */
4235         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4236         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4237                 enum nl80211_band band = nla_type(tx_rates);
4238                 int err;
4239
4240                 if (band < 0 || band >= NUM_NL80211_BANDS)
4241                         return -EINVAL;
4242                 sband = rdev->wiphy.bands[band];
4243                 if (sband == NULL)
4244                         return -EINVAL;
4245                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4246                                                   tx_rates,
4247                                                   nl80211_txattr_policy,
4248                                                   info->extack);
4249                 if (err)
4250                         return err;
4251                 if (tb[NL80211_TXRATE_LEGACY]) {
4252                         mask->control[band].legacy = rateset_to_mask(
4253                                 sband,
4254                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4255                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4256                         if ((mask->control[band].legacy == 0) &&
4257                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4258                                 return -EINVAL;
4259                 }
4260                 if (tb[NL80211_TXRATE_HT]) {
4261                         if (!ht_rateset_to_mask(
4262                                         sband,
4263                                         nla_data(tb[NL80211_TXRATE_HT]),
4264                                         nla_len(tb[NL80211_TXRATE_HT]),
4265                                         mask->control[band].ht_mcs))
4266                                 return -EINVAL;
4267                 }
4268                 if (tb[NL80211_TXRATE_VHT]) {
4269                         if (!vht_set_mcs_mask(
4270                                         sband,
4271                                         nla_data(tb[NL80211_TXRATE_VHT]),
4272                                         mask->control[band].vht_mcs))
4273                                 return -EINVAL;
4274                 }
4275                 if (tb[NL80211_TXRATE_GI]) {
4276                         mask->control[band].gi =
4277                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4278                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4279                                 return -EINVAL;
4280                 }
4281
4282                 if (mask->control[band].legacy == 0) {
4283                         /* don't allow empty legacy rates if HT or VHT
4284                          * are not even supported.
4285                          */
4286                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4287                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4288                                 return -EINVAL;
4289
4290                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4291                                 if (mask->control[band].ht_mcs[i])
4292                                         goto out;
4293
4294                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4295                                 if (mask->control[band].vht_mcs[i])
4296                                         goto out;
4297
4298                         /* legacy and mcs rates may not be both empty */
4299                         return -EINVAL;
4300                 }
4301         }
4302
4303 out:
4304         return 0;
4305 }
4306
4307 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4308                                    enum nl80211_band band,
4309                                    struct cfg80211_bitrate_mask *beacon_rate)
4310 {
4311         u32 count_ht, count_vht, i;
4312         u32 rate = beacon_rate->control[band].legacy;
4313
4314         /* Allow only one rate */
4315         if (hweight32(rate) > 1)
4316                 return -EINVAL;
4317
4318         count_ht = 0;
4319         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4320                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4321                         return -EINVAL;
4322                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4323                         count_ht++;
4324                         if (count_ht > 1)
4325                                 return -EINVAL;
4326                 }
4327                 if (count_ht && rate)
4328                         return -EINVAL;
4329         }
4330
4331         count_vht = 0;
4332         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4333                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4334                         return -EINVAL;
4335                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4336                         count_vht++;
4337                         if (count_vht > 1)
4338                                 return -EINVAL;
4339                 }
4340                 if (count_vht && rate)
4341                         return -EINVAL;
4342         }
4343
4344         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4345                 return -EINVAL;
4346
4347         if (rate &&
4348             !wiphy_ext_feature_isset(&rdev->wiphy,
4349                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4350                 return -EINVAL;
4351         if (count_ht &&
4352             !wiphy_ext_feature_isset(&rdev->wiphy,
4353                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4354                 return -EINVAL;
4355         if (count_vht &&
4356             !wiphy_ext_feature_isset(&rdev->wiphy,
4357                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4358                 return -EINVAL;
4359
4360         return 0;
4361 }
4362
4363 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4364                                 struct nlattr *attrs[],
4365                                 struct cfg80211_beacon_data *bcn)
4366 {
4367         bool haveinfo = false;
4368         int err;
4369
4370         memset(bcn, 0, sizeof(*bcn));
4371
4372         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4373                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4374                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4375                 if (!bcn->head_len)
4376                         return -EINVAL;
4377                 haveinfo = true;
4378         }
4379
4380         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4381                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4382                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4383                 haveinfo = true;
4384         }
4385
4386         if (!haveinfo)
4387                 return -EINVAL;
4388
4389         if (attrs[NL80211_ATTR_IE]) {
4390                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4391                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4392         }
4393
4394         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4395                 bcn->proberesp_ies =
4396                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4397                 bcn->proberesp_ies_len =
4398                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4399         }
4400
4401         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4402                 bcn->assocresp_ies =
4403                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4404                 bcn->assocresp_ies_len =
4405                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4406         }
4407
4408         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4409                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4410                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4411         }
4412
4413         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4414                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4415
4416                 err = nla_parse_nested_deprecated(tb,
4417                                                   NL80211_FTM_RESP_ATTR_MAX,
4418                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4419                                                   NULL, NULL);
4420                 if (err)
4421                         return err;
4422
4423                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4424                     wiphy_ext_feature_isset(&rdev->wiphy,
4425                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4426                         bcn->ftm_responder = 1;
4427                 else
4428                         return -EOPNOTSUPP;
4429
4430                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4431                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4432                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4433                 }
4434
4435                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4436                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4437                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4438                 }
4439         } else {
4440                 bcn->ftm_responder = -1;
4441         }
4442
4443         return 0;
4444 }
4445
4446 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4447                                     struct ieee80211_he_obss_pd *he_obss_pd)
4448 {
4449         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4450         int err;
4451
4452         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4453                                he_obss_pd_policy, NULL);
4454         if (err)
4455                 return err;
4456
4457         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4458             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4459                 return -EINVAL;
4460
4461         he_obss_pd->min_offset =
4462                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4463         he_obss_pd->max_offset =
4464                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4465
4466         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4467                 return -EINVAL;
4468
4469         he_obss_pd->enable = true;
4470
4471         return 0;
4472 }
4473
4474 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4475                                             const u8 *rates)
4476 {
4477         int i;
4478
4479         if (!rates)
4480                 return;
4481
4482         for (i = 0; i < rates[1]; i++) {
4483                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4484                         params->ht_required = true;
4485                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4486                         params->vht_required = true;
4487         }
4488 }
4489
4490 /*
4491  * Since the nl80211 API didn't include, from the beginning, attributes about
4492  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4493  * benefit of drivers that rebuild IEs in the firmware.
4494  */
4495 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4496 {
4497         const struct cfg80211_beacon_data *bcn = &params->beacon;
4498         size_t ies_len = bcn->tail_len;
4499         const u8 *ies = bcn->tail;
4500         const u8 *rates;
4501         const u8 *cap;
4502
4503         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4504         nl80211_check_ap_rate_selectors(params, rates);
4505
4506         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4507         nl80211_check_ap_rate_selectors(params, rates);
4508
4509         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4510         if (cap && cap[1] >= sizeof(*params->ht_cap))
4511                 params->ht_cap = (void *)(cap + 2);
4512         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4513         if (cap && cap[1] >= sizeof(*params->vht_cap))
4514                 params->vht_cap = (void *)(cap + 2);
4515         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4516         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4517                 params->he_cap = (void *)(cap + 3);
4518 }
4519
4520 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4521                                    struct cfg80211_ap_settings *params)
4522 {
4523         struct wireless_dev *wdev;
4524         bool ret = false;
4525
4526         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4527                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4528                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4529                         continue;
4530
4531                 if (!wdev->preset_chandef.chan)
4532                         continue;
4533
4534                 params->chandef = wdev->preset_chandef;
4535                 ret = true;
4536                 break;
4537         }
4538
4539         return ret;
4540 }
4541
4542 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4543                                     enum nl80211_auth_type auth_type,
4544                                     enum nl80211_commands cmd)
4545 {
4546         if (auth_type > NL80211_AUTHTYPE_MAX)
4547                 return false;
4548
4549         switch (cmd) {
4550         case NL80211_CMD_AUTHENTICATE:
4551                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4552                     auth_type == NL80211_AUTHTYPE_SAE)
4553                         return false;
4554                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4555                                              NL80211_EXT_FEATURE_FILS_STA) &&
4556                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4557                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4558                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4559                         return false;
4560                 return true;
4561         case NL80211_CMD_CONNECT:
4562                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4563                     !wiphy_ext_feature_isset(&rdev->wiphy,
4564                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4565                     auth_type == NL80211_AUTHTYPE_SAE)
4566                         return false;
4567
4568                 /* FILS with SK PFS or PK not supported yet */
4569                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4570                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4571                         return false;
4572                 if (!wiphy_ext_feature_isset(
4573                             &rdev->wiphy,
4574                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4575                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4576                         return false;
4577                 return true;
4578         case NL80211_CMD_START_AP:
4579                 /* SAE not supported yet */
4580                 if (auth_type == NL80211_AUTHTYPE_SAE)
4581                         return false;
4582                 /* FILS not supported yet */
4583                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4584                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4585                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4586                         return false;
4587                 return true;
4588         default:
4589                 return false;
4590         }
4591 }
4592
4593 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4594 {
4595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4596         struct net_device *dev = info->user_ptr[1];
4597         struct wireless_dev *wdev = dev->ieee80211_ptr;
4598         struct cfg80211_ap_settings params;
4599         int err;
4600
4601         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4602             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4603                 return -EOPNOTSUPP;
4604
4605         if (!rdev->ops->start_ap)
4606                 return -EOPNOTSUPP;
4607
4608         if (wdev->beacon_interval)
4609                 return -EALREADY;
4610
4611         memset(&params, 0, sizeof(params));
4612
4613         /* these are required for START_AP */
4614         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4615             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4616             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4617                 return -EINVAL;
4618
4619         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4620         if (err)
4621                 return err;
4622
4623         params.beacon_interval =
4624                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4625         params.dtim_period =
4626                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4627
4628         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4629                                            params.beacon_interval);
4630         if (err)
4631                 return err;
4632
4633         /*
4634          * In theory, some of these attributes should be required here
4635          * but since they were not used when the command was originally
4636          * added, keep them optional for old user space programs to let
4637          * them continue to work with drivers that do not need the
4638          * additional information -- drivers must check!
4639          */
4640         if (info->attrs[NL80211_ATTR_SSID]) {
4641                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4642                 params.ssid_len =
4643                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4644                 if (params.ssid_len == 0 ||
4645                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4646                         return -EINVAL;
4647         }
4648
4649         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4650                 params.hidden_ssid = nla_get_u32(
4651                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4652
4653         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4654
4655         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4656                 params.auth_type = nla_get_u32(
4657                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4658                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4659                                              NL80211_CMD_START_AP))
4660                         return -EINVAL;
4661         } else
4662                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4663
4664         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4665                                       NL80211_MAX_NR_CIPHER_SUITES);
4666         if (err)
4667                 return err;
4668
4669         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4670                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4671                         return -EOPNOTSUPP;
4672                 params.inactivity_timeout = nla_get_u16(
4673                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4674         }
4675
4676         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4677                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4678                         return -EINVAL;
4679                 params.p2p_ctwindow =
4680                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4681                 if (params.p2p_ctwindow != 0 &&
4682                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4683                         return -EINVAL;
4684         }
4685
4686         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4687                 u8 tmp;
4688
4689                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4690                         return -EINVAL;
4691                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4692                 params.p2p_opp_ps = tmp;
4693                 if (params.p2p_opp_ps != 0 &&
4694                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4695                         return -EINVAL;
4696         }
4697
4698         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4699                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4700                 if (err)
4701                         return err;
4702         } else if (wdev->preset_chandef.chan) {
4703                 params.chandef = wdev->preset_chandef;
4704         } else if (!nl80211_get_ap_channel(rdev, &params))
4705                 return -EINVAL;
4706
4707         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4708                                            wdev->iftype))
4709                 return -EINVAL;
4710
4711         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4712                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4713                 if (err)
4714                         return err;
4715
4716                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4717                                               &params.beacon_rate);
4718                 if (err)
4719                         return err;
4720         }
4721
4722         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4723                 params.smps_mode =
4724                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4725                 switch (params.smps_mode) {
4726                 case NL80211_SMPS_OFF:
4727                         break;
4728                 case NL80211_SMPS_STATIC:
4729                         if (!(rdev->wiphy.features &
4730                               NL80211_FEATURE_STATIC_SMPS))
4731                                 return -EINVAL;
4732                         break;
4733                 case NL80211_SMPS_DYNAMIC:
4734                         if (!(rdev->wiphy.features &
4735                               NL80211_FEATURE_DYNAMIC_SMPS))
4736                                 return -EINVAL;
4737                         break;
4738                 default:
4739                         return -EINVAL;
4740                 }
4741         } else {
4742                 params.smps_mode = NL80211_SMPS_OFF;
4743         }
4744
4745         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4746         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4747                 return -EOPNOTSUPP;
4748
4749         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4750                 params.acl = parse_acl_data(&rdev->wiphy, info);
4751                 if (IS_ERR(params.acl))
4752                         return PTR_ERR(params.acl);
4753         }
4754
4755         params.twt_responder =
4756                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4757
4758         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4759                 err = nl80211_parse_he_obss_pd(
4760                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4761                                         &params.he_obss_pd);
4762                 if (err)
4763                         return err;
4764         }
4765
4766         nl80211_calculate_ap_params(&params);
4767
4768         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4769                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4770
4771         wdev_lock(wdev);
4772         err = rdev_start_ap(rdev, dev, &params);
4773         if (!err) {
4774                 wdev->preset_chandef = params.chandef;
4775                 wdev->beacon_interval = params.beacon_interval;
4776                 wdev->chandef = params.chandef;
4777                 wdev->ssid_len = params.ssid_len;
4778                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4779
4780                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4781                         wdev->conn_owner_nlportid = info->snd_portid;
4782         }
4783         wdev_unlock(wdev);
4784
4785         kfree(params.acl);
4786
4787         return err;
4788 }
4789
4790 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4791 {
4792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4793         struct net_device *dev = info->user_ptr[1];
4794         struct wireless_dev *wdev = dev->ieee80211_ptr;
4795         struct cfg80211_beacon_data params;
4796         int err;
4797
4798         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4799             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4800                 return -EOPNOTSUPP;
4801
4802         if (!rdev->ops->change_beacon)
4803                 return -EOPNOTSUPP;
4804
4805         if (!wdev->beacon_interval)
4806                 return -EINVAL;
4807
4808         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4809         if (err)
4810                 return err;
4811
4812         wdev_lock(wdev);
4813         err = rdev_change_beacon(rdev, dev, &params);
4814         wdev_unlock(wdev);
4815
4816         return err;
4817 }
4818
4819 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4820 {
4821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4822         struct net_device *dev = info->user_ptr[1];
4823
4824         return cfg80211_stop_ap(rdev, dev, false);
4825 }
4826
4827 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4828         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4829         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4830         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4831         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4832         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4833         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4834 };
4835
4836 static int parse_station_flags(struct genl_info *info,
4837                                enum nl80211_iftype iftype,
4838                                struct station_parameters *params)
4839 {
4840         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4841         struct nlattr *nla;
4842         int flag;
4843
4844         /*
4845          * Try parsing the new attribute first so userspace
4846          * can specify both for older kernels.
4847          */
4848         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4849         if (nla) {
4850                 struct nl80211_sta_flag_update *sta_flags;
4851
4852                 sta_flags = nla_data(nla);
4853                 params->sta_flags_mask = sta_flags->mask;
4854                 params->sta_flags_set = sta_flags->set;
4855                 params->sta_flags_set &= params->sta_flags_mask;
4856                 if ((params->sta_flags_mask |
4857                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4858                         return -EINVAL;
4859                 return 0;
4860         }
4861
4862         /* if present, parse the old attribute */
4863
4864         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4865         if (!nla)
4866                 return 0;
4867
4868         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4869                 return -EINVAL;
4870
4871         /*
4872          * Only allow certain flags for interface types so that
4873          * other attributes are silently ignored. Remember that
4874          * this is backward compatibility code with old userspace
4875          * and shouldn't be hit in other cases anyway.
4876          */
4877         switch (iftype) {
4878         case NL80211_IFTYPE_AP:
4879         case NL80211_IFTYPE_AP_VLAN:
4880         case NL80211_IFTYPE_P2P_GO:
4881                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4882                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4883                                          BIT(NL80211_STA_FLAG_WME) |
4884                                          BIT(NL80211_STA_FLAG_MFP);
4885                 break;
4886         case NL80211_IFTYPE_P2P_CLIENT:
4887         case NL80211_IFTYPE_STATION:
4888                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4889                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4890                 break;
4891         case NL80211_IFTYPE_MESH_POINT:
4892                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4893                                          BIT(NL80211_STA_FLAG_MFP) |
4894                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4895                 break;
4896         default:
4897                 return -EINVAL;
4898         }
4899
4900         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4901                 if (flags[flag]) {
4902                         params->sta_flags_set |= (1<<flag);
4903
4904                         /* no longer support new API additions in old API */
4905                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4906                                 return -EINVAL;
4907                 }
4908         }
4909
4910         return 0;
4911 }
4912
4913 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4914 {
4915         struct nlattr *rate;
4916         u32 bitrate;
4917         u16 bitrate_compat;
4918         enum nl80211_rate_info rate_flg;
4919
4920         rate = nla_nest_start_noflag(msg, attr);
4921         if (!rate)
4922                 return false;
4923
4924         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4925         bitrate = cfg80211_calculate_bitrate(info);
4926         /* report 16-bit bitrate only if we can */
4927         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4928         if (bitrate > 0 &&
4929             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4930                 return false;
4931         if (bitrate_compat > 0 &&
4932             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4933                 return false;
4934
4935         switch (info->bw) {
4936         case RATE_INFO_BW_5:
4937                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4938                 break;
4939         case RATE_INFO_BW_10:
4940                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4941                 break;
4942         default:
4943                 WARN_ON(1);
4944                 /* fall through */
4945         case RATE_INFO_BW_20:
4946                 rate_flg = 0;
4947                 break;
4948         case RATE_INFO_BW_40:
4949                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4950                 break;
4951         case RATE_INFO_BW_80:
4952                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4953                 break;
4954         case RATE_INFO_BW_160:
4955                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4956                 break;
4957         case RATE_INFO_BW_HE_RU:
4958                 rate_flg = 0;
4959                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4960         }
4961
4962         if (rate_flg && nla_put_flag(msg, rate_flg))
4963                 return false;
4964
4965         if (info->flags & RATE_INFO_FLAGS_MCS) {
4966                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4967                         return false;
4968                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4969                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4970                         return false;
4971         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4972                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4973                         return false;
4974                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4975                         return false;
4976                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4977                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4978                         return false;
4979         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4980                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4981                         return false;
4982                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4983                         return false;
4984                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4985                         return false;
4986                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4987                         return false;
4988                 if (info->bw == RATE_INFO_BW_HE_RU &&
4989                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4990                                info->he_ru_alloc))
4991                         return false;
4992         }
4993
4994         nla_nest_end(msg, rate);
4995         return true;
4996 }
4997
4998 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4999                                int id)
5000 {
5001         void *attr;
5002         int i = 0;
5003
5004         if (!mask)
5005                 return true;
5006
5007         attr = nla_nest_start_noflag(msg, id);
5008         if (!attr)
5009                 return false;
5010
5011         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5012                 if (!(mask & BIT(i)))
5013                         continue;
5014
5015                 if (nla_put_u8(msg, i, signal[i]))
5016                         return false;
5017         }
5018
5019         nla_nest_end(msg, attr);
5020
5021         return true;
5022 }
5023
5024 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5025                                 u32 seq, int flags,
5026                                 struct cfg80211_registered_device *rdev,
5027                                 struct net_device *dev,
5028                                 const u8 *mac_addr, struct station_info *sinfo)
5029 {
5030         void *hdr;
5031         struct nlattr *sinfoattr, *bss_param;
5032
5033         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5034         if (!hdr) {
5035                 cfg80211_sinfo_release_content(sinfo);
5036                 return -1;
5037         }
5038
5039         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5040             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5041             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5042                 goto nla_put_failure;
5043
5044         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5045         if (!sinfoattr)
5046                 goto nla_put_failure;
5047
5048 #define PUT_SINFO(attr, memb, type) do {                                \
5049         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5050         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5051             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5052                              sinfo->memb))                              \
5053                 goto nla_put_failure;                                   \
5054         } while (0)
5055 #define PUT_SINFO_U64(attr, memb) do {                                  \
5056         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5057             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5058                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5059                 goto nla_put_failure;                                   \
5060         } while (0)
5061
5062         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5063         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5064         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5065
5066         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5067                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5068             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5069                         (u32)sinfo->rx_bytes))
5070                 goto nla_put_failure;
5071
5072         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5073                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5074             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5075                         (u32)sinfo->tx_bytes))
5076                 goto nla_put_failure;
5077
5078         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5079         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5080         PUT_SINFO(LLID, llid, u16);
5081         PUT_SINFO(PLID, plid, u16);
5082         PUT_SINFO(PLINK_STATE, plink_state, u8);
5083         PUT_SINFO_U64(RX_DURATION, rx_duration);
5084         PUT_SINFO_U64(TX_DURATION, tx_duration);
5085
5086         if (wiphy_ext_feature_isset(&rdev->wiphy,
5087                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5088                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5089
5090         switch (rdev->wiphy.signal_type) {
5091         case CFG80211_SIGNAL_TYPE_MBM:
5092                 PUT_SINFO(SIGNAL, signal, u8);
5093                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5094                 break;
5095         default:
5096                 break;
5097         }
5098         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5099                 if (!nl80211_put_signal(msg, sinfo->chains,
5100                                         sinfo->chain_signal,
5101                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5102                         goto nla_put_failure;
5103         }
5104         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5105                 if (!nl80211_put_signal(msg, sinfo->chains,
5106                                         sinfo->chain_signal_avg,
5107                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5108                         goto nla_put_failure;
5109         }
5110         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5111                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5112                                           NL80211_STA_INFO_TX_BITRATE))
5113                         goto nla_put_failure;
5114         }
5115         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5116                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5117                                           NL80211_STA_INFO_RX_BITRATE))
5118                         goto nla_put_failure;
5119         }
5120
5121         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5122         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5123         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5124         PUT_SINFO(TX_FAILED, tx_failed, u32);
5125         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5126         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5127         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5128         PUT_SINFO(LOCAL_PM, local_pm, u32);
5129         PUT_SINFO(PEER_PM, peer_pm, u32);
5130         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5131         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5132
5133         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5134                 bss_param = nla_nest_start_noflag(msg,
5135                                                   NL80211_STA_INFO_BSS_PARAM);
5136                 if (!bss_param)
5137                         goto nla_put_failure;
5138
5139                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5140                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5141                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5142                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5143                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5144                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5145                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5146                                sinfo->bss_param.dtim_period) ||
5147                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5148                                 sinfo->bss_param.beacon_interval))
5149                         goto nla_put_failure;
5150
5151                 nla_nest_end(msg, bss_param);
5152         }
5153         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5154             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5155                     sizeof(struct nl80211_sta_flag_update),
5156                     &sinfo->sta_flags))
5157                 goto nla_put_failure;
5158
5159         PUT_SINFO_U64(T_OFFSET, t_offset);
5160         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5161         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5162         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5163         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5164         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5165         if (wiphy_ext_feature_isset(&rdev->wiphy,
5166                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5167                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5168                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5169         }
5170
5171 #undef PUT_SINFO
5172 #undef PUT_SINFO_U64
5173
5174         if (sinfo->pertid) {
5175                 struct nlattr *tidsattr;
5176                 int tid;
5177
5178                 tidsattr = nla_nest_start_noflag(msg,
5179                                                  NL80211_STA_INFO_TID_STATS);
5180                 if (!tidsattr)
5181                         goto nla_put_failure;
5182
5183                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5184                         struct cfg80211_tid_stats *tidstats;
5185                         struct nlattr *tidattr;
5186
5187                         tidstats = &sinfo->pertid[tid];
5188
5189                         if (!tidstats->filled)
5190                                 continue;
5191
5192                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5193                         if (!tidattr)
5194                                 goto nla_put_failure;
5195
5196 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5197         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5198             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5199                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5200                 goto nla_put_failure;                                   \
5201         } while (0)
5202
5203                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5204                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5205                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5206                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5207
5208 #undef PUT_TIDVAL_U64
5209                         if ((tidstats->filled &
5210                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5211                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5212                                                    NL80211_TID_STATS_TXQ_STATS))
5213                                 goto nla_put_failure;
5214
5215                         nla_nest_end(msg, tidattr);
5216                 }
5217
5218                 nla_nest_end(msg, tidsattr);
5219         }
5220
5221         nla_nest_end(msg, sinfoattr);
5222
5223         if (sinfo->assoc_req_ies_len &&
5224             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5225                     sinfo->assoc_req_ies))
5226                 goto nla_put_failure;
5227
5228         cfg80211_sinfo_release_content(sinfo);
5229         genlmsg_end(msg, hdr);
5230         return 0;
5231
5232  nla_put_failure:
5233         cfg80211_sinfo_release_content(sinfo);
5234         genlmsg_cancel(msg, hdr);
5235         return -EMSGSIZE;
5236 }
5237
5238 static int nl80211_dump_station(struct sk_buff *skb,
5239                                 struct netlink_callback *cb)
5240 {
5241         struct station_info sinfo;
5242         struct cfg80211_registered_device *rdev;
5243         struct wireless_dev *wdev;
5244         u8 mac_addr[ETH_ALEN];
5245         int sta_idx = cb->args[2];
5246         int err;
5247
5248         rtnl_lock();
5249         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5250         if (err)
5251                 goto out_err;
5252
5253         if (!wdev->netdev) {
5254                 err = -EINVAL;
5255                 goto out_err;
5256         }
5257
5258         if (!rdev->ops->dump_station) {
5259                 err = -EOPNOTSUPP;
5260                 goto out_err;
5261         }
5262
5263         while (1) {
5264                 memset(&sinfo, 0, sizeof(sinfo));
5265                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5266                                         mac_addr, &sinfo);
5267                 if (err == -ENOENT)
5268                         break;
5269                 if (err)
5270                         goto out_err;
5271
5272                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5273                                 NETLINK_CB(cb->skb).portid,
5274                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5275                                 rdev, wdev->netdev, mac_addr,
5276                                 &sinfo) < 0)
5277                         goto out;
5278
5279                 sta_idx++;
5280         }
5281
5282  out:
5283         cb->args[2] = sta_idx;
5284         err = skb->len;
5285  out_err:
5286         rtnl_unlock();
5287
5288         return err;
5289 }
5290
5291 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5292 {
5293         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5294         struct net_device *dev = info->user_ptr[1];
5295         struct station_info sinfo;
5296         struct sk_buff *msg;
5297         u8 *mac_addr = NULL;
5298         int err;
5299
5300         memset(&sinfo, 0, sizeof(sinfo));
5301
5302         if (!info->attrs[NL80211_ATTR_MAC])
5303                 return -EINVAL;
5304
5305         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5306
5307         if (!rdev->ops->get_station)
5308                 return -EOPNOTSUPP;
5309
5310         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5311         if (err)
5312                 return err;
5313
5314         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5315         if (!msg) {
5316                 cfg80211_sinfo_release_content(&sinfo);
5317                 return -ENOMEM;
5318         }
5319
5320         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5321                                  info->snd_portid, info->snd_seq, 0,
5322                                  rdev, dev, mac_addr, &sinfo) < 0) {
5323                 nlmsg_free(msg);
5324                 return -ENOBUFS;
5325         }
5326
5327         return genlmsg_reply(msg, info);
5328 }
5329
5330 int cfg80211_check_station_change(struct wiphy *wiphy,
5331                                   struct station_parameters *params,
5332                                   enum cfg80211_station_type statype)
5333 {
5334         if (params->listen_interval != -1 &&
5335             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5336                 return -EINVAL;
5337
5338         if (params->support_p2p_ps != -1 &&
5339             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5340                 return -EINVAL;
5341
5342         if (params->aid &&
5343             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5344             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5345                 return -EINVAL;
5346
5347         /* When you run into this, adjust the code below for the new flag */
5348         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5349
5350         switch (statype) {
5351         case CFG80211_STA_MESH_PEER_KERNEL:
5352         case CFG80211_STA_MESH_PEER_USER:
5353                 /*
5354                  * No ignoring the TDLS flag here -- the userspace mesh
5355                  * code doesn't have the bug of including TDLS in the
5356                  * mask everywhere.
5357                  */
5358                 if (params->sta_flags_mask &
5359                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5360                                   BIT(NL80211_STA_FLAG_MFP) |
5361                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5362                         return -EINVAL;
5363                 break;
5364         case CFG80211_STA_TDLS_PEER_SETUP:
5365         case CFG80211_STA_TDLS_PEER_ACTIVE:
5366                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5367                         return -EINVAL;
5368                 /* ignore since it can't change */
5369                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5370                 break;
5371         default:
5372                 /* disallow mesh-specific things */
5373                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5374                         return -EINVAL;
5375                 if (params->local_pm)
5376                         return -EINVAL;
5377                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5378                         return -EINVAL;
5379         }
5380
5381         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5382             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5383                 /* TDLS can't be set, ... */
5384                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5385                         return -EINVAL;
5386                 /*
5387                  * ... but don't bother the driver with it. This works around
5388                  * a hostapd/wpa_supplicant issue -- it always includes the
5389                  * TLDS_PEER flag in the mask even for AP mode.
5390                  */
5391                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5392         }
5393
5394         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5395             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5396                 /* reject other things that can't change */
5397                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5398                         return -EINVAL;
5399                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5400                         return -EINVAL;
5401                 if (params->supported_rates)
5402                         return -EINVAL;
5403                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5404                     params->he_capa)
5405                         return -EINVAL;
5406         }
5407
5408         if (statype != CFG80211_STA_AP_CLIENT &&
5409             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5410                 if (params->vlan)
5411                         return -EINVAL;
5412         }
5413
5414         switch (statype) {
5415         case CFG80211_STA_AP_MLME_CLIENT:
5416                 /* Use this only for authorizing/unauthorizing a station */
5417                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5418                         return -EOPNOTSUPP;
5419                 break;
5420         case CFG80211_STA_AP_CLIENT:
5421         case CFG80211_STA_AP_CLIENT_UNASSOC:
5422                 /* accept only the listed bits */
5423                 if (params->sta_flags_mask &
5424                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5425                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5426                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5427                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5428                                   BIT(NL80211_STA_FLAG_WME) |
5429                                   BIT(NL80211_STA_FLAG_MFP)))
5430                         return -EINVAL;
5431
5432                 /* but authenticated/associated only if driver handles it */
5433                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5434                     params->sta_flags_mask &
5435                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5436                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5437                         return -EINVAL;
5438                 break;
5439         case CFG80211_STA_IBSS:
5440         case CFG80211_STA_AP_STA:
5441                 /* reject any changes other than AUTHORIZED */
5442                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5443                         return -EINVAL;
5444                 break;
5445         case CFG80211_STA_TDLS_PEER_SETUP:
5446                 /* reject any changes other than AUTHORIZED or WME */
5447                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5448                                                BIT(NL80211_STA_FLAG_WME)))
5449                         return -EINVAL;
5450                 /* force (at least) rates when authorizing */
5451                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5452                     !params->supported_rates)
5453                         return -EINVAL;
5454                 break;
5455         case CFG80211_STA_TDLS_PEER_ACTIVE:
5456                 /* reject any changes */
5457                 return -EINVAL;
5458         case CFG80211_STA_MESH_PEER_KERNEL:
5459                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5460                         return -EINVAL;
5461                 break;
5462         case CFG80211_STA_MESH_PEER_USER:
5463                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5464                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5465                         return -EINVAL;
5466                 break;
5467         }
5468
5469         /*
5470          * Older kernel versions ignored this attribute entirely, so don't
5471          * reject attempts to update it but mark it as unused instead so the
5472          * driver won't look at the data.
5473          */
5474         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5475             statype != CFG80211_STA_TDLS_PEER_SETUP)
5476                 params->opmode_notif_used = false;
5477
5478         return 0;
5479 }
5480 EXPORT_SYMBOL(cfg80211_check_station_change);
5481
5482 /*
5483  * Get vlan interface making sure it is running and on the right wiphy.
5484  */
5485 static struct net_device *get_vlan(struct genl_info *info,
5486                                    struct cfg80211_registered_device *rdev)
5487 {
5488         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5489         struct net_device *v;
5490         int ret;
5491
5492         if (!vlanattr)
5493                 return NULL;
5494
5495         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5496         if (!v)
5497                 return ERR_PTR(-ENODEV);
5498
5499         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5500                 ret = -EINVAL;
5501                 goto error;
5502         }
5503
5504         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5505             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5506             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5507                 ret = -EINVAL;
5508                 goto error;
5509         }
5510
5511         if (!netif_running(v)) {
5512                 ret = -ENETDOWN;
5513                 goto error;
5514         }
5515
5516         return v;
5517  error:
5518         dev_put(v);
5519         return ERR_PTR(ret);
5520 }
5521
5522 static const struct nla_policy
5523 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5524         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5525         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5526 };
5527
5528 static int nl80211_parse_sta_wme(struct genl_info *info,
5529                                  struct station_parameters *params)
5530 {
5531         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5532         struct nlattr *nla;
5533         int err;
5534
5535         /* parse WME attributes if present */
5536         if (!info->attrs[NL80211_ATTR_STA_WME])
5537                 return 0;
5538
5539         nla = info->attrs[NL80211_ATTR_STA_WME];
5540         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5541                                           nl80211_sta_wme_policy,
5542                                           info->extack);
5543         if (err)
5544                 return err;
5545
5546         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5547                 params->uapsd_queues = nla_get_u8(
5548                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5549         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5550                 return -EINVAL;
5551
5552         if (tb[NL80211_STA_WME_MAX_SP])
5553                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5554
5555         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5556                 return -EINVAL;
5557
5558         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5559
5560         return 0;
5561 }
5562
5563 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5564                                       struct station_parameters *params)
5565 {
5566         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5567                 params->supported_channels =
5568                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5569                 params->supported_channels_len =
5570                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5571                 /*
5572                  * Need to include at least one (first channel, number of
5573                  * channels) tuple for each subband, and must have proper
5574                  * tuples for the rest of the data as well.
5575                  */
5576                 if (params->supported_channels_len < 2)
5577                         return -EINVAL;
5578                 if (params->supported_channels_len % 2)
5579                         return -EINVAL;
5580         }
5581
5582         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5583                 params->supported_oper_classes =
5584                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5585                 params->supported_oper_classes_len =
5586                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5587                 /*
5588                  * The value of the Length field of the Supported Operating
5589                  * Classes element is between 2 and 253.
5590                  */
5591                 if (params->supported_oper_classes_len < 2 ||
5592                     params->supported_oper_classes_len > 253)
5593                         return -EINVAL;
5594         }
5595         return 0;
5596 }
5597
5598 static int nl80211_set_station_tdls(struct genl_info *info,
5599                                     struct station_parameters *params)
5600 {
5601         int err;
5602         /* Dummy STA entry gets updated once the peer capabilities are known */
5603         if (info->attrs[NL80211_ATTR_PEER_AID])
5604                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5605         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5606                 params->ht_capa =
5607                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5608         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5609                 params->vht_capa =
5610                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5611         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5612                 params->he_capa =
5613                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5614                 params->he_capa_len =
5615                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5616
5617                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5618                         return -EINVAL;
5619         }
5620
5621         err = nl80211_parse_sta_channel_info(info, params);
5622         if (err)
5623                 return err;
5624
5625         return nl80211_parse_sta_wme(info, params);
5626 }
5627
5628 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5629                                              struct station_parameters *params)
5630 {
5631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5632         int idx;
5633
5634         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5635                 if (!rdev->ops->set_tx_power ||
5636                     !wiphy_ext_feature_isset(&rdev->wiphy,
5637                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5638                         return -EOPNOTSUPP;
5639
5640                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5641                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5642
5643                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5644                         idx = NL80211_ATTR_STA_TX_POWER;
5645
5646                         if (info->attrs[idx])
5647                                 params->txpwr.power =
5648                                         nla_get_s16(info->attrs[idx]);
5649                         else
5650                                 return -EINVAL;
5651                 }
5652                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5653         }
5654
5655         return 0;
5656 }
5657
5658 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5659 {
5660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5661         struct net_device *dev = info->user_ptr[1];
5662         struct station_parameters params;
5663         u8 *mac_addr;
5664         int err;
5665
5666         memset(&params, 0, sizeof(params));
5667
5668         if (!rdev->ops->change_station)
5669                 return -EOPNOTSUPP;
5670
5671         /*
5672          * AID and listen_interval properties can be set only for unassociated
5673          * station. Include these parameters here and will check them in
5674          * cfg80211_check_station_change().
5675          */
5676         if (info->attrs[NL80211_ATTR_STA_AID])
5677                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5678
5679         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5680                 params.listen_interval =
5681                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5682         else
5683                 params.listen_interval = -1;
5684
5685         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5686                 params.support_p2p_ps =
5687                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5688         else
5689                 params.support_p2p_ps = -1;
5690
5691         if (!info->attrs[NL80211_ATTR_MAC])
5692                 return -EINVAL;
5693
5694         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5695
5696         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5697                 params.supported_rates =
5698                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5699                 params.supported_rates_len =
5700                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5701         }
5702
5703         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5704                 params.capability =
5705                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5706                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5707         }
5708
5709         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5710                 params.ext_capab =
5711                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5712                 params.ext_capab_len =
5713                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5714         }
5715
5716         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5717                 return -EINVAL;
5718
5719         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5720                 params.plink_action =
5721                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5722
5723         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5724                 params.plink_state =
5725                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5726                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5727                         params.peer_aid = nla_get_u16(
5728                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5729                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5730         }
5731
5732         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5733                 params.local_pm = nla_get_u32(
5734                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5735
5736         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5737                 params.opmode_notif_used = true;
5738                 params.opmode_notif =
5739                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5740         }
5741
5742         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5743                 params.airtime_weight =
5744                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5745
5746         if (params.airtime_weight &&
5747             !wiphy_ext_feature_isset(&rdev->wiphy,
5748                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5749                 return -EOPNOTSUPP;
5750
5751         err = nl80211_parse_sta_txpower_setting(info, &params);
5752         if (err)
5753                 return err;
5754
5755         /* Include parameters for TDLS peer (will check later) */
5756         err = nl80211_set_station_tdls(info, &params);
5757         if (err)
5758                 return err;
5759
5760         params.vlan = get_vlan(info, rdev);
5761         if (IS_ERR(params.vlan))
5762                 return PTR_ERR(params.vlan);
5763
5764         switch (dev->ieee80211_ptr->iftype) {
5765         case NL80211_IFTYPE_AP:
5766         case NL80211_IFTYPE_AP_VLAN:
5767         case NL80211_IFTYPE_P2P_GO:
5768         case NL80211_IFTYPE_P2P_CLIENT:
5769         case NL80211_IFTYPE_STATION:
5770         case NL80211_IFTYPE_ADHOC:
5771         case NL80211_IFTYPE_MESH_POINT:
5772                 break;
5773         default:
5774                 err = -EOPNOTSUPP;
5775                 goto out_put_vlan;
5776         }
5777
5778         /* driver will call cfg80211_check_station_change() */
5779         err = rdev_change_station(rdev, dev, mac_addr, &params);
5780
5781  out_put_vlan:
5782         if (params.vlan)
5783                 dev_put(params.vlan);
5784
5785         return err;
5786 }
5787
5788 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5789 {
5790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5791         int err;
5792         struct net_device *dev = info->user_ptr[1];
5793         struct station_parameters params;
5794         u8 *mac_addr = NULL;
5795         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5796                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5797
5798         memset(&params, 0, sizeof(params));
5799
5800         if (!rdev->ops->add_station)
5801                 return -EOPNOTSUPP;
5802
5803         if (!info->attrs[NL80211_ATTR_MAC])
5804                 return -EINVAL;
5805
5806         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5807                 return -EINVAL;
5808
5809         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5810                 return -EINVAL;
5811
5812         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5813             !info->attrs[NL80211_ATTR_PEER_AID])
5814                 return -EINVAL;
5815
5816         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5817         params.supported_rates =
5818                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5819         params.supported_rates_len =
5820                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5821         params.listen_interval =
5822                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5823
5824         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5825                 params.support_p2p_ps =
5826                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5827         } else {
5828                 /*
5829                  * if not specified, assume it's supported for P2P GO interface,
5830                  * and is NOT supported for AP interface
5831                  */
5832                 params.support_p2p_ps =
5833                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5834         }
5835
5836         if (info->attrs[NL80211_ATTR_PEER_AID])
5837                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5838         else
5839                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5840
5841         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5842                 params.capability =
5843                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5844                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5845         }
5846
5847         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5848                 params.ext_capab =
5849                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5850                 params.ext_capab_len =
5851                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5852         }
5853
5854         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5855                 params.ht_capa =
5856                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5857
5858         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5859                 params.vht_capa =
5860                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5861
5862         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5863                 params.he_capa =
5864                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5865                 params.he_capa_len =
5866                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5867
5868                 /* max len is validated in nla policy */
5869                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5870                         return -EINVAL;
5871         }
5872
5873         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5874                 params.opmode_notif_used = true;
5875                 params.opmode_notif =
5876                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5877         }
5878
5879         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5880                 params.plink_action =
5881                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5882
5883         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5884                 params.airtime_weight =
5885                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5886
5887         if (params.airtime_weight &&
5888             !wiphy_ext_feature_isset(&rdev->wiphy,
5889                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5890                 return -EOPNOTSUPP;
5891
5892         err = nl80211_parse_sta_txpower_setting(info, &params);
5893         if (err)
5894                 return err;
5895
5896         err = nl80211_parse_sta_channel_info(info, &params);
5897         if (err)
5898                 return err;
5899
5900         err = nl80211_parse_sta_wme(info, &params);
5901         if (err)
5902                 return err;
5903
5904         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5905                 return -EINVAL;
5906
5907         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5908          * as userspace might just pass through the capabilities from the IEs
5909          * directly, rather than enforcing this restriction and returning an
5910          * error in this case.
5911          */
5912         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5913                 params.ht_capa = NULL;
5914                 params.vht_capa = NULL;
5915
5916                 /* HE requires WME */
5917                 if (params.he_capa_len)
5918                         return -EINVAL;
5919         }
5920
5921         /* When you run into this, adjust the code below for the new flag */
5922         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5923
5924         switch (dev->ieee80211_ptr->iftype) {
5925         case NL80211_IFTYPE_AP:
5926         case NL80211_IFTYPE_AP_VLAN:
5927         case NL80211_IFTYPE_P2P_GO:
5928                 /* ignore WME attributes if iface/sta is not capable */
5929                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5930                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5931                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5932
5933                 /* TDLS peers cannot be added */
5934                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5935                     info->attrs[NL80211_ATTR_PEER_AID])
5936                         return -EINVAL;
5937                 /* but don't bother the driver with it */
5938                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5939
5940                 /* allow authenticated/associated only if driver handles it */
5941                 if (!(rdev->wiphy.features &
5942                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5943                     params.sta_flags_mask & auth_assoc)
5944                         return -EINVAL;
5945
5946                 /* Older userspace, or userspace wanting to be compatible with
5947                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5948                  * and assoc flags in the mask, but assumes the station will be
5949                  * added as associated anyway since this was the required driver
5950                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5951                  * introduced.
5952                  * In order to not bother drivers with this quirk in the API
5953                  * set the flags in both the mask and set for new stations in
5954                  * this case.
5955                  */
5956                 if (!(params.sta_flags_mask & auth_assoc)) {
5957                         params.sta_flags_mask |= auth_assoc;
5958                         params.sta_flags_set |= auth_assoc;
5959                 }
5960
5961                 /* must be last in here for error handling */
5962                 params.vlan = get_vlan(info, rdev);
5963                 if (IS_ERR(params.vlan))
5964                         return PTR_ERR(params.vlan);
5965                 break;
5966         case NL80211_IFTYPE_MESH_POINT:
5967                 /* ignore uAPSD data */
5968                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5969
5970                 /* associated is disallowed */
5971                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5972                         return -EINVAL;
5973                 /* TDLS peers cannot be added */
5974                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5975                     info->attrs[NL80211_ATTR_PEER_AID])
5976                         return -EINVAL;
5977                 break;
5978         case NL80211_IFTYPE_STATION:
5979         case NL80211_IFTYPE_P2P_CLIENT:
5980                 /* ignore uAPSD data */
5981                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5982
5983                 /* these are disallowed */
5984                 if (params.sta_flags_mask &
5985                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5986                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5987                         return -EINVAL;
5988                 /* Only TDLS peers can be added */
5989                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5990                         return -EINVAL;
5991                 /* Can only add if TDLS ... */
5992                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5993                         return -EOPNOTSUPP;
5994                 /* ... with external setup is supported */
5995                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5996                         return -EOPNOTSUPP;
5997                 /*
5998                  * Older wpa_supplicant versions always mark the TDLS peer
5999                  * as authorized, but it shouldn't yet be.
6000                  */
6001                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6002                 break;
6003         default:
6004                 return -EOPNOTSUPP;
6005         }
6006
6007         /* be aware of params.vlan when changing code here */
6008
6009         err = rdev_add_station(rdev, dev, mac_addr, &params);
6010
6011         if (params.vlan)
6012                 dev_put(params.vlan);
6013         return err;
6014 }
6015
6016 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6017 {
6018         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6019         struct net_device *dev = info->user_ptr[1];
6020         struct station_del_parameters params;
6021
6022         memset(&params, 0, sizeof(params));
6023
6024         if (info->attrs[NL80211_ATTR_MAC])
6025                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6026
6027         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6028             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6029             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6030             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6031                 return -EINVAL;
6032
6033         if (!rdev->ops->del_station)
6034                 return -EOPNOTSUPP;
6035
6036         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6037                 params.subtype =
6038                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6039                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6040                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6041                         return -EINVAL;
6042         } else {
6043                 /* Default to Deauthentication frame */
6044                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6045         }
6046
6047         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6048                 params.reason_code =
6049                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6050                 if (params.reason_code == 0)
6051                         return -EINVAL; /* 0 is reserved */
6052         } else {
6053                 /* Default to reason code 2 */
6054                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6055         }
6056
6057         return rdev_del_station(rdev, dev, &params);
6058 }
6059
6060 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6061                                 int flags, struct net_device *dev,
6062                                 u8 *dst, u8 *next_hop,
6063                                 struct mpath_info *pinfo)
6064 {
6065         void *hdr;
6066         struct nlattr *pinfoattr;
6067
6068         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6069         if (!hdr)
6070                 return -1;
6071
6072         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6073             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6074             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6075             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6076                 goto nla_put_failure;
6077
6078         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6079         if (!pinfoattr)
6080                 goto nla_put_failure;
6081         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6082             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6083                         pinfo->frame_qlen))
6084                 goto nla_put_failure;
6085         if (((pinfo->filled & MPATH_INFO_SN) &&
6086              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6087             ((pinfo->filled & MPATH_INFO_METRIC) &&
6088              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6089                          pinfo->metric)) ||
6090             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6091              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6092                          pinfo->exptime)) ||
6093             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6094              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6095                         pinfo->flags)) ||
6096             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6097              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6098                          pinfo->discovery_timeout)) ||
6099             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6100              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6101                         pinfo->discovery_retries)) ||
6102             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6103              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6104                         pinfo->hop_count)) ||
6105             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6106              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6107                          pinfo->path_change_count)))
6108                 goto nla_put_failure;
6109
6110         nla_nest_end(msg, pinfoattr);
6111
6112         genlmsg_end(msg, hdr);
6113         return 0;
6114
6115  nla_put_failure:
6116         genlmsg_cancel(msg, hdr);
6117         return -EMSGSIZE;
6118 }
6119
6120 static int nl80211_dump_mpath(struct sk_buff *skb,
6121                               struct netlink_callback *cb)
6122 {
6123         struct mpath_info pinfo;
6124         struct cfg80211_registered_device *rdev;
6125         struct wireless_dev *wdev;
6126         u8 dst[ETH_ALEN];
6127         u8 next_hop[ETH_ALEN];
6128         int path_idx = cb->args[2];
6129         int err;
6130
6131         rtnl_lock();
6132         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6133         if (err)
6134                 goto out_err;
6135
6136         if (!rdev->ops->dump_mpath) {
6137                 err = -EOPNOTSUPP;
6138                 goto out_err;
6139         }
6140
6141         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6142                 err = -EOPNOTSUPP;
6143                 goto out_err;
6144         }
6145
6146         while (1) {
6147                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6148                                       next_hop, &pinfo);
6149                 if (err == -ENOENT)
6150                         break;
6151                 if (err)
6152                         goto out_err;
6153
6154                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6155                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6156                                        wdev->netdev, dst, next_hop,
6157                                        &pinfo) < 0)
6158                         goto out;
6159
6160                 path_idx++;
6161         }
6162
6163  out:
6164         cb->args[2] = path_idx;
6165         err = skb->len;
6166  out_err:
6167         rtnl_unlock();
6168         return err;
6169 }
6170
6171 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6172 {
6173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6174         int err;
6175         struct net_device *dev = info->user_ptr[1];
6176         struct mpath_info pinfo;
6177         struct sk_buff *msg;
6178         u8 *dst = NULL;
6179         u8 next_hop[ETH_ALEN];
6180
6181         memset(&pinfo, 0, sizeof(pinfo));
6182
6183         if (!info->attrs[NL80211_ATTR_MAC])
6184                 return -EINVAL;
6185
6186         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6187
6188         if (!rdev->ops->get_mpath)
6189                 return -EOPNOTSUPP;
6190
6191         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6192                 return -EOPNOTSUPP;
6193
6194         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6195         if (err)
6196                 return err;
6197
6198         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6199         if (!msg)
6200                 return -ENOMEM;
6201
6202         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6203                                  dev, dst, next_hop, &pinfo) < 0) {
6204                 nlmsg_free(msg);
6205                 return -ENOBUFS;
6206         }
6207
6208         return genlmsg_reply(msg, info);
6209 }
6210
6211 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6212 {
6213         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6214         struct net_device *dev = info->user_ptr[1];
6215         u8 *dst = NULL;
6216         u8 *next_hop = NULL;
6217
6218         if (!info->attrs[NL80211_ATTR_MAC])
6219                 return -EINVAL;
6220
6221         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6222                 return -EINVAL;
6223
6224         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6225         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6226
6227         if (!rdev->ops->change_mpath)
6228                 return -EOPNOTSUPP;
6229
6230         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6231                 return -EOPNOTSUPP;
6232
6233         return rdev_change_mpath(rdev, dev, dst, next_hop);
6234 }
6235
6236 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6237 {
6238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6239         struct net_device *dev = info->user_ptr[1];
6240         u8 *dst = NULL;
6241         u8 *next_hop = NULL;
6242
6243         if (!info->attrs[NL80211_ATTR_MAC])
6244                 return -EINVAL;
6245
6246         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6247                 return -EINVAL;
6248
6249         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6250         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6251
6252         if (!rdev->ops->add_mpath)
6253                 return -EOPNOTSUPP;
6254
6255         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6256                 return -EOPNOTSUPP;
6257
6258         return rdev_add_mpath(rdev, dev, dst, next_hop);
6259 }
6260
6261 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6262 {
6263         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6264         struct net_device *dev = info->user_ptr[1];
6265         u8 *dst = NULL;
6266
6267         if (info->attrs[NL80211_ATTR_MAC])
6268                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6269
6270         if (!rdev->ops->del_mpath)
6271                 return -EOPNOTSUPP;
6272
6273         return rdev_del_mpath(rdev, dev, dst);
6274 }
6275
6276 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6277 {
6278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6279         int err;
6280         struct net_device *dev = info->user_ptr[1];
6281         struct mpath_info pinfo;
6282         struct sk_buff *msg;
6283         u8 *dst = NULL;
6284         u8 mpp[ETH_ALEN];
6285
6286         memset(&pinfo, 0, sizeof(pinfo));
6287
6288         if (!info->attrs[NL80211_ATTR_MAC])
6289                 return -EINVAL;
6290
6291         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6292
6293         if (!rdev->ops->get_mpp)
6294                 return -EOPNOTSUPP;
6295
6296         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6297                 return -EOPNOTSUPP;
6298
6299         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6300         if (err)
6301                 return err;
6302
6303         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6304         if (!msg)
6305                 return -ENOMEM;
6306
6307         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6308                                dev, dst, mpp, &pinfo) < 0) {
6309                 nlmsg_free(msg);
6310                 return -ENOBUFS;
6311         }
6312
6313         return genlmsg_reply(msg, info);
6314 }
6315
6316 static int nl80211_dump_mpp(struct sk_buff *skb,
6317                             struct netlink_callback *cb)
6318 {
6319         struct mpath_info pinfo;
6320         struct cfg80211_registered_device *rdev;
6321         struct wireless_dev *wdev;
6322         u8 dst[ETH_ALEN];
6323         u8 mpp[ETH_ALEN];
6324         int path_idx = cb->args[2];
6325         int err;
6326
6327         rtnl_lock();
6328         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6329         if (err)
6330                 goto out_err;
6331
6332         if (!rdev->ops->dump_mpp) {
6333                 err = -EOPNOTSUPP;
6334                 goto out_err;
6335         }
6336
6337         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6338                 err = -EOPNOTSUPP;
6339                 goto out_err;
6340         }
6341
6342         while (1) {
6343                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6344                                     mpp, &pinfo);
6345                 if (err == -ENOENT)
6346                         break;
6347                 if (err)
6348                         goto out_err;
6349
6350                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6351                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6352                                        wdev->netdev, dst, mpp,
6353                                        &pinfo) < 0)
6354                         goto out;
6355
6356                 path_idx++;
6357         }
6358
6359  out:
6360         cb->args[2] = path_idx;
6361         err = skb->len;
6362  out_err:
6363         rtnl_unlock();
6364         return err;
6365 }
6366
6367 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6368 {
6369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6370         struct net_device *dev = info->user_ptr[1];
6371         struct wireless_dev *wdev = dev->ieee80211_ptr;
6372         struct bss_parameters params;
6373         int err;
6374
6375         memset(&params, 0, sizeof(params));
6376         /* default to not changing parameters */
6377         params.use_cts_prot = -1;
6378         params.use_short_preamble = -1;
6379         params.use_short_slot_time = -1;
6380         params.ap_isolate = -1;
6381         params.ht_opmode = -1;
6382         params.p2p_ctwindow = -1;
6383         params.p2p_opp_ps = -1;
6384
6385         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6386                 params.use_cts_prot =
6387                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6388         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6389                 params.use_short_preamble =
6390                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6391         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6392                 params.use_short_slot_time =
6393                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6394         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6395                 params.basic_rates =
6396                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6397                 params.basic_rates_len =
6398                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6399         }
6400         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6401                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6402         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6403                 params.ht_opmode =
6404                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6405
6406         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6407                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6408                         return -EINVAL;
6409                 params.p2p_ctwindow =
6410                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6411                 if (params.p2p_ctwindow != 0 &&
6412                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6413                         return -EINVAL;
6414         }
6415
6416         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6417                 u8 tmp;
6418
6419                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6420                         return -EINVAL;
6421                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6422                 params.p2p_opp_ps = tmp;
6423                 if (params.p2p_opp_ps &&
6424                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6425                         return -EINVAL;
6426         }
6427
6428         if (!rdev->ops->change_bss)
6429                 return -EOPNOTSUPP;
6430
6431         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6432             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6433                 return -EOPNOTSUPP;
6434
6435         wdev_lock(wdev);
6436         err = rdev_change_bss(rdev, dev, &params);
6437         wdev_unlock(wdev);
6438
6439         return err;
6440 }
6441
6442 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6443 {
6444         char *data = NULL;
6445         bool is_indoor;
6446         enum nl80211_user_reg_hint_type user_reg_hint_type;
6447         u32 owner_nlportid;
6448
6449         /*
6450          * You should only get this when cfg80211 hasn't yet initialized
6451          * completely when built-in to the kernel right between the time
6452          * window between nl80211_init() and regulatory_init(), if that is
6453          * even possible.
6454          */
6455         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6456                 return -EINPROGRESS;
6457
6458         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6459                 user_reg_hint_type =
6460                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6461         else
6462                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6463
6464         switch (user_reg_hint_type) {
6465         case NL80211_USER_REG_HINT_USER:
6466         case NL80211_USER_REG_HINT_CELL_BASE:
6467                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6468                         return -EINVAL;
6469
6470                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6471                 return regulatory_hint_user(data, user_reg_hint_type);
6472         case NL80211_USER_REG_HINT_INDOOR:
6473                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6474                         owner_nlportid = info->snd_portid;
6475                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6476                 } else {
6477                         owner_nlportid = 0;
6478                         is_indoor = true;
6479                 }
6480
6481                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6482         default:
6483                 return -EINVAL;
6484         }
6485 }
6486
6487 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6488 {
6489         return reg_reload_regdb();
6490 }
6491
6492 static int nl80211_get_mesh_config(struct sk_buff *skb,
6493                                    struct genl_info *info)
6494 {
6495         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6496         struct net_device *dev = info->user_ptr[1];
6497         struct wireless_dev *wdev = dev->ieee80211_ptr;
6498         struct mesh_config cur_params;
6499         int err = 0;
6500         void *hdr;
6501         struct nlattr *pinfoattr;
6502         struct sk_buff *msg;
6503
6504         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6505                 return -EOPNOTSUPP;
6506
6507         if (!rdev->ops->get_mesh_config)
6508                 return -EOPNOTSUPP;
6509
6510         wdev_lock(wdev);
6511         /* If not connected, get default parameters */
6512         if (!wdev->mesh_id_len)
6513                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6514         else
6515                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6516         wdev_unlock(wdev);
6517
6518         if (err)
6519                 return err;
6520
6521         /* Draw up a netlink message to send back */
6522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6523         if (!msg)
6524                 return -ENOMEM;
6525         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6526                              NL80211_CMD_GET_MESH_CONFIG);
6527         if (!hdr)
6528                 goto out;
6529         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6530         if (!pinfoattr)
6531                 goto nla_put_failure;
6532         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6533             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6534                         cur_params.dot11MeshRetryTimeout) ||
6535             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6536                         cur_params.dot11MeshConfirmTimeout) ||
6537             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6538                         cur_params.dot11MeshHoldingTimeout) ||
6539             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6540                         cur_params.dot11MeshMaxPeerLinks) ||
6541             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6542                        cur_params.dot11MeshMaxRetries) ||
6543             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6544                        cur_params.dot11MeshTTL) ||
6545             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6546                        cur_params.element_ttl) ||
6547             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6548                        cur_params.auto_open_plinks) ||
6549             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6550                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6551             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6552                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6553             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6554                         cur_params.path_refresh_time) ||
6555             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6556                         cur_params.min_discovery_timeout) ||
6557             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6558                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6559             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6560                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6561             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6562                         cur_params.dot11MeshHWMPperrMinInterval) ||
6563             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6564                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6565             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6566                        cur_params.dot11MeshHWMPRootMode) ||
6567             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6568                         cur_params.dot11MeshHWMPRannInterval) ||
6569             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6570                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6571             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6572                        cur_params.dot11MeshForwarding) ||
6573             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6574                         cur_params.rssi_threshold) ||
6575             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6576                         cur_params.ht_opmode) ||
6577             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6578                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6579             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6580                         cur_params.dot11MeshHWMProotInterval) ||
6581             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6582                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6583             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6584                         cur_params.power_mode) ||
6585             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6586                         cur_params.dot11MeshAwakeWindowDuration) ||
6587             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6588                         cur_params.plink_timeout) ||
6589             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6590                        cur_params.dot11MeshConnectedToMeshGate))
6591                 goto nla_put_failure;
6592         nla_nest_end(msg, pinfoattr);
6593         genlmsg_end(msg, hdr);
6594         return genlmsg_reply(msg, info);
6595
6596  nla_put_failure:
6597  out:
6598         nlmsg_free(msg);
6599         return -ENOBUFS;
6600 }
6601
6602 static const struct nla_policy
6603 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6604         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6605                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6606         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6607                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6608         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6609                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6610         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6611                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6612         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6613         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6614         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6615         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6616         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6617                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6618         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6619         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6620         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6621         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6622         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6623                 NLA_POLICY_MIN(NLA_U16, 1),
6624         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6625                 NLA_POLICY_MIN(NLA_U16, 1),
6626         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6627                 NLA_POLICY_MIN(NLA_U16, 1),
6628         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6629         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6630                 NLA_POLICY_MIN(NLA_U16, 1),
6631         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6632         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6633         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6634                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6635         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6636         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6637         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6638                 NLA_POLICY_MIN(NLA_U16, 1),
6639         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6640                 NLA_POLICY_MIN(NLA_U16, 1),
6641         [NL80211_MESHCONF_POWER_MODE] =
6642                 NLA_POLICY_RANGE(NLA_U32,
6643                                  NL80211_MESH_POWER_ACTIVE,
6644                                  NL80211_MESH_POWER_MAX),
6645         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6646         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6647         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6648 };
6649
6650 static const struct nla_policy
6651         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6652         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6653         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6654         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6655         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6656         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6657         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6658         [NL80211_MESH_SETUP_IE] =
6659                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6660                                        IEEE80211_MAX_DATA_LEN),
6661         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6662 };
6663
6664 static int nl80211_parse_mesh_config(struct genl_info *info,
6665                                      struct mesh_config *cfg,
6666                                      u32 *mask_out)
6667 {
6668         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6669         u32 mask = 0;
6670         u16 ht_opmode;
6671
6672 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6673 do {                                                                    \
6674         if (tb[attr]) {                                                 \
6675                 cfg->param = fn(tb[attr]);                              \
6676                 mask |= BIT((attr) - 1);                                \
6677         }                                                               \
6678 } while (0)
6679
6680         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6681                 return -EINVAL;
6682         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6683                 return -EINVAL;
6684
6685         /* This makes sure that there aren't more than 32 mesh config
6686          * parameters (otherwise our bitfield scheme would not work.) */
6687         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6688
6689         /* Fill in the params struct */
6690         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6691                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6692         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6693                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6694                                   nla_get_u16);
6695         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6696                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6697                                   nla_get_u16);
6698         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6699                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6700                                   nla_get_u16);
6701         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6702                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6703         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6704                                   NL80211_MESHCONF_TTL, nla_get_u8);
6705         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6706                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6707         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6708                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6709                                   nla_get_u8);
6710         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6711                                   mask,
6712                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6713                                   nla_get_u32);
6714         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6715                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6716                                   nla_get_u8);
6717         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6718                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6719                                   nla_get_u32);
6720         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6721             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6722                 return -EINVAL;
6723         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6724                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6725                                   nla_get_u16);
6726         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6727                                   mask,
6728                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6729                                   nla_get_u32);
6730         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6731             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6732              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6733                 return -EINVAL;
6734         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6735                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6736                                   nla_get_u16);
6737         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6738                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6739                                   nla_get_u16);
6740         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6741                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6742                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6743                                   nla_get_u16);
6744         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6745                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6746         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6747                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6748                                   nla_get_u16);
6749         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6750                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6751                                   nla_get_u8);
6752         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6753                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6755                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6756                                   nla_get_s32);
6757         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6758                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6759                                   nla_get_u8);
6760         /*
6761          * Check HT operation mode based on
6762          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6763          */
6764         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6765                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6766
6767                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6768                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6769                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6770                         return -EINVAL;
6771
6772                 /* NON_HT_STA bit is reserved, but some programs set it */
6773                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6774
6775                 cfg->ht_opmode = ht_opmode;
6776                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6777         }
6778         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6779                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6780                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6781                                   nla_get_u32);
6782         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6783             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6784              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6785                 return -EINVAL;
6786         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6787                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6788                                   nla_get_u16);
6789         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6790                                   mask,
6791                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6792                                   nla_get_u16);
6793         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6794                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6796                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6797         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6798                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6799         if (mask_out)
6800                 *mask_out = mask;
6801
6802         return 0;
6803
6804 #undef FILL_IN_MESH_PARAM_IF_SET
6805 }
6806
6807 static int nl80211_parse_mesh_setup(struct genl_info *info,
6808                                      struct mesh_setup *setup)
6809 {
6810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6811         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6812
6813         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6814                 return -EINVAL;
6815         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6816                 return -EINVAL;
6817
6818         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6819                 setup->sync_method =
6820                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6821                  IEEE80211_SYNC_METHOD_VENDOR :
6822                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6823
6824         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6825                 setup->path_sel_proto =
6826                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6827                  IEEE80211_PATH_PROTOCOL_VENDOR :
6828                  IEEE80211_PATH_PROTOCOL_HWMP;
6829
6830         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6831                 setup->path_metric =
6832                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6833                  IEEE80211_PATH_METRIC_VENDOR :
6834                  IEEE80211_PATH_METRIC_AIRTIME;
6835
6836         if (tb[NL80211_MESH_SETUP_IE]) {
6837                 struct nlattr *ieattr =
6838                         tb[NL80211_MESH_SETUP_IE];
6839                 setup->ie = nla_data(ieattr);
6840                 setup->ie_len = nla_len(ieattr);
6841         }
6842         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6843             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6844                 return -EINVAL;
6845         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6846         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6847         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6848         if (setup->is_secure)
6849                 setup->user_mpm = true;
6850
6851         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6852                 if (!setup->user_mpm)
6853                         return -EINVAL;
6854                 setup->auth_id =
6855                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6856         }
6857
6858         return 0;
6859 }
6860
6861 static int nl80211_update_mesh_config(struct sk_buff *skb,
6862                                       struct genl_info *info)
6863 {
6864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6865         struct net_device *dev = info->user_ptr[1];
6866         struct wireless_dev *wdev = dev->ieee80211_ptr;
6867         struct mesh_config cfg;
6868         u32 mask;
6869         int err;
6870
6871         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6872                 return -EOPNOTSUPP;
6873
6874         if (!rdev->ops->update_mesh_config)
6875                 return -EOPNOTSUPP;
6876
6877         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6878         if (err)
6879                 return err;
6880
6881         wdev_lock(wdev);
6882         if (!wdev->mesh_id_len)
6883                 err = -ENOLINK;
6884
6885         if (!err)
6886                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6887
6888         wdev_unlock(wdev);
6889
6890         return err;
6891 }
6892
6893 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6894                               struct sk_buff *msg)
6895 {
6896         struct nlattr *nl_reg_rules;
6897         unsigned int i;
6898
6899         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6900             (regdom->dfs_region &&
6901              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6902                 goto nla_put_failure;
6903
6904         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6905         if (!nl_reg_rules)
6906                 goto nla_put_failure;
6907
6908         for (i = 0; i < regdom->n_reg_rules; i++) {
6909                 struct nlattr *nl_reg_rule;
6910                 const struct ieee80211_reg_rule *reg_rule;
6911                 const struct ieee80211_freq_range *freq_range;
6912                 const struct ieee80211_power_rule *power_rule;
6913                 unsigned int max_bandwidth_khz;
6914
6915                 reg_rule = &regdom->reg_rules[i];
6916                 freq_range = &reg_rule->freq_range;
6917                 power_rule = &reg_rule->power_rule;
6918
6919                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6920                 if (!nl_reg_rule)
6921                         goto nla_put_failure;
6922
6923                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6924                 if (!max_bandwidth_khz)
6925                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6926                                                                   reg_rule);
6927
6928                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6929                                 reg_rule->flags) ||
6930                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6931                                 freq_range->start_freq_khz) ||
6932                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6933                                 freq_range->end_freq_khz) ||
6934                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6935                                 max_bandwidth_khz) ||
6936                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6937                                 power_rule->max_antenna_gain) ||
6938                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6939                                 power_rule->max_eirp) ||
6940                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6941                                 reg_rule->dfs_cac_ms))
6942                         goto nla_put_failure;
6943
6944                 nla_nest_end(msg, nl_reg_rule);
6945         }
6946
6947         nla_nest_end(msg, nl_reg_rules);
6948         return 0;
6949
6950 nla_put_failure:
6951         return -EMSGSIZE;
6952 }
6953
6954 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6955 {
6956         const struct ieee80211_regdomain *regdom = NULL;
6957         struct cfg80211_registered_device *rdev;
6958         struct wiphy *wiphy = NULL;
6959         struct sk_buff *msg;
6960         void *hdr;
6961
6962         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6963         if (!msg)
6964                 return -ENOBUFS;
6965
6966         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6967                              NL80211_CMD_GET_REG);
6968         if (!hdr)
6969                 goto put_failure;
6970
6971         if (info->attrs[NL80211_ATTR_WIPHY]) {
6972                 bool self_managed;
6973
6974                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6975                 if (IS_ERR(rdev)) {
6976                         nlmsg_free(msg);
6977                         return PTR_ERR(rdev);
6978                 }
6979
6980                 wiphy = &rdev->wiphy;
6981                 self_managed = wiphy->regulatory_flags &
6982                                REGULATORY_WIPHY_SELF_MANAGED;
6983                 regdom = get_wiphy_regdom(wiphy);
6984
6985                 /* a self-managed-reg device must have a private regdom */
6986                 if (WARN_ON(!regdom && self_managed)) {
6987                         nlmsg_free(msg);
6988                         return -EINVAL;
6989                 }
6990
6991                 if (regdom &&
6992                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6993                         goto nla_put_failure;
6994         }
6995
6996         if (!wiphy && reg_last_request_cell_base() &&
6997             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6998                         NL80211_USER_REG_HINT_CELL_BASE))
6999                 goto nla_put_failure;
7000
7001         rcu_read_lock();
7002
7003         if (!regdom)
7004                 regdom = rcu_dereference(cfg80211_regdomain);
7005
7006         if (nl80211_put_regdom(regdom, msg))
7007                 goto nla_put_failure_rcu;
7008
7009         rcu_read_unlock();
7010
7011         genlmsg_end(msg, hdr);
7012         return genlmsg_reply(msg, info);
7013
7014 nla_put_failure_rcu:
7015         rcu_read_unlock();
7016 nla_put_failure:
7017 put_failure:
7018         nlmsg_free(msg);
7019         return -EMSGSIZE;
7020 }
7021
7022 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7023                                u32 seq, int flags, struct wiphy *wiphy,
7024                                const struct ieee80211_regdomain *regdom)
7025 {
7026         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7027                                    NL80211_CMD_GET_REG);
7028
7029         if (!hdr)
7030                 return -1;
7031
7032         genl_dump_check_consistent(cb, hdr);
7033
7034         if (nl80211_put_regdom(regdom, msg))
7035                 goto nla_put_failure;
7036
7037         if (!wiphy && reg_last_request_cell_base() &&
7038             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7039                         NL80211_USER_REG_HINT_CELL_BASE))
7040                 goto nla_put_failure;
7041
7042         if (wiphy &&
7043             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7044                 goto nla_put_failure;
7045
7046         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7047             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7048                 goto nla_put_failure;
7049
7050         genlmsg_end(msg, hdr);
7051         return 0;
7052
7053 nla_put_failure:
7054         genlmsg_cancel(msg, hdr);
7055         return -EMSGSIZE;
7056 }
7057
7058 static int nl80211_get_reg_dump(struct sk_buff *skb,
7059                                 struct netlink_callback *cb)
7060 {
7061         const struct ieee80211_regdomain *regdom = NULL;
7062         struct cfg80211_registered_device *rdev;
7063         int err, reg_idx, start = cb->args[2];
7064
7065         rtnl_lock();
7066
7067         if (cfg80211_regdomain && start == 0) {
7068                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7069                                           NLM_F_MULTI, NULL,
7070                                           rtnl_dereference(cfg80211_regdomain));
7071                 if (err < 0)
7072                         goto out_err;
7073         }
7074
7075         /* the global regdom is idx 0 */
7076         reg_idx = 1;
7077         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7078                 regdom = get_wiphy_regdom(&rdev->wiphy);
7079                 if (!regdom)
7080                         continue;
7081
7082                 if (++reg_idx <= start)
7083                         continue;
7084
7085                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7086                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7087                 if (err < 0) {
7088                         reg_idx--;
7089                         break;
7090                 }
7091         }
7092
7093         cb->args[2] = reg_idx;
7094         err = skb->len;
7095 out_err:
7096         rtnl_unlock();
7097         return err;
7098 }
7099
7100 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7101 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7102         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7103         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7104         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7105         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7106         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7107         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7108         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7109 };
7110
7111 static int parse_reg_rule(struct nlattr *tb[],
7112         struct ieee80211_reg_rule *reg_rule)
7113 {
7114         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7115         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7116
7117         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7118                 return -EINVAL;
7119         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7120                 return -EINVAL;
7121         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7122                 return -EINVAL;
7123         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7124                 return -EINVAL;
7125         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7126                 return -EINVAL;
7127
7128         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7129
7130         freq_range->start_freq_khz =
7131                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7132         freq_range->end_freq_khz =
7133                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7134         freq_range->max_bandwidth_khz =
7135                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7136
7137         power_rule->max_eirp =
7138                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7139
7140         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7141                 power_rule->max_antenna_gain =
7142                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7143
7144         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7145                 reg_rule->dfs_cac_ms =
7146                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7147
7148         return 0;
7149 }
7150
7151 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7152 {
7153         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7154         struct nlattr *nl_reg_rule;
7155         char *alpha2;
7156         int rem_reg_rules, r;
7157         u32 num_rules = 0, rule_idx = 0;
7158         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7159         struct ieee80211_regdomain *rd;
7160
7161         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7162                 return -EINVAL;
7163
7164         if (!info->attrs[NL80211_ATTR_REG_RULES])
7165                 return -EINVAL;
7166
7167         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7168
7169         if (info->attrs[NL80211_ATTR_DFS_REGION])
7170                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7171
7172         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7173                             rem_reg_rules) {
7174                 num_rules++;
7175                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7176                         return -EINVAL;
7177         }
7178
7179         if (!reg_is_valid_request(alpha2))
7180                 return -EINVAL;
7181
7182         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7183         if (!rd)
7184                 return -ENOMEM;
7185
7186         rd->n_reg_rules = num_rules;
7187         rd->alpha2[0] = alpha2[0];
7188         rd->alpha2[1] = alpha2[1];
7189
7190         /*
7191          * Disable DFS master mode if the DFS region was
7192          * not supported or known on this kernel.
7193          */
7194         if (reg_supported_dfs_region(dfs_region))
7195                 rd->dfs_region = dfs_region;
7196
7197         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7198                             rem_reg_rules) {
7199                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7200                                                 nl_reg_rule, reg_rule_policy,
7201                                                 info->extack);
7202                 if (r)
7203                         goto bad_reg;
7204                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7205                 if (r)
7206                         goto bad_reg;
7207
7208                 rule_idx++;
7209
7210                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7211                         r = -EINVAL;
7212                         goto bad_reg;
7213                 }
7214         }
7215
7216         /* set_regdom takes ownership of rd */
7217         return set_regdom(rd, REGD_SOURCE_CRDA);
7218  bad_reg:
7219         kfree(rd);
7220         return r;
7221 }
7222 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7223
7224 static int validate_scan_freqs(struct nlattr *freqs)
7225 {
7226         struct nlattr *attr1, *attr2;
7227         int n_channels = 0, tmp1, tmp2;
7228
7229         nla_for_each_nested(attr1, freqs, tmp1)
7230                 if (nla_len(attr1) != sizeof(u32))
7231                         return 0;
7232
7233         nla_for_each_nested(attr1, freqs, tmp1) {
7234                 n_channels++;
7235                 /*
7236                  * Some hardware has a limited channel list for
7237                  * scanning, and it is pretty much nonsensical
7238                  * to scan for a channel twice, so disallow that
7239                  * and don't require drivers to check that the
7240                  * channel list they get isn't longer than what
7241                  * they can scan, as long as they can scan all
7242                  * the channels they registered at once.
7243                  */
7244                 nla_for_each_nested(attr2, freqs, tmp2)
7245                         if (attr1 != attr2 &&
7246                             nla_get_u32(attr1) == nla_get_u32(attr2))
7247                                 return 0;
7248         }
7249
7250         return n_channels;
7251 }
7252
7253 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7254 {
7255         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7256 }
7257
7258 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7259                             struct cfg80211_bss_selection *bss_select)
7260 {
7261         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7262         struct nlattr *nest;
7263         int err;
7264         bool found = false;
7265         int i;
7266
7267         /* only process one nested attribute */
7268         nest = nla_data(nla);
7269         if (!nla_ok(nest, nla_len(nest)))
7270                 return -EINVAL;
7271
7272         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7273                                           nest, nl80211_bss_select_policy,
7274                                           NULL);
7275         if (err)
7276                 return err;
7277
7278         /* only one attribute may be given */
7279         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7280                 if (attr[i]) {
7281                         if (found)
7282                                 return -EINVAL;
7283                         found = true;
7284                 }
7285         }
7286
7287         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7288
7289         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7290                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7291
7292         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7293                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7294                 bss_select->param.band_pref =
7295                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7296                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7297                         return -EINVAL;
7298         }
7299
7300         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7301                 struct nl80211_bss_select_rssi_adjust *adj_param;
7302
7303                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7304                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7305                 bss_select->param.adjust.band = adj_param->band;
7306                 bss_select->param.adjust.delta = adj_param->delta;
7307                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7308                         return -EINVAL;
7309         }
7310
7311         /* user-space did not provide behaviour attribute */
7312         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7313                 return -EINVAL;
7314
7315         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7316                 return -EINVAL;
7317
7318         return 0;
7319 }
7320
7321 int nl80211_parse_random_mac(struct nlattr **attrs,
7322                              u8 *mac_addr, u8 *mac_addr_mask)
7323 {
7324         int i;
7325
7326         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7327                 eth_zero_addr(mac_addr);
7328                 eth_zero_addr(mac_addr_mask);
7329                 mac_addr[0] = 0x2;
7330                 mac_addr_mask[0] = 0x3;
7331
7332                 return 0;
7333         }
7334
7335         /* need both or none */
7336         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7337                 return -EINVAL;
7338
7339         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7340         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7341
7342         /* don't allow or configure an mcast address */
7343         if (!is_multicast_ether_addr(mac_addr_mask) ||
7344             is_multicast_ether_addr(mac_addr))
7345                 return -EINVAL;
7346
7347         /*
7348          * allow users to pass a MAC address that has bits set outside
7349          * of the mask, but don't bother drivers with having to deal
7350          * with such bits
7351          */
7352         for (i = 0; i < ETH_ALEN; i++)
7353                 mac_addr[i] &= mac_addr_mask[i];
7354
7355         return 0;
7356 }
7357
7358 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7359 {
7360         ASSERT_WDEV_LOCK(wdev);
7361
7362         if (!cfg80211_beaconing_iface_active(wdev))
7363                 return true;
7364
7365         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7366                 return true;
7367
7368         return regulatory_pre_cac_allowed(wdev->wiphy);
7369 }
7370
7371 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7372                                     enum nl80211_ext_feature_index feat)
7373 {
7374         if (!(flags & flag))
7375                 return true;
7376         if (wiphy_ext_feature_isset(wiphy, feat))
7377                 return true;
7378         return false;
7379 }
7380
7381 static int
7382 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7383                          void *request, struct nlattr **attrs,
7384                          bool is_sched_scan)
7385 {
7386         u8 *mac_addr, *mac_addr_mask;
7387         u32 *flags;
7388         enum nl80211_feature_flags randomness_flag;
7389
7390         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7391                 return 0;
7392
7393         if (is_sched_scan) {
7394                 struct cfg80211_sched_scan_request *req = request;
7395
7396                 randomness_flag = wdev ?
7397                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7398                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7399                 flags = &req->flags;
7400                 mac_addr = req->mac_addr;
7401                 mac_addr_mask = req->mac_addr_mask;
7402         } else {
7403                 struct cfg80211_scan_request *req = request;
7404
7405                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7406                 flags = &req->flags;
7407                 mac_addr = req->mac_addr;
7408                 mac_addr_mask = req->mac_addr_mask;
7409         }
7410
7411         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7412
7413         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7414              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7415             !nl80211_check_scan_feat(wiphy, *flags,
7416                                      NL80211_SCAN_FLAG_LOW_SPAN,
7417                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7418             !nl80211_check_scan_feat(wiphy, *flags,
7419                                      NL80211_SCAN_FLAG_LOW_POWER,
7420                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7421             !nl80211_check_scan_feat(wiphy, *flags,
7422                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7423                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7424             !nl80211_check_scan_feat(wiphy, *flags,
7425                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7426                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7427             !nl80211_check_scan_feat(wiphy, *flags,
7428                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7429                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7430             !nl80211_check_scan_feat(wiphy, *flags,
7431                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7432                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7433             !nl80211_check_scan_feat(wiphy, *flags,
7434                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7435                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7436             !nl80211_check_scan_feat(wiphy, *flags,
7437                                      NL80211_SCAN_FLAG_RANDOM_SN,
7438                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7439             !nl80211_check_scan_feat(wiphy, *flags,
7440                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7441                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7442                 return -EOPNOTSUPP;
7443
7444         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7445                 int err;
7446
7447                 if (!(wiphy->features & randomness_flag) ||
7448                     (wdev && wdev->current_bss))
7449                         return -EOPNOTSUPP;
7450
7451                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7452                 if (err)
7453                         return err;
7454         }
7455
7456         return 0;
7457 }
7458
7459 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7460 {
7461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7462         struct wireless_dev *wdev = info->user_ptr[1];
7463         struct cfg80211_scan_request *request;
7464         struct nlattr *attr;
7465         struct wiphy *wiphy;
7466         int err, tmp, n_ssids = 0, n_channels, i;
7467         size_t ie_len;
7468
7469         wiphy = &rdev->wiphy;
7470
7471         if (wdev->iftype == NL80211_IFTYPE_NAN)
7472                 return -EOPNOTSUPP;
7473
7474         if (!rdev->ops->scan)
7475                 return -EOPNOTSUPP;
7476
7477         if (rdev->scan_req || rdev->scan_msg) {
7478                 err = -EBUSY;
7479                 goto unlock;
7480         }
7481
7482         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7483                 n_channels = validate_scan_freqs(
7484                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7485                 if (!n_channels) {
7486                         err = -EINVAL;
7487                         goto unlock;
7488                 }
7489         } else {
7490                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7491         }
7492
7493         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7494                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7495                         n_ssids++;
7496
7497         if (n_ssids > wiphy->max_scan_ssids) {
7498                 err = -EINVAL;
7499                 goto unlock;
7500         }
7501
7502         if (info->attrs[NL80211_ATTR_IE])
7503                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7504         else
7505                 ie_len = 0;
7506
7507         if (ie_len > wiphy->max_scan_ie_len) {
7508                 err = -EINVAL;
7509                 goto unlock;
7510         }
7511
7512         request = kzalloc(sizeof(*request)
7513                         + sizeof(*request->ssids) * n_ssids
7514                         + sizeof(*request->channels) * n_channels
7515                         + ie_len, GFP_KERNEL);
7516         if (!request) {
7517                 err = -ENOMEM;
7518                 goto unlock;
7519         }
7520
7521         if (n_ssids)
7522                 request->ssids = (void *)&request->channels[n_channels];
7523         request->n_ssids = n_ssids;
7524         if (ie_len) {
7525                 if (n_ssids)
7526                         request->ie = (void *)(request->ssids + n_ssids);
7527                 else
7528                         request->ie = (void *)(request->channels + n_channels);
7529         }
7530
7531         i = 0;
7532         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7533                 /* user specified, bail out if channel not found */
7534                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7535                         struct ieee80211_channel *chan;
7536
7537                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7538
7539                         if (!chan) {
7540                                 err = -EINVAL;
7541                                 goto out_free;
7542                         }
7543
7544                         /* ignore disabled channels */
7545                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7546                                 continue;
7547
7548                         request->channels[i] = chan;
7549                         i++;
7550                 }
7551         } else {
7552                 enum nl80211_band band;
7553
7554                 /* all channels */
7555                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7556                         int j;
7557
7558                         if (!wiphy->bands[band])
7559                                 continue;
7560                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7561                                 struct ieee80211_channel *chan;
7562
7563                                 chan = &wiphy->bands[band]->channels[j];
7564
7565                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7566                                         continue;
7567
7568                                 request->channels[i] = chan;
7569                                 i++;
7570                         }
7571                 }
7572         }
7573
7574         if (!i) {
7575                 err = -EINVAL;
7576                 goto out_free;
7577         }
7578
7579         request->n_channels = i;
7580
7581         wdev_lock(wdev);
7582         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7583                 struct ieee80211_channel *chan;
7584
7585                 if (request->n_channels != 1) {
7586                         wdev_unlock(wdev);
7587                         err = -EBUSY;
7588                         goto out_free;
7589                 }
7590
7591                 chan = request->channels[0];
7592                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7593                         wdev_unlock(wdev);
7594                         err = -EBUSY;
7595                         goto out_free;
7596                 }
7597         }
7598         wdev_unlock(wdev);
7599
7600         i = 0;
7601         if (n_ssids) {
7602                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7603                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7604                                 err = -EINVAL;
7605                                 goto out_free;
7606                         }
7607                         request->ssids[i].ssid_len = nla_len(attr);
7608                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7609                         i++;
7610                 }
7611         }
7612
7613         if (info->attrs[NL80211_ATTR_IE]) {
7614                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7615                 memcpy((void *)request->ie,
7616                        nla_data(info->attrs[NL80211_ATTR_IE]),
7617                        request->ie_len);
7618         }
7619
7620         for (i = 0; i < NUM_NL80211_BANDS; i++)
7621                 if (wiphy->bands[i])
7622                         request->rates[i] =
7623                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7624
7625         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7626                 nla_for_each_nested(attr,
7627                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7628                                     tmp) {
7629                         enum nl80211_band band = nla_type(attr);
7630
7631                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7632                                 err = -EINVAL;
7633                                 goto out_free;
7634                         }
7635
7636                         if (!wiphy->bands[band])
7637                                 continue;
7638
7639                         err = ieee80211_get_ratemask(wiphy->bands[band],
7640                                                      nla_data(attr),
7641                                                      nla_len(attr),
7642                                                      &request->rates[band]);
7643                         if (err)
7644                                 goto out_free;
7645                 }
7646         }
7647
7648         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7649                 if (!wiphy_ext_feature_isset(wiphy,
7650                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7651                         err = -EOPNOTSUPP;
7652                         goto out_free;
7653                 }
7654
7655                 request->duration =
7656                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7657                 request->duration_mandatory =
7658                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7659         }
7660
7661         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7662                                        false);
7663         if (err)
7664                 goto out_free;
7665
7666         request->no_cck =
7667                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7668
7669         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7670          * BSSID to scan for. This was problematic because that same attribute
7671          * was already used for another purpose (local random MAC address). The
7672          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7673          * compatibility with older userspace components, also use the
7674          * NL80211_ATTR_MAC value here if it can be determined to be used for
7675          * the specific BSSID use case instead of the random MAC address
7676          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7677          */
7678         if (info->attrs[NL80211_ATTR_BSSID])
7679                 memcpy(request->bssid,
7680                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7681         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7682                  info->attrs[NL80211_ATTR_MAC])
7683                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7684                        ETH_ALEN);
7685         else
7686                 eth_broadcast_addr(request->bssid);
7687
7688         request->wdev = wdev;
7689         request->wiphy = &rdev->wiphy;
7690         request->scan_start = jiffies;
7691
7692         rdev->scan_req = request;
7693         err = rdev_scan(rdev, request);
7694
7695         if (!err) {
7696                 nl80211_send_scan_start(rdev, wdev);
7697                 if (wdev->netdev)
7698                         dev_hold(wdev->netdev);
7699         } else {
7700  out_free:
7701                 rdev->scan_req = NULL;
7702                 kfree(request);
7703         }
7704
7705  unlock:
7706         return err;
7707 }
7708
7709 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7710 {
7711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7712         struct wireless_dev *wdev = info->user_ptr[1];
7713
7714         if (!rdev->ops->abort_scan)
7715                 return -EOPNOTSUPP;
7716
7717         if (rdev->scan_msg)
7718                 return 0;
7719
7720         if (!rdev->scan_req)
7721                 return -ENOENT;
7722
7723         rdev_abort_scan(rdev, wdev);
7724         return 0;
7725 }
7726
7727 static int
7728 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7729                                struct cfg80211_sched_scan_request *request,
7730                                struct nlattr **attrs)
7731 {
7732         int tmp, err, i = 0;
7733         struct nlattr *attr;
7734
7735         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7736                 u32 interval;
7737
7738                 /*
7739                  * If scan plans are not specified,
7740                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7741                  * case one scan plan will be set with the specified scan
7742                  * interval and infinite number of iterations.
7743                  */
7744                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7745                 if (!interval)
7746                         return -EINVAL;
7747
7748                 request->scan_plans[0].interval =
7749                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7750                 if (!request->scan_plans[0].interval)
7751                         return -EINVAL;
7752
7753                 if (request->scan_plans[0].interval >
7754                     wiphy->max_sched_scan_plan_interval)
7755                         request->scan_plans[0].interval =
7756                                 wiphy->max_sched_scan_plan_interval;
7757
7758                 return 0;
7759         }
7760
7761         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7762                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7763
7764                 if (WARN_ON(i >= n_plans))
7765                         return -EINVAL;
7766
7767                 err = nla_parse_nested_deprecated(plan,
7768                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7769                                                   attr, nl80211_plan_policy,
7770                                                   NULL);
7771                 if (err)
7772                         return err;
7773
7774                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7775                         return -EINVAL;
7776
7777                 request->scan_plans[i].interval =
7778                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7779                 if (!request->scan_plans[i].interval ||
7780                     request->scan_plans[i].interval >
7781                     wiphy->max_sched_scan_plan_interval)
7782                         return -EINVAL;
7783
7784                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7785                         request->scan_plans[i].iterations =
7786                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7787                         if (!request->scan_plans[i].iterations ||
7788                             (request->scan_plans[i].iterations >
7789                              wiphy->max_sched_scan_plan_iterations))
7790                                 return -EINVAL;
7791                 } else if (i < n_plans - 1) {
7792                         /*
7793                          * All scan plans but the last one must specify
7794                          * a finite number of iterations
7795                          */
7796                         return -EINVAL;
7797                 }
7798
7799                 i++;
7800         }
7801
7802         /*
7803          * The last scan plan must not specify the number of
7804          * iterations, it is supposed to run infinitely
7805          */
7806         if (request->scan_plans[n_plans - 1].iterations)
7807                 return  -EINVAL;
7808
7809         return 0;
7810 }
7811
7812 static int
7813 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7814                                        struct cfg80211_match_set *match_sets,
7815                                        struct nlattr *tb_band_rssi,
7816                                        s32 rssi_thold)
7817 {
7818         struct nlattr *attr;
7819         int i, tmp, ret = 0;
7820
7821         if (!wiphy_ext_feature_isset(wiphy,
7822                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7823                 if (tb_band_rssi)
7824                         ret = -EOPNOTSUPP;
7825                 else
7826                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7827                                 match_sets->per_band_rssi_thold[i] =
7828                                         NL80211_SCAN_RSSI_THOLD_OFF;
7829                 return ret;
7830         }
7831
7832         for (i = 0; i < NUM_NL80211_BANDS; i++)
7833                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7834
7835         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7836                 enum nl80211_band band = nla_type(attr);
7837
7838                 if (band < 0 || band >= NUM_NL80211_BANDS)
7839                         return -EINVAL;
7840
7841                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7842         }
7843
7844         return 0;
7845 }
7846
7847 static struct cfg80211_sched_scan_request *
7848 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7849                          struct nlattr **attrs, int max_match_sets)
7850 {
7851         struct cfg80211_sched_scan_request *request;
7852         struct nlattr *attr;
7853         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7854         enum nl80211_band band;
7855         size_t ie_len;
7856         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7857         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7858
7859         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7860                 n_channels = validate_scan_freqs(
7861                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7862                 if (!n_channels)
7863                         return ERR_PTR(-EINVAL);
7864         } else {
7865                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7866         }
7867
7868         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7869                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7870                                     tmp)
7871                         n_ssids++;
7872
7873         if (n_ssids > wiphy->max_sched_scan_ssids)
7874                 return ERR_PTR(-EINVAL);
7875
7876         /*
7877          * First, count the number of 'real' matchsets. Due to an issue with
7878          * the old implementation, matchsets containing only the RSSI attribute
7879          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7880          * RSSI for all matchsets, rather than their own matchset for reporting
7881          * all APs with a strong RSSI. This is needed to be compatible with
7882          * older userspace that treated a matchset with only the RSSI as the
7883          * global RSSI for all other matchsets - if there are other matchsets.
7884          */
7885         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7886                 nla_for_each_nested(attr,
7887                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7888                                     tmp) {
7889                         struct nlattr *rssi;
7890
7891                         err = nla_parse_nested_deprecated(tb,
7892                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7893                                                           attr,
7894                                                           nl80211_match_policy,
7895                                                           NULL);
7896                         if (err)
7897                                 return ERR_PTR(err);
7898
7899                         /* SSID and BSSID are mutually exclusive */
7900                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7901                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7902                                 return ERR_PTR(-EINVAL);
7903
7904                         /* add other standalone attributes here */
7905                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7906                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7907                                 n_match_sets++;
7908                                 continue;
7909                         }
7910                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7911                         if (rssi)
7912                                 default_match_rssi = nla_get_s32(rssi);
7913                 }
7914         }
7915
7916         /* However, if there's no other matchset, add the RSSI one */
7917         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7918                 n_match_sets = 1;
7919
7920         if (n_match_sets > max_match_sets)
7921                 return ERR_PTR(-EINVAL);
7922
7923         if (attrs[NL80211_ATTR_IE])
7924                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7925         else
7926                 ie_len = 0;
7927
7928         if (ie_len > wiphy->max_sched_scan_ie_len)
7929                 return ERR_PTR(-EINVAL);
7930
7931         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7932                 /*
7933                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7934                  * each scan plan already specifies its own interval
7935                  */
7936                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7937                         return ERR_PTR(-EINVAL);
7938
7939                 nla_for_each_nested(attr,
7940                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7941                         n_plans++;
7942         } else {
7943                 /*
7944                  * The scan interval attribute is kept for backward
7945                  * compatibility. If no scan plans are specified and sched scan
7946                  * interval is specified, one scan plan will be set with this
7947                  * scan interval and infinite number of iterations.
7948                  */
7949                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7950                         return ERR_PTR(-EINVAL);
7951
7952                 n_plans = 1;
7953         }
7954
7955         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7956                 return ERR_PTR(-EINVAL);
7957
7958         if (!wiphy_ext_feature_isset(
7959                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7960             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7961              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7962                 return ERR_PTR(-EINVAL);
7963
7964         request = kzalloc(sizeof(*request)
7965                         + sizeof(*request->ssids) * n_ssids
7966                         + sizeof(*request->match_sets) * n_match_sets
7967                         + sizeof(*request->scan_plans) * n_plans
7968                         + sizeof(*request->channels) * n_channels
7969                         + ie_len, GFP_KERNEL);
7970         if (!request)
7971                 return ERR_PTR(-ENOMEM);
7972
7973         if (n_ssids)
7974                 request->ssids = (void *)&request->channels[n_channels];
7975         request->n_ssids = n_ssids;
7976         if (ie_len) {
7977                 if (n_ssids)
7978                         request->ie = (void *)(request->ssids + n_ssids);
7979                 else
7980                         request->ie = (void *)(request->channels + n_channels);
7981         }
7982
7983         if (n_match_sets) {
7984                 if (request->ie)
7985                         request->match_sets = (void *)(request->ie + ie_len);
7986                 else if (n_ssids)
7987                         request->match_sets =
7988                                 (void *)(request->ssids + n_ssids);
7989                 else
7990                         request->match_sets =
7991                                 (void *)(request->channels + n_channels);
7992         }
7993         request->n_match_sets = n_match_sets;
7994
7995         if (n_match_sets)
7996                 request->scan_plans = (void *)(request->match_sets +
7997                                                n_match_sets);
7998         else if (request->ie)
7999                 request->scan_plans = (void *)(request->ie + ie_len);
8000         else if (n_ssids)
8001                 request->scan_plans = (void *)(request->ssids + n_ssids);
8002         else
8003                 request->scan_plans = (void *)(request->channels + n_channels);
8004
8005         request->n_scan_plans = n_plans;
8006
8007         i = 0;
8008         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8009                 /* user specified, bail out if channel not found */
8010                 nla_for_each_nested(attr,
8011                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8012                                     tmp) {
8013                         struct ieee80211_channel *chan;
8014
8015                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8016
8017                         if (!chan) {
8018                                 err = -EINVAL;
8019                                 goto out_free;
8020                         }
8021
8022                         /* ignore disabled channels */
8023                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8024                                 continue;
8025
8026                         request->channels[i] = chan;
8027                         i++;
8028                 }
8029         } else {
8030                 /* all channels */
8031                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8032                         int j;
8033
8034                         if (!wiphy->bands[band])
8035                                 continue;
8036                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8037                                 struct ieee80211_channel *chan;
8038
8039                                 chan = &wiphy->bands[band]->channels[j];
8040
8041                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8042                                         continue;
8043
8044                                 request->channels[i] = chan;
8045                                 i++;
8046                         }
8047                 }
8048         }
8049
8050         if (!i) {
8051                 err = -EINVAL;
8052                 goto out_free;
8053         }
8054
8055         request->n_channels = i;
8056
8057         i = 0;
8058         if (n_ssids) {
8059                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8060                                     tmp) {
8061                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8062                                 err = -EINVAL;
8063                                 goto out_free;
8064                         }
8065                         request->ssids[i].ssid_len = nla_len(attr);
8066                         memcpy(request->ssids[i].ssid, nla_data(attr),
8067                                nla_len(attr));
8068                         i++;
8069                 }
8070         }
8071
8072         i = 0;
8073         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8074                 nla_for_each_nested(attr,
8075                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8076                                     tmp) {
8077                         struct nlattr *ssid, *bssid, *rssi;
8078
8079                         err = nla_parse_nested_deprecated(tb,
8080                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8081                                                           attr,
8082                                                           nl80211_match_policy,
8083                                                           NULL);
8084                         if (err)
8085                                 goto out_free;
8086                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8087                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8088
8089                         if (!ssid && !bssid) {
8090                                 i++;
8091                                 continue;
8092                         }
8093
8094                         if (WARN_ON(i >= n_match_sets)) {
8095                                 /* this indicates a programming error,
8096                                  * the loop above should have verified
8097                                  * things properly
8098                                  */
8099                                 err = -EINVAL;
8100                                 goto out_free;
8101                         }
8102
8103                         if (ssid) {
8104                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8105                                         err = -EINVAL;
8106                                         goto out_free;
8107                                 }
8108                                 memcpy(request->match_sets[i].ssid.ssid,
8109                                        nla_data(ssid), nla_len(ssid));
8110                                 request->match_sets[i].ssid.ssid_len =
8111                                         nla_len(ssid);
8112                         }
8113                         if (bssid) {
8114                                 if (nla_len(bssid) != ETH_ALEN) {
8115                                         err = -EINVAL;
8116                                         goto out_free;
8117                                 }
8118                                 memcpy(request->match_sets[i].bssid,
8119                                        nla_data(bssid), ETH_ALEN);
8120                         }
8121
8122                         /* special attribute - old implementation w/a */
8123                         request->match_sets[i].rssi_thold = default_match_rssi;
8124                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8125                         if (rssi)
8126                                 request->match_sets[i].rssi_thold =
8127                                         nla_get_s32(rssi);
8128
8129                         /* Parse per band RSSI attribute */
8130                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8131                                 &request->match_sets[i],
8132                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8133                                 request->match_sets[i].rssi_thold);
8134                         if (err)
8135                                 goto out_free;
8136
8137                         i++;
8138                 }
8139
8140                 /* there was no other matchset, so the RSSI one is alone */
8141                 if (i == 0 && n_match_sets)
8142                         request->match_sets[0].rssi_thold = default_match_rssi;
8143
8144                 request->min_rssi_thold = INT_MAX;
8145                 for (i = 0; i < n_match_sets; i++)
8146                         request->min_rssi_thold =
8147                                 min(request->match_sets[i].rssi_thold,
8148                                     request->min_rssi_thold);
8149         } else {
8150                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8151         }
8152
8153         if (ie_len) {
8154                 request->ie_len = ie_len;
8155                 memcpy((void *)request->ie,
8156                        nla_data(attrs[NL80211_ATTR_IE]),
8157                        request->ie_len);
8158         }
8159
8160         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8161         if (err)
8162                 goto out_free;
8163
8164         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8165                 request->delay =
8166                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8167
8168         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8169                 request->relative_rssi = nla_get_s8(
8170                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8171                 request->relative_rssi_set = true;
8172         }
8173
8174         if (request->relative_rssi_set &&
8175             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8176                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8177
8178                 rssi_adjust = nla_data(
8179                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8180                 request->rssi_adjust.band = rssi_adjust->band;
8181                 request->rssi_adjust.delta = rssi_adjust->delta;
8182                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8183                         err = -EINVAL;
8184                         goto out_free;
8185                 }
8186         }
8187
8188         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8189         if (err)
8190                 goto out_free;
8191
8192         request->scan_start = jiffies;
8193
8194         return request;
8195
8196 out_free:
8197         kfree(request);
8198         return ERR_PTR(err);
8199 }
8200
8201 static int nl80211_start_sched_scan(struct sk_buff *skb,
8202                                     struct genl_info *info)
8203 {
8204         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8205         struct net_device *dev = info->user_ptr[1];
8206         struct wireless_dev *wdev = dev->ieee80211_ptr;
8207         struct cfg80211_sched_scan_request *sched_scan_req;
8208         bool want_multi;
8209         int err;
8210
8211         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8212                 return -EOPNOTSUPP;
8213
8214         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8215         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8216         if (err)
8217                 return err;
8218
8219         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8220                                                   info->attrs,
8221                                                   rdev->wiphy.max_match_sets);
8222
8223         err = PTR_ERR_OR_ZERO(sched_scan_req);
8224         if (err)
8225                 goto out_err;
8226
8227         /* leave request id zero for legacy request
8228          * or if driver does not support multi-scheduled scan
8229          */
8230         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8231                 while (!sched_scan_req->reqid)
8232                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8233         }
8234
8235         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8236         if (err)
8237                 goto out_free;
8238
8239         sched_scan_req->dev = dev;
8240         sched_scan_req->wiphy = &rdev->wiphy;
8241
8242         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8243                 sched_scan_req->owner_nlportid = info->snd_portid;
8244
8245         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8246
8247         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8248         return 0;
8249
8250 out_free:
8251         kfree(sched_scan_req);
8252 out_err:
8253         return err;
8254 }
8255
8256 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8257                                    struct genl_info *info)
8258 {
8259         struct cfg80211_sched_scan_request *req;
8260         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8261         u64 cookie;
8262
8263         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8264                 return -EOPNOTSUPP;
8265
8266         if (info->attrs[NL80211_ATTR_COOKIE]) {
8267                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8268                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8269         }
8270
8271         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8272                                      struct cfg80211_sched_scan_request,
8273                                      list);
8274         if (!req || req->reqid ||
8275             (req->owner_nlportid &&
8276              req->owner_nlportid != info->snd_portid))
8277                 return -ENOENT;
8278
8279         return cfg80211_stop_sched_scan_req(rdev, req, false);
8280 }
8281
8282 static int nl80211_start_radar_detection(struct sk_buff *skb,
8283                                          struct genl_info *info)
8284 {
8285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8286         struct net_device *dev = info->user_ptr[1];
8287         struct wireless_dev *wdev = dev->ieee80211_ptr;
8288         struct wiphy *wiphy = wdev->wiphy;
8289         struct cfg80211_chan_def chandef;
8290         enum nl80211_dfs_regions dfs_region;
8291         unsigned int cac_time_ms;
8292         int err;
8293
8294         dfs_region = reg_get_dfs_region(wiphy);
8295         if (dfs_region == NL80211_DFS_UNSET)
8296                 return -EINVAL;
8297
8298         err = nl80211_parse_chandef(rdev, info, &chandef);
8299         if (err)
8300                 return err;
8301
8302         if (netif_carrier_ok(dev))
8303                 return -EBUSY;
8304
8305         if (wdev->cac_started)
8306                 return -EBUSY;
8307
8308         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8309         if (err < 0)
8310                 return err;
8311
8312         if (err == 0)
8313                 return -EINVAL;
8314
8315         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8316                 return -EINVAL;
8317
8318         /* CAC start is offloaded to HW and can't be started manually */
8319         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8320                 return -EOPNOTSUPP;
8321
8322         if (!rdev->ops->start_radar_detection)
8323                 return -EOPNOTSUPP;
8324
8325         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8326         if (WARN_ON(!cac_time_ms))
8327                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8328
8329         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8330         if (!err) {
8331                 wdev->chandef = chandef;
8332                 wdev->cac_started = true;
8333                 wdev->cac_start_time = jiffies;
8334                 wdev->cac_time_ms = cac_time_ms;
8335         }
8336         return err;
8337 }
8338
8339 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8340                                           struct genl_info *info)
8341 {
8342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8343         struct net_device *dev = info->user_ptr[1];
8344         struct wireless_dev *wdev = dev->ieee80211_ptr;
8345         struct wiphy *wiphy = wdev->wiphy;
8346         struct cfg80211_chan_def chandef;
8347         enum nl80211_dfs_regions dfs_region;
8348         int err;
8349
8350         dfs_region = reg_get_dfs_region(wiphy);
8351         if (dfs_region == NL80211_DFS_UNSET) {
8352                 GENL_SET_ERR_MSG(info,
8353                                  "DFS Region is not set. Unexpected Radar indication");
8354                 return -EINVAL;
8355         }
8356
8357         err = nl80211_parse_chandef(rdev, info, &chandef);
8358         if (err) {
8359                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8360                 return err;
8361         }
8362
8363         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8364         if (err < 0) {
8365                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8366                 return err;
8367         }
8368
8369         if (err == 0) {
8370                 GENL_SET_ERR_MSG(info,
8371                                  "Unexpected Radar indication for chandef/iftype");
8372                 return -EINVAL;
8373         }
8374
8375         /* Do not process this notification if radar is already detected
8376          * by kernel on this channel, and return success.
8377          */
8378         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8379                 return 0;
8380
8381         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8382
8383         cfg80211_sched_dfs_chan_update(rdev);
8384
8385         rdev->radar_chandef = chandef;
8386
8387         /* Propagate this notification to other radios as well */
8388         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8389
8390         return 0;
8391 }
8392
8393 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8394 {
8395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8396         struct net_device *dev = info->user_ptr[1];
8397         struct wireless_dev *wdev = dev->ieee80211_ptr;
8398         struct cfg80211_csa_settings params;
8399         /* csa_attrs is defined static to avoid waste of stack size - this
8400          * function is called under RTNL lock, so this should not be a problem.
8401          */
8402         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8403         int err;
8404         bool need_new_beacon = false;
8405         bool need_handle_dfs_flag = true;
8406         int len, i;
8407         u32 cs_count;
8408
8409         if (!rdev->ops->channel_switch ||
8410             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8411                 return -EOPNOTSUPP;
8412
8413         switch (dev->ieee80211_ptr->iftype) {
8414         case NL80211_IFTYPE_AP:
8415         case NL80211_IFTYPE_P2P_GO:
8416                 need_new_beacon = true;
8417                 /* For all modes except AP the handle_dfs flag needs to be
8418                  * supplied to tell the kernel that userspace will handle radar
8419                  * events when they happen. Otherwise a switch to a channel
8420                  * requiring DFS will be rejected.
8421                  */
8422                 need_handle_dfs_flag = false;
8423
8424                 /* useless if AP is not running */
8425                 if (!wdev->beacon_interval)
8426                         return -ENOTCONN;
8427                 break;
8428         case NL80211_IFTYPE_ADHOC:
8429                 if (!wdev->ssid_len)
8430                         return -ENOTCONN;
8431                 break;
8432         case NL80211_IFTYPE_MESH_POINT:
8433                 if (!wdev->mesh_id_len)
8434                         return -ENOTCONN;
8435                 break;
8436         default:
8437                 return -EOPNOTSUPP;
8438         }
8439
8440         memset(&params, 0, sizeof(params));
8441         params.beacon_csa.ftm_responder = -1;
8442
8443         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8444             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8445                 return -EINVAL;
8446
8447         /* only important for AP, IBSS and mesh create IEs internally */
8448         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8449                 return -EINVAL;
8450
8451         /* Even though the attribute is u32, the specification says
8452          * u8, so let's make sure we don't overflow.
8453          */
8454         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8455         if (cs_count > 255)
8456                 return -EINVAL;
8457
8458         params.count = cs_count;
8459
8460         if (!need_new_beacon)
8461                 goto skip_beacons;
8462
8463         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8464         if (err)
8465                 return err;
8466
8467         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8468                                           info->attrs[NL80211_ATTR_CSA_IES],
8469                                           nl80211_policy, info->extack);
8470         if (err)
8471                 return err;
8472
8473         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8474         if (err)
8475                 return err;
8476
8477         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8478                 return -EINVAL;
8479
8480         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8481         if (!len || (len % sizeof(u16)))
8482                 return -EINVAL;
8483
8484         params.n_counter_offsets_beacon = len / sizeof(u16);
8485         if (rdev->wiphy.max_num_csa_counters &&
8486             (params.n_counter_offsets_beacon >
8487              rdev->wiphy.max_num_csa_counters))
8488                 return -EINVAL;
8489
8490         params.counter_offsets_beacon =
8491                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8492
8493         /* sanity checks - counters should fit and be the same */
8494         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8495                 u16 offset = params.counter_offsets_beacon[i];
8496
8497                 if (offset >= params.beacon_csa.tail_len)
8498                         return -EINVAL;
8499
8500                 if (params.beacon_csa.tail[offset] != params.count)
8501                         return -EINVAL;
8502         }
8503
8504         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8505                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8506                 if (!len || (len % sizeof(u16)))
8507                         return -EINVAL;
8508
8509                 params.n_counter_offsets_presp = len / sizeof(u16);
8510                 if (rdev->wiphy.max_num_csa_counters &&
8511                     (params.n_counter_offsets_presp >
8512                      rdev->wiphy.max_num_csa_counters))
8513                         return -EINVAL;
8514
8515                 params.counter_offsets_presp =
8516                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8517
8518                 /* sanity checks - counters should fit and be the same */
8519                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8520                         u16 offset = params.counter_offsets_presp[i];
8521
8522                         if (offset >= params.beacon_csa.probe_resp_len)
8523                                 return -EINVAL;
8524
8525                         if (params.beacon_csa.probe_resp[offset] !=
8526                             params.count)
8527                                 return -EINVAL;
8528                 }
8529         }
8530
8531 skip_beacons:
8532         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8533         if (err)
8534                 return err;
8535
8536         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8537                                            wdev->iftype))
8538                 return -EINVAL;
8539
8540         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8541                                             &params.chandef,
8542                                             wdev->iftype);
8543         if (err < 0)
8544                 return err;
8545
8546         if (err > 0) {
8547                 params.radar_required = true;
8548                 if (need_handle_dfs_flag &&
8549                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8550                         return -EINVAL;
8551                 }
8552         }
8553
8554         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8555                 params.block_tx = true;
8556
8557         wdev_lock(wdev);
8558         err = rdev_channel_switch(rdev, dev, &params);
8559         wdev_unlock(wdev);
8560
8561         return err;
8562 }
8563
8564 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8565                             u32 seq, int flags,
8566                             struct cfg80211_registered_device *rdev,
8567                             struct wireless_dev *wdev,
8568                             struct cfg80211_internal_bss *intbss)
8569 {
8570         struct cfg80211_bss *res = &intbss->pub;
8571         const struct cfg80211_bss_ies *ies;
8572         void *hdr;
8573         struct nlattr *bss;
8574
8575         ASSERT_WDEV_LOCK(wdev);
8576
8577         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8578                              NL80211_CMD_NEW_SCAN_RESULTS);
8579         if (!hdr)
8580                 return -1;
8581
8582         genl_dump_check_consistent(cb, hdr);
8583
8584         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8585                 goto nla_put_failure;
8586         if (wdev->netdev &&
8587             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8588                 goto nla_put_failure;
8589         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8590                               NL80211_ATTR_PAD))
8591                 goto nla_put_failure;
8592
8593         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8594         if (!bss)
8595                 goto nla_put_failure;
8596         if ((!is_zero_ether_addr(res->bssid) &&
8597              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8598                 goto nla_put_failure;
8599
8600         rcu_read_lock();
8601         /* indicate whether we have probe response data or not */
8602         if (rcu_access_pointer(res->proberesp_ies) &&
8603             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8604                 goto fail_unlock_rcu;
8605
8606         /* this pointer prefers to be pointed to probe response data
8607          * but is always valid
8608          */
8609         ies = rcu_dereference(res->ies);
8610         if (ies) {
8611                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8612                                       NL80211_BSS_PAD))
8613                         goto fail_unlock_rcu;
8614                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8615                                         ies->len, ies->data))
8616                         goto fail_unlock_rcu;
8617         }
8618
8619         /* and this pointer is always (unless driver didn't know) beacon data */
8620         ies = rcu_dereference(res->beacon_ies);
8621         if (ies && ies->from_beacon) {
8622                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8623                                       NL80211_BSS_PAD))
8624                         goto fail_unlock_rcu;
8625                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8626                                         ies->len, ies->data))
8627                         goto fail_unlock_rcu;
8628         }
8629         rcu_read_unlock();
8630
8631         if (res->beacon_interval &&
8632             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8633                 goto nla_put_failure;
8634         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8635             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8636             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8637             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8638                         jiffies_to_msecs(jiffies - intbss->ts)))
8639                 goto nla_put_failure;
8640
8641         if (intbss->parent_tsf &&
8642             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8643                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8644              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8645                      intbss->parent_bssid)))
8646                 goto nla_put_failure;
8647
8648         if (intbss->ts_boottime &&
8649             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8650                               intbss->ts_boottime, NL80211_BSS_PAD))
8651                 goto nla_put_failure;
8652
8653         if (!nl80211_put_signal(msg, intbss->pub.chains,
8654                                 intbss->pub.chain_signal,
8655                                 NL80211_BSS_CHAIN_SIGNAL))
8656                 goto nla_put_failure;
8657
8658         switch (rdev->wiphy.signal_type) {
8659         case CFG80211_SIGNAL_TYPE_MBM:
8660                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8661                         goto nla_put_failure;
8662                 break;
8663         case CFG80211_SIGNAL_TYPE_UNSPEC:
8664                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8665                         goto nla_put_failure;
8666                 break;
8667         default:
8668                 break;
8669         }
8670
8671         switch (wdev->iftype) {
8672         case NL80211_IFTYPE_P2P_CLIENT:
8673         case NL80211_IFTYPE_STATION:
8674                 if (intbss == wdev->current_bss &&
8675                     nla_put_u32(msg, NL80211_BSS_STATUS,
8676                                 NL80211_BSS_STATUS_ASSOCIATED))
8677                         goto nla_put_failure;
8678                 break;
8679         case NL80211_IFTYPE_ADHOC:
8680                 if (intbss == wdev->current_bss &&
8681                     nla_put_u32(msg, NL80211_BSS_STATUS,
8682                                 NL80211_BSS_STATUS_IBSS_JOINED))
8683                         goto nla_put_failure;
8684                 break;
8685         default:
8686                 break;
8687         }
8688
8689         nla_nest_end(msg, bss);
8690
8691         genlmsg_end(msg, hdr);
8692         return 0;
8693
8694  fail_unlock_rcu:
8695         rcu_read_unlock();
8696  nla_put_failure:
8697         genlmsg_cancel(msg, hdr);
8698         return -EMSGSIZE;
8699 }
8700
8701 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8702 {
8703         struct cfg80211_registered_device *rdev;
8704         struct cfg80211_internal_bss *scan;
8705         struct wireless_dev *wdev;
8706         int start = cb->args[2], idx = 0;
8707         int err;
8708
8709         rtnl_lock();
8710         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8711         if (err) {
8712                 rtnl_unlock();
8713                 return err;
8714         }
8715
8716         wdev_lock(wdev);
8717         spin_lock_bh(&rdev->bss_lock);
8718
8719         /*
8720          * dump_scan will be called multiple times to break up the scan results
8721          * into multiple messages.  It is unlikely that any more bss-es will be
8722          * expired after the first call, so only call only call this on the
8723          * first dump_scan invocation.
8724          */
8725         if (start == 0)
8726                 cfg80211_bss_expire(rdev);
8727
8728         cb->seq = rdev->bss_generation;
8729
8730         list_for_each_entry(scan, &rdev->bss_list, list) {
8731                 if (++idx <= start)
8732                         continue;
8733                 if (nl80211_send_bss(skb, cb,
8734                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8735                                 rdev, wdev, scan) < 0) {
8736                         idx--;
8737                         break;
8738                 }
8739         }
8740
8741         spin_unlock_bh(&rdev->bss_lock);
8742         wdev_unlock(wdev);
8743
8744         cb->args[2] = idx;
8745         rtnl_unlock();
8746
8747         return skb->len;
8748 }
8749
8750 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8751                                int flags, struct net_device *dev,
8752                                bool allow_radio_stats,
8753                                struct survey_info *survey)
8754 {
8755         void *hdr;
8756         struct nlattr *infoattr;
8757
8758         /* skip radio stats if userspace didn't request them */
8759         if (!survey->channel && !allow_radio_stats)
8760                 return 0;
8761
8762         hdr = nl80211hdr_put(msg, portid, seq, flags,
8763                              NL80211_CMD_NEW_SURVEY_RESULTS);
8764         if (!hdr)
8765                 return -ENOMEM;
8766
8767         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8768                 goto nla_put_failure;
8769
8770         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8771         if (!infoattr)
8772                 goto nla_put_failure;
8773
8774         if (survey->channel &&
8775             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8776                         survey->channel->center_freq))
8777                 goto nla_put_failure;
8778
8779         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8780             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8781                 goto nla_put_failure;
8782         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8783             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8784                 goto nla_put_failure;
8785         if ((survey->filled & SURVEY_INFO_TIME) &&
8786             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8787                         survey->time, NL80211_SURVEY_INFO_PAD))
8788                 goto nla_put_failure;
8789         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8790             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8791                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8792                 goto nla_put_failure;
8793         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8794             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8795                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8796                 goto nla_put_failure;
8797         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8798             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8799                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8800                 goto nla_put_failure;
8801         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8802             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8803                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8804                 goto nla_put_failure;
8805         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8806             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8807                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8808                 goto nla_put_failure;
8809         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
8810             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
8811                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
8812                 goto nla_put_failure;
8813
8814         nla_nest_end(msg, infoattr);
8815
8816         genlmsg_end(msg, hdr);
8817         return 0;
8818
8819  nla_put_failure:
8820         genlmsg_cancel(msg, hdr);
8821         return -EMSGSIZE;
8822 }
8823
8824 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8825 {
8826         struct nlattr **attrbuf;
8827         struct survey_info survey;
8828         struct cfg80211_registered_device *rdev;
8829         struct wireless_dev *wdev;
8830         int survey_idx = cb->args[2];
8831         int res;
8832         bool radio_stats;
8833
8834         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8835         if (!attrbuf)
8836                 return -ENOMEM;
8837
8838         rtnl_lock();
8839         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8840         if (res)
8841                 goto out_err;
8842
8843         /* prepare_wdev_dump parsed the attributes */
8844         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8845
8846         if (!wdev->netdev) {
8847                 res = -EINVAL;
8848                 goto out_err;
8849         }
8850
8851         if (!rdev->ops->dump_survey) {
8852                 res = -EOPNOTSUPP;
8853                 goto out_err;
8854         }
8855
8856         while (1) {
8857                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8858                 if (res == -ENOENT)
8859                         break;
8860                 if (res)
8861                         goto out_err;
8862
8863                 /* don't send disabled channels, but do send non-channel data */
8864                 if (survey.channel &&
8865                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8866                         survey_idx++;
8867                         continue;
8868                 }
8869
8870                 if (nl80211_send_survey(skb,
8871                                 NETLINK_CB(cb->skb).portid,
8872                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8873                                 wdev->netdev, radio_stats, &survey) < 0)
8874                         goto out;
8875                 survey_idx++;
8876         }
8877
8878  out:
8879         cb->args[2] = survey_idx;
8880         res = skb->len;
8881  out_err:
8882         kfree(attrbuf);
8883         rtnl_unlock();
8884         return res;
8885 }
8886
8887 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8888 {
8889         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8890                                   NL80211_WPA_VERSION_2 |
8891                                   NL80211_WPA_VERSION_3));
8892 }
8893
8894 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8895 {
8896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8897         struct net_device *dev = info->user_ptr[1];
8898         struct ieee80211_channel *chan;
8899         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8900         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8901         enum nl80211_auth_type auth_type;
8902         struct key_parse key;
8903         bool local_state_change;
8904
8905         if (!info->attrs[NL80211_ATTR_MAC])
8906                 return -EINVAL;
8907
8908         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8909                 return -EINVAL;
8910
8911         if (!info->attrs[NL80211_ATTR_SSID])
8912                 return -EINVAL;
8913
8914         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8915                 return -EINVAL;
8916
8917         err = nl80211_parse_key(info, &key);
8918         if (err)
8919                 return err;
8920
8921         if (key.idx >= 0) {
8922                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8923                         return -EINVAL;
8924                 if (!key.p.key || !key.p.key_len)
8925                         return -EINVAL;
8926                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8927                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8928                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8929                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8930                         return -EINVAL;
8931                 if (key.idx > 3)
8932                         return -EINVAL;
8933         } else {
8934                 key.p.key_len = 0;
8935                 key.p.key = NULL;
8936         }
8937
8938         if (key.idx >= 0) {
8939                 int i;
8940                 bool ok = false;
8941
8942                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8943                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8944                                 ok = true;
8945                                 break;
8946                         }
8947                 }
8948                 if (!ok)
8949                         return -EINVAL;
8950         }
8951
8952         if (!rdev->ops->auth)
8953                 return -EOPNOTSUPP;
8954
8955         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8956             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8957                 return -EOPNOTSUPP;
8958
8959         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8960         chan = nl80211_get_valid_chan(&rdev->wiphy,
8961                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8962         if (!chan)
8963                 return -EINVAL;
8964
8965         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8966         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8967
8968         if (info->attrs[NL80211_ATTR_IE]) {
8969                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8970                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8971         }
8972
8973         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8974         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8975                 return -EINVAL;
8976
8977         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8978              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8979              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8980              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8981             !info->attrs[NL80211_ATTR_AUTH_DATA])
8982                 return -EINVAL;
8983
8984         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8985                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8986                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8987                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8988                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8989                         return -EINVAL;
8990                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8991                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8992                 /* need to include at least Auth Transaction and Status Code */
8993                 if (auth_data_len < 4)
8994                         return -EINVAL;
8995         }
8996
8997         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8998
8999         /*
9000          * Since we no longer track auth state, ignore
9001          * requests to only change local state.
9002          */
9003         if (local_state_change)
9004                 return 0;
9005
9006         wdev_lock(dev->ieee80211_ptr);
9007         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9008                                  ssid, ssid_len, ie, ie_len,
9009                                  key.p.key, key.p.key_len, key.idx,
9010                                  auth_data, auth_data_len);
9011         wdev_unlock(dev->ieee80211_ptr);
9012         return err;
9013 }
9014
9015 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9016                                      struct genl_info *info)
9017 {
9018         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9019                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9020                 return -EINVAL;
9021         }
9022
9023         if (!rdev->ops->tx_control_port ||
9024             !wiphy_ext_feature_isset(&rdev->wiphy,
9025                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9026                 return -EOPNOTSUPP;
9027
9028         return 0;
9029 }
9030
9031 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9032                                    struct genl_info *info,
9033                                    struct cfg80211_crypto_settings *settings,
9034                                    int cipher_limit)
9035 {
9036         memset(settings, 0, sizeof(*settings));
9037
9038         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9039
9040         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9041                 u16 proto;
9042
9043                 proto = nla_get_u16(
9044                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9045                 settings->control_port_ethertype = cpu_to_be16(proto);
9046                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9047                     proto != ETH_P_PAE)
9048                         return -EINVAL;
9049                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9050                         settings->control_port_no_encrypt = true;
9051         } else
9052                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9053
9054         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9055                 int r = validate_pae_over_nl80211(rdev, info);
9056
9057                 if (r < 0)
9058                         return r;
9059
9060                 settings->control_port_over_nl80211 = true;
9061         }
9062
9063         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9064                 void *data;
9065                 int len, i;
9066
9067                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9068                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9069                 settings->n_ciphers_pairwise = len / sizeof(u32);
9070
9071                 if (len % sizeof(u32))
9072                         return -EINVAL;
9073
9074                 if (settings->n_ciphers_pairwise > cipher_limit)
9075                         return -EINVAL;
9076
9077                 memcpy(settings->ciphers_pairwise, data, len);
9078
9079                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9080                         if (!cfg80211_supported_cipher_suite(
9081                                         &rdev->wiphy,
9082                                         settings->ciphers_pairwise[i]))
9083                                 return -EINVAL;
9084         }
9085
9086         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9087                 settings->cipher_group =
9088                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9089                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9090                                                      settings->cipher_group))
9091                         return -EINVAL;
9092         }
9093
9094         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9095                 settings->wpa_versions =
9096                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9097                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9098                         return -EINVAL;
9099         }
9100
9101         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9102                 void *data;
9103                 int len;
9104
9105                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9106                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9107                 settings->n_akm_suites = len / sizeof(u32);
9108
9109                 if (len % sizeof(u32))
9110                         return -EINVAL;
9111
9112                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9113                         return -EINVAL;
9114
9115                 memcpy(settings->akm_suites, data, len);
9116         }
9117
9118         if (info->attrs[NL80211_ATTR_PMK]) {
9119                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9120                         return -EINVAL;
9121                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9122                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9123                         return -EINVAL;
9124                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9125         }
9126
9127         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9128                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9129                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9130                         return -EINVAL;
9131                 settings->sae_pwd =
9132                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9133                 settings->sae_pwd_len =
9134                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9135         }
9136
9137         return 0;
9138 }
9139
9140 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9141 {
9142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9143         struct net_device *dev = info->user_ptr[1];
9144         struct ieee80211_channel *chan;
9145         struct cfg80211_assoc_request req = {};
9146         const u8 *bssid, *ssid;
9147         int err, ssid_len = 0;
9148
9149         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9150             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9151                 return -EPERM;
9152
9153         if (!info->attrs[NL80211_ATTR_MAC] ||
9154             !info->attrs[NL80211_ATTR_SSID] ||
9155             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9156                 return -EINVAL;
9157
9158         if (!rdev->ops->assoc)
9159                 return -EOPNOTSUPP;
9160
9161         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9162             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9163                 return -EOPNOTSUPP;
9164
9165         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9166
9167         chan = nl80211_get_valid_chan(&rdev->wiphy,
9168                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9169         if (!chan)
9170                 return -EINVAL;
9171
9172         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9173         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9174
9175         if (info->attrs[NL80211_ATTR_IE]) {
9176                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9177                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9178         }
9179
9180         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9181                 enum nl80211_mfp mfp =
9182                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9183                 if (mfp == NL80211_MFP_REQUIRED)
9184                         req.use_mfp = true;
9185                 else if (mfp != NL80211_MFP_NO)
9186                         return -EINVAL;
9187         }
9188
9189         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9190                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9191
9192         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9193                 req.flags |= ASSOC_REQ_DISABLE_HT;
9194
9195         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9196                 memcpy(&req.ht_capa_mask,
9197                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9198                        sizeof(req.ht_capa_mask));
9199
9200         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9201                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9202                         return -EINVAL;
9203                 memcpy(&req.ht_capa,
9204                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9205                        sizeof(req.ht_capa));
9206         }
9207
9208         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9209                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9210
9211         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9212                 memcpy(&req.vht_capa_mask,
9213                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9214                        sizeof(req.vht_capa_mask));
9215
9216         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9217                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9218                         return -EINVAL;
9219                 memcpy(&req.vht_capa,
9220                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9221                        sizeof(req.vht_capa));
9222         }
9223
9224         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9225                 if (!((rdev->wiphy.features &
9226                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9227                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9228                     !wiphy_ext_feature_isset(&rdev->wiphy,
9229                                              NL80211_EXT_FEATURE_RRM))
9230                         return -EINVAL;
9231                 req.flags |= ASSOC_REQ_USE_RRM;
9232         }
9233
9234         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9235                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9236                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9237                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9238                         return -EINVAL;
9239                 req.fils_nonces =
9240                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9241         }
9242
9243         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9244         if (!err) {
9245                 wdev_lock(dev->ieee80211_ptr);
9246
9247                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9248                                           ssid, ssid_len, &req);
9249
9250                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9251                         dev->ieee80211_ptr->conn_owner_nlportid =
9252                                 info->snd_portid;
9253                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9254                                bssid, ETH_ALEN);
9255                 }
9256
9257                 wdev_unlock(dev->ieee80211_ptr);
9258         }
9259
9260         return err;
9261 }
9262
9263 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9264 {
9265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9266         struct net_device *dev = info->user_ptr[1];
9267         const u8 *ie = NULL, *bssid;
9268         int ie_len = 0, err;
9269         u16 reason_code;
9270         bool local_state_change;
9271
9272         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9273             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9274                 return -EPERM;
9275
9276         if (!info->attrs[NL80211_ATTR_MAC])
9277                 return -EINVAL;
9278
9279         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9280                 return -EINVAL;
9281
9282         if (!rdev->ops->deauth)
9283                 return -EOPNOTSUPP;
9284
9285         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9286             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9287                 return -EOPNOTSUPP;
9288
9289         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9290
9291         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9292         if (reason_code == 0) {
9293                 /* Reason Code 0 is reserved */
9294                 return -EINVAL;
9295         }
9296
9297         if (info->attrs[NL80211_ATTR_IE]) {
9298                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9299                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9300         }
9301
9302         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9303
9304         wdev_lock(dev->ieee80211_ptr);
9305         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9306                                    local_state_change);
9307         wdev_unlock(dev->ieee80211_ptr);
9308         return err;
9309 }
9310
9311 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9312 {
9313         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9314         struct net_device *dev = info->user_ptr[1];
9315         const u8 *ie = NULL, *bssid;
9316         int ie_len = 0, err;
9317         u16 reason_code;
9318         bool local_state_change;
9319
9320         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9321             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9322                 return -EPERM;
9323
9324         if (!info->attrs[NL80211_ATTR_MAC])
9325                 return -EINVAL;
9326
9327         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9328                 return -EINVAL;
9329
9330         if (!rdev->ops->disassoc)
9331                 return -EOPNOTSUPP;
9332
9333         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9334             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9335                 return -EOPNOTSUPP;
9336
9337         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9338
9339         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9340         if (reason_code == 0) {
9341                 /* Reason Code 0 is reserved */
9342                 return -EINVAL;
9343         }
9344
9345         if (info->attrs[NL80211_ATTR_IE]) {
9346                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9347                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9348         }
9349
9350         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9351
9352         wdev_lock(dev->ieee80211_ptr);
9353         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9354                                      local_state_change);
9355         wdev_unlock(dev->ieee80211_ptr);
9356         return err;
9357 }
9358
9359 static bool
9360 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9361                          int mcast_rate[NUM_NL80211_BANDS],
9362                          int rateval)
9363 {
9364         struct wiphy *wiphy = &rdev->wiphy;
9365         bool found = false;
9366         int band, i;
9367
9368         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9369                 struct ieee80211_supported_band *sband;
9370
9371                 sband = wiphy->bands[band];
9372                 if (!sband)
9373                         continue;
9374
9375                 for (i = 0; i < sband->n_bitrates; i++) {
9376                         if (sband->bitrates[i].bitrate == rateval) {
9377                                 mcast_rate[band] = i + 1;
9378                                 found = true;
9379                                 break;
9380                         }
9381                 }
9382         }
9383
9384         return found;
9385 }
9386
9387 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9388 {
9389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9390         struct net_device *dev = info->user_ptr[1];
9391         struct cfg80211_ibss_params ibss;
9392         struct wiphy *wiphy;
9393         struct cfg80211_cached_keys *connkeys = NULL;
9394         int err;
9395
9396         memset(&ibss, 0, sizeof(ibss));
9397
9398         if (!info->attrs[NL80211_ATTR_SSID] ||
9399             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9400                 return -EINVAL;
9401
9402         ibss.beacon_interval = 100;
9403
9404         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9405                 ibss.beacon_interval =
9406                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9407
9408         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9409                                            ibss.beacon_interval);
9410         if (err)
9411                 return err;
9412
9413         if (!rdev->ops->join_ibss)
9414                 return -EOPNOTSUPP;
9415
9416         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9417                 return -EOPNOTSUPP;
9418
9419         wiphy = &rdev->wiphy;
9420
9421         if (info->attrs[NL80211_ATTR_MAC]) {
9422                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9423
9424                 if (!is_valid_ether_addr(ibss.bssid))
9425                         return -EINVAL;
9426         }
9427         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9428         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9429
9430         if (info->attrs[NL80211_ATTR_IE]) {
9431                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9432                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9433         }
9434
9435         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9436         if (err)
9437                 return err;
9438
9439         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9440                                      NL80211_IFTYPE_ADHOC))
9441                 return -EINVAL;
9442
9443         switch (ibss.chandef.width) {
9444         case NL80211_CHAN_WIDTH_5:
9445         case NL80211_CHAN_WIDTH_10:
9446         case NL80211_CHAN_WIDTH_20_NOHT:
9447                 break;
9448         case NL80211_CHAN_WIDTH_20:
9449         case NL80211_CHAN_WIDTH_40:
9450                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9451                         return -EINVAL;
9452                 break;
9453         case NL80211_CHAN_WIDTH_80:
9454         case NL80211_CHAN_WIDTH_80P80:
9455         case NL80211_CHAN_WIDTH_160:
9456                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9457                         return -EINVAL;
9458                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9459                                              NL80211_EXT_FEATURE_VHT_IBSS))
9460                         return -EINVAL;
9461                 break;
9462         default:
9463                 return -EINVAL;
9464         }
9465
9466         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9467         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9468
9469         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9470                 u8 *rates =
9471                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9472                 int n_rates =
9473                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9474                 struct ieee80211_supported_band *sband =
9475                         wiphy->bands[ibss.chandef.chan->band];
9476
9477                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9478                                              &ibss.basic_rates);
9479                 if (err)
9480                         return err;
9481         }
9482
9483         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9484                 memcpy(&ibss.ht_capa_mask,
9485                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9486                        sizeof(ibss.ht_capa_mask));
9487
9488         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9489                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9490                         return -EINVAL;
9491                 memcpy(&ibss.ht_capa,
9492                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9493                        sizeof(ibss.ht_capa));
9494         }
9495
9496         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9497             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9498                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9499                 return -EINVAL;
9500
9501         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9502                 bool no_ht = false;
9503
9504                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9505                 if (IS_ERR(connkeys))
9506                         return PTR_ERR(connkeys);
9507
9508                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9509                     no_ht) {
9510                         kzfree(connkeys);
9511                         return -EINVAL;
9512                 }
9513         }
9514
9515         ibss.control_port =
9516                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9517
9518         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9519                 int r = validate_pae_over_nl80211(rdev, info);
9520
9521                 if (r < 0) {
9522                         kzfree(connkeys);
9523                         return r;
9524                 }
9525
9526                 ibss.control_port_over_nl80211 = true;
9527         }
9528
9529         ibss.userspace_handles_dfs =
9530                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9531
9532         wdev_lock(dev->ieee80211_ptr);
9533         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9534         if (err)
9535                 kzfree(connkeys);
9536         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9537                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9538         wdev_unlock(dev->ieee80211_ptr);
9539
9540         return err;
9541 }
9542
9543 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9544 {
9545         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9546         struct net_device *dev = info->user_ptr[1];
9547
9548         if (!rdev->ops->leave_ibss)
9549                 return -EOPNOTSUPP;
9550
9551         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9552                 return -EOPNOTSUPP;
9553
9554         return cfg80211_leave_ibss(rdev, dev, false);
9555 }
9556
9557 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9558 {
9559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9560         struct net_device *dev = info->user_ptr[1];
9561         int mcast_rate[NUM_NL80211_BANDS];
9562         u32 nla_rate;
9563         int err;
9564
9565         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9566             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9567             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9568                 return -EOPNOTSUPP;
9569
9570         if (!rdev->ops->set_mcast_rate)
9571                 return -EOPNOTSUPP;
9572
9573         memset(mcast_rate, 0, sizeof(mcast_rate));
9574
9575         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9576                 return -EINVAL;
9577
9578         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9579         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9580                 return -EINVAL;
9581
9582         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9583
9584         return err;
9585 }
9586
9587 static struct sk_buff *
9588 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9589                             struct wireless_dev *wdev, int approxlen,
9590                             u32 portid, u32 seq, enum nl80211_commands cmd,
9591                             enum nl80211_attrs attr,
9592                             const struct nl80211_vendor_cmd_info *info,
9593                             gfp_t gfp)
9594 {
9595         struct sk_buff *skb;
9596         void *hdr;
9597         struct nlattr *data;
9598
9599         skb = nlmsg_new(approxlen + 100, gfp);
9600         if (!skb)
9601                 return NULL;
9602
9603         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9604         if (!hdr) {
9605                 kfree_skb(skb);
9606                 return NULL;
9607         }
9608
9609         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9610                 goto nla_put_failure;
9611
9612         if (info) {
9613                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9614                                 info->vendor_id))
9615                         goto nla_put_failure;
9616                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9617                                 info->subcmd))
9618                         goto nla_put_failure;
9619         }
9620
9621         if (wdev) {
9622                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9623                                       wdev_id(wdev), NL80211_ATTR_PAD))
9624                         goto nla_put_failure;
9625                 if (wdev->netdev &&
9626                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9627                                 wdev->netdev->ifindex))
9628                         goto nla_put_failure;
9629         }
9630
9631         data = nla_nest_start_noflag(skb, attr);
9632         if (!data)
9633                 goto nla_put_failure;
9634
9635         ((void **)skb->cb)[0] = rdev;
9636         ((void **)skb->cb)[1] = hdr;
9637         ((void **)skb->cb)[2] = data;
9638
9639         return skb;
9640
9641  nla_put_failure:
9642         kfree_skb(skb);
9643         return NULL;
9644 }
9645
9646 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9647                                            struct wireless_dev *wdev,
9648                                            enum nl80211_commands cmd,
9649                                            enum nl80211_attrs attr,
9650                                            unsigned int portid,
9651                                            int vendor_event_idx,
9652                                            int approxlen, gfp_t gfp)
9653 {
9654         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9655         const struct nl80211_vendor_cmd_info *info;
9656
9657         switch (cmd) {
9658         case NL80211_CMD_TESTMODE:
9659                 if (WARN_ON(vendor_event_idx != -1))
9660                         return NULL;
9661                 info = NULL;
9662                 break;
9663         case NL80211_CMD_VENDOR:
9664                 if (WARN_ON(vendor_event_idx < 0 ||
9665                             vendor_event_idx >= wiphy->n_vendor_events))
9666                         return NULL;
9667                 info = &wiphy->vendor_events[vendor_event_idx];
9668                 break;
9669         default:
9670                 WARN_ON(1);
9671                 return NULL;
9672         }
9673
9674         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9675                                            cmd, attr, info, gfp);
9676 }
9677 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9678
9679 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9680 {
9681         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9682         void *hdr = ((void **)skb->cb)[1];
9683         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9684         struct nlattr *data = ((void **)skb->cb)[2];
9685         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9686
9687         /* clear CB data for netlink core to own from now on */
9688         memset(skb->cb, 0, sizeof(skb->cb));
9689
9690         nla_nest_end(skb, data);
9691         genlmsg_end(skb, hdr);
9692
9693         if (nlhdr->nlmsg_pid) {
9694                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9695                                 nlhdr->nlmsg_pid);
9696         } else {
9697                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9698                         mcgrp = NL80211_MCGRP_VENDOR;
9699
9700                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9701                                         skb, 0, mcgrp, gfp);
9702         }
9703 }
9704 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9705
9706 #ifdef CONFIG_NL80211_TESTMODE
9707 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9708 {
9709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9710         struct wireless_dev *wdev =
9711                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9712         int err;
9713
9714         if (!rdev->ops->testmode_cmd)
9715                 return -EOPNOTSUPP;
9716
9717         if (IS_ERR(wdev)) {
9718                 err = PTR_ERR(wdev);
9719                 if (err != -EINVAL)
9720                         return err;
9721                 wdev = NULL;
9722         } else if (wdev->wiphy != &rdev->wiphy) {
9723                 return -EINVAL;
9724         }
9725
9726         if (!info->attrs[NL80211_ATTR_TESTDATA])
9727                 return -EINVAL;
9728
9729         rdev->cur_cmd_info = info;
9730         err = rdev_testmode_cmd(rdev, wdev,
9731                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9732                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9733         rdev->cur_cmd_info = NULL;
9734
9735         return err;
9736 }
9737
9738 static int nl80211_testmode_dump(struct sk_buff *skb,
9739                                  struct netlink_callback *cb)
9740 {
9741         struct cfg80211_registered_device *rdev;
9742         struct nlattr **attrbuf = NULL;
9743         int err;
9744         long phy_idx;
9745         void *data = NULL;
9746         int data_len = 0;
9747
9748         rtnl_lock();
9749
9750         if (cb->args[0]) {
9751                 /*
9752                  * 0 is a valid index, but not valid for args[0],
9753                  * so we need to offset by 1.
9754                  */
9755                 phy_idx = cb->args[0] - 1;
9756
9757                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9758                 if (!rdev) {
9759                         err = -ENOENT;
9760                         goto out_err;
9761                 }
9762         } else {
9763                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9764                                   GFP_KERNEL);
9765                 if (!attrbuf) {
9766                         err = -ENOMEM;
9767                         goto out_err;
9768                 }
9769
9770                 err = nlmsg_parse_deprecated(cb->nlh,
9771                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9772                                              attrbuf, nl80211_fam.maxattr,
9773                                              nl80211_policy, NULL);
9774                 if (err)
9775                         goto out_err;
9776
9777                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9778                 if (IS_ERR(rdev)) {
9779                         err = PTR_ERR(rdev);
9780                         goto out_err;
9781                 }
9782                 phy_idx = rdev->wiphy_idx;
9783
9784                 if (attrbuf[NL80211_ATTR_TESTDATA])
9785                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9786         }
9787
9788         if (cb->args[1]) {
9789                 data = nla_data((void *)cb->args[1]);
9790                 data_len = nla_len((void *)cb->args[1]);
9791         }
9792
9793         if (!rdev->ops->testmode_dump) {
9794                 err = -EOPNOTSUPP;
9795                 goto out_err;
9796         }
9797
9798         while (1) {
9799                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9800                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9801                                            NL80211_CMD_TESTMODE);
9802                 struct nlattr *tmdata;
9803
9804                 if (!hdr)
9805                         break;
9806
9807                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9808                         genlmsg_cancel(skb, hdr);
9809                         break;
9810                 }
9811
9812                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9813                 if (!tmdata) {
9814                         genlmsg_cancel(skb, hdr);
9815                         break;
9816                 }
9817                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9818                 nla_nest_end(skb, tmdata);
9819
9820                 if (err == -ENOBUFS || err == -ENOENT) {
9821                         genlmsg_cancel(skb, hdr);
9822                         break;
9823                 } else if (err) {
9824                         genlmsg_cancel(skb, hdr);
9825                         goto out_err;
9826                 }
9827
9828                 genlmsg_end(skb, hdr);
9829         }
9830
9831         err = skb->len;
9832         /* see above */
9833         cb->args[0] = phy_idx + 1;
9834  out_err:
9835         kfree(attrbuf);
9836         rtnl_unlock();
9837         return err;
9838 }
9839 #endif
9840
9841 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9842 {
9843         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9844         struct net_device *dev = info->user_ptr[1];
9845         struct cfg80211_connect_params connect;
9846         struct wiphy *wiphy;
9847         struct cfg80211_cached_keys *connkeys = NULL;
9848         int err;
9849
9850         memset(&connect, 0, sizeof(connect));
9851
9852         if (!info->attrs[NL80211_ATTR_SSID] ||
9853             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9854                 return -EINVAL;
9855
9856         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9857                 connect.auth_type =
9858                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9859                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9860                                              NL80211_CMD_CONNECT))
9861                         return -EINVAL;
9862         } else
9863                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9864
9865         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9866
9867         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9868             !wiphy_ext_feature_isset(&rdev->wiphy,
9869                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9870                 return -EINVAL;
9871         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9872
9873         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9874                                       NL80211_MAX_NR_CIPHER_SUITES);
9875         if (err)
9876                 return err;
9877
9878         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9879             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9880                 return -EOPNOTSUPP;
9881
9882         wiphy = &rdev->wiphy;
9883
9884         connect.bg_scan_period = -1;
9885         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9886                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9887                 connect.bg_scan_period =
9888                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9889         }
9890
9891         if (info->attrs[NL80211_ATTR_MAC])
9892                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9893         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9894                 connect.bssid_hint =
9895                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9896         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9897         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9898
9899         if (info->attrs[NL80211_ATTR_IE]) {
9900                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9901                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9902         }
9903
9904         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9905                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9906                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9907                     !wiphy_ext_feature_isset(&rdev->wiphy,
9908                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9909                         return -EOPNOTSUPP;
9910         } else {
9911                 connect.mfp = NL80211_MFP_NO;
9912         }
9913
9914         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9915                 connect.prev_bssid =
9916                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9917
9918         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9919                 connect.channel = nl80211_get_valid_chan(
9920                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9921                 if (!connect.channel)
9922                         return -EINVAL;
9923         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9924                 connect.channel_hint = nl80211_get_valid_chan(
9925                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9926                 if (!connect.channel_hint)
9927                         return -EINVAL;
9928         }
9929
9930         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
9931                 connect.edmg.channels =
9932                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
9933
9934                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
9935                         connect.edmg.bw_config =
9936                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
9937         }
9938
9939         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9940                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9941                 if (IS_ERR(connkeys))
9942                         return PTR_ERR(connkeys);
9943         }
9944
9945         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9946                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9947
9948         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9949                 memcpy(&connect.ht_capa_mask,
9950                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9951                        sizeof(connect.ht_capa_mask));
9952
9953         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9954                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9955                         kzfree(connkeys);
9956                         return -EINVAL;
9957                 }
9958                 memcpy(&connect.ht_capa,
9959                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9960                        sizeof(connect.ht_capa));
9961         }
9962
9963         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9964                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9965
9966         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9967                 memcpy(&connect.vht_capa_mask,
9968                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9969                        sizeof(connect.vht_capa_mask));
9970
9971         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9972                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9973                         kzfree(connkeys);
9974                         return -EINVAL;
9975                 }
9976                 memcpy(&connect.vht_capa,
9977                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9978                        sizeof(connect.vht_capa));
9979         }
9980
9981         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9982                 if (!((rdev->wiphy.features &
9983                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9984                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9985                     !wiphy_ext_feature_isset(&rdev->wiphy,
9986                                              NL80211_EXT_FEATURE_RRM)) {
9987                         kzfree(connkeys);
9988                         return -EINVAL;
9989                 }
9990                 connect.flags |= ASSOC_REQ_USE_RRM;
9991         }
9992
9993         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9994         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9995                 kzfree(connkeys);
9996                 return -EOPNOTSUPP;
9997         }
9998
9999         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10000                 /* bss selection makes no sense if bssid is set */
10001                 if (connect.bssid) {
10002                         kzfree(connkeys);
10003                         return -EINVAL;
10004                 }
10005
10006                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10007                                        wiphy, &connect.bss_select);
10008                 if (err) {
10009                         kzfree(connkeys);
10010                         return err;
10011                 }
10012         }
10013
10014         if (wiphy_ext_feature_isset(&rdev->wiphy,
10015                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10016             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10017             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10018             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10019             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10020                 connect.fils_erp_username =
10021                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10022                 connect.fils_erp_username_len =
10023                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10024                 connect.fils_erp_realm =
10025                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10026                 connect.fils_erp_realm_len =
10027                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10028                 connect.fils_erp_next_seq_num =
10029                         nla_get_u16(
10030                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10031                 connect.fils_erp_rrk =
10032                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10033                 connect.fils_erp_rrk_len =
10034                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10035         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10036                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10037                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10038                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10039                 kzfree(connkeys);
10040                 return -EINVAL;
10041         }
10042
10043         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10044                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10045                         kzfree(connkeys);
10046                         GENL_SET_ERR_MSG(info,
10047                                          "external auth requires connection ownership");
10048                         return -EINVAL;
10049                 }
10050                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10051         }
10052
10053         wdev_lock(dev->ieee80211_ptr);
10054
10055         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10056                                connect.prev_bssid);
10057         if (err)
10058                 kzfree(connkeys);
10059
10060         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10061                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10062                 if (connect.bssid)
10063                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10064                                connect.bssid, ETH_ALEN);
10065                 else
10066                         memset(dev->ieee80211_ptr->disconnect_bssid,
10067                                0, ETH_ALEN);
10068         }
10069
10070         wdev_unlock(dev->ieee80211_ptr);
10071
10072         return err;
10073 }
10074
10075 static int nl80211_update_connect_params(struct sk_buff *skb,
10076                                          struct genl_info *info)
10077 {
10078         struct cfg80211_connect_params connect = {};
10079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10080         struct net_device *dev = info->user_ptr[1];
10081         struct wireless_dev *wdev = dev->ieee80211_ptr;
10082         bool fils_sk_offload;
10083         u32 auth_type;
10084         u32 changed = 0;
10085         int ret;
10086
10087         if (!rdev->ops->update_connect_params)
10088                 return -EOPNOTSUPP;
10089
10090         if (info->attrs[NL80211_ATTR_IE]) {
10091                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10092                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10093                 changed |= UPDATE_ASSOC_IES;
10094         }
10095
10096         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10097                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10098
10099         /*
10100          * when driver supports fils-sk offload all attributes must be
10101          * provided. So the else covers "fils-sk-not-all" and
10102          * "no-fils-sk-any".
10103          */
10104         if (fils_sk_offload &&
10105             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10106             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10107             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10108             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10109                 connect.fils_erp_username =
10110                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10111                 connect.fils_erp_username_len =
10112                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10113                 connect.fils_erp_realm =
10114                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10115                 connect.fils_erp_realm_len =
10116                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10117                 connect.fils_erp_next_seq_num =
10118                         nla_get_u16(
10119                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10120                 connect.fils_erp_rrk =
10121                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10122                 connect.fils_erp_rrk_len =
10123                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10124                 changed |= UPDATE_FILS_ERP_INFO;
10125         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10126                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10127                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10128                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10129                 return -EINVAL;
10130         }
10131
10132         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10133                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10134                 if (!nl80211_valid_auth_type(rdev, auth_type,
10135                                              NL80211_CMD_CONNECT))
10136                         return -EINVAL;
10137
10138                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10139                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10140                         return -EINVAL;
10141
10142                 connect.auth_type = auth_type;
10143                 changed |= UPDATE_AUTH_TYPE;
10144         }
10145
10146         wdev_lock(dev->ieee80211_ptr);
10147         if (!wdev->current_bss)
10148                 ret = -ENOLINK;
10149         else
10150                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10151         wdev_unlock(dev->ieee80211_ptr);
10152
10153         return ret;
10154 }
10155
10156 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10157 {
10158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10159         struct net_device *dev = info->user_ptr[1];
10160         u16 reason;
10161         int ret;
10162
10163         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10164             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10165                 return -EPERM;
10166
10167         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10168                 reason = WLAN_REASON_DEAUTH_LEAVING;
10169         else
10170                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10171
10172         if (reason == 0)
10173                 return -EINVAL;
10174
10175         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10176             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10177                 return -EOPNOTSUPP;
10178
10179         wdev_lock(dev->ieee80211_ptr);
10180         ret = cfg80211_disconnect(rdev, dev, reason, true);
10181         wdev_unlock(dev->ieee80211_ptr);
10182         return ret;
10183 }
10184
10185 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10186 {
10187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10188         struct net *net;
10189         int err;
10190
10191         if (info->attrs[NL80211_ATTR_PID]) {
10192                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10193
10194                 net = get_net_ns_by_pid(pid);
10195         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10196                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10197
10198                 net = get_net_ns_by_fd(fd);
10199         } else {
10200                 return -EINVAL;
10201         }
10202
10203         if (IS_ERR(net))
10204                 return PTR_ERR(net);
10205
10206         err = 0;
10207
10208         /* check if anything to do */
10209         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10210                 err = cfg80211_switch_netns(rdev, net);
10211
10212         put_net(net);
10213         return err;
10214 }
10215
10216 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10217 {
10218         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10219         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10220                         struct cfg80211_pmksa *pmksa) = NULL;
10221         struct net_device *dev = info->user_ptr[1];
10222         struct cfg80211_pmksa pmksa;
10223
10224         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10225
10226         if (!info->attrs[NL80211_ATTR_PMKID])
10227                 return -EINVAL;
10228
10229         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10230
10231         if (info->attrs[NL80211_ATTR_MAC]) {
10232                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10233         } else if (info->attrs[NL80211_ATTR_SSID] &&
10234                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10235                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10236                     info->attrs[NL80211_ATTR_PMK])) {
10237                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10238                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10239                 pmksa.cache_id =
10240                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10241         } else {
10242                 return -EINVAL;
10243         }
10244         if (info->attrs[NL80211_ATTR_PMK]) {
10245                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10246                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10247         }
10248
10249         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10250             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10251             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10252               wiphy_ext_feature_isset(&rdev->wiphy,
10253                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10254                 return -EOPNOTSUPP;
10255
10256         switch (info->genlhdr->cmd) {
10257         case NL80211_CMD_SET_PMKSA:
10258                 rdev_ops = rdev->ops->set_pmksa;
10259                 break;
10260         case NL80211_CMD_DEL_PMKSA:
10261                 rdev_ops = rdev->ops->del_pmksa;
10262                 break;
10263         default:
10264                 WARN_ON(1);
10265                 break;
10266         }
10267
10268         if (!rdev_ops)
10269                 return -EOPNOTSUPP;
10270
10271         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10272 }
10273
10274 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10275 {
10276         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10277         struct net_device *dev = info->user_ptr[1];
10278
10279         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10280             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10281                 return -EOPNOTSUPP;
10282
10283         if (!rdev->ops->flush_pmksa)
10284                 return -EOPNOTSUPP;
10285
10286         return rdev_flush_pmksa(rdev, dev);
10287 }
10288
10289 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10290 {
10291         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10292         struct net_device *dev = info->user_ptr[1];
10293         u8 action_code, dialog_token;
10294         u32 peer_capability = 0;
10295         u16 status_code;
10296         u8 *peer;
10297         bool initiator;
10298
10299         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10300             !rdev->ops->tdls_mgmt)
10301                 return -EOPNOTSUPP;
10302
10303         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10304             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10305             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10306             !info->attrs[NL80211_ATTR_IE] ||
10307             !info->attrs[NL80211_ATTR_MAC])
10308                 return -EINVAL;
10309
10310         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10311         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10312         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10313         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10314         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10315         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10316                 peer_capability =
10317                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10318
10319         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10320                               dialog_token, status_code, peer_capability,
10321                               initiator,
10322                               nla_data(info->attrs[NL80211_ATTR_IE]),
10323                               nla_len(info->attrs[NL80211_ATTR_IE]));
10324 }
10325
10326 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10327 {
10328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10329         struct net_device *dev = info->user_ptr[1];
10330         enum nl80211_tdls_operation operation;
10331         u8 *peer;
10332
10333         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10334             !rdev->ops->tdls_oper)
10335                 return -EOPNOTSUPP;
10336
10337         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10338             !info->attrs[NL80211_ATTR_MAC])
10339                 return -EINVAL;
10340
10341         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10342         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10343
10344         return rdev_tdls_oper(rdev, dev, peer, operation);
10345 }
10346
10347 static int nl80211_remain_on_channel(struct sk_buff *skb,
10348                                      struct genl_info *info)
10349 {
10350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10351         struct wireless_dev *wdev = info->user_ptr[1];
10352         struct cfg80211_chan_def chandef;
10353         const struct cfg80211_chan_def *compat_chandef;
10354         struct sk_buff *msg;
10355         void *hdr;
10356         u64 cookie;
10357         u32 duration;
10358         int err;
10359
10360         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10361             !info->attrs[NL80211_ATTR_DURATION])
10362                 return -EINVAL;
10363
10364         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10365
10366         if (!rdev->ops->remain_on_channel ||
10367             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10368                 return -EOPNOTSUPP;
10369
10370         /*
10371          * We should be on that channel for at least a minimum amount of
10372          * time (10ms) but no longer than the driver supports.
10373          */
10374         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10375             duration > rdev->wiphy.max_remain_on_channel_duration)
10376                 return -EINVAL;
10377
10378         err = nl80211_parse_chandef(rdev, info, &chandef);
10379         if (err)
10380                 return err;
10381
10382         wdev_lock(wdev);
10383         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10384             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10385                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10386                                                              &chandef);
10387                 if (compat_chandef != &chandef) {
10388                         wdev_unlock(wdev);
10389                         return -EBUSY;
10390                 }
10391         }
10392         wdev_unlock(wdev);
10393
10394         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10395         if (!msg)
10396                 return -ENOMEM;
10397
10398         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10399                              NL80211_CMD_REMAIN_ON_CHANNEL);
10400         if (!hdr) {
10401                 err = -ENOBUFS;
10402                 goto free_msg;
10403         }
10404
10405         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10406                                      duration, &cookie);
10407
10408         if (err)
10409                 goto free_msg;
10410
10411         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10412                               NL80211_ATTR_PAD))
10413                 goto nla_put_failure;
10414
10415         genlmsg_end(msg, hdr);
10416
10417         return genlmsg_reply(msg, info);
10418
10419  nla_put_failure:
10420         err = -ENOBUFS;
10421  free_msg:
10422         nlmsg_free(msg);
10423         return err;
10424 }
10425
10426 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10427                                             struct genl_info *info)
10428 {
10429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10430         struct wireless_dev *wdev = info->user_ptr[1];
10431         u64 cookie;
10432
10433         if (!info->attrs[NL80211_ATTR_COOKIE])
10434                 return -EINVAL;
10435
10436         if (!rdev->ops->cancel_remain_on_channel)
10437                 return -EOPNOTSUPP;
10438
10439         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10440
10441         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10442 }
10443
10444 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10445                                        struct genl_info *info)
10446 {
10447         struct cfg80211_bitrate_mask mask;
10448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10449         struct net_device *dev = info->user_ptr[1];
10450         int err;
10451
10452         if (!rdev->ops->set_bitrate_mask)
10453                 return -EOPNOTSUPP;
10454
10455         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10456         if (err)
10457                 return err;
10458
10459         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10460 }
10461
10462 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10463 {
10464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10465         struct wireless_dev *wdev = info->user_ptr[1];
10466         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10467
10468         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10469                 return -EINVAL;
10470
10471         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10472                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10473
10474         switch (wdev->iftype) {
10475         case NL80211_IFTYPE_STATION:
10476         case NL80211_IFTYPE_ADHOC:
10477         case NL80211_IFTYPE_P2P_CLIENT:
10478         case NL80211_IFTYPE_AP:
10479         case NL80211_IFTYPE_AP_VLAN:
10480         case NL80211_IFTYPE_MESH_POINT:
10481         case NL80211_IFTYPE_P2P_GO:
10482         case NL80211_IFTYPE_P2P_DEVICE:
10483                 break;
10484         case NL80211_IFTYPE_NAN:
10485         default:
10486                 return -EOPNOTSUPP;
10487         }
10488
10489         /* not much point in registering if we can't reply */
10490         if (!rdev->ops->mgmt_tx)
10491                 return -EOPNOTSUPP;
10492
10493         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10494                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10495                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10496 }
10497
10498 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10499 {
10500         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10501         struct wireless_dev *wdev = info->user_ptr[1];
10502         struct cfg80211_chan_def chandef;
10503         int err;
10504         void *hdr = NULL;
10505         u64 cookie;
10506         struct sk_buff *msg = NULL;
10507         struct cfg80211_mgmt_tx_params params = {
10508                 .dont_wait_for_ack =
10509                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10510         };
10511
10512         if (!info->attrs[NL80211_ATTR_FRAME])
10513                 return -EINVAL;
10514
10515         if (!rdev->ops->mgmt_tx)
10516                 return -EOPNOTSUPP;
10517
10518         switch (wdev->iftype) {
10519         case NL80211_IFTYPE_P2P_DEVICE:
10520                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10521                         return -EINVAL;
10522         case NL80211_IFTYPE_STATION:
10523         case NL80211_IFTYPE_ADHOC:
10524         case NL80211_IFTYPE_P2P_CLIENT:
10525         case NL80211_IFTYPE_AP:
10526         case NL80211_IFTYPE_AP_VLAN:
10527         case NL80211_IFTYPE_MESH_POINT:
10528         case NL80211_IFTYPE_P2P_GO:
10529                 break;
10530         case NL80211_IFTYPE_NAN:
10531         default:
10532                 return -EOPNOTSUPP;
10533         }
10534
10535         if (info->attrs[NL80211_ATTR_DURATION]) {
10536                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10537                         return -EINVAL;
10538                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10539
10540                 /*
10541                  * We should wait on the channel for at least a minimum amount
10542                  * of time (10ms) but no longer than the driver supports.
10543                  */
10544                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10545                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10546                         return -EINVAL;
10547         }
10548
10549         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10550
10551         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10552                 return -EINVAL;
10553
10554         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10555
10556         /* get the channel if any has been specified, otherwise pass NULL to
10557          * the driver. The latter will use the current one
10558          */
10559         chandef.chan = NULL;
10560         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10561                 err = nl80211_parse_chandef(rdev, info, &chandef);
10562                 if (err)
10563                         return err;
10564         }
10565
10566         if (!chandef.chan && params.offchan)
10567                 return -EINVAL;
10568
10569         wdev_lock(wdev);
10570         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10571                 wdev_unlock(wdev);
10572                 return -EBUSY;
10573         }
10574         wdev_unlock(wdev);
10575
10576         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10577         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10578
10579         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10580                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10581                 int i;
10582
10583                 if (len % sizeof(u16))
10584                         return -EINVAL;
10585
10586                 params.n_csa_offsets = len / sizeof(u16);
10587                 params.csa_offsets =
10588                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10589
10590                 /* check that all the offsets fit the frame */
10591                 for (i = 0; i < params.n_csa_offsets; i++) {
10592                         if (params.csa_offsets[i] >= params.len)
10593                                 return -EINVAL;
10594                 }
10595         }
10596
10597         if (!params.dont_wait_for_ack) {
10598                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10599                 if (!msg)
10600                         return -ENOMEM;
10601
10602                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10603                                      NL80211_CMD_FRAME);
10604                 if (!hdr) {
10605                         err = -ENOBUFS;
10606                         goto free_msg;
10607                 }
10608         }
10609
10610         params.chan = chandef.chan;
10611         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10612         if (err)
10613                 goto free_msg;
10614
10615         if (msg) {
10616                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10617                                       NL80211_ATTR_PAD))
10618                         goto nla_put_failure;
10619
10620                 genlmsg_end(msg, hdr);
10621                 return genlmsg_reply(msg, info);
10622         }
10623
10624         return 0;
10625
10626  nla_put_failure:
10627         err = -ENOBUFS;
10628  free_msg:
10629         nlmsg_free(msg);
10630         return err;
10631 }
10632
10633 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10634 {
10635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10636         struct wireless_dev *wdev = info->user_ptr[1];
10637         u64 cookie;
10638
10639         if (!info->attrs[NL80211_ATTR_COOKIE])
10640                 return -EINVAL;
10641
10642         if (!rdev->ops->mgmt_tx_cancel_wait)
10643                 return -EOPNOTSUPP;
10644
10645         switch (wdev->iftype) {
10646         case NL80211_IFTYPE_STATION:
10647         case NL80211_IFTYPE_ADHOC:
10648         case NL80211_IFTYPE_P2P_CLIENT:
10649         case NL80211_IFTYPE_AP:
10650         case NL80211_IFTYPE_AP_VLAN:
10651         case NL80211_IFTYPE_P2P_GO:
10652         case NL80211_IFTYPE_P2P_DEVICE:
10653                 break;
10654         case NL80211_IFTYPE_NAN:
10655         default:
10656                 return -EOPNOTSUPP;
10657         }
10658
10659         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10660
10661         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10662 }
10663
10664 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10665 {
10666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10667         struct wireless_dev *wdev;
10668         struct net_device *dev = info->user_ptr[1];
10669         u8 ps_state;
10670         bool state;
10671         int err;
10672
10673         if (!info->attrs[NL80211_ATTR_PS_STATE])
10674                 return -EINVAL;
10675
10676         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10677
10678         wdev = dev->ieee80211_ptr;
10679
10680         if (!rdev->ops->set_power_mgmt)
10681                 return -EOPNOTSUPP;
10682
10683         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10684
10685         if (state == wdev->ps)
10686                 return 0;
10687
10688         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10689         if (!err)
10690                 wdev->ps = state;
10691         return err;
10692 }
10693
10694 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10695 {
10696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10697         enum nl80211_ps_state ps_state;
10698         struct wireless_dev *wdev;
10699         struct net_device *dev = info->user_ptr[1];
10700         struct sk_buff *msg;
10701         void *hdr;
10702         int err;
10703
10704         wdev = dev->ieee80211_ptr;
10705
10706         if (!rdev->ops->set_power_mgmt)
10707                 return -EOPNOTSUPP;
10708
10709         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10710         if (!msg)
10711                 return -ENOMEM;
10712
10713         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10714                              NL80211_CMD_GET_POWER_SAVE);
10715         if (!hdr) {
10716                 err = -ENOBUFS;
10717                 goto free_msg;
10718         }
10719
10720         if (wdev->ps)
10721                 ps_state = NL80211_PS_ENABLED;
10722         else
10723                 ps_state = NL80211_PS_DISABLED;
10724
10725         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10726                 goto nla_put_failure;
10727
10728         genlmsg_end(msg, hdr);
10729         return genlmsg_reply(msg, info);
10730
10731  nla_put_failure:
10732         err = -ENOBUFS;
10733  free_msg:
10734         nlmsg_free(msg);
10735         return err;
10736 }
10737
10738 static const struct nla_policy
10739 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10740         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10741         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10742         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10743         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10744         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10745         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10746         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10747 };
10748
10749 static int nl80211_set_cqm_txe(struct genl_info *info,
10750                                u32 rate, u32 pkts, u32 intvl)
10751 {
10752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10753         struct net_device *dev = info->user_ptr[1];
10754         struct wireless_dev *wdev = dev->ieee80211_ptr;
10755
10756         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10757                 return -EINVAL;
10758
10759         if (!rdev->ops->set_cqm_txe_config)
10760                 return -EOPNOTSUPP;
10761
10762         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10763             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10764                 return -EOPNOTSUPP;
10765
10766         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10767 }
10768
10769 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10770                                     struct net_device *dev)
10771 {
10772         struct wireless_dev *wdev = dev->ieee80211_ptr;
10773         s32 last, low, high;
10774         u32 hyst;
10775         int i, n, low_index;
10776         int err;
10777
10778         /* RSSI reporting disabled? */
10779         if (!wdev->cqm_config)
10780                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10781
10782         /*
10783          * Obtain current RSSI value if possible, if not and no RSSI threshold
10784          * event has been received yet, we should receive an event after a
10785          * connection is established and enough beacons received to calculate
10786          * the average.
10787          */
10788         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10789             rdev->ops->get_station) {
10790                 struct station_info sinfo = {};
10791                 u8 *mac_addr;
10792
10793                 mac_addr = wdev->current_bss->pub.bssid;
10794
10795                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10796                 if (err)
10797                         return err;
10798
10799                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10800                         wdev->cqm_config->last_rssi_event_value =
10801                                 (s8) sinfo.rx_beacon_signal_avg;
10802         }
10803
10804         last = wdev->cqm_config->last_rssi_event_value;
10805         hyst = wdev->cqm_config->rssi_hyst;
10806         n = wdev->cqm_config->n_rssi_thresholds;
10807
10808         for (i = 0; i < n; i++) {
10809                 i = array_index_nospec(i, n);
10810                 if (last < wdev->cqm_config->rssi_thresholds[i])
10811                         break;
10812         }
10813
10814         low_index = i - 1;
10815         if (low_index >= 0) {
10816                 low_index = array_index_nospec(low_index, n);
10817                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10818         } else {
10819                 low = S32_MIN;
10820         }
10821         if (i < n) {
10822                 i = array_index_nospec(i, n);
10823                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10824         } else {
10825                 high = S32_MAX;
10826         }
10827
10828         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10829 }
10830
10831 static int nl80211_set_cqm_rssi(struct genl_info *info,
10832                                 const s32 *thresholds, int n_thresholds,
10833                                 u32 hysteresis)
10834 {
10835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10836         struct net_device *dev = info->user_ptr[1];
10837         struct wireless_dev *wdev = dev->ieee80211_ptr;
10838         int i, err;
10839         s32 prev = S32_MIN;
10840
10841         /* Check all values negative and sorted */
10842         for (i = 0; i < n_thresholds; i++) {
10843                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10844                         return -EINVAL;
10845
10846                 prev = thresholds[i];
10847         }
10848
10849         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10850             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10851                 return -EOPNOTSUPP;
10852
10853         wdev_lock(wdev);
10854         cfg80211_cqm_config_free(wdev);
10855         wdev_unlock(wdev);
10856
10857         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10858                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10859                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10860
10861                 return rdev_set_cqm_rssi_config(rdev, dev,
10862                                                 thresholds[0], hysteresis);
10863         }
10864
10865         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10866                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10867                 return -EOPNOTSUPP;
10868
10869         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10870                 n_thresholds = 0;
10871
10872         wdev_lock(wdev);
10873         if (n_thresholds) {
10874                 struct cfg80211_cqm_config *cqm_config;
10875
10876                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10877                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10878                 if (!cqm_config) {
10879                         err = -ENOMEM;
10880                         goto unlock;
10881                 }
10882
10883                 cqm_config->rssi_hyst = hysteresis;
10884                 cqm_config->n_rssi_thresholds = n_thresholds;
10885                 memcpy(cqm_config->rssi_thresholds, thresholds,
10886                        n_thresholds * sizeof(s32));
10887
10888                 wdev->cqm_config = cqm_config;
10889         }
10890
10891         err = cfg80211_cqm_rssi_update(rdev, dev);
10892
10893 unlock:
10894         wdev_unlock(wdev);
10895
10896         return err;
10897 }
10898
10899 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10900 {
10901         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10902         struct nlattr *cqm;
10903         int err;
10904
10905         cqm = info->attrs[NL80211_ATTR_CQM];
10906         if (!cqm)
10907                 return -EINVAL;
10908
10909         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10910                                           nl80211_attr_cqm_policy,
10911                                           info->extack);
10912         if (err)
10913                 return err;
10914
10915         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10916             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10917                 const s32 *thresholds =
10918                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10919                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10920                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10921
10922                 if (len % 4)
10923                         return -EINVAL;
10924
10925                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10926                                             hysteresis);
10927         }
10928
10929         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10930             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10931             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10932                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10933                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10934                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10935
10936                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10937         }
10938
10939         return -EINVAL;
10940 }
10941
10942 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10943 {
10944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10945         struct net_device *dev = info->user_ptr[1];
10946         struct ocb_setup setup = {};
10947         int err;
10948
10949         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10950         if (err)
10951                 return err;
10952
10953         return cfg80211_join_ocb(rdev, dev, &setup);
10954 }
10955
10956 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10957 {
10958         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10959         struct net_device *dev = info->user_ptr[1];
10960
10961         return cfg80211_leave_ocb(rdev, dev);
10962 }
10963
10964 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10965 {
10966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10967         struct net_device *dev = info->user_ptr[1];
10968         struct mesh_config cfg;
10969         struct mesh_setup setup;
10970         int err;
10971
10972         /* start with default */
10973         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10974         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10975
10976         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10977                 /* and parse parameters if given */
10978                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10979                 if (err)
10980                         return err;
10981         }
10982
10983         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10984             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10985                 return -EINVAL;
10986
10987         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10988         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10989
10990         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10991             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10992                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10993                         return -EINVAL;
10994
10995         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10996                 setup.beacon_interval =
10997                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10998
10999                 err = cfg80211_validate_beacon_int(rdev,
11000                                                    NL80211_IFTYPE_MESH_POINT,
11001                                                    setup.beacon_interval);
11002                 if (err)
11003                         return err;
11004         }
11005
11006         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11007                 setup.dtim_period =
11008                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11009                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11010                         return -EINVAL;
11011         }
11012
11013         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11014                 /* parse additional setup parameters if given */
11015                 err = nl80211_parse_mesh_setup(info, &setup);
11016                 if (err)
11017                         return err;
11018         }
11019
11020         if (setup.user_mpm)
11021                 cfg.auto_open_plinks = false;
11022
11023         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11024                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11025                 if (err)
11026                         return err;
11027         } else {
11028                 /* __cfg80211_join_mesh() will sort it out */
11029                 setup.chandef.chan = NULL;
11030         }
11031
11032         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11033                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11034                 int n_rates =
11035                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11036                 struct ieee80211_supported_band *sband;
11037
11038                 if (!setup.chandef.chan)
11039                         return -EINVAL;
11040
11041                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11042
11043                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11044                                              &setup.basic_rates);
11045                 if (err)
11046                         return err;
11047         }
11048
11049         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11050                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11051                 if (err)
11052                         return err;
11053
11054                 if (!setup.chandef.chan)
11055                         return -EINVAL;
11056
11057                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11058                                               &setup.beacon_rate);
11059                 if (err)
11060                         return err;
11061         }
11062
11063         setup.userspace_handles_dfs =
11064                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11065
11066         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11067                 int r = validate_pae_over_nl80211(rdev, info);
11068
11069                 if (r < 0)
11070                         return r;
11071
11072                 setup.control_port_over_nl80211 = true;
11073         }
11074
11075         wdev_lock(dev->ieee80211_ptr);
11076         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11077         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11078                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11079         wdev_unlock(dev->ieee80211_ptr);
11080
11081         return err;
11082 }
11083
11084 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11085 {
11086         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11087         struct net_device *dev = info->user_ptr[1];
11088
11089         return cfg80211_leave_mesh(rdev, dev);
11090 }
11091
11092 #ifdef CONFIG_PM
11093 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11094                                         struct cfg80211_registered_device *rdev)
11095 {
11096         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11097         struct nlattr *nl_pats, *nl_pat;
11098         int i, pat_len;
11099
11100         if (!wowlan->n_patterns)
11101                 return 0;
11102
11103         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11104         if (!nl_pats)
11105                 return -ENOBUFS;
11106
11107         for (i = 0; i < wowlan->n_patterns; i++) {
11108                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11109                 if (!nl_pat)
11110                         return -ENOBUFS;
11111                 pat_len = wowlan->patterns[i].pattern_len;
11112                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11113                             wowlan->patterns[i].mask) ||
11114                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11115                             wowlan->patterns[i].pattern) ||
11116                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11117                                 wowlan->patterns[i].pkt_offset))
11118                         return -ENOBUFS;
11119                 nla_nest_end(msg, nl_pat);
11120         }
11121         nla_nest_end(msg, nl_pats);
11122
11123         return 0;
11124 }
11125
11126 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11127                                    struct cfg80211_wowlan_tcp *tcp)
11128 {
11129         struct nlattr *nl_tcp;
11130
11131         if (!tcp)
11132                 return 0;
11133
11134         nl_tcp = nla_nest_start_noflag(msg,
11135                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11136         if (!nl_tcp)
11137                 return -ENOBUFS;
11138
11139         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11140             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11141             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11142             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11143             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11144             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11145                     tcp->payload_len, tcp->payload) ||
11146             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11147                         tcp->data_interval) ||
11148             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11149                     tcp->wake_len, tcp->wake_data) ||
11150             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11151                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11152                 return -ENOBUFS;
11153
11154         if (tcp->payload_seq.len &&
11155             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11156                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11157                 return -ENOBUFS;
11158
11159         if (tcp->payload_tok.len &&
11160             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11161                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11162                     &tcp->payload_tok))
11163                 return -ENOBUFS;
11164
11165         nla_nest_end(msg, nl_tcp);
11166
11167         return 0;
11168 }
11169
11170 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11171                                   struct cfg80211_sched_scan_request *req)
11172 {
11173         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11174         int i;
11175
11176         if (!req)
11177                 return 0;
11178
11179         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11180         if (!nd)
11181                 return -ENOBUFS;
11182
11183         if (req->n_scan_plans == 1 &&
11184             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11185                         req->scan_plans[0].interval * 1000))
11186                 return -ENOBUFS;
11187
11188         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11189                 return -ENOBUFS;
11190
11191         if (req->relative_rssi_set) {
11192                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11193
11194                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11195                                req->relative_rssi))
11196                         return -ENOBUFS;
11197
11198                 rssi_adjust.band = req->rssi_adjust.band;
11199                 rssi_adjust.delta = req->rssi_adjust.delta;
11200                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11201                             sizeof(rssi_adjust), &rssi_adjust))
11202                         return -ENOBUFS;
11203         }
11204
11205         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11206         if (!freqs)
11207                 return -ENOBUFS;
11208
11209         for (i = 0; i < req->n_channels; i++) {
11210                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11211                         return -ENOBUFS;
11212         }
11213
11214         nla_nest_end(msg, freqs);
11215
11216         if (req->n_match_sets) {
11217                 matches = nla_nest_start_noflag(msg,
11218                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11219                 if (!matches)
11220                         return -ENOBUFS;
11221
11222                 for (i = 0; i < req->n_match_sets; i++) {
11223                         match = nla_nest_start_noflag(msg, i);
11224                         if (!match)
11225                                 return -ENOBUFS;
11226
11227                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11228                                     req->match_sets[i].ssid.ssid_len,
11229                                     req->match_sets[i].ssid.ssid))
11230                                 return -ENOBUFS;
11231                         nla_nest_end(msg, match);
11232                 }
11233                 nla_nest_end(msg, matches);
11234         }
11235
11236         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11237         if (!scan_plans)
11238                 return -ENOBUFS;
11239
11240         for (i = 0; i < req->n_scan_plans; i++) {
11241                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11242                 if (!scan_plan)
11243                         return -ENOBUFS;
11244
11245                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11246                                 req->scan_plans[i].interval) ||
11247                     (req->scan_plans[i].iterations &&
11248                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11249                                  req->scan_plans[i].iterations)))
11250                         return -ENOBUFS;
11251                 nla_nest_end(msg, scan_plan);
11252         }
11253         nla_nest_end(msg, scan_plans);
11254
11255         nla_nest_end(msg, nd);
11256
11257         return 0;
11258 }
11259
11260 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11261 {
11262         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11263         struct sk_buff *msg;
11264         void *hdr;
11265         u32 size = NLMSG_DEFAULT_SIZE;
11266
11267         if (!rdev->wiphy.wowlan)
11268                 return -EOPNOTSUPP;
11269
11270         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11271                 /* adjust size to have room for all the data */
11272                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11273                         rdev->wiphy.wowlan_config->tcp->payload_len +
11274                         rdev->wiphy.wowlan_config->tcp->wake_len +
11275                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11276         }
11277
11278         msg = nlmsg_new(size, GFP_KERNEL);
11279         if (!msg)
11280                 return -ENOMEM;
11281
11282         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11283                              NL80211_CMD_GET_WOWLAN);
11284         if (!hdr)
11285                 goto nla_put_failure;
11286
11287         if (rdev->wiphy.wowlan_config) {
11288                 struct nlattr *nl_wowlan;
11289
11290                 nl_wowlan = nla_nest_start_noflag(msg,
11291                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11292                 if (!nl_wowlan)
11293                         goto nla_put_failure;
11294
11295                 if ((rdev->wiphy.wowlan_config->any &&
11296                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11297                     (rdev->wiphy.wowlan_config->disconnect &&
11298                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11299                     (rdev->wiphy.wowlan_config->magic_pkt &&
11300                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11301                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11302                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11303                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11304                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11305                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11306                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11307                     (rdev->wiphy.wowlan_config->rfkill_release &&
11308                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11309                         goto nla_put_failure;
11310
11311                 if (nl80211_send_wowlan_patterns(msg, rdev))
11312                         goto nla_put_failure;
11313
11314                 if (nl80211_send_wowlan_tcp(msg,
11315                                             rdev->wiphy.wowlan_config->tcp))
11316                         goto nla_put_failure;
11317
11318                 if (nl80211_send_wowlan_nd(
11319                             msg,
11320                             rdev->wiphy.wowlan_config->nd_config))
11321                         goto nla_put_failure;
11322
11323                 nla_nest_end(msg, nl_wowlan);
11324         }
11325
11326         genlmsg_end(msg, hdr);
11327         return genlmsg_reply(msg, info);
11328
11329 nla_put_failure:
11330         nlmsg_free(msg);
11331         return -ENOBUFS;
11332 }
11333
11334 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11335                                     struct nlattr *attr,
11336                                     struct cfg80211_wowlan *trig)
11337 {
11338         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11339         struct cfg80211_wowlan_tcp *cfg;
11340         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11341         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11342         u32 size;
11343         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11344         int err, port;
11345
11346         if (!rdev->wiphy.wowlan->tcp)
11347                 return -EINVAL;
11348
11349         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11350                                           nl80211_wowlan_tcp_policy, NULL);
11351         if (err)
11352                 return err;
11353
11354         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11355             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11356             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11357             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11358             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11359             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11360             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11361             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11362                 return -EINVAL;
11363
11364         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11365         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11366                 return -EINVAL;
11367
11368         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11369                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11370             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11371                 return -EINVAL;
11372
11373         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11374         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11375                 return -EINVAL;
11376
11377         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11378         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11379                 return -EINVAL;
11380
11381         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11382                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11383
11384                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11385                 tokens_size = tokln - sizeof(*tok);
11386
11387                 if (!tok->len || tokens_size % tok->len)
11388                         return -EINVAL;
11389                 if (!rdev->wiphy.wowlan->tcp->tok)
11390                         return -EINVAL;
11391                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11392                         return -EINVAL;
11393                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11394                         return -EINVAL;
11395                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11396                         return -EINVAL;
11397                 if (tok->offset + tok->len > data_size)
11398                         return -EINVAL;
11399         }
11400
11401         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11402                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11403                 if (!rdev->wiphy.wowlan->tcp->seq)
11404                         return -EINVAL;
11405                 if (seq->len == 0 || seq->len > 4)
11406                         return -EINVAL;
11407                 if (seq->len + seq->offset > data_size)
11408                         return -EINVAL;
11409         }
11410
11411         size = sizeof(*cfg);
11412         size += data_size;
11413         size += wake_size + wake_mask_size;
11414         size += tokens_size;
11415
11416         cfg = kzalloc(size, GFP_KERNEL);
11417         if (!cfg)
11418                 return -ENOMEM;
11419         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11420         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11421         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11422                ETH_ALEN);
11423         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11424                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11425         else
11426                 port = 0;
11427 #ifdef CONFIG_INET
11428         /* allocate a socket and port for it and use it */
11429         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11430                             IPPROTO_TCP, &cfg->sock, 1);
11431         if (err) {
11432                 kfree(cfg);
11433                 return err;
11434         }
11435         if (inet_csk_get_port(cfg->sock->sk, port)) {
11436                 sock_release(cfg->sock);
11437                 kfree(cfg);
11438                 return -EADDRINUSE;
11439         }
11440         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11441 #else
11442         if (!port) {
11443                 kfree(cfg);
11444                 return -EINVAL;
11445         }
11446         cfg->src_port = port;
11447 #endif
11448
11449         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11450         cfg->payload_len = data_size;
11451         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11452         memcpy((void *)cfg->payload,
11453                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11454                data_size);
11455         if (seq)
11456                 cfg->payload_seq = *seq;
11457         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11458         cfg->wake_len = wake_size;
11459         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11460         memcpy((void *)cfg->wake_data,
11461                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11462                wake_size);
11463         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11464                          data_size + wake_size;
11465         memcpy((void *)cfg->wake_mask,
11466                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11467                wake_mask_size);
11468         if (tok) {
11469                 cfg->tokens_size = tokens_size;
11470                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11471         }
11472
11473         trig->tcp = cfg;
11474
11475         return 0;
11476 }
11477
11478 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11479                                    const struct wiphy_wowlan_support *wowlan,
11480                                    struct nlattr *attr,
11481                                    struct cfg80211_wowlan *trig)
11482 {
11483         struct nlattr **tb;
11484         int err;
11485
11486         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11487         if (!tb)
11488                 return -ENOMEM;
11489
11490         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11491                 err = -EOPNOTSUPP;
11492                 goto out;
11493         }
11494
11495         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11496                                           nl80211_policy, NULL);
11497         if (err)
11498                 goto out;
11499
11500         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11501                                                    wowlan->max_nd_match_sets);
11502         err = PTR_ERR_OR_ZERO(trig->nd_config);
11503         if (err)
11504                 trig->nd_config = NULL;
11505
11506 out:
11507         kfree(tb);
11508         return err;
11509 }
11510
11511 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11512 {
11513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11514         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11515         struct cfg80211_wowlan new_triggers = {};
11516         struct cfg80211_wowlan *ntrig;
11517         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11518         int err, i;
11519         bool prev_enabled = rdev->wiphy.wowlan_config;
11520         bool regular = false;
11521
11522         if (!wowlan)
11523                 return -EOPNOTSUPP;
11524
11525         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11526                 cfg80211_rdev_free_wowlan(rdev);
11527                 rdev->wiphy.wowlan_config = NULL;
11528                 goto set_wakeup;
11529         }
11530
11531         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11532                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11533                                           nl80211_wowlan_policy, info->extack);
11534         if (err)
11535                 return err;
11536
11537         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11538                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11539                         return -EINVAL;
11540                 new_triggers.any = true;
11541         }
11542
11543         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11544                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11545                         return -EINVAL;
11546                 new_triggers.disconnect = true;
11547                 regular = true;
11548         }
11549
11550         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11551                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11552                         return -EINVAL;
11553                 new_triggers.magic_pkt = true;
11554                 regular = true;
11555         }
11556
11557         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11558                 return -EINVAL;
11559
11560         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11561                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11562                         return -EINVAL;
11563                 new_triggers.gtk_rekey_failure = true;
11564                 regular = true;
11565         }
11566
11567         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11568                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11569                         return -EINVAL;
11570                 new_triggers.eap_identity_req = true;
11571                 regular = true;
11572         }
11573
11574         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11575                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11576                         return -EINVAL;
11577                 new_triggers.four_way_handshake = true;
11578                 regular = true;
11579         }
11580
11581         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11582                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11583                         return -EINVAL;
11584                 new_triggers.rfkill_release = true;
11585                 regular = true;
11586         }
11587
11588         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11589                 struct nlattr *pat;
11590                 int n_patterns = 0;
11591                 int rem, pat_len, mask_len, pkt_offset;
11592                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11593
11594                 regular = true;
11595
11596                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11597                                     rem)
11598                         n_patterns++;
11599                 if (n_patterns > wowlan->n_patterns)
11600                         return -EINVAL;
11601
11602                 new_triggers.patterns = kcalloc(n_patterns,
11603                                                 sizeof(new_triggers.patterns[0]),
11604                                                 GFP_KERNEL);
11605                 if (!new_triggers.patterns)
11606                         return -ENOMEM;
11607
11608                 new_triggers.n_patterns = n_patterns;
11609                 i = 0;
11610
11611                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11612                                     rem) {
11613                         u8 *mask_pat;
11614
11615                         err = nla_parse_nested_deprecated(pat_tb,
11616                                                           MAX_NL80211_PKTPAT,
11617                                                           pat,
11618                                                           nl80211_packet_pattern_policy,
11619                                                           info->extack);
11620                         if (err)
11621                                 goto error;
11622
11623                         err = -EINVAL;
11624                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11625                             !pat_tb[NL80211_PKTPAT_PATTERN])
11626                                 goto error;
11627                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11628                         mask_len = DIV_ROUND_UP(pat_len, 8);
11629                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11630                                 goto error;
11631                         if (pat_len > wowlan->pattern_max_len ||
11632                             pat_len < wowlan->pattern_min_len)
11633                                 goto error;
11634
11635                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11636                                 pkt_offset = 0;
11637                         else
11638                                 pkt_offset = nla_get_u32(
11639                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11640                         if (pkt_offset > wowlan->max_pkt_offset)
11641                                 goto error;
11642                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11643
11644                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11645                         if (!mask_pat) {
11646                                 err = -ENOMEM;
11647                                 goto error;
11648                         }
11649                         new_triggers.patterns[i].mask = mask_pat;
11650                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11651                                mask_len);
11652                         mask_pat += mask_len;
11653                         new_triggers.patterns[i].pattern = mask_pat;
11654                         new_triggers.patterns[i].pattern_len = pat_len;
11655                         memcpy(mask_pat,
11656                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11657                                pat_len);
11658                         i++;
11659                 }
11660         }
11661
11662         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11663                 regular = true;
11664                 err = nl80211_parse_wowlan_tcp(
11665                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11666                         &new_triggers);
11667                 if (err)
11668                         goto error;
11669         }
11670
11671         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11672                 regular = true;
11673                 err = nl80211_parse_wowlan_nd(
11674                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11675                         &new_triggers);
11676                 if (err)
11677                         goto error;
11678         }
11679
11680         /* The 'any' trigger means the device continues operating more or less
11681          * as in its normal operation mode and wakes up the host on most of the
11682          * normal interrupts (like packet RX, ...)
11683          * It therefore makes little sense to combine with the more constrained
11684          * wakeup trigger modes.
11685          */
11686         if (new_triggers.any && regular) {
11687                 err = -EINVAL;
11688                 goto error;
11689         }
11690
11691         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11692         if (!ntrig) {
11693                 err = -ENOMEM;
11694                 goto error;
11695         }
11696         cfg80211_rdev_free_wowlan(rdev);
11697         rdev->wiphy.wowlan_config = ntrig;
11698
11699  set_wakeup:
11700         if (rdev->ops->set_wakeup &&
11701             prev_enabled != !!rdev->wiphy.wowlan_config)
11702                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11703
11704         return 0;
11705  error:
11706         for (i = 0; i < new_triggers.n_patterns; i++)
11707                 kfree(new_triggers.patterns[i].mask);
11708         kfree(new_triggers.patterns);
11709         if (new_triggers.tcp && new_triggers.tcp->sock)
11710                 sock_release(new_triggers.tcp->sock);
11711         kfree(new_triggers.tcp);
11712         kfree(new_triggers.nd_config);
11713         return err;
11714 }
11715 #endif
11716
11717 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11718                                        struct cfg80211_registered_device *rdev)
11719 {
11720         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11721         int i, j, pat_len;
11722         struct cfg80211_coalesce_rules *rule;
11723
11724         if (!rdev->coalesce->n_rules)
11725                 return 0;
11726
11727         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11728         if (!nl_rules)
11729                 return -ENOBUFS;
11730
11731         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11732                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11733                 if (!nl_rule)
11734                         return -ENOBUFS;
11735
11736                 rule = &rdev->coalesce->rules[i];
11737                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11738                                 rule->delay))
11739                         return -ENOBUFS;
11740
11741                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11742                                 rule->condition))
11743                         return -ENOBUFS;
11744
11745                 nl_pats = nla_nest_start_noflag(msg,
11746                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11747                 if (!nl_pats)
11748                         return -ENOBUFS;
11749
11750                 for (j = 0; j < rule->n_patterns; j++) {
11751                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11752                         if (!nl_pat)
11753                                 return -ENOBUFS;
11754                         pat_len = rule->patterns[j].pattern_len;
11755                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11756                                     DIV_ROUND_UP(pat_len, 8),
11757                                     rule->patterns[j].mask) ||
11758                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11759                                     rule->patterns[j].pattern) ||
11760                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11761                                         rule->patterns[j].pkt_offset))
11762                                 return -ENOBUFS;
11763                         nla_nest_end(msg, nl_pat);
11764                 }
11765                 nla_nest_end(msg, nl_pats);
11766                 nla_nest_end(msg, nl_rule);
11767         }
11768         nla_nest_end(msg, nl_rules);
11769
11770         return 0;
11771 }
11772
11773 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11774 {
11775         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11776         struct sk_buff *msg;
11777         void *hdr;
11778
11779         if (!rdev->wiphy.coalesce)
11780                 return -EOPNOTSUPP;
11781
11782         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11783         if (!msg)
11784                 return -ENOMEM;
11785
11786         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11787                              NL80211_CMD_GET_COALESCE);
11788         if (!hdr)
11789                 goto nla_put_failure;
11790
11791         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11792                 goto nla_put_failure;
11793
11794         genlmsg_end(msg, hdr);
11795         return genlmsg_reply(msg, info);
11796
11797 nla_put_failure:
11798         nlmsg_free(msg);
11799         return -ENOBUFS;
11800 }
11801
11802 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11803 {
11804         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11805         int i, j;
11806         struct cfg80211_coalesce_rules *rule;
11807
11808         if (!coalesce)
11809                 return;
11810
11811         for (i = 0; i < coalesce->n_rules; i++) {
11812                 rule = &coalesce->rules[i];
11813                 for (j = 0; j < rule->n_patterns; j++)
11814                         kfree(rule->patterns[j].mask);
11815                 kfree(rule->patterns);
11816         }
11817         kfree(coalesce->rules);
11818         kfree(coalesce);
11819         rdev->coalesce = NULL;
11820 }
11821
11822 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11823                                        struct nlattr *rule,
11824                                        struct cfg80211_coalesce_rules *new_rule)
11825 {
11826         int err, i;
11827         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11828         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11829         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11830         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11831
11832         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11833                                           rule, nl80211_coalesce_policy, NULL);
11834         if (err)
11835                 return err;
11836
11837         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11838                 new_rule->delay =
11839                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11840         if (new_rule->delay > coalesce->max_delay)
11841                 return -EINVAL;
11842
11843         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11844                 new_rule->condition =
11845                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11846
11847         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11848                 return -EINVAL;
11849
11850         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11851                             rem)
11852                 n_patterns++;
11853         if (n_patterns > coalesce->n_patterns)
11854                 return -EINVAL;
11855
11856         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11857                                      GFP_KERNEL);
11858         if (!new_rule->patterns)
11859                 return -ENOMEM;
11860
11861         new_rule->n_patterns = n_patterns;
11862         i = 0;
11863
11864         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11865                             rem) {
11866                 u8 *mask_pat;
11867
11868                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11869                                                   pat,
11870                                                   nl80211_packet_pattern_policy,
11871                                                   NULL);
11872                 if (err)
11873                         return err;
11874
11875                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11876                     !pat_tb[NL80211_PKTPAT_PATTERN])
11877                         return -EINVAL;
11878                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11879                 mask_len = DIV_ROUND_UP(pat_len, 8);
11880                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11881                         return -EINVAL;
11882                 if (pat_len > coalesce->pattern_max_len ||
11883                     pat_len < coalesce->pattern_min_len)
11884                         return -EINVAL;
11885
11886                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11887                         pkt_offset = 0;
11888                 else
11889                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11890                 if (pkt_offset > coalesce->max_pkt_offset)
11891                         return -EINVAL;
11892                 new_rule->patterns[i].pkt_offset = pkt_offset;
11893
11894                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11895                 if (!mask_pat)
11896                         return -ENOMEM;
11897
11898                 new_rule->patterns[i].mask = mask_pat;
11899                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11900                        mask_len);
11901
11902                 mask_pat += mask_len;
11903                 new_rule->patterns[i].pattern = mask_pat;
11904                 new_rule->patterns[i].pattern_len = pat_len;
11905                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11906                        pat_len);
11907                 i++;
11908         }
11909
11910         return 0;
11911 }
11912
11913 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11914 {
11915         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11916         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11917         struct cfg80211_coalesce new_coalesce = {};
11918         struct cfg80211_coalesce *n_coalesce;
11919         int err, rem_rule, n_rules = 0, i, j;
11920         struct nlattr *rule;
11921         struct cfg80211_coalesce_rules *tmp_rule;
11922
11923         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11924                 return -EOPNOTSUPP;
11925
11926         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11927                 cfg80211_rdev_free_coalesce(rdev);
11928                 rdev_set_coalesce(rdev, NULL);
11929                 return 0;
11930         }
11931
11932         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11933                             rem_rule)
11934                 n_rules++;
11935         if (n_rules > coalesce->n_rules)
11936                 return -EINVAL;
11937
11938         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11939                                      GFP_KERNEL);
11940         if (!new_coalesce.rules)
11941                 return -ENOMEM;
11942
11943         new_coalesce.n_rules = n_rules;
11944         i = 0;
11945
11946         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11947                             rem_rule) {
11948                 err = nl80211_parse_coalesce_rule(rdev, rule,
11949                                                   &new_coalesce.rules[i]);
11950                 if (err)
11951                         goto error;
11952
11953                 i++;
11954         }
11955
11956         err = rdev_set_coalesce(rdev, &new_coalesce);
11957         if (err)
11958                 goto error;
11959
11960         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11961         if (!n_coalesce) {
11962                 err = -ENOMEM;
11963                 goto error;
11964         }
11965         cfg80211_rdev_free_coalesce(rdev);
11966         rdev->coalesce = n_coalesce;
11967
11968         return 0;
11969 error:
11970         for (i = 0; i < new_coalesce.n_rules; i++) {
11971                 tmp_rule = &new_coalesce.rules[i];
11972                 for (j = 0; j < tmp_rule->n_patterns; j++)
11973                         kfree(tmp_rule->patterns[j].mask);
11974                 kfree(tmp_rule->patterns);
11975         }
11976         kfree(new_coalesce.rules);
11977
11978         return err;
11979 }
11980
11981 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11982 {
11983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11984         struct net_device *dev = info->user_ptr[1];
11985         struct wireless_dev *wdev = dev->ieee80211_ptr;
11986         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11987         struct cfg80211_gtk_rekey_data rekey_data;
11988         int err;
11989
11990         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11991                 return -EINVAL;
11992
11993         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
11994                                           info->attrs[NL80211_ATTR_REKEY_DATA],
11995                                           nl80211_rekey_policy, info->extack);
11996         if (err)
11997                 return err;
11998
11999         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12000             !tb[NL80211_REKEY_DATA_KCK])
12001                 return -EINVAL;
12002         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12003                 return -ERANGE;
12004         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12005                 return -ERANGE;
12006         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12007                 return -ERANGE;
12008
12009         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12010         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12011         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12012
12013         wdev_lock(wdev);
12014         if (!wdev->current_bss) {
12015                 err = -ENOTCONN;
12016                 goto out;
12017         }
12018
12019         if (!rdev->ops->set_rekey_data) {
12020                 err = -EOPNOTSUPP;
12021                 goto out;
12022         }
12023
12024         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12025  out:
12026         wdev_unlock(wdev);
12027         return err;
12028 }
12029
12030 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12031                                              struct genl_info *info)
12032 {
12033         struct net_device *dev = info->user_ptr[1];
12034         struct wireless_dev *wdev = dev->ieee80211_ptr;
12035
12036         if (wdev->iftype != NL80211_IFTYPE_AP &&
12037             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12038                 return -EINVAL;
12039
12040         if (wdev->ap_unexpected_nlportid)
12041                 return -EBUSY;
12042
12043         wdev->ap_unexpected_nlportid = info->snd_portid;
12044         return 0;
12045 }
12046
12047 static int nl80211_probe_client(struct sk_buff *skb,
12048                                 struct genl_info *info)
12049 {
12050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12051         struct net_device *dev = info->user_ptr[1];
12052         struct wireless_dev *wdev = dev->ieee80211_ptr;
12053         struct sk_buff *msg;
12054         void *hdr;
12055         const u8 *addr;
12056         u64 cookie;
12057         int err;
12058
12059         if (wdev->iftype != NL80211_IFTYPE_AP &&
12060             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12061                 return -EOPNOTSUPP;
12062
12063         if (!info->attrs[NL80211_ATTR_MAC])
12064                 return -EINVAL;
12065
12066         if (!rdev->ops->probe_client)
12067                 return -EOPNOTSUPP;
12068
12069         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12070         if (!msg)
12071                 return -ENOMEM;
12072
12073         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12074                              NL80211_CMD_PROBE_CLIENT);
12075         if (!hdr) {
12076                 err = -ENOBUFS;
12077                 goto free_msg;
12078         }
12079
12080         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12081
12082         err = rdev_probe_client(rdev, dev, addr, &cookie);
12083         if (err)
12084                 goto free_msg;
12085
12086         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12087                               NL80211_ATTR_PAD))
12088                 goto nla_put_failure;
12089
12090         genlmsg_end(msg, hdr);
12091
12092         return genlmsg_reply(msg, info);
12093
12094  nla_put_failure:
12095         err = -ENOBUFS;
12096  free_msg:
12097         nlmsg_free(msg);
12098         return err;
12099 }
12100
12101 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12102 {
12103         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12104         struct cfg80211_beacon_registration *reg, *nreg;
12105         int rv;
12106
12107         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12108                 return -EOPNOTSUPP;
12109
12110         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12111         if (!nreg)
12112                 return -ENOMEM;
12113
12114         /* First, check if already registered. */
12115         spin_lock_bh(&rdev->beacon_registrations_lock);
12116         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12117                 if (reg->nlportid == info->snd_portid) {
12118                         rv = -EALREADY;
12119                         goto out_err;
12120                 }
12121         }
12122         /* Add it to the list */
12123         nreg->nlportid = info->snd_portid;
12124         list_add(&nreg->list, &rdev->beacon_registrations);
12125
12126         spin_unlock_bh(&rdev->beacon_registrations_lock);
12127
12128         return 0;
12129 out_err:
12130         spin_unlock_bh(&rdev->beacon_registrations_lock);
12131         kfree(nreg);
12132         return rv;
12133 }
12134
12135 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12136 {
12137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12138         struct wireless_dev *wdev = info->user_ptr[1];
12139         int err;
12140
12141         if (!rdev->ops->start_p2p_device)
12142                 return -EOPNOTSUPP;
12143
12144         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12145                 return -EOPNOTSUPP;
12146
12147         if (wdev_running(wdev))
12148                 return 0;
12149
12150         if (rfkill_blocked(rdev->rfkill))
12151                 return -ERFKILL;
12152
12153         err = rdev_start_p2p_device(rdev, wdev);
12154         if (err)
12155                 return err;
12156
12157         wdev->is_running = true;
12158         rdev->opencount++;
12159
12160         return 0;
12161 }
12162
12163 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12164 {
12165         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12166         struct wireless_dev *wdev = info->user_ptr[1];
12167
12168         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12169                 return -EOPNOTSUPP;
12170
12171         if (!rdev->ops->stop_p2p_device)
12172                 return -EOPNOTSUPP;
12173
12174         cfg80211_stop_p2p_device(rdev, wdev);
12175
12176         return 0;
12177 }
12178
12179 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12180 {
12181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12182         struct wireless_dev *wdev = info->user_ptr[1];
12183         struct cfg80211_nan_conf conf = {};
12184         int err;
12185
12186         if (wdev->iftype != NL80211_IFTYPE_NAN)
12187                 return -EOPNOTSUPP;
12188
12189         if (wdev_running(wdev))
12190                 return -EEXIST;
12191
12192         if (rfkill_blocked(rdev->rfkill))
12193                 return -ERFKILL;
12194
12195         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12196                 return -EINVAL;
12197
12198         conf.master_pref =
12199                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12200
12201         if (info->attrs[NL80211_ATTR_BANDS]) {
12202                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12203
12204                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12205                         return -EOPNOTSUPP;
12206
12207                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12208                         return -EINVAL;
12209
12210                 conf.bands = bands;
12211         }
12212
12213         err = rdev_start_nan(rdev, wdev, &conf);
12214         if (err)
12215                 return err;
12216
12217         wdev->is_running = true;
12218         rdev->opencount++;
12219
12220         return 0;
12221 }
12222
12223 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12224 {
12225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12226         struct wireless_dev *wdev = info->user_ptr[1];
12227
12228         if (wdev->iftype != NL80211_IFTYPE_NAN)
12229                 return -EOPNOTSUPP;
12230
12231         cfg80211_stop_nan(rdev, wdev);
12232
12233         return 0;
12234 }
12235
12236 static int validate_nan_filter(struct nlattr *filter_attr)
12237 {
12238         struct nlattr *attr;
12239         int len = 0, n_entries = 0, rem;
12240
12241         nla_for_each_nested(attr, filter_attr, rem) {
12242                 len += nla_len(attr);
12243                 n_entries++;
12244         }
12245
12246         if (len >= U8_MAX)
12247                 return -EINVAL;
12248
12249         return n_entries;
12250 }
12251
12252 static int handle_nan_filter(struct nlattr *attr_filter,
12253                              struct cfg80211_nan_func *func,
12254                              bool tx)
12255 {
12256         struct nlattr *attr;
12257         int n_entries, rem, i;
12258         struct cfg80211_nan_func_filter *filter;
12259
12260         n_entries = validate_nan_filter(attr_filter);
12261         if (n_entries < 0)
12262                 return n_entries;
12263
12264         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12265
12266         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12267         if (!filter)
12268                 return -ENOMEM;
12269
12270         i = 0;
12271         nla_for_each_nested(attr, attr_filter, rem) {
12272                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12273                 filter[i].len = nla_len(attr);
12274                 i++;
12275         }
12276         if (tx) {
12277                 func->num_tx_filters = n_entries;
12278                 func->tx_filters = filter;
12279         } else {
12280                 func->num_rx_filters = n_entries;
12281                 func->rx_filters = filter;
12282         }
12283
12284         return 0;
12285 }
12286
12287 static int nl80211_nan_add_func(struct sk_buff *skb,
12288                                 struct genl_info *info)
12289 {
12290         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12291         struct wireless_dev *wdev = info->user_ptr[1];
12292         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12293         struct cfg80211_nan_func *func;
12294         struct sk_buff *msg = NULL;
12295         void *hdr = NULL;
12296         int err = 0;
12297
12298         if (wdev->iftype != NL80211_IFTYPE_NAN)
12299                 return -EOPNOTSUPP;
12300
12301         if (!wdev_running(wdev))
12302                 return -ENOTCONN;
12303
12304         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12305                 return -EINVAL;
12306
12307         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12308                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12309                                           nl80211_nan_func_policy,
12310                                           info->extack);
12311         if (err)
12312                 return err;
12313
12314         func = kzalloc(sizeof(*func), GFP_KERNEL);
12315         if (!func)
12316                 return -ENOMEM;
12317
12318         func->cookie = cfg80211_assign_cookie(rdev);
12319
12320         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12321             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12322                 err = -EINVAL;
12323                 goto out;
12324         }
12325
12326
12327         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12328
12329         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12330                 err = -EINVAL;
12331                 goto out;
12332         }
12333
12334         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12335                sizeof(func->service_id));
12336
12337         func->close_range =
12338                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12339
12340         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12341                 func->serv_spec_info_len =
12342                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12343                 func->serv_spec_info =
12344                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12345                                 func->serv_spec_info_len,
12346                                 GFP_KERNEL);
12347                 if (!func->serv_spec_info) {
12348                         err = -ENOMEM;
12349                         goto out;
12350                 }
12351         }
12352
12353         if (tb[NL80211_NAN_FUNC_TTL])
12354                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12355
12356         switch (func->type) {
12357         case NL80211_NAN_FUNC_PUBLISH:
12358                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12359                         err = -EINVAL;
12360                         goto out;
12361                 }
12362
12363                 func->publish_type =
12364                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12365                 func->publish_bcast =
12366                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12367
12368                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12369                         func->publish_bcast) {
12370                         err = -EINVAL;
12371                         goto out;
12372                 }
12373                 break;
12374         case NL80211_NAN_FUNC_SUBSCRIBE:
12375                 func->subscribe_active =
12376                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12377                 break;
12378         case NL80211_NAN_FUNC_FOLLOW_UP:
12379                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12380                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12381                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12382                         err = -EINVAL;
12383                         goto out;
12384                 }
12385
12386                 func->followup_id =
12387                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12388                 func->followup_reqid =
12389                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12390                 memcpy(func->followup_dest.addr,
12391                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12392                        sizeof(func->followup_dest.addr));
12393                 if (func->ttl) {
12394                         err = -EINVAL;
12395                         goto out;
12396                 }
12397                 break;
12398         default:
12399                 err = -EINVAL;
12400                 goto out;
12401         }
12402
12403         if (tb[NL80211_NAN_FUNC_SRF]) {
12404                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12405
12406                 err = nla_parse_nested_deprecated(srf_tb,
12407                                                   NL80211_NAN_SRF_ATTR_MAX,
12408                                                   tb[NL80211_NAN_FUNC_SRF],
12409                                                   nl80211_nan_srf_policy,
12410                                                   info->extack);
12411                 if (err)
12412                         goto out;
12413
12414                 func->srf_include =
12415                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12416
12417                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12418                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12419                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12420                                 err = -EINVAL;
12421                                 goto out;
12422                         }
12423
12424                         func->srf_bf_len =
12425                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12426                         func->srf_bf =
12427                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12428                                         func->srf_bf_len, GFP_KERNEL);
12429                         if (!func->srf_bf) {
12430                                 err = -ENOMEM;
12431                                 goto out;
12432                         }
12433
12434                         func->srf_bf_idx =
12435                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12436                 } else {
12437                         struct nlattr *attr, *mac_attr =
12438                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12439                         int n_entries, rem, i = 0;
12440
12441                         if (!mac_attr) {
12442                                 err = -EINVAL;
12443                                 goto out;
12444                         }
12445
12446                         n_entries = validate_acl_mac_addrs(mac_attr);
12447                         if (n_entries <= 0) {
12448                                 err = -EINVAL;
12449                                 goto out;
12450                         }
12451
12452                         func->srf_num_macs = n_entries;
12453                         func->srf_macs =
12454                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12455                                         GFP_KERNEL);
12456                         if (!func->srf_macs) {
12457                                 err = -ENOMEM;
12458                                 goto out;
12459                         }
12460
12461                         nla_for_each_nested(attr, mac_attr, rem)
12462                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12463                                        sizeof(*func->srf_macs));
12464                 }
12465         }
12466
12467         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12468                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12469                                         func, true);
12470                 if (err)
12471                         goto out;
12472         }
12473
12474         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12475                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12476                                         func, false);
12477                 if (err)
12478                         goto out;
12479         }
12480
12481         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12482         if (!msg) {
12483                 err = -ENOMEM;
12484                 goto out;
12485         }
12486
12487         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12488                              NL80211_CMD_ADD_NAN_FUNCTION);
12489         /* This can't really happen - we just allocated 4KB */
12490         if (WARN_ON(!hdr)) {
12491                 err = -ENOMEM;
12492                 goto out;
12493         }
12494
12495         err = rdev_add_nan_func(rdev, wdev, func);
12496 out:
12497         if (err < 0) {
12498                 cfg80211_free_nan_func(func);
12499                 nlmsg_free(msg);
12500                 return err;
12501         }
12502
12503         /* propagate the instance id and cookie to userspace  */
12504         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12505                               NL80211_ATTR_PAD))
12506                 goto nla_put_failure;
12507
12508         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12509         if (!func_attr)
12510                 goto nla_put_failure;
12511
12512         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12513                        func->instance_id))
12514                 goto nla_put_failure;
12515
12516         nla_nest_end(msg, func_attr);
12517
12518         genlmsg_end(msg, hdr);
12519         return genlmsg_reply(msg, info);
12520
12521 nla_put_failure:
12522         nlmsg_free(msg);
12523         return -ENOBUFS;
12524 }
12525
12526 static int nl80211_nan_del_func(struct sk_buff *skb,
12527                                struct genl_info *info)
12528 {
12529         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12530         struct wireless_dev *wdev = info->user_ptr[1];
12531         u64 cookie;
12532
12533         if (wdev->iftype != NL80211_IFTYPE_NAN)
12534                 return -EOPNOTSUPP;
12535
12536         if (!wdev_running(wdev))
12537                 return -ENOTCONN;
12538
12539         if (!info->attrs[NL80211_ATTR_COOKIE])
12540                 return -EINVAL;
12541
12542         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12543
12544         rdev_del_nan_func(rdev, wdev, cookie);
12545
12546         return 0;
12547 }
12548
12549 static int nl80211_nan_change_config(struct sk_buff *skb,
12550                                      struct genl_info *info)
12551 {
12552         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12553         struct wireless_dev *wdev = info->user_ptr[1];
12554         struct cfg80211_nan_conf conf = {};
12555         u32 changed = 0;
12556
12557         if (wdev->iftype != NL80211_IFTYPE_NAN)
12558                 return -EOPNOTSUPP;
12559
12560         if (!wdev_running(wdev))
12561                 return -ENOTCONN;
12562
12563         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12564                 conf.master_pref =
12565                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12566                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12567                         return -EINVAL;
12568
12569                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12570         }
12571
12572         if (info->attrs[NL80211_ATTR_BANDS]) {
12573                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12574
12575                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12576                         return -EOPNOTSUPP;
12577
12578                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12579                         return -EINVAL;
12580
12581                 conf.bands = bands;
12582                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12583         }
12584
12585         if (!changed)
12586                 return -EINVAL;
12587
12588         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12589 }
12590
12591 void cfg80211_nan_match(struct wireless_dev *wdev,
12592                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12593 {
12594         struct wiphy *wiphy = wdev->wiphy;
12595         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12596         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12597         struct sk_buff *msg;
12598         void *hdr;
12599
12600         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12601                 return;
12602
12603         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12604         if (!msg)
12605                 return;
12606
12607         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12608         if (!hdr) {
12609                 nlmsg_free(msg);
12610                 return;
12611         }
12612
12613         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12614             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12615                                          wdev->netdev->ifindex)) ||
12616             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12617                               NL80211_ATTR_PAD))
12618                 goto nla_put_failure;
12619
12620         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12621                               NL80211_ATTR_PAD) ||
12622             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12623                 goto nla_put_failure;
12624
12625         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12626         if (!match_attr)
12627                 goto nla_put_failure;
12628
12629         local_func_attr = nla_nest_start_noflag(msg,
12630                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12631         if (!local_func_attr)
12632                 goto nla_put_failure;
12633
12634         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12635                 goto nla_put_failure;
12636
12637         nla_nest_end(msg, local_func_attr);
12638
12639         peer_func_attr = nla_nest_start_noflag(msg,
12640                                                NL80211_NAN_MATCH_FUNC_PEER);
12641         if (!peer_func_attr)
12642                 goto nla_put_failure;
12643
12644         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12645             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12646                 goto nla_put_failure;
12647
12648         if (match->info && match->info_len &&
12649             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12650                     match->info))
12651                 goto nla_put_failure;
12652
12653         nla_nest_end(msg, peer_func_attr);
12654         nla_nest_end(msg, match_attr);
12655         genlmsg_end(msg, hdr);
12656
12657         if (!wdev->owner_nlportid)
12658                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12659                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12660         else
12661                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12662                                 wdev->owner_nlportid);
12663
12664         return;
12665
12666 nla_put_failure:
12667         nlmsg_free(msg);
12668 }
12669 EXPORT_SYMBOL(cfg80211_nan_match);
12670
12671 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12672                                   u8 inst_id,
12673                                   enum nl80211_nan_func_term_reason reason,
12674                                   u64 cookie, gfp_t gfp)
12675 {
12676         struct wiphy *wiphy = wdev->wiphy;
12677         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12678         struct sk_buff *msg;
12679         struct nlattr *func_attr;
12680         void *hdr;
12681
12682         if (WARN_ON(!inst_id))
12683                 return;
12684
12685         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12686         if (!msg)
12687                 return;
12688
12689         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12690         if (!hdr) {
12691                 nlmsg_free(msg);
12692                 return;
12693         }
12694
12695         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12696             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12697                                          wdev->netdev->ifindex)) ||
12698             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12699                               NL80211_ATTR_PAD))
12700                 goto nla_put_failure;
12701
12702         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12703                               NL80211_ATTR_PAD))
12704                 goto nla_put_failure;
12705
12706         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12707         if (!func_attr)
12708                 goto nla_put_failure;
12709
12710         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12711             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12712                 goto nla_put_failure;
12713
12714         nla_nest_end(msg, func_attr);
12715         genlmsg_end(msg, hdr);
12716
12717         if (!wdev->owner_nlportid)
12718                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12719                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12720         else
12721                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12722                                 wdev->owner_nlportid);
12723
12724         return;
12725
12726 nla_put_failure:
12727         nlmsg_free(msg);
12728 }
12729 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12730
12731 static int nl80211_get_protocol_features(struct sk_buff *skb,
12732                                          struct genl_info *info)
12733 {
12734         void *hdr;
12735         struct sk_buff *msg;
12736
12737         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12738         if (!msg)
12739                 return -ENOMEM;
12740
12741         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12742                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12743         if (!hdr)
12744                 goto nla_put_failure;
12745
12746         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12747                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12748                 goto nla_put_failure;
12749
12750         genlmsg_end(msg, hdr);
12751         return genlmsg_reply(msg, info);
12752
12753  nla_put_failure:
12754         kfree_skb(msg);
12755         return -ENOBUFS;
12756 }
12757
12758 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12759 {
12760         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12761         struct cfg80211_update_ft_ies_params ft_params;
12762         struct net_device *dev = info->user_ptr[1];
12763
12764         if (!rdev->ops->update_ft_ies)
12765                 return -EOPNOTSUPP;
12766
12767         if (!info->attrs[NL80211_ATTR_MDID] ||
12768             !info->attrs[NL80211_ATTR_IE])
12769                 return -EINVAL;
12770
12771         memset(&ft_params, 0, sizeof(ft_params));
12772         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12773         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12774         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12775
12776         return rdev_update_ft_ies(rdev, dev, &ft_params);
12777 }
12778
12779 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12780                                        struct genl_info *info)
12781 {
12782         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12783         struct wireless_dev *wdev = info->user_ptr[1];
12784         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12785         u16 duration;
12786         int ret;
12787
12788         if (!rdev->ops->crit_proto_start)
12789                 return -EOPNOTSUPP;
12790
12791         if (WARN_ON(!rdev->ops->crit_proto_stop))
12792                 return -EINVAL;
12793
12794         if (rdev->crit_proto_nlportid)
12795                 return -EBUSY;
12796
12797         /* determine protocol if provided */
12798         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12799                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12800
12801         if (proto >= NUM_NL80211_CRIT_PROTO)
12802                 return -EINVAL;
12803
12804         /* timeout must be provided */
12805         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12806                 return -EINVAL;
12807
12808         duration =
12809                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12810
12811         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12812                 return -ERANGE;
12813
12814         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12815         if (!ret)
12816                 rdev->crit_proto_nlportid = info->snd_portid;
12817
12818         return ret;
12819 }
12820
12821 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12822                                       struct genl_info *info)
12823 {
12824         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12825         struct wireless_dev *wdev = info->user_ptr[1];
12826
12827         if (!rdev->ops->crit_proto_stop)
12828                 return -EOPNOTSUPP;
12829
12830         if (rdev->crit_proto_nlportid) {
12831                 rdev->crit_proto_nlportid = 0;
12832                 rdev_crit_proto_stop(rdev, wdev);
12833         }
12834         return 0;
12835 }
12836
12837 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12838                                        struct nlattr *attr,
12839                                        struct netlink_ext_ack *extack)
12840 {
12841         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12842                 if (attr->nla_type & NLA_F_NESTED) {
12843                         NL_SET_ERR_MSG_ATTR(extack, attr,
12844                                             "unexpected nested data");
12845                         return -EINVAL;
12846                 }
12847
12848                 return 0;
12849         }
12850
12851         if (!(attr->nla_type & NLA_F_NESTED)) {
12852                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12853                 return -EINVAL;
12854         }
12855
12856         return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12857                                        extack);
12858 }
12859
12860 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12861 {
12862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12863         struct wireless_dev *wdev =
12864                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12865         int i, err;
12866         u32 vid, subcmd;
12867
12868         if (!rdev->wiphy.vendor_commands)
12869                 return -EOPNOTSUPP;
12870
12871         if (IS_ERR(wdev)) {
12872                 err = PTR_ERR(wdev);
12873                 if (err != -EINVAL)
12874                         return err;
12875                 wdev = NULL;
12876         } else if (wdev->wiphy != &rdev->wiphy) {
12877                 return -EINVAL;
12878         }
12879
12880         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12881             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12882                 return -EINVAL;
12883
12884         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12885         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12886         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12887                 const struct wiphy_vendor_command *vcmd;
12888                 void *data = NULL;
12889                 int len = 0;
12890
12891                 vcmd = &rdev->wiphy.vendor_commands[i];
12892
12893                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12894                         continue;
12895
12896                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12897                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12898                         if (!wdev)
12899                                 return -EINVAL;
12900                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12901                             !wdev->netdev)
12902                                 return -EINVAL;
12903
12904                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12905                                 if (!wdev_running(wdev))
12906                                         return -ENETDOWN;
12907                         }
12908
12909                         if (!vcmd->doit)
12910                                 return -EOPNOTSUPP;
12911                 } else {
12912                         wdev = NULL;
12913                 }
12914
12915                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12916                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12917                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12918
12919                         err = nl80211_vendor_check_policy(vcmd,
12920                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12921                                         info->extack);
12922                         if (err)
12923                                 return err;
12924                 }
12925
12926                 rdev->cur_cmd_info = info;
12927                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12928                 rdev->cur_cmd_info = NULL;
12929                 return err;
12930         }
12931
12932         return -EOPNOTSUPP;
12933 }
12934
12935 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12936                                        struct netlink_callback *cb,
12937                                        struct cfg80211_registered_device **rdev,
12938                                        struct wireless_dev **wdev)
12939 {
12940         struct nlattr **attrbuf;
12941         u32 vid, subcmd;
12942         unsigned int i;
12943         int vcmd_idx = -1;
12944         int err;
12945         void *data = NULL;
12946         unsigned int data_len = 0;
12947
12948         if (cb->args[0]) {
12949                 /* subtract the 1 again here */
12950                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12951                 struct wireless_dev *tmp;
12952
12953                 if (!wiphy)
12954                         return -ENODEV;
12955                 *rdev = wiphy_to_rdev(wiphy);
12956                 *wdev = NULL;
12957
12958                 if (cb->args[1]) {
12959                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12960                                 if (tmp->identifier == cb->args[1] - 1) {
12961                                         *wdev = tmp;
12962                                         break;
12963                                 }
12964                         }
12965                 }
12966
12967                 /* keep rtnl locked in successful case */
12968                 return 0;
12969         }
12970
12971         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
12972         if (!attrbuf)
12973                 return -ENOMEM;
12974
12975         err = nlmsg_parse_deprecated(cb->nlh,
12976                                      GENL_HDRLEN + nl80211_fam.hdrsize,
12977                                      attrbuf, nl80211_fam.maxattr,
12978                                      nl80211_policy, NULL);
12979         if (err)
12980                 goto out;
12981
12982         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12983             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
12984                 err = -EINVAL;
12985                 goto out;
12986         }
12987
12988         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12989         if (IS_ERR(*wdev))
12990                 *wdev = NULL;
12991
12992         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12993         if (IS_ERR(*rdev)) {
12994                 err = PTR_ERR(*rdev);
12995                 goto out;
12996         }
12997
12998         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12999         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13000
13001         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13002                 const struct wiphy_vendor_command *vcmd;
13003
13004                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13005
13006                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13007                         continue;
13008
13009                 if (!vcmd->dumpit) {
13010                         err = -EOPNOTSUPP;
13011                         goto out;
13012                 }
13013
13014                 vcmd_idx = i;
13015                 break;
13016         }
13017
13018         if (vcmd_idx < 0) {
13019                 err = -EOPNOTSUPP;
13020                 goto out;
13021         }
13022
13023         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13024                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13025                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13026
13027                 err = nl80211_vendor_check_policy(
13028                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13029                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13030                                 cb->extack);
13031                 if (err)
13032                         goto out;
13033         }
13034
13035         /* 0 is the first index - add 1 to parse only once */
13036         cb->args[0] = (*rdev)->wiphy_idx + 1;
13037         /* add 1 to know if it was NULL */
13038         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13039         cb->args[2] = vcmd_idx;
13040         cb->args[3] = (unsigned long)data;
13041         cb->args[4] = data_len;
13042
13043         /* keep rtnl locked in successful case */
13044         err = 0;
13045 out:
13046         kfree(attrbuf);
13047         return err;
13048 }
13049
13050 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13051                                    struct netlink_callback *cb)
13052 {
13053         struct cfg80211_registered_device *rdev;
13054         struct wireless_dev *wdev;
13055         unsigned int vcmd_idx;
13056         const struct wiphy_vendor_command *vcmd;
13057         void *data;
13058         int data_len;
13059         int err;
13060         struct nlattr *vendor_data;
13061
13062         rtnl_lock();
13063         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13064         if (err)
13065                 goto out;
13066
13067         vcmd_idx = cb->args[2];
13068         data = (void *)cb->args[3];
13069         data_len = cb->args[4];
13070         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13071
13072         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13073                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13074                 if (!wdev) {
13075                         err = -EINVAL;
13076                         goto out;
13077                 }
13078                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13079                     !wdev->netdev) {
13080                         err = -EINVAL;
13081                         goto out;
13082                 }
13083
13084                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13085                         if (!wdev_running(wdev)) {
13086                                 err = -ENETDOWN;
13087                                 goto out;
13088                         }
13089                 }
13090         }
13091
13092         while (1) {
13093                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13094                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13095                                            NL80211_CMD_VENDOR);
13096                 if (!hdr)
13097                         break;
13098
13099                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13100                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13101                                                wdev_id(wdev),
13102                                                NL80211_ATTR_PAD))) {
13103                         genlmsg_cancel(skb, hdr);
13104                         break;
13105                 }
13106
13107                 vendor_data = nla_nest_start_noflag(skb,
13108                                                     NL80211_ATTR_VENDOR_DATA);
13109                 if (!vendor_data) {
13110                         genlmsg_cancel(skb, hdr);
13111                         break;
13112                 }
13113
13114                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13115                                    (unsigned long *)&cb->args[5]);
13116                 nla_nest_end(skb, vendor_data);
13117
13118                 if (err == -ENOBUFS || err == -ENOENT) {
13119                         genlmsg_cancel(skb, hdr);
13120                         break;
13121                 } else if (err) {
13122                         genlmsg_cancel(skb, hdr);
13123                         goto out;
13124                 }
13125
13126                 genlmsg_end(skb, hdr);
13127         }
13128
13129         err = skb->len;
13130  out:
13131         rtnl_unlock();
13132         return err;
13133 }
13134
13135 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13136                                            enum nl80211_commands cmd,
13137                                            enum nl80211_attrs attr,
13138                                            int approxlen)
13139 {
13140         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13141
13142         if (WARN_ON(!rdev->cur_cmd_info))
13143                 return NULL;
13144
13145         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13146                                            rdev->cur_cmd_info->snd_portid,
13147                                            rdev->cur_cmd_info->snd_seq,
13148                                            cmd, attr, NULL, GFP_KERNEL);
13149 }
13150 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13151
13152 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13153 {
13154         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13155         void *hdr = ((void **)skb->cb)[1];
13156         struct nlattr *data = ((void **)skb->cb)[2];
13157
13158         /* clear CB data for netlink core to own from now on */
13159         memset(skb->cb, 0, sizeof(skb->cb));
13160
13161         if (WARN_ON(!rdev->cur_cmd_info)) {
13162                 kfree_skb(skb);
13163                 return -EINVAL;
13164         }
13165
13166         nla_nest_end(skb, data);
13167         genlmsg_end(skb, hdr);
13168         return genlmsg_reply(skb, rdev->cur_cmd_info);
13169 }
13170 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13171
13172 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13173 {
13174         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13175
13176         if (WARN_ON(!rdev->cur_cmd_info))
13177                 return 0;
13178
13179         return rdev->cur_cmd_info->snd_portid;
13180 }
13181 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13182
13183 static int nl80211_set_qos_map(struct sk_buff *skb,
13184                                struct genl_info *info)
13185 {
13186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13187         struct cfg80211_qos_map *qos_map = NULL;
13188         struct net_device *dev = info->user_ptr[1];
13189         u8 *pos, len, num_des, des_len, des;
13190         int ret;
13191
13192         if (!rdev->ops->set_qos_map)
13193                 return -EOPNOTSUPP;
13194
13195         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13196                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13197                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13198
13199                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13200                     len > IEEE80211_QOS_MAP_LEN_MAX)
13201                         return -EINVAL;
13202
13203                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13204                 if (!qos_map)
13205                         return -ENOMEM;
13206
13207                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13208                 if (num_des) {
13209                         des_len = num_des *
13210                                 sizeof(struct cfg80211_dscp_exception);
13211                         memcpy(qos_map->dscp_exception, pos, des_len);
13212                         qos_map->num_des = num_des;
13213                         for (des = 0; des < num_des; des++) {
13214                                 if (qos_map->dscp_exception[des].up > 7) {
13215                                         kfree(qos_map);
13216                                         return -EINVAL;
13217                                 }
13218                         }
13219                         pos += des_len;
13220                 }
13221                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13222         }
13223
13224         wdev_lock(dev->ieee80211_ptr);
13225         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13226         if (!ret)
13227                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13228         wdev_unlock(dev->ieee80211_ptr);
13229
13230         kfree(qos_map);
13231         return ret;
13232 }
13233
13234 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13235 {
13236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13237         struct net_device *dev = info->user_ptr[1];
13238         struct wireless_dev *wdev = dev->ieee80211_ptr;
13239         const u8 *peer;
13240         u8 tsid, up;
13241         u16 admitted_time = 0;
13242         int err;
13243
13244         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13245                 return -EOPNOTSUPP;
13246
13247         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13248             !info->attrs[NL80211_ATTR_USER_PRIO])
13249                 return -EINVAL;
13250
13251         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13252         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13253
13254         /* WMM uses TIDs 0-7 even for TSPEC */
13255         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13256                 /* TODO: handle 802.11 TSPEC/admission control
13257                  * need more attributes for that (e.g. BA session requirement);
13258                  * change the WMM adminssion test above to allow both then
13259                  */
13260                 return -EINVAL;
13261         }
13262
13263         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13264
13265         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13266                 admitted_time =
13267                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13268                 if (!admitted_time)
13269                         return -EINVAL;
13270         }
13271
13272         wdev_lock(wdev);
13273         switch (wdev->iftype) {
13274         case NL80211_IFTYPE_STATION:
13275         case NL80211_IFTYPE_P2P_CLIENT:
13276                 if (wdev->current_bss)
13277                         break;
13278                 err = -ENOTCONN;
13279                 goto out;
13280         default:
13281                 err = -EOPNOTSUPP;
13282                 goto out;
13283         }
13284
13285         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13286
13287  out:
13288         wdev_unlock(wdev);
13289         return err;
13290 }
13291
13292 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13293 {
13294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13295         struct net_device *dev = info->user_ptr[1];
13296         struct wireless_dev *wdev = dev->ieee80211_ptr;
13297         const u8 *peer;
13298         u8 tsid;
13299         int err;
13300
13301         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13302                 return -EINVAL;
13303
13304         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13305         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13306
13307         wdev_lock(wdev);
13308         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13309         wdev_unlock(wdev);
13310
13311         return err;
13312 }
13313
13314 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13315                                        struct genl_info *info)
13316 {
13317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13318         struct net_device *dev = info->user_ptr[1];
13319         struct wireless_dev *wdev = dev->ieee80211_ptr;
13320         struct cfg80211_chan_def chandef = {};
13321         const u8 *addr;
13322         u8 oper_class;
13323         int err;
13324
13325         if (!rdev->ops->tdls_channel_switch ||
13326             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13327                 return -EOPNOTSUPP;
13328
13329         switch (dev->ieee80211_ptr->iftype) {
13330         case NL80211_IFTYPE_STATION:
13331         case NL80211_IFTYPE_P2P_CLIENT:
13332                 break;
13333         default:
13334                 return -EOPNOTSUPP;
13335         }
13336
13337         if (!info->attrs[NL80211_ATTR_MAC] ||
13338             !info->attrs[NL80211_ATTR_OPER_CLASS])
13339                 return -EINVAL;
13340
13341         err = nl80211_parse_chandef(rdev, info, &chandef);
13342         if (err)
13343                 return err;
13344
13345         /*
13346          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13347          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13348          * specification is not defined for them.
13349          */
13350         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13351             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13352             chandef.width != NL80211_CHAN_WIDTH_20)
13353                 return -EINVAL;
13354
13355         /* we will be active on the TDLS link */
13356         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13357                                            wdev->iftype))
13358                 return -EINVAL;
13359
13360         /* don't allow switching to DFS channels */
13361         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13362                 return -EINVAL;
13363
13364         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13365         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13366
13367         wdev_lock(wdev);
13368         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13369         wdev_unlock(wdev);
13370
13371         return err;
13372 }
13373
13374 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13375                                               struct genl_info *info)
13376 {
13377         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13378         struct net_device *dev = info->user_ptr[1];
13379         struct wireless_dev *wdev = dev->ieee80211_ptr;
13380         const u8 *addr;
13381
13382         if (!rdev->ops->tdls_channel_switch ||
13383             !rdev->ops->tdls_cancel_channel_switch ||
13384             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13385                 return -EOPNOTSUPP;
13386
13387         switch (dev->ieee80211_ptr->iftype) {
13388         case NL80211_IFTYPE_STATION:
13389         case NL80211_IFTYPE_P2P_CLIENT:
13390                 break;
13391         default:
13392                 return -EOPNOTSUPP;
13393         }
13394
13395         if (!info->attrs[NL80211_ATTR_MAC])
13396                 return -EINVAL;
13397
13398         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13399
13400         wdev_lock(wdev);
13401         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13402         wdev_unlock(wdev);
13403
13404         return 0;
13405 }
13406
13407 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13408                                             struct genl_info *info)
13409 {
13410         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13411         struct net_device *dev = info->user_ptr[1];
13412         struct wireless_dev *wdev = dev->ieee80211_ptr;
13413         const struct nlattr *nla;
13414         bool enabled;
13415
13416         if (!rdev->ops->set_multicast_to_unicast)
13417                 return -EOPNOTSUPP;
13418
13419         if (wdev->iftype != NL80211_IFTYPE_AP &&
13420             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13421                 return -EOPNOTSUPP;
13422
13423         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13424         enabled = nla_get_flag(nla);
13425
13426         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13427 }
13428
13429 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13430 {
13431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13432         struct net_device *dev = info->user_ptr[1];
13433         struct wireless_dev *wdev = dev->ieee80211_ptr;
13434         struct cfg80211_pmk_conf pmk_conf = {};
13435         int ret;
13436
13437         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13438             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13439                 return -EOPNOTSUPP;
13440
13441         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13442                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13443                 return -EOPNOTSUPP;
13444
13445         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13446                 return -EINVAL;
13447
13448         wdev_lock(wdev);
13449         if (!wdev->current_bss) {
13450                 ret = -ENOTCONN;
13451                 goto out;
13452         }
13453
13454         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13455         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13456                 ret = -EINVAL;
13457                 goto out;
13458         }
13459
13460         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13461         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13462         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13463             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13464                 ret = -EINVAL;
13465                 goto out;
13466         }
13467
13468         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13469                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13470
13471                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13472                         ret = -EINVAL;
13473                         goto out;
13474                 }
13475
13476                 pmk_conf.pmk_r0_name =
13477                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13478         }
13479
13480         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13481 out:
13482         wdev_unlock(wdev);
13483         return ret;
13484 }
13485
13486 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13487 {
13488         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13489         struct net_device *dev = info->user_ptr[1];
13490         struct wireless_dev *wdev = dev->ieee80211_ptr;
13491         const u8 *aa;
13492         int ret;
13493
13494         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13495             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13496                 return -EOPNOTSUPP;
13497
13498         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13499                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13500                 return -EOPNOTSUPP;
13501
13502         if (!info->attrs[NL80211_ATTR_MAC])
13503                 return -EINVAL;
13504
13505         wdev_lock(wdev);
13506         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13507         ret = rdev_del_pmk(rdev, dev, aa);
13508         wdev_unlock(wdev);
13509
13510         return ret;
13511 }
13512
13513 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13514 {
13515         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13516         struct net_device *dev = info->user_ptr[1];
13517         struct cfg80211_external_auth_params params;
13518
13519         if (!rdev->ops->external_auth)
13520                 return -EOPNOTSUPP;
13521
13522         if (!info->attrs[NL80211_ATTR_SSID] &&
13523             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13524             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13525                 return -EINVAL;
13526
13527         if (!info->attrs[NL80211_ATTR_BSSID])
13528                 return -EINVAL;
13529
13530         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13531                 return -EINVAL;
13532
13533         memset(&params, 0, sizeof(params));
13534
13535         if (info->attrs[NL80211_ATTR_SSID]) {
13536                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13537                 if (params.ssid.ssid_len == 0 ||
13538                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13539                         return -EINVAL;
13540                 memcpy(params.ssid.ssid,
13541                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13542                        params.ssid.ssid_len);
13543         }
13544
13545         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13546                ETH_ALEN);
13547
13548         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13549
13550         if (info->attrs[NL80211_ATTR_PMKID])
13551                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13552
13553         return rdev_external_auth(rdev, dev, &params);
13554 }
13555
13556 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13557 {
13558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13559         struct net_device *dev = info->user_ptr[1];
13560         struct wireless_dev *wdev = dev->ieee80211_ptr;
13561         const u8 *buf;
13562         size_t len;
13563         u8 *dest;
13564         u16 proto;
13565         bool noencrypt;
13566         int err;
13567
13568         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13569                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13570                 return -EOPNOTSUPP;
13571
13572         if (!rdev->ops->tx_control_port)
13573                 return -EOPNOTSUPP;
13574
13575         if (!info->attrs[NL80211_ATTR_FRAME] ||
13576             !info->attrs[NL80211_ATTR_MAC] ||
13577             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13578                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13579                 return -EINVAL;
13580         }
13581
13582         wdev_lock(wdev);
13583
13584         switch (wdev->iftype) {
13585         case NL80211_IFTYPE_AP:
13586         case NL80211_IFTYPE_P2P_GO:
13587         case NL80211_IFTYPE_MESH_POINT:
13588                 break;
13589         case NL80211_IFTYPE_ADHOC:
13590         case NL80211_IFTYPE_STATION:
13591         case NL80211_IFTYPE_P2P_CLIENT:
13592                 if (wdev->current_bss)
13593                         break;
13594                 err = -ENOTCONN;
13595                 goto out;
13596         default:
13597                 err = -EOPNOTSUPP;
13598                 goto out;
13599         }
13600
13601         wdev_unlock(wdev);
13602
13603         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13604         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13605         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13606         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13607         noencrypt =
13608                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13609
13610         return rdev_tx_control_port(rdev, dev, buf, len,
13611                                     dest, cpu_to_be16(proto), noencrypt);
13612
13613  out:
13614         wdev_unlock(wdev);
13615         return err;
13616 }
13617
13618 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13619                                            struct genl_info *info)
13620 {
13621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13622         struct net_device *dev = info->user_ptr[1];
13623         struct wireless_dev *wdev = dev->ieee80211_ptr;
13624         struct cfg80211_ftm_responder_stats ftm_stats = {};
13625         struct sk_buff *msg;
13626         void *hdr;
13627         struct nlattr *ftm_stats_attr;
13628         int err;
13629
13630         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13631                 return -EOPNOTSUPP;
13632
13633         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13634         if (err)
13635                 return err;
13636
13637         if (!ftm_stats.filled)
13638                 return -ENODATA;
13639
13640         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13641         if (!msg)
13642                 return -ENOMEM;
13643
13644         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13645                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13646         if (!hdr)
13647                 return -ENOBUFS;
13648
13649         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13650                 goto nla_put_failure;
13651
13652         ftm_stats_attr = nla_nest_start_noflag(msg,
13653                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13654         if (!ftm_stats_attr)
13655                 goto nla_put_failure;
13656
13657 #define SET_FTM(field, name, type)                                       \
13658         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13659             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13660                              ftm_stats.field))                           \
13661                 goto nla_put_failure; } while (0)
13662 #define SET_FTM_U64(field, name)                                         \
13663         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13664             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13665                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13666                 goto nla_put_failure; } while (0)
13667
13668         SET_FTM(success_num, SUCCESS_NUM, u32);
13669         SET_FTM(partial_num, PARTIAL_NUM, u32);
13670         SET_FTM(failed_num, FAILED_NUM, u32);
13671         SET_FTM(asap_num, ASAP_NUM, u32);
13672         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13673         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13674         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13675         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13676         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13677 #undef SET_FTM
13678
13679         nla_nest_end(msg, ftm_stats_attr);
13680
13681         genlmsg_end(msg, hdr);
13682         return genlmsg_reply(msg, info);
13683
13684 nla_put_failure:
13685         nlmsg_free(msg);
13686         return -ENOBUFS;
13687 }
13688
13689 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13690 {
13691         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13692         struct cfg80211_update_owe_info owe_info;
13693         struct net_device *dev = info->user_ptr[1];
13694
13695         if (!rdev->ops->update_owe_info)
13696                 return -EOPNOTSUPP;
13697
13698         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13699             !info->attrs[NL80211_ATTR_MAC])
13700                 return -EINVAL;
13701
13702         memset(&owe_info, 0, sizeof(owe_info));
13703         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13704         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13705
13706         if (info->attrs[NL80211_ATTR_IE]) {
13707                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13708                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13709         }
13710
13711         return rdev_update_owe_info(rdev, dev, &owe_info);
13712 }
13713
13714 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13715 {
13716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13717         struct net_device *dev = info->user_ptr[1];
13718         struct wireless_dev *wdev = dev->ieee80211_ptr;
13719         struct station_info sinfo = {};
13720         const u8 *buf;
13721         size_t len;
13722         u8 *dest;
13723         int err;
13724
13725         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13726                 return -EOPNOTSUPP;
13727
13728         if (!info->attrs[NL80211_ATTR_MAC] ||
13729             !info->attrs[NL80211_ATTR_FRAME]) {
13730                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13731                 return -EINVAL;
13732         }
13733
13734         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13735                 return -EOPNOTSUPP;
13736
13737         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13738         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13739         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13740
13741         if (len < sizeof(struct ethhdr))
13742                 return -EINVAL;
13743
13744         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13745             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13746                 return -EINVAL;
13747
13748         err = rdev_get_station(rdev, dev, dest, &sinfo);
13749         if (err)
13750                 return err;
13751
13752         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13753 }
13754
13755 #define NL80211_FLAG_NEED_WIPHY         0x01
13756 #define NL80211_FLAG_NEED_NETDEV        0x02
13757 #define NL80211_FLAG_NEED_RTNL          0x04
13758 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13759 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13760                                          NL80211_FLAG_CHECK_NETDEV_UP)
13761 #define NL80211_FLAG_NEED_WDEV          0x10
13762 /* If a netdev is associated, it must be UP, P2P must be started */
13763 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13764                                          NL80211_FLAG_CHECK_NETDEV_UP)
13765 #define NL80211_FLAG_CLEAR_SKB          0x20
13766
13767 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13768                             struct genl_info *info)
13769 {
13770         struct cfg80211_registered_device *rdev;
13771         struct wireless_dev *wdev;
13772         struct net_device *dev;
13773         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13774
13775         if (rtnl)
13776                 rtnl_lock();
13777
13778         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13779                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13780                 if (IS_ERR(rdev)) {
13781                         if (rtnl)
13782                                 rtnl_unlock();
13783                         return PTR_ERR(rdev);
13784                 }
13785                 info->user_ptr[0] = rdev;
13786         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13787                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13788                 ASSERT_RTNL();
13789
13790                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13791                                                   info->attrs);
13792                 if (IS_ERR(wdev)) {
13793                         if (rtnl)
13794                                 rtnl_unlock();
13795                         return PTR_ERR(wdev);
13796                 }
13797
13798                 dev = wdev->netdev;
13799                 rdev = wiphy_to_rdev(wdev->wiphy);
13800
13801                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13802                         if (!dev) {
13803                                 if (rtnl)
13804                                         rtnl_unlock();
13805                                 return -EINVAL;
13806                         }
13807
13808                         info->user_ptr[1] = dev;
13809                 } else {
13810                         info->user_ptr[1] = wdev;
13811                 }
13812
13813                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13814                     !wdev_running(wdev)) {
13815                         if (rtnl)
13816                                 rtnl_unlock();
13817                         return -ENETDOWN;
13818                 }
13819
13820                 if (dev)
13821                         dev_hold(dev);
13822
13823                 info->user_ptr[0] = rdev;
13824         }
13825
13826         return 0;
13827 }
13828
13829 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13830                               struct genl_info *info)
13831 {
13832         if (info->user_ptr[1]) {
13833                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13834                         struct wireless_dev *wdev = info->user_ptr[1];
13835
13836                         if (wdev->netdev)
13837                                 dev_put(wdev->netdev);
13838                 } else {
13839                         dev_put(info->user_ptr[1]);
13840                 }
13841         }
13842
13843         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13844                 rtnl_unlock();
13845
13846         /* If needed, clear the netlink message payload from the SKB
13847          * as it might contain key data that shouldn't stick around on
13848          * the heap after the SKB is freed. The netlink message header
13849          * is still needed for further processing, so leave it intact.
13850          */
13851         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13852                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13853
13854                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13855         }
13856 }
13857
13858 static const struct genl_ops nl80211_ops[] = {
13859         {
13860                 .cmd = NL80211_CMD_GET_WIPHY,
13861                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13862                 .doit = nl80211_get_wiphy,
13863                 .dumpit = nl80211_dump_wiphy,
13864                 .done = nl80211_dump_wiphy_done,
13865                 /* can be retrieved by unprivileged users */
13866                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13867                                   NL80211_FLAG_NEED_RTNL,
13868         },
13869         {
13870                 .cmd = NL80211_CMD_SET_WIPHY,
13871                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13872                 .doit = nl80211_set_wiphy,
13873                 .flags = GENL_UNS_ADMIN_PERM,
13874                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13875         },
13876         {
13877                 .cmd = NL80211_CMD_GET_INTERFACE,
13878                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13879                 .doit = nl80211_get_interface,
13880                 .dumpit = nl80211_dump_interface,
13881                 /* can be retrieved by unprivileged users */
13882                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13883                                   NL80211_FLAG_NEED_RTNL,
13884         },
13885         {
13886                 .cmd = NL80211_CMD_SET_INTERFACE,
13887                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13888                 .doit = nl80211_set_interface,
13889                 .flags = GENL_UNS_ADMIN_PERM,
13890                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13891                                   NL80211_FLAG_NEED_RTNL,
13892         },
13893         {
13894                 .cmd = NL80211_CMD_NEW_INTERFACE,
13895                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13896                 .doit = nl80211_new_interface,
13897                 .flags = GENL_UNS_ADMIN_PERM,
13898                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13899                                   NL80211_FLAG_NEED_RTNL,
13900         },
13901         {
13902                 .cmd = NL80211_CMD_DEL_INTERFACE,
13903                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13904                 .doit = nl80211_del_interface,
13905                 .flags = GENL_UNS_ADMIN_PERM,
13906                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13907                                   NL80211_FLAG_NEED_RTNL,
13908         },
13909         {
13910                 .cmd = NL80211_CMD_GET_KEY,
13911                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13912                 .doit = nl80211_get_key,
13913                 .flags = GENL_UNS_ADMIN_PERM,
13914                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13915                                   NL80211_FLAG_NEED_RTNL,
13916         },
13917         {
13918                 .cmd = NL80211_CMD_SET_KEY,
13919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13920                 .doit = nl80211_set_key,
13921                 .flags = GENL_UNS_ADMIN_PERM,
13922                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13923                                   NL80211_FLAG_NEED_RTNL |
13924                                   NL80211_FLAG_CLEAR_SKB,
13925         },
13926         {
13927                 .cmd = NL80211_CMD_NEW_KEY,
13928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13929                 .doit = nl80211_new_key,
13930                 .flags = GENL_UNS_ADMIN_PERM,
13931                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13932                                   NL80211_FLAG_NEED_RTNL |
13933                                   NL80211_FLAG_CLEAR_SKB,
13934         },
13935         {
13936                 .cmd = NL80211_CMD_DEL_KEY,
13937                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13938                 .doit = nl80211_del_key,
13939                 .flags = GENL_UNS_ADMIN_PERM,
13940                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13941                                   NL80211_FLAG_NEED_RTNL,
13942         },
13943         {
13944                 .cmd = NL80211_CMD_SET_BEACON,
13945                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13946                 .flags = GENL_UNS_ADMIN_PERM,
13947                 .doit = nl80211_set_beacon,
13948                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13949                                   NL80211_FLAG_NEED_RTNL,
13950         },
13951         {
13952                 .cmd = NL80211_CMD_START_AP,
13953                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13954                 .flags = GENL_UNS_ADMIN_PERM,
13955                 .doit = nl80211_start_ap,
13956                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13957                                   NL80211_FLAG_NEED_RTNL,
13958         },
13959         {
13960                 .cmd = NL80211_CMD_STOP_AP,
13961                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13962                 .flags = GENL_UNS_ADMIN_PERM,
13963                 .doit = nl80211_stop_ap,
13964                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13965                                   NL80211_FLAG_NEED_RTNL,
13966         },
13967         {
13968                 .cmd = NL80211_CMD_GET_STATION,
13969                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13970                 .doit = nl80211_get_station,
13971                 .dumpit = nl80211_dump_station,
13972                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13973                                   NL80211_FLAG_NEED_RTNL,
13974         },
13975         {
13976                 .cmd = NL80211_CMD_SET_STATION,
13977                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13978                 .doit = nl80211_set_station,
13979                 .flags = GENL_UNS_ADMIN_PERM,
13980                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13981                                   NL80211_FLAG_NEED_RTNL,
13982         },
13983         {
13984                 .cmd = NL80211_CMD_NEW_STATION,
13985                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13986                 .doit = nl80211_new_station,
13987                 .flags = GENL_UNS_ADMIN_PERM,
13988                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13989                                   NL80211_FLAG_NEED_RTNL,
13990         },
13991         {
13992                 .cmd = NL80211_CMD_DEL_STATION,
13993                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13994                 .doit = nl80211_del_station,
13995                 .flags = GENL_UNS_ADMIN_PERM,
13996                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13997                                   NL80211_FLAG_NEED_RTNL,
13998         },
13999         {
14000                 .cmd = NL80211_CMD_GET_MPATH,
14001                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14002                 .doit = nl80211_get_mpath,
14003                 .dumpit = nl80211_dump_mpath,
14004                 .flags = GENL_UNS_ADMIN_PERM,
14005                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14006                                   NL80211_FLAG_NEED_RTNL,
14007         },
14008         {
14009                 .cmd = NL80211_CMD_GET_MPP,
14010                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14011                 .doit = nl80211_get_mpp,
14012                 .dumpit = nl80211_dump_mpp,
14013                 .flags = GENL_UNS_ADMIN_PERM,
14014                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14015                                   NL80211_FLAG_NEED_RTNL,
14016         },
14017         {
14018                 .cmd = NL80211_CMD_SET_MPATH,
14019                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14020                 .doit = nl80211_set_mpath,
14021                 .flags = GENL_UNS_ADMIN_PERM,
14022                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14023                                   NL80211_FLAG_NEED_RTNL,
14024         },
14025         {
14026                 .cmd = NL80211_CMD_NEW_MPATH,
14027                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14028                 .doit = nl80211_new_mpath,
14029                 .flags = GENL_UNS_ADMIN_PERM,
14030                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14031                                   NL80211_FLAG_NEED_RTNL,
14032         },
14033         {
14034                 .cmd = NL80211_CMD_DEL_MPATH,
14035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14036                 .doit = nl80211_del_mpath,
14037                 .flags = GENL_UNS_ADMIN_PERM,
14038                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14039                                   NL80211_FLAG_NEED_RTNL,
14040         },
14041         {
14042                 .cmd = NL80211_CMD_SET_BSS,
14043                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14044                 .doit = nl80211_set_bss,
14045                 .flags = GENL_UNS_ADMIN_PERM,
14046                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14047                                   NL80211_FLAG_NEED_RTNL,
14048         },
14049         {
14050                 .cmd = NL80211_CMD_GET_REG,
14051                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14052                 .doit = nl80211_get_reg_do,
14053                 .dumpit = nl80211_get_reg_dump,
14054                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14055                 /* can be retrieved by unprivileged users */
14056         },
14057 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14058         {
14059                 .cmd = NL80211_CMD_SET_REG,
14060                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14061                 .doit = nl80211_set_reg,
14062                 .flags = GENL_ADMIN_PERM,
14063                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14064         },
14065 #endif
14066         {
14067                 .cmd = NL80211_CMD_REQ_SET_REG,
14068                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14069                 .doit = nl80211_req_set_reg,
14070                 .flags = GENL_ADMIN_PERM,
14071         },
14072         {
14073                 .cmd = NL80211_CMD_RELOAD_REGDB,
14074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14075                 .doit = nl80211_reload_regdb,
14076                 .flags = GENL_ADMIN_PERM,
14077         },
14078         {
14079                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14080                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14081                 .doit = nl80211_get_mesh_config,
14082                 /* can be retrieved by unprivileged users */
14083                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14084                                   NL80211_FLAG_NEED_RTNL,
14085         },
14086         {
14087                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14089                 .doit = nl80211_update_mesh_config,
14090                 .flags = GENL_UNS_ADMIN_PERM,
14091                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14092                                   NL80211_FLAG_NEED_RTNL,
14093         },
14094         {
14095                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14096                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14097                 .doit = nl80211_trigger_scan,
14098                 .flags = GENL_UNS_ADMIN_PERM,
14099                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14100                                   NL80211_FLAG_NEED_RTNL,
14101         },
14102         {
14103                 .cmd = NL80211_CMD_ABORT_SCAN,
14104                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14105                 .doit = nl80211_abort_scan,
14106                 .flags = GENL_UNS_ADMIN_PERM,
14107                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14108                                   NL80211_FLAG_NEED_RTNL,
14109         },
14110         {
14111                 .cmd = NL80211_CMD_GET_SCAN,
14112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14113                 .dumpit = nl80211_dump_scan,
14114         },
14115         {
14116                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14117                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14118                 .doit = nl80211_start_sched_scan,
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_STOP_SCHED_SCAN,
14125                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14126                 .doit = nl80211_stop_sched_scan,
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_AUTHENTICATE,
14133                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14134                 .doit = nl80211_authenticate,
14135                 .flags = GENL_UNS_ADMIN_PERM,
14136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14137                                   NL80211_FLAG_NEED_RTNL |
14138                                   NL80211_FLAG_CLEAR_SKB,
14139         },
14140         {
14141                 .cmd = NL80211_CMD_ASSOCIATE,
14142                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14143                 .doit = nl80211_associate,
14144                 .flags = GENL_UNS_ADMIN_PERM,
14145                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14146                                   NL80211_FLAG_NEED_RTNL |
14147                                   NL80211_FLAG_CLEAR_SKB,
14148         },
14149         {
14150                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14151                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14152                 .doit = nl80211_deauthenticate,
14153                 .flags = GENL_UNS_ADMIN_PERM,
14154                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14155                                   NL80211_FLAG_NEED_RTNL,
14156         },
14157         {
14158                 .cmd = NL80211_CMD_DISASSOCIATE,
14159                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14160                 .doit = nl80211_disassociate,
14161                 .flags = GENL_UNS_ADMIN_PERM,
14162                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14163                                   NL80211_FLAG_NEED_RTNL,
14164         },
14165         {
14166                 .cmd = NL80211_CMD_JOIN_IBSS,
14167                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14168                 .doit = nl80211_join_ibss,
14169                 .flags = GENL_UNS_ADMIN_PERM,
14170                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14171                                   NL80211_FLAG_NEED_RTNL,
14172         },
14173         {
14174                 .cmd = NL80211_CMD_LEAVE_IBSS,
14175                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14176                 .doit = nl80211_leave_ibss,
14177                 .flags = GENL_UNS_ADMIN_PERM,
14178                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14179                                   NL80211_FLAG_NEED_RTNL,
14180         },
14181 #ifdef CONFIG_NL80211_TESTMODE
14182         {
14183                 .cmd = NL80211_CMD_TESTMODE,
14184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14185                 .doit = nl80211_testmode_do,
14186                 .dumpit = nl80211_testmode_dump,
14187                 .flags = GENL_UNS_ADMIN_PERM,
14188                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14189                                   NL80211_FLAG_NEED_RTNL,
14190         },
14191 #endif
14192         {
14193                 .cmd = NL80211_CMD_CONNECT,
14194                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14195                 .doit = nl80211_connect,
14196                 .flags = GENL_UNS_ADMIN_PERM,
14197                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14198                                   NL80211_FLAG_NEED_RTNL |
14199                                   NL80211_FLAG_CLEAR_SKB,
14200         },
14201         {
14202                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14203                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14204                 .doit = nl80211_update_connect_params,
14205                 .flags = GENL_ADMIN_PERM,
14206                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14207                                   NL80211_FLAG_NEED_RTNL |
14208                                   NL80211_FLAG_CLEAR_SKB,
14209         },
14210         {
14211                 .cmd = NL80211_CMD_DISCONNECT,
14212                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14213                 .doit = nl80211_disconnect,
14214                 .flags = GENL_UNS_ADMIN_PERM,
14215                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14216                                   NL80211_FLAG_NEED_RTNL,
14217         },
14218         {
14219                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14220                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14221                 .doit = nl80211_wiphy_netns,
14222                 .flags = GENL_UNS_ADMIN_PERM,
14223                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14224                                   NL80211_FLAG_NEED_RTNL,
14225         },
14226         {
14227                 .cmd = NL80211_CMD_GET_SURVEY,
14228                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14229                 .dumpit = nl80211_dump_survey,
14230         },
14231         {
14232                 .cmd = NL80211_CMD_SET_PMKSA,
14233                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14234                 .doit = nl80211_setdel_pmksa,
14235                 .flags = GENL_UNS_ADMIN_PERM,
14236                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14237                                   NL80211_FLAG_NEED_RTNL |
14238                                   NL80211_FLAG_CLEAR_SKB,
14239         },
14240         {
14241                 .cmd = NL80211_CMD_DEL_PMKSA,
14242                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14243                 .doit = nl80211_setdel_pmksa,
14244                 .flags = GENL_UNS_ADMIN_PERM,
14245                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14246                                   NL80211_FLAG_NEED_RTNL,
14247         },
14248         {
14249                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14250                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14251                 .doit = nl80211_flush_pmksa,
14252                 .flags = GENL_UNS_ADMIN_PERM,
14253                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14254                                   NL80211_FLAG_NEED_RTNL,
14255         },
14256         {
14257                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14258                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14259                 .doit = nl80211_remain_on_channel,
14260                 .flags = GENL_UNS_ADMIN_PERM,
14261                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14262                                   NL80211_FLAG_NEED_RTNL,
14263         },
14264         {
14265                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14266                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14267                 .doit = nl80211_cancel_remain_on_channel,
14268                 .flags = GENL_UNS_ADMIN_PERM,
14269                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14270                                   NL80211_FLAG_NEED_RTNL,
14271         },
14272         {
14273                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14274                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14275                 .doit = nl80211_set_tx_bitrate_mask,
14276                 .flags = GENL_UNS_ADMIN_PERM,
14277                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14278                                   NL80211_FLAG_NEED_RTNL,
14279         },
14280         {
14281                 .cmd = NL80211_CMD_REGISTER_FRAME,
14282                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14283                 .doit = nl80211_register_mgmt,
14284                 .flags = GENL_UNS_ADMIN_PERM,
14285                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14286                                   NL80211_FLAG_NEED_RTNL,
14287         },
14288         {
14289                 .cmd = NL80211_CMD_FRAME,
14290                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14291                 .doit = nl80211_tx_mgmt,
14292                 .flags = GENL_UNS_ADMIN_PERM,
14293                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14294                                   NL80211_FLAG_NEED_RTNL,
14295         },
14296         {
14297                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14298                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14299                 .doit = nl80211_tx_mgmt_cancel_wait,
14300                 .flags = GENL_UNS_ADMIN_PERM,
14301                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14302                                   NL80211_FLAG_NEED_RTNL,
14303         },
14304         {
14305                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14306                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14307                 .doit = nl80211_set_power_save,
14308                 .flags = GENL_UNS_ADMIN_PERM,
14309                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14310                                   NL80211_FLAG_NEED_RTNL,
14311         },
14312         {
14313                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14314                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14315                 .doit = nl80211_get_power_save,
14316                 /* can be retrieved by unprivileged users */
14317                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14318                                   NL80211_FLAG_NEED_RTNL,
14319         },
14320         {
14321                 .cmd = NL80211_CMD_SET_CQM,
14322                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14323                 .doit = nl80211_set_cqm,
14324                 .flags = GENL_UNS_ADMIN_PERM,
14325                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14326                                   NL80211_FLAG_NEED_RTNL,
14327         },
14328         {
14329                 .cmd = NL80211_CMD_SET_CHANNEL,
14330                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14331                 .doit = nl80211_set_channel,
14332                 .flags = GENL_UNS_ADMIN_PERM,
14333                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14334                                   NL80211_FLAG_NEED_RTNL,
14335         },
14336         {
14337                 .cmd = NL80211_CMD_SET_WDS_PEER,
14338                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14339                 .doit = nl80211_set_wds_peer,
14340                 .flags = GENL_UNS_ADMIN_PERM,
14341                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14342                                   NL80211_FLAG_NEED_RTNL,
14343         },
14344         {
14345                 .cmd = NL80211_CMD_JOIN_MESH,
14346                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14347                 .doit = nl80211_join_mesh,
14348                 .flags = GENL_UNS_ADMIN_PERM,
14349                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14350                                   NL80211_FLAG_NEED_RTNL,
14351         },
14352         {
14353                 .cmd = NL80211_CMD_LEAVE_MESH,
14354                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14355                 .doit = nl80211_leave_mesh,
14356                 .flags = GENL_UNS_ADMIN_PERM,
14357                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14358                                   NL80211_FLAG_NEED_RTNL,
14359         },
14360         {
14361                 .cmd = NL80211_CMD_JOIN_OCB,
14362                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14363                 .doit = nl80211_join_ocb,
14364                 .flags = GENL_UNS_ADMIN_PERM,
14365                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14366                                   NL80211_FLAG_NEED_RTNL,
14367         },
14368         {
14369                 .cmd = NL80211_CMD_LEAVE_OCB,
14370                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14371                 .doit = nl80211_leave_ocb,
14372                 .flags = GENL_UNS_ADMIN_PERM,
14373                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14374                                   NL80211_FLAG_NEED_RTNL,
14375         },
14376 #ifdef CONFIG_PM
14377         {
14378                 .cmd = NL80211_CMD_GET_WOWLAN,
14379                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14380                 .doit = nl80211_get_wowlan,
14381                 /* can be retrieved by unprivileged users */
14382                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14383                                   NL80211_FLAG_NEED_RTNL,
14384         },
14385         {
14386                 .cmd = NL80211_CMD_SET_WOWLAN,
14387                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14388                 .doit = nl80211_set_wowlan,
14389                 .flags = GENL_UNS_ADMIN_PERM,
14390                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14391                                   NL80211_FLAG_NEED_RTNL,
14392         },
14393 #endif
14394         {
14395                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14396                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14397                 .doit = nl80211_set_rekey_data,
14398                 .flags = GENL_UNS_ADMIN_PERM,
14399                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14400                                   NL80211_FLAG_NEED_RTNL |
14401                                   NL80211_FLAG_CLEAR_SKB,
14402         },
14403         {
14404                 .cmd = NL80211_CMD_TDLS_MGMT,
14405                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14406                 .doit = nl80211_tdls_mgmt,
14407                 .flags = GENL_UNS_ADMIN_PERM,
14408                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14409                                   NL80211_FLAG_NEED_RTNL,
14410         },
14411         {
14412                 .cmd = NL80211_CMD_TDLS_OPER,
14413                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14414                 .doit = nl80211_tdls_oper,
14415                 .flags = GENL_UNS_ADMIN_PERM,
14416                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14417                                   NL80211_FLAG_NEED_RTNL,
14418         },
14419         {
14420                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14421                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14422                 .doit = nl80211_register_unexpected_frame,
14423                 .flags = GENL_UNS_ADMIN_PERM,
14424                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14425                                   NL80211_FLAG_NEED_RTNL,
14426         },
14427         {
14428                 .cmd = NL80211_CMD_PROBE_CLIENT,
14429                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14430                 .doit = nl80211_probe_client,
14431                 .flags = GENL_UNS_ADMIN_PERM,
14432                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14433                                   NL80211_FLAG_NEED_RTNL,
14434         },
14435         {
14436                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14437                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14438                 .doit = nl80211_register_beacons,
14439                 .flags = GENL_UNS_ADMIN_PERM,
14440                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14441                                   NL80211_FLAG_NEED_RTNL,
14442         },
14443         {
14444                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14445                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14446                 .doit = nl80211_set_noack_map,
14447                 .flags = GENL_UNS_ADMIN_PERM,
14448                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14449                                   NL80211_FLAG_NEED_RTNL,
14450         },
14451         {
14452                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14453                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14454                 .doit = nl80211_start_p2p_device,
14455                 .flags = GENL_UNS_ADMIN_PERM,
14456                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14457                                   NL80211_FLAG_NEED_RTNL,
14458         },
14459         {
14460                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14461                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14462                 .doit = nl80211_stop_p2p_device,
14463                 .flags = GENL_UNS_ADMIN_PERM,
14464                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14465                                   NL80211_FLAG_NEED_RTNL,
14466         },
14467         {
14468                 .cmd = NL80211_CMD_START_NAN,
14469                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14470                 .doit = nl80211_start_nan,
14471                 .flags = GENL_ADMIN_PERM,
14472                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14473                                   NL80211_FLAG_NEED_RTNL,
14474         },
14475         {
14476                 .cmd = NL80211_CMD_STOP_NAN,
14477                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14478                 .doit = nl80211_stop_nan,
14479                 .flags = GENL_ADMIN_PERM,
14480                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14481                                   NL80211_FLAG_NEED_RTNL,
14482         },
14483         {
14484                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14485                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14486                 .doit = nl80211_nan_add_func,
14487                 .flags = GENL_ADMIN_PERM,
14488                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14489                                   NL80211_FLAG_NEED_RTNL,
14490         },
14491         {
14492                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14493                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14494                 .doit = nl80211_nan_del_func,
14495                 .flags = GENL_ADMIN_PERM,
14496                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14497                                   NL80211_FLAG_NEED_RTNL,
14498         },
14499         {
14500                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14501                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14502                 .doit = nl80211_nan_change_config,
14503                 .flags = GENL_ADMIN_PERM,
14504                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14505                                   NL80211_FLAG_NEED_RTNL,
14506         },
14507         {
14508                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14509                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14510                 .doit = nl80211_set_mcast_rate,
14511                 .flags = GENL_UNS_ADMIN_PERM,
14512                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14513                                   NL80211_FLAG_NEED_RTNL,
14514         },
14515         {
14516                 .cmd = NL80211_CMD_SET_MAC_ACL,
14517                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14518                 .doit = nl80211_set_mac_acl,
14519                 .flags = GENL_UNS_ADMIN_PERM,
14520                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14521                                   NL80211_FLAG_NEED_RTNL,
14522         },
14523         {
14524                 .cmd = NL80211_CMD_RADAR_DETECT,
14525                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14526                 .doit = nl80211_start_radar_detection,
14527                 .flags = GENL_UNS_ADMIN_PERM,
14528                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14529                                   NL80211_FLAG_NEED_RTNL,
14530         },
14531         {
14532                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14533                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14534                 .doit = nl80211_get_protocol_features,
14535         },
14536         {
14537                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14538                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14539                 .doit = nl80211_update_ft_ies,
14540                 .flags = GENL_UNS_ADMIN_PERM,
14541                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14542                                   NL80211_FLAG_NEED_RTNL,
14543         },
14544         {
14545                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14546                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14547                 .doit = nl80211_crit_protocol_start,
14548                 .flags = GENL_UNS_ADMIN_PERM,
14549                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14550                                   NL80211_FLAG_NEED_RTNL,
14551         },
14552         {
14553                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14554                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14555                 .doit = nl80211_crit_protocol_stop,
14556                 .flags = GENL_UNS_ADMIN_PERM,
14557                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14558                                   NL80211_FLAG_NEED_RTNL,
14559         },
14560         {
14561                 .cmd = NL80211_CMD_GET_COALESCE,
14562                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14563                 .doit = nl80211_get_coalesce,
14564                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14565                                   NL80211_FLAG_NEED_RTNL,
14566         },
14567         {
14568                 .cmd = NL80211_CMD_SET_COALESCE,
14569                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14570                 .doit = nl80211_set_coalesce,
14571                 .flags = GENL_UNS_ADMIN_PERM,
14572                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14573                                   NL80211_FLAG_NEED_RTNL,
14574         },
14575         {
14576                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14577                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14578                 .doit = nl80211_channel_switch,
14579                 .flags = GENL_UNS_ADMIN_PERM,
14580                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14581                                   NL80211_FLAG_NEED_RTNL,
14582         },
14583         {
14584                 .cmd = NL80211_CMD_VENDOR,
14585                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14586                 .doit = nl80211_vendor_cmd,
14587                 .dumpit = nl80211_vendor_cmd_dump,
14588                 .flags = GENL_UNS_ADMIN_PERM,
14589                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14590                                   NL80211_FLAG_NEED_RTNL |
14591                                   NL80211_FLAG_CLEAR_SKB,
14592         },
14593         {
14594                 .cmd = NL80211_CMD_SET_QOS_MAP,
14595                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14596                 .doit = nl80211_set_qos_map,
14597                 .flags = GENL_UNS_ADMIN_PERM,
14598                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14599                                   NL80211_FLAG_NEED_RTNL,
14600         },
14601         {
14602                 .cmd = NL80211_CMD_ADD_TX_TS,
14603                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14604                 .doit = nl80211_add_tx_ts,
14605                 .flags = GENL_UNS_ADMIN_PERM,
14606                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14607                                   NL80211_FLAG_NEED_RTNL,
14608         },
14609         {
14610                 .cmd = NL80211_CMD_DEL_TX_TS,
14611                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14612                 .doit = nl80211_del_tx_ts,
14613                 .flags = GENL_UNS_ADMIN_PERM,
14614                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14615                                   NL80211_FLAG_NEED_RTNL,
14616         },
14617         {
14618                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14619                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14620                 .doit = nl80211_tdls_channel_switch,
14621                 .flags = GENL_UNS_ADMIN_PERM,
14622                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14623                                   NL80211_FLAG_NEED_RTNL,
14624         },
14625         {
14626                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14627                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14628                 .doit = nl80211_tdls_cancel_channel_switch,
14629                 .flags = GENL_UNS_ADMIN_PERM,
14630                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14631                                   NL80211_FLAG_NEED_RTNL,
14632         },
14633         {
14634                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14636                 .doit = nl80211_set_multicast_to_unicast,
14637                 .flags = GENL_UNS_ADMIN_PERM,
14638                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14639                                   NL80211_FLAG_NEED_RTNL,
14640         },
14641         {
14642                 .cmd = NL80211_CMD_SET_PMK,
14643                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14644                 .doit = nl80211_set_pmk,
14645                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14646                                   NL80211_FLAG_NEED_RTNL |
14647                                   NL80211_FLAG_CLEAR_SKB,
14648         },
14649         {
14650                 .cmd = NL80211_CMD_DEL_PMK,
14651                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14652                 .doit = nl80211_del_pmk,
14653                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14654                                   NL80211_FLAG_NEED_RTNL,
14655         },
14656         {
14657                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14658                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14659                 .doit = nl80211_external_auth,
14660                 .flags = GENL_ADMIN_PERM,
14661                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14662                                   NL80211_FLAG_NEED_RTNL,
14663         },
14664         {
14665                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14667                 .doit = nl80211_tx_control_port,
14668                 .flags = GENL_UNS_ADMIN_PERM,
14669                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14670                                   NL80211_FLAG_NEED_RTNL,
14671         },
14672         {
14673                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14674                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14675                 .doit = nl80211_get_ftm_responder_stats,
14676                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14677                                   NL80211_FLAG_NEED_RTNL,
14678         },
14679         {
14680                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14681                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682                 .doit = nl80211_pmsr_start,
14683                 .flags = GENL_UNS_ADMIN_PERM,
14684                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14685                                   NL80211_FLAG_NEED_RTNL,
14686         },
14687         {
14688                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14689                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14690                 .doit = nl80211_notify_radar_detection,
14691                 .flags = GENL_UNS_ADMIN_PERM,
14692                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14693                                   NL80211_FLAG_NEED_RTNL,
14694         },
14695         {
14696                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14697                 .doit = nl80211_update_owe_info,
14698                 .flags = GENL_ADMIN_PERM,
14699                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14700                                   NL80211_FLAG_NEED_RTNL,
14701         },
14702         {
14703                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14704                 .doit = nl80211_probe_mesh_link,
14705                 .flags = GENL_UNS_ADMIN_PERM,
14706                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14707                                   NL80211_FLAG_NEED_RTNL,
14708         },
14709 };
14710
14711 static struct genl_family nl80211_fam __ro_after_init = {
14712         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14713         .hdrsize = 0,                   /* no private header */
14714         .version = 1,                   /* no particular meaning now */
14715         .maxattr = NL80211_ATTR_MAX,
14716         .policy = nl80211_policy,
14717         .netnsok = true,
14718         .pre_doit = nl80211_pre_doit,
14719         .post_doit = nl80211_post_doit,
14720         .module = THIS_MODULE,
14721         .ops = nl80211_ops,
14722         .n_ops = ARRAY_SIZE(nl80211_ops),
14723         .mcgrps = nl80211_mcgrps,
14724         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14725         .parallel_ops = true,
14726 };
14727
14728 /* notification functions */
14729
14730 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14731                           enum nl80211_commands cmd)
14732 {
14733         struct sk_buff *msg;
14734         struct nl80211_dump_wiphy_state state = {};
14735
14736         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14737                 cmd != NL80211_CMD_DEL_WIPHY);
14738
14739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14740         if (!msg)
14741                 return;
14742
14743         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14744                 nlmsg_free(msg);
14745                 return;
14746         }
14747
14748         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14749                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14750 }
14751
14752 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14753                                 struct wireless_dev *wdev,
14754                                 enum nl80211_commands cmd)
14755 {
14756         struct sk_buff *msg;
14757
14758         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14759         if (!msg)
14760                 return;
14761
14762         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14763                 nlmsg_free(msg);
14764                 return;
14765         }
14766
14767         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14768                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14769 }
14770
14771 static int nl80211_add_scan_req(struct sk_buff *msg,
14772                                 struct cfg80211_registered_device *rdev)
14773 {
14774         struct cfg80211_scan_request *req = rdev->scan_req;
14775         struct nlattr *nest;
14776         int i;
14777
14778         if (WARN_ON(!req))
14779                 return 0;
14780
14781         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14782         if (!nest)
14783                 goto nla_put_failure;
14784         for (i = 0; i < req->n_ssids; i++) {
14785                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14786                         goto nla_put_failure;
14787         }
14788         nla_nest_end(msg, nest);
14789
14790         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14791         if (!nest)
14792                 goto nla_put_failure;
14793         for (i = 0; i < req->n_channels; i++) {
14794                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14795                         goto nla_put_failure;
14796         }
14797         nla_nest_end(msg, nest);
14798
14799         if (req->ie &&
14800             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14801                 goto nla_put_failure;
14802
14803         if (req->flags &&
14804             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14805                 goto nla_put_failure;
14806
14807         if (req->info.scan_start_tsf &&
14808             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14809                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14810              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14811                      req->info.tsf_bssid)))
14812                 goto nla_put_failure;
14813
14814         return 0;
14815  nla_put_failure:
14816         return -ENOBUFS;
14817 }
14818
14819 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14820                                  struct cfg80211_registered_device *rdev,
14821                                  struct wireless_dev *wdev,
14822                                  u32 portid, u32 seq, int flags,
14823                                  u32 cmd)
14824 {
14825         void *hdr;
14826
14827         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14828         if (!hdr)
14829                 return -1;
14830
14831         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14832             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14833                                          wdev->netdev->ifindex)) ||
14834             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14835                               NL80211_ATTR_PAD))
14836                 goto nla_put_failure;
14837
14838         /* ignore errors and send incomplete event anyway */
14839         nl80211_add_scan_req(msg, rdev);
14840
14841         genlmsg_end(msg, hdr);
14842         return 0;
14843
14844  nla_put_failure:
14845         genlmsg_cancel(msg, hdr);
14846         return -EMSGSIZE;
14847 }
14848
14849 static int
14850 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14851                             struct cfg80211_sched_scan_request *req, u32 cmd)
14852 {
14853         void *hdr;
14854
14855         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14856         if (!hdr)
14857                 return -1;
14858
14859         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14860                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14861             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14862             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14863                               NL80211_ATTR_PAD))
14864                 goto nla_put_failure;
14865
14866         genlmsg_end(msg, hdr);
14867         return 0;
14868
14869  nla_put_failure:
14870         genlmsg_cancel(msg, hdr);
14871         return -EMSGSIZE;
14872 }
14873
14874 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14875                              struct wireless_dev *wdev)
14876 {
14877         struct sk_buff *msg;
14878
14879         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14880         if (!msg)
14881                 return;
14882
14883         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14884                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14885                 nlmsg_free(msg);
14886                 return;
14887         }
14888
14889         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14890                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14891 }
14892
14893 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14894                                        struct wireless_dev *wdev, bool aborted)
14895 {
14896         struct sk_buff *msg;
14897
14898         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14899         if (!msg)
14900                 return NULL;
14901
14902         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14903                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14904                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14905                 nlmsg_free(msg);
14906                 return NULL;
14907         }
14908
14909         return msg;
14910 }
14911
14912 /* send message created by nl80211_build_scan_msg() */
14913 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14914                            struct sk_buff *msg)
14915 {
14916         if (!msg)
14917                 return;
14918
14919         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14920                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14921 }
14922
14923 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14924 {
14925         struct sk_buff *msg;
14926
14927         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14928         if (!msg)
14929                 return;
14930
14931         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14932                 nlmsg_free(msg);
14933                 return;
14934         }
14935
14936         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14937                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14938 }
14939
14940 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14941                                           struct regulatory_request *request)
14942 {
14943         /* Userspace can always count this one always being set */
14944         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14945                 goto nla_put_failure;
14946
14947         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14948                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14949                                NL80211_REGDOM_TYPE_WORLD))
14950                         goto nla_put_failure;
14951         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14952                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14953                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14954                         goto nla_put_failure;
14955         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14956                    request->intersect) {
14957                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14958                                NL80211_REGDOM_TYPE_INTERSECTION))
14959                         goto nla_put_failure;
14960         } else {
14961                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14962                                NL80211_REGDOM_TYPE_COUNTRY) ||
14963                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14964                                    request->alpha2))
14965                         goto nla_put_failure;
14966         }
14967
14968         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14969                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14970
14971                 if (wiphy &&
14972                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14973                         goto nla_put_failure;
14974
14975                 if (wiphy &&
14976                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14977                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14978                         goto nla_put_failure;
14979         }
14980
14981         return true;
14982
14983 nla_put_failure:
14984         return false;
14985 }
14986
14987 /*
14988  * This can happen on global regulatory changes or device specific settings
14989  * based on custom regulatory domains.
14990  */
14991 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14992                                      struct regulatory_request *request)
14993 {
14994         struct sk_buff *msg;
14995         void *hdr;
14996
14997         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14998         if (!msg)
14999                 return;
15000
15001         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15002         if (!hdr)
15003                 goto nla_put_failure;
15004
15005         if (!nl80211_reg_change_event_fill(msg, request))
15006                 goto nla_put_failure;
15007
15008         genlmsg_end(msg, hdr);
15009
15010         rcu_read_lock();
15011         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15012                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15013         rcu_read_unlock();
15014
15015         return;
15016
15017 nla_put_failure:
15018         nlmsg_free(msg);
15019 }
15020
15021 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15022                                     struct net_device *netdev,
15023                                     const u8 *buf, size_t len,
15024                                     enum nl80211_commands cmd, gfp_t gfp,
15025                                     int uapsd_queues, const u8 *req_ies,
15026                                     size_t req_ies_len)
15027 {
15028         struct sk_buff *msg;
15029         void *hdr;
15030
15031         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15032         if (!msg)
15033                 return;
15034
15035         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15036         if (!hdr) {
15037                 nlmsg_free(msg);
15038                 return;
15039         }
15040
15041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15042             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15043             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15044             (req_ies &&
15045              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15046                 goto nla_put_failure;
15047
15048         if (uapsd_queues >= 0) {
15049                 struct nlattr *nla_wmm =
15050                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15051                 if (!nla_wmm)
15052                         goto nla_put_failure;
15053
15054                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15055                                uapsd_queues))
15056                         goto nla_put_failure;
15057
15058                 nla_nest_end(msg, nla_wmm);
15059         }
15060
15061         genlmsg_end(msg, hdr);
15062
15063         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15064                                 NL80211_MCGRP_MLME, gfp);
15065         return;
15066
15067  nla_put_failure:
15068         nlmsg_free(msg);
15069 }
15070
15071 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15072                           struct net_device *netdev, const u8 *buf,
15073                           size_t len, gfp_t gfp)
15074 {
15075         nl80211_send_mlme_event(rdev, netdev, buf, len,
15076                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15077 }
15078
15079 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15080                            struct net_device *netdev, const u8 *buf,
15081                            size_t len, gfp_t gfp, int uapsd_queues,
15082                            const u8 *req_ies, size_t req_ies_len)
15083 {
15084         nl80211_send_mlme_event(rdev, netdev, buf, len,
15085                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15086                                 req_ies, req_ies_len);
15087 }
15088
15089 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15090                          struct net_device *netdev, const u8 *buf,
15091                          size_t len, gfp_t gfp)
15092 {
15093         nl80211_send_mlme_event(rdev, netdev, buf, len,
15094                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15095 }
15096
15097 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15098                            struct net_device *netdev, const u8 *buf,
15099                            size_t len, gfp_t gfp)
15100 {
15101         nl80211_send_mlme_event(rdev, netdev, buf, len,
15102                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15103 }
15104
15105 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15106                                   size_t len)
15107 {
15108         struct wireless_dev *wdev = dev->ieee80211_ptr;
15109         struct wiphy *wiphy = wdev->wiphy;
15110         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15111         const struct ieee80211_mgmt *mgmt = (void *)buf;
15112         u32 cmd;
15113
15114         if (WARN_ON(len < 2))
15115                 return;
15116
15117         if (ieee80211_is_deauth(mgmt->frame_control))
15118                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15119         else
15120                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15121
15122         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15123         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15124                                 NULL, 0);
15125 }
15126 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15127
15128 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15129                                       struct net_device *netdev, int cmd,
15130                                       const u8 *addr, gfp_t gfp)
15131 {
15132         struct sk_buff *msg;
15133         void *hdr;
15134
15135         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15136         if (!msg)
15137                 return;
15138
15139         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15140         if (!hdr) {
15141                 nlmsg_free(msg);
15142                 return;
15143         }
15144
15145         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15146             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15147             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15148             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15149                 goto nla_put_failure;
15150
15151         genlmsg_end(msg, hdr);
15152
15153         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15154                                 NL80211_MCGRP_MLME, gfp);
15155         return;
15156
15157  nla_put_failure:
15158         nlmsg_free(msg);
15159 }
15160
15161 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15162                                struct net_device *netdev, const u8 *addr,
15163                                gfp_t gfp)
15164 {
15165         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15166                                   addr, gfp);
15167 }
15168
15169 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15170                                 struct net_device *netdev, const u8 *addr,
15171                                 gfp_t gfp)
15172 {
15173         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15174                                   addr, gfp);
15175 }
15176
15177 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15178                                  struct net_device *netdev,
15179                                  struct cfg80211_connect_resp_params *cr,
15180                                  gfp_t gfp)
15181 {
15182         struct sk_buff *msg;
15183         void *hdr;
15184
15185         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15186                         cr->fils.kek_len + cr->fils.pmk_len +
15187                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15188         if (!msg)
15189                 return;
15190
15191         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15192         if (!hdr) {
15193                 nlmsg_free(msg);
15194                 return;
15195         }
15196
15197         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15198             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15199             (cr->bssid &&
15200              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15201             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15202                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15203                         cr->status) ||
15204             (cr->status < 0 &&
15205              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15206               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15207                           cr->timeout_reason))) ||
15208             (cr->req_ie &&
15209              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15210             (cr->resp_ie &&
15211              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15212                      cr->resp_ie)) ||
15213             (cr->fils.update_erp_next_seq_num &&
15214              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15215                          cr->fils.erp_next_seq_num)) ||
15216             (cr->status == WLAN_STATUS_SUCCESS &&
15217              ((cr->fils.kek &&
15218                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15219                        cr->fils.kek)) ||
15220               (cr->fils.pmk &&
15221                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15222               (cr->fils.pmkid &&
15223                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15224                 goto nla_put_failure;
15225
15226         genlmsg_end(msg, hdr);
15227
15228         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15229                                 NL80211_MCGRP_MLME, gfp);
15230         return;
15231
15232  nla_put_failure:
15233         nlmsg_free(msg);
15234 }
15235
15236 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15237                          struct net_device *netdev,
15238                          struct cfg80211_roam_info *info, gfp_t gfp)
15239 {
15240         struct sk_buff *msg;
15241         void *hdr;
15242         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15243
15244         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15245                         info->fils.kek_len + info->fils.pmk_len +
15246                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15247         if (!msg)
15248                 return;
15249
15250         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15251         if (!hdr) {
15252                 nlmsg_free(msg);
15253                 return;
15254         }
15255
15256         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15257             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15258             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15259             (info->req_ie &&
15260              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15261                      info->req_ie)) ||
15262             (info->resp_ie &&
15263              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15264                      info->resp_ie)) ||
15265             (info->fils.update_erp_next_seq_num &&
15266              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15267                          info->fils.erp_next_seq_num)) ||
15268             (info->fils.kek &&
15269              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15270                      info->fils.kek)) ||
15271             (info->fils.pmk &&
15272              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15273             (info->fils.pmkid &&
15274              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15275                 goto nla_put_failure;
15276
15277         genlmsg_end(msg, hdr);
15278
15279         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15280                                 NL80211_MCGRP_MLME, gfp);
15281         return;
15282
15283  nla_put_failure:
15284         nlmsg_free(msg);
15285 }
15286
15287 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15288                                   struct net_device *netdev, const u8 *bssid)
15289 {
15290         struct sk_buff *msg;
15291         void *hdr;
15292
15293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15294         if (!msg)
15295                 return;
15296
15297         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15298         if (!hdr) {
15299                 nlmsg_free(msg);
15300                 return;
15301         }
15302
15303         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15305             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15306                 goto nla_put_failure;
15307
15308         genlmsg_end(msg, hdr);
15309
15310         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15311                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15312         return;
15313
15314  nla_put_failure:
15315         nlmsg_free(msg);
15316 }
15317
15318 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15319                                struct net_device *netdev, u16 reason,
15320                                const u8 *ie, size_t ie_len, bool from_ap)
15321 {
15322         struct sk_buff *msg;
15323         void *hdr;
15324
15325         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15326         if (!msg)
15327                 return;
15328
15329         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15330         if (!hdr) {
15331                 nlmsg_free(msg);
15332                 return;
15333         }
15334
15335         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15336             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15337             (reason &&
15338              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15339             (from_ap &&
15340              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15341             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15342                 goto nla_put_failure;
15343
15344         genlmsg_end(msg, hdr);
15345
15346         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15347                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15348         return;
15349
15350  nla_put_failure:
15351         nlmsg_free(msg);
15352 }
15353
15354 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15355                              struct net_device *netdev, const u8 *bssid,
15356                              gfp_t gfp)
15357 {
15358         struct sk_buff *msg;
15359         void *hdr;
15360
15361         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15362         if (!msg)
15363                 return;
15364
15365         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15366         if (!hdr) {
15367                 nlmsg_free(msg);
15368                 return;
15369         }
15370
15371         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15372             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15373             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15374                 goto nla_put_failure;
15375
15376         genlmsg_end(msg, hdr);
15377
15378         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15379                                 NL80211_MCGRP_MLME, gfp);
15380         return;
15381
15382  nla_put_failure:
15383         nlmsg_free(msg);
15384 }
15385
15386 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15387                                         const u8 *ie, u8 ie_len,
15388                                         int sig_dbm, gfp_t gfp)
15389 {
15390         struct wireless_dev *wdev = dev->ieee80211_ptr;
15391         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15392         struct sk_buff *msg;
15393         void *hdr;
15394
15395         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15396                 return;
15397
15398         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15399
15400         msg = nlmsg_new(100 + ie_len, gfp);
15401         if (!msg)
15402                 return;
15403
15404         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15405         if (!hdr) {
15406                 nlmsg_free(msg);
15407                 return;
15408         }
15409
15410         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15411             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15412             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15413             (ie_len && ie &&
15414              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15415             (sig_dbm &&
15416              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15417                 goto nla_put_failure;
15418
15419         genlmsg_end(msg, hdr);
15420
15421         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15422                                 NL80211_MCGRP_MLME, gfp);
15423         return;
15424
15425  nla_put_failure:
15426         nlmsg_free(msg);
15427 }
15428 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15429
15430 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15431                                  struct net_device *netdev, const u8 *addr,
15432                                  enum nl80211_key_type key_type, int key_id,
15433                                  const u8 *tsc, gfp_t gfp)
15434 {
15435         struct sk_buff *msg;
15436         void *hdr;
15437
15438         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15439         if (!msg)
15440                 return;
15441
15442         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15443         if (!hdr) {
15444                 nlmsg_free(msg);
15445                 return;
15446         }
15447
15448         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15449             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15450             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15451             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15452             (key_id != -1 &&
15453              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15454             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15455                 goto nla_put_failure;
15456
15457         genlmsg_end(msg, hdr);
15458
15459         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15460                                 NL80211_MCGRP_MLME, gfp);
15461         return;
15462
15463  nla_put_failure:
15464         nlmsg_free(msg);
15465 }
15466
15467 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15468                                     struct ieee80211_channel *channel_before,
15469                                     struct ieee80211_channel *channel_after)
15470 {
15471         struct sk_buff *msg;
15472         void *hdr;
15473         struct nlattr *nl_freq;
15474
15475         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15476         if (!msg)
15477                 return;
15478
15479         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15480         if (!hdr) {
15481                 nlmsg_free(msg);
15482                 return;
15483         }
15484
15485         /*
15486          * Since we are applying the beacon hint to a wiphy we know its
15487          * wiphy_idx is valid
15488          */
15489         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15490                 goto nla_put_failure;
15491
15492         /* Before */
15493         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15494         if (!nl_freq)
15495                 goto nla_put_failure;
15496
15497         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15498                 goto nla_put_failure;
15499         nla_nest_end(msg, nl_freq);
15500
15501         /* After */
15502         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15503         if (!nl_freq)
15504                 goto nla_put_failure;
15505
15506         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15507                 goto nla_put_failure;
15508         nla_nest_end(msg, nl_freq);
15509
15510         genlmsg_end(msg, hdr);
15511
15512         rcu_read_lock();
15513         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15514                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15515         rcu_read_unlock();
15516
15517         return;
15518
15519 nla_put_failure:
15520         nlmsg_free(msg);
15521 }
15522
15523 static void nl80211_send_remain_on_chan_event(
15524         int cmd, struct cfg80211_registered_device *rdev,
15525         struct wireless_dev *wdev, u64 cookie,
15526         struct ieee80211_channel *chan,
15527         unsigned int duration, gfp_t gfp)
15528 {
15529         struct sk_buff *msg;
15530         void *hdr;
15531
15532         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15533         if (!msg)
15534                 return;
15535
15536         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15537         if (!hdr) {
15538                 nlmsg_free(msg);
15539                 return;
15540         }
15541
15542         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15543             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15544                                          wdev->netdev->ifindex)) ||
15545             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15546                               NL80211_ATTR_PAD) ||
15547             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15548             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15549                         NL80211_CHAN_NO_HT) ||
15550             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15551                               NL80211_ATTR_PAD))
15552                 goto nla_put_failure;
15553
15554         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15555             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15556                 goto nla_put_failure;
15557
15558         genlmsg_end(msg, hdr);
15559
15560         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15561                                 NL80211_MCGRP_MLME, gfp);
15562         return;
15563
15564  nla_put_failure:
15565         nlmsg_free(msg);
15566 }
15567
15568 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15569                                struct ieee80211_channel *chan,
15570                                unsigned int duration, gfp_t gfp)
15571 {
15572         struct wiphy *wiphy = wdev->wiphy;
15573         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15574
15575         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15576         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15577                                           rdev, wdev, cookie, chan,
15578                                           duration, gfp);
15579 }
15580 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15581
15582 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15583                                         struct ieee80211_channel *chan,
15584                                         gfp_t gfp)
15585 {
15586         struct wiphy *wiphy = wdev->wiphy;
15587         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15588
15589         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15590         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15591                                           rdev, wdev, cookie, chan, 0, gfp);
15592 }
15593 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15594
15595 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15596                                         struct ieee80211_channel *chan,
15597                                         gfp_t gfp)
15598 {
15599         struct wiphy *wiphy = wdev->wiphy;
15600         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15601
15602         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15603         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15604                                           rdev, wdev, cookie, chan, 0, gfp);
15605 }
15606 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15607
15608 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15609                       struct station_info *sinfo, gfp_t gfp)
15610 {
15611         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15612         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15613         struct sk_buff *msg;
15614
15615         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15616
15617         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15618         if (!msg)
15619                 return;
15620
15621         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15622                                  rdev, dev, mac_addr, sinfo) < 0) {
15623                 nlmsg_free(msg);
15624                 return;
15625         }
15626
15627         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15628                                 NL80211_MCGRP_MLME, gfp);
15629 }
15630 EXPORT_SYMBOL(cfg80211_new_sta);
15631
15632 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15633                             struct station_info *sinfo, gfp_t gfp)
15634 {
15635         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15636         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15637         struct sk_buff *msg;
15638         struct station_info empty_sinfo = {};
15639
15640         if (!sinfo)
15641                 sinfo = &empty_sinfo;
15642
15643         trace_cfg80211_del_sta(dev, mac_addr);
15644
15645         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15646         if (!msg) {
15647                 cfg80211_sinfo_release_content(sinfo);
15648                 return;
15649         }
15650
15651         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15652                                  rdev, dev, mac_addr, sinfo) < 0) {
15653                 nlmsg_free(msg);
15654                 return;
15655         }
15656
15657         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15658                                 NL80211_MCGRP_MLME, gfp);
15659 }
15660 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15661
15662 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15663                           enum nl80211_connect_failed_reason reason,
15664                           gfp_t gfp)
15665 {
15666         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15667         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15668         struct sk_buff *msg;
15669         void *hdr;
15670
15671         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15672         if (!msg)
15673                 return;
15674
15675         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15676         if (!hdr) {
15677                 nlmsg_free(msg);
15678                 return;
15679         }
15680
15681         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15682             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15683             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15684                 goto nla_put_failure;
15685
15686         genlmsg_end(msg, hdr);
15687
15688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15689                                 NL80211_MCGRP_MLME, gfp);
15690         return;
15691
15692  nla_put_failure:
15693         nlmsg_free(msg);
15694 }
15695 EXPORT_SYMBOL(cfg80211_conn_failed);
15696
15697 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15698                                        const u8 *addr, gfp_t gfp)
15699 {
15700         struct wireless_dev *wdev = dev->ieee80211_ptr;
15701         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15702         struct sk_buff *msg;
15703         void *hdr;
15704         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15705
15706         if (!nlportid)
15707                 return false;
15708
15709         msg = nlmsg_new(100, gfp);
15710         if (!msg)
15711                 return true;
15712
15713         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15714         if (!hdr) {
15715                 nlmsg_free(msg);
15716                 return true;
15717         }
15718
15719         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15720             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15721             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15722                 goto nla_put_failure;
15723
15724         genlmsg_end(msg, hdr);
15725         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15726         return true;
15727
15728  nla_put_failure:
15729         nlmsg_free(msg);
15730         return true;
15731 }
15732
15733 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15734                                 const u8 *addr, gfp_t gfp)
15735 {
15736         struct wireless_dev *wdev = dev->ieee80211_ptr;
15737         bool ret;
15738
15739         trace_cfg80211_rx_spurious_frame(dev, addr);
15740
15741         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15742                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15743                 trace_cfg80211_return_bool(false);
15744                 return false;
15745         }
15746         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15747                                          addr, gfp);
15748         trace_cfg80211_return_bool(ret);
15749         return ret;
15750 }
15751 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15752
15753 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15754                                         const u8 *addr, gfp_t gfp)
15755 {
15756         struct wireless_dev *wdev = dev->ieee80211_ptr;
15757         bool ret;
15758
15759         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15760
15761         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15762                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15763                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15764                 trace_cfg80211_return_bool(false);
15765                 return false;
15766         }
15767         ret = __nl80211_unexpected_frame(dev,
15768                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15769                                          addr, gfp);
15770         trace_cfg80211_return_bool(ret);
15771         return ret;
15772 }
15773 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15774
15775 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15776                       struct wireless_dev *wdev, u32 nlportid,
15777                       int freq, int sig_dbm,
15778                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15779 {
15780         struct net_device *netdev = wdev->netdev;
15781         struct sk_buff *msg;
15782         void *hdr;
15783
15784         msg = nlmsg_new(100 + len, gfp);
15785         if (!msg)
15786                 return -ENOMEM;
15787
15788         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15789         if (!hdr) {
15790                 nlmsg_free(msg);
15791                 return -ENOMEM;
15792         }
15793
15794         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15795             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15796                                         netdev->ifindex)) ||
15797             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15798                               NL80211_ATTR_PAD) ||
15799             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15800             (sig_dbm &&
15801              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15802             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15803             (flags &&
15804              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15805                 goto nla_put_failure;
15806
15807         genlmsg_end(msg, hdr);
15808
15809         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15810
15811  nla_put_failure:
15812         nlmsg_free(msg);
15813         return -ENOBUFS;
15814 }
15815
15816 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15817                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15818 {
15819         struct wiphy *wiphy = wdev->wiphy;
15820         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15821         struct net_device *netdev = wdev->netdev;
15822         struct sk_buff *msg;
15823         void *hdr;
15824
15825         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15826
15827         msg = nlmsg_new(100 + len, gfp);
15828         if (!msg)
15829                 return;
15830
15831         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15832         if (!hdr) {
15833                 nlmsg_free(msg);
15834                 return;
15835         }
15836
15837         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15838             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15839                                    netdev->ifindex)) ||
15840             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15841                               NL80211_ATTR_PAD) ||
15842             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15843             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15844                               NL80211_ATTR_PAD) ||
15845             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15846                 goto nla_put_failure;
15847
15848         genlmsg_end(msg, hdr);
15849
15850         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15851                                 NL80211_MCGRP_MLME, gfp);
15852         return;
15853
15854  nla_put_failure:
15855         nlmsg_free(msg);
15856 }
15857 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15858
15859 static int __nl80211_rx_control_port(struct net_device *dev,
15860                                      struct sk_buff *skb,
15861                                      bool unencrypted, gfp_t gfp)
15862 {
15863         struct wireless_dev *wdev = dev->ieee80211_ptr;
15864         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15865         struct ethhdr *ehdr = eth_hdr(skb);
15866         const u8 *addr = ehdr->h_source;
15867         u16 proto = be16_to_cpu(skb->protocol);
15868         struct sk_buff *msg;
15869         void *hdr;
15870         struct nlattr *frame;
15871
15872         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15873
15874         if (!nlportid)
15875                 return -ENOENT;
15876
15877         msg = nlmsg_new(100 + skb->len, gfp);
15878         if (!msg)
15879                 return -ENOMEM;
15880
15881         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15882         if (!hdr) {
15883                 nlmsg_free(msg);
15884                 return -ENOBUFS;
15885         }
15886
15887         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15888             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15889             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15890                               NL80211_ATTR_PAD) ||
15891             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15892             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15893             (unencrypted && nla_put_flag(msg,
15894                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15895                 goto nla_put_failure;
15896
15897         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15898         if (!frame)
15899                 goto nla_put_failure;
15900
15901         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15902         genlmsg_end(msg, hdr);
15903
15904         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15905
15906  nla_put_failure:
15907         nlmsg_free(msg);
15908         return -ENOBUFS;
15909 }
15910
15911 bool cfg80211_rx_control_port(struct net_device *dev,
15912                               struct sk_buff *skb, bool unencrypted)
15913 {
15914         int ret;
15915
15916         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15917         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15918         trace_cfg80211_return_bool(ret == 0);
15919         return ret == 0;
15920 }
15921 EXPORT_SYMBOL(cfg80211_rx_control_port);
15922
15923 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15924                                             const char *mac, gfp_t gfp)
15925 {
15926         struct wireless_dev *wdev = dev->ieee80211_ptr;
15927         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15928         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15929         void **cb;
15930
15931         if (!msg)
15932                 return NULL;
15933
15934         cb = (void **)msg->cb;
15935
15936         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15937         if (!cb[0]) {
15938                 nlmsg_free(msg);
15939                 return NULL;
15940         }
15941
15942         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15943             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15944                 goto nla_put_failure;
15945
15946         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15947                 goto nla_put_failure;
15948
15949         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15950         if (!cb[1])
15951                 goto nla_put_failure;
15952
15953         cb[2] = rdev;
15954
15955         return msg;
15956  nla_put_failure:
15957         nlmsg_free(msg);
15958         return NULL;
15959 }
15960
15961 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15962 {
15963         void **cb = (void **)msg->cb;
15964         struct cfg80211_registered_device *rdev = cb[2];
15965
15966         nla_nest_end(msg, cb[1]);
15967         genlmsg_end(msg, cb[0]);
15968
15969         memset(msg->cb, 0, sizeof(msg->cb));
15970
15971         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15972                                 NL80211_MCGRP_MLME, gfp);
15973 }
15974
15975 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15976                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15977                               s32 rssi_level, gfp_t gfp)
15978 {
15979         struct sk_buff *msg;
15980         struct wireless_dev *wdev = dev->ieee80211_ptr;
15981         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15982
15983         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15984
15985         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15986                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15987                 return;
15988
15989         if (wdev->cqm_config) {
15990                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15991
15992                 cfg80211_cqm_rssi_update(rdev, dev);
15993
15994                 if (rssi_level == 0)
15995                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15996         }
15997
15998         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15999         if (!msg)
16000                 return;
16001
16002         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16003                         rssi_event))
16004                 goto nla_put_failure;
16005
16006         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16007                                       rssi_level))
16008                 goto nla_put_failure;
16009
16010         cfg80211_send_cqm(msg, gfp);
16011
16012         return;
16013
16014  nla_put_failure:
16015         nlmsg_free(msg);
16016 }
16017 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16018
16019 void cfg80211_cqm_txe_notify(struct net_device *dev,
16020                              const u8 *peer, u32 num_packets,
16021                              u32 rate, u32 intvl, gfp_t gfp)
16022 {
16023         struct sk_buff *msg;
16024
16025         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16026         if (!msg)
16027                 return;
16028
16029         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16030                 goto nla_put_failure;
16031
16032         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16033                 goto nla_put_failure;
16034
16035         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16036                 goto nla_put_failure;
16037
16038         cfg80211_send_cqm(msg, gfp);
16039         return;
16040
16041  nla_put_failure:
16042         nlmsg_free(msg);
16043 }
16044 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16045
16046 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16047                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16048 {
16049         struct sk_buff *msg;
16050
16051         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16052
16053         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16054         if (!msg)
16055                 return;
16056
16057         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16058                 goto nla_put_failure;
16059
16060         cfg80211_send_cqm(msg, gfp);
16061         return;
16062
16063  nla_put_failure:
16064         nlmsg_free(msg);
16065 }
16066 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16067
16068 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16069 {
16070         struct sk_buff *msg;
16071
16072         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16073         if (!msg)
16074                 return;
16075
16076         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16077                 goto nla_put_failure;
16078
16079         cfg80211_send_cqm(msg, gfp);
16080         return;
16081
16082  nla_put_failure:
16083         nlmsg_free(msg);
16084 }
16085 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16086
16087 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16088                                      struct net_device *netdev, const u8 *bssid,
16089                                      const u8 *replay_ctr, gfp_t gfp)
16090 {
16091         struct sk_buff *msg;
16092         struct nlattr *rekey_attr;
16093         void *hdr;
16094
16095         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16096         if (!msg)
16097                 return;
16098
16099         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16100         if (!hdr) {
16101                 nlmsg_free(msg);
16102                 return;
16103         }
16104
16105         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16106             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16107             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16108                 goto nla_put_failure;
16109
16110         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16111         if (!rekey_attr)
16112                 goto nla_put_failure;
16113
16114         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16115                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16116                 goto nla_put_failure;
16117
16118         nla_nest_end(msg, rekey_attr);
16119
16120         genlmsg_end(msg, hdr);
16121
16122         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16123                                 NL80211_MCGRP_MLME, gfp);
16124         return;
16125
16126  nla_put_failure:
16127         nlmsg_free(msg);
16128 }
16129
16130 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16131                                const u8 *replay_ctr, gfp_t gfp)
16132 {
16133         struct wireless_dev *wdev = dev->ieee80211_ptr;
16134         struct wiphy *wiphy = wdev->wiphy;
16135         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16136
16137         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16138         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16139 }
16140 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16141
16142 static void
16143 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16144                                struct net_device *netdev, int index,
16145                                const u8 *bssid, bool preauth, gfp_t gfp)
16146 {
16147         struct sk_buff *msg;
16148         struct nlattr *attr;
16149         void *hdr;
16150
16151         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16152         if (!msg)
16153                 return;
16154
16155         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
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, netdev->ifindex))
16163                 goto nla_put_failure;
16164
16165         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16166         if (!attr)
16167                 goto nla_put_failure;
16168
16169         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16170             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16171             (preauth &&
16172              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16173                 goto nla_put_failure;
16174
16175         nla_nest_end(msg, attr);
16176
16177         genlmsg_end(msg, hdr);
16178
16179         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16180                                 NL80211_MCGRP_MLME, gfp);
16181         return;
16182
16183  nla_put_failure:
16184         nlmsg_free(msg);
16185 }
16186
16187 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16188                                      const u8 *bssid, bool preauth, gfp_t gfp)
16189 {
16190         struct wireless_dev *wdev = dev->ieee80211_ptr;
16191         struct wiphy *wiphy = wdev->wiphy;
16192         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16193
16194         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16195         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16196 }
16197 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16198
16199 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16200                                      struct net_device *netdev,
16201                                      struct cfg80211_chan_def *chandef,
16202                                      gfp_t gfp,
16203                                      enum nl80211_commands notif,
16204                                      u8 count)
16205 {
16206         struct sk_buff *msg;
16207         void *hdr;
16208
16209         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16210         if (!msg)
16211                 return;
16212
16213         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16214         if (!hdr) {
16215                 nlmsg_free(msg);
16216                 return;
16217         }
16218
16219         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16220                 goto nla_put_failure;
16221
16222         if (nl80211_send_chandef(msg, chandef))
16223                 goto nla_put_failure;
16224
16225         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16226             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16227                         goto nla_put_failure;
16228
16229         genlmsg_end(msg, hdr);
16230
16231         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16232                                 NL80211_MCGRP_MLME, gfp);
16233         return;
16234
16235  nla_put_failure:
16236         nlmsg_free(msg);
16237 }
16238
16239 void cfg80211_ch_switch_notify(struct net_device *dev,
16240                                struct cfg80211_chan_def *chandef)
16241 {
16242         struct wireless_dev *wdev = dev->ieee80211_ptr;
16243         struct wiphy *wiphy = wdev->wiphy;
16244         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16245
16246         ASSERT_WDEV_LOCK(wdev);
16247
16248         trace_cfg80211_ch_switch_notify(dev, chandef);
16249
16250         wdev->chandef = *chandef;
16251         wdev->preset_chandef = *chandef;
16252
16253         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16254             !WARN_ON(!wdev->current_bss))
16255                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16256
16257         cfg80211_sched_dfs_chan_update(rdev);
16258
16259         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16260                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16261 }
16262 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16263
16264 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16265                                        struct cfg80211_chan_def *chandef,
16266                                        u8 count)
16267 {
16268         struct wireless_dev *wdev = dev->ieee80211_ptr;
16269         struct wiphy *wiphy = wdev->wiphy;
16270         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16271
16272         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16273
16274         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16275                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16276 }
16277 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16278
16279 void
16280 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16281                      const struct cfg80211_chan_def *chandef,
16282                      enum nl80211_radar_event event,
16283                      struct net_device *netdev, gfp_t gfp)
16284 {
16285         struct sk_buff *msg;
16286         void *hdr;
16287
16288         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16289         if (!msg)
16290                 return;
16291
16292         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16293         if (!hdr) {
16294                 nlmsg_free(msg);
16295                 return;
16296         }
16297
16298         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16299                 goto nla_put_failure;
16300
16301         /* NOP and radar events don't need a netdev parameter */
16302         if (netdev) {
16303                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16304
16305                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16306                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16307                                       NL80211_ATTR_PAD))
16308                         goto nla_put_failure;
16309         }
16310
16311         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16312                 goto nla_put_failure;
16313
16314         if (nl80211_send_chandef(msg, chandef))
16315                 goto nla_put_failure;
16316
16317         genlmsg_end(msg, hdr);
16318
16319         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16320                                 NL80211_MCGRP_MLME, gfp);
16321         return;
16322
16323  nla_put_failure:
16324         nlmsg_free(msg);
16325 }
16326
16327 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16328                                        struct sta_opmode_info *sta_opmode,
16329                                        gfp_t gfp)
16330 {
16331         struct sk_buff *msg;
16332         struct wireless_dev *wdev = dev->ieee80211_ptr;
16333         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16334         void *hdr;
16335
16336         if (WARN_ON(!mac))
16337                 return;
16338
16339         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16340         if (!msg)
16341                 return;
16342
16343         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16344         if (!hdr) {
16345                 nlmsg_free(msg);
16346                 return;
16347         }
16348
16349         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16350                 goto nla_put_failure;
16351
16352         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16353                 goto nla_put_failure;
16354
16355         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16356                 goto nla_put_failure;
16357
16358         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16359             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16360                 goto nla_put_failure;
16361
16362         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16363             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16364                 goto nla_put_failure;
16365
16366         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16367             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16368                 goto nla_put_failure;
16369
16370         genlmsg_end(msg, hdr);
16371
16372         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16373                                 NL80211_MCGRP_MLME, gfp);
16374
16375         return;
16376
16377 nla_put_failure:
16378         nlmsg_free(msg);
16379 }
16380 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16381
16382 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16383                            u64 cookie, bool acked, s32 ack_signal,
16384                            bool is_valid_ack_signal, gfp_t gfp)
16385 {
16386         struct wireless_dev *wdev = dev->ieee80211_ptr;
16387         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16388         struct sk_buff *msg;
16389         void *hdr;
16390
16391         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16392
16393         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16394
16395         if (!msg)
16396                 return;
16397
16398         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16399         if (!hdr) {
16400                 nlmsg_free(msg);
16401                 return;
16402         }
16403
16404         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16405             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16406             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16407             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16408                               NL80211_ATTR_PAD) ||
16409             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16410             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16411                                                 ack_signal)))
16412                 goto nla_put_failure;
16413
16414         genlmsg_end(msg, hdr);
16415
16416         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16417                                 NL80211_MCGRP_MLME, gfp);
16418         return;
16419
16420  nla_put_failure:
16421         nlmsg_free(msg);
16422 }
16423 EXPORT_SYMBOL(cfg80211_probe_status);
16424
16425 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16426                                  const u8 *frame, size_t len,
16427                                  int freq, int sig_dbm)
16428 {
16429         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16430         struct sk_buff *msg;
16431         void *hdr;
16432         struct cfg80211_beacon_registration *reg;
16433
16434         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16435
16436         spin_lock_bh(&rdev->beacon_registrations_lock);
16437         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16438                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16439                 if (!msg) {
16440                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16441                         return;
16442                 }
16443
16444                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16445                 if (!hdr)
16446                         goto nla_put_failure;
16447
16448                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16449                     (freq &&
16450                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16451                     (sig_dbm &&
16452                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16453                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16454                         goto nla_put_failure;
16455
16456                 genlmsg_end(msg, hdr);
16457
16458                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16459         }
16460         spin_unlock_bh(&rdev->beacon_registrations_lock);
16461         return;
16462
16463  nla_put_failure:
16464         spin_unlock_bh(&rdev->beacon_registrations_lock);
16465         nlmsg_free(msg);
16466 }
16467 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16468
16469 #ifdef CONFIG_PM
16470 static int cfg80211_net_detect_results(struct sk_buff *msg,
16471                                        struct cfg80211_wowlan_wakeup *wakeup)
16472 {
16473         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16474         struct nlattr *nl_results, *nl_match, *nl_freqs;
16475         int i, j;
16476
16477         nl_results = nla_nest_start_noflag(msg,
16478                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16479         if (!nl_results)
16480                 return -EMSGSIZE;
16481
16482         for (i = 0; i < nd->n_matches; i++) {
16483                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16484
16485                 nl_match = nla_nest_start_noflag(msg, i);
16486                 if (!nl_match)
16487                         break;
16488
16489                 /* The SSID attribute is optional in nl80211, but for
16490                  * simplicity reasons it's always present in the
16491                  * cfg80211 structure.  If a driver can't pass the
16492                  * SSID, that needs to be changed.  A zero length SSID
16493                  * is still a valid SSID (wildcard), so it cannot be
16494                  * used for this purpose.
16495                  */
16496                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16497                             match->ssid.ssid)) {
16498                         nla_nest_cancel(msg, nl_match);
16499                         goto out;
16500                 }
16501
16502                 if (match->n_channels) {
16503                         nl_freqs = nla_nest_start_noflag(msg,
16504                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16505                         if (!nl_freqs) {
16506                                 nla_nest_cancel(msg, nl_match);
16507                                 goto out;
16508                         }
16509
16510                         for (j = 0; j < match->n_channels; j++) {
16511                                 if (nla_put_u32(msg, j, match->channels[j])) {
16512                                         nla_nest_cancel(msg, nl_freqs);
16513                                         nla_nest_cancel(msg, nl_match);
16514                                         goto out;
16515                                 }
16516                         }
16517
16518                         nla_nest_end(msg, nl_freqs);
16519                 }
16520
16521                 nla_nest_end(msg, nl_match);
16522         }
16523
16524 out:
16525         nla_nest_end(msg, nl_results);
16526         return 0;
16527 }
16528
16529 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16530                                    struct cfg80211_wowlan_wakeup *wakeup,
16531                                    gfp_t gfp)
16532 {
16533         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16534         struct sk_buff *msg;
16535         void *hdr;
16536         int size = 200;
16537
16538         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16539
16540         if (wakeup)
16541                 size += wakeup->packet_present_len;
16542
16543         msg = nlmsg_new(size, gfp);
16544         if (!msg)
16545                 return;
16546
16547         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16548         if (!hdr)
16549                 goto free_msg;
16550
16551         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16552             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16553                               NL80211_ATTR_PAD))
16554                 goto free_msg;
16555
16556         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16557                                         wdev->netdev->ifindex))
16558                 goto free_msg;
16559
16560         if (wakeup) {
16561                 struct nlattr *reasons;
16562
16563                 reasons = nla_nest_start_noflag(msg,
16564                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16565                 if (!reasons)
16566                         goto free_msg;
16567
16568                 if (wakeup->disconnect &&
16569                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16570                         goto free_msg;
16571                 if (wakeup->magic_pkt &&
16572                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16573                         goto free_msg;
16574                 if (wakeup->gtk_rekey_failure &&
16575                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16576                         goto free_msg;
16577                 if (wakeup->eap_identity_req &&
16578                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16579                         goto free_msg;
16580                 if (wakeup->four_way_handshake &&
16581                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16582                         goto free_msg;
16583                 if (wakeup->rfkill_release &&
16584                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16585                         goto free_msg;
16586
16587                 if (wakeup->pattern_idx >= 0 &&
16588                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16589                                 wakeup->pattern_idx))
16590                         goto free_msg;
16591
16592                 if (wakeup->tcp_match &&
16593                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16594                         goto free_msg;
16595
16596                 if (wakeup->tcp_connlost &&
16597                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16598                         goto free_msg;
16599
16600                 if (wakeup->tcp_nomoretokens &&
16601                     nla_put_flag(msg,
16602                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16603                         goto free_msg;
16604
16605                 if (wakeup->packet) {
16606                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16607                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16608
16609                         if (!wakeup->packet_80211) {
16610                                 pkt_attr =
16611                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16612                                 len_attr =
16613                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16614                         }
16615
16616                         if (wakeup->packet_len &&
16617                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16618                                 goto free_msg;
16619
16620                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16621                                     wakeup->packet))
16622                                 goto free_msg;
16623                 }
16624
16625                 if (wakeup->net_detect &&
16626                     cfg80211_net_detect_results(msg, wakeup))
16627                                 goto free_msg;
16628
16629                 nla_nest_end(msg, reasons);
16630         }
16631
16632         genlmsg_end(msg, hdr);
16633
16634         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16635                                 NL80211_MCGRP_MLME, gfp);
16636         return;
16637
16638  free_msg:
16639         nlmsg_free(msg);
16640 }
16641 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16642 #endif
16643
16644 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16645                                 enum nl80211_tdls_operation oper,
16646                                 u16 reason_code, gfp_t gfp)
16647 {
16648         struct wireless_dev *wdev = dev->ieee80211_ptr;
16649         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16650         struct sk_buff *msg;
16651         void *hdr;
16652
16653         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16654                                          reason_code);
16655
16656         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16657         if (!msg)
16658                 return;
16659
16660         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16661         if (!hdr) {
16662                 nlmsg_free(msg);
16663                 return;
16664         }
16665
16666         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16667             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16668             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16669             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16670             (reason_code > 0 &&
16671              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16672                 goto nla_put_failure;
16673
16674         genlmsg_end(msg, hdr);
16675
16676         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16677                                 NL80211_MCGRP_MLME, gfp);
16678         return;
16679
16680  nla_put_failure:
16681         nlmsg_free(msg);
16682 }
16683 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16684
16685 static int nl80211_netlink_notify(struct notifier_block * nb,
16686                                   unsigned long state,
16687                                   void *_notify)
16688 {
16689         struct netlink_notify *notify = _notify;
16690         struct cfg80211_registered_device *rdev;
16691         struct wireless_dev *wdev;
16692         struct cfg80211_beacon_registration *reg, *tmp;
16693
16694         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16695                 return NOTIFY_DONE;
16696
16697         rcu_read_lock();
16698
16699         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16700                 struct cfg80211_sched_scan_request *sched_scan_req;
16701
16702                 list_for_each_entry_rcu(sched_scan_req,
16703                                         &rdev->sched_scan_req_list,
16704                                         list) {
16705                         if (sched_scan_req->owner_nlportid == notify->portid) {
16706                                 sched_scan_req->nl_owner_dead = true;
16707                                 schedule_work(&rdev->sched_scan_stop_wk);
16708                         }
16709                 }
16710
16711                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16712                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16713
16714                         if (wdev->owner_nlportid == notify->portid) {
16715                                 wdev->nl_owner_dead = true;
16716                                 schedule_work(&rdev->destroy_work);
16717                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16718                                 schedule_work(&wdev->disconnect_wk);
16719                         }
16720
16721                         cfg80211_release_pmsr(wdev, notify->portid);
16722                 }
16723
16724                 spin_lock_bh(&rdev->beacon_registrations_lock);
16725                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16726                                          list) {
16727                         if (reg->nlportid == notify->portid) {
16728                                 list_del(&reg->list);
16729                                 kfree(reg);
16730                                 break;
16731                         }
16732                 }
16733                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16734         }
16735
16736         rcu_read_unlock();
16737
16738         /*
16739          * It is possible that the user space process that is controlling the
16740          * indoor setting disappeared, so notify the regulatory core.
16741          */
16742         regulatory_netlink_notify(notify->portid);
16743         return NOTIFY_OK;
16744 }
16745
16746 static struct notifier_block nl80211_netlink_notifier = {
16747         .notifier_call = nl80211_netlink_notify,
16748 };
16749
16750 void cfg80211_ft_event(struct net_device *netdev,
16751                        struct cfg80211_ft_event_params *ft_event)
16752 {
16753         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16754         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16755         struct sk_buff *msg;
16756         void *hdr;
16757
16758         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16759
16760         if (!ft_event->target_ap)
16761                 return;
16762
16763         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16764                         GFP_KERNEL);
16765         if (!msg)
16766                 return;
16767
16768         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16769         if (!hdr)
16770                 goto out;
16771
16772         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16773             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16774             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16775                 goto out;
16776
16777         if (ft_event->ies &&
16778             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16779                 goto out;
16780         if (ft_event->ric_ies &&
16781             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16782                     ft_event->ric_ies))
16783                 goto out;
16784
16785         genlmsg_end(msg, hdr);
16786
16787         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16788                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16789         return;
16790  out:
16791         nlmsg_free(msg);
16792 }
16793 EXPORT_SYMBOL(cfg80211_ft_event);
16794
16795 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16796 {
16797         struct cfg80211_registered_device *rdev;
16798         struct sk_buff *msg;
16799         void *hdr;
16800         u32 nlportid;
16801
16802         rdev = wiphy_to_rdev(wdev->wiphy);
16803         if (!rdev->crit_proto_nlportid)
16804                 return;
16805
16806         nlportid = rdev->crit_proto_nlportid;
16807         rdev->crit_proto_nlportid = 0;
16808
16809         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16810         if (!msg)
16811                 return;
16812
16813         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16814         if (!hdr)
16815                 goto nla_put_failure;
16816
16817         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16818             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16819                               NL80211_ATTR_PAD))
16820                 goto nla_put_failure;
16821
16822         genlmsg_end(msg, hdr);
16823
16824         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16825         return;
16826
16827  nla_put_failure:
16828         nlmsg_free(msg);
16829 }
16830 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16831
16832 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16833 {
16834         struct wiphy *wiphy = wdev->wiphy;
16835         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16836         struct sk_buff *msg;
16837         void *hdr;
16838
16839         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16840         if (!msg)
16841                 return;
16842
16843         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16844         if (!hdr)
16845                 goto out;
16846
16847         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16848             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16849             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16850                               NL80211_ATTR_PAD))
16851                 goto out;
16852
16853         genlmsg_end(msg, hdr);
16854
16855         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16856                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16857         return;
16858  out:
16859         nlmsg_free(msg);
16860 }
16861
16862 int cfg80211_external_auth_request(struct net_device *dev,
16863                                    struct cfg80211_external_auth_params *params,
16864                                    gfp_t gfp)
16865 {
16866         struct wireless_dev *wdev = dev->ieee80211_ptr;
16867         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16868         struct sk_buff *msg;
16869         void *hdr;
16870
16871         if (!wdev->conn_owner_nlportid)
16872                 return -EINVAL;
16873
16874         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16875         if (!msg)
16876                 return -ENOMEM;
16877
16878         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16879         if (!hdr)
16880                 goto nla_put_failure;
16881
16882         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16883             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16884             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16885             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16886                         params->action) ||
16887             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16888             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16889                     params->ssid.ssid))
16890                 goto nla_put_failure;
16891
16892         genlmsg_end(msg, hdr);
16893         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16894                         wdev->conn_owner_nlportid);
16895         return 0;
16896
16897  nla_put_failure:
16898         nlmsg_free(msg);
16899         return -ENOBUFS;
16900 }
16901 EXPORT_SYMBOL(cfg80211_external_auth_request);
16902
16903 void cfg80211_update_owe_info_event(struct net_device *netdev,
16904                                     struct cfg80211_update_owe_info *owe_info,
16905                                     gfp_t gfp)
16906 {
16907         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16908         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16909         struct sk_buff *msg;
16910         void *hdr;
16911
16912         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16913
16914         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16915         if (!msg)
16916                 return;
16917
16918         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16919         if (!hdr)
16920                 goto nla_put_failure;
16921
16922         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16923             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16924             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16925                 goto nla_put_failure;
16926
16927         if (!owe_info->ie_len ||
16928             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16929                 goto nla_put_failure;
16930
16931         genlmsg_end(msg, hdr);
16932
16933         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16934                                 NL80211_MCGRP_MLME, gfp);
16935         return;
16936
16937 nla_put_failure:
16938         genlmsg_cancel(msg, hdr);
16939         nlmsg_free(msg);
16940 }
16941 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16942
16943 /* initialisation/exit functions */
16944
16945 int __init nl80211_init(void)
16946 {
16947         int err;
16948
16949         err = genl_register_family(&nl80211_fam);
16950         if (err)
16951                 return err;
16952
16953         err = netlink_register_notifier(&nl80211_netlink_notifier);
16954         if (err)
16955                 goto err_out;
16956
16957         return 0;
16958  err_out:
16959         genl_unregister_family(&nl80211_fam);
16960         return err;
16961 }
16962
16963 void nl80211_exit(void)
16964 {
16965         netlink_unregister_notifier(&nl80211_netlink_notifier);
16966         genl_unregister_family(&nl80211_fam);
16967 }