contrib/wpa/src/drivers/driver_nl80211_capa.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211 - Capabilities
   3  * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright (c) 2009-2010, Atheros Communications
   6  *
   7  * This software may be distributed under the terms of the BSD license.
   8  * See README for more details.
   9  */
  10
  11 #include "includes.h"
  12 #include <netlink/genl/genl.h>
  13
  14 #include "utils/common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "common/qca-vendor.h"
  18 #include "common/qca-vendor-attr.h"
  19 #include "driver_nl80211.h"
  20
  21
  22 static int protocol_feature_handler(struct nl_msg *msg, void *arg)
  23 {
  24         u32 *feat = arg;
  25         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
  26         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
  27
  28         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
  29                   genlmsg_attrlen(gnlh, 0), NULL);
  30
  31         if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES])
  32                 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
  33
  34         return NL_SKIP;
  35 }
  36
  37
  38 static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv)
  39 {
  40         u32 feat = 0;
  41         struct nl_msg *msg;
  42
  43         msg = nlmsg_alloc();
  44         if (!msg)
  45                 return 0;
  46
  47         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES)) {
  48                 nlmsg_free(msg);
  49                 return 0;
  50         }
  51
  52         if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0)
  53                 return feat;
  54
  55         return 0;
  56 }
  57
  58
  59 struct wiphy_info_data {
  60         struct wpa_driver_nl80211_data *drv;
  61         struct wpa_driver_capa *capa;
  62
  63         unsigned int num_multichan_concurrent;
  64
  65         unsigned int error:1;
  66         unsigned int device_ap_sme:1;
  67         unsigned int poll_command_supported:1;
  68         unsigned int data_tx_status:1;
  69         unsigned int monitor_supported:1;
  70         unsigned int auth_supported:1;
  71         unsigned int connect_supported:1;
  72         unsigned int p2p_go_supported:1;
  73         unsigned int p2p_client_supported:1;
  74         unsigned int p2p_go_ctwindow_supported:1;
  75         unsigned int p2p_concurrent:1;
  76         unsigned int channel_switch_supported:1;
  77         unsigned int set_qos_map_supported:1;
  78         unsigned int have_low_prio_scan:1;
  79         unsigned int wmm_ac_supported:1;
  80         unsigned int mac_addr_rand_scan_supported:1;
  81         unsigned int mac_addr_rand_sched_scan_supported:1;
  82 };
  83
  84
  85 static unsigned int probe_resp_offload_support(int supp_protocols)
  86 {
  87         unsigned int prot = 0;
  88
  89         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
  90                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
  91         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
  92                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
  93         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
  94                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
  95         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
  96                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
  97
  98         return prot;
  99 }
 100
 101
 102 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
 103                                          struct nlattr *tb)
 104 {
 105         struct nlattr *nl_mode;
 106         int i;
 107
 108         if (tb == NULL)
 109                 return;
 110
 111         nla_for_each_nested(nl_mode, tb, i) {
 112                 switch (nla_type(nl_mode)) {
 113                 case NL80211_IFTYPE_AP:
 114                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
 115                         break;
 116                 case NL80211_IFTYPE_MESH_POINT:
 117                         info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
 118                         break;
 119                 case NL80211_IFTYPE_ADHOC:
 120                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
 121                         break;
 122                 case NL80211_IFTYPE_P2P_DEVICE:
 123                         info->capa->flags |=
 124                                 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
 125                         break;
 126                 case NL80211_IFTYPE_P2P_GO:
 127                         info->p2p_go_supported = 1;
 128                         break;
 129                 case NL80211_IFTYPE_P2P_CLIENT:
 130                         info->p2p_client_supported = 1;
 131                         break;
 132                 case NL80211_IFTYPE_MONITOR:
 133                         info->monitor_supported = 1;
 134                         break;
 135                 }
 136         }
 137 }
 138
 139
 140 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
 141                                          struct nlattr *nl_combi)
 142 {
 143         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
 144         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
 145         struct nlattr *nl_limit, *nl_mode;
 146         int err, rem_limit, rem_mode;
 147         int combination_has_p2p = 0, combination_has_mgd = 0;
 148         static struct nla_policy
 149         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
 150                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
 151                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
 152                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
 153                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
 154                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
 155         },
 156         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
 157                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
 158                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
 159         };
 160
 161         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
 162                                nl_combi, iface_combination_policy);
 163         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
 164             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
 165             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
 166                 return 0; /* broken combination */
 167
 168         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
 169                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
 170
 171         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
 172                             rem_limit) {
 173                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
 174                                        nl_limit, iface_limit_policy);
 175                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
 176                         return 0; /* broken combination */
 177
 178                 nla_for_each_nested(nl_mode,
 179                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
 180                                     rem_mode) {
 181                         int ift = nla_type(nl_mode);
 182                         if (ift == NL80211_IFTYPE_P2P_GO ||
 183                             ift == NL80211_IFTYPE_P2P_CLIENT)
 184                                 combination_has_p2p = 1;
 185                         if (ift == NL80211_IFTYPE_STATION)
 186                                 combination_has_mgd = 1;
 187                 }
 188                 if (combination_has_p2p && combination_has_mgd)
 189                         break;
 190         }
 191
 192         if (combination_has_p2p && combination_has_mgd) {
 193                 unsigned int num_channels =
 194                         nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
 195
 196                 info->p2p_concurrent = 1;
 197                 if (info->num_multichan_concurrent < num_channels)
 198                         info->num_multichan_concurrent = num_channels;
 199         }
 200
 201         return 0;
 202 }
 203
 204
 205 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
 206                                   struct nlattr *tb)
 207 {
 208         struct nlattr *nl_combi;
 209         int rem_combi;
 210
 211         if (tb == NULL)
 212                 return;
 213
 214         nla_for_each_nested(nl_combi, tb, rem_combi) {
 215                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
 216                         break;
 217         }
 218 }
 219
 220
 221 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
 222                                  struct nlattr *tb)
 223 {
 224         struct nlattr *nl_cmd;
 225         int i;
 226
 227         if (tb == NULL)
 228                 return;
 229
 230         nla_for_each_nested(nl_cmd, tb, i) {
 231                 switch (nla_get_u32(nl_cmd)) {
 232                 case NL80211_CMD_AUTHENTICATE:
 233                         info->auth_supported = 1;
 234                         break;
 235                 case NL80211_CMD_CONNECT:
 236                         info->connect_supported = 1;
 237                         break;
 238                 case NL80211_CMD_START_SCHED_SCAN:
 239                         info->capa->sched_scan_supported = 1;
 240                         break;
 241                 case NL80211_CMD_PROBE_CLIENT:
 242                         info->poll_command_supported = 1;
 243                         break;
 244                 case NL80211_CMD_CHANNEL_SWITCH:
 245                         info->channel_switch_supported = 1;
 246                         break;
 247                 case NL80211_CMD_SET_QOS_MAP:
 248                         info->set_qos_map_supported = 1;
 249                         break;
 250                 }
 251         }
 252 }
 253
 254
 255 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
 256                                      struct nlattr *tb)
 257 {
 258         int i, num;
 259         u32 *ciphers;
 260
 261         if (tb == NULL)
 262                 return;
 263
 264         num = nla_len(tb) / sizeof(u32);
 265         ciphers = nla_data(tb);
 266         for (i = 0; i < num; i++) {
 267                 u32 c = ciphers[i];
 268
 269                 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
 270                            c >> 24, (c >> 16) & 0xff,
 271                            (c >> 8) & 0xff, c & 0xff);
 272                 switch (c) {
 273                 case WLAN_CIPHER_SUITE_CCMP_256:
 274                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
 275                         break;
 276                 case WLAN_CIPHER_SUITE_GCMP_256:
 277                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
 278                         break;
 279                 case WLAN_CIPHER_SUITE_CCMP:
 280                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
 281                         break;
 282                 case WLAN_CIPHER_SUITE_GCMP:
 283                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
 284                         break;
 285                 case WLAN_CIPHER_SUITE_TKIP:
 286                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
 287                         break;
 288                 case WLAN_CIPHER_SUITE_WEP104:
 289                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
 290                         break;
 291                 case WLAN_CIPHER_SUITE_WEP40:
 292                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
 293                         break;
 294                 case WLAN_CIPHER_SUITE_AES_CMAC:
 295                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
 296                         break;
 297                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 298                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
 299                         break;
 300                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 301                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
 302                         break;
 303                 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 304                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
 305                         break;
 306                 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
 307                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
 308                         break;
 309                 }
 310         }
 311 }
 312
 313
 314 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
 315                                struct nlattr *tb)
 316 {
 317         if (tb)
 318                 capa->max_remain_on_chan = nla_get_u32(tb);
 319 }
 320
 321
 322 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
 323                             struct nlattr *ext_setup)
 324 {
 325         if (tdls == NULL)
 326                 return;
 327
 328         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
 329         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
 330
 331         if (ext_setup) {
 332                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
 333                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
 334         }
 335 }
 336
 337
 338 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
 339                                      struct nlattr *tb)
 340 {
 341         u32 flags;
 342         struct wpa_driver_capa *capa = info->capa;
 343
 344         if (tb == NULL)
 345                 return;
 346
 347         flags = nla_get_u32(tb);
 348
 349         if (flags & NL80211_FEATURE_SK_TX_STATUS)
 350                 info->data_tx_status = 1;
 351
 352         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
 353                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
 354
 355         if (flags & NL80211_FEATURE_SAE)
 356                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
 357
 358         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
 359                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
 360
 361         if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
 362                 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
 363
 364         if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) {
 365                 wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch");
 366                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH;
 367         }
 368
 369         if (flags & NL80211_FEATURE_P2P_GO_CTWIN)
 370                 info->p2p_go_ctwindow_supported = 1;
 371
 372         if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
 373                 info->have_low_prio_scan = 1;
 374
 375         if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)
 376                 info->mac_addr_rand_scan_supported = 1;
 377
 378         if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR)
 379                 info->mac_addr_rand_sched_scan_supported = 1;
 380
 381         if (flags & NL80211_FEATURE_STATIC_SMPS)
 382                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
 383
 384         if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
 385                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
 386
 387         if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
 388                 info->wmm_ac_supported = 1;
 389
 390         if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
 391                 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
 392
 393         if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
 394                 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
 395
 396         if (flags & NL80211_FEATURE_QUIET)
 397                 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
 398
 399         if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
 400                 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
 401
 402         if (flags & NL80211_FEATURE_HT_IBSS)
 403                 capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS;
 404 }
 405
 406
 407 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
 408                                           struct nlattr *tb)
 409 {
 410         u32 protocols;
 411
 412         if (tb == NULL)
 413                 return;
 414
 415         protocols = nla_get_u32(tb);
 416         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
 417                    "mode");
 418         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
 419         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
 420 }
 421
 422
 423 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
 424                                        struct nlattr *tb)
 425 {
 426         struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
 427
 428         if (tb == NULL)
 429                 return;
 430
 431         if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
 432                              tb, NULL))
 433                 return;
 434
 435         if (triggers[NL80211_WOWLAN_TRIG_ANY])
 436                 capa->wowlan_triggers.any = 1;
 437         if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
 438                 capa->wowlan_triggers.disconnect = 1;
 439         if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
 440                 capa->wowlan_triggers.magic_pkt = 1;
 441         if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
 442                 capa->wowlan_triggers.gtk_rekey_failure = 1;
 443         if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
 444                 capa->wowlan_triggers.eap_identity_req = 1;
 445         if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
 446                 capa->wowlan_triggers.four_way_handshake = 1;
 447         if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
 448                 capa->wowlan_triggers.rfkill_release = 1;
 449 }
 450
 451
 452 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
 453 {
 454         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 455         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 456         struct wiphy_info_data *info = arg;
 457         struct wpa_driver_capa *capa = info->capa;
 458         struct wpa_driver_nl80211_data *drv = info->drv;
 459
 460         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 461                   genlmsg_attrlen(gnlh, 0), NULL);
 462
 463         if (tb[NL80211_ATTR_WIPHY_NAME])
 464                 os_strlcpy(drv->phyname,
 465                            nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
 466                            sizeof(drv->phyname));
 467         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
 468                 capa->max_scan_ssids =
 469                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
 470
 471         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
 472                 capa->max_sched_scan_ssids =
 473                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
 474
 475         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
 476                 capa->max_match_sets =
 477                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
 478
 479         if (tb[NL80211_ATTR_MAC_ACL_MAX])
 480                 capa->max_acl_mac_addrs =
 481                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
 482
 483         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
 484         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
 485         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
 486         wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
 487
 488         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
 489                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
 490                            "off-channel TX");
 491                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
 492         }
 493
 494         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
 495                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
 496                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
 497         }
 498
 499         wiphy_info_max_roc(capa,
 500                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
 501
 502         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
 503                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
 504
 505         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
 506                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
 507
 508         if (tb[NL80211_ATTR_DEVICE_AP_SME])
 509                 info->device_ap_sme = 1;
 510
 511         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
 512         wiphy_info_probe_resp_offload(capa,
 513                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
 514
 515         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
 516             drv->extended_capa == NULL) {
 517                 drv->extended_capa =
 518                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 519                 if (drv->extended_capa) {
 520                         os_memcpy(drv->extended_capa,
 521                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 522                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 523                         drv->extended_capa_len =
 524                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
 525                 }
 526                 drv->extended_capa_mask =
 527                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK]));
 528                 if (drv->extended_capa_mask) {
 529                         os_memcpy(drv->extended_capa_mask,
 530                                   nla_data(tb[NL80211_ATTR_EXT_CAPA_MASK]),
 531                                   nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK]));
 532                 } else {
 533                         os_free(drv->extended_capa);
 534                         drv->extended_capa = NULL;
 535                         drv->extended_capa_len = 0;
 536                 }
 537         }
 538
 539         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 540                 struct nlattr *nl;
 541                 int rem;
 542
 543                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
 544                         struct nl80211_vendor_cmd_info *vinfo;
 545                         if (nla_len(nl) != sizeof(*vinfo)) {
 546                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 547                                 continue;
 548                         }
 549                         vinfo = nla_data(nl);
 550                         switch (vinfo->subcmd) {
 551                         case QCA_NL80211_VENDOR_SUBCMD_TEST:
 552                                 drv->vendor_cmd_test_avail = 1;
 553                                 break;
 554                         case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
 555                                 drv->roaming_vendor_cmd_avail = 1;
 556                                 break;
 557                         case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
 558                                 drv->dfs_vendor_cmd_avail = 1;
 559                                 break;
 560                         case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES:
 561                                 drv->get_features_vendor_cmd_avail = 1;
 562                                 break;
 563                         case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
 564                                 drv->capa.flags |= WPA_DRIVER_FLAGS_ACS_OFFLOAD;
 565                                 break;
 566                         }
 567
 568                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
 569                                    vinfo->vendor_id, vinfo->subcmd);
 570                 }
 571         }
 572
 573         if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
 574                 struct nlattr *nl;
 575                 int rem;
 576
 577                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
 578                         struct nl80211_vendor_cmd_info *vinfo;
 579                         if (nla_len(nl) != sizeof(*vinfo)) {
 580                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 581                                 continue;
 582                         }
 583                         vinfo = nla_data(nl);
 584                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
 585                                    vinfo->vendor_id, vinfo->subcmd);
 586                 }
 587         }
 588
 589         wiphy_info_wowlan_triggers(capa,
 590                                    tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
 591
 592         if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
 593                 capa->max_stations =
 594                         nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
 595
 596         return NL_SKIP;
 597 }
 598
 599
 600 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
 601                                        struct wiphy_info_data *info)
 602 {
 603         u32 feat;
 604         struct nl_msg *msg;
 605         int flags = 0;
 606
 607         os_memset(info, 0, sizeof(*info));
 608         info->capa = &drv->capa;
 609         info->drv = drv;
 610
 611         feat = get_nl80211_protocol_features(drv);
 612         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
 613                 flags = NLM_F_DUMP;
 614         msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
 615         if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
 616                 nlmsg_free(msg);
 617                 return -1;
 618         }
 619
 620         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
 621                 return -1;
 622
 623         if (info->auth_supported)
 624                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
 625         else if (!info->connect_supported) {
 626                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
 627                            "authentication/association or connect commands");
 628                 info->error = 1;
 629         }
 630
 631         if (info->p2p_go_supported && info->p2p_client_supported)
 632                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
 633         if (info->p2p_concurrent) {
 634                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
 635                            "interface (driver advertised support)");
 636                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
 637                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
 638         }
 639         if (info->num_multichan_concurrent > 1) {
 640                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
 641                            "concurrent (driver advertised support)");
 642                 drv->capa.num_multichan_concurrent =
 643                         info->num_multichan_concurrent;
 644         }
 645         if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
 646                 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
 647
 648         /* default to 5000 since early versions of mac80211 don't set it */
 649         if (!drv->capa.max_remain_on_chan)
 650                 drv->capa.max_remain_on_chan = 5000;
 651
 652         if (info->channel_switch_supported)
 653                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
 654         drv->capa.wmm_ac_supported = info->wmm_ac_supported;
 655
 656         drv->capa.mac_addr_rand_sched_scan_supported =
 657                 info->mac_addr_rand_sched_scan_supported;
 658         drv->capa.mac_addr_rand_scan_supported =
 659                 info->mac_addr_rand_scan_supported;
 660
 661         return 0;
 662 }
 663
 664
 665 static int dfs_info_handler(struct nl_msg *msg, void *arg)
 666 {
 667         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 668         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 669         int *dfs_capability_ptr = arg;
 670
 671         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 672                   genlmsg_attrlen(gnlh, 0), NULL);
 673
 674         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 675                 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 676                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 677
 678                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 679                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 680
 681                 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
 682                         u32 val;
 683                         val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
 684                         wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
 685                                    val);
 686                         *dfs_capability_ptr = val;
 687                 }
 688         }
 689
 690         return NL_SKIP;
 691 }
 692
 693
 694 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
 695 {
 696         struct nl_msg *msg;
 697         int dfs_capability = 0;
 698         int ret;
 699
 700         if (!drv->dfs_vendor_cmd_avail)
 701                 return;
 702
 703         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 704             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 705             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 706                         QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
 707                 nlmsg_free(msg);
 708                 return;
 709         }
 710
 711         ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
 712         if (!ret && dfs_capability)
 713                 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
 714 }
 715
 716
 717 struct features_info {
 718         u8 *flags;
 719         size_t flags_len;
 720 };
 721
 722
 723 static int features_info_handler(struct nl_msg *msg, void *arg)
 724 {
 725         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 726         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 727         struct features_info *info = arg;
 728         struct nlattr *nl_vend, *attr;
 729
 730         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 731                   genlmsg_attrlen(gnlh, 0), NULL);
 732
 733         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 734         if (nl_vend) {
 735                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 736
 737                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 738                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 739
 740                 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS];
 741                 if (attr) {
 742                         info->flags = nla_data(attr);
 743                         info->flags_len = nla_len(attr);
 744                 }
 745         }
 746
 747         return NL_SKIP;
 748 }
 749
 750
 751 static int check_feature(enum qca_wlan_vendor_features feature,
 752                          struct features_info *info)
 753 {
 754         size_t idx = feature / 8;
 755
 756         return (idx < info->flags_len) &&
 757                 (info->flags[idx] & BIT(feature % 8));
 758 }
 759
 760
 761 static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv)
 762 {
 763         struct nl_msg *msg;
 764         struct features_info info;
 765         int ret;
 766
 767         if (!drv->get_features_vendor_cmd_avail)
 768                 return;
 769
 770         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 771             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 772             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 773                         QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) {
 774                 nlmsg_free(msg);
 775                 return;
 776         }
 777
 778         os_memset(&info, 0, sizeof(info));
 779         ret = send_and_recv_msgs(drv, msg, features_info_handler, &info);
 780         if (ret || !info.flags)
 781                 return;
 782
 783         if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info))
 784                 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD;
 785 }
 786
 787
 788 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 789 {
 790         struct wiphy_info_data info;
 791         if (wpa_driver_nl80211_get_info(drv, &info))
 792                 return -1;
 793
 794         if (info.error)
 795                 return -1;
 796
 797         drv->has_capability = 1;
 798         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
 799                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
 800                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
 801                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK |
 802                 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B |
 803                 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192;
 804         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
 805                 WPA_DRIVER_AUTH_SHARED |
 806                 WPA_DRIVER_AUTH_LEAP;
 807
 808         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
 809         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
 810         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 811
 812         /*
 813          * As all cfg80211 drivers must support cases where the AP interface is
 814          * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
 815          * case that the user space daemon has crashed, they must be able to
 816          * cleanup all stations and key entries in the AP tear down flow. Thus,
 817          * this flag can/should always be set for cfg80211 drivers.
 818          */
 819         drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
 820
 821         if (!info.device_ap_sme) {
 822                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
 823
 824                 /*
 825                  * No AP SME is currently assumed to also indicate no AP MLME
 826                  * in the driver/firmware.
 827                  */
 828                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
 829         }
 830
 831         drv->device_ap_sme = info.device_ap_sme;
 832         drv->poll_command_supported = info.poll_command_supported;
 833         drv->data_tx_status = info.data_tx_status;
 834         drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported;
 835         if (info.set_qos_map_supported)
 836                 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 837         drv->have_low_prio_scan = info.have_low_prio_scan;
 838
 839         /*
 840          * If poll command and tx status are supported, mac80211 is new enough
 841          * to have everything we need to not need monitor interfaces.
 842          */
 843         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
 844
 845         if (drv->device_ap_sme && drv->use_monitor) {
 846                 /*
 847                  * Non-mac80211 drivers may not support monitor interface.
 848                  * Make sure we do not get stuck with incorrect capability here
 849                  * by explicitly testing this.
 850                  */
 851                 if (!info.monitor_supported) {
 852                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
 853                                    "with device_ap_sme since no monitor mode "
 854                                    "support detected");
 855                         drv->use_monitor = 0;
 856                 }
 857         }
 858
 859         /*
 860          * If we aren't going to use monitor interfaces, but the
 861          * driver doesn't support data TX status, we won't get TX
 862          * status for EAPOL frames.
 863          */
 864         if (!drv->use_monitor && !info.data_tx_status)
 865                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 866
 867         qca_nl80211_check_dfs_capa(drv);
 868         qca_nl80211_get_features(drv);
 869
 870         return 0;
 871 }
 872
 873
 874 struct phy_info_arg {
 875         u16 *num_modes;
 876         struct hostapd_hw_modes *modes;
 877         int last_mode, last_chan_idx;
 878 };
 879
 880 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
 881                              struct nlattr *ampdu_factor,
 882                              struct nlattr *ampdu_density,
 883                              struct nlattr *mcs_set)
 884 {
 885         if (capa)
 886                 mode->ht_capab = nla_get_u16(capa);
 887
 888         if (ampdu_factor)
 889                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
 890
 891         if (ampdu_density)
 892                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
 893
 894         if (mcs_set && nla_len(mcs_set) >= 16) {
 895                 u8 *mcs;
 896                 mcs = nla_data(mcs_set);
 897                 os_memcpy(mode->mcs_set, mcs, 16);
 898         }
 899 }
 900
 901
 902 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
 903                               struct nlattr *capa,
 904                               struct nlattr *mcs_set)
 905 {
 906         if (capa)
 907                 mode->vht_capab = nla_get_u32(capa);
 908
 909         if (mcs_set && nla_len(mcs_set) >= 8) {
 910                 u8 *mcs;
 911                 mcs = nla_data(mcs_set);
 912                 os_memcpy(mode->vht_mcs_set, mcs, 8);
 913         }
 914 }
 915
 916
 917 static void phy_info_freq(struct hostapd_hw_modes *mode,
 918                           struct hostapd_channel_data *chan,
 919                           struct nlattr *tb_freq[])
 920 {
 921         u8 channel;
 922         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
 923         chan->flag = 0;
 924         chan->dfs_cac_ms = 0;
 925         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
 926                 chan->chan = channel;
 927
 928         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
 929                 chan->flag |= HOSTAPD_CHAN_DISABLED;
 930         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
 931                 chan->flag |= HOSTAPD_CHAN_NO_IR;
 932         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
 933                 chan->flag |= HOSTAPD_CHAN_RADAR;
 934         if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
 935                 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
 936         if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
 937                 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
 938
 939         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
 940                 enum nl80211_dfs_state state =
 941                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
 942
 943                 switch (state) {
 944                 case NL80211_DFS_USABLE:
 945                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
 946                         break;
 947                 case NL80211_DFS_AVAILABLE:
 948                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
 949                         break;
 950                 case NL80211_DFS_UNAVAILABLE:
 951                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
 952                         break;
 953                 }
 954         }
 955
 956         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
 957                 chan->dfs_cac_ms = nla_get_u32(
 958                         tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
 959         }
 960 }
 961
 962
 963 static int phy_info_freqs(struct phy_info_arg *phy_info,
 964                           struct hostapd_hw_modes *mode, struct nlattr *tb)
 965 {
 966         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
 967                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
 968                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
 969                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
 970                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
 971                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
 972                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
 973         };
 974         int new_channels = 0;
 975         struct hostapd_channel_data *channel;
 976         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
 977         struct nlattr *nl_freq;
 978         int rem_freq, idx;
 979
 980         if (tb == NULL)
 981                 return NL_OK;
 982
 983         nla_for_each_nested(nl_freq, tb, rem_freq) {
 984                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 985                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 986                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 987                         continue;
 988                 new_channels++;
 989         }
 990
 991         channel = os_realloc_array(mode->channels,
 992                                    mode->num_channels + new_channels,
 993                                    sizeof(struct hostapd_channel_data));
 994         if (!channel)
 995                 return NL_SKIP;
 996
 997         mode->channels = channel;
 998         mode->num_channels += new_channels;
 999
1000         idx = phy_info->last_chan_idx;
1001
1002         nla_for_each_nested(nl_freq, tb, rem_freq) {
1003                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
1004                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
1005                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1006                         continue;
1007                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
1008                 idx++;
1009         }
1010         phy_info->last_chan_idx = idx;
1011
1012         return NL_OK;
1013 }
1014
1015
1016 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
1017 {
1018         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1019                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1020                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
1021                 { .type = NLA_FLAG },
1022         };
1023         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1024         struct nlattr *nl_rate;
1025         int rem_rate, idx;
1026
1027         if (tb == NULL)
1028                 return NL_OK;
1029
1030         nla_for_each_nested(nl_rate, tb, rem_rate) {
1031                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1032                           nla_data(nl_rate), nla_len(nl_rate),
1033                           rate_policy);
1034                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1035                         continue;
1036                 mode->num_rates++;
1037         }
1038
1039         mode->rates = os_calloc(mode->num_rates, sizeof(int));
1040         if (!mode->rates)
1041                 return NL_SKIP;
1042
1043         idx = 0;
1044
1045         nla_for_each_nested(nl_rate, tb, rem_rate) {
1046                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1047                           nla_data(nl_rate), nla_len(nl_rate),
1048                           rate_policy);
1049                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1050                         continue;
1051                 mode->rates[idx] = nla_get_u32(
1052                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
1053                 idx++;
1054         }
1055
1056         return NL_OK;
1057 }
1058
1059
1060 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
1061 {
1062         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1063         struct hostapd_hw_modes *mode;
1064         int ret;
1065
1066         if (phy_info->last_mode != nl_band->nla_type) {
1067                 mode = os_realloc_array(phy_info->modes,
1068                                         *phy_info->num_modes + 1,
1069                                         sizeof(*mode));
1070                 if (!mode)
1071                         return NL_SKIP;
1072                 phy_info->modes = mode;
1073
1074                 mode = &phy_info->modes[*(phy_info->num_modes)];
1075                 os_memset(mode, 0, sizeof(*mode));
1076                 mode->mode = NUM_HOSTAPD_MODES;
1077                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
1078                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
1079
1080                 /*
1081                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
1082                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
1083                  * possible streams as unsupported. This will be overridden if
1084                  * driver advertises VHT support.
1085                  */
1086                 mode->vht_mcs_set[0] = 0xff;
1087                 mode->vht_mcs_set[1] = 0xff;
1088                 mode->vht_mcs_set[4] = 0xff;
1089                 mode->vht_mcs_set[5] = 0xff;
1090
1091                 *(phy_info->num_modes) += 1;
1092                 phy_info->last_mode = nl_band->nla_type;
1093                 phy_info->last_chan_idx = 0;
1094         } else
1095                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
1096
1097         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1098                   nla_len(nl_band), NULL);
1099
1100         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1101                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1102                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1103                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1104         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1105                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1106         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1107         if (ret != NL_OK)
1108                 return ret;
1109         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1110         if (ret != NL_OK)
1111                 return ret;
1112
1113         return NL_OK;
1114 }
1115
1116
1117 static int phy_info_handler(struct nl_msg *msg, void *arg)
1118 {
1119         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1120         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1121         struct phy_info_arg *phy_info = arg;
1122         struct nlattr *nl_band;
1123         int rem_band;
1124
1125         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1126                   genlmsg_attrlen(gnlh, 0), NULL);
1127
1128         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1129                 return NL_SKIP;
1130
1131         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1132         {
1133                 int res = phy_info_band(phy_info, nl_band);
1134                 if (res != NL_OK)
1135                         return res;
1136         }
1137
1138         return NL_SKIP;
1139 }
1140
1141
1142 static struct hostapd_hw_modes *
1143 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1144                                      u16 *num_modes)
1145 {
1146         u16 m;
1147         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1148         int i, mode11g_idx = -1;
1149
1150         /* heuristic to set up modes */
1151         for (m = 0; m < *num_modes; m++) {
1152                 if (!modes[m].num_channels)
1153                         continue;
1154                 if (modes[m].channels[0].freq < 4000) {
1155                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1156                         for (i = 0; i < modes[m].num_rates; i++) {
1157                                 if (modes[m].rates[i] > 200) {
1158                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1159                                         break;
1160                                 }
1161                         }
1162                 } else if (modes[m].channels[0].freq > 50000)
1163                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1164                 else
1165                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1166         }
1167
1168         /* If only 802.11g mode is included, use it to construct matching
1169          * 802.11b mode data. */
1170
1171         for (m = 0; m < *num_modes; m++) {
1172                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1173                         return modes; /* 802.11b already included */
1174                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1175                         mode11g_idx = m;
1176         }
1177
1178         if (mode11g_idx < 0)
1179                 return modes; /* 2.4 GHz band not supported at all */
1180
1181         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1182         if (nmodes == NULL)
1183                 return modes; /* Could not add 802.11b mode */
1184
1185         mode = &nmodes[*num_modes];
1186         os_memset(mode, 0, sizeof(*mode));
1187         (*num_modes)++;
1188         modes = nmodes;
1189
1190         mode->mode = HOSTAPD_MODE_IEEE80211B;
1191
1192         mode11g = &modes[mode11g_idx];
1193         mode->num_channels = mode11g->num_channels;
1194         mode->channels = os_malloc(mode11g->num_channels *
1195                                    sizeof(struct hostapd_channel_data));
1196         if (mode->channels == NULL) {
1197                 (*num_modes)--;
1198                 return modes; /* Could not add 802.11b mode */
1199         }
1200         os_memcpy(mode->channels, mode11g->channels,
1201                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1202
1203         mode->num_rates = 0;
1204         mode->rates = os_malloc(4 * sizeof(int));
1205         if (mode->rates == NULL) {
1206                 os_free(mode->channels);
1207                 (*num_modes)--;
1208                 return modes; /* Could not add 802.11b mode */
1209         }
1210
1211         for (i = 0; i < mode11g->num_rates; i++) {
1212                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1213                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1214                         continue;
1215                 mode->rates[mode->num_rates] = mode11g->rates[i];
1216                 mode->num_rates++;
1217                 if (mode->num_rates == 4)
1218                         break;
1219         }
1220
1221         if (mode->num_rates == 0) {
1222                 os_free(mode->channels);
1223                 os_free(mode->rates);
1224                 (*num_modes)--;
1225                 return modes; /* No 802.11b rates */
1226         }
1227
1228         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1229                    "information");
1230
1231         return modes;
1232 }
1233
1234
1235 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1236                                   int end)
1237 {
1238         int c;
1239
1240         for (c = 0; c < mode->num_channels; c++) {
1241                 struct hostapd_channel_data *chan = &mode->channels[c];
1242                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1243                         chan->flag |= HOSTAPD_CHAN_HT40;
1244         }
1245 }
1246
1247
1248 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1249                                       int end)
1250 {
1251         int c;
1252
1253         for (c = 0; c < mode->num_channels; c++) {
1254                 struct hostapd_channel_data *chan = &mode->channels[c];
1255                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1256                         continue;
1257                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1258                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1259                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1260                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1261         }
1262 }
1263
1264
1265 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1266                                       struct phy_info_arg *results)
1267 {
1268         u16 m;
1269
1270         for (m = 0; m < *results->num_modes; m++) {
1271                 int c;
1272                 struct hostapd_hw_modes *mode = &results->modes[m];
1273
1274                 for (c = 0; c < mode->num_channels; c++) {
1275                         struct hostapd_channel_data *chan = &mode->channels[c];
1276                         if ((u32) chan->freq - 10 >= start &&
1277                             (u32) chan->freq + 10 <= end)
1278                                 chan->max_tx_power = max_eirp;
1279                 }
1280         }
1281 }
1282
1283
1284 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1285                                   struct phy_info_arg *results)
1286 {
1287         u16 m;
1288
1289         for (m = 0; m < *results->num_modes; m++) {
1290                 if (!(results->modes[m].ht_capab &
1291                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1292                         continue;
1293                 nl80211_set_ht40_mode(&results->modes[m], start, end);
1294         }
1295 }
1296
1297
1298 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1299                                  struct phy_info_arg *results)
1300 {
1301         u32 start, end, max_bw;
1302         u16 m;
1303
1304         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1305             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1306             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1307                 return;
1308
1309         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1310         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1311         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1312
1313         if (max_bw < 20)
1314                 return;
1315
1316         for (m = 0; m < *results->num_modes; m++) {
1317                 if (!(results->modes[m].ht_capab &
1318                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1319                         continue;
1320                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1321         }
1322 }
1323
1324
1325 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1326                                  int end)
1327 {
1328         int c;
1329
1330         for (c = 0; c < mode->num_channels; c++) {
1331                 struct hostapd_channel_data *chan = &mode->channels[c];
1332                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1333                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1334
1335                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1336                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1337
1338                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1339                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1340
1341                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1342                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1343         }
1344 }
1345
1346
1347 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1348                                  struct phy_info_arg *results)
1349 {
1350         u32 start, end, max_bw;
1351         u16 m;
1352
1353         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1354             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1355             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1356                 return;
1357
1358         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1359         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1360         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1361
1362         if (max_bw < 80)
1363                 return;
1364
1365         for (m = 0; m < *results->num_modes; m++) {
1366                 if (!(results->modes[m].ht_capab &
1367                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1368                         continue;
1369                 /* TODO: use a real VHT support indication */
1370                 if (!results->modes[m].vht_capab)
1371                         continue;
1372
1373                 nl80211_set_vht_mode(&results->modes[m], start, end);
1374         }
1375 }
1376
1377
1378 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1379 {
1380         switch (region) {
1381         case NL80211_DFS_UNSET:
1382                 return "DFS-UNSET";
1383         case NL80211_DFS_FCC:
1384                 return "DFS-FCC";
1385         case NL80211_DFS_ETSI:
1386                 return "DFS-ETSI";
1387         case NL80211_DFS_JP:
1388                 return "DFS-JP";
1389         default:
1390                 return "DFS-invalid";
1391         }
1392 }
1393
1394
1395 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1396 {
1397         struct phy_info_arg *results = arg;
1398         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1399         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1400         struct nlattr *nl_rule;
1401         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1402         int rem_rule;
1403         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1404                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1405                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1406                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1407                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1408                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1409                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1410         };
1411
1412         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1413                   genlmsg_attrlen(gnlh, 0), NULL);
1414         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1415             !tb_msg[NL80211_ATTR_REG_RULES]) {
1416                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1417                            "available");
1418                 return NL_SKIP;
1419         }
1420
1421         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1422                 enum nl80211_dfs_regions dfs_domain;
1423                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1424                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1425                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1426                            dfs_domain_name(dfs_domain));
1427         } else {
1428                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1429                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1430         }
1431
1432         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1433         {
1434                 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1435                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1436                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1437                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1438                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1439                         continue;
1440                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1441                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1442                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1443                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1444                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1445                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1446                 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1447                         flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1448
1449                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1450                            start, end, max_bw, max_eirp,
1451                            flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1452                            flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1453                            flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1454                            flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1455                            "",
1456                            flags & NL80211_RRF_DFS ? " (DFS)" : "",
1457                            flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1458                            flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1459                            flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1460                 if (max_bw >= 40)
1461                         nl80211_reg_rule_ht40(start, end, results);
1462                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1463                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
1464                                                   results);
1465         }
1466
1467         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1468         {
1469                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1470                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1471                 nl80211_reg_rule_sec(tb_rule, results);
1472         }
1473
1474         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1475         {
1476                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1477                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1478                 nl80211_reg_rule_vht(tb_rule, results);
1479         }
1480
1481         return NL_SKIP;
1482 }
1483
1484
1485 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1486                                         struct phy_info_arg *results)
1487 {
1488         struct nl_msg *msg;
1489
1490         msg = nlmsg_alloc();
1491         if (!msg)
1492                 return -ENOMEM;
1493
1494         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1495         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1496 }
1497
1498
1499 struct hostapd_hw_modes *
1500 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1501 {
1502         u32 feat;
1503         struct i802_bss *bss = priv;
1504         struct wpa_driver_nl80211_data *drv = bss->drv;
1505         int nl_flags = 0;
1506         struct nl_msg *msg;
1507         struct phy_info_arg result = {
1508                 .num_modes = num_modes,
1509                 .modes = NULL,
1510                 .last_mode = -1,
1511         };
1512
1513         *num_modes = 0;
1514         *flags = 0;
1515
1516         feat = get_nl80211_protocol_features(drv);
1517         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1518                 nl_flags = NLM_F_DUMP;
1519         if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
1520             nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
1521                 nlmsg_free(msg);
1522                 return NULL;
1523         }
1524
1525         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1526                 nl80211_set_regulatory_flags(drv, &result);
1527                 return wpa_driver_nl80211_postprocess_modes(result.modes,
1528                                                             num_modes);
1529         }
1530
1531         return NULL;
1532 }