src/drivers/driver_nl80211_capa.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211 - Capabilities
   3  * Copyright (c) 2002-2014, 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_concurrent:1;
  75         unsigned int channel_switch_supported:1;
  76         unsigned int set_qos_map_supported:1;
  77         unsigned int have_low_prio_scan:1;
  78         unsigned int wmm_ac_supported:1;
  79         unsigned int mac_addr_rand_scan_supported:1;
  80         unsigned int mac_addr_rand_sched_scan_supported:1;
  81 };
  82
  83
  84 static unsigned int probe_resp_offload_support(int supp_protocols)
  85 {
  86         unsigned int prot = 0;
  87
  88         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
  89                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
  90         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
  91                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
  92         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
  93                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
  94         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
  95                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
  96
  97         return prot;
  98 }
  99
 100
 101 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
 102                                          struct nlattr *tb)
 103 {
 104         struct nlattr *nl_mode;
 105         int i;
 106
 107         if (tb == NULL)
 108                 return;
 109
 110         nla_for_each_nested(nl_mode, tb, i) {
 111                 switch (nla_type(nl_mode)) {
 112                 case NL80211_IFTYPE_AP:
 113                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
 114                         break;
 115                 case NL80211_IFTYPE_MESH_POINT:
 116                         info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
 117                         break;
 118                 case NL80211_IFTYPE_ADHOC:
 119                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
 120                         break;
 121                 case NL80211_IFTYPE_P2P_DEVICE:
 122                         info->capa->flags |=
 123                                 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
 124                         break;
 125                 case NL80211_IFTYPE_P2P_GO:
 126                         info->p2p_go_supported = 1;
 127                         break;
 128                 case NL80211_IFTYPE_P2P_CLIENT:
 129                         info->p2p_client_supported = 1;
 130                         break;
 131                 case NL80211_IFTYPE_MONITOR:
 132                         info->monitor_supported = 1;
 133                         break;
 134                 }
 135         }
 136 }
 137
 138
 139 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
 140                                          struct nlattr *nl_combi)
 141 {
 142         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
 143         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
 144         struct nlattr *nl_limit, *nl_mode;
 145         int err, rem_limit, rem_mode;
 146         int combination_has_p2p = 0, combination_has_mgd = 0;
 147         static struct nla_policy
 148         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
 149                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
 150                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
 151                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
 152                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
 153                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
 154         },
 155         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
 156                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
 157                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
 158         };
 159
 160         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
 161                                nl_combi, iface_combination_policy);
 162         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
 163             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
 164             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
 165                 return 0; /* broken combination */
 166
 167         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
 168                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
 169
 170         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
 171                             rem_limit) {
 172                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
 173                                        nl_limit, iface_limit_policy);
 174                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
 175                         return 0; /* broken combination */
 176
 177                 nla_for_each_nested(nl_mode,
 178                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
 179                                     rem_mode) {
 180                         int ift = nla_type(nl_mode);
 181                         if (ift == NL80211_IFTYPE_P2P_GO ||
 182                             ift == NL80211_IFTYPE_P2P_CLIENT)
 183                                 combination_has_p2p = 1;
 184                         if (ift == NL80211_IFTYPE_STATION)
 185                                 combination_has_mgd = 1;
 186                 }
 187                 if (combination_has_p2p && combination_has_mgd)
 188                         break;
 189         }
 190
 191         if (combination_has_p2p && combination_has_mgd) {
 192                 unsigned int num_channels =
 193                         nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
 194
 195                 info->p2p_concurrent = 1;
 196                 if (info->num_multichan_concurrent < num_channels)
 197                         info->num_multichan_concurrent = num_channels;
 198         }
 199
 200         return 0;
 201 }
 202
 203
 204 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
 205                                   struct nlattr *tb)
 206 {
 207         struct nlattr *nl_combi;
 208         int rem_combi;
 209
 210         if (tb == NULL)
 211                 return;
 212
 213         nla_for_each_nested(nl_combi, tb, rem_combi) {
 214                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
 215                         break;
 216         }
 217 }
 218
 219
 220 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
 221                                  struct nlattr *tb)
 222 {
 223         struct nlattr *nl_cmd;
 224         int i;
 225
 226         if (tb == NULL)
 227                 return;
 228
 229         nla_for_each_nested(nl_cmd, tb, i) {
 230                 switch (nla_get_u32(nl_cmd)) {
 231                 case NL80211_CMD_AUTHENTICATE:
 232                         info->auth_supported = 1;
 233                         break;
 234                 case NL80211_CMD_CONNECT:
 235                         info->connect_supported = 1;
 236                         break;
 237                 case NL80211_CMD_START_SCHED_SCAN:
 238                         info->capa->sched_scan_supported = 1;
 239                         break;
 240                 case NL80211_CMD_PROBE_CLIENT:
 241                         info->poll_command_supported = 1;
 242                         break;
 243                 case NL80211_CMD_CHANNEL_SWITCH:
 244                         info->channel_switch_supported = 1;
 245                         break;
 246                 case NL80211_CMD_SET_QOS_MAP:
 247                         info->set_qos_map_supported = 1;
 248                         break;
 249                 }
 250         }
 251 }
 252
 253
 254 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
 255                                      struct nlattr *tb)
 256 {
 257         int i, num;
 258         u32 *ciphers;
 259
 260         if (tb == NULL)
 261                 return;
 262
 263         num = nla_len(tb) / sizeof(u32);
 264         ciphers = nla_data(tb);
 265         for (i = 0; i < num; i++) {
 266                 u32 c = ciphers[i];
 267
 268                 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
 269                            c >> 24, (c >> 16) & 0xff,
 270                            (c >> 8) & 0xff, c & 0xff);
 271                 switch (c) {
 272                 case WLAN_CIPHER_SUITE_CCMP_256:
 273                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
 274                         break;
 275                 case WLAN_CIPHER_SUITE_GCMP_256:
 276                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
 277                         break;
 278                 case WLAN_CIPHER_SUITE_CCMP:
 279                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
 280                         break;
 281                 case WLAN_CIPHER_SUITE_GCMP:
 282                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
 283                         break;
 284                 case WLAN_CIPHER_SUITE_TKIP:
 285                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
 286                         break;
 287                 case WLAN_CIPHER_SUITE_WEP104:
 288                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
 289                         break;
 290                 case WLAN_CIPHER_SUITE_WEP40:
 291                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
 292                         break;
 293                 case WLAN_CIPHER_SUITE_AES_CMAC:
 294                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
 295                         break;
 296                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 297                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
 298                         break;
 299                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 300                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
 301                         break;
 302                 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 303                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
 304                         break;
 305                 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
 306                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
 307                         break;
 308                 }
 309         }
 310 }
 311
 312
 313 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
 314                                struct nlattr *tb)
 315 {
 316         if (tb)
 317                 capa->max_remain_on_chan = nla_get_u32(tb);
 318 }
 319
 320
 321 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
 322                             struct nlattr *ext_setup)
 323 {
 324         if (tdls == NULL)
 325                 return;
 326
 327         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
 328         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
 329
 330         if (ext_setup) {
 331                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
 332                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
 333         }
 334 }
 335
 336
 337 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
 338                                      struct nlattr *tb)
 339 {
 340         u32 flags;
 341         struct wpa_driver_capa *capa = info->capa;
 342
 343         if (tb == NULL)
 344                 return;
 345
 346         flags = nla_get_u32(tb);
 347
 348         if (flags & NL80211_FEATURE_SK_TX_STATUS)
 349                 info->data_tx_status = 1;
 350
 351         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
 352                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
 353
 354         if (flags & NL80211_FEATURE_SAE)
 355                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
 356
 357         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
 358                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
 359
 360         if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
 361                 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
 362
 363         if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) {
 364                 wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch");
 365                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH;
 366         }
 367
 368         if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
 369                 info->have_low_prio_scan = 1;
 370
 371         if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)
 372                 info->mac_addr_rand_scan_supported = 1;
 373
 374         if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR)
 375                 info->mac_addr_rand_sched_scan_supported = 1;
 376
 377         if (flags & NL80211_FEATURE_STATIC_SMPS)
 378                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
 379
 380         if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
 381                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
 382
 383         if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
 384                 info->wmm_ac_supported = 1;
 385
 386         if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
 387                 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
 388
 389         if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
 390                 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
 391
 392         if (flags & NL80211_FEATURE_QUIET)
 393                 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
 394
 395         if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
 396                 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
 397
 398         if (flags & NL80211_FEATURE_HT_IBSS)
 399                 capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS;
 400 }
 401
 402
 403 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
 404                                           struct nlattr *tb)
 405 {
 406         u32 protocols;
 407
 408         if (tb == NULL)
 409                 return;
 410
 411         protocols = nla_get_u32(tb);
 412         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
 413                    "mode");
 414         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
 415         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
 416 }
 417
 418
 419 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
 420                                        struct nlattr *tb)
 421 {
 422         struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
 423
 424         if (tb == NULL)
 425                 return;
 426
 427         if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
 428                              tb, NULL))
 429                 return;
 430
 431         if (triggers[NL80211_WOWLAN_TRIG_ANY])
 432                 capa->wowlan_triggers.any = 1;
 433         if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
 434                 capa->wowlan_triggers.disconnect = 1;
 435         if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
 436                 capa->wowlan_triggers.magic_pkt = 1;
 437         if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
 438                 capa->wowlan_triggers.gtk_rekey_failure = 1;
 439         if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
 440                 capa->wowlan_triggers.eap_identity_req = 1;
 441         if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
 442                 capa->wowlan_triggers.four_way_handshake = 1;
 443         if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
 444                 capa->wowlan_triggers.rfkill_release = 1;
 445 }
 446
 447
 448 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
 449 {
 450         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 451         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 452         struct wiphy_info_data *info = arg;
 453         struct wpa_driver_capa *capa = info->capa;
 454         struct wpa_driver_nl80211_data *drv = info->drv;
 455
 456         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 457                   genlmsg_attrlen(gnlh, 0), NULL);
 458
 459         if (tb[NL80211_ATTR_WIPHY_NAME])
 460                 os_strlcpy(drv->phyname,
 461                            nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
 462                            sizeof(drv->phyname));
 463         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
 464                 capa->max_scan_ssids =
 465                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
 466
 467         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
 468                 capa->max_sched_scan_ssids =
 469                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
 470
 471         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
 472                 capa->max_match_sets =
 473                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
 474
 475         if (tb[NL80211_ATTR_MAC_ACL_MAX])
 476                 capa->max_acl_mac_addrs =
 477                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
 478
 479         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
 480         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
 481         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
 482         wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
 483
 484         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
 485                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
 486                            "off-channel TX");
 487                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
 488         }
 489
 490         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
 491                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
 492                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
 493         }
 494
 495         wiphy_info_max_roc(capa,
 496                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
 497
 498         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
 499                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
 500
 501         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
 502                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
 503
 504         if (tb[NL80211_ATTR_DEVICE_AP_SME])
 505                 info->device_ap_sme = 1;
 506
 507         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
 508         wiphy_info_probe_resp_offload(capa,
 509                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
 510
 511         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
 512             drv->extended_capa == NULL) {
 513                 drv->extended_capa =
 514                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 515                 if (drv->extended_capa) {
 516                         os_memcpy(drv->extended_capa,
 517                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 518                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 519                         drv->extended_capa_len =
 520                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
 521                 }
 522                 drv->extended_capa_mask =
 523                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 524                 if (drv->extended_capa_mask) {
 525                         os_memcpy(drv->extended_capa_mask,
 526                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 527                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 528                 } else {
 529                         os_free(drv->extended_capa);
 530                         drv->extended_capa = NULL;
 531                         drv->extended_capa_len = 0;
 532                 }
 533         }
 534
 535         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 536                 struct nlattr *nl;
 537                 int rem;
 538
 539                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
 540                         struct nl80211_vendor_cmd_info *vinfo;
 541                         if (nla_len(nl) != sizeof(*vinfo)) {
 542                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 543                                 continue;
 544                         }
 545                         vinfo = nla_data(nl);
 546                         switch (vinfo->subcmd) {
 547                         case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
 548                                 drv->roaming_vendor_cmd_avail = 1;
 549                                 break;
 550                         case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
 551                                 drv->dfs_vendor_cmd_avail = 1;
 552                                 break;
 553                         case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES:
 554                                 drv->get_features_vendor_cmd_avail = 1;
 555                                 break;
 556                         case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
 557                                 drv->capa.flags |= WPA_DRIVER_FLAGS_ACS_OFFLOAD;
 558                                 break;
 559                         }
 560
 561                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
 562                                    vinfo->vendor_id, vinfo->subcmd);
 563                 }
 564         }
 565
 566         if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
 567                 struct nlattr *nl;
 568                 int rem;
 569
 570                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
 571                         struct nl80211_vendor_cmd_info *vinfo;
 572                         if (nla_len(nl) != sizeof(*vinfo)) {
 573                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 574                                 continue;
 575                         }
 576                         vinfo = nla_data(nl);
 577                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
 578                                    vinfo->vendor_id, vinfo->subcmd);
 579                 }
 580         }
 581
 582         wiphy_info_wowlan_triggers(capa,
 583                                    tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
 584
 585         if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
 586                 capa->max_stations =
 587                         nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
 588
 589         return NL_SKIP;
 590 }
 591
 592
 593 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
 594                                        struct wiphy_info_data *info)
 595 {
 596         u32 feat;
 597         struct nl_msg *msg;
 598         int flags = 0;
 599
 600         os_memset(info, 0, sizeof(*info));
 601         info->capa = &drv->capa;
 602         info->drv = drv;
 603
 604         feat = get_nl80211_protocol_features(drv);
 605         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
 606                 flags = NLM_F_DUMP;
 607         msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
 608         if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
 609                 nlmsg_free(msg);
 610                 return -1;
 611         }
 612
 613         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
 614                 return -1;
 615
 616         if (info->auth_supported)
 617                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
 618         else if (!info->connect_supported) {
 619                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
 620                            "authentication/association or connect commands");
 621                 info->error = 1;
 622         }
 623
 624         if (info->p2p_go_supported && info->p2p_client_supported)
 625                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
 626         if (info->p2p_concurrent) {
 627                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
 628                            "interface (driver advertised support)");
 629                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
 630                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
 631         }
 632         if (info->num_multichan_concurrent > 1) {
 633                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
 634                            "concurrent (driver advertised support)");
 635                 drv->capa.num_multichan_concurrent =
 636                         info->num_multichan_concurrent;
 637         }
 638         if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
 639                 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
 640
 641         /* default to 5000 since early versions of mac80211 don't set it */
 642         if (!drv->capa.max_remain_on_chan)
 643                 drv->capa.max_remain_on_chan = 5000;
 644
 645         if (info->channel_switch_supported)
 646                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
 647         drv->capa.wmm_ac_supported = info->wmm_ac_supported;
 648
 649         drv->capa.mac_addr_rand_sched_scan_supported =
 650                 info->mac_addr_rand_sched_scan_supported;
 651         drv->capa.mac_addr_rand_scan_supported =
 652                 info->mac_addr_rand_scan_supported;
 653
 654         return 0;
 655 }
 656
 657
 658 static int dfs_info_handler(struct nl_msg *msg, void *arg)
 659 {
 660         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 661         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 662         int *dfs_capability_ptr = arg;
 663
 664         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 665                   genlmsg_attrlen(gnlh, 0), NULL);
 666
 667         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 668                 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 669                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 670
 671                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 672                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 673
 674                 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
 675                         u32 val;
 676                         val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
 677                         wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
 678                                    val);
 679                         *dfs_capability_ptr = val;
 680                 }
 681         }
 682
 683         return NL_SKIP;
 684 }
 685
 686
 687 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
 688 {
 689         struct nl_msg *msg;
 690         int dfs_capability = 0;
 691         int ret;
 692
 693         if (!drv->dfs_vendor_cmd_avail)
 694                 return;
 695
 696         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 697             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 698             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 699                         QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
 700                 nlmsg_free(msg);
 701                 return;
 702         }
 703
 704         ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
 705         if (!ret && dfs_capability)
 706                 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
 707 }
 708
 709
 710 struct features_info {
 711         u8 *flags;
 712         size_t flags_len;
 713 };
 714
 715
 716 static int features_info_handler(struct nl_msg *msg, void *arg)
 717 {
 718         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 719         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 720         struct features_info *info = arg;
 721         struct nlattr *nl_vend, *attr;
 722
 723         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 724                   genlmsg_attrlen(gnlh, 0), NULL);
 725
 726         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 727         if (nl_vend) {
 728                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 729
 730                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 731                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 732
 733                 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS];
 734                 if (attr) {
 735                         info->flags = nla_data(attr);
 736                         info->flags_len = nla_len(attr);
 737                 }
 738         }
 739
 740         return NL_SKIP;
 741 }
 742
 743
 744 static int check_feature(enum qca_wlan_vendor_features feature,
 745                          struct features_info *info)
 746 {
 747         size_t idx = feature / 8;
 748
 749         return (idx < info->flags_len) &&
 750                 (info->flags[idx] & BIT(feature % 8));
 751 }
 752
 753
 754 static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv)
 755 {
 756         struct nl_msg *msg;
 757         struct features_info info;
 758         int ret;
 759
 760         if (!drv->get_features_vendor_cmd_avail)
 761                 return;
 762
 763         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 764             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 765             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 766                         QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) {
 767                 nlmsg_free(msg);
 768                 return;
 769         }
 770
 771         os_memset(&info, 0, sizeof(info));
 772         ret = send_and_recv_msgs(drv, msg, features_info_handler, &info);
 773         if (ret || !info.flags)
 774                 return;
 775
 776         if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info))
 777                 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD;
 778 }
 779
 780
 781 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 782 {
 783         struct wiphy_info_data info;
 784         if (wpa_driver_nl80211_get_info(drv, &info))
 785                 return -1;
 786
 787         if (info.error)
 788                 return -1;
 789
 790         drv->has_capability = 1;
 791         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
 792                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
 793                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
 794                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
 795         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
 796                 WPA_DRIVER_AUTH_SHARED |
 797                 WPA_DRIVER_AUTH_LEAP;
 798
 799         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
 800         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
 801         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 802
 803         /*
 804          * As all cfg80211 drivers must support cases where the AP interface is
 805          * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
 806          * case that the user space daemon has crashed, they must be able to
 807          * cleanup all stations and key entries in the AP tear down flow. Thus,
 808          * this flag can/should always be set for cfg80211 drivers.
 809          */
 810         drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
 811
 812         if (!info.device_ap_sme) {
 813                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
 814
 815                 /*
 816                  * No AP SME is currently assumed to also indicate no AP MLME
 817                  * in the driver/firmware.
 818                  */
 819                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
 820         }
 821
 822         drv->device_ap_sme = info.device_ap_sme;
 823         drv->poll_command_supported = info.poll_command_supported;
 824         drv->data_tx_status = info.data_tx_status;
 825         if (info.set_qos_map_supported)
 826                 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 827         drv->have_low_prio_scan = info.have_low_prio_scan;
 828
 829         /*
 830          * If poll command and tx status are supported, mac80211 is new enough
 831          * to have everything we need to not need monitor interfaces.
 832          */
 833         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
 834
 835         if (drv->device_ap_sme && drv->use_monitor) {
 836                 /*
 837                  * Non-mac80211 drivers may not support monitor interface.
 838                  * Make sure we do not get stuck with incorrect capability here
 839                  * by explicitly testing this.
 840                  */
 841                 if (!info.monitor_supported) {
 842                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
 843                                    "with device_ap_sme since no monitor mode "
 844                                    "support detected");
 845                         drv->use_monitor = 0;
 846                 }
 847         }
 848
 849         /*
 850          * If we aren't going to use monitor interfaces, but the
 851          * driver doesn't support data TX status, we won't get TX
 852          * status for EAPOL frames.
 853          */
 854         if (!drv->use_monitor && !info.data_tx_status)
 855                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 856
 857         qca_nl80211_check_dfs_capa(drv);
 858         qca_nl80211_get_features(drv);
 859
 860         return 0;
 861 }
 862
 863
 864 struct phy_info_arg {
 865         u16 *num_modes;
 866         struct hostapd_hw_modes *modes;
 867         int last_mode, last_chan_idx;
 868 };
 869
 870 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
 871                              struct nlattr *ampdu_factor,
 872                              struct nlattr *ampdu_density,
 873                              struct nlattr *mcs_set)
 874 {
 875         if (capa)
 876                 mode->ht_capab = nla_get_u16(capa);
 877
 878         if (ampdu_factor)
 879                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
 880
 881         if (ampdu_density)
 882                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
 883
 884         if (mcs_set && nla_len(mcs_set) >= 16) {
 885                 u8 *mcs;
 886                 mcs = nla_data(mcs_set);
 887                 os_memcpy(mode->mcs_set, mcs, 16);
 888         }
 889 }
 890
 891
 892 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
 893                               struct nlattr *capa,
 894                               struct nlattr *mcs_set)
 895 {
 896         if (capa)
 897                 mode->vht_capab = nla_get_u32(capa);
 898
 899         if (mcs_set && nla_len(mcs_set) >= 8) {
 900                 u8 *mcs;
 901                 mcs = nla_data(mcs_set);
 902                 os_memcpy(mode->vht_mcs_set, mcs, 8);
 903         }
 904 }
 905
 906
 907 static void phy_info_freq(struct hostapd_hw_modes *mode,
 908                           struct hostapd_channel_data *chan,
 909                           struct nlattr *tb_freq[])
 910 {
 911         u8 channel;
 912         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
 913         chan->flag = 0;
 914         chan->dfs_cac_ms = 0;
 915         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
 916                 chan->chan = channel;
 917
 918         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
 919                 chan->flag |= HOSTAPD_CHAN_DISABLED;
 920         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
 921                 chan->flag |= HOSTAPD_CHAN_NO_IR;
 922         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
 923                 chan->flag |= HOSTAPD_CHAN_RADAR;
 924         if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
 925                 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
 926         if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
 927                 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
 928
 929         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
 930                 enum nl80211_dfs_state state =
 931                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
 932
 933                 switch (state) {
 934                 case NL80211_DFS_USABLE:
 935                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
 936                         break;
 937                 case NL80211_DFS_AVAILABLE:
 938                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
 939                         break;
 940                 case NL80211_DFS_UNAVAILABLE:
 941                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
 942                         break;
 943                 }
 944         }
 945
 946         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
 947                 chan->dfs_cac_ms = nla_get_u32(
 948                         tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
 949         }
 950 }
 951
 952
 953 static int phy_info_freqs(struct phy_info_arg *phy_info,
 954                           struct hostapd_hw_modes *mode, struct nlattr *tb)
 955 {
 956         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
 957                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
 958                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
 959                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
 960                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
 961                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
 962                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
 963         };
 964         int new_channels = 0;
 965         struct hostapd_channel_data *channel;
 966         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
 967         struct nlattr *nl_freq;
 968         int rem_freq, idx;
 969
 970         if (tb == NULL)
 971                 return NL_OK;
 972
 973         nla_for_each_nested(nl_freq, tb, rem_freq) {
 974                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 975                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 976                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 977                         continue;
 978                 new_channels++;
 979         }
 980
 981         channel = os_realloc_array(mode->channels,
 982                                    mode->num_channels + new_channels,
 983                                    sizeof(struct hostapd_channel_data));
 984         if (!channel)
 985                 return NL_SKIP;
 986
 987         mode->channels = channel;
 988         mode->num_channels += new_channels;
 989
 990         idx = phy_info->last_chan_idx;
 991
 992         nla_for_each_nested(nl_freq, tb, rem_freq) {
 993                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 994                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 995                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 996                         continue;
 997                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
 998                 idx++;
 999         }
1000         phy_info->last_chan_idx = idx;
1001
1002         return NL_OK;
1003 }
1004
1005
1006 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
1007 {
1008         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1009                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1010                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
1011                 { .type = NLA_FLAG },
1012         };
1013         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1014         struct nlattr *nl_rate;
1015         int rem_rate, idx;
1016
1017         if (tb == NULL)
1018                 return NL_OK;
1019
1020         nla_for_each_nested(nl_rate, tb, rem_rate) {
1021                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1022                           nla_data(nl_rate), nla_len(nl_rate),
1023                           rate_policy);
1024                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1025                         continue;
1026                 mode->num_rates++;
1027         }
1028
1029         mode->rates = os_calloc(mode->num_rates, sizeof(int));
1030         if (!mode->rates)
1031                 return NL_SKIP;
1032
1033         idx = 0;
1034
1035         nla_for_each_nested(nl_rate, tb, rem_rate) {
1036                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1037                           nla_data(nl_rate), nla_len(nl_rate),
1038                           rate_policy);
1039                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1040                         continue;
1041                 mode->rates[idx] = nla_get_u32(
1042                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
1043                 idx++;
1044         }
1045
1046         return NL_OK;
1047 }
1048
1049
1050 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
1051 {
1052         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1053         struct hostapd_hw_modes *mode;
1054         int ret;
1055
1056         if (phy_info->last_mode != nl_band->nla_type) {
1057                 mode = os_realloc_array(phy_info->modes,
1058                                         *phy_info->num_modes + 1,
1059                                         sizeof(*mode));
1060                 if (!mode)
1061                         return NL_SKIP;
1062                 phy_info->modes = mode;
1063
1064                 mode = &phy_info->modes[*(phy_info->num_modes)];
1065                 os_memset(mode, 0, sizeof(*mode));
1066                 mode->mode = NUM_HOSTAPD_MODES;
1067                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
1068                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
1069
1070                 /*
1071                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
1072                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
1073                  * possible streams as unsupported. This will be overridden if
1074                  * driver advertises VHT support.
1075                  */
1076                 mode->vht_mcs_set[0] = 0xff;
1077                 mode->vht_mcs_set[1] = 0xff;
1078                 mode->vht_mcs_set[4] = 0xff;
1079                 mode->vht_mcs_set[5] = 0xff;
1080
1081                 *(phy_info->num_modes) += 1;
1082                 phy_info->last_mode = nl_band->nla_type;
1083                 phy_info->last_chan_idx = 0;
1084         } else
1085                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
1086
1087         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1088                   nla_len(nl_band), NULL);
1089
1090         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1091                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1092                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1093                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1094         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1095                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1096         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1097         if (ret != NL_OK)
1098                 return ret;
1099         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1100         if (ret != NL_OK)
1101                 return ret;
1102
1103         return NL_OK;
1104 }
1105
1106
1107 static int phy_info_handler(struct nl_msg *msg, void *arg)
1108 {
1109         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1110         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1111         struct phy_info_arg *phy_info = arg;
1112         struct nlattr *nl_band;
1113         int rem_band;
1114
1115         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1116                   genlmsg_attrlen(gnlh, 0), NULL);
1117
1118         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1119                 return NL_SKIP;
1120
1121         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1122         {
1123                 int res = phy_info_band(phy_info, nl_band);
1124                 if (res != NL_OK)
1125                         return res;
1126         }
1127
1128         return NL_SKIP;
1129 }
1130
1131
1132 static struct hostapd_hw_modes *
1133 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1134                                      u16 *num_modes)
1135 {
1136         u16 m;
1137         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1138         int i, mode11g_idx = -1;
1139
1140         /* heuristic to set up modes */
1141         for (m = 0; m < *num_modes; m++) {
1142                 if (!modes[m].num_channels)
1143                         continue;
1144                 if (modes[m].channels[0].freq < 4000) {
1145                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1146                         for (i = 0; i < modes[m].num_rates; i++) {
1147                                 if (modes[m].rates[i] > 200) {
1148                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1149                                         break;
1150                                 }
1151                         }
1152                 } else if (modes[m].channels[0].freq > 50000)
1153                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1154                 else
1155                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1156         }
1157
1158         /* If only 802.11g mode is included, use it to construct matching
1159          * 802.11b mode data. */
1160
1161         for (m = 0; m < *num_modes; m++) {
1162                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1163                         return modes; /* 802.11b already included */
1164                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1165                         mode11g_idx = m;
1166         }
1167
1168         if (mode11g_idx < 0)
1169                 return modes; /* 2.4 GHz band not supported at all */
1170
1171         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1172         if (nmodes == NULL)
1173                 return modes; /* Could not add 802.11b mode */
1174
1175         mode = &nmodes[*num_modes];
1176         os_memset(mode, 0, sizeof(*mode));
1177         (*num_modes)++;
1178         modes = nmodes;
1179
1180         mode->mode = HOSTAPD_MODE_IEEE80211B;
1181
1182         mode11g = &modes[mode11g_idx];
1183         mode->num_channels = mode11g->num_channels;
1184         mode->channels = os_malloc(mode11g->num_channels *
1185                                    sizeof(struct hostapd_channel_data));
1186         if (mode->channels == NULL) {
1187                 (*num_modes)--;
1188                 return modes; /* Could not add 802.11b mode */
1189         }
1190         os_memcpy(mode->channels, mode11g->channels,
1191                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1192
1193         mode->num_rates = 0;
1194         mode->rates = os_malloc(4 * sizeof(int));
1195         if (mode->rates == NULL) {
1196                 os_free(mode->channels);
1197                 (*num_modes)--;
1198                 return modes; /* Could not add 802.11b mode */
1199         }
1200
1201         for (i = 0; i < mode11g->num_rates; i++) {
1202                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1203                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1204                         continue;
1205                 mode->rates[mode->num_rates] = mode11g->rates[i];
1206                 mode->num_rates++;
1207                 if (mode->num_rates == 4)
1208                         break;
1209         }
1210
1211         if (mode->num_rates == 0) {
1212                 os_free(mode->channels);
1213                 os_free(mode->rates);
1214                 (*num_modes)--;
1215                 return modes; /* No 802.11b rates */
1216         }
1217
1218         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1219                    "information");
1220
1221         return modes;
1222 }
1223
1224
1225 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1226                                   int end)
1227 {
1228         int c;
1229
1230         for (c = 0; c < mode->num_channels; c++) {
1231                 struct hostapd_channel_data *chan = &mode->channels[c];
1232                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1233                         chan->flag |= HOSTAPD_CHAN_HT40;
1234         }
1235 }
1236
1237
1238 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1239                                       int end)
1240 {
1241         int c;
1242
1243         for (c = 0; c < mode->num_channels; c++) {
1244                 struct hostapd_channel_data *chan = &mode->channels[c];
1245                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1246                         continue;
1247                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1248                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1249                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1250                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1251         }
1252 }
1253
1254
1255 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1256                                       struct phy_info_arg *results)
1257 {
1258         u16 m;
1259
1260         for (m = 0; m < *results->num_modes; m++) {
1261                 int c;
1262                 struct hostapd_hw_modes *mode = &results->modes[m];
1263
1264                 for (c = 0; c < mode->num_channels; c++) {
1265                         struct hostapd_channel_data *chan = &mode->channels[c];
1266                         if ((u32) chan->freq - 10 >= start &&
1267                             (u32) chan->freq + 10 <= end)
1268                                 chan->max_tx_power = max_eirp;
1269                 }
1270         }
1271 }
1272
1273
1274 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1275                                   struct phy_info_arg *results)
1276 {
1277         u16 m;
1278
1279         for (m = 0; m < *results->num_modes; m++) {
1280                 if (!(results->modes[m].ht_capab &
1281                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1282                         continue;
1283                 nl80211_set_ht40_mode(&results->modes[m], start, end);
1284         }
1285 }
1286
1287
1288 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1289                                  struct phy_info_arg *results)
1290 {
1291         u32 start, end, max_bw;
1292         u16 m;
1293
1294         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1295             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1296             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1297                 return;
1298
1299         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1300         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1301         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1302
1303         if (max_bw < 20)
1304                 return;
1305
1306         for (m = 0; m < *results->num_modes; m++) {
1307                 if (!(results->modes[m].ht_capab &
1308                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1309                         continue;
1310                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1311         }
1312 }
1313
1314
1315 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1316                                  int end)
1317 {
1318         int c;
1319
1320         for (c = 0; c < mode->num_channels; c++) {
1321                 struct hostapd_channel_data *chan = &mode->channels[c];
1322                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1323                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1324
1325                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1326                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1327
1328                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1329                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1330
1331                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1332                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1333         }
1334 }
1335
1336
1337 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1338                                  struct phy_info_arg *results)
1339 {
1340         u32 start, end, max_bw;
1341         u16 m;
1342
1343         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1344             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1345             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1346                 return;
1347
1348         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1349         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1350         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1351
1352         if (max_bw < 80)
1353                 return;
1354
1355         for (m = 0; m < *results->num_modes; m++) {
1356                 if (!(results->modes[m].ht_capab &
1357                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1358                         continue;
1359                 /* TODO: use a real VHT support indication */
1360                 if (!results->modes[m].vht_capab)
1361                         continue;
1362
1363                 nl80211_set_vht_mode(&results->modes[m], start, end);
1364         }
1365 }
1366
1367
1368 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1369 {
1370         switch (region) {
1371         case NL80211_DFS_UNSET:
1372                 return "DFS-UNSET";
1373         case NL80211_DFS_FCC:
1374                 return "DFS-FCC";
1375         case NL80211_DFS_ETSI:
1376                 return "DFS-ETSI";
1377         case NL80211_DFS_JP:
1378                 return "DFS-JP";
1379         default:
1380                 return "DFS-invalid";
1381         }
1382 }
1383
1384
1385 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1386 {
1387         struct phy_info_arg *results = arg;
1388         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1389         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1390         struct nlattr *nl_rule;
1391         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1392         int rem_rule;
1393         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1394                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1395                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1396                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1397                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1398                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1399                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1400         };
1401
1402         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1403                   genlmsg_attrlen(gnlh, 0), NULL);
1404         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1405             !tb_msg[NL80211_ATTR_REG_RULES]) {
1406                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1407                            "available");
1408                 return NL_SKIP;
1409         }
1410
1411         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1412                 enum nl80211_dfs_regions dfs_domain;
1413                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1414                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1415                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1416                            dfs_domain_name(dfs_domain));
1417         } else {
1418                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1419                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1420         }
1421
1422         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1423         {
1424                 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1425                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1426                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1427                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1428                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1429                         continue;
1430                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1431                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1432                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1433                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1434                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1435                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1436                 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1437                         flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1438
1439                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1440                            start, end, max_bw, max_eirp,
1441                            flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1442                            flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1443                            flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1444                            flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1445                            "",
1446                            flags & NL80211_RRF_DFS ? " (DFS)" : "",
1447                            flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1448                            flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1449                            flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1450                 if (max_bw >= 40)
1451                         nl80211_reg_rule_ht40(start, end, results);
1452                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1453                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
1454                                                   results);
1455         }
1456
1457         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1458         {
1459                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1460                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1461                 nl80211_reg_rule_sec(tb_rule, results);
1462         }
1463
1464         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1465         {
1466                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1467                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1468                 nl80211_reg_rule_vht(tb_rule, results);
1469         }
1470
1471         return NL_SKIP;
1472 }
1473
1474
1475 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1476                                         struct phy_info_arg *results)
1477 {
1478         struct nl_msg *msg;
1479
1480         msg = nlmsg_alloc();
1481         if (!msg)
1482                 return -ENOMEM;
1483
1484         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1485         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1486 }
1487
1488
1489 struct hostapd_hw_modes *
1490 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1491 {
1492         u32 feat;
1493         struct i802_bss *bss = priv;
1494         struct wpa_driver_nl80211_data *drv = bss->drv;
1495         int nl_flags = 0;
1496         struct nl_msg *msg;
1497         struct phy_info_arg result = {
1498                 .num_modes = num_modes,
1499                 .modes = NULL,
1500                 .last_mode = -1,
1501         };
1502
1503         *num_modes = 0;
1504         *flags = 0;
1505
1506         feat = get_nl80211_protocol_features(drv);
1507         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1508                 nl_flags = NLM_F_DUMP;
1509         if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
1510             nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
1511                 nlmsg_free(msg);
1512                 return NULL;
1513         }
1514
1515         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1516                 nl80211_set_regulatory_flags(drv, &result);
1517                 return wpa_driver_nl80211_postprocess_modes(result.modes,
1518                                                             num_modes);
1519         }
1520
1521         return NULL;
1522 }