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 };
  80
  81
  82 static unsigned int probe_resp_offload_support(int supp_protocols)
  83 {
  84         unsigned int prot = 0;
  85
  86         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
  87                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
  88         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
  89                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
  90         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
  91                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
  92         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
  93                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
  94
  95         return prot;
  96 }
  97
  98
  99 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
 100                                          struct nlattr *tb)
 101 {
 102         struct nlattr *nl_mode;
 103         int i;
 104
 105         if (tb == NULL)
 106                 return;
 107
 108         nla_for_each_nested(nl_mode, tb, i) {
 109                 switch (nla_type(nl_mode)) {
 110                 case NL80211_IFTYPE_AP:
 111                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
 112                         break;
 113                 case NL80211_IFTYPE_MESH_POINT:
 114                         info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
 115                         break;
 116                 case NL80211_IFTYPE_ADHOC:
 117                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
 118                         break;
 119                 case NL80211_IFTYPE_P2P_DEVICE:
 120                         info->capa->flags |=
 121                                 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
 122                         break;
 123                 case NL80211_IFTYPE_P2P_GO:
 124                         info->p2p_go_supported = 1;
 125                         break;
 126                 case NL80211_IFTYPE_P2P_CLIENT:
 127                         info->p2p_client_supported = 1;
 128                         break;
 129                 case NL80211_IFTYPE_MONITOR:
 130                         info->monitor_supported = 1;
 131                         break;
 132                 }
 133         }
 134 }
 135
 136
 137 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
 138                                          struct nlattr *nl_combi)
 139 {
 140         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
 141         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
 142         struct nlattr *nl_limit, *nl_mode;
 143         int err, rem_limit, rem_mode;
 144         int combination_has_p2p = 0, combination_has_mgd = 0;
 145         static struct nla_policy
 146         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
 147                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
 148                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
 149                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
 150                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
 151                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
 152         },
 153         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
 154                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
 155                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
 156         };
 157
 158         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
 159                                nl_combi, iface_combination_policy);
 160         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
 161             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
 162             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
 163                 return 0; /* broken combination */
 164
 165         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
 166                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
 167
 168         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
 169                             rem_limit) {
 170                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
 171                                        nl_limit, iface_limit_policy);
 172                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
 173                         return 0; /* broken combination */
 174
 175                 nla_for_each_nested(nl_mode,
 176                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
 177                                     rem_mode) {
 178                         int ift = nla_type(nl_mode);
 179                         if (ift == NL80211_IFTYPE_P2P_GO ||
 180                             ift == NL80211_IFTYPE_P2P_CLIENT)
 181                                 combination_has_p2p = 1;
 182                         if (ift == NL80211_IFTYPE_STATION)
 183                                 combination_has_mgd = 1;
 184                 }
 185                 if (combination_has_p2p && combination_has_mgd)
 186                         break;
 187         }
 188
 189         if (combination_has_p2p && combination_has_mgd) {
 190                 unsigned int num_channels =
 191                         nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
 192
 193                 info->p2p_concurrent = 1;
 194                 if (info->num_multichan_concurrent < num_channels)
 195                         info->num_multichan_concurrent = num_channels;
 196         }
 197
 198         return 0;
 199 }
 200
 201
 202 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
 203                                   struct nlattr *tb)
 204 {
 205         struct nlattr *nl_combi;
 206         int rem_combi;
 207
 208         if (tb == NULL)
 209                 return;
 210
 211         nla_for_each_nested(nl_combi, tb, rem_combi) {
 212                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
 213                         break;
 214         }
 215 }
 216
 217
 218 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
 219                                  struct nlattr *tb)
 220 {
 221         struct nlattr *nl_cmd;
 222         int i;
 223
 224         if (tb == NULL)
 225                 return;
 226
 227         nla_for_each_nested(nl_cmd, tb, i) {
 228                 switch (nla_get_u32(nl_cmd)) {
 229                 case NL80211_CMD_AUTHENTICATE:
 230                         info->auth_supported = 1;
 231                         break;
 232                 case NL80211_CMD_CONNECT:
 233                         info->connect_supported = 1;
 234                         break;
 235                 case NL80211_CMD_START_SCHED_SCAN:
 236                         info->capa->sched_scan_supported = 1;
 237                         break;
 238                 case NL80211_CMD_PROBE_CLIENT:
 239                         info->poll_command_supported = 1;
 240                         break;
 241                 case NL80211_CMD_CHANNEL_SWITCH:
 242                         info->channel_switch_supported = 1;
 243                         break;
 244                 case NL80211_CMD_SET_QOS_MAP:
 245                         info->set_qos_map_supported = 1;
 246                         break;
 247                 }
 248         }
 249 }
 250
 251
 252 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
 253                                      struct nlattr *tb)
 254 {
 255         int i, num;
 256         u32 *ciphers;
 257
 258         if (tb == NULL)
 259                 return;
 260
 261         num = nla_len(tb) / sizeof(u32);
 262         ciphers = nla_data(tb);
 263         for (i = 0; i < num; i++) {
 264                 u32 c = ciphers[i];
 265
 266                 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
 267                            c >> 24, (c >> 16) & 0xff,
 268                            (c >> 8) & 0xff, c & 0xff);
 269                 switch (c) {
 270                 case WLAN_CIPHER_SUITE_CCMP_256:
 271                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
 272                         break;
 273                 case WLAN_CIPHER_SUITE_GCMP_256:
 274                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
 275                         break;
 276                 case WLAN_CIPHER_SUITE_CCMP:
 277                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
 278                         break;
 279                 case WLAN_CIPHER_SUITE_GCMP:
 280                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
 281                         break;
 282                 case WLAN_CIPHER_SUITE_TKIP:
 283                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
 284                         break;
 285                 case WLAN_CIPHER_SUITE_WEP104:
 286                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
 287                         break;
 288                 case WLAN_CIPHER_SUITE_WEP40:
 289                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
 290                         break;
 291                 case WLAN_CIPHER_SUITE_AES_CMAC:
 292                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
 293                         break;
 294                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 295                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
 296                         break;
 297                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 298                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
 299                         break;
 300                 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 301                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
 302                         break;
 303                 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
 304                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
 305                         break;
 306                 }
 307         }
 308 }
 309
 310
 311 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
 312                                struct nlattr *tb)
 313 {
 314         if (tb)
 315                 capa->max_remain_on_chan = nla_get_u32(tb);
 316 }
 317
 318
 319 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
 320                             struct nlattr *ext_setup)
 321 {
 322         if (tdls == NULL)
 323                 return;
 324
 325         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
 326         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
 327
 328         if (ext_setup) {
 329                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
 330                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
 331         }
 332 }
 333
 334
 335 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
 336                                      struct nlattr *tb)
 337 {
 338         u32 flags;
 339         struct wpa_driver_capa *capa = info->capa;
 340
 341         if (tb == NULL)
 342                 return;
 343
 344         flags = nla_get_u32(tb);
 345
 346         if (flags & NL80211_FEATURE_SK_TX_STATUS)
 347                 info->data_tx_status = 1;
 348
 349         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
 350                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
 351
 352         if (flags & NL80211_FEATURE_SAE)
 353                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
 354
 355         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
 356                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
 357
 358         if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
 359                 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
 360
 361         if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
 362                 info->have_low_prio_scan = 1;
 363
 364         if (flags & NL80211_FEATURE_STATIC_SMPS)
 365                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
 366
 367         if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
 368                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
 369
 370         if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
 371                 info->wmm_ac_supported = 1;
 372
 373         if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
 374                 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
 375
 376         if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
 377                 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
 378
 379         if (flags & NL80211_FEATURE_QUIET)
 380                 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
 381
 382         if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
 383                 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
 384 }
 385
 386
 387 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
 388                                           struct nlattr *tb)
 389 {
 390         u32 protocols;
 391
 392         if (tb == NULL)
 393                 return;
 394
 395         protocols = nla_get_u32(tb);
 396         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
 397                    "mode");
 398         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
 399         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
 400 }
 401
 402
 403 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
 404                                        struct nlattr *tb)
 405 {
 406         struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
 407
 408         if (tb == NULL)
 409                 return;
 410
 411         if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
 412                              tb, NULL))
 413                 return;
 414
 415         if (triggers[NL80211_WOWLAN_TRIG_ANY])
 416                 capa->wowlan_triggers.any = 1;
 417         if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
 418                 capa->wowlan_triggers.disconnect = 1;
 419         if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
 420                 capa->wowlan_triggers.magic_pkt = 1;
 421         if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
 422                 capa->wowlan_triggers.gtk_rekey_failure = 1;
 423         if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
 424                 capa->wowlan_triggers.eap_identity_req = 1;
 425         if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
 426                 capa->wowlan_triggers.four_way_handshake = 1;
 427         if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
 428                 capa->wowlan_triggers.rfkill_release = 1;
 429 }
 430
 431
 432 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
 433 {
 434         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 435         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 436         struct wiphy_info_data *info = arg;
 437         struct wpa_driver_capa *capa = info->capa;
 438         struct wpa_driver_nl80211_data *drv = info->drv;
 439
 440         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 441                   genlmsg_attrlen(gnlh, 0), NULL);
 442
 443         if (tb[NL80211_ATTR_WIPHY_NAME])
 444                 os_strlcpy(drv->phyname,
 445                            nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
 446                            sizeof(drv->phyname));
 447         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
 448                 capa->max_scan_ssids =
 449                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
 450
 451         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
 452                 capa->max_sched_scan_ssids =
 453                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
 454
 455         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
 456                 capa->max_match_sets =
 457                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
 458
 459         if (tb[NL80211_ATTR_MAC_ACL_MAX])
 460                 capa->max_acl_mac_addrs =
 461                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
 462
 463         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
 464         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
 465         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
 466         wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
 467
 468         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
 469                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
 470                            "off-channel TX");
 471                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
 472         }
 473
 474         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
 475                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
 476                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
 477         }
 478
 479         wiphy_info_max_roc(capa,
 480                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
 481
 482         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
 483                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
 484
 485         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
 486                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
 487
 488         if (tb[NL80211_ATTR_DEVICE_AP_SME])
 489                 info->device_ap_sme = 1;
 490
 491         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
 492         wiphy_info_probe_resp_offload(capa,
 493                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
 494
 495         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
 496             drv->extended_capa == NULL) {
 497                 drv->extended_capa =
 498                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 499                 if (drv->extended_capa) {
 500                         os_memcpy(drv->extended_capa,
 501                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 502                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 503                         drv->extended_capa_len =
 504                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
 505                 }
 506                 drv->extended_capa_mask =
 507                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 508                 if (drv->extended_capa_mask) {
 509                         os_memcpy(drv->extended_capa_mask,
 510                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 511                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 512                 } else {
 513                         os_free(drv->extended_capa);
 514                         drv->extended_capa = NULL;
 515                         drv->extended_capa_len = 0;
 516                 }
 517         }
 518
 519         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 520                 struct nlattr *nl;
 521                 int rem;
 522
 523                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
 524                         struct nl80211_vendor_cmd_info *vinfo;
 525                         if (nla_len(nl) != sizeof(*vinfo)) {
 526                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 527                                 continue;
 528                         }
 529                         vinfo = nla_data(nl);
 530                         switch (vinfo->subcmd) {
 531                         case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
 532                                 drv->roaming_vendor_cmd_avail = 1;
 533                                 break;
 534                         case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
 535                                 drv->dfs_vendor_cmd_avail = 1;
 536                                 break;
 537                         case QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY:
 538                                 drv->key_mgmt_set_key_vendor_cmd_avail = 1;
 539                                 break;
 540                         case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
 541                                 drv->capa.flags |= WPA_DRIVER_FLAGS_ACS_OFFLOAD;
 542                                 break;
 543                         }
 544
 545                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
 546                                    vinfo->vendor_id, vinfo->subcmd);
 547                 }
 548         }
 549
 550         if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
 551                 struct nlattr *nl;
 552                 int rem;
 553
 554                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
 555                         struct nl80211_vendor_cmd_info *vinfo;
 556                         if (nla_len(nl) != sizeof(*vinfo)) {
 557                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 558                                 continue;
 559                         }
 560                         vinfo = nla_data(nl);
 561                         if (vinfo->subcmd ==
 562                             QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_ROAM_AUTH)
 563                                 drv->roam_auth_vendor_event_avail = 1;
 564                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
 565                                    vinfo->vendor_id, vinfo->subcmd);
 566                 }
 567         }
 568
 569         wiphy_info_wowlan_triggers(capa,
 570                                    tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
 571
 572         if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
 573                 capa->max_stations =
 574                         nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
 575
 576         return NL_SKIP;
 577 }
 578
 579
 580 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
 581                                        struct wiphy_info_data *info)
 582 {
 583         u32 feat;
 584         struct nl_msg *msg;
 585         int flags = 0;
 586
 587         os_memset(info, 0, sizeof(*info));
 588         info->capa = &drv->capa;
 589         info->drv = drv;
 590
 591         msg = nlmsg_alloc();
 592         if (!msg)
 593                 return -1;
 594
 595         feat = get_nl80211_protocol_features(drv);
 596         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
 597                 flags = NLM_F_DUMP;
 598         if (!nl80211_cmd(drv, msg, flags, NL80211_CMD_GET_WIPHY) ||
 599             nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP) ||
 600             nl80211_set_iface_id(msg, drv->first_bss) < 0) {
 601                 nlmsg_free(msg);
 602                 return -1;
 603         }
 604
 605         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
 606                 return -1;
 607
 608         if (info->auth_supported)
 609                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
 610         else if (!info->connect_supported) {
 611                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
 612                            "authentication/association or connect commands");
 613                 info->error = 1;
 614         }
 615
 616         if (info->p2p_go_supported && info->p2p_client_supported)
 617                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
 618         if (info->p2p_concurrent) {
 619                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
 620                            "interface (driver advertised support)");
 621                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
 622                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
 623         }
 624         if (info->num_multichan_concurrent > 1) {
 625                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
 626                            "concurrent (driver advertised support)");
 627                 drv->capa.num_multichan_concurrent =
 628                         info->num_multichan_concurrent;
 629         }
 630         if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
 631                 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
 632
 633         /* default to 5000 since early versions of mac80211 don't set it */
 634         if (!drv->capa.max_remain_on_chan)
 635                 drv->capa.max_remain_on_chan = 5000;
 636
 637         if (info->channel_switch_supported)
 638                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
 639         drv->capa.wmm_ac_supported = info->wmm_ac_supported;
 640
 641         return 0;
 642 }
 643
 644
 645 static int dfs_info_handler(struct nl_msg *msg, void *arg)
 646 {
 647         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 648         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 649         int *dfs_capability_ptr = arg;
 650
 651         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 652                   genlmsg_attrlen(gnlh, 0), NULL);
 653
 654         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 655                 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 656                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 657
 658                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 659                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 660
 661                 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
 662                         u32 val;
 663                         val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
 664                         wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
 665                                    val);
 666                         *dfs_capability_ptr = val;
 667                 }
 668         }
 669
 670         return NL_SKIP;
 671 }
 672
 673
 674 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
 675 {
 676         struct nl_msg *msg;
 677         int dfs_capability = 0;
 678         int ret;
 679
 680         if (!drv->dfs_vendor_cmd_avail)
 681                 return;
 682
 683
 684         msg = nlmsg_alloc();
 685         if (!msg)
 686                 return;
 687
 688         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR) ||
 689             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
 690             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 691             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 692                         QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
 693                 nlmsg_free(msg);
 694                 return;
 695         }
 696
 697         ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
 698         if (!ret && dfs_capability)
 699                 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
 700 }
 701
 702
 703 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 704 {
 705         struct wiphy_info_data info;
 706         if (wpa_driver_nl80211_get_info(drv, &info))
 707                 return -1;
 708
 709         if (info.error)
 710                 return -1;
 711
 712         drv->has_capability = 1;
 713         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
 714                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
 715                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
 716                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
 717         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
 718                 WPA_DRIVER_AUTH_SHARED |
 719                 WPA_DRIVER_AUTH_LEAP;
 720
 721         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
 722         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
 723         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 724
 725         /*
 726          * As all cfg80211 drivers must support cases where the AP interface is
 727          * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
 728          * case that the user space daemon has crashed, they must be able to
 729          * cleanup all stations and key entries in the AP tear down flow. Thus,
 730          * this flag can/should always be set for cfg80211 drivers.
 731          */
 732         drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
 733
 734         if (!info.device_ap_sme) {
 735                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
 736
 737                 /*
 738                  * No AP SME is currently assumed to also indicate no AP MLME
 739                  * in the driver/firmware.
 740                  */
 741                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
 742         }
 743
 744         drv->device_ap_sme = info.device_ap_sme;
 745         drv->poll_command_supported = info.poll_command_supported;
 746         drv->data_tx_status = info.data_tx_status;
 747         if (info.set_qos_map_supported)
 748                 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 749         drv->have_low_prio_scan = info.have_low_prio_scan;
 750
 751         /*
 752          * If poll command and tx status are supported, mac80211 is new enough
 753          * to have everything we need to not need monitor interfaces.
 754          */
 755         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
 756
 757         if (drv->device_ap_sme && drv->use_monitor) {
 758                 /*
 759                  * Non-mac80211 drivers may not support monitor interface.
 760                  * Make sure we do not get stuck with incorrect capability here
 761                  * by explicitly testing this.
 762                  */
 763                 if (!info.monitor_supported) {
 764                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
 765                                    "with device_ap_sme since no monitor mode "
 766                                    "support detected");
 767                         drv->use_monitor = 0;
 768                 }
 769         }
 770
 771         /*
 772          * If we aren't going to use monitor interfaces, but the
 773          * driver doesn't support data TX status, we won't get TX
 774          * status for EAPOL frames.
 775          */
 776         if (!drv->use_monitor && !info.data_tx_status)
 777                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 778
 779         qca_nl80211_check_dfs_capa(drv);
 780
 781         return 0;
 782 }
 783
 784
 785 struct phy_info_arg {
 786         u16 *num_modes;
 787         struct hostapd_hw_modes *modes;
 788         int last_mode, last_chan_idx;
 789 };
 790
 791 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
 792                              struct nlattr *ampdu_factor,
 793                              struct nlattr *ampdu_density,
 794                              struct nlattr *mcs_set)
 795 {
 796         if (capa)
 797                 mode->ht_capab = nla_get_u16(capa);
 798
 799         if (ampdu_factor)
 800                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
 801
 802         if (ampdu_density)
 803                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
 804
 805         if (mcs_set && nla_len(mcs_set) >= 16) {
 806                 u8 *mcs;
 807                 mcs = nla_data(mcs_set);
 808                 os_memcpy(mode->mcs_set, mcs, 16);
 809         }
 810 }
 811
 812
 813 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
 814                               struct nlattr *capa,
 815                               struct nlattr *mcs_set)
 816 {
 817         if (capa)
 818                 mode->vht_capab = nla_get_u32(capa);
 819
 820         if (mcs_set && nla_len(mcs_set) >= 8) {
 821                 u8 *mcs;
 822                 mcs = nla_data(mcs_set);
 823                 os_memcpy(mode->vht_mcs_set, mcs, 8);
 824         }
 825 }
 826
 827
 828 static void phy_info_freq(struct hostapd_hw_modes *mode,
 829                           struct hostapd_channel_data *chan,
 830                           struct nlattr *tb_freq[])
 831 {
 832         u8 channel;
 833         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
 834         chan->flag = 0;
 835         chan->dfs_cac_ms = 0;
 836         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
 837                 chan->chan = channel;
 838
 839         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
 840                 chan->flag |= HOSTAPD_CHAN_DISABLED;
 841         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
 842                 chan->flag |= HOSTAPD_CHAN_NO_IR;
 843         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
 844                 chan->flag |= HOSTAPD_CHAN_RADAR;
 845         if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
 846                 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
 847         if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
 848                 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
 849
 850         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
 851                 enum nl80211_dfs_state state =
 852                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
 853
 854                 switch (state) {
 855                 case NL80211_DFS_USABLE:
 856                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
 857                         break;
 858                 case NL80211_DFS_AVAILABLE:
 859                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
 860                         break;
 861                 case NL80211_DFS_UNAVAILABLE:
 862                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
 863                         break;
 864                 }
 865         }
 866
 867         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
 868                 chan->dfs_cac_ms = nla_get_u32(
 869                         tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
 870         }
 871 }
 872
 873
 874 static int phy_info_freqs(struct phy_info_arg *phy_info,
 875                           struct hostapd_hw_modes *mode, struct nlattr *tb)
 876 {
 877         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
 878                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
 879                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
 880                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
 881                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
 882                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
 883                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
 884         };
 885         int new_channels = 0;
 886         struct hostapd_channel_data *channel;
 887         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
 888         struct nlattr *nl_freq;
 889         int rem_freq, idx;
 890
 891         if (tb == NULL)
 892                 return NL_OK;
 893
 894         nla_for_each_nested(nl_freq, tb, rem_freq) {
 895                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 896                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 897                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 898                         continue;
 899                 new_channels++;
 900         }
 901
 902         channel = os_realloc_array(mode->channels,
 903                                    mode->num_channels + new_channels,
 904                                    sizeof(struct hostapd_channel_data));
 905         if (!channel)
 906                 return NL_SKIP;
 907
 908         mode->channels = channel;
 909         mode->num_channels += new_channels;
 910
 911         idx = phy_info->last_chan_idx;
 912
 913         nla_for_each_nested(nl_freq, tb, rem_freq) {
 914                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 915                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 916                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 917                         continue;
 918                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
 919                 idx++;
 920         }
 921         phy_info->last_chan_idx = idx;
 922
 923         return NL_OK;
 924 }
 925
 926
 927 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
 928 {
 929         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
 930                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
 931                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
 932                 { .type = NLA_FLAG },
 933         };
 934         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
 935         struct nlattr *nl_rate;
 936         int rem_rate, idx;
 937
 938         if (tb == NULL)
 939                 return NL_OK;
 940
 941         nla_for_each_nested(nl_rate, tb, rem_rate) {
 942                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
 943                           nla_data(nl_rate), nla_len(nl_rate),
 944                           rate_policy);
 945                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
 946                         continue;
 947                 mode->num_rates++;
 948         }
 949
 950         mode->rates = os_calloc(mode->num_rates, sizeof(int));
 951         if (!mode->rates)
 952                 return NL_SKIP;
 953
 954         idx = 0;
 955
 956         nla_for_each_nested(nl_rate, tb, rem_rate) {
 957                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
 958                           nla_data(nl_rate), nla_len(nl_rate),
 959                           rate_policy);
 960                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
 961                         continue;
 962                 mode->rates[idx] = nla_get_u32(
 963                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
 964                 idx++;
 965         }
 966
 967         return NL_OK;
 968 }
 969
 970
 971 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
 972 {
 973         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
 974         struct hostapd_hw_modes *mode;
 975         int ret;
 976
 977         if (phy_info->last_mode != nl_band->nla_type) {
 978                 mode = os_realloc_array(phy_info->modes,
 979                                         *phy_info->num_modes + 1,
 980                                         sizeof(*mode));
 981                 if (!mode)
 982                         return NL_SKIP;
 983                 phy_info->modes = mode;
 984
 985                 mode = &phy_info->modes[*(phy_info->num_modes)];
 986                 os_memset(mode, 0, sizeof(*mode));
 987                 mode->mode = NUM_HOSTAPD_MODES;
 988                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
 989                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
 990
 991                 /*
 992                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
 993                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
 994                  * possible streams as unsupported. This will be overridden if
 995                  * driver advertises VHT support.
 996                  */
 997                 mode->vht_mcs_set[0] = 0xff;
 998                 mode->vht_mcs_set[1] = 0xff;
 999                 mode->vht_mcs_set[4] = 0xff;
1000                 mode->vht_mcs_set[5] = 0xff;
1001
1002                 *(phy_info->num_modes) += 1;
1003                 phy_info->last_mode = nl_band->nla_type;
1004                 phy_info->last_chan_idx = 0;
1005         } else
1006                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
1007
1008         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1009                   nla_len(nl_band), NULL);
1010
1011         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1012                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1013                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1014                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1015         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1016                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1017         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1018         if (ret != NL_OK)
1019                 return ret;
1020         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1021         if (ret != NL_OK)
1022                 return ret;
1023
1024         return NL_OK;
1025 }
1026
1027
1028 static int phy_info_handler(struct nl_msg *msg, void *arg)
1029 {
1030         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1031         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1032         struct phy_info_arg *phy_info = arg;
1033         struct nlattr *nl_band;
1034         int rem_band;
1035
1036         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1037                   genlmsg_attrlen(gnlh, 0), NULL);
1038
1039         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1040                 return NL_SKIP;
1041
1042         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1043         {
1044                 int res = phy_info_band(phy_info, nl_band);
1045                 if (res != NL_OK)
1046                         return res;
1047         }
1048
1049         return NL_SKIP;
1050 }
1051
1052
1053 static struct hostapd_hw_modes *
1054 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1055                                      u16 *num_modes)
1056 {
1057         u16 m;
1058         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1059         int i, mode11g_idx = -1;
1060
1061         /* heuristic to set up modes */
1062         for (m = 0; m < *num_modes; m++) {
1063                 if (!modes[m].num_channels)
1064                         continue;
1065                 if (modes[m].channels[0].freq < 4000) {
1066                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1067                         for (i = 0; i < modes[m].num_rates; i++) {
1068                                 if (modes[m].rates[i] > 200) {
1069                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1070                                         break;
1071                                 }
1072                         }
1073                 } else if (modes[m].channels[0].freq > 50000)
1074                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1075                 else
1076                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1077         }
1078
1079         /* If only 802.11g mode is included, use it to construct matching
1080          * 802.11b mode data. */
1081
1082         for (m = 0; m < *num_modes; m++) {
1083                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1084                         return modes; /* 802.11b already included */
1085                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1086                         mode11g_idx = m;
1087         }
1088
1089         if (mode11g_idx < 0)
1090                 return modes; /* 2.4 GHz band not supported at all */
1091
1092         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1093         if (nmodes == NULL)
1094                 return modes; /* Could not add 802.11b mode */
1095
1096         mode = &nmodes[*num_modes];
1097         os_memset(mode, 0, sizeof(*mode));
1098         (*num_modes)++;
1099         modes = nmodes;
1100
1101         mode->mode = HOSTAPD_MODE_IEEE80211B;
1102
1103         mode11g = &modes[mode11g_idx];
1104         mode->num_channels = mode11g->num_channels;
1105         mode->channels = os_malloc(mode11g->num_channels *
1106                                    sizeof(struct hostapd_channel_data));
1107         if (mode->channels == NULL) {
1108                 (*num_modes)--;
1109                 return modes; /* Could not add 802.11b mode */
1110         }
1111         os_memcpy(mode->channels, mode11g->channels,
1112                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1113
1114         mode->num_rates = 0;
1115         mode->rates = os_malloc(4 * sizeof(int));
1116         if (mode->rates == NULL) {
1117                 os_free(mode->channels);
1118                 (*num_modes)--;
1119                 return modes; /* Could not add 802.11b mode */
1120         }
1121
1122         for (i = 0; i < mode11g->num_rates; i++) {
1123                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1124                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1125                         continue;
1126                 mode->rates[mode->num_rates] = mode11g->rates[i];
1127                 mode->num_rates++;
1128                 if (mode->num_rates == 4)
1129                         break;
1130         }
1131
1132         if (mode->num_rates == 0) {
1133                 os_free(mode->channels);
1134                 os_free(mode->rates);
1135                 (*num_modes)--;
1136                 return modes; /* No 802.11b rates */
1137         }
1138
1139         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1140                    "information");
1141
1142         return modes;
1143 }
1144
1145
1146 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1147                                   int end)
1148 {
1149         int c;
1150
1151         for (c = 0; c < mode->num_channels; c++) {
1152                 struct hostapd_channel_data *chan = &mode->channels[c];
1153                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1154                         chan->flag |= HOSTAPD_CHAN_HT40;
1155         }
1156 }
1157
1158
1159 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1160                                       int end)
1161 {
1162         int c;
1163
1164         for (c = 0; c < mode->num_channels; c++) {
1165                 struct hostapd_channel_data *chan = &mode->channels[c];
1166                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1167                         continue;
1168                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1169                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1170                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1171                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1172         }
1173 }
1174
1175
1176 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1177                                       struct phy_info_arg *results)
1178 {
1179         u16 m;
1180
1181         for (m = 0; m < *results->num_modes; m++) {
1182                 int c;
1183                 struct hostapd_hw_modes *mode = &results->modes[m];
1184
1185                 for (c = 0; c < mode->num_channels; c++) {
1186                         struct hostapd_channel_data *chan = &mode->channels[c];
1187                         if ((u32) chan->freq - 10 >= start &&
1188                             (u32) chan->freq + 10 <= end)
1189                                 chan->max_tx_power = max_eirp;
1190                 }
1191         }
1192 }
1193
1194
1195 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1196                                   struct phy_info_arg *results)
1197 {
1198         u16 m;
1199
1200         for (m = 0; m < *results->num_modes; m++) {
1201                 if (!(results->modes[m].ht_capab &
1202                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1203                         continue;
1204                 nl80211_set_ht40_mode(&results->modes[m], start, end);
1205         }
1206 }
1207
1208
1209 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1210                                  struct phy_info_arg *results)
1211 {
1212         u32 start, end, max_bw;
1213         u16 m;
1214
1215         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1216             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1217             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1218                 return;
1219
1220         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1221         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1222         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1223
1224         if (max_bw < 20)
1225                 return;
1226
1227         for (m = 0; m < *results->num_modes; m++) {
1228                 if (!(results->modes[m].ht_capab &
1229                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1230                         continue;
1231                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1232         }
1233 }
1234
1235
1236 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1237                                  int end)
1238 {
1239         int c;
1240
1241         for (c = 0; c < mode->num_channels; c++) {
1242                 struct hostapd_channel_data *chan = &mode->channels[c];
1243                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1244                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1245
1246                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1247                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1248
1249                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1250                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1251
1252                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1253                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1254         }
1255 }
1256
1257
1258 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1259                                  struct phy_info_arg *results)
1260 {
1261         u32 start, end, max_bw;
1262         u16 m;
1263
1264         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1265             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1266             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1267                 return;
1268
1269         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1270         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1271         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1272
1273         if (max_bw < 80)
1274                 return;
1275
1276         for (m = 0; m < *results->num_modes; m++) {
1277                 if (!(results->modes[m].ht_capab &
1278                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1279                         continue;
1280                 /* TODO: use a real VHT support indication */
1281                 if (!results->modes[m].vht_capab)
1282                         continue;
1283
1284                 nl80211_set_vht_mode(&results->modes[m], start, end);
1285         }
1286 }
1287
1288
1289 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1290 {
1291         switch (region) {
1292         case NL80211_DFS_UNSET:
1293                 return "DFS-UNSET";
1294         case NL80211_DFS_FCC:
1295                 return "DFS-FCC";
1296         case NL80211_DFS_ETSI:
1297                 return "DFS-ETSI";
1298         case NL80211_DFS_JP:
1299                 return "DFS-JP";
1300         default:
1301                 return "DFS-invalid";
1302         }
1303 }
1304
1305
1306 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1307 {
1308         struct phy_info_arg *results = arg;
1309         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1310         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1311         struct nlattr *nl_rule;
1312         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1313         int rem_rule;
1314         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1315                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1316                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1317                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1318                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1319                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1320                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1321         };
1322
1323         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1324                   genlmsg_attrlen(gnlh, 0), NULL);
1325         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1326             !tb_msg[NL80211_ATTR_REG_RULES]) {
1327                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1328                            "available");
1329                 return NL_SKIP;
1330         }
1331
1332         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1333                 enum nl80211_dfs_regions dfs_domain;
1334                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1335                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1336                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1337                            dfs_domain_name(dfs_domain));
1338         } else {
1339                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1340                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1341         }
1342
1343         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1344         {
1345                 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1346                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1347                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1348                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1349                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1350                         continue;
1351                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1352                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1353                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1354                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1355                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1356                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1357                 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1358                         flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1359
1360                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1361                            start, end, max_bw, max_eirp,
1362                            flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1363                            flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1364                            flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1365                            flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1366                            "",
1367                            flags & NL80211_RRF_DFS ? " (DFS)" : "",
1368                            flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1369                            flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1370                            flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1371                 if (max_bw >= 40)
1372                         nl80211_reg_rule_ht40(start, end, results);
1373                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1374                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
1375                                                   results);
1376         }
1377
1378         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1379         {
1380                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1381                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1382                 nl80211_reg_rule_sec(tb_rule, results);
1383         }
1384
1385         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1386         {
1387                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1388                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1389                 nl80211_reg_rule_vht(tb_rule, results);
1390         }
1391
1392         return NL_SKIP;
1393 }
1394
1395
1396 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1397                                         struct phy_info_arg *results)
1398 {
1399         struct nl_msg *msg;
1400
1401         msg = nlmsg_alloc();
1402         if (!msg)
1403                 return -ENOMEM;
1404
1405         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1406         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1407 }
1408
1409
1410 struct hostapd_hw_modes *
1411 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1412 {
1413         u32 feat;
1414         struct i802_bss *bss = priv;
1415         struct wpa_driver_nl80211_data *drv = bss->drv;
1416         int nl_flags = 0;
1417         struct nl_msg *msg;
1418         struct phy_info_arg result = {
1419                 .num_modes = num_modes,
1420                 .modes = NULL,
1421                 .last_mode = -1,
1422         };
1423
1424         *num_modes = 0;
1425         *flags = 0;
1426
1427         msg = nlmsg_alloc();
1428         if (!msg)
1429                 return NULL;
1430
1431         feat = get_nl80211_protocol_features(drv);
1432         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1433                 nl_flags = NLM_F_DUMP;
1434         if (!nl80211_cmd(drv, msg, nl_flags, NL80211_CMD_GET_WIPHY) ||
1435             nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP) ||
1436             nl80211_set_iface_id(msg, bss) < 0) {
1437                 nlmsg_free(msg);
1438                 return NULL;
1439         }
1440
1441         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1442                 nl80211_set_regulatory_flags(drv, &result);
1443                 return wpa_driver_nl80211_postprocess_modes(result.modes,
1444                                                             num_modes);
1445         }
1446
1447         return NULL;
1448 }