1 /* 2 * Driver interaction with Linux nl80211/cfg80211 - Capabilities 3 * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi> 4 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net> 5 * Copyright (c) 2009-2010, Atheros Communications 6 * 7 * This software may be distributed under the terms of the BSD license. 8 * See README for more details. 9 */ 10 11 #include "includes.h" 12 #include <netlink/genl/genl.h> 13 14 #include "utils/common.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/ieee802_11_common.h" 17 #include "common/qca-vendor.h" 18 #include "common/qca-vendor-attr.h" 19 #include "driver_nl80211.h" 20 21 22 static int protocol_feature_handler(struct nl_msg *msg, void *arg) 23 { 24 u32 *feat = arg; 25 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 26 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 27 28 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 29 genlmsg_attrlen(gnlh, 0), NULL); 30 31 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 32 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 33 34 return NL_SKIP; 35 } 36 37 38 static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 39 { 40 u32 feat = 0; 41 struct nl_msg *msg; 42 43 msg = nlmsg_alloc(); 44 if (!msg) 45 return 0; 46 47 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES)) { 48 nlmsg_free(msg); 49 return 0; 50 } 51 52 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 53 return feat; 54 55 return 0; 56 } 57 58 59 struct wiphy_info_data { 60 struct wpa_driver_nl80211_data *drv; 61 struct wpa_driver_capa *capa; 62 63 unsigned int num_multichan_concurrent; 64 65 unsigned int error:1; 66 unsigned int device_ap_sme:1; 67 unsigned int poll_command_supported:1; 68 unsigned int data_tx_status:1; 69 unsigned int monitor_supported:1; 70 unsigned int auth_supported:1; 71 unsigned int connect_supported:1; 72 unsigned int p2p_go_supported:1; 73 unsigned int p2p_client_supported:1; 74 unsigned int p2p_go_ctwindow_supported:1; 75 unsigned int p2p_concurrent:1; 76 unsigned int channel_switch_supported:1; 77 unsigned int set_qos_map_supported:1; 78 unsigned int have_low_prio_scan:1; 79 unsigned int wmm_ac_supported:1; 80 unsigned int mac_addr_rand_scan_supported:1; 81 unsigned int mac_addr_rand_sched_scan_supported:1; 82 }; 83 84 85 static unsigned int probe_resp_offload_support(int supp_protocols) 86 { 87 unsigned int prot = 0; 88 89 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 90 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 91 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 92 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 93 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 94 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 95 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 96 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 97 98 return prot; 99 } 100 101 102 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 103 struct nlattr *tb) 104 { 105 struct nlattr *nl_mode; 106 int i; 107 108 if (tb == NULL) 109 return; 110 111 nla_for_each_nested(nl_mode, tb, i) { 112 switch (nla_type(nl_mode)) { 113 case NL80211_IFTYPE_AP: 114 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 115 break; 116 case NL80211_IFTYPE_MESH_POINT: 117 info->capa->flags |= WPA_DRIVER_FLAGS_MESH; 118 break; 119 case NL80211_IFTYPE_ADHOC: 120 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 121 break; 122 case NL80211_IFTYPE_P2P_DEVICE: 123 info->capa->flags |= 124 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE; 125 break; 126 case NL80211_IFTYPE_P2P_GO: 127 info->p2p_go_supported = 1; 128 break; 129 case NL80211_IFTYPE_P2P_CLIENT: 130 info->p2p_client_supported = 1; 131 break; 132 case NL80211_IFTYPE_MONITOR: 133 info->monitor_supported = 1; 134 break; 135 } 136 } 137 } 138 139 140 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 141 struct nlattr *nl_combi) 142 { 143 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 144 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 145 struct nlattr *nl_limit, *nl_mode; 146 int err, rem_limit, rem_mode; 147 int combination_has_p2p = 0, combination_has_mgd = 0; 148 static struct nla_policy 149 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 150 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 151 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 152 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 153 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 154 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 }, 155 }, 156 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 157 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 158 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 159 }; 160 161 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 162 nl_combi, iface_combination_policy); 163 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 164 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 165 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 166 return 0; /* broken combination */ 167 168 if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]) 169 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR; 170 171 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 172 rem_limit) { 173 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 174 nl_limit, iface_limit_policy); 175 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 176 return 0; /* broken combination */ 177 178 nla_for_each_nested(nl_mode, 179 tb_limit[NL80211_IFACE_LIMIT_TYPES], 180 rem_mode) { 181 int ift = nla_type(nl_mode); 182 if (ift == NL80211_IFTYPE_P2P_GO || 183 ift == NL80211_IFTYPE_P2P_CLIENT) 184 combination_has_p2p = 1; 185 if (ift == NL80211_IFTYPE_STATION) 186 combination_has_mgd = 1; 187 } 188 if (combination_has_p2p && combination_has_mgd) 189 break; 190 } 191 192 if (combination_has_p2p && combination_has_mgd) { 193 unsigned int num_channels = 194 nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]); 195 196 info->p2p_concurrent = 1; 197 if (info->num_multichan_concurrent < num_channels) 198 info->num_multichan_concurrent = num_channels; 199 } 200 201 return 0; 202 } 203 204 205 static void wiphy_info_iface_comb(struct wiphy_info_data *info, 206 struct nlattr *tb) 207 { 208 struct nlattr *nl_combi; 209 int rem_combi; 210 211 if (tb == NULL) 212 return; 213 214 nla_for_each_nested(nl_combi, tb, rem_combi) { 215 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 216 break; 217 } 218 } 219 220 221 static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 222 struct nlattr *tb) 223 { 224 struct nlattr *nl_cmd; 225 int i; 226 227 if (tb == NULL) 228 return; 229 230 nla_for_each_nested(nl_cmd, tb, i) { 231 switch (nla_get_u32(nl_cmd)) { 232 case NL80211_CMD_AUTHENTICATE: 233 info->auth_supported = 1; 234 break; 235 case NL80211_CMD_CONNECT: 236 info->connect_supported = 1; 237 break; 238 case NL80211_CMD_START_SCHED_SCAN: 239 info->capa->sched_scan_supported = 1; 240 break; 241 case NL80211_CMD_PROBE_CLIENT: 242 info->poll_command_supported = 1; 243 break; 244 case NL80211_CMD_CHANNEL_SWITCH: 245 info->channel_switch_supported = 1; 246 break; 247 case NL80211_CMD_SET_QOS_MAP: 248 info->set_qos_map_supported = 1; 249 break; 250 } 251 } 252 } 253 254 255 static void wiphy_info_cipher_suites(struct wiphy_info_data *info, 256 struct nlattr *tb) 257 { 258 int i, num; 259 u32 *ciphers; 260 261 if (tb == NULL) 262 return; 263 264 num = nla_len(tb) / sizeof(u32); 265 ciphers = nla_data(tb); 266 for (i = 0; i < num; i++) { 267 u32 c = ciphers[i]; 268 269 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d", 270 c >> 24, (c >> 16) & 0xff, 271 (c >> 8) & 0xff, c & 0xff); 272 switch (c) { 273 case WLAN_CIPHER_SUITE_CCMP_256: 274 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256; 275 break; 276 case WLAN_CIPHER_SUITE_GCMP_256: 277 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256; 278 break; 279 case WLAN_CIPHER_SUITE_CCMP: 280 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP; 281 break; 282 case WLAN_CIPHER_SUITE_GCMP: 283 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP; 284 break; 285 case WLAN_CIPHER_SUITE_TKIP: 286 info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP; 287 break; 288 case WLAN_CIPHER_SUITE_WEP104: 289 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104; 290 break; 291 case WLAN_CIPHER_SUITE_WEP40: 292 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40; 293 break; 294 case WLAN_CIPHER_SUITE_AES_CMAC: 295 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP; 296 break; 297 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 298 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128; 299 break; 300 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 301 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256; 302 break; 303 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 304 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256; 305 break; 306 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR: 307 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED; 308 break; 309 } 310 } 311 } 312 313 314 static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 315 struct nlattr *tb) 316 { 317 if (tb) 318 capa->max_remain_on_chan = nla_get_u32(tb); 319 } 320 321 322 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 323 struct nlattr *ext_setup) 324 { 325 if (tdls == NULL) 326 return; 327 328 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 329 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 330 331 if (ext_setup) { 332 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 333 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 334 } 335 } 336 337 338 static int ext_feature_isset(const u8 *ext_features, int ext_features_len, 339 enum nl80211_ext_feature_index ftidx) 340 { 341 u8 ft_byte; 342 343 if ((int) ftidx / 8 >= ext_features_len) 344 return 0; 345 346 ft_byte = ext_features[ftidx / 8]; 347 return (ft_byte & BIT(ftidx % 8)) != 0; 348 } 349 350 351 static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info, 352 struct nlattr *tb) 353 { 354 struct wpa_driver_capa *capa = info->capa; 355 356 if (tb == NULL) 357 return; 358 359 if (ext_feature_isset(nla_data(tb), nla_len(tb), 360 NL80211_EXT_FEATURE_VHT_IBSS)) 361 capa->flags |= WPA_DRIVER_FLAGS_VHT_IBSS; 362 } 363 364 365 static void wiphy_info_feature_flags(struct wiphy_info_data *info, 366 struct nlattr *tb) 367 { 368 u32 flags; 369 struct wpa_driver_capa *capa = info->capa; 370 371 if (tb == NULL) 372 return; 373 374 flags = nla_get_u32(tb); 375 376 if (flags & NL80211_FEATURE_SK_TX_STATUS) 377 info->data_tx_status = 1; 378 379 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 380 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 381 382 if (flags & NL80211_FEATURE_SAE) 383 capa->flags |= WPA_DRIVER_FLAGS_SAE; 384 385 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 386 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 387 388 if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE) 389 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX; 390 391 if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) { 392 wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch"); 393 capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH; 394 } 395 396 if (flags & NL80211_FEATURE_P2P_GO_CTWIN) 397 info->p2p_go_ctwindow_supported = 1; 398 399 if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN) 400 info->have_low_prio_scan = 1; 401 402 if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR) 403 info->mac_addr_rand_scan_supported = 1; 404 405 if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR) 406 info->mac_addr_rand_sched_scan_supported = 1; 407 408 if (flags & NL80211_FEATURE_STATIC_SMPS) 409 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC; 410 411 if (flags & NL80211_FEATURE_DYNAMIC_SMPS) 412 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC; 413 414 if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 415 info->wmm_ac_supported = 1; 416 417 if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) 418 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES; 419 420 if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES) 421 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES; 422 423 if (flags & NL80211_FEATURE_QUIET) 424 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET; 425 426 if (flags & NL80211_FEATURE_TX_POWER_INSERTION) 427 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION; 428 429 if (flags & NL80211_FEATURE_HT_IBSS) 430 capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS; 431 } 432 433 434 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 435 struct nlattr *tb) 436 { 437 u32 protocols; 438 439 if (tb == NULL) 440 return; 441 442 protocols = nla_get_u32(tb); 443 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 444 "mode"); 445 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 446 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 447 } 448 449 450 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa, 451 struct nlattr *tb) 452 { 453 struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1]; 454 455 if (tb == NULL) 456 return; 457 458 if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG, 459 tb, NULL)) 460 return; 461 462 if (triggers[NL80211_WOWLAN_TRIG_ANY]) 463 capa->wowlan_triggers.any = 1; 464 if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT]) 465 capa->wowlan_triggers.disconnect = 1; 466 if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT]) 467 capa->wowlan_triggers.magic_pkt = 1; 468 if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) 469 capa->wowlan_triggers.gtk_rekey_failure = 1; 470 if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) 471 capa->wowlan_triggers.eap_identity_req = 1; 472 if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) 473 capa->wowlan_triggers.four_way_handshake = 1; 474 if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) 475 capa->wowlan_triggers.rfkill_release = 1; 476 } 477 478 479 static int wiphy_info_handler(struct nl_msg *msg, void *arg) 480 { 481 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 482 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 483 struct wiphy_info_data *info = arg; 484 struct wpa_driver_capa *capa = info->capa; 485 struct wpa_driver_nl80211_data *drv = info->drv; 486 487 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 488 genlmsg_attrlen(gnlh, 0), NULL); 489 490 if (tb[NL80211_ATTR_WIPHY_NAME]) 491 os_strlcpy(drv->phyname, 492 nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]), 493 sizeof(drv->phyname)); 494 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 495 capa->max_scan_ssids = 496 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 497 498 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 499 capa->max_sched_scan_ssids = 500 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 501 502 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 503 capa->max_match_sets = 504 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 505 506 if (tb[NL80211_ATTR_MAC_ACL_MAX]) 507 capa->max_acl_mac_addrs = 508 nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]); 509 510 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 511 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 512 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 513 wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]); 514 515 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 516 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 517 "off-channel TX"); 518 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 519 } 520 521 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 522 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 523 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 524 } 525 526 wiphy_info_max_roc(capa, 527 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 528 529 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 530 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 531 532 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 533 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 534 535 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 536 info->device_ap_sme = 1; 537 538 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 539 wiphy_info_ext_feature_flags(info, tb[NL80211_ATTR_EXT_FEATURES]); 540 wiphy_info_probe_resp_offload(capa, 541 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 542 543 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 544 drv->extended_capa == NULL) { 545 drv->extended_capa = 546 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 547 if (drv->extended_capa) { 548 os_memcpy(drv->extended_capa, 549 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 550 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 551 drv->extended_capa_len = 552 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 553 } 554 drv->extended_capa_mask = 555 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK])); 556 if (drv->extended_capa_mask) { 557 os_memcpy(drv->extended_capa_mask, 558 nla_data(tb[NL80211_ATTR_EXT_CAPA_MASK]), 559 nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK])); 560 } else { 561 os_free(drv->extended_capa); 562 drv->extended_capa = NULL; 563 drv->extended_capa_len = 0; 564 } 565 } 566 567 if (tb[NL80211_ATTR_VENDOR_DATA]) { 568 struct nlattr *nl; 569 int rem; 570 571 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) { 572 struct nl80211_vendor_cmd_info *vinfo; 573 if (nla_len(nl) != sizeof(*vinfo)) { 574 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 575 continue; 576 } 577 vinfo = nla_data(nl); 578 if (vinfo->vendor_id == OUI_QCA) { 579 switch (vinfo->subcmd) { 580 case QCA_NL80211_VENDOR_SUBCMD_TEST: 581 drv->vendor_cmd_test_avail = 1; 582 break; 583 case QCA_NL80211_VENDOR_SUBCMD_ROAMING: 584 drv->roaming_vendor_cmd_avail = 1; 585 break; 586 case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY: 587 drv->dfs_vendor_cmd_avail = 1; 588 break; 589 case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES: 590 drv->get_features_vendor_cmd_avail = 1; 591 break; 592 case QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST: 593 drv->get_pref_freq_list = 1; 594 break; 595 case QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL: 596 drv->set_prob_oper_freq = 1; 597 break; 598 case QCA_NL80211_VENDOR_SUBCMD_DO_ACS: 599 drv->capa.flags |= 600 WPA_DRIVER_FLAGS_ACS_OFFLOAD; 601 break; 602 case QCA_NL80211_VENDOR_SUBCMD_SETBAND: 603 drv->setband_vendor_cmd_avail = 1; 604 break; 605 } 606 } 607 608 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u", 609 vinfo->vendor_id, vinfo->subcmd); 610 } 611 } 612 613 if (tb[NL80211_ATTR_VENDOR_EVENTS]) { 614 struct nlattr *nl; 615 int rem; 616 617 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) { 618 struct nl80211_vendor_cmd_info *vinfo; 619 if (nla_len(nl) != sizeof(*vinfo)) { 620 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 621 continue; 622 } 623 vinfo = nla_data(nl); 624 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u", 625 vinfo->vendor_id, vinfo->subcmd); 626 } 627 } 628 629 wiphy_info_wowlan_triggers(capa, 630 tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]); 631 632 if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA]) 633 capa->max_stations = 634 nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]); 635 636 return NL_SKIP; 637 } 638 639 640 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 641 struct wiphy_info_data *info) 642 { 643 u32 feat; 644 struct nl_msg *msg; 645 int flags = 0; 646 647 os_memset(info, 0, sizeof(*info)); 648 info->capa = &drv->capa; 649 info->drv = drv; 650 651 feat = get_nl80211_protocol_features(drv); 652 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 653 flags = NLM_F_DUMP; 654 msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY); 655 if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { 656 nlmsg_free(msg); 657 return -1; 658 } 659 660 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 661 return -1; 662 663 if (info->auth_supported) 664 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 665 else if (!info->connect_supported) { 666 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 667 "authentication/association or connect commands"); 668 info->error = 1; 669 } 670 671 if (info->p2p_go_supported && info->p2p_client_supported) 672 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 673 if (info->p2p_concurrent) { 674 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 675 "interface (driver advertised support)"); 676 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 677 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 678 } 679 if (info->num_multichan_concurrent > 1) { 680 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 681 "concurrent (driver advertised support)"); 682 drv->capa.num_multichan_concurrent = 683 info->num_multichan_concurrent; 684 } 685 if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) 686 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support"); 687 688 /* default to 5000 since early versions of mac80211 don't set it */ 689 if (!drv->capa.max_remain_on_chan) 690 drv->capa.max_remain_on_chan = 5000; 691 692 if (info->channel_switch_supported) 693 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA; 694 drv->capa.wmm_ac_supported = info->wmm_ac_supported; 695 696 drv->capa.mac_addr_rand_sched_scan_supported = 697 info->mac_addr_rand_sched_scan_supported; 698 drv->capa.mac_addr_rand_scan_supported = 699 info->mac_addr_rand_scan_supported; 700 701 return 0; 702 } 703 704 705 static int dfs_info_handler(struct nl_msg *msg, void *arg) 706 { 707 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 708 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 709 int *dfs_capability_ptr = arg; 710 711 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 712 genlmsg_attrlen(gnlh, 0), NULL); 713 714 if (tb[NL80211_ATTR_VENDOR_DATA]) { 715 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; 716 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; 717 718 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, 719 nla_data(nl_vend), nla_len(nl_vend), NULL); 720 721 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) { 722 u32 val; 723 val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]); 724 wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u", 725 val); 726 *dfs_capability_ptr = val; 727 } 728 } 729 730 return NL_SKIP; 731 } 732 733 734 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv) 735 { 736 struct nl_msg *msg; 737 int dfs_capability = 0; 738 int ret; 739 740 if (!drv->dfs_vendor_cmd_avail) 741 return; 742 743 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 744 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 745 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 746 QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) { 747 nlmsg_free(msg); 748 return; 749 } 750 751 ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability); 752 if (!ret && dfs_capability) 753 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD; 754 } 755 756 757 struct features_info { 758 u8 *flags; 759 size_t flags_len; 760 struct wpa_driver_capa *capa; 761 }; 762 763 764 static int features_info_handler(struct nl_msg *msg, void *arg) 765 { 766 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 767 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 768 struct features_info *info = arg; 769 struct nlattr *nl_vend, *attr; 770 771 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 772 genlmsg_attrlen(gnlh, 0), NULL); 773 774 nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; 775 if (nl_vend) { 776 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; 777 778 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, 779 nla_data(nl_vend), nla_len(nl_vend), NULL); 780 781 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS]; 782 if (attr) { 783 info->flags = nla_data(attr); 784 info->flags_len = nla_len(attr); 785 } 786 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_CONCURRENCY_CAPA]; 787 if (attr) 788 info->capa->conc_capab = nla_get_u32(attr); 789 790 attr = tb_vendor[ 791 QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_2_4_BAND]; 792 if (attr) 793 info->capa->max_conc_chan_2_4 = nla_get_u32(attr); 794 795 attr = tb_vendor[ 796 QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_5_0_BAND]; 797 if (attr) 798 info->capa->max_conc_chan_5_0 = nla_get_u32(attr); 799 } 800 801 return NL_SKIP; 802 } 803 804 805 static int check_feature(enum qca_wlan_vendor_features feature, 806 struct features_info *info) 807 { 808 size_t idx = feature / 8; 809 810 return (idx < info->flags_len) && 811 (info->flags[idx] & BIT(feature % 8)); 812 } 813 814 815 static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv) 816 { 817 struct nl_msg *msg; 818 struct features_info info; 819 int ret; 820 821 if (!drv->get_features_vendor_cmd_avail) 822 return; 823 824 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 825 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 826 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 827 QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) { 828 nlmsg_free(msg); 829 return; 830 } 831 832 os_memset(&info, 0, sizeof(info)); 833 info.capa = &drv->capa; 834 ret = send_and_recv_msgs(drv, msg, features_info_handler, &info); 835 if (ret || !info.flags) 836 return; 837 838 if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info)) 839 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD; 840 841 if (check_feature(QCA_WLAN_VENDOR_FEATURE_SUPPORT_HW_MODE_ANY, &info)) 842 drv->capa.flags |= WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY; 843 } 844 845 846 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 847 { 848 struct wiphy_info_data info; 849 if (wpa_driver_nl80211_get_info(drv, &info)) 850 return -1; 851 852 if (info.error) 853 return -1; 854 855 drv->has_capability = 1; 856 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 857 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 858 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 859 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK | 860 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B | 861 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192; 862 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 863 WPA_DRIVER_AUTH_SHARED | 864 WPA_DRIVER_AUTH_LEAP; 865 866 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 867 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 868 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 869 870 /* 871 * As all cfg80211 drivers must support cases where the AP interface is 872 * removed without the knowledge of wpa_supplicant/hostapd, e.g., in 873 * case that the user space daemon has crashed, they must be able to 874 * cleanup all stations and key entries in the AP tear down flow. Thus, 875 * this flag can/should always be set for cfg80211 drivers. 876 */ 877 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT; 878 879 if (!info.device_ap_sme) { 880 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 881 882 /* 883 * No AP SME is currently assumed to also indicate no AP MLME 884 * in the driver/firmware. 885 */ 886 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 887 } 888 889 drv->device_ap_sme = info.device_ap_sme; 890 drv->poll_command_supported = info.poll_command_supported; 891 drv->data_tx_status = info.data_tx_status; 892 drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported; 893 if (info.set_qos_map_supported) 894 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING; 895 drv->have_low_prio_scan = info.have_low_prio_scan; 896 897 /* 898 * If poll command and tx status are supported, mac80211 is new enough 899 * to have everything we need to not need monitor interfaces. 900 */ 901 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 902 903 if (drv->device_ap_sme && drv->use_monitor) { 904 /* 905 * Non-mac80211 drivers may not support monitor interface. 906 * Make sure we do not get stuck with incorrect capability here 907 * by explicitly testing this. 908 */ 909 if (!info.monitor_supported) { 910 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 911 "with device_ap_sme since no monitor mode " 912 "support detected"); 913 drv->use_monitor = 0; 914 } 915 } 916 917 /* 918 * If we aren't going to use monitor interfaces, but the 919 * driver doesn't support data TX status, we won't get TX 920 * status for EAPOL frames. 921 */ 922 if (!drv->use_monitor && !info.data_tx_status) 923 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 924 925 qca_nl80211_check_dfs_capa(drv); 926 qca_nl80211_get_features(drv); 927 928 return 0; 929 } 930 931 932 struct phy_info_arg { 933 u16 *num_modes; 934 struct hostapd_hw_modes *modes; 935 int last_mode, last_chan_idx; 936 }; 937 938 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 939 struct nlattr *ampdu_factor, 940 struct nlattr *ampdu_density, 941 struct nlattr *mcs_set) 942 { 943 if (capa) 944 mode->ht_capab = nla_get_u16(capa); 945 946 if (ampdu_factor) 947 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 948 949 if (ampdu_density) 950 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 951 952 if (mcs_set && nla_len(mcs_set) >= 16) { 953 u8 *mcs; 954 mcs = nla_data(mcs_set); 955 os_memcpy(mode->mcs_set, mcs, 16); 956 } 957 } 958 959 960 static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 961 struct nlattr *capa, 962 struct nlattr *mcs_set) 963 { 964 if (capa) 965 mode->vht_capab = nla_get_u32(capa); 966 967 if (mcs_set && nla_len(mcs_set) >= 8) { 968 u8 *mcs; 969 mcs = nla_data(mcs_set); 970 os_memcpy(mode->vht_mcs_set, mcs, 8); 971 } 972 } 973 974 975 static void phy_info_freq(struct hostapd_hw_modes *mode, 976 struct hostapd_channel_data *chan, 977 struct nlattr *tb_freq[]) 978 { 979 u8 channel; 980 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 981 chan->flag = 0; 982 chan->dfs_cac_ms = 0; 983 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) 984 chan->chan = channel; 985 986 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 987 chan->flag |= HOSTAPD_CHAN_DISABLED; 988 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR]) 989 chan->flag |= HOSTAPD_CHAN_NO_IR; 990 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 991 chan->flag |= HOSTAPD_CHAN_RADAR; 992 if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY]) 993 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY; 994 if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT]) 995 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT; 996 997 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) { 998 enum nl80211_dfs_state state = 999 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]); 1000 1001 switch (state) { 1002 case NL80211_DFS_USABLE: 1003 chan->flag |= HOSTAPD_CHAN_DFS_USABLE; 1004 break; 1005 case NL80211_DFS_AVAILABLE: 1006 chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE; 1007 break; 1008 case NL80211_DFS_UNAVAILABLE: 1009 chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE; 1010 break; 1011 } 1012 } 1013 1014 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) { 1015 chan->dfs_cac_ms = nla_get_u32( 1016 tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]); 1017 } 1018 } 1019 1020 1021 static int phy_info_freqs(struct phy_info_arg *phy_info, 1022 struct hostapd_hw_modes *mode, struct nlattr *tb) 1023 { 1024 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 1025 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 1026 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 1027 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG }, 1028 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 1029 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 1030 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 }, 1031 }; 1032 int new_channels = 0; 1033 struct hostapd_channel_data *channel; 1034 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 1035 struct nlattr *nl_freq; 1036 int rem_freq, idx; 1037 1038 if (tb == NULL) 1039 return NL_OK; 1040 1041 nla_for_each_nested(nl_freq, tb, rem_freq) { 1042 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 1043 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 1044 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 1045 continue; 1046 new_channels++; 1047 } 1048 1049 channel = os_realloc_array(mode->channels, 1050 mode->num_channels + new_channels, 1051 sizeof(struct hostapd_channel_data)); 1052 if (!channel) 1053 return NL_SKIP; 1054 1055 mode->channels = channel; 1056 mode->num_channels += new_channels; 1057 1058 idx = phy_info->last_chan_idx; 1059 1060 nla_for_each_nested(nl_freq, tb, rem_freq) { 1061 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 1062 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 1063 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 1064 continue; 1065 phy_info_freq(mode, &mode->channels[idx], tb_freq); 1066 idx++; 1067 } 1068 phy_info->last_chan_idx = idx; 1069 1070 return NL_OK; 1071 } 1072 1073 1074 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 1075 { 1076 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 1077 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 1078 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 1079 { .type = NLA_FLAG }, 1080 }; 1081 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 1082 struct nlattr *nl_rate; 1083 int rem_rate, idx; 1084 1085 if (tb == NULL) 1086 return NL_OK; 1087 1088 nla_for_each_nested(nl_rate, tb, rem_rate) { 1089 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 1090 nla_data(nl_rate), nla_len(nl_rate), 1091 rate_policy); 1092 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 1093 continue; 1094 mode->num_rates++; 1095 } 1096 1097 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 1098 if (!mode->rates) 1099 return NL_SKIP; 1100 1101 idx = 0; 1102 1103 nla_for_each_nested(nl_rate, tb, rem_rate) { 1104 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 1105 nla_data(nl_rate), nla_len(nl_rate), 1106 rate_policy); 1107 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 1108 continue; 1109 mode->rates[idx] = nla_get_u32( 1110 tb_rate[NL80211_BITRATE_ATTR_RATE]); 1111 idx++; 1112 } 1113 1114 return NL_OK; 1115 } 1116 1117 1118 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 1119 { 1120 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 1121 struct hostapd_hw_modes *mode; 1122 int ret; 1123 1124 if (phy_info->last_mode != nl_band->nla_type) { 1125 mode = os_realloc_array(phy_info->modes, 1126 *phy_info->num_modes + 1, 1127 sizeof(*mode)); 1128 if (!mode) 1129 return NL_SKIP; 1130 phy_info->modes = mode; 1131 1132 mode = &phy_info->modes[*(phy_info->num_modes)]; 1133 os_memset(mode, 0, sizeof(*mode)); 1134 mode->mode = NUM_HOSTAPD_MODES; 1135 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN | 1136 HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN; 1137 1138 /* 1139 * Unsupported VHT MCS stream is defined as value 3, so the VHT 1140 * MCS RX/TX map must be initialized with 0xffff to mark all 8 1141 * possible streams as unsupported. This will be overridden if 1142 * driver advertises VHT support. 1143 */ 1144 mode->vht_mcs_set[0] = 0xff; 1145 mode->vht_mcs_set[1] = 0xff; 1146 mode->vht_mcs_set[4] = 0xff; 1147 mode->vht_mcs_set[5] = 0xff; 1148 1149 *(phy_info->num_modes) += 1; 1150 phy_info->last_mode = nl_band->nla_type; 1151 phy_info->last_chan_idx = 0; 1152 } else 1153 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 1154 1155 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 1156 nla_len(nl_band), NULL); 1157 1158 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 1159 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 1160 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 1161 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 1162 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 1163 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 1164 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 1165 if (ret != NL_OK) 1166 return ret; 1167 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 1168 if (ret != NL_OK) 1169 return ret; 1170 1171 return NL_OK; 1172 } 1173 1174 1175 static int phy_info_handler(struct nl_msg *msg, void *arg) 1176 { 1177 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1178 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1179 struct phy_info_arg *phy_info = arg; 1180 struct nlattr *nl_band; 1181 int rem_band; 1182 1183 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1184 genlmsg_attrlen(gnlh, 0), NULL); 1185 1186 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 1187 return NL_SKIP; 1188 1189 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 1190 { 1191 int res = phy_info_band(phy_info, nl_band); 1192 if (res != NL_OK) 1193 return res; 1194 } 1195 1196 return NL_SKIP; 1197 } 1198 1199 1200 static struct hostapd_hw_modes * 1201 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 1202 u16 *num_modes) 1203 { 1204 u16 m; 1205 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 1206 int i, mode11g_idx = -1; 1207 1208 /* heuristic to set up modes */ 1209 for (m = 0; m < *num_modes; m++) { 1210 if (!modes[m].num_channels) 1211 continue; 1212 if (modes[m].channels[0].freq < 4000) { 1213 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 1214 for (i = 0; i < modes[m].num_rates; i++) { 1215 if (modes[m].rates[i] > 200) { 1216 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 1217 break; 1218 } 1219 } 1220 } else if (modes[m].channels[0].freq > 50000) 1221 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 1222 else 1223 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 1224 } 1225 1226 /* If only 802.11g mode is included, use it to construct matching 1227 * 802.11b mode data. */ 1228 1229 for (m = 0; m < *num_modes; m++) { 1230 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 1231 return modes; /* 802.11b already included */ 1232 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1233 mode11g_idx = m; 1234 } 1235 1236 if (mode11g_idx < 0) 1237 return modes; /* 2.4 GHz band not supported at all */ 1238 1239 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 1240 if (nmodes == NULL) 1241 return modes; /* Could not add 802.11b mode */ 1242 1243 mode = &nmodes[*num_modes]; 1244 os_memset(mode, 0, sizeof(*mode)); 1245 (*num_modes)++; 1246 modes = nmodes; 1247 1248 mode->mode = HOSTAPD_MODE_IEEE80211B; 1249 1250 mode11g = &modes[mode11g_idx]; 1251 mode->num_channels = mode11g->num_channels; 1252 mode->channels = os_malloc(mode11g->num_channels * 1253 sizeof(struct hostapd_channel_data)); 1254 if (mode->channels == NULL) { 1255 (*num_modes)--; 1256 return modes; /* Could not add 802.11b mode */ 1257 } 1258 os_memcpy(mode->channels, mode11g->channels, 1259 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 1260 1261 mode->num_rates = 0; 1262 mode->rates = os_malloc(4 * sizeof(int)); 1263 if (mode->rates == NULL) { 1264 os_free(mode->channels); 1265 (*num_modes)--; 1266 return modes; /* Could not add 802.11b mode */ 1267 } 1268 1269 for (i = 0; i < mode11g->num_rates; i++) { 1270 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 1271 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 1272 continue; 1273 mode->rates[mode->num_rates] = mode11g->rates[i]; 1274 mode->num_rates++; 1275 if (mode->num_rates == 4) 1276 break; 1277 } 1278 1279 if (mode->num_rates == 0) { 1280 os_free(mode->channels); 1281 os_free(mode->rates); 1282 (*num_modes)--; 1283 return modes; /* No 802.11b rates */ 1284 } 1285 1286 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 1287 "information"); 1288 1289 return modes; 1290 } 1291 1292 1293 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 1294 int end) 1295 { 1296 int c; 1297 1298 for (c = 0; c < mode->num_channels; c++) { 1299 struct hostapd_channel_data *chan = &mode->channels[c]; 1300 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 1301 chan->flag |= HOSTAPD_CHAN_HT40; 1302 } 1303 } 1304 1305 1306 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 1307 int end) 1308 { 1309 int c; 1310 1311 for (c = 0; c < mode->num_channels; c++) { 1312 struct hostapd_channel_data *chan = &mode->channels[c]; 1313 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 1314 continue; 1315 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 1316 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 1317 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 1318 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 1319 } 1320 } 1321 1322 1323 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp, 1324 struct phy_info_arg *results) 1325 { 1326 u16 m; 1327 1328 for (m = 0; m < *results->num_modes; m++) { 1329 int c; 1330 struct hostapd_hw_modes *mode = &results->modes[m]; 1331 1332 for (c = 0; c < mode->num_channels; c++) { 1333 struct hostapd_channel_data *chan = &mode->channels[c]; 1334 if ((u32) chan->freq - 10 >= start && 1335 (u32) chan->freq + 10 <= end) 1336 chan->max_tx_power = max_eirp; 1337 } 1338 } 1339 } 1340 1341 1342 static void nl80211_reg_rule_ht40(u32 start, u32 end, 1343 struct phy_info_arg *results) 1344 { 1345 u16 m; 1346 1347 for (m = 0; m < *results->num_modes; m++) { 1348 if (!(results->modes[m].ht_capab & 1349 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1350 continue; 1351 nl80211_set_ht40_mode(&results->modes[m], start, end); 1352 } 1353 } 1354 1355 1356 static void nl80211_reg_rule_sec(struct nlattr *tb[], 1357 struct phy_info_arg *results) 1358 { 1359 u32 start, end, max_bw; 1360 u16 m; 1361 1362 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1363 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 1364 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 1365 return; 1366 1367 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1368 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1369 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1370 1371 if (max_bw < 20) 1372 return; 1373 1374 for (m = 0; m < *results->num_modes; m++) { 1375 if (!(results->modes[m].ht_capab & 1376 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1377 continue; 1378 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 1379 } 1380 } 1381 1382 1383 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start, 1384 int end) 1385 { 1386 int c; 1387 1388 for (c = 0; c < mode->num_channels; c++) { 1389 struct hostapd_channel_data *chan = &mode->channels[c]; 1390 if (chan->freq - 10 >= start && chan->freq + 70 <= end) 1391 chan->flag |= HOSTAPD_CHAN_VHT_10_70; 1392 1393 if (chan->freq - 30 >= start && chan->freq + 50 <= end) 1394 chan->flag |= HOSTAPD_CHAN_VHT_30_50; 1395 1396 if (chan->freq - 50 >= start && chan->freq + 30 <= end) 1397 chan->flag |= HOSTAPD_CHAN_VHT_50_30; 1398 1399 if (chan->freq - 70 >= start && chan->freq + 10 <= end) 1400 chan->flag |= HOSTAPD_CHAN_VHT_70_10; 1401 } 1402 } 1403 1404 1405 static void nl80211_reg_rule_vht(struct nlattr *tb[], 1406 struct phy_info_arg *results) 1407 { 1408 u32 start, end, max_bw; 1409 u16 m; 1410 1411 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1412 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 1413 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 1414 return; 1415 1416 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1417 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1418 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1419 1420 if (max_bw < 80) 1421 return; 1422 1423 for (m = 0; m < *results->num_modes; m++) { 1424 if (!(results->modes[m].ht_capab & 1425 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1426 continue; 1427 /* TODO: use a real VHT support indication */ 1428 if (!results->modes[m].vht_capab) 1429 continue; 1430 1431 nl80211_set_vht_mode(&results->modes[m], start, end); 1432 } 1433 } 1434 1435 1436 static const char * dfs_domain_name(enum nl80211_dfs_regions region) 1437 { 1438 switch (region) { 1439 case NL80211_DFS_UNSET: 1440 return "DFS-UNSET"; 1441 case NL80211_DFS_FCC: 1442 return "DFS-FCC"; 1443 case NL80211_DFS_ETSI: 1444 return "DFS-ETSI"; 1445 case NL80211_DFS_JP: 1446 return "DFS-JP"; 1447 default: 1448 return "DFS-invalid"; 1449 } 1450 } 1451 1452 1453 static int nl80211_get_reg(struct nl_msg *msg, void *arg) 1454 { 1455 struct phy_info_arg *results = arg; 1456 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1457 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1458 struct nlattr *nl_rule; 1459 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 1460 int rem_rule; 1461 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 1462 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 1463 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 1464 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 1465 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 1466 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 1467 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 1468 }; 1469 1470 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1471 genlmsg_attrlen(gnlh, 0), NULL); 1472 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 1473 !tb_msg[NL80211_ATTR_REG_RULES]) { 1474 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 1475 "available"); 1476 return NL_SKIP; 1477 } 1478 1479 if (tb_msg[NL80211_ATTR_DFS_REGION]) { 1480 enum nl80211_dfs_regions dfs_domain; 1481 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]); 1482 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)", 1483 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 1484 dfs_domain_name(dfs_domain)); 1485 } else { 1486 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 1487 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 1488 } 1489 1490 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1491 { 1492 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0; 1493 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1494 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1495 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1496 tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL) 1497 continue; 1498 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1499 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1500 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 1501 max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100; 1502 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 1503 max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1504 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS]) 1505 flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]); 1506 1507 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s", 1508 start, end, max_bw, max_eirp, 1509 flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "", 1510 flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "", 1511 flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "", 1512 flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" : 1513 "", 1514 flags & NL80211_RRF_DFS ? " (DFS)" : "", 1515 flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "", 1516 flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "", 1517 flags & NL80211_RRF_NO_IR ? " (no IR)" : ""); 1518 if (max_bw >= 40) 1519 nl80211_reg_rule_ht40(start, end, results); 1520 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 1521 nl80211_reg_rule_max_eirp(start, end, max_eirp, 1522 results); 1523 } 1524 1525 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1526 { 1527 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1528 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1529 nl80211_reg_rule_sec(tb_rule, results); 1530 } 1531 1532 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1533 { 1534 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1535 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1536 nl80211_reg_rule_vht(tb_rule, results); 1537 } 1538 1539 return NL_SKIP; 1540 } 1541 1542 1543 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv, 1544 struct phy_info_arg *results) 1545 { 1546 struct nl_msg *msg; 1547 1548 msg = nlmsg_alloc(); 1549 if (!msg) 1550 return -ENOMEM; 1551 1552 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 1553 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 1554 } 1555 1556 1557 struct hostapd_hw_modes * 1558 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 1559 { 1560 u32 feat; 1561 struct i802_bss *bss = priv; 1562 struct wpa_driver_nl80211_data *drv = bss->drv; 1563 int nl_flags = 0; 1564 struct nl_msg *msg; 1565 struct phy_info_arg result = { 1566 .num_modes = num_modes, 1567 .modes = NULL, 1568 .last_mode = -1, 1569 }; 1570 1571 *num_modes = 0; 1572 *flags = 0; 1573 1574 feat = get_nl80211_protocol_features(drv); 1575 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 1576 nl_flags = NLM_F_DUMP; 1577 if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) || 1578 nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { 1579 nlmsg_free(msg); 1580 return NULL; 1581 } 1582 1583 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 1584 nl80211_set_regulatory_flags(drv, &result); 1585 return wpa_driver_nl80211_postprocess_modes(result.modes, 1586 num_modes); 1587 } 1588 1589 return NULL; 1590 } 1591