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 22static 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 38static 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 59struct 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 85static 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 102static 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 140static 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 205static 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 221static 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 255static 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 314static 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 322static 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 338static 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 351static 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 365static 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 434static 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 450static 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 479static 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_DO_ACS: 593 drv->capa.flags |= 594 WPA_DRIVER_FLAGS_ACS_OFFLOAD; 595 break; 596 } 597 } 598 599 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u", 600 vinfo->vendor_id, vinfo->subcmd); 601 } 602 } 603 604 if (tb[NL80211_ATTR_VENDOR_EVENTS]) { 605 struct nlattr *nl; 606 int rem; 607 608 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) { 609 struct nl80211_vendor_cmd_info *vinfo; 610 if (nla_len(nl) != sizeof(*vinfo)) { 611 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 612 continue; 613 } 614 vinfo = nla_data(nl); 615 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u", 616 vinfo->vendor_id, vinfo->subcmd); 617 } 618 } 619 620 wiphy_info_wowlan_triggers(capa, 621 tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]); 622 623 if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA]) 624 capa->max_stations = 625 nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]); 626 627 return NL_SKIP; 628} 629 630 631static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 632 struct wiphy_info_data *info) 633{ 634 u32 feat; 635 struct nl_msg *msg; 636 int flags = 0; 637 638 os_memset(info, 0, sizeof(*info)); 639 info->capa = &drv->capa; 640 info->drv = drv; 641 642 feat = get_nl80211_protocol_features(drv); 643 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 644 flags = NLM_F_DUMP; 645 msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY); 646 if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { 647 nlmsg_free(msg); 648 return -1; 649 } 650 651 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 652 return -1; 653 654 if (info->auth_supported) 655 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 656 else if (!info->connect_supported) { 657 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 658 "authentication/association or connect commands"); 659 info->error = 1; 660 } 661 662 if (info->p2p_go_supported && info->p2p_client_supported) 663 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 664 if (info->p2p_concurrent) { 665 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 666 "interface (driver advertised support)"); 667 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 668 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 669 } 670 if (info->num_multichan_concurrent > 1) { 671 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 672 "concurrent (driver advertised support)"); 673 drv->capa.num_multichan_concurrent = 674 info->num_multichan_concurrent; 675 } 676 if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) 677 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support"); 678 679 /* default to 5000 since early versions of mac80211 don't set it */ 680 if (!drv->capa.max_remain_on_chan) 681 drv->capa.max_remain_on_chan = 5000; 682 683 if (info->channel_switch_supported) 684 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA; 685 drv->capa.wmm_ac_supported = info->wmm_ac_supported; 686 687 drv->capa.mac_addr_rand_sched_scan_supported = 688 info->mac_addr_rand_sched_scan_supported; 689 drv->capa.mac_addr_rand_scan_supported = 690 info->mac_addr_rand_scan_supported; 691 692 return 0; 693} 694 695 696static int dfs_info_handler(struct nl_msg *msg, void *arg) 697{ 698 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 699 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 700 int *dfs_capability_ptr = arg; 701 702 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 703 genlmsg_attrlen(gnlh, 0), NULL); 704 705 if (tb[NL80211_ATTR_VENDOR_DATA]) { 706 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; 707 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; 708 709 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, 710 nla_data(nl_vend), nla_len(nl_vend), NULL); 711 712 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) { 713 u32 val; 714 val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]); 715 wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u", 716 val); 717 *dfs_capability_ptr = val; 718 } 719 } 720 721 return NL_SKIP; 722} 723 724 725static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv) 726{ 727 struct nl_msg *msg; 728 int dfs_capability = 0; 729 int ret; 730 731 if (!drv->dfs_vendor_cmd_avail) 732 return; 733 734 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 735 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 736 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 737 QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) { 738 nlmsg_free(msg); 739 return; 740 } 741 742 ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability); 743 if (!ret && dfs_capability) 744 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD; 745} 746 747 748struct features_info { 749 u8 *flags; 750 size_t flags_len; 751}; 752 753 754static int features_info_handler(struct nl_msg *msg, void *arg) 755{ 756 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 757 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 758 struct features_info *info = arg; 759 struct nlattr *nl_vend, *attr; 760 761 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 762 genlmsg_attrlen(gnlh, 0), NULL); 763 764 nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; 765 if (nl_vend) { 766 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; 767 768 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, 769 nla_data(nl_vend), nla_len(nl_vend), NULL); 770 771 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS]; 772 if (attr) { 773 info->flags = nla_data(attr); 774 info->flags_len = nla_len(attr); 775 } 776 } 777 778 return NL_SKIP; 779} 780 781 782static int check_feature(enum qca_wlan_vendor_features feature, 783 struct features_info *info) 784{ 785 size_t idx = feature / 8; 786 787 return (idx < info->flags_len) && 788 (info->flags[idx] & BIT(feature % 8)); 789} 790 791 792static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv) 793{ 794 struct nl_msg *msg; 795 struct features_info info; 796 int ret; 797 798 if (!drv->get_features_vendor_cmd_avail) 799 return; 800 801 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 802 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 803 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 804 QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) { 805 nlmsg_free(msg); 806 return; 807 } 808 809 os_memset(&info, 0, sizeof(info)); 810 ret = send_and_recv_msgs(drv, msg, features_info_handler, &info); 811 if (ret || !info.flags) 812 return; 813 814 if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info)) 815 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD; 816 817 if (check_feature(QCA_WLAN_VENDOR_FEATURE_SUPPORT_HW_MODE_ANY, &info)) 818 drv->capa.flags |= WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY; 819} 820 821 822int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 823{ 824 struct wiphy_info_data info; 825 if (wpa_driver_nl80211_get_info(drv, &info)) 826 return -1; 827 828 if (info.error) 829 return -1; 830 831 drv->has_capability = 1; 832 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 833 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 834 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 835 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK | 836 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B | 837 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192; 838 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 839 WPA_DRIVER_AUTH_SHARED | 840 WPA_DRIVER_AUTH_LEAP; 841 842 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 843 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 844 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 845 846 /* 847 * As all cfg80211 drivers must support cases where the AP interface is 848 * removed without the knowledge of wpa_supplicant/hostapd, e.g., in 849 * case that the user space daemon has crashed, they must be able to 850 * cleanup all stations and key entries in the AP tear down flow. Thus, 851 * this flag can/should always be set for cfg80211 drivers. 852 */ 853 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT; 854 855 if (!info.device_ap_sme) { 856 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 857 858 /* 859 * No AP SME is currently assumed to also indicate no AP MLME 860 * in the driver/firmware. 861 */ 862 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 863 } 864 865 drv->device_ap_sme = info.device_ap_sme; 866 drv->poll_command_supported = info.poll_command_supported; 867 drv->data_tx_status = info.data_tx_status; 868 drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported; 869 if (info.set_qos_map_supported) 870 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING; 871 drv->have_low_prio_scan = info.have_low_prio_scan; 872 873 /* 874 * If poll command and tx status are supported, mac80211 is new enough 875 * to have everything we need to not need monitor interfaces. 876 */ 877 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 878 879 if (drv->device_ap_sme && drv->use_monitor) { 880 /* 881 * Non-mac80211 drivers may not support monitor interface. 882 * Make sure we do not get stuck with incorrect capability here 883 * by explicitly testing this. 884 */ 885 if (!info.monitor_supported) { 886 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 887 "with device_ap_sme since no monitor mode " 888 "support detected"); 889 drv->use_monitor = 0; 890 } 891 } 892 893 /* 894 * If we aren't going to use monitor interfaces, but the 895 * driver doesn't support data TX status, we won't get TX 896 * status for EAPOL frames. 897 */ 898 if (!drv->use_monitor && !info.data_tx_status) 899 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 900 901 qca_nl80211_check_dfs_capa(drv); 902 qca_nl80211_get_features(drv); 903 904 return 0; 905} 906 907 908struct phy_info_arg { 909 u16 *num_modes; 910 struct hostapd_hw_modes *modes; 911 int last_mode, last_chan_idx; 912}; 913 914static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 915 struct nlattr *ampdu_factor, 916 struct nlattr *ampdu_density, 917 struct nlattr *mcs_set) 918{ 919 if (capa) 920 mode->ht_capab = nla_get_u16(capa); 921 922 if (ampdu_factor) 923 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 924 925 if (ampdu_density) 926 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 927 928 if (mcs_set && nla_len(mcs_set) >= 16) { 929 u8 *mcs; 930 mcs = nla_data(mcs_set); 931 os_memcpy(mode->mcs_set, mcs, 16); 932 } 933} 934 935 936static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 937 struct nlattr *capa, 938 struct nlattr *mcs_set) 939{ 940 if (capa) 941 mode->vht_capab = nla_get_u32(capa); 942 943 if (mcs_set && nla_len(mcs_set) >= 8) { 944 u8 *mcs; 945 mcs = nla_data(mcs_set); 946 os_memcpy(mode->vht_mcs_set, mcs, 8); 947 } 948} 949 950 951static void phy_info_freq(struct hostapd_hw_modes *mode, 952 struct hostapd_channel_data *chan, 953 struct nlattr *tb_freq[]) 954{ 955 u8 channel; 956 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 957 chan->flag = 0; 958 chan->dfs_cac_ms = 0; 959 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) 960 chan->chan = channel; 961 962 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 963 chan->flag |= HOSTAPD_CHAN_DISABLED; 964 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR]) 965 chan->flag |= HOSTAPD_CHAN_NO_IR; 966 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 967 chan->flag |= HOSTAPD_CHAN_RADAR; 968 if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY]) 969 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY; 970 if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT]) 971 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT; 972 973 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) { 974 enum nl80211_dfs_state state = 975 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]); 976 977 switch (state) { 978 case NL80211_DFS_USABLE: 979 chan->flag |= HOSTAPD_CHAN_DFS_USABLE; 980 break; 981 case NL80211_DFS_AVAILABLE: 982 chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE; 983 break; 984 case NL80211_DFS_UNAVAILABLE: 985 chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE; 986 break; 987 } 988 } 989 990 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) { 991 chan->dfs_cac_ms = nla_get_u32( 992 tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]); 993 } 994} 995 996 997static int phy_info_freqs(struct phy_info_arg *phy_info, 998 struct hostapd_hw_modes *mode, struct nlattr *tb) 999{ 1000 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 1001 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 1002 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 1003 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG }, 1004 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 1005 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 1006 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 }, 1007 }; 1008 int new_channels = 0; 1009 struct hostapd_channel_data *channel; 1010 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 1011 struct nlattr *nl_freq; 1012 int rem_freq, idx; 1013 1014 if (tb == NULL) 1015 return NL_OK; 1016 1017 nla_for_each_nested(nl_freq, tb, rem_freq) { 1018 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 1019 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 1020 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 1021 continue; 1022 new_channels++; 1023 } 1024 1025 channel = os_realloc_array(mode->channels, 1026 mode->num_channels + new_channels, 1027 sizeof(struct hostapd_channel_data)); 1028 if (!channel) 1029 return NL_SKIP; 1030 1031 mode->channels = channel; 1032 mode->num_channels += new_channels; 1033 1034 idx = phy_info->last_chan_idx; 1035 1036 nla_for_each_nested(nl_freq, tb, rem_freq) { 1037 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 1038 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 1039 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 1040 continue; 1041 phy_info_freq(mode, &mode->channels[idx], tb_freq); 1042 idx++; 1043 } 1044 phy_info->last_chan_idx = idx; 1045 1046 return NL_OK; 1047} 1048 1049 1050static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 1051{ 1052 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 1053 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 1054 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 1055 { .type = NLA_FLAG }, 1056 }; 1057 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 1058 struct nlattr *nl_rate; 1059 int rem_rate, idx; 1060 1061 if (tb == NULL) 1062 return NL_OK; 1063 1064 nla_for_each_nested(nl_rate, tb, rem_rate) { 1065 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 1066 nla_data(nl_rate), nla_len(nl_rate), 1067 rate_policy); 1068 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 1069 continue; 1070 mode->num_rates++; 1071 } 1072 1073 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 1074 if (!mode->rates) 1075 return NL_SKIP; 1076 1077 idx = 0; 1078 1079 nla_for_each_nested(nl_rate, tb, rem_rate) { 1080 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 1081 nla_data(nl_rate), nla_len(nl_rate), 1082 rate_policy); 1083 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 1084 continue; 1085 mode->rates[idx] = nla_get_u32( 1086 tb_rate[NL80211_BITRATE_ATTR_RATE]); 1087 idx++; 1088 } 1089 1090 return NL_OK; 1091} 1092 1093 1094static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 1095{ 1096 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 1097 struct hostapd_hw_modes *mode; 1098 int ret; 1099 1100 if (phy_info->last_mode != nl_band->nla_type) { 1101 mode = os_realloc_array(phy_info->modes, 1102 *phy_info->num_modes + 1, 1103 sizeof(*mode)); 1104 if (!mode) 1105 return NL_SKIP; 1106 phy_info->modes = mode; 1107 1108 mode = &phy_info->modes[*(phy_info->num_modes)]; 1109 os_memset(mode, 0, sizeof(*mode)); 1110 mode->mode = NUM_HOSTAPD_MODES; 1111 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN | 1112 HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN; 1113 1114 /* 1115 * Unsupported VHT MCS stream is defined as value 3, so the VHT 1116 * MCS RX/TX map must be initialized with 0xffff to mark all 8 1117 * possible streams as unsupported. This will be overridden if 1118 * driver advertises VHT support. 1119 */ 1120 mode->vht_mcs_set[0] = 0xff; 1121 mode->vht_mcs_set[1] = 0xff; 1122 mode->vht_mcs_set[4] = 0xff; 1123 mode->vht_mcs_set[5] = 0xff; 1124 1125 *(phy_info->num_modes) += 1; 1126 phy_info->last_mode = nl_band->nla_type; 1127 phy_info->last_chan_idx = 0; 1128 } else 1129 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 1130 1131 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 1132 nla_len(nl_band), NULL); 1133 1134 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 1135 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 1136 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 1137 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 1138 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 1139 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 1140 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 1141 if (ret != NL_OK) 1142 return ret; 1143 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 1144 if (ret != NL_OK) 1145 return ret; 1146 1147 return NL_OK; 1148} 1149 1150 1151static int phy_info_handler(struct nl_msg *msg, void *arg) 1152{ 1153 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1154 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1155 struct phy_info_arg *phy_info = arg; 1156 struct nlattr *nl_band; 1157 int rem_band; 1158 1159 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1160 genlmsg_attrlen(gnlh, 0), NULL); 1161 1162 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 1163 return NL_SKIP; 1164 1165 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 1166 { 1167 int res = phy_info_band(phy_info, nl_band); 1168 if (res != NL_OK) 1169 return res; 1170 } 1171 1172 return NL_SKIP; 1173} 1174 1175 1176static struct hostapd_hw_modes * 1177wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 1178 u16 *num_modes) 1179{ 1180 u16 m; 1181 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 1182 int i, mode11g_idx = -1; 1183 1184 /* heuristic to set up modes */ 1185 for (m = 0; m < *num_modes; m++) { 1186 if (!modes[m].num_channels) 1187 continue; 1188 if (modes[m].channels[0].freq < 4000) { 1189 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 1190 for (i = 0; i < modes[m].num_rates; i++) { 1191 if (modes[m].rates[i] > 200) { 1192 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 1193 break; 1194 } 1195 } 1196 } else if (modes[m].channels[0].freq > 50000) 1197 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 1198 else 1199 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 1200 } 1201 1202 /* If only 802.11g mode is included, use it to construct matching 1203 * 802.11b mode data. */ 1204 1205 for (m = 0; m < *num_modes; m++) { 1206 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 1207 return modes; /* 802.11b already included */ 1208 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1209 mode11g_idx = m; 1210 } 1211 1212 if (mode11g_idx < 0) 1213 return modes; /* 2.4 GHz band not supported at all */ 1214 1215 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 1216 if (nmodes == NULL) 1217 return modes; /* Could not add 802.11b mode */ 1218 1219 mode = &nmodes[*num_modes]; 1220 os_memset(mode, 0, sizeof(*mode)); 1221 (*num_modes)++; 1222 modes = nmodes; 1223 1224 mode->mode = HOSTAPD_MODE_IEEE80211B; 1225 1226 mode11g = &modes[mode11g_idx]; 1227 mode->num_channels = mode11g->num_channels; 1228 mode->channels = os_malloc(mode11g->num_channels * 1229 sizeof(struct hostapd_channel_data)); 1230 if (mode->channels == NULL) { 1231 (*num_modes)--; 1232 return modes; /* Could not add 802.11b mode */ 1233 } 1234 os_memcpy(mode->channels, mode11g->channels, 1235 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 1236 1237 mode->num_rates = 0; 1238 mode->rates = os_malloc(4 * sizeof(int)); 1239 if (mode->rates == NULL) { 1240 os_free(mode->channels); 1241 (*num_modes)--; 1242 return modes; /* Could not add 802.11b mode */ 1243 } 1244 1245 for (i = 0; i < mode11g->num_rates; i++) { 1246 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 1247 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 1248 continue; 1249 mode->rates[mode->num_rates] = mode11g->rates[i]; 1250 mode->num_rates++; 1251 if (mode->num_rates == 4) 1252 break; 1253 } 1254 1255 if (mode->num_rates == 0) { 1256 os_free(mode->channels); 1257 os_free(mode->rates); 1258 (*num_modes)--; 1259 return modes; /* No 802.11b rates */ 1260 } 1261 1262 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 1263 "information"); 1264 1265 return modes; 1266} 1267 1268 1269static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 1270 int end) 1271{ 1272 int c; 1273 1274 for (c = 0; c < mode->num_channels; c++) { 1275 struct hostapd_channel_data *chan = &mode->channels[c]; 1276 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 1277 chan->flag |= HOSTAPD_CHAN_HT40; 1278 } 1279} 1280 1281 1282static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 1283 int end) 1284{ 1285 int c; 1286 1287 for (c = 0; c < mode->num_channels; c++) { 1288 struct hostapd_channel_data *chan = &mode->channels[c]; 1289 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 1290 continue; 1291 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 1292 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 1293 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 1294 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 1295 } 1296} 1297 1298 1299static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp, 1300 struct phy_info_arg *results) 1301{ 1302 u16 m; 1303 1304 for (m = 0; m < *results->num_modes; m++) { 1305 int c; 1306 struct hostapd_hw_modes *mode = &results->modes[m]; 1307 1308 for (c = 0; c < mode->num_channels; c++) { 1309 struct hostapd_channel_data *chan = &mode->channels[c]; 1310 if ((u32) chan->freq - 10 >= start && 1311 (u32) chan->freq + 10 <= end) 1312 chan->max_tx_power = max_eirp; 1313 } 1314 } 1315} 1316 1317 1318static void nl80211_reg_rule_ht40(u32 start, u32 end, 1319 struct phy_info_arg *results) 1320{ 1321 u16 m; 1322 1323 for (m = 0; m < *results->num_modes; m++) { 1324 if (!(results->modes[m].ht_capab & 1325 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1326 continue; 1327 nl80211_set_ht40_mode(&results->modes[m], start, end); 1328 } 1329} 1330 1331 1332static void nl80211_reg_rule_sec(struct nlattr *tb[], 1333 struct phy_info_arg *results) 1334{ 1335 u32 start, end, max_bw; 1336 u16 m; 1337 1338 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1339 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 1340 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 1341 return; 1342 1343 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1344 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1345 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1346 1347 if (max_bw < 20) 1348 return; 1349 1350 for (m = 0; m < *results->num_modes; m++) { 1351 if (!(results->modes[m].ht_capab & 1352 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1353 continue; 1354 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 1355 } 1356} 1357 1358 1359static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start, 1360 int end) 1361{ 1362 int c; 1363 1364 for (c = 0; c < mode->num_channels; c++) { 1365 struct hostapd_channel_data *chan = &mode->channels[c]; 1366 if (chan->freq - 10 >= start && chan->freq + 70 <= end) 1367 chan->flag |= HOSTAPD_CHAN_VHT_10_70; 1368 1369 if (chan->freq - 30 >= start && chan->freq + 50 <= end) 1370 chan->flag |= HOSTAPD_CHAN_VHT_30_50; 1371 1372 if (chan->freq - 50 >= start && chan->freq + 30 <= end) 1373 chan->flag |= HOSTAPD_CHAN_VHT_50_30; 1374 1375 if (chan->freq - 70 >= start && chan->freq + 10 <= end) 1376 chan->flag |= HOSTAPD_CHAN_VHT_70_10; 1377 } 1378} 1379 1380 1381static void nl80211_reg_rule_vht(struct nlattr *tb[], 1382 struct phy_info_arg *results) 1383{ 1384 u32 start, end, max_bw; 1385 u16 m; 1386 1387 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1388 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 1389 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 1390 return; 1391 1392 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1393 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1394 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1395 1396 if (max_bw < 80) 1397 return; 1398 1399 for (m = 0; m < *results->num_modes; m++) { 1400 if (!(results->modes[m].ht_capab & 1401 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1402 continue; 1403 /* TODO: use a real VHT support indication */ 1404 if (!results->modes[m].vht_capab) 1405 continue; 1406 1407 nl80211_set_vht_mode(&results->modes[m], start, end); 1408 } 1409} 1410 1411 1412static const char * dfs_domain_name(enum nl80211_dfs_regions region) 1413{ 1414 switch (region) { 1415 case NL80211_DFS_UNSET: 1416 return "DFS-UNSET"; 1417 case NL80211_DFS_FCC: 1418 return "DFS-FCC"; 1419 case NL80211_DFS_ETSI: 1420 return "DFS-ETSI"; 1421 case NL80211_DFS_JP: 1422 return "DFS-JP"; 1423 default: 1424 return "DFS-invalid"; 1425 } 1426} 1427 1428 1429static int nl80211_get_reg(struct nl_msg *msg, void *arg) 1430{ 1431 struct phy_info_arg *results = arg; 1432 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1433 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1434 struct nlattr *nl_rule; 1435 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 1436 int rem_rule; 1437 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 1438 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 1439 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 1440 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 1441 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 1442 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 1443 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 1444 }; 1445 1446 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1447 genlmsg_attrlen(gnlh, 0), NULL); 1448 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 1449 !tb_msg[NL80211_ATTR_REG_RULES]) { 1450 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 1451 "available"); 1452 return NL_SKIP; 1453 } 1454 1455 if (tb_msg[NL80211_ATTR_DFS_REGION]) { 1456 enum nl80211_dfs_regions dfs_domain; 1457 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]); 1458 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)", 1459 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 1460 dfs_domain_name(dfs_domain)); 1461 } else { 1462 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 1463 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 1464 } 1465 1466 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1467 { 1468 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0; 1469 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1470 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1471 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1472 tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL) 1473 continue; 1474 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1475 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1476 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 1477 max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100; 1478 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 1479 max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1480 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS]) 1481 flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]); 1482 1483 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s", 1484 start, end, max_bw, max_eirp, 1485 flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "", 1486 flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "", 1487 flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "", 1488 flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" : 1489 "", 1490 flags & NL80211_RRF_DFS ? " (DFS)" : "", 1491 flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "", 1492 flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "", 1493 flags & NL80211_RRF_NO_IR ? " (no IR)" : ""); 1494 if (max_bw >= 40) 1495 nl80211_reg_rule_ht40(start, end, results); 1496 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 1497 nl80211_reg_rule_max_eirp(start, end, max_eirp, 1498 results); 1499 } 1500 1501 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1502 { 1503 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1504 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1505 nl80211_reg_rule_sec(tb_rule, results); 1506 } 1507 1508 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1509 { 1510 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1511 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1512 nl80211_reg_rule_vht(tb_rule, results); 1513 } 1514 1515 return NL_SKIP; 1516} 1517 1518 1519static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv, 1520 struct phy_info_arg *results) 1521{ 1522 struct nl_msg *msg; 1523 1524 msg = nlmsg_alloc(); 1525 if (!msg) 1526 return -ENOMEM; 1527 1528 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 1529 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 1530} 1531 1532 1533struct hostapd_hw_modes * 1534nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 1535{ 1536 u32 feat; 1537 struct i802_bss *bss = priv; 1538 struct wpa_driver_nl80211_data *drv = bss->drv; 1539 int nl_flags = 0; 1540 struct nl_msg *msg; 1541 struct phy_info_arg result = { 1542 .num_modes = num_modes, 1543 .modes = NULL, 1544 .last_mode = -1, 1545 }; 1546 1547 *num_modes = 0; 1548 *flags = 0; 1549 1550 feat = get_nl80211_protocol_features(drv); 1551 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 1552 nl_flags = NLM_F_DUMP; 1553 if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) || 1554 nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { 1555 nlmsg_free(msg); 1556 return NULL; 1557 } 1558 1559 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 1560 nl80211_set_regulatory_flags(drv, &result); 1561 return wpa_driver_nl80211_postprocess_modes(result.modes, 1562 num_modes); 1563 } 1564 1565 return NULL; 1566} 1567