1 /* 2 * hostapd / IEEE 802.11 Management: Beacon and Probe Request/Response 3 * Copyright (c) 2002-2004, Instant802 Networks, Inc. 4 * Copyright (c) 2005-2006, Devicescape Software, Inc. 5 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi> 6 * 7 * This software may be distributed under the terms of the BSD license. 8 * See README for more details. 9 */ 10 11 #include "utils/includes.h" 12 13 #ifndef CONFIG_NATIVE_WINDOWS 14 15 #include "utils/common.h" 16 #include "common/ieee802_11_defs.h" 17 #include "common/ieee802_11_common.h" 18 #include "common/hw_features_common.h" 19 #include "common/wpa_ctrl.h" 20 #include "wps/wps_defs.h" 21 #include "p2p/p2p.h" 22 #include "hostapd.h" 23 #include "ieee802_11.h" 24 #include "wpa_auth.h" 25 #include "wmm.h" 26 #include "ap_config.h" 27 #include "sta_info.h" 28 #include "p2p_hostapd.h" 29 #include "ap_drv_ops.h" 30 #include "beacon.h" 31 #include "hs20.h" 32 #include "dfs.h" 33 #include "taxonomy.h" 34 #include "ieee802_11_auth.h" 35 36 37 #ifdef NEED_AP_MLME 38 39 static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid, 40 size_t len) 41 { 42 size_t i; 43 44 for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) { 45 if (hapd->conf->radio_measurements[i]) 46 break; 47 } 48 49 if (i == RRM_CAPABILITIES_IE_LEN || len < 2 + RRM_CAPABILITIES_IE_LEN) 50 return eid; 51 52 *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES; 53 *eid++ = RRM_CAPABILITIES_IE_LEN; 54 os_memcpy(eid, hapd->conf->radio_measurements, RRM_CAPABILITIES_IE_LEN); 55 56 return eid + RRM_CAPABILITIES_IE_LEN; 57 } 58 59 60 static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len) 61 { 62 if (len < 2 + 5) 63 return eid; 64 65 #ifdef CONFIG_TESTING_OPTIONS 66 if (hapd->conf->bss_load_test_set) { 67 *eid++ = WLAN_EID_BSS_LOAD; 68 *eid++ = 5; 69 os_memcpy(eid, hapd->conf->bss_load_test, 5); 70 eid += 5; 71 return eid; 72 } 73 #endif /* CONFIG_TESTING_OPTIONS */ 74 if (hapd->conf->bss_load_update_period) { 75 *eid++ = WLAN_EID_BSS_LOAD; 76 *eid++ = 5; 77 WPA_PUT_LE16(eid, hapd->num_sta); 78 eid += 2; 79 *eid++ = hapd->iface->channel_utilization; 80 WPA_PUT_LE16(eid, 0); /* no available admission capabity */ 81 eid += 2; 82 } 83 return eid; 84 } 85 86 87 static u8 ieee802_11_erp_info(struct hostapd_data *hapd) 88 { 89 u8 erp = 0; 90 91 if (hapd->iface->current_mode == NULL || 92 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 93 return 0; 94 95 if (hapd->iface->olbc) 96 erp |= ERP_INFO_USE_PROTECTION; 97 if (hapd->iface->num_sta_non_erp > 0) { 98 erp |= ERP_INFO_NON_ERP_PRESENT | 99 ERP_INFO_USE_PROTECTION; 100 } 101 if (hapd->iface->num_sta_no_short_preamble > 0 || 102 hapd->iconf->preamble == LONG_PREAMBLE) 103 erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 104 105 return erp; 106 } 107 108 109 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 110 { 111 *eid++ = WLAN_EID_DS_PARAMS; 112 *eid++ = 1; 113 *eid++ = hapd->iconf->channel; 114 return eid; 115 } 116 117 118 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 119 { 120 if (hapd->iface->current_mode == NULL || 121 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 122 return eid; 123 124 /* Set NonERP_present and use_protection bits if there 125 * are any associated NonERP stations. */ 126 /* TODO: use_protection bit can be set to zero even if 127 * there are NonERP stations present. This optimization 128 * might be useful if NonERP stations are "quiet". 129 * See 802.11g/D6 E-1 for recommended practice. 130 * In addition, Non ERP present might be set, if AP detects Non ERP 131 * operation on other APs. */ 132 133 /* Add ERP Information element */ 134 *eid++ = WLAN_EID_ERP_INFO; 135 *eid++ = 1; 136 *eid++ = ieee802_11_erp_info(hapd); 137 138 return eid; 139 } 140 141 142 static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid) 143 { 144 u8 *pos = eid; 145 u8 local_pwr_constraint = 0; 146 int dfs; 147 148 if (hapd->iface->current_mode == NULL || 149 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A) 150 return eid; 151 152 /* Let host drivers add this IE if DFS support is offloaded */ 153 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) 154 return eid; 155 156 /* 157 * There is no DFS support and power constraint was not directly 158 * requested by config option. 159 */ 160 if (!hapd->iconf->ieee80211h && 161 hapd->iconf->local_pwr_constraint == -1) 162 return eid; 163 164 /* Check if DFS is required by regulatory. */ 165 dfs = hostapd_is_dfs_required(hapd->iface); 166 if (dfs < 0) { 167 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d", 168 dfs); 169 dfs = 0; 170 } 171 172 if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1) 173 return eid; 174 175 /* 176 * ieee80211h (DFS) is enabled so Power Constraint element shall 177 * be added when running on DFS channel whenever local_pwr_constraint 178 * is configured or not. In order to meet regulations when TPC is not 179 * implemented using a transmit power that is below the legal maximum 180 * (including any mitigation factor) should help. In this case, 181 * indicate 3 dB below maximum allowed transmit power. 182 */ 183 if (hapd->iconf->local_pwr_constraint == -1) 184 local_pwr_constraint = 3; 185 186 /* 187 * A STA that is not an AP shall use a transmit power less than or 188 * equal to the local maximum transmit power level for the channel. 189 * The local maximum transmit power can be calculated from the formula: 190 * local max TX pwr = max TX pwr - local pwr constraint 191 * Where max TX pwr is maximum transmit power level specified for 192 * channel in Country element and local pwr constraint is specified 193 * for channel in this Power Constraint element. 194 */ 195 196 /* Element ID */ 197 *pos++ = WLAN_EID_PWR_CONSTRAINT; 198 /* Length */ 199 *pos++ = 1; 200 /* Local Power Constraint */ 201 if (local_pwr_constraint) 202 *pos++ = local_pwr_constraint; 203 else 204 *pos++ = hapd->iconf->local_pwr_constraint; 205 206 return pos; 207 } 208 209 210 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 211 struct hostapd_channel_data *start, 212 struct hostapd_channel_data *prev) 213 { 214 if (end - pos < 3) 215 return pos; 216 217 /* first channel number */ 218 *pos++ = start->chan; 219 /* number of channels */ 220 *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 221 /* maximum transmit power level */ 222 *pos++ = start->max_tx_power; 223 224 return pos; 225 } 226 227 228 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 229 int max_len) 230 { 231 u8 *pos = eid; 232 u8 *end = eid + max_len; 233 int i; 234 struct hostapd_hw_modes *mode; 235 struct hostapd_channel_data *start, *prev; 236 int chan_spacing = 1; 237 238 if (!hapd->iconf->ieee80211d || max_len < 6 || 239 hapd->iface->current_mode == NULL) 240 return eid; 241 242 *pos++ = WLAN_EID_COUNTRY; 243 pos++; /* length will be set later */ 244 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 245 pos += 3; 246 247 mode = hapd->iface->current_mode; 248 if (mode->mode == HOSTAPD_MODE_IEEE80211A) 249 chan_spacing = 4; 250 251 start = prev = NULL; 252 for (i = 0; i < mode->num_channels; i++) { 253 struct hostapd_channel_data *chan = &mode->channels[i]; 254 if (chan->flag & HOSTAPD_CHAN_DISABLED) 255 continue; 256 if (start && prev && 257 prev->chan + chan_spacing == chan->chan && 258 start->max_tx_power == chan->max_tx_power) { 259 prev = chan; 260 continue; /* can use same entry */ 261 } 262 263 if (start && prev) { 264 pos = hostapd_eid_country_add(pos, end, chan_spacing, 265 start, prev); 266 start = NULL; 267 } 268 269 /* Start new group */ 270 start = prev = chan; 271 } 272 273 if (start) { 274 pos = hostapd_eid_country_add(pos, end, chan_spacing, 275 start, prev); 276 } 277 278 if ((pos - eid) & 1) { 279 if (end - pos < 1) 280 return eid; 281 *pos++ = 0; /* pad for 16-bit alignment */ 282 } 283 284 eid[1] = (pos - eid) - 2; 285 286 return pos; 287 } 288 289 290 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len) 291 { 292 const u8 *ie; 293 size_t ielen; 294 295 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 296 if (ie == NULL || ielen > len) 297 return eid; 298 299 os_memcpy(eid, ie, ielen); 300 return eid + ielen; 301 } 302 303 304 static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid) 305 { 306 #ifdef CONFIG_TESTING_OPTIONS 307 if (hapd->iface->cs_oper_class && hapd->iconf->ecsa_ie_only) 308 return eid; 309 #endif /* CONFIG_TESTING_OPTIONS */ 310 311 if (!hapd->cs_freq_params.channel) 312 return eid; 313 314 *eid++ = WLAN_EID_CHANNEL_SWITCH; 315 *eid++ = 3; 316 *eid++ = hapd->cs_block_tx; 317 *eid++ = hapd->cs_freq_params.channel; 318 *eid++ = hapd->cs_count; 319 320 return eid; 321 } 322 323 324 static u8 * hostapd_eid_ecsa(struct hostapd_data *hapd, u8 *eid) 325 { 326 if (!hapd->cs_freq_params.channel || !hapd->iface->cs_oper_class) 327 return eid; 328 329 *eid++ = WLAN_EID_EXT_CHANSWITCH_ANN; 330 *eid++ = 4; 331 *eid++ = hapd->cs_block_tx; 332 *eid++ = hapd->iface->cs_oper_class; 333 *eid++ = hapd->cs_freq_params.channel; 334 *eid++ = hapd->cs_count; 335 336 return eid; 337 } 338 339 340 static u8 * hostapd_eid_supported_op_classes(struct hostapd_data *hapd, u8 *eid) 341 { 342 u8 op_class, channel; 343 344 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) || 345 !hapd->iface->freq) 346 return eid; 347 348 if (ieee80211_freq_to_channel_ext(hapd->iface->freq, 349 hapd->iconf->secondary_channel, 350 hostapd_get_oper_chwidth(hapd->iconf), 351 &op_class, &channel) == 352 NUM_HOSTAPD_MODES) 353 return eid; 354 355 *eid++ = WLAN_EID_SUPPORTED_OPERATING_CLASSES; 356 *eid++ = 2; 357 358 /* Current Operating Class */ 359 *eid++ = op_class; 360 361 /* TODO: Advertise all the supported operating classes */ 362 *eid++ = 0; 363 364 return eid; 365 } 366 367 368 static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd, 369 const struct ieee80211_mgmt *req, 370 int is_p2p, size_t *resp_len) 371 { 372 struct ieee80211_mgmt *resp; 373 u8 *pos, *epos, *csa_pos; 374 size_t buflen; 375 376 #define MAX_PROBERESP_LEN 768 377 buflen = MAX_PROBERESP_LEN; 378 #ifdef CONFIG_WPS 379 if (hapd->wps_probe_resp_ie) 380 buflen += wpabuf_len(hapd->wps_probe_resp_ie); 381 #endif /* CONFIG_WPS */ 382 #ifdef CONFIG_P2P 383 if (hapd->p2p_probe_resp_ie) 384 buflen += wpabuf_len(hapd->p2p_probe_resp_ie); 385 #endif /* CONFIG_P2P */ 386 #ifdef CONFIG_FST 387 if (hapd->iface->fst_ies) 388 buflen += wpabuf_len(hapd->iface->fst_ies); 389 #endif /* CONFIG_FST */ 390 if (hapd->conf->vendor_elements) 391 buflen += wpabuf_len(hapd->conf->vendor_elements); 392 if (hapd->conf->vendor_vht) { 393 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 394 2 + sizeof(struct ieee80211_vht_operation); 395 } 396 397 #ifdef CONFIG_IEEE80211AX 398 if (hapd->iconf->ieee80211ax) { 399 buflen += 3 + sizeof(struct ieee80211_he_capabilities) + 400 3 + sizeof(struct ieee80211_he_operation) + 401 3 + sizeof(struct ieee80211_he_mu_edca_parameter_set) + 402 3 + sizeof(struct ieee80211_spatial_reuse); 403 } 404 #endif /* CONFIG_IEEE80211AX */ 405 406 buflen += hostapd_mbo_ie_len(hapd); 407 buflen += hostapd_eid_owe_trans_len(hapd); 408 409 resp = os_zalloc(buflen); 410 if (resp == NULL) 411 return NULL; 412 413 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 414 415 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 416 WLAN_FC_STYPE_PROBE_RESP); 417 if (req) 418 os_memcpy(resp->da, req->sa, ETH_ALEN); 419 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 420 421 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 422 resp->u.probe_resp.beacon_int = 423 host_to_le16(hapd->iconf->beacon_int); 424 425 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 426 resp->u.probe_resp.capab_info = 427 host_to_le16(hostapd_own_capab_info(hapd)); 428 429 pos = resp->u.probe_resp.variable; 430 *pos++ = WLAN_EID_SSID; 431 *pos++ = hapd->conf->ssid.ssid_len; 432 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 433 pos += hapd->conf->ssid.ssid_len; 434 435 /* Supported rates */ 436 pos = hostapd_eid_supp_rates(hapd, pos); 437 438 /* DS Params */ 439 pos = hostapd_eid_ds_params(hapd, pos); 440 441 pos = hostapd_eid_country(hapd, pos, epos - pos); 442 443 /* Power Constraint element */ 444 pos = hostapd_eid_pwr_constraint(hapd, pos); 445 446 /* CSA IE */ 447 csa_pos = hostapd_eid_csa(hapd, pos); 448 if (csa_pos != pos) 449 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1; 450 pos = csa_pos; 451 452 /* ERP Information element */ 453 pos = hostapd_eid_erp_info(hapd, pos); 454 455 /* Extended supported rates */ 456 pos = hostapd_eid_ext_supp_rates(hapd, pos); 457 458 /* RSN, MDIE */ 459 if (hapd->conf->wpa != WPA_PROTO_WPA) 460 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 461 462 pos = hostapd_eid_bss_load(hapd, pos, epos - pos); 463 464 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos); 465 466 /* eCSA IE */ 467 csa_pos = hostapd_eid_ecsa(hapd, pos); 468 if (csa_pos != pos) 469 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1; 470 pos = csa_pos; 471 472 pos = hostapd_eid_supported_op_classes(hapd, pos); 473 474 #ifdef CONFIG_IEEE80211N 475 /* Secondary Channel Offset element */ 476 /* TODO: The standard doesn't specify a position for this element. */ 477 pos = hostapd_eid_secondary_channel(hapd, pos); 478 479 pos = hostapd_eid_ht_capabilities(hapd, pos); 480 pos = hostapd_eid_ht_operation(hapd, pos); 481 #endif /* CONFIG_IEEE80211N */ 482 483 pos = hostapd_eid_ext_capab(hapd, pos); 484 485 pos = hostapd_eid_time_adv(hapd, pos); 486 pos = hostapd_eid_time_zone(hapd, pos); 487 488 pos = hostapd_eid_interworking(hapd, pos); 489 pos = hostapd_eid_adv_proto(hapd, pos); 490 pos = hostapd_eid_roaming_consortium(hapd, pos); 491 492 #ifdef CONFIG_FST 493 if (hapd->iface->fst_ies) { 494 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies), 495 wpabuf_len(hapd->iface->fst_ies)); 496 pos += wpabuf_len(hapd->iface->fst_ies); 497 } 498 #endif /* CONFIG_FST */ 499 500 #ifdef CONFIG_IEEE80211AC 501 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 502 pos = hostapd_eid_vht_capabilities(hapd, pos, 0); 503 pos = hostapd_eid_vht_operation(hapd, pos); 504 pos = hostapd_eid_txpower_envelope(hapd, pos); 505 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos); 506 } 507 #endif /* CONFIG_IEEE80211AC */ 508 509 pos = hostapd_eid_fils_indic(hapd, pos, 0); 510 511 #ifdef CONFIG_IEEE80211AX 512 if (hapd->iconf->ieee80211ax) { 513 pos = hostapd_eid_he_capab(hapd, pos, IEEE80211_MODE_AP); 514 pos = hostapd_eid_he_operation(hapd, pos); 515 pos = hostapd_eid_he_mu_edca_parameter_set(hapd, pos); 516 pos = hostapd_eid_spatial_reuse(hapd, pos); 517 } 518 #endif /* CONFIG_IEEE80211AX */ 519 520 #ifdef CONFIG_IEEE80211AC 521 if (hapd->conf->vendor_vht) 522 pos = hostapd_eid_vendor_vht(hapd, pos); 523 #endif /* CONFIG_IEEE80211AC */ 524 525 /* WPA */ 526 if (hapd->conf->wpa == WPA_PROTO_WPA) 527 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 528 529 /* Wi-Fi Alliance WMM */ 530 pos = hostapd_eid_wmm(hapd, pos); 531 532 #ifdef CONFIG_WPS 533 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 534 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 535 wpabuf_len(hapd->wps_probe_resp_ie)); 536 pos += wpabuf_len(hapd->wps_probe_resp_ie); 537 } 538 #endif /* CONFIG_WPS */ 539 540 #ifdef CONFIG_P2P 541 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 542 hapd->p2p_probe_resp_ie) { 543 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 544 wpabuf_len(hapd->p2p_probe_resp_ie)); 545 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 546 } 547 #endif /* CONFIG_P2P */ 548 #ifdef CONFIG_P2P_MANAGER 549 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 550 P2P_MANAGE) 551 pos = hostapd_eid_p2p_manage(hapd, pos); 552 #endif /* CONFIG_P2P_MANAGER */ 553 554 #ifdef CONFIG_HS20 555 pos = hostapd_eid_hs20_indication(hapd, pos); 556 pos = hostapd_eid_osen(hapd, pos); 557 #endif /* CONFIG_HS20 */ 558 559 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos); 560 pos = hostapd_eid_owe_trans(hapd, pos, (u8 *) resp + buflen - pos); 561 562 if (hapd->conf->vendor_elements) { 563 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 564 wpabuf_len(hapd->conf->vendor_elements)); 565 pos += wpabuf_len(hapd->conf->vendor_elements); 566 } 567 568 *resp_len = pos - (u8 *) resp; 569 return (u8 *) resp; 570 } 571 572 573 enum ssid_match_result { 574 NO_SSID_MATCH, 575 EXACT_SSID_MATCH, 576 WILDCARD_SSID_MATCH 577 }; 578 579 static enum ssid_match_result ssid_match(struct hostapd_data *hapd, 580 const u8 *ssid, size_t ssid_len, 581 const u8 *ssid_list, 582 size_t ssid_list_len) 583 { 584 const u8 *pos, *end; 585 int wildcard = 0; 586 587 if (ssid_len == 0) 588 wildcard = 1; 589 if (ssid_len == hapd->conf->ssid.ssid_len && 590 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0) 591 return EXACT_SSID_MATCH; 592 593 if (ssid_list == NULL) 594 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 595 596 pos = ssid_list; 597 end = ssid_list + ssid_list_len; 598 while (end - pos >= 2) { 599 if (2 + pos[1] > end - pos) 600 break; 601 if (pos[1] == 0) 602 wildcard = 1; 603 if (pos[1] == hapd->conf->ssid.ssid_len && 604 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0) 605 return EXACT_SSID_MATCH; 606 pos += 2 + pos[1]; 607 } 608 609 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 610 } 611 612 613 void sta_track_expire(struct hostapd_iface *iface, int force) 614 { 615 struct os_reltime now; 616 struct hostapd_sta_info *info; 617 618 if (!iface->num_sta_seen) 619 return; 620 621 os_get_reltime(&now); 622 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info, 623 list))) { 624 if (!force && 625 !os_reltime_expired(&now, &info->last_seen, 626 iface->conf->track_sta_max_age)) 627 break; 628 force = 0; 629 630 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for " 631 MACSTR, iface->bss[0]->conf->iface, 632 MAC2STR(info->addr)); 633 dl_list_del(&info->list); 634 iface->num_sta_seen--; 635 sta_track_del(info); 636 } 637 } 638 639 640 static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface, 641 const u8 *addr) 642 { 643 struct hostapd_sta_info *info; 644 645 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list) 646 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0) 647 return info; 648 649 return NULL; 650 } 651 652 653 void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal) 654 { 655 struct hostapd_sta_info *info; 656 657 info = sta_track_get(iface, addr); 658 if (info) { 659 /* Move the most recent entry to the end of the list */ 660 dl_list_del(&info->list); 661 dl_list_add_tail(&iface->sta_seen, &info->list); 662 os_get_reltime(&info->last_seen); 663 info->ssi_signal = ssi_signal; 664 return; 665 } 666 667 /* Add a new entry */ 668 info = os_zalloc(sizeof(*info)); 669 if (info == NULL) 670 return; 671 os_memcpy(info->addr, addr, ETH_ALEN); 672 os_get_reltime(&info->last_seen); 673 info->ssi_signal = ssi_signal; 674 675 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) { 676 /* Expire oldest entry to make room for a new one */ 677 sta_track_expire(iface, 1); 678 } 679 680 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for " 681 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr)); 682 dl_list_add_tail(&iface->sta_seen, &info->list); 683 iface->num_sta_seen++; 684 } 685 686 687 struct hostapd_data * 688 sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr, 689 const char *ifname) 690 { 691 struct hapd_interfaces *interfaces = iface->interfaces; 692 size_t i, j; 693 694 for (i = 0; i < interfaces->count; i++) { 695 struct hostapd_data *hapd = NULL; 696 697 iface = interfaces->iface[i]; 698 for (j = 0; j < iface->num_bss; j++) { 699 hapd = iface->bss[j]; 700 if (os_strcmp(ifname, hapd->conf->iface) == 0) 701 break; 702 hapd = NULL; 703 } 704 705 if (hapd && sta_track_get(iface, addr)) 706 return hapd; 707 } 708 709 return NULL; 710 } 711 712 713 #ifdef CONFIG_TAXONOMY 714 void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr, 715 struct wpabuf **probe_ie_taxonomy) 716 { 717 struct hostapd_sta_info *info; 718 719 info = sta_track_get(iface, addr); 720 if (!info) 721 return; 722 723 wpabuf_free(*probe_ie_taxonomy); 724 *probe_ie_taxonomy = info->probe_ie_taxonomy; 725 info->probe_ie_taxonomy = NULL; 726 } 727 #endif /* CONFIG_TAXONOMY */ 728 729 730 void handle_probe_req(struct hostapd_data *hapd, 731 const struct ieee80211_mgmt *mgmt, size_t len, 732 int ssi_signal) 733 { 734 u8 *resp; 735 struct ieee802_11_elems elems; 736 const u8 *ie; 737 size_t ie_len; 738 size_t i, resp_len; 739 int noack; 740 enum ssid_match_result res; 741 int ret; 742 u16 csa_offs[2]; 743 size_t csa_offs_len; 744 u32 session_timeout, acct_interim_interval; 745 struct vlan_description vlan_id; 746 struct hostapd_sta_wpa_psk_short *psk = NULL; 747 char *identity = NULL; 748 char *radius_cui = NULL; 749 750 if (len < IEEE80211_HDRLEN) 751 return; 752 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN; 753 if (hapd->iconf->track_sta_max_num) 754 sta_track_add(hapd->iface, mgmt->sa, ssi_signal); 755 ie_len = len - IEEE80211_HDRLEN; 756 757 ret = ieee802_11_allowed_address(hapd, mgmt->sa, (const u8 *) mgmt, len, 758 &session_timeout, 759 &acct_interim_interval, &vlan_id, 760 &psk, &identity, &radius_cui, 1); 761 if (ret == HOSTAPD_ACL_REJECT) { 762 wpa_msg(hapd->msg_ctx, MSG_DEBUG, 763 "Ignore Probe Request frame from " MACSTR 764 " due to ACL reject ", MAC2STR(mgmt->sa)); 765 return; 766 } 767 768 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 769 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 770 mgmt->sa, mgmt->da, mgmt->bssid, 771 ie, ie_len, ssi_signal) > 0) 772 return; 773 774 if (!hapd->conf->send_probe_response) 775 return; 776 777 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 778 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 779 MAC2STR(mgmt->sa)); 780 return; 781 } 782 783 if ((!elems.ssid || !elems.supp_rates)) { 784 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 785 "without SSID or supported rates element", 786 MAC2STR(mgmt->sa)); 787 return; 788 } 789 790 /* 791 * No need to reply if the Probe Request frame was sent on an adjacent 792 * channel. IEEE Std 802.11-2012 describes this as a requirement for an 793 * AP with dot11RadioMeasurementActivated set to true, but strictly 794 * speaking does not allow such ignoring of Probe Request frames if 795 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce 796 * number of unnecessary Probe Response frames for cases where the STA 797 * is less likely to see them (Probe Request frame sent on a 798 * neighboring, but partially overlapping, channel). 799 */ 800 if (elems.ds_params && 801 hapd->iface->current_mode && 802 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G || 803 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) && 804 hapd->iconf->channel != elems.ds_params[0]) { 805 wpa_printf(MSG_DEBUG, 806 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u", 807 hapd->iconf->channel, elems.ds_params[0]); 808 return; 809 } 810 811 #ifdef CONFIG_P2P 812 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) { 813 struct wpabuf *wps; 814 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 815 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 816 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 817 "due to mismatch with Requested Device " 818 "Type"); 819 wpabuf_free(wps); 820 return; 821 } 822 wpabuf_free(wps); 823 } 824 825 if (hapd->p2p && hapd->p2p_group && elems.p2p) { 826 struct wpabuf *p2p; 827 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 828 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 829 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 830 "due to mismatch with Device ID"); 831 wpabuf_free(p2p); 832 return; 833 } 834 wpabuf_free(p2p); 835 } 836 #endif /* CONFIG_P2P */ 837 838 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 && 839 elems.ssid_list_len == 0) { 840 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 841 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 842 return; 843 } 844 845 #ifdef CONFIG_P2P 846 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 847 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 848 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 849 P2P_WILDCARD_SSID_LEN) == 0) { 850 /* Process P2P Wildcard SSID like Wildcard SSID */ 851 elems.ssid_len = 0; 852 } 853 #endif /* CONFIG_P2P */ 854 855 #ifdef CONFIG_TAXONOMY 856 { 857 struct sta_info *sta; 858 struct hostapd_sta_info *info; 859 860 if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) { 861 taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len); 862 } else if ((info = sta_track_get(hapd->iface, 863 mgmt->sa)) != NULL) { 864 taxonomy_hostapd_sta_info_probe_req(hapd, info, 865 ie, ie_len); 866 } 867 } 868 #endif /* CONFIG_TAXONOMY */ 869 870 res = ssid_match(hapd, elems.ssid, elems.ssid_len, 871 elems.ssid_list, elems.ssid_list_len); 872 if (res == NO_SSID_MATCH) { 873 if (!(mgmt->da[0] & 0x01)) { 874 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 875 " for foreign SSID '%s' (DA " MACSTR ")%s", 876 MAC2STR(mgmt->sa), 877 wpa_ssid_txt(elems.ssid, elems.ssid_len), 878 MAC2STR(mgmt->da), 879 elems.ssid_list ? " (SSID list)" : ""); 880 } 881 return; 882 } 883 884 #ifdef CONFIG_INTERWORKING 885 if (hapd->conf->interworking && 886 elems.interworking && elems.interworking_len >= 1) { 887 u8 ant = elems.interworking[0] & 0x0f; 888 if (ant != INTERWORKING_ANT_WILDCARD && 889 ant != hapd->conf->access_network_type) { 890 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 891 " for mismatching ANT %u ignored", 892 MAC2STR(mgmt->sa), ant); 893 return; 894 } 895 } 896 897 if (hapd->conf->interworking && elems.interworking && 898 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 899 const u8 *hessid; 900 if (elems.interworking_len == 7) 901 hessid = elems.interworking + 1; 902 else 903 hessid = elems.interworking + 1 + 2; 904 if (!is_broadcast_ether_addr(hessid) && 905 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 906 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 907 " for mismatching HESSID " MACSTR 908 " ignored", 909 MAC2STR(mgmt->sa), MAC2STR(hessid)); 910 return; 911 } 912 } 913 #endif /* CONFIG_INTERWORKING */ 914 915 #ifdef CONFIG_P2P 916 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 917 supp_rates_11b_only(&elems)) { 918 /* Indicates support for 11b rates only */ 919 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from " 920 MACSTR " with only 802.11b rates", 921 MAC2STR(mgmt->sa)); 922 return; 923 } 924 #endif /* CONFIG_P2P */ 925 926 /* TODO: verify that supp_rates contains at least one matching rate 927 * with AP configuration */ 928 929 if (hapd->conf->no_probe_resp_if_seen_on && 930 is_multicast_ether_addr(mgmt->da) && 931 is_multicast_ether_addr(mgmt->bssid) && 932 sta_track_seen_on(hapd->iface, mgmt->sa, 933 hapd->conf->no_probe_resp_if_seen_on)) { 934 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 935 " since STA has been seen on %s", 936 hapd->conf->iface, MAC2STR(mgmt->sa), 937 hapd->conf->no_probe_resp_if_seen_on); 938 return; 939 } 940 941 if (hapd->conf->no_probe_resp_if_max_sta && 942 is_multicast_ether_addr(mgmt->da) && 943 is_multicast_ether_addr(mgmt->bssid) && 944 hapd->num_sta >= hapd->conf->max_num_sta && 945 !ap_get_sta(hapd, mgmt->sa)) { 946 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 947 " since no room for additional STA", 948 hapd->conf->iface, MAC2STR(mgmt->sa)); 949 return; 950 } 951 952 #ifdef CONFIG_TESTING_OPTIONS 953 if (hapd->iconf->ignore_probe_probability > 0.0 && 954 drand48() < hapd->iconf->ignore_probe_probability) { 955 wpa_printf(MSG_INFO, 956 "TESTING: ignoring probe request from " MACSTR, 957 MAC2STR(mgmt->sa)); 958 return; 959 } 960 #endif /* CONFIG_TESTING_OPTIONS */ 961 962 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, RX_PROBE_REQUEST "sa=" MACSTR 963 " signal=%d", MAC2STR(mgmt->sa), ssi_signal); 964 965 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL, 966 &resp_len); 967 if (resp == NULL) 968 return; 969 970 /* 971 * If this is a broadcast probe request, apply no ack policy to avoid 972 * excessive retries. 973 */ 974 noack = !!(res == WILDCARD_SSID_MATCH && 975 is_broadcast_ether_addr(mgmt->da)); 976 977 csa_offs_len = 0; 978 if (hapd->csa_in_progress) { 979 if (hapd->cs_c_off_proberesp) 980 csa_offs[csa_offs_len++] = 981 hapd->cs_c_off_proberesp; 982 983 if (hapd->cs_c_off_ecsa_proberesp) 984 csa_offs[csa_offs_len++] = 985 hapd->cs_c_off_ecsa_proberesp; 986 } 987 988 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack, 989 csa_offs_len ? csa_offs : NULL, 990 csa_offs_len); 991 992 if (ret < 0) 993 wpa_printf(MSG_INFO, "handle_probe_req: send failed"); 994 995 os_free(resp); 996 997 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 998 "SSID", MAC2STR(mgmt->sa), 999 elems.ssid_len == 0 ? "broadcast" : "our"); 1000 } 1001 1002 1003 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 1004 size_t *resp_len) 1005 { 1006 /* check probe response offloading caps and print warnings */ 1007 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 1008 return NULL; 1009 1010 #ifdef CONFIG_WPS 1011 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 1012 (!(hapd->iface->probe_resp_offloads & 1013 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 1014 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 1015 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 1016 "Probe Response while not supporting this"); 1017 #endif /* CONFIG_WPS */ 1018 1019 #ifdef CONFIG_P2P 1020 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 1021 !(hapd->iface->probe_resp_offloads & 1022 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 1023 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 1024 "Probe Response while not supporting this"); 1025 #endif /* CONFIG_P2P */ 1026 1027 if (hapd->conf->interworking && 1028 !(hapd->iface->probe_resp_offloads & 1029 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 1030 wpa_printf(MSG_WARNING, "Device is trying to offload " 1031 "Interworking Probe Response while not supporting " 1032 "this"); 1033 1034 /* Generate a Probe Response template for the non-P2P case */ 1035 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len); 1036 } 1037 1038 #endif /* NEED_AP_MLME */ 1039 1040 1041 void sta_track_del(struct hostapd_sta_info *info) 1042 { 1043 #ifdef CONFIG_TAXONOMY 1044 wpabuf_free(info->probe_ie_taxonomy); 1045 info->probe_ie_taxonomy = NULL; 1046 #endif /* CONFIG_TAXONOMY */ 1047 os_free(info); 1048 } 1049 1050 1051 int ieee802_11_build_ap_params(struct hostapd_data *hapd, 1052 struct wpa_driver_ap_params *params) 1053 { 1054 struct ieee80211_mgmt *head = NULL; 1055 u8 *tail = NULL; 1056 size_t head_len = 0, tail_len = 0; 1057 u8 *resp = NULL; 1058 size_t resp_len = 0; 1059 #ifdef NEED_AP_MLME 1060 u16 capab_info; 1061 u8 *pos, *tailpos, *csa_pos; 1062 1063 #define BEACON_HEAD_BUF_SIZE 256 1064 #define BEACON_TAIL_BUF_SIZE 512 1065 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 1066 tail_len = BEACON_TAIL_BUF_SIZE; 1067 #ifdef CONFIG_WPS 1068 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 1069 tail_len += wpabuf_len(hapd->wps_beacon_ie); 1070 #endif /* CONFIG_WPS */ 1071 #ifdef CONFIG_P2P 1072 if (hapd->p2p_beacon_ie) 1073 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 1074 #endif /* CONFIG_P2P */ 1075 #ifdef CONFIG_FST 1076 if (hapd->iface->fst_ies) 1077 tail_len += wpabuf_len(hapd->iface->fst_ies); 1078 #endif /* CONFIG_FST */ 1079 if (hapd->conf->vendor_elements) 1080 tail_len += wpabuf_len(hapd->conf->vendor_elements); 1081 1082 #ifdef CONFIG_IEEE80211AC 1083 if (hapd->conf->vendor_vht) { 1084 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 1085 2 + sizeof(struct ieee80211_vht_operation); 1086 } 1087 #endif /* CONFIG_IEEE80211AC */ 1088 1089 #ifdef CONFIG_IEEE80211AX 1090 if (hapd->iconf->ieee80211ax) { 1091 tail_len += 3 + sizeof(struct ieee80211_he_capabilities) + 1092 3 + sizeof(struct ieee80211_he_operation) + 1093 3 + sizeof(struct ieee80211_he_mu_edca_parameter_set) + 1094 3 + sizeof(struct ieee80211_spatial_reuse); 1095 } 1096 #endif /* CONFIG_IEEE80211AX */ 1097 1098 tail_len += hostapd_mbo_ie_len(hapd); 1099 tail_len += hostapd_eid_owe_trans_len(hapd); 1100 1101 tailpos = tail = os_malloc(tail_len); 1102 if (head == NULL || tail == NULL) { 1103 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 1104 os_free(head); 1105 os_free(tail); 1106 return -1; 1107 } 1108 1109 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1110 WLAN_FC_STYPE_BEACON); 1111 head->duration = host_to_le16(0); 1112 os_memset(head->da, 0xff, ETH_ALEN); 1113 1114 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 1115 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 1116 head->u.beacon.beacon_int = 1117 host_to_le16(hapd->iconf->beacon_int); 1118 1119 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 1120 capab_info = hostapd_own_capab_info(hapd); 1121 head->u.beacon.capab_info = host_to_le16(capab_info); 1122 pos = &head->u.beacon.variable[0]; 1123 1124 /* SSID */ 1125 *pos++ = WLAN_EID_SSID; 1126 if (hapd->conf->ignore_broadcast_ssid == 2) { 1127 /* clear the data, but keep the correct length of the SSID */ 1128 *pos++ = hapd->conf->ssid.ssid_len; 1129 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 1130 pos += hapd->conf->ssid.ssid_len; 1131 } else if (hapd->conf->ignore_broadcast_ssid) { 1132 *pos++ = 0; /* empty SSID */ 1133 } else { 1134 *pos++ = hapd->conf->ssid.ssid_len; 1135 os_memcpy(pos, hapd->conf->ssid.ssid, 1136 hapd->conf->ssid.ssid_len); 1137 pos += hapd->conf->ssid.ssid_len; 1138 } 1139 1140 /* Supported rates */ 1141 pos = hostapd_eid_supp_rates(hapd, pos); 1142 1143 /* DS Params */ 1144 pos = hostapd_eid_ds_params(hapd, pos); 1145 1146 head_len = pos - (u8 *) head; 1147 1148 tailpos = hostapd_eid_country(hapd, tailpos, 1149 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1150 1151 /* Power Constraint element */ 1152 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos); 1153 1154 /* CSA IE */ 1155 csa_pos = hostapd_eid_csa(hapd, tailpos); 1156 if (csa_pos != tailpos) 1157 hapd->cs_c_off_beacon = csa_pos - tail - 1; 1158 tailpos = csa_pos; 1159 1160 /* ERP Information element */ 1161 tailpos = hostapd_eid_erp_info(hapd, tailpos); 1162 1163 /* Extended supported rates */ 1164 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 1165 1166 /* RSN, MDIE */ 1167 if (hapd->conf->wpa != WPA_PROTO_WPA) 1168 tailpos = hostapd_eid_wpa(hapd, tailpos, 1169 tail + BEACON_TAIL_BUF_SIZE - 1170 tailpos); 1171 1172 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos, 1173 tail + BEACON_TAIL_BUF_SIZE - 1174 tailpos); 1175 1176 tailpos = hostapd_eid_bss_load(hapd, tailpos, 1177 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1178 1179 /* eCSA IE */ 1180 csa_pos = hostapd_eid_ecsa(hapd, tailpos); 1181 if (csa_pos != tailpos) 1182 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1; 1183 tailpos = csa_pos; 1184 1185 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos); 1186 1187 #ifdef CONFIG_IEEE80211N 1188 /* Secondary Channel Offset element */ 1189 /* TODO: The standard doesn't specify a position for this element. */ 1190 tailpos = hostapd_eid_secondary_channel(hapd, tailpos); 1191 1192 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 1193 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 1194 #endif /* CONFIG_IEEE80211N */ 1195 1196 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 1197 1198 /* 1199 * TODO: Time Advertisement element should only be included in some 1200 * DTIM Beacon frames. 1201 */ 1202 tailpos = hostapd_eid_time_adv(hapd, tailpos); 1203 1204 tailpos = hostapd_eid_interworking(hapd, tailpos); 1205 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 1206 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 1207 1208 #ifdef CONFIG_FST 1209 if (hapd->iface->fst_ies) { 1210 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies), 1211 wpabuf_len(hapd->iface->fst_ies)); 1212 tailpos += wpabuf_len(hapd->iface->fst_ies); 1213 } 1214 #endif /* CONFIG_FST */ 1215 1216 #ifdef CONFIG_IEEE80211AC 1217 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 1218 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0); 1219 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 1220 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos); 1221 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos); 1222 } 1223 #endif /* CONFIG_IEEE80211AC */ 1224 1225 tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0); 1226 1227 #ifdef CONFIG_IEEE80211AX 1228 if (hapd->iconf->ieee80211ax) { 1229 tailpos = hostapd_eid_he_capab(hapd, tailpos, 1230 IEEE80211_MODE_AP); 1231 tailpos = hostapd_eid_he_operation(hapd, tailpos); 1232 tailpos = hostapd_eid_he_mu_edca_parameter_set(hapd, tailpos); 1233 tailpos = hostapd_eid_spatial_reuse(hapd, tailpos); 1234 } 1235 #endif /* CONFIG_IEEE80211AX */ 1236 1237 #ifdef CONFIG_IEEE80211AC 1238 if (hapd->conf->vendor_vht) 1239 tailpos = hostapd_eid_vendor_vht(hapd, tailpos); 1240 #endif /* CONFIG_IEEE80211AC */ 1241 1242 /* WPA */ 1243 if (hapd->conf->wpa == WPA_PROTO_WPA) 1244 tailpos = hostapd_eid_wpa(hapd, tailpos, 1245 tail + BEACON_TAIL_BUF_SIZE - 1246 tailpos); 1247 1248 /* Wi-Fi Alliance WMM */ 1249 tailpos = hostapd_eid_wmm(hapd, tailpos); 1250 1251 #ifdef CONFIG_WPS 1252 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 1253 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 1254 wpabuf_len(hapd->wps_beacon_ie)); 1255 tailpos += wpabuf_len(hapd->wps_beacon_ie); 1256 } 1257 #endif /* CONFIG_WPS */ 1258 1259 #ifdef CONFIG_P2P 1260 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 1261 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 1262 wpabuf_len(hapd->p2p_beacon_ie)); 1263 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 1264 } 1265 #endif /* CONFIG_P2P */ 1266 #ifdef CONFIG_P2P_MANAGER 1267 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 1268 P2P_MANAGE) 1269 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 1270 #endif /* CONFIG_P2P_MANAGER */ 1271 1272 #ifdef CONFIG_HS20 1273 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 1274 tailpos = hostapd_eid_osen(hapd, tailpos); 1275 #endif /* CONFIG_HS20 */ 1276 1277 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos); 1278 tailpos = hostapd_eid_owe_trans(hapd, tailpos, 1279 tail + tail_len - tailpos); 1280 1281 if (hapd->conf->vendor_elements) { 1282 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 1283 wpabuf_len(hapd->conf->vendor_elements)); 1284 tailpos += wpabuf_len(hapd->conf->vendor_elements); 1285 } 1286 1287 tail_len = tailpos > tail ? tailpos - tail : 0; 1288 1289 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 1290 #endif /* NEED_AP_MLME */ 1291 1292 os_memset(params, 0, sizeof(*params)); 1293 params->head = (u8 *) head; 1294 params->head_len = head_len; 1295 params->tail = tail; 1296 params->tail_len = tail_len; 1297 params->proberesp = resp; 1298 params->proberesp_len = resp_len; 1299 params->dtim_period = hapd->conf->dtim_period; 1300 params->beacon_int = hapd->iconf->beacon_int; 1301 params->basic_rates = hapd->iface->basic_rates; 1302 params->beacon_rate = hapd->iconf->beacon_rate; 1303 params->rate_type = hapd->iconf->rate_type; 1304 params->ssid = hapd->conf->ssid.ssid; 1305 params->ssid_len = hapd->conf->ssid.ssid_len; 1306 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) == 1307 (WPA_PROTO_WPA | WPA_PROTO_RSN)) 1308 params->pairwise_ciphers = hapd->conf->wpa_pairwise | 1309 hapd->conf->rsn_pairwise; 1310 else if (hapd->conf->wpa & WPA_PROTO_RSN) 1311 params->pairwise_ciphers = hapd->conf->rsn_pairwise; 1312 else if (hapd->conf->wpa & WPA_PROTO_WPA) 1313 params->pairwise_ciphers = hapd->conf->wpa_pairwise; 1314 params->group_cipher = hapd->conf->wpa_group; 1315 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt; 1316 params->auth_algs = hapd->conf->auth_algs; 1317 params->wpa_version = hapd->conf->wpa; 1318 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 1319 (hapd->conf->ieee802_1x && 1320 (hapd->conf->default_wep_key_len || 1321 hapd->conf->individual_wep_key_len)); 1322 switch (hapd->conf->ignore_broadcast_ssid) { 1323 case 0: 1324 params->hide_ssid = NO_SSID_HIDING; 1325 break; 1326 case 1: 1327 params->hide_ssid = HIDDEN_SSID_ZERO_LEN; 1328 break; 1329 case 2: 1330 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 1331 break; 1332 } 1333 params->isolate = hapd->conf->isolate; 1334 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK; 1335 #ifdef NEED_AP_MLME 1336 params->cts_protect = !!(ieee802_11_erp_info(hapd) & 1337 ERP_INFO_USE_PROTECTION); 1338 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 && 1339 hapd->iconf->preamble == SHORT_PREAMBLE; 1340 if (hapd->iface->current_mode && 1341 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1342 params->short_slot_time = 1343 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 1344 else 1345 params->short_slot_time = -1; 1346 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 1347 params->ht_opmode = -1; 1348 else 1349 params->ht_opmode = hapd->iface->ht_op_mode; 1350 #endif /* NEED_AP_MLME */ 1351 params->interworking = hapd->conf->interworking; 1352 if (hapd->conf->interworking && 1353 !is_zero_ether_addr(hapd->conf->hessid)) 1354 params->hessid = hapd->conf->hessid; 1355 params->access_network_type = hapd->conf->access_network_type; 1356 params->ap_max_inactivity = hapd->conf->ap_max_inactivity; 1357 #ifdef CONFIG_P2P 1358 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow; 1359 #endif /* CONFIG_P2P */ 1360 #ifdef CONFIG_HS20 1361 params->disable_dgaf = hapd->conf->disable_dgaf; 1362 if (hapd->conf->osen) { 1363 params->privacy = 1; 1364 params->osen = 1; 1365 } 1366 #endif /* CONFIG_HS20 */ 1367 params->multicast_to_unicast = hapd->conf->multicast_to_unicast; 1368 params->pbss = hapd->conf->pbss; 1369 1370 if (hapd->conf->ftm_responder) { 1371 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_FTM_RESPONDER) { 1372 params->ftm_responder = 1; 1373 params->lci = hapd->iface->conf->lci; 1374 params->civic = hapd->iface->conf->civic; 1375 } else { 1376 wpa_printf(MSG_WARNING, 1377 "Not configuring FTM responder as the driver doesn't advertise support for it"); 1378 } 1379 } 1380 1381 return 0; 1382 } 1383 1384 1385 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params) 1386 { 1387 os_free(params->tail); 1388 params->tail = NULL; 1389 os_free(params->head); 1390 params->head = NULL; 1391 os_free(params->proberesp); 1392 params->proberesp = NULL; 1393 } 1394 1395 1396 int ieee802_11_set_beacon(struct hostapd_data *hapd) 1397 { 1398 struct wpa_driver_ap_params params; 1399 struct hostapd_freq_params freq; 1400 struct hostapd_iface *iface = hapd->iface; 1401 struct hostapd_config *iconf = iface->conf; 1402 struct hostapd_hw_modes *cmode = iface->current_mode; 1403 struct wpabuf *beacon, *proberesp, *assocresp; 1404 int res, ret = -1; 1405 1406 if (hapd->csa_in_progress) { 1407 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period"); 1408 return -1; 1409 } 1410 1411 hapd->beacon_set_done = 1; 1412 1413 if (ieee802_11_build_ap_params(hapd, ¶ms) < 0) 1414 return -1; 1415 1416 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) < 1417 0) 1418 goto fail; 1419 1420 params.beacon_ies = beacon; 1421 params.proberesp_ies = proberesp; 1422 params.assocresp_ies = assocresp; 1423 params.reenable = hapd->reenable_beacon; 1424 hapd->reenable_beacon = 0; 1425 1426 if (cmode && 1427 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq, 1428 iconf->channel, iconf->ieee80211n, 1429 iconf->ieee80211ac, iconf->ieee80211ax, 1430 iconf->secondary_channel, 1431 hostapd_get_oper_chwidth(iconf), 1432 hostapd_get_oper_centr_freq_seg0_idx(iconf), 1433 hostapd_get_oper_centr_freq_seg1_idx(iconf), 1434 cmode->vht_capab, 1435 &cmode->he_capab[IEEE80211_MODE_AP]) == 0) 1436 params.freq = &freq; 1437 1438 res = hostapd_drv_set_ap(hapd, ¶ms); 1439 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 1440 if (res) 1441 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 1442 else 1443 ret = 0; 1444 fail: 1445 ieee802_11_free_ap_params(¶ms); 1446 return ret; 1447 } 1448 1449 1450 int ieee802_11_set_beacons(struct hostapd_iface *iface) 1451 { 1452 size_t i; 1453 int ret = 0; 1454 1455 for (i = 0; i < iface->num_bss; i++) { 1456 if (iface->bss[i]->started && 1457 ieee802_11_set_beacon(iface->bss[i]) < 0) 1458 ret = -1; 1459 } 1460 1461 return ret; 1462 } 1463 1464 1465 /* only update beacons if started */ 1466 int ieee802_11_update_beacons(struct hostapd_iface *iface) 1467 { 1468 size_t i; 1469 int ret = 0; 1470 1471 for (i = 0; i < iface->num_bss; i++) { 1472 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started && 1473 ieee802_11_set_beacon(iface->bss[i]) < 0) 1474 ret = -1; 1475 } 1476 1477 return ret; 1478 } 1479 1480 #endif /* CONFIG_NATIVE_WINDOWS */ 1481