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 hapd->iconf->vht_oper_chwidth, 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 } 402 #endif /* CONFIG_IEEE80211AX */ 403 404 buflen += hostapd_mbo_ie_len(hapd); 405 buflen += hostapd_eid_owe_trans_len(hapd); 406 407 resp = os_zalloc(buflen); 408 if (resp == NULL) 409 return NULL; 410 411 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 412 413 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 414 WLAN_FC_STYPE_PROBE_RESP); 415 if (req) 416 os_memcpy(resp->da, req->sa, ETH_ALEN); 417 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 418 419 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 420 resp->u.probe_resp.beacon_int = 421 host_to_le16(hapd->iconf->beacon_int); 422 423 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 424 resp->u.probe_resp.capab_info = 425 host_to_le16(hostapd_own_capab_info(hapd)); 426 427 pos = resp->u.probe_resp.variable; 428 *pos++ = WLAN_EID_SSID; 429 *pos++ = hapd->conf->ssid.ssid_len; 430 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 431 pos += hapd->conf->ssid.ssid_len; 432 433 /* Supported rates */ 434 pos = hostapd_eid_supp_rates(hapd, pos); 435 436 /* DS Params */ 437 pos = hostapd_eid_ds_params(hapd, pos); 438 439 pos = hostapd_eid_country(hapd, pos, epos - pos); 440 441 /* Power Constraint element */ 442 pos = hostapd_eid_pwr_constraint(hapd, pos); 443 444 /* CSA IE */ 445 csa_pos = hostapd_eid_csa(hapd, pos); 446 if (csa_pos != pos) 447 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1; 448 pos = csa_pos; 449 450 /* ERP Information element */ 451 pos = hostapd_eid_erp_info(hapd, pos); 452 453 /* Extended supported rates */ 454 pos = hostapd_eid_ext_supp_rates(hapd, pos); 455 456 /* RSN, MDIE */ 457 if (hapd->conf->wpa != WPA_PROTO_WPA) 458 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 459 460 pos = hostapd_eid_bss_load(hapd, pos, epos - pos); 461 462 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos); 463 464 /* eCSA IE */ 465 csa_pos = hostapd_eid_ecsa(hapd, pos); 466 if (csa_pos != pos) 467 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1; 468 pos = csa_pos; 469 470 pos = hostapd_eid_supported_op_classes(hapd, pos); 471 472 #ifdef CONFIG_IEEE80211N 473 /* Secondary Channel Offset element */ 474 /* TODO: The standard doesn't specify a position for this element. */ 475 pos = hostapd_eid_secondary_channel(hapd, pos); 476 477 pos = hostapd_eid_ht_capabilities(hapd, pos); 478 pos = hostapd_eid_ht_operation(hapd, pos); 479 #endif /* CONFIG_IEEE80211N */ 480 481 pos = hostapd_eid_ext_capab(hapd, pos); 482 483 pos = hostapd_eid_time_adv(hapd, pos); 484 pos = hostapd_eid_time_zone(hapd, pos); 485 486 pos = hostapd_eid_interworking(hapd, pos); 487 pos = hostapd_eid_adv_proto(hapd, pos); 488 pos = hostapd_eid_roaming_consortium(hapd, pos); 489 490 #ifdef CONFIG_FST 491 if (hapd->iface->fst_ies) { 492 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies), 493 wpabuf_len(hapd->iface->fst_ies)); 494 pos += wpabuf_len(hapd->iface->fst_ies); 495 } 496 #endif /* CONFIG_FST */ 497 498 #ifdef CONFIG_IEEE80211AC 499 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 500 pos = hostapd_eid_vht_capabilities(hapd, pos, 0); 501 pos = hostapd_eid_vht_operation(hapd, pos); 502 pos = hostapd_eid_txpower_envelope(hapd, pos); 503 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos); 504 } 505 #endif /* CONFIG_IEEE80211AC */ 506 507 pos = hostapd_eid_fils_indic(hapd, pos, 0); 508 509 #ifdef CONFIG_IEEE80211AX 510 if (hapd->iconf->ieee80211ax) { 511 pos = hostapd_eid_he_capab(hapd, pos); 512 pos = hostapd_eid_he_operation(hapd, pos); 513 } 514 #endif /* CONFIG_IEEE80211AX */ 515 516 #ifdef CONFIG_IEEE80211AC 517 if (hapd->conf->vendor_vht) 518 pos = hostapd_eid_vendor_vht(hapd, pos); 519 #endif /* CONFIG_IEEE80211AC */ 520 521 /* WPA */ 522 if (hapd->conf->wpa == WPA_PROTO_WPA) 523 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 524 525 /* Wi-Fi Alliance WMM */ 526 pos = hostapd_eid_wmm(hapd, pos); 527 528 #ifdef CONFIG_WPS 529 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 530 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 531 wpabuf_len(hapd->wps_probe_resp_ie)); 532 pos += wpabuf_len(hapd->wps_probe_resp_ie); 533 } 534 #endif /* CONFIG_WPS */ 535 536 #ifdef CONFIG_P2P 537 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 538 hapd->p2p_probe_resp_ie) { 539 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 540 wpabuf_len(hapd->p2p_probe_resp_ie)); 541 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 542 } 543 #endif /* CONFIG_P2P */ 544 #ifdef CONFIG_P2P_MANAGER 545 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 546 P2P_MANAGE) 547 pos = hostapd_eid_p2p_manage(hapd, pos); 548 #endif /* CONFIG_P2P_MANAGER */ 549 550 #ifdef CONFIG_HS20 551 pos = hostapd_eid_hs20_indication(hapd, pos); 552 pos = hostapd_eid_osen(hapd, pos); 553 #endif /* CONFIG_HS20 */ 554 555 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos); 556 pos = hostapd_eid_owe_trans(hapd, pos, (u8 *) resp + buflen - pos); 557 558 if (hapd->conf->vendor_elements) { 559 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 560 wpabuf_len(hapd->conf->vendor_elements)); 561 pos += wpabuf_len(hapd->conf->vendor_elements); 562 } 563 564 *resp_len = pos - (u8 *) resp; 565 return (u8 *) resp; 566 } 567 568 569 enum ssid_match_result { 570 NO_SSID_MATCH, 571 EXACT_SSID_MATCH, 572 WILDCARD_SSID_MATCH 573 }; 574 575 static enum ssid_match_result ssid_match(struct hostapd_data *hapd, 576 const u8 *ssid, size_t ssid_len, 577 const u8 *ssid_list, 578 size_t ssid_list_len) 579 { 580 const u8 *pos, *end; 581 int wildcard = 0; 582 583 if (ssid_len == 0) 584 wildcard = 1; 585 if (ssid_len == hapd->conf->ssid.ssid_len && 586 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0) 587 return EXACT_SSID_MATCH; 588 589 if (ssid_list == NULL) 590 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 591 592 pos = ssid_list; 593 end = ssid_list + ssid_list_len; 594 while (end - pos >= 1) { 595 if (2 + pos[1] > end - pos) 596 break; 597 if (pos[1] == 0) 598 wildcard = 1; 599 if (pos[1] == hapd->conf->ssid.ssid_len && 600 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0) 601 return EXACT_SSID_MATCH; 602 pos += 2 + pos[1]; 603 } 604 605 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 606 } 607 608 609 void sta_track_expire(struct hostapd_iface *iface, int force) 610 { 611 struct os_reltime now; 612 struct hostapd_sta_info *info; 613 614 if (!iface->num_sta_seen) 615 return; 616 617 os_get_reltime(&now); 618 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info, 619 list))) { 620 if (!force && 621 !os_reltime_expired(&now, &info->last_seen, 622 iface->conf->track_sta_max_age)) 623 break; 624 force = 0; 625 626 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for " 627 MACSTR, iface->bss[0]->conf->iface, 628 MAC2STR(info->addr)); 629 dl_list_del(&info->list); 630 iface->num_sta_seen--; 631 sta_track_del(info); 632 } 633 } 634 635 636 static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface, 637 const u8 *addr) 638 { 639 struct hostapd_sta_info *info; 640 641 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list) 642 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0) 643 return info; 644 645 return NULL; 646 } 647 648 649 void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal) 650 { 651 struct hostapd_sta_info *info; 652 653 info = sta_track_get(iface, addr); 654 if (info) { 655 /* Move the most recent entry to the end of the list */ 656 dl_list_del(&info->list); 657 dl_list_add_tail(&iface->sta_seen, &info->list); 658 os_get_reltime(&info->last_seen); 659 info->ssi_signal = ssi_signal; 660 return; 661 } 662 663 /* Add a new entry */ 664 info = os_zalloc(sizeof(*info)); 665 if (info == NULL) 666 return; 667 os_memcpy(info->addr, addr, ETH_ALEN); 668 os_get_reltime(&info->last_seen); 669 info->ssi_signal = ssi_signal; 670 671 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) { 672 /* Expire oldest entry to make room for a new one */ 673 sta_track_expire(iface, 1); 674 } 675 676 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for " 677 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr)); 678 dl_list_add_tail(&iface->sta_seen, &info->list); 679 iface->num_sta_seen++; 680 } 681 682 683 struct hostapd_data * 684 sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr, 685 const char *ifname) 686 { 687 struct hapd_interfaces *interfaces = iface->interfaces; 688 size_t i, j; 689 690 for (i = 0; i < interfaces->count; i++) { 691 struct hostapd_data *hapd = NULL; 692 693 iface = interfaces->iface[i]; 694 for (j = 0; j < iface->num_bss; j++) { 695 hapd = iface->bss[j]; 696 if (os_strcmp(ifname, hapd->conf->iface) == 0) 697 break; 698 hapd = NULL; 699 } 700 701 if (hapd && sta_track_get(iface, addr)) 702 return hapd; 703 } 704 705 return NULL; 706 } 707 708 709 #ifdef CONFIG_TAXONOMY 710 void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr, 711 struct wpabuf **probe_ie_taxonomy) 712 { 713 struct hostapd_sta_info *info; 714 715 info = sta_track_get(iface, addr); 716 if (!info) 717 return; 718 719 wpabuf_free(*probe_ie_taxonomy); 720 *probe_ie_taxonomy = info->probe_ie_taxonomy; 721 info->probe_ie_taxonomy = NULL; 722 } 723 #endif /* CONFIG_TAXONOMY */ 724 725 726 void handle_probe_req(struct hostapd_data *hapd, 727 const struct ieee80211_mgmt *mgmt, size_t len, 728 int ssi_signal) 729 { 730 u8 *resp; 731 struct ieee802_11_elems elems; 732 const u8 *ie; 733 size_t ie_len; 734 size_t i, resp_len; 735 int noack; 736 enum ssid_match_result res; 737 int ret; 738 u16 csa_offs[2]; 739 size_t csa_offs_len; 740 u32 session_timeout, acct_interim_interval; 741 struct vlan_description vlan_id; 742 struct hostapd_sta_wpa_psk_short *psk = NULL; 743 char *identity = NULL; 744 char *radius_cui = NULL; 745 746 if (len < IEEE80211_HDRLEN) 747 return; 748 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN; 749 if (hapd->iconf->track_sta_max_num) 750 sta_track_add(hapd->iface, mgmt->sa, ssi_signal); 751 ie_len = len - IEEE80211_HDRLEN; 752 753 ret = ieee802_11_allowed_address(hapd, mgmt->sa, (const u8 *) mgmt, len, 754 &session_timeout, 755 &acct_interim_interval, &vlan_id, 756 &psk, &identity, &radius_cui, 1); 757 if (ret == HOSTAPD_ACL_REJECT) { 758 wpa_msg(hapd->msg_ctx, MSG_DEBUG, 759 "Ignore Probe Request frame from " MACSTR 760 " due to ACL reject ", MAC2STR(mgmt->sa)); 761 return; 762 } 763 764 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 765 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 766 mgmt->sa, mgmt->da, mgmt->bssid, 767 ie, ie_len, ssi_signal) > 0) 768 return; 769 770 if (!hapd->iconf->send_probe_response) 771 return; 772 773 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 774 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 775 MAC2STR(mgmt->sa)); 776 return; 777 } 778 779 if ((!elems.ssid || !elems.supp_rates)) { 780 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 781 "without SSID or supported rates element", 782 MAC2STR(mgmt->sa)); 783 return; 784 } 785 786 /* 787 * No need to reply if the Probe Request frame was sent on an adjacent 788 * channel. IEEE Std 802.11-2012 describes this as a requirement for an 789 * AP with dot11RadioMeasurementActivated set to true, but strictly 790 * speaking does not allow such ignoring of Probe Request frames if 791 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce 792 * number of unnecessary Probe Response frames for cases where the STA 793 * is less likely to see them (Probe Request frame sent on a 794 * neighboring, but partially overlapping, channel). 795 */ 796 if (elems.ds_params && 797 hapd->iface->current_mode && 798 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G || 799 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) && 800 hapd->iconf->channel != elems.ds_params[0]) { 801 wpa_printf(MSG_DEBUG, 802 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u", 803 hapd->iconf->channel, elems.ds_params[0]); 804 return; 805 } 806 807 #ifdef CONFIG_P2P 808 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) { 809 struct wpabuf *wps; 810 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 811 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 812 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 813 "due to mismatch with Requested Device " 814 "Type"); 815 wpabuf_free(wps); 816 return; 817 } 818 wpabuf_free(wps); 819 } 820 821 if (hapd->p2p && hapd->p2p_group && elems.p2p) { 822 struct wpabuf *p2p; 823 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 824 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 825 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 826 "due to mismatch with Device ID"); 827 wpabuf_free(p2p); 828 return; 829 } 830 wpabuf_free(p2p); 831 } 832 #endif /* CONFIG_P2P */ 833 834 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 && 835 elems.ssid_list_len == 0) { 836 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 837 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 838 return; 839 } 840 841 #ifdef CONFIG_P2P 842 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 843 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 844 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 845 P2P_WILDCARD_SSID_LEN) == 0) { 846 /* Process P2P Wildcard SSID like Wildcard SSID */ 847 elems.ssid_len = 0; 848 } 849 #endif /* CONFIG_P2P */ 850 851 #ifdef CONFIG_TAXONOMY 852 { 853 struct sta_info *sta; 854 struct hostapd_sta_info *info; 855 856 if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) { 857 taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len); 858 } else if ((info = sta_track_get(hapd->iface, 859 mgmt->sa)) != NULL) { 860 taxonomy_hostapd_sta_info_probe_req(hapd, info, 861 ie, ie_len); 862 } 863 } 864 #endif /* CONFIG_TAXONOMY */ 865 866 res = ssid_match(hapd, elems.ssid, elems.ssid_len, 867 elems.ssid_list, elems.ssid_list_len); 868 if (res == NO_SSID_MATCH) { 869 if (!(mgmt->da[0] & 0x01)) { 870 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 871 " for foreign SSID '%s' (DA " MACSTR ")%s", 872 MAC2STR(mgmt->sa), 873 wpa_ssid_txt(elems.ssid, elems.ssid_len), 874 MAC2STR(mgmt->da), 875 elems.ssid_list ? " (SSID list)" : ""); 876 } 877 return; 878 } 879 880 #ifdef CONFIG_INTERWORKING 881 if (hapd->conf->interworking && 882 elems.interworking && elems.interworking_len >= 1) { 883 u8 ant = elems.interworking[0] & 0x0f; 884 if (ant != INTERWORKING_ANT_WILDCARD && 885 ant != hapd->conf->access_network_type) { 886 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 887 " for mismatching ANT %u ignored", 888 MAC2STR(mgmt->sa), ant); 889 return; 890 } 891 } 892 893 if (hapd->conf->interworking && elems.interworking && 894 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 895 const u8 *hessid; 896 if (elems.interworking_len == 7) 897 hessid = elems.interworking + 1; 898 else 899 hessid = elems.interworking + 1 + 2; 900 if (!is_broadcast_ether_addr(hessid) && 901 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 902 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 903 " for mismatching HESSID " MACSTR 904 " ignored", 905 MAC2STR(mgmt->sa), MAC2STR(hessid)); 906 return; 907 } 908 } 909 #endif /* CONFIG_INTERWORKING */ 910 911 #ifdef CONFIG_P2P 912 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 913 supp_rates_11b_only(&elems)) { 914 /* Indicates support for 11b rates only */ 915 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from " 916 MACSTR " with only 802.11b rates", 917 MAC2STR(mgmt->sa)); 918 return; 919 } 920 #endif /* CONFIG_P2P */ 921 922 /* TODO: verify that supp_rates contains at least one matching rate 923 * with AP configuration */ 924 925 if (hapd->conf->no_probe_resp_if_seen_on && 926 is_multicast_ether_addr(mgmt->da) && 927 is_multicast_ether_addr(mgmt->bssid) && 928 sta_track_seen_on(hapd->iface, mgmt->sa, 929 hapd->conf->no_probe_resp_if_seen_on)) { 930 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 931 " since STA has been seen on %s", 932 hapd->conf->iface, MAC2STR(mgmt->sa), 933 hapd->conf->no_probe_resp_if_seen_on); 934 return; 935 } 936 937 if (hapd->conf->no_probe_resp_if_max_sta && 938 is_multicast_ether_addr(mgmt->da) && 939 is_multicast_ether_addr(mgmt->bssid) && 940 hapd->num_sta >= hapd->conf->max_num_sta && 941 !ap_get_sta(hapd, mgmt->sa)) { 942 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 943 " since no room for additional STA", 944 hapd->conf->iface, MAC2STR(mgmt->sa)); 945 return; 946 } 947 948 #ifdef CONFIG_TESTING_OPTIONS 949 if (hapd->iconf->ignore_probe_probability > 0.0 && 950 drand48() < hapd->iconf->ignore_probe_probability) { 951 wpa_printf(MSG_INFO, 952 "TESTING: ignoring probe request from " MACSTR, 953 MAC2STR(mgmt->sa)); 954 return; 955 } 956 #endif /* CONFIG_TESTING_OPTIONS */ 957 958 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, RX_PROBE_REQUEST "sa=" MACSTR 959 " signal=%d", MAC2STR(mgmt->sa), ssi_signal); 960 961 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL, 962 &resp_len); 963 if (resp == NULL) 964 return; 965 966 /* 967 * If this is a broadcast probe request, apply no ack policy to avoid 968 * excessive retries. 969 */ 970 noack = !!(res == WILDCARD_SSID_MATCH && 971 is_broadcast_ether_addr(mgmt->da)); 972 973 csa_offs_len = 0; 974 if (hapd->csa_in_progress) { 975 if (hapd->cs_c_off_proberesp) 976 csa_offs[csa_offs_len++] = 977 hapd->cs_c_off_proberesp; 978 979 if (hapd->cs_c_off_ecsa_proberesp) 980 csa_offs[csa_offs_len++] = 981 hapd->cs_c_off_ecsa_proberesp; 982 } 983 984 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack, 985 csa_offs_len ? csa_offs : NULL, 986 csa_offs_len); 987 988 if (ret < 0) 989 wpa_printf(MSG_INFO, "handle_probe_req: send failed"); 990 991 os_free(resp); 992 993 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 994 "SSID", MAC2STR(mgmt->sa), 995 elems.ssid_len == 0 ? "broadcast" : "our"); 996 } 997 998 999 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 1000 size_t *resp_len) 1001 { 1002 /* check probe response offloading caps and print warnings */ 1003 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 1004 return NULL; 1005 1006 #ifdef CONFIG_WPS 1007 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 1008 (!(hapd->iface->probe_resp_offloads & 1009 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 1010 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 1011 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 1012 "Probe Response while not supporting this"); 1013 #endif /* CONFIG_WPS */ 1014 1015 #ifdef CONFIG_P2P 1016 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 1017 !(hapd->iface->probe_resp_offloads & 1018 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 1019 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 1020 "Probe Response while not supporting this"); 1021 #endif /* CONFIG_P2P */ 1022 1023 if (hapd->conf->interworking && 1024 !(hapd->iface->probe_resp_offloads & 1025 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 1026 wpa_printf(MSG_WARNING, "Device is trying to offload " 1027 "Interworking Probe Response while not supporting " 1028 "this"); 1029 1030 /* Generate a Probe Response template for the non-P2P case */ 1031 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len); 1032 } 1033 1034 #endif /* NEED_AP_MLME */ 1035 1036 1037 void sta_track_del(struct hostapd_sta_info *info) 1038 { 1039 #ifdef CONFIG_TAXONOMY 1040 wpabuf_free(info->probe_ie_taxonomy); 1041 info->probe_ie_taxonomy = NULL; 1042 #endif /* CONFIG_TAXONOMY */ 1043 os_free(info); 1044 } 1045 1046 1047 int ieee802_11_build_ap_params(struct hostapd_data *hapd, 1048 struct wpa_driver_ap_params *params) 1049 { 1050 struct ieee80211_mgmt *head = NULL; 1051 u8 *tail = NULL; 1052 size_t head_len = 0, tail_len = 0; 1053 u8 *resp = NULL; 1054 size_t resp_len = 0; 1055 #ifdef NEED_AP_MLME 1056 u16 capab_info; 1057 u8 *pos, *tailpos, *csa_pos; 1058 1059 #define BEACON_HEAD_BUF_SIZE 256 1060 #define BEACON_TAIL_BUF_SIZE 512 1061 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 1062 tail_len = BEACON_TAIL_BUF_SIZE; 1063 #ifdef CONFIG_WPS 1064 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 1065 tail_len += wpabuf_len(hapd->wps_beacon_ie); 1066 #endif /* CONFIG_WPS */ 1067 #ifdef CONFIG_P2P 1068 if (hapd->p2p_beacon_ie) 1069 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 1070 #endif /* CONFIG_P2P */ 1071 #ifdef CONFIG_FST 1072 if (hapd->iface->fst_ies) 1073 tail_len += wpabuf_len(hapd->iface->fst_ies); 1074 #endif /* CONFIG_FST */ 1075 if (hapd->conf->vendor_elements) 1076 tail_len += wpabuf_len(hapd->conf->vendor_elements); 1077 1078 #ifdef CONFIG_IEEE80211AC 1079 if (hapd->conf->vendor_vht) { 1080 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 1081 2 + sizeof(struct ieee80211_vht_operation); 1082 } 1083 #endif /* CONFIG_IEEE80211AC */ 1084 1085 #ifdef CONFIG_IEEE80211AX 1086 if (hapd->iconf->ieee80211ax) { 1087 tail_len += 3 + sizeof(struct ieee80211_he_capabilities) + 1088 3 + sizeof(struct ieee80211_he_operation); 1089 } 1090 #endif /* CONFIG_IEEE80211AX */ 1091 1092 tail_len += hostapd_mbo_ie_len(hapd); 1093 tail_len += hostapd_eid_owe_trans_len(hapd); 1094 1095 tailpos = tail = os_malloc(tail_len); 1096 if (head == NULL || tail == NULL) { 1097 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 1098 os_free(head); 1099 os_free(tail); 1100 return -1; 1101 } 1102 1103 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1104 WLAN_FC_STYPE_BEACON); 1105 head->duration = host_to_le16(0); 1106 os_memset(head->da, 0xff, ETH_ALEN); 1107 1108 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 1109 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 1110 head->u.beacon.beacon_int = 1111 host_to_le16(hapd->iconf->beacon_int); 1112 1113 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 1114 capab_info = hostapd_own_capab_info(hapd); 1115 head->u.beacon.capab_info = host_to_le16(capab_info); 1116 pos = &head->u.beacon.variable[0]; 1117 1118 /* SSID */ 1119 *pos++ = WLAN_EID_SSID; 1120 if (hapd->conf->ignore_broadcast_ssid == 2) { 1121 /* clear the data, but keep the correct length of the SSID */ 1122 *pos++ = hapd->conf->ssid.ssid_len; 1123 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 1124 pos += hapd->conf->ssid.ssid_len; 1125 } else if (hapd->conf->ignore_broadcast_ssid) { 1126 *pos++ = 0; /* empty SSID */ 1127 } else { 1128 *pos++ = hapd->conf->ssid.ssid_len; 1129 os_memcpy(pos, hapd->conf->ssid.ssid, 1130 hapd->conf->ssid.ssid_len); 1131 pos += hapd->conf->ssid.ssid_len; 1132 } 1133 1134 /* Supported rates */ 1135 pos = hostapd_eid_supp_rates(hapd, pos); 1136 1137 /* DS Params */ 1138 pos = hostapd_eid_ds_params(hapd, pos); 1139 1140 head_len = pos - (u8 *) head; 1141 1142 tailpos = hostapd_eid_country(hapd, tailpos, 1143 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1144 1145 /* Power Constraint element */ 1146 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos); 1147 1148 /* CSA IE */ 1149 csa_pos = hostapd_eid_csa(hapd, tailpos); 1150 if (csa_pos != tailpos) 1151 hapd->cs_c_off_beacon = csa_pos - tail - 1; 1152 tailpos = csa_pos; 1153 1154 /* ERP Information element */ 1155 tailpos = hostapd_eid_erp_info(hapd, tailpos); 1156 1157 /* Extended supported rates */ 1158 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 1159 1160 /* RSN, MDIE */ 1161 if (hapd->conf->wpa != WPA_PROTO_WPA) 1162 tailpos = hostapd_eid_wpa(hapd, tailpos, 1163 tail + BEACON_TAIL_BUF_SIZE - 1164 tailpos); 1165 1166 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos, 1167 tail + BEACON_TAIL_BUF_SIZE - 1168 tailpos); 1169 1170 tailpos = hostapd_eid_bss_load(hapd, tailpos, 1171 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1172 1173 /* eCSA IE */ 1174 csa_pos = hostapd_eid_ecsa(hapd, tailpos); 1175 if (csa_pos != tailpos) 1176 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1; 1177 tailpos = csa_pos; 1178 1179 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos); 1180 1181 #ifdef CONFIG_IEEE80211N 1182 /* Secondary Channel Offset element */ 1183 /* TODO: The standard doesn't specify a position for this element. */ 1184 tailpos = hostapd_eid_secondary_channel(hapd, tailpos); 1185 1186 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 1187 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 1188 #endif /* CONFIG_IEEE80211N */ 1189 1190 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 1191 1192 /* 1193 * TODO: Time Advertisement element should only be included in some 1194 * DTIM Beacon frames. 1195 */ 1196 tailpos = hostapd_eid_time_adv(hapd, tailpos); 1197 1198 tailpos = hostapd_eid_interworking(hapd, tailpos); 1199 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 1200 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 1201 1202 #ifdef CONFIG_FST 1203 if (hapd->iface->fst_ies) { 1204 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies), 1205 wpabuf_len(hapd->iface->fst_ies)); 1206 tailpos += wpabuf_len(hapd->iface->fst_ies); 1207 } 1208 #endif /* CONFIG_FST */ 1209 1210 #ifdef CONFIG_IEEE80211AC 1211 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 1212 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0); 1213 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 1214 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos); 1215 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos); 1216 } 1217 #endif /* CONFIG_IEEE80211AC */ 1218 1219 tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0); 1220 1221 #ifdef CONFIG_IEEE80211AX 1222 if (hapd->iconf->ieee80211ax) { 1223 tailpos = hostapd_eid_he_capab(hapd, tailpos); 1224 tailpos = hostapd_eid_he_operation(hapd, tailpos); 1225 } 1226 #endif /* CONFIG_IEEE80211AX */ 1227 1228 #ifdef CONFIG_IEEE80211AC 1229 if (hapd->conf->vendor_vht) 1230 tailpos = hostapd_eid_vendor_vht(hapd, tailpos); 1231 #endif /* CONFIG_IEEE80211AC */ 1232 1233 /* WPA */ 1234 if (hapd->conf->wpa == WPA_PROTO_WPA) 1235 tailpos = hostapd_eid_wpa(hapd, tailpos, 1236 tail + BEACON_TAIL_BUF_SIZE - 1237 tailpos); 1238 1239 /* Wi-Fi Alliance WMM */ 1240 tailpos = hostapd_eid_wmm(hapd, tailpos); 1241 1242 #ifdef CONFIG_WPS 1243 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 1244 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 1245 wpabuf_len(hapd->wps_beacon_ie)); 1246 tailpos += wpabuf_len(hapd->wps_beacon_ie); 1247 } 1248 #endif /* CONFIG_WPS */ 1249 1250 #ifdef CONFIG_P2P 1251 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 1252 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 1253 wpabuf_len(hapd->p2p_beacon_ie)); 1254 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 1255 } 1256 #endif /* CONFIG_P2P */ 1257 #ifdef CONFIG_P2P_MANAGER 1258 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 1259 P2P_MANAGE) 1260 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 1261 #endif /* CONFIG_P2P_MANAGER */ 1262 1263 #ifdef CONFIG_HS20 1264 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 1265 tailpos = hostapd_eid_osen(hapd, tailpos); 1266 #endif /* CONFIG_HS20 */ 1267 1268 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos); 1269 tailpos = hostapd_eid_owe_trans(hapd, tailpos, 1270 tail + tail_len - tailpos); 1271 1272 if (hapd->conf->vendor_elements) { 1273 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 1274 wpabuf_len(hapd->conf->vendor_elements)); 1275 tailpos += wpabuf_len(hapd->conf->vendor_elements); 1276 } 1277 1278 tail_len = tailpos > tail ? tailpos - tail : 0; 1279 1280 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 1281 #endif /* NEED_AP_MLME */ 1282 1283 os_memset(params, 0, sizeof(*params)); 1284 params->head = (u8 *) head; 1285 params->head_len = head_len; 1286 params->tail = tail; 1287 params->tail_len = tail_len; 1288 params->proberesp = resp; 1289 params->proberesp_len = resp_len; 1290 params->dtim_period = hapd->conf->dtim_period; 1291 params->beacon_int = hapd->iconf->beacon_int; 1292 params->basic_rates = hapd->iface->basic_rates; 1293 params->beacon_rate = hapd->iconf->beacon_rate; 1294 params->rate_type = hapd->iconf->rate_type; 1295 params->ssid = hapd->conf->ssid.ssid; 1296 params->ssid_len = hapd->conf->ssid.ssid_len; 1297 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) == 1298 (WPA_PROTO_WPA | WPA_PROTO_RSN)) 1299 params->pairwise_ciphers = hapd->conf->wpa_pairwise | 1300 hapd->conf->rsn_pairwise; 1301 else if (hapd->conf->wpa & WPA_PROTO_RSN) 1302 params->pairwise_ciphers = hapd->conf->rsn_pairwise; 1303 else if (hapd->conf->wpa & WPA_PROTO_WPA) 1304 params->pairwise_ciphers = hapd->conf->wpa_pairwise; 1305 params->group_cipher = hapd->conf->wpa_group; 1306 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt; 1307 params->auth_algs = hapd->conf->auth_algs; 1308 params->wpa_version = hapd->conf->wpa; 1309 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 1310 (hapd->conf->ieee802_1x && 1311 (hapd->conf->default_wep_key_len || 1312 hapd->conf->individual_wep_key_len)); 1313 switch (hapd->conf->ignore_broadcast_ssid) { 1314 case 0: 1315 params->hide_ssid = NO_SSID_HIDING; 1316 break; 1317 case 1: 1318 params->hide_ssid = HIDDEN_SSID_ZERO_LEN; 1319 break; 1320 case 2: 1321 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 1322 break; 1323 } 1324 params->isolate = hapd->conf->isolate; 1325 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK; 1326 #ifdef NEED_AP_MLME 1327 params->cts_protect = !!(ieee802_11_erp_info(hapd) & 1328 ERP_INFO_USE_PROTECTION); 1329 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 && 1330 hapd->iconf->preamble == SHORT_PREAMBLE; 1331 if (hapd->iface->current_mode && 1332 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1333 params->short_slot_time = 1334 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 1335 else 1336 params->short_slot_time = -1; 1337 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 1338 params->ht_opmode = -1; 1339 else 1340 params->ht_opmode = hapd->iface->ht_op_mode; 1341 #endif /* NEED_AP_MLME */ 1342 params->interworking = hapd->conf->interworking; 1343 if (hapd->conf->interworking && 1344 !is_zero_ether_addr(hapd->conf->hessid)) 1345 params->hessid = hapd->conf->hessid; 1346 params->access_network_type = hapd->conf->access_network_type; 1347 params->ap_max_inactivity = hapd->conf->ap_max_inactivity; 1348 #ifdef CONFIG_P2P 1349 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow; 1350 #endif /* CONFIG_P2P */ 1351 #ifdef CONFIG_HS20 1352 params->disable_dgaf = hapd->conf->disable_dgaf; 1353 if (hapd->conf->osen) { 1354 params->privacy = 1; 1355 params->osen = 1; 1356 } 1357 #endif /* CONFIG_HS20 */ 1358 params->multicast_to_unicast = hapd->conf->multicast_to_unicast; 1359 params->pbss = hapd->conf->pbss; 1360 return 0; 1361 } 1362 1363 1364 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params) 1365 { 1366 os_free(params->tail); 1367 params->tail = NULL; 1368 os_free(params->head); 1369 params->head = NULL; 1370 os_free(params->proberesp); 1371 params->proberesp = NULL; 1372 } 1373 1374 1375 int ieee802_11_set_beacon(struct hostapd_data *hapd) 1376 { 1377 struct wpa_driver_ap_params params; 1378 struct hostapd_freq_params freq; 1379 struct hostapd_iface *iface = hapd->iface; 1380 struct hostapd_config *iconf = iface->conf; 1381 struct wpabuf *beacon, *proberesp, *assocresp; 1382 int res, ret = -1; 1383 1384 if (hapd->csa_in_progress) { 1385 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period"); 1386 return -1; 1387 } 1388 1389 hapd->beacon_set_done = 1; 1390 1391 if (ieee802_11_build_ap_params(hapd, ¶ms) < 0) 1392 return -1; 1393 1394 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) < 1395 0) 1396 goto fail; 1397 1398 params.beacon_ies = beacon; 1399 params.proberesp_ies = proberesp; 1400 params.assocresp_ies = assocresp; 1401 params.reenable = hapd->reenable_beacon; 1402 hapd->reenable_beacon = 0; 1403 1404 if (iface->current_mode && 1405 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq, 1406 iconf->channel, iconf->ieee80211n, 1407 iconf->ieee80211ac, 1408 iconf->secondary_channel, 1409 iconf->vht_oper_chwidth, 1410 iconf->vht_oper_centr_freq_seg0_idx, 1411 iconf->vht_oper_centr_freq_seg1_idx, 1412 iface->current_mode->vht_capab) == 0) 1413 params.freq = &freq; 1414 1415 res = hostapd_drv_set_ap(hapd, ¶ms); 1416 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 1417 if (res) 1418 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 1419 else 1420 ret = 0; 1421 fail: 1422 ieee802_11_free_ap_params(¶ms); 1423 return ret; 1424 } 1425 1426 1427 int ieee802_11_set_beacons(struct hostapd_iface *iface) 1428 { 1429 size_t i; 1430 int ret = 0; 1431 1432 for (i = 0; i < iface->num_bss; i++) { 1433 if (iface->bss[i]->started && 1434 ieee802_11_set_beacon(iface->bss[i]) < 0) 1435 ret = -1; 1436 } 1437 1438 return ret; 1439 } 1440 1441 1442 /* only update beacons if started */ 1443 int ieee802_11_update_beacons(struct hostapd_iface *iface) 1444 { 1445 size_t i; 1446 int ret = 0; 1447 1448 for (i = 0; i < iface->num_bss; i++) { 1449 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started && 1450 ieee802_11_set_beacon(iface->bss[i]) < 0) 1451 ret = -1; 1452 } 1453 1454 return ret; 1455 } 1456 1457 #endif /* CONFIG_NATIVE_WINDOWS */ 1458