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 (at) 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 "wps/wps_defs.h" 20 #include "p2p/p2p.h" 21 #include "hostapd.h" 22 #include "ieee802_11.h" 23 #include "wpa_auth.h" 24 #include "wmm.h" 25 #include "ap_config.h" 26 #include "sta_info.h" 27 #include "p2p_hostapd.h" 28 #include "ap_drv_ops.h" 29 #include "beacon.h" 30 #include "hs20.h" 31 #include "dfs.h" 32 #include "taxonomy.h" 33 34 35 #ifdef NEED_AP_MLME 36 37 static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid, 38 size_t len) 39 { 40 size_t i; 41 42 for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) { 43 if (hapd->conf->radio_measurements[i]) 44 break; 45 } 46 47 if (i == RRM_CAPABILITIES_IE_LEN || len < 2 + RRM_CAPABILITIES_IE_LEN) 48 return eid; 49 50 *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES; 51 *eid++ = RRM_CAPABILITIES_IE_LEN; 52 os_memcpy(eid, hapd->conf->radio_measurements, RRM_CAPABILITIES_IE_LEN); 53 54 return eid + RRM_CAPABILITIES_IE_LEN; 55 } 56 57 58 static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len) 59 { 60 if (len < 2 + 5) 61 return eid; 62 63 #ifdef CONFIG_TESTING_OPTIONS 64 if (hapd->conf->bss_load_test_set) { 65 *eid++ = WLAN_EID_BSS_LOAD; 66 *eid++ = 5; 67 os_memcpy(eid, hapd->conf->bss_load_test, 5); 68 eid += 5; 69 return eid; 70 } 71 #endif /* CONFIG_TESTING_OPTIONS */ 72 if (hapd->conf->bss_load_update_period) { 73 *eid++ = WLAN_EID_BSS_LOAD; 74 *eid++ = 5; 75 WPA_PUT_LE16(eid, hapd->num_sta); 76 eid += 2; 77 *eid++ = hapd->iface->channel_utilization; 78 WPA_PUT_LE16(eid, 0); /* no available admission capabity */ 79 eid += 2; 80 } 81 return eid; 82 } 83 84 85 static u8 ieee802_11_erp_info(struct hostapd_data *hapd) 86 { 87 u8 erp = 0; 88 89 if (hapd->iface->current_mode == NULL || 90 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 91 return 0; 92 93 if (hapd->iface->olbc) 94 erp |= ERP_INFO_USE_PROTECTION; 95 if (hapd->iface->num_sta_non_erp > 0) { 96 erp |= ERP_INFO_NON_ERP_PRESENT | 97 ERP_INFO_USE_PROTECTION; 98 } 99 if (hapd->iface->num_sta_no_short_preamble > 0 || 100 hapd->iconf->preamble == LONG_PREAMBLE) 101 erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 102 103 return erp; 104 } 105 106 107 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 108 { 109 *eid++ = WLAN_EID_DS_PARAMS; 110 *eid++ = 1; 111 *eid++ = hapd->iconf->channel; 112 return eid; 113 } 114 115 116 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 117 { 118 if (hapd->iface->current_mode == NULL || 119 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 120 return eid; 121 122 /* Set NonERP_present and use_protection bits if there 123 * are any associated NonERP stations. */ 124 /* TODO: use_protection bit can be set to zero even if 125 * there are NonERP stations present. This optimization 126 * might be useful if NonERP stations are "quiet". 127 * See 802.11g/D6 E-1 for recommended practice. 128 * In addition, Non ERP present might be set, if AP detects Non ERP 129 * operation on other APs. */ 130 131 /* Add ERP Information element */ 132 *eid++ = WLAN_EID_ERP_INFO; 133 *eid++ = 1; 134 *eid++ = ieee802_11_erp_info(hapd); 135 136 return eid; 137 } 138 139 140 static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid) 141 { 142 u8 *pos = eid; 143 u8 local_pwr_constraint = 0; 144 int dfs; 145 146 if (hapd->iface->current_mode == NULL || 147 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A) 148 return eid; 149 150 /* Let host drivers add this IE if DFS support is offloaded */ 151 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) 152 return eid; 153 154 /* 155 * There is no DFS support and power constraint was not directly 156 * requested by config option. 157 */ 158 if (!hapd->iconf->ieee80211h && 159 hapd->iconf->local_pwr_constraint == -1) 160 return eid; 161 162 /* Check if DFS is required by regulatory. */ 163 dfs = hostapd_is_dfs_required(hapd->iface); 164 if (dfs < 0) { 165 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d", 166 dfs); 167 dfs = 0; 168 } 169 170 if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1) 171 return eid; 172 173 /* 174 * ieee80211h (DFS) is enabled so Power Constraint element shall 175 * be added when running on DFS channel whenever local_pwr_constraint 176 * is configured or not. In order to meet regulations when TPC is not 177 * implemented using a transmit power that is below the legal maximum 178 * (including any mitigation factor) should help. In this case, 179 * indicate 3 dB below maximum allowed transmit power. 180 */ 181 if (hapd->iconf->local_pwr_constraint == -1) 182 local_pwr_constraint = 3; 183 184 /* 185 * A STA that is not an AP shall use a transmit power less than or 186 * equal to the local maximum transmit power level for the channel. 187 * The local maximum transmit power can be calculated from the formula: 188 * local max TX pwr = max TX pwr - local pwr constraint 189 * Where max TX pwr is maximum transmit power level specified for 190 * channel in Country element and local pwr constraint is specified 191 * for channel in this Power Constraint element. 192 */ 193 194 /* Element ID */ 195 *pos++ = WLAN_EID_PWR_CONSTRAINT; 196 /* Length */ 197 *pos++ = 1; 198 /* Local Power Constraint */ 199 if (local_pwr_constraint) 200 *pos++ = local_pwr_constraint; 201 else 202 *pos++ = hapd->iconf->local_pwr_constraint; 203 204 return pos; 205 } 206 207 208 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 209 struct hostapd_channel_data *start, 210 struct hostapd_channel_data *prev) 211 { 212 if (end - pos < 3) 213 return pos; 214 215 /* first channel number */ 216 *pos++ = start->chan; 217 /* number of channels */ 218 *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 219 /* maximum transmit power level */ 220 *pos++ = start->max_tx_power; 221 222 return pos; 223 } 224 225 226 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 227 int max_len) 228 { 229 u8 *pos = eid; 230 u8 *end = eid + max_len; 231 int i; 232 struct hostapd_hw_modes *mode; 233 struct hostapd_channel_data *start, *prev; 234 int chan_spacing = 1; 235 236 if (!hapd->iconf->ieee80211d || max_len < 6 || 237 hapd->iface->current_mode == NULL) 238 return eid; 239 240 *pos++ = WLAN_EID_COUNTRY; 241 pos++; /* length will be set later */ 242 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 243 pos += 3; 244 245 mode = hapd->iface->current_mode; 246 if (mode->mode == HOSTAPD_MODE_IEEE80211A) 247 chan_spacing = 4; 248 249 start = prev = NULL; 250 for (i = 0; i < mode->num_channels; i++) { 251 struct hostapd_channel_data *chan = &mode->channels[i]; 252 if (chan->flag & HOSTAPD_CHAN_DISABLED) 253 continue; 254 if (start && prev && 255 prev->chan + chan_spacing == chan->chan && 256 start->max_tx_power == chan->max_tx_power) { 257 prev = chan; 258 continue; /* can use same entry */ 259 } 260 261 if (start && prev) { 262 pos = hostapd_eid_country_add(pos, end, chan_spacing, 263 start, prev); 264 start = NULL; 265 } 266 267 /* Start new group */ 268 start = prev = chan; 269 } 270 271 if (start) { 272 pos = hostapd_eid_country_add(pos, end, chan_spacing, 273 start, prev); 274 } 275 276 if ((pos - eid) & 1) { 277 if (end - pos < 1) 278 return eid; 279 *pos++ = 0; /* pad for 16-bit alignment */ 280 } 281 282 eid[1] = (pos - eid) - 2; 283 284 return pos; 285 } 286 287 288 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len) 289 { 290 const u8 *ie; 291 size_t ielen; 292 293 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 294 if (ie == NULL || ielen > len) 295 return eid; 296 297 os_memcpy(eid, ie, ielen); 298 return eid + ielen; 299 } 300 301 302 static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid) 303 { 304 #ifdef CONFIG_TESTING_OPTIONS 305 if (hapd->iface->cs_oper_class && hapd->iconf->ecsa_ie_only) 306 return eid; 307 #endif /* CONFIG_TESTING_OPTIONS */ 308 309 if (!hapd->cs_freq_params.channel) 310 return eid; 311 312 *eid++ = WLAN_EID_CHANNEL_SWITCH; 313 *eid++ = 3; 314 *eid++ = hapd->cs_block_tx; 315 *eid++ = hapd->cs_freq_params.channel; 316 *eid++ = hapd->cs_count; 317 318 return eid; 319 } 320 321 322 static u8 * hostapd_eid_ecsa(struct hostapd_data *hapd, u8 *eid) 323 { 324 if (!hapd->cs_freq_params.channel || !hapd->iface->cs_oper_class) 325 return eid; 326 327 *eid++ = WLAN_EID_EXT_CHANSWITCH_ANN; 328 *eid++ = 4; 329 *eid++ = hapd->cs_block_tx; 330 *eid++ = hapd->iface->cs_oper_class; 331 *eid++ = hapd->cs_freq_params.channel; 332 *eid++ = hapd->cs_count; 333 334 return eid; 335 } 336 337 338 static u8 * hostapd_eid_supported_op_classes(struct hostapd_data *hapd, u8 *eid) 339 { 340 u8 op_class, channel; 341 342 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) || 343 !hapd->iface->freq) 344 return eid; 345 346 if (ieee80211_freq_to_channel_ext(hapd->iface->freq, 347 hapd->iconf->secondary_channel, 348 hapd->iconf->vht_oper_chwidth, 349 &op_class, &channel) == 350 NUM_HOSTAPD_MODES) 351 return eid; 352 353 *eid++ = WLAN_EID_SUPPORTED_OPERATING_CLASSES; 354 *eid++ = 2; 355 356 /* Current Operating Class */ 357 *eid++ = op_class; 358 359 /* TODO: Advertise all the supported operating classes */ 360 *eid++ = 0; 361 362 return eid; 363 } 364 365 366 #ifdef CONFIG_OWE 367 static int hostapd_eid_owe_trans_enabled(struct hostapd_data *hapd) 368 { 369 return hapd->conf->owe_transition_ssid_len > 0 && 370 !is_zero_ether_addr(hapd->conf->owe_transition_bssid); 371 } 372 #endif /* CONFIG_OWE */ 373 374 375 static size_t hostapd_eid_owe_trans_len(struct hostapd_data *hapd) 376 { 377 #ifdef CONFIG_OWE 378 if (!hostapd_eid_owe_trans_enabled(hapd)) 379 return 0; 380 return 6 + ETH_ALEN + 1 + hapd->conf->owe_transition_ssid_len; 381 #else /* CONFIG_OWE */ 382 return 0; 383 #endif /* CONFIG_OWE */ 384 } 385 386 387 static u8 * hostapd_eid_owe_trans(struct hostapd_data *hapd, u8 *eid, 388 size_t len) 389 { 390 #ifdef CONFIG_OWE 391 u8 *pos = eid; 392 size_t elen; 393 394 if (hapd->conf->owe_transition_ifname[0] && 395 !hostapd_eid_owe_trans_enabled(hapd)) 396 hostapd_owe_trans_get_info(hapd); 397 398 if (!hostapd_eid_owe_trans_enabled(hapd)) 399 return pos; 400 401 elen = hostapd_eid_owe_trans_len(hapd); 402 if (len < elen) { 403 wpa_printf(MSG_DEBUG, 404 "OWE: Not enough room in the buffer for OWE IE"); 405 return pos; 406 } 407 408 *pos++ = WLAN_EID_VENDOR_SPECIFIC; 409 *pos++ = elen - 2; 410 WPA_PUT_BE24(pos, OUI_WFA); 411 pos += 3; 412 *pos++ = OWE_OUI_TYPE; 413 os_memcpy(pos, hapd->conf->owe_transition_bssid, ETH_ALEN); 414 pos += ETH_ALEN; 415 *pos++ = hapd->conf->owe_transition_ssid_len; 416 os_memcpy(pos, hapd->conf->owe_transition_ssid, 417 hapd->conf->owe_transition_ssid_len); 418 pos += hapd->conf->owe_transition_ssid_len; 419 420 return pos; 421 #else /* CONFIG_OWE */ 422 return eid; 423 #endif /* CONFIG_OWE */ 424 } 425 426 427 static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd, 428 const struct ieee80211_mgmt *req, 429 int is_p2p, size_t *resp_len) 430 { 431 struct ieee80211_mgmt *resp; 432 u8 *pos, *epos, *csa_pos; 433 size_t buflen; 434 435 #define MAX_PROBERESP_LEN 768 436 buflen = MAX_PROBERESP_LEN; 437 #ifdef CONFIG_WPS 438 if (hapd->wps_probe_resp_ie) 439 buflen += wpabuf_len(hapd->wps_probe_resp_ie); 440 #endif /* CONFIG_WPS */ 441 #ifdef CONFIG_P2P 442 if (hapd->p2p_probe_resp_ie) 443 buflen += wpabuf_len(hapd->p2p_probe_resp_ie); 444 #endif /* CONFIG_P2P */ 445 #ifdef CONFIG_FST 446 if (hapd->iface->fst_ies) 447 buflen += wpabuf_len(hapd->iface->fst_ies); 448 #endif /* CONFIG_FST */ 449 if (hapd->conf->vendor_elements) 450 buflen += wpabuf_len(hapd->conf->vendor_elements); 451 if (hapd->conf->vendor_vht) { 452 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 453 2 + sizeof(struct ieee80211_vht_operation); 454 } 455 456 #ifdef CONFIG_IEEE80211AX 457 if (hapd->iconf->ieee80211ax) { 458 buflen += 3 + sizeof(struct ieee80211_he_capabilities) + 459 3 + sizeof(struct ieee80211_he_operation); 460 } 461 #endif /* CONFIG_IEEE80211AX */ 462 463 buflen += hostapd_mbo_ie_len(hapd); 464 buflen += hostapd_eid_owe_trans_len(hapd); 465 466 resp = os_zalloc(buflen); 467 if (resp == NULL) 468 return NULL; 469 470 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 471 472 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 473 WLAN_FC_STYPE_PROBE_RESP); 474 if (req) 475 os_memcpy(resp->da, req->sa, ETH_ALEN); 476 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 477 478 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 479 resp->u.probe_resp.beacon_int = 480 host_to_le16(hapd->iconf->beacon_int); 481 482 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 483 resp->u.probe_resp.capab_info = 484 host_to_le16(hostapd_own_capab_info(hapd)); 485 486 pos = resp->u.probe_resp.variable; 487 *pos++ = WLAN_EID_SSID; 488 *pos++ = hapd->conf->ssid.ssid_len; 489 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 490 pos += hapd->conf->ssid.ssid_len; 491 492 /* Supported rates */ 493 pos = hostapd_eid_supp_rates(hapd, pos); 494 495 /* DS Params */ 496 pos = hostapd_eid_ds_params(hapd, pos); 497 498 pos = hostapd_eid_country(hapd, pos, epos - pos); 499 500 /* Power Constraint element */ 501 pos = hostapd_eid_pwr_constraint(hapd, pos); 502 503 /* CSA IE */ 504 csa_pos = hostapd_eid_csa(hapd, pos); 505 if (csa_pos != pos) 506 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1; 507 pos = csa_pos; 508 509 /* ERP Information element */ 510 pos = hostapd_eid_erp_info(hapd, pos); 511 512 /* Extended supported rates */ 513 pos = hostapd_eid_ext_supp_rates(hapd, pos); 514 515 /* RSN, MDIE, WPA */ 516 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 517 518 pos = hostapd_eid_bss_load(hapd, pos, epos - pos); 519 520 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos); 521 522 /* eCSA IE */ 523 csa_pos = hostapd_eid_ecsa(hapd, pos); 524 if (csa_pos != pos) 525 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1; 526 pos = csa_pos; 527 528 pos = hostapd_eid_supported_op_classes(hapd, pos); 529 530 #ifdef CONFIG_IEEE80211N 531 /* Secondary Channel Offset element */ 532 /* TODO: The standard doesn't specify a position for this element. */ 533 pos = hostapd_eid_secondary_channel(hapd, pos); 534 535 pos = hostapd_eid_ht_capabilities(hapd, pos); 536 pos = hostapd_eid_ht_operation(hapd, pos); 537 #endif /* CONFIG_IEEE80211N */ 538 539 pos = hostapd_eid_ext_capab(hapd, pos); 540 541 pos = hostapd_eid_time_adv(hapd, pos); 542 pos = hostapd_eid_time_zone(hapd, pos); 543 544 pos = hostapd_eid_interworking(hapd, pos); 545 pos = hostapd_eid_adv_proto(hapd, pos); 546 pos = hostapd_eid_roaming_consortium(hapd, pos); 547 548 #ifdef CONFIG_FST 549 if (hapd->iface->fst_ies) { 550 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies), 551 wpabuf_len(hapd->iface->fst_ies)); 552 pos += wpabuf_len(hapd->iface->fst_ies); 553 } 554 #endif /* CONFIG_FST */ 555 556 #ifdef CONFIG_IEEE80211AC 557 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 558 pos = hostapd_eid_vht_capabilities(hapd, pos, 0); 559 pos = hostapd_eid_vht_operation(hapd, pos); 560 pos = hostapd_eid_txpower_envelope(hapd, pos); 561 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos); 562 } 563 #endif /* CONFIG_IEEE80211AC */ 564 565 pos = hostapd_eid_fils_indic(hapd, pos, 0); 566 567 #ifdef CONFIG_IEEE80211AX 568 if (hapd->iconf->ieee80211ax) { 569 pos = hostapd_eid_he_capab(hapd, pos); 570 pos = hostapd_eid_he_operation(hapd, pos); 571 } 572 #endif /* CONFIG_IEEE80211AX */ 573 574 #ifdef CONFIG_IEEE80211AC 575 if (hapd->conf->vendor_vht) 576 pos = hostapd_eid_vendor_vht(hapd, pos); 577 #endif /* CONFIG_IEEE80211AC */ 578 579 /* Wi-Fi Alliance WMM */ 580 pos = hostapd_eid_wmm(hapd, pos); 581 582 #ifdef CONFIG_WPS 583 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 584 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 585 wpabuf_len(hapd->wps_probe_resp_ie)); 586 pos += wpabuf_len(hapd->wps_probe_resp_ie); 587 } 588 #endif /* CONFIG_WPS */ 589 590 #ifdef CONFIG_P2P 591 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 592 hapd->p2p_probe_resp_ie) { 593 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 594 wpabuf_len(hapd->p2p_probe_resp_ie)); 595 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 596 } 597 #endif /* CONFIG_P2P */ 598 #ifdef CONFIG_P2P_MANAGER 599 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 600 P2P_MANAGE) 601 pos = hostapd_eid_p2p_manage(hapd, pos); 602 #endif /* CONFIG_P2P_MANAGER */ 603 604 #ifdef CONFIG_HS20 605 pos = hostapd_eid_hs20_indication(hapd, pos); 606 pos = hostapd_eid_osen(hapd, pos); 607 #endif /* CONFIG_HS20 */ 608 609 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos); 610 pos = hostapd_eid_owe_trans(hapd, pos, (u8 *) resp + buflen - pos); 611 612 if (hapd->conf->vendor_elements) { 613 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 614 wpabuf_len(hapd->conf->vendor_elements)); 615 pos += wpabuf_len(hapd->conf->vendor_elements); 616 } 617 618 *resp_len = pos - (u8 *) resp; 619 return (u8 *) resp; 620 } 621 622 623 enum ssid_match_result { 624 NO_SSID_MATCH, 625 EXACT_SSID_MATCH, 626 WILDCARD_SSID_MATCH 627 }; 628 629 static enum ssid_match_result ssid_match(struct hostapd_data *hapd, 630 const u8 *ssid, size_t ssid_len, 631 const u8 *ssid_list, 632 size_t ssid_list_len) 633 { 634 const u8 *pos, *end; 635 int wildcard = 0; 636 637 if (ssid_len == 0) 638 wildcard = 1; 639 if (ssid_len == hapd->conf->ssid.ssid_len && 640 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0) 641 return EXACT_SSID_MATCH; 642 643 if (ssid_list == NULL) 644 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 645 646 pos = ssid_list; 647 end = ssid_list + ssid_list_len; 648 while (end - pos >= 1) { 649 if (2 + pos[1] > end - pos) 650 break; 651 if (pos[1] == 0) 652 wildcard = 1; 653 if (pos[1] == hapd->conf->ssid.ssid_len && 654 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0) 655 return EXACT_SSID_MATCH; 656 pos += 2 + pos[1]; 657 } 658 659 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 660 } 661 662 663 void sta_track_expire(struct hostapd_iface *iface, int force) 664 { 665 struct os_reltime now; 666 struct hostapd_sta_info *info; 667 668 if (!iface->num_sta_seen) 669 return; 670 671 os_get_reltime(&now); 672 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info, 673 list))) { 674 if (!force && 675 !os_reltime_expired(&now, &info->last_seen, 676 iface->conf->track_sta_max_age)) 677 break; 678 force = 0; 679 680 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for " 681 MACSTR, iface->bss[0]->conf->iface, 682 MAC2STR(info->addr)); 683 dl_list_del(&info->list); 684 iface->num_sta_seen--; 685 sta_track_del(info); 686 } 687 } 688 689 690 static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface, 691 const u8 *addr) 692 { 693 struct hostapd_sta_info *info; 694 695 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list) 696 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0) 697 return info; 698 699 return NULL; 700 } 701 702 703 void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal) 704 { 705 struct hostapd_sta_info *info; 706 707 info = sta_track_get(iface, addr); 708 if (info) { 709 /* Move the most recent entry to the end of the list */ 710 dl_list_del(&info->list); 711 dl_list_add_tail(&iface->sta_seen, &info->list); 712 os_get_reltime(&info->last_seen); 713 info->ssi_signal = ssi_signal; 714 return; 715 } 716 717 /* Add a new entry */ 718 info = os_zalloc(sizeof(*info)); 719 if (info == NULL) 720 return; 721 os_memcpy(info->addr, addr, ETH_ALEN); 722 os_get_reltime(&info->last_seen); 723 info->ssi_signal = ssi_signal; 724 725 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) { 726 /* Expire oldest entry to make room for a new one */ 727 sta_track_expire(iface, 1); 728 } 729 730 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for " 731 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr)); 732 dl_list_add_tail(&iface->sta_seen, &info->list); 733 iface->num_sta_seen++; 734 } 735 736 737 struct hostapd_data * 738 sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr, 739 const char *ifname) 740 { 741 struct hapd_interfaces *interfaces = iface->interfaces; 742 size_t i, j; 743 744 for (i = 0; i < interfaces->count; i++) { 745 struct hostapd_data *hapd = NULL; 746 747 iface = interfaces->iface[i]; 748 for (j = 0; j < iface->num_bss; j++) { 749 hapd = iface->bss[j]; 750 if (os_strcmp(ifname, hapd->conf->iface) == 0) 751 break; 752 hapd = NULL; 753 } 754 755 if (hapd && sta_track_get(iface, addr)) 756 return hapd; 757 } 758 759 return NULL; 760 } 761 762 763 #ifdef CONFIG_TAXONOMY 764 void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr, 765 struct wpabuf **probe_ie_taxonomy) 766 { 767 struct hostapd_sta_info *info; 768 769 info = sta_track_get(iface, addr); 770 if (!info) 771 return; 772 773 wpabuf_free(*probe_ie_taxonomy); 774 *probe_ie_taxonomy = info->probe_ie_taxonomy; 775 info->probe_ie_taxonomy = NULL; 776 } 777 #endif /* CONFIG_TAXONOMY */ 778 779 780 void handle_probe_req(struct hostapd_data *hapd, 781 const struct ieee80211_mgmt *mgmt, size_t len, 782 int ssi_signal) 783 { 784 u8 *resp; 785 struct ieee802_11_elems elems; 786 const u8 *ie; 787 size_t ie_len; 788 size_t i, resp_len; 789 int noack; 790 enum ssid_match_result res; 791 int ret; 792 u16 csa_offs[2]; 793 size_t csa_offs_len; 794 795 if (len < IEEE80211_HDRLEN) 796 return; 797 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN; 798 if (hapd->iconf->track_sta_max_num) 799 sta_track_add(hapd->iface, mgmt->sa, ssi_signal); 800 ie_len = len - IEEE80211_HDRLEN; 801 802 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 803 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 804 mgmt->sa, mgmt->da, mgmt->bssid, 805 ie, ie_len, ssi_signal) > 0) 806 return; 807 808 if (!hapd->iconf->send_probe_response) 809 return; 810 811 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 812 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 813 MAC2STR(mgmt->sa)); 814 return; 815 } 816 817 if ((!elems.ssid || !elems.supp_rates)) { 818 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 819 "without SSID or supported rates element", 820 MAC2STR(mgmt->sa)); 821 return; 822 } 823 824 /* 825 * No need to reply if the Probe Request frame was sent on an adjacent 826 * channel. IEEE Std 802.11-2012 describes this as a requirement for an 827 * AP with dot11RadioMeasurementActivated set to true, but strictly 828 * speaking does not allow such ignoring of Probe Request frames if 829 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce 830 * number of unnecessary Probe Response frames for cases where the STA 831 * is less likely to see them (Probe Request frame sent on a 832 * neighboring, but partially overlapping, channel). 833 */ 834 if (elems.ds_params && 835 hapd->iface->current_mode && 836 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G || 837 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) && 838 hapd->iconf->channel != elems.ds_params[0]) { 839 wpa_printf(MSG_DEBUG, 840 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u", 841 hapd->iconf->channel, elems.ds_params[0]); 842 return; 843 } 844 845 #ifdef CONFIG_P2P 846 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) { 847 struct wpabuf *wps; 848 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 849 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 850 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 851 "due to mismatch with Requested Device " 852 "Type"); 853 wpabuf_free(wps); 854 return; 855 } 856 wpabuf_free(wps); 857 } 858 859 if (hapd->p2p && hapd->p2p_group && elems.p2p) { 860 struct wpabuf *p2p; 861 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 862 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 863 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 864 "due to mismatch with Device ID"); 865 wpabuf_free(p2p); 866 return; 867 } 868 wpabuf_free(p2p); 869 } 870 #endif /* CONFIG_P2P */ 871 872 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 && 873 elems.ssid_list_len == 0) { 874 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 875 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 876 return; 877 } 878 879 #ifdef CONFIG_P2P 880 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 881 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 882 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 883 P2P_WILDCARD_SSID_LEN) == 0) { 884 /* Process P2P Wildcard SSID like Wildcard SSID */ 885 elems.ssid_len = 0; 886 } 887 #endif /* CONFIG_P2P */ 888 889 #ifdef CONFIG_TAXONOMY 890 { 891 struct sta_info *sta; 892 struct hostapd_sta_info *info; 893 894 if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) { 895 taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len); 896 } else if ((info = sta_track_get(hapd->iface, 897 mgmt->sa)) != NULL) { 898 taxonomy_hostapd_sta_info_probe_req(hapd, info, 899 ie, ie_len); 900 } 901 } 902 #endif /* CONFIG_TAXONOMY */ 903 904 res = ssid_match(hapd, elems.ssid, elems.ssid_len, 905 elems.ssid_list, elems.ssid_list_len); 906 if (res == NO_SSID_MATCH) { 907 if (!(mgmt->da[0] & 0x01)) { 908 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 909 " for foreign SSID '%s' (DA " MACSTR ")%s", 910 MAC2STR(mgmt->sa), 911 wpa_ssid_txt(elems.ssid, elems.ssid_len), 912 MAC2STR(mgmt->da), 913 elems.ssid_list ? " (SSID list)" : ""); 914 } 915 return; 916 } 917 918 #ifdef CONFIG_INTERWORKING 919 if (hapd->conf->interworking && 920 elems.interworking && elems.interworking_len >= 1) { 921 u8 ant = elems.interworking[0] & 0x0f; 922 if (ant != INTERWORKING_ANT_WILDCARD && 923 ant != hapd->conf->access_network_type) { 924 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 925 " for mismatching ANT %u ignored", 926 MAC2STR(mgmt->sa), ant); 927 return; 928 } 929 } 930 931 if (hapd->conf->interworking && elems.interworking && 932 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 933 const u8 *hessid; 934 if (elems.interworking_len == 7) 935 hessid = elems.interworking + 1; 936 else 937 hessid = elems.interworking + 1 + 2; 938 if (!is_broadcast_ether_addr(hessid) && 939 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 940 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 941 " for mismatching HESSID " MACSTR 942 " ignored", 943 MAC2STR(mgmt->sa), MAC2STR(hessid)); 944 return; 945 } 946 } 947 #endif /* CONFIG_INTERWORKING */ 948 949 #ifdef CONFIG_P2P 950 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 951 supp_rates_11b_only(&elems)) { 952 /* Indicates support for 11b rates only */ 953 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from " 954 MACSTR " with only 802.11b rates", 955 MAC2STR(mgmt->sa)); 956 return; 957 } 958 #endif /* CONFIG_P2P */ 959 960 /* TODO: verify that supp_rates contains at least one matching rate 961 * with AP configuration */ 962 963 if (hapd->conf->no_probe_resp_if_seen_on && 964 is_multicast_ether_addr(mgmt->da) && 965 is_multicast_ether_addr(mgmt->bssid) && 966 sta_track_seen_on(hapd->iface, mgmt->sa, 967 hapd->conf->no_probe_resp_if_seen_on)) { 968 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 969 " since STA has been seen on %s", 970 hapd->conf->iface, MAC2STR(mgmt->sa), 971 hapd->conf->no_probe_resp_if_seen_on); 972 return; 973 } 974 975 if (hapd->conf->no_probe_resp_if_max_sta && 976 is_multicast_ether_addr(mgmt->da) && 977 is_multicast_ether_addr(mgmt->bssid) && 978 hapd->num_sta >= hapd->conf->max_num_sta && 979 !ap_get_sta(hapd, mgmt->sa)) { 980 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 981 " since no room for additional STA", 982 hapd->conf->iface, MAC2STR(mgmt->sa)); 983 return; 984 } 985 986 #ifdef CONFIG_TESTING_OPTIONS 987 if (hapd->iconf->ignore_probe_probability > 0.0 && 988 drand48() < hapd->iconf->ignore_probe_probability) { 989 wpa_printf(MSG_INFO, 990 "TESTING: ignoring probe request from " MACSTR, 991 MAC2STR(mgmt->sa)); 992 return; 993 } 994 #endif /* CONFIG_TESTING_OPTIONS */ 995 996 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL, 997 &resp_len); 998 if (resp == NULL) 999 return; 1000 1001 /* 1002 * If this is a broadcast probe request, apply no ack policy to avoid 1003 * excessive retries. 1004 */ 1005 noack = !!(res == WILDCARD_SSID_MATCH && 1006 is_broadcast_ether_addr(mgmt->da)); 1007 1008 csa_offs_len = 0; 1009 if (hapd->csa_in_progress) { 1010 if (hapd->cs_c_off_proberesp) 1011 csa_offs[csa_offs_len++] = 1012 hapd->cs_c_off_proberesp; 1013 1014 if (hapd->cs_c_off_ecsa_proberesp) 1015 csa_offs[csa_offs_len++] = 1016 hapd->cs_c_off_ecsa_proberesp; 1017 } 1018 1019 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack, 1020 csa_offs_len ? csa_offs : NULL, 1021 csa_offs_len); 1022 1023 if (ret < 0) 1024 wpa_printf(MSG_INFO, "handle_probe_req: send failed"); 1025 1026 os_free(resp); 1027 1028 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 1029 "SSID", MAC2STR(mgmt->sa), 1030 elems.ssid_len == 0 ? "broadcast" : "our"); 1031 } 1032 1033 1034 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 1035 size_t *resp_len) 1036 { 1037 /* check probe response offloading caps and print warnings */ 1038 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 1039 return NULL; 1040 1041 #ifdef CONFIG_WPS 1042 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 1043 (!(hapd->iface->probe_resp_offloads & 1044 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 1045 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 1046 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 1047 "Probe Response while not supporting this"); 1048 #endif /* CONFIG_WPS */ 1049 1050 #ifdef CONFIG_P2P 1051 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 1052 !(hapd->iface->probe_resp_offloads & 1053 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 1054 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 1055 "Probe Response while not supporting this"); 1056 #endif /* CONFIG_P2P */ 1057 1058 if (hapd->conf->interworking && 1059 !(hapd->iface->probe_resp_offloads & 1060 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 1061 wpa_printf(MSG_WARNING, "Device is trying to offload " 1062 "Interworking Probe Response while not supporting " 1063 "this"); 1064 1065 /* Generate a Probe Response template for the non-P2P case */ 1066 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len); 1067 } 1068 1069 #endif /* NEED_AP_MLME */ 1070 1071 1072 void sta_track_del(struct hostapd_sta_info *info) 1073 { 1074 #ifdef CONFIG_TAXONOMY 1075 wpabuf_free(info->probe_ie_taxonomy); 1076 info->probe_ie_taxonomy = NULL; 1077 #endif /* CONFIG_TAXONOMY */ 1078 os_free(info); 1079 } 1080 1081 1082 int ieee802_11_build_ap_params(struct hostapd_data *hapd, 1083 struct wpa_driver_ap_params *params) 1084 { 1085 struct ieee80211_mgmt *head = NULL; 1086 u8 *tail = NULL; 1087 size_t head_len = 0, tail_len = 0; 1088 u8 *resp = NULL; 1089 size_t resp_len = 0; 1090 #ifdef NEED_AP_MLME 1091 u16 capab_info; 1092 u8 *pos, *tailpos, *csa_pos; 1093 1094 #define BEACON_HEAD_BUF_SIZE 256 1095 #define BEACON_TAIL_BUF_SIZE 512 1096 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 1097 tail_len = BEACON_TAIL_BUF_SIZE; 1098 #ifdef CONFIG_WPS 1099 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 1100 tail_len += wpabuf_len(hapd->wps_beacon_ie); 1101 #endif /* CONFIG_WPS */ 1102 #ifdef CONFIG_P2P 1103 if (hapd->p2p_beacon_ie) 1104 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 1105 #endif /* CONFIG_P2P */ 1106 #ifdef CONFIG_FST 1107 if (hapd->iface->fst_ies) 1108 tail_len += wpabuf_len(hapd->iface->fst_ies); 1109 #endif /* CONFIG_FST */ 1110 if (hapd->conf->vendor_elements) 1111 tail_len += wpabuf_len(hapd->conf->vendor_elements); 1112 1113 #ifdef CONFIG_IEEE80211AC 1114 if (hapd->conf->vendor_vht) { 1115 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 1116 2 + sizeof(struct ieee80211_vht_operation); 1117 } 1118 #endif /* CONFIG_IEEE80211AC */ 1119 1120 #ifdef CONFIG_IEEE80211AX 1121 if (hapd->iconf->ieee80211ax) { 1122 tail_len += 3 + sizeof(struct ieee80211_he_capabilities) + 1123 3 + sizeof(struct ieee80211_he_operation); 1124 } 1125 #endif /* CONFIG_IEEE80211AX */ 1126 1127 tail_len += hostapd_mbo_ie_len(hapd); 1128 tail_len += hostapd_eid_owe_trans_len(hapd); 1129 1130 tailpos = tail = os_malloc(tail_len); 1131 if (head == NULL || tail == NULL) { 1132 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 1133 os_free(head); 1134 os_free(tail); 1135 return -1; 1136 } 1137 1138 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1139 WLAN_FC_STYPE_BEACON); 1140 head->duration = host_to_le16(0); 1141 os_memset(head->da, 0xff, ETH_ALEN); 1142 1143 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 1144 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 1145 head->u.beacon.beacon_int = 1146 host_to_le16(hapd->iconf->beacon_int); 1147 1148 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 1149 capab_info = hostapd_own_capab_info(hapd); 1150 head->u.beacon.capab_info = host_to_le16(capab_info); 1151 pos = &head->u.beacon.variable[0]; 1152 1153 /* SSID */ 1154 *pos++ = WLAN_EID_SSID; 1155 if (hapd->conf->ignore_broadcast_ssid == 2) { 1156 /* clear the data, but keep the correct length of the SSID */ 1157 *pos++ = hapd->conf->ssid.ssid_len; 1158 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 1159 pos += hapd->conf->ssid.ssid_len; 1160 } else if (hapd->conf->ignore_broadcast_ssid) { 1161 *pos++ = 0; /* empty SSID */ 1162 } else { 1163 *pos++ = hapd->conf->ssid.ssid_len; 1164 os_memcpy(pos, hapd->conf->ssid.ssid, 1165 hapd->conf->ssid.ssid_len); 1166 pos += hapd->conf->ssid.ssid_len; 1167 } 1168 1169 /* Supported rates */ 1170 pos = hostapd_eid_supp_rates(hapd, pos); 1171 1172 /* DS Params */ 1173 pos = hostapd_eid_ds_params(hapd, pos); 1174 1175 head_len = pos - (u8 *) head; 1176 1177 tailpos = hostapd_eid_country(hapd, tailpos, 1178 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1179 1180 /* Power Constraint element */ 1181 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos); 1182 1183 /* CSA IE */ 1184 csa_pos = hostapd_eid_csa(hapd, tailpos); 1185 if (csa_pos != tailpos) 1186 hapd->cs_c_off_beacon = csa_pos - tail - 1; 1187 tailpos = csa_pos; 1188 1189 /* ERP Information element */ 1190 tailpos = hostapd_eid_erp_info(hapd, tailpos); 1191 1192 /* Extended supported rates */ 1193 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 1194 1195 /* RSN, MDIE, WPA */ 1196 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE - 1197 tailpos); 1198 1199 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos, 1200 tail + BEACON_TAIL_BUF_SIZE - 1201 tailpos); 1202 1203 tailpos = hostapd_eid_bss_load(hapd, tailpos, 1204 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1205 1206 /* eCSA IE */ 1207 csa_pos = hostapd_eid_ecsa(hapd, tailpos); 1208 if (csa_pos != tailpos) 1209 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1; 1210 tailpos = csa_pos; 1211 1212 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos); 1213 1214 #ifdef CONFIG_IEEE80211N 1215 /* Secondary Channel Offset element */ 1216 /* TODO: The standard doesn't specify a position for this element. */ 1217 tailpos = hostapd_eid_secondary_channel(hapd, tailpos); 1218 1219 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 1220 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 1221 #endif /* CONFIG_IEEE80211N */ 1222 1223 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 1224 1225 /* 1226 * TODO: Time Advertisement element should only be included in some 1227 * DTIM Beacon frames. 1228 */ 1229 tailpos = hostapd_eid_time_adv(hapd, tailpos); 1230 1231 tailpos = hostapd_eid_interworking(hapd, tailpos); 1232 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 1233 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 1234 1235 #ifdef CONFIG_FST 1236 if (hapd->iface->fst_ies) { 1237 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies), 1238 wpabuf_len(hapd->iface->fst_ies)); 1239 tailpos += wpabuf_len(hapd->iface->fst_ies); 1240 } 1241 #endif /* CONFIG_FST */ 1242 1243 #ifdef CONFIG_IEEE80211AC 1244 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 1245 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0); 1246 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 1247 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos); 1248 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos); 1249 } 1250 #endif /* CONFIG_IEEE80211AC */ 1251 1252 tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0); 1253 1254 #ifdef CONFIG_IEEE80211AX 1255 if (hapd->iconf->ieee80211ax) { 1256 tailpos = hostapd_eid_he_capab(hapd, tailpos); 1257 tailpos = hostapd_eid_he_operation(hapd, tailpos); 1258 } 1259 #endif /* CONFIG_IEEE80211AX */ 1260 1261 #ifdef CONFIG_IEEE80211AC 1262 if (hapd->conf->vendor_vht) 1263 tailpos = hostapd_eid_vendor_vht(hapd, tailpos); 1264 #endif /* CONFIG_IEEE80211AC */ 1265 1266 /* Wi-Fi Alliance WMM */ 1267 tailpos = hostapd_eid_wmm(hapd, tailpos); 1268 1269 #ifdef CONFIG_WPS 1270 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 1271 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 1272 wpabuf_len(hapd->wps_beacon_ie)); 1273 tailpos += wpabuf_len(hapd->wps_beacon_ie); 1274 } 1275 #endif /* CONFIG_WPS */ 1276 1277 #ifdef CONFIG_P2P 1278 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 1279 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 1280 wpabuf_len(hapd->p2p_beacon_ie)); 1281 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 1282 } 1283 #endif /* CONFIG_P2P */ 1284 #ifdef CONFIG_P2P_MANAGER 1285 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 1286 P2P_MANAGE) 1287 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 1288 #endif /* CONFIG_P2P_MANAGER */ 1289 1290 #ifdef CONFIG_HS20 1291 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 1292 tailpos = hostapd_eid_osen(hapd, tailpos); 1293 #endif /* CONFIG_HS20 */ 1294 1295 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos); 1296 tailpos = hostapd_eid_owe_trans(hapd, tailpos, 1297 tail + tail_len - tailpos); 1298 1299 if (hapd->conf->vendor_elements) { 1300 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 1301 wpabuf_len(hapd->conf->vendor_elements)); 1302 tailpos += wpabuf_len(hapd->conf->vendor_elements); 1303 } 1304 1305 tail_len = tailpos > tail ? tailpos - tail : 0; 1306 1307 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 1308 #endif /* NEED_AP_MLME */ 1309 1310 os_memset(params, 0, sizeof(*params)); 1311 params->head = (u8 *) head; 1312 params->head_len = head_len; 1313 params->tail = tail; 1314 params->tail_len = tail_len; 1315 params->proberesp = resp; 1316 params->proberesp_len = resp_len; 1317 params->dtim_period = hapd->conf->dtim_period; 1318 params->beacon_int = hapd->iconf->beacon_int; 1319 params->basic_rates = hapd->iface->basic_rates; 1320 params->beacon_rate = hapd->iconf->beacon_rate; 1321 params->rate_type = hapd->iconf->rate_type; 1322 params->ssid = hapd->conf->ssid.ssid; 1323 params->ssid_len = hapd->conf->ssid.ssid_len; 1324 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) == 1325 (WPA_PROTO_WPA | WPA_PROTO_RSN)) 1326 params->pairwise_ciphers = hapd->conf->wpa_pairwise | 1327 hapd->conf->rsn_pairwise; 1328 else if (hapd->conf->wpa & WPA_PROTO_RSN) 1329 params->pairwise_ciphers = hapd->conf->rsn_pairwise; 1330 else if (hapd->conf->wpa & WPA_PROTO_WPA) 1331 params->pairwise_ciphers = hapd->conf->wpa_pairwise; 1332 params->group_cipher = hapd->conf->wpa_group; 1333 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt; 1334 params->auth_algs = hapd->conf->auth_algs; 1335 params->wpa_version = hapd->conf->wpa; 1336 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 1337 (hapd->conf->ieee802_1x && 1338 (hapd->conf->default_wep_key_len || 1339 hapd->conf->individual_wep_key_len)); 1340 switch (hapd->conf->ignore_broadcast_ssid) { 1341 case 0: 1342 params->hide_ssid = NO_SSID_HIDING; 1343 break; 1344 case 1: 1345 params->hide_ssid = HIDDEN_SSID_ZERO_LEN; 1346 break; 1347 case 2: 1348 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 1349 break; 1350 } 1351 params->isolate = hapd->conf->isolate; 1352 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK; 1353 #ifdef NEED_AP_MLME 1354 params->cts_protect = !!(ieee802_11_erp_info(hapd) & 1355 ERP_INFO_USE_PROTECTION); 1356 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 && 1357 hapd->iconf->preamble == SHORT_PREAMBLE; 1358 if (hapd->iface->current_mode && 1359 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1360 params->short_slot_time = 1361 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 1362 else 1363 params->short_slot_time = -1; 1364 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 1365 params->ht_opmode = -1; 1366 else 1367 params->ht_opmode = hapd->iface->ht_op_mode; 1368 #endif /* NEED_AP_MLME */ 1369 params->interworking = hapd->conf->interworking; 1370 if (hapd->conf->interworking && 1371 !is_zero_ether_addr(hapd->conf->hessid)) 1372 params->hessid = hapd->conf->hessid; 1373 params->access_network_type = hapd->conf->access_network_type; 1374 params->ap_max_inactivity = hapd->conf->ap_max_inactivity; 1375 #ifdef CONFIG_P2P 1376 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow; 1377 #endif /* CONFIG_P2P */ 1378 #ifdef CONFIG_HS20 1379 params->disable_dgaf = hapd->conf->disable_dgaf; 1380 if (hapd->conf->osen) { 1381 params->privacy = 1; 1382 params->osen = 1; 1383 } 1384 #endif /* CONFIG_HS20 */ 1385 params->multicast_to_unicast = hapd->conf->multicast_to_unicast; 1386 params->pbss = hapd->conf->pbss; 1387 return 0; 1388 } 1389 1390 1391 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params) 1392 { 1393 os_free(params->tail); 1394 params->tail = NULL; 1395 os_free(params->head); 1396 params->head = NULL; 1397 os_free(params->proberesp); 1398 params->proberesp = NULL; 1399 } 1400 1401 1402 int ieee802_11_set_beacon(struct hostapd_data *hapd) 1403 { 1404 struct wpa_driver_ap_params params; 1405 struct hostapd_freq_params freq; 1406 struct hostapd_iface *iface = hapd->iface; 1407 struct hostapd_config *iconf = iface->conf; 1408 struct wpabuf *beacon, *proberesp, *assocresp; 1409 int res, ret = -1; 1410 1411 if (hapd->csa_in_progress) { 1412 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period"); 1413 return -1; 1414 } 1415 1416 hapd->beacon_set_done = 1; 1417 1418 if (ieee802_11_build_ap_params(hapd, ¶ms) < 0) 1419 return -1; 1420 1421 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) < 1422 0) 1423 goto fail; 1424 1425 params.beacon_ies = beacon; 1426 params.proberesp_ies = proberesp; 1427 params.assocresp_ies = assocresp; 1428 params.reenable = hapd->reenable_beacon; 1429 hapd->reenable_beacon = 0; 1430 1431 if (iface->current_mode && 1432 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq, 1433 iconf->channel, iconf->ieee80211n, 1434 iconf->ieee80211ac, 1435 iconf->secondary_channel, 1436 iconf->vht_oper_chwidth, 1437 iconf->vht_oper_centr_freq_seg0_idx, 1438 iconf->vht_oper_centr_freq_seg1_idx, 1439 iface->current_mode->vht_capab) == 0) 1440 params.freq = &freq; 1441 1442 res = hostapd_drv_set_ap(hapd, ¶ms); 1443 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 1444 if (res) 1445 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 1446 else 1447 ret = 0; 1448 fail: 1449 ieee802_11_free_ap_params(¶ms); 1450 return ret; 1451 } 1452 1453 1454 int ieee802_11_set_beacons(struct hostapd_iface *iface) 1455 { 1456 size_t i; 1457 int ret = 0; 1458 1459 for (i = 0; i < iface->num_bss; i++) { 1460 if (iface->bss[i]->started && 1461 ieee802_11_set_beacon(iface->bss[i]) < 0) 1462 ret = -1; 1463 } 1464 1465 return ret; 1466 } 1467 1468 1469 /* only update beacons if started */ 1470 int ieee802_11_update_beacons(struct hostapd_iface *iface) 1471 { 1472 size_t i; 1473 int ret = 0; 1474 1475 for (i = 0; i < iface->num_bss; i++) { 1476 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started && 1477 ieee802_11_set_beacon(iface->bss[i]) < 0) 1478 ret = -1; 1479 } 1480 1481 return ret; 1482 } 1483 1484 #endif /* CONFIG_NATIVE_WINDOWS */ 1485
