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) 2008-2009, Jouni Malinen <j (at) w1.fi> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * Alternatively, this software may be distributed under the terms of BSD 12 * license. 13 * 14 * See README and COPYING for more details. 15 */ 16 17 #include "utils/includes.h" 18 19 #ifndef CONFIG_NATIVE_WINDOWS 20 21 #include "utils/common.h" 22 #include "common/ieee802_11_defs.h" 23 #include "common/ieee802_11_common.h" 24 #include "drivers/driver.h" 25 #include "wps/wps_defs.h" 26 #include "p2p/p2p.h" 27 #include "hostapd.h" 28 #include "ieee802_11.h" 29 #include "wpa_auth.h" 30 #include "wmm.h" 31 #include "ap_config.h" 32 #include "sta_info.h" 33 #include "p2p_hostapd.h" 34 #include "ap_drv_ops.h" 35 #include "beacon.h" 36 37 38 #ifdef NEED_AP_MLME 39 40 static u8 ieee802_11_erp_info(struct hostapd_data *hapd) 41 { 42 u8 erp = 0; 43 44 if (hapd->iface->current_mode == NULL || 45 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 46 return 0; 47 48 if (hapd->iface->olbc) 49 erp |= ERP_INFO_USE_PROTECTION; 50 if (hapd->iface->num_sta_non_erp > 0) { 51 erp |= ERP_INFO_NON_ERP_PRESENT | 52 ERP_INFO_USE_PROTECTION; 53 } 54 if (hapd->iface->num_sta_no_short_preamble > 0 || 55 hapd->iconf->preamble == LONG_PREAMBLE) 56 erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 57 58 return erp; 59 } 60 61 62 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 63 { 64 *eid++ = WLAN_EID_DS_PARAMS; 65 *eid++ = 1; 66 *eid++ = hapd->iconf->channel; 67 return eid; 68 } 69 70 71 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 72 { 73 if (hapd->iface->current_mode == NULL || 74 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 75 return eid; 76 77 /* Set NonERP_present and use_protection bits if there 78 * are any associated NonERP stations. */ 79 /* TODO: use_protection bit can be set to zero even if 80 * there are NonERP stations present. This optimization 81 * might be useful if NonERP stations are "quiet". 82 * See 802.11g/D6 E-1 for recommended practice. 83 * In addition, Non ERP present might be set, if AP detects Non ERP 84 * operation on other APs. */ 85 86 /* Add ERP Information element */ 87 *eid++ = WLAN_EID_ERP_INFO; 88 *eid++ = 1; 89 *eid++ = ieee802_11_erp_info(hapd); 90 91 return eid; 92 } 93 94 95 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 96 struct hostapd_channel_data *start, 97 struct hostapd_channel_data *prev) 98 { 99 if (end - pos < 3) 100 return pos; 101 102 /* first channel number */ 103 *pos++ = start->chan; 104 /* number of channels */ 105 *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 106 /* maximum transmit power level */ 107 *pos++ = start->max_tx_power; 108 109 return pos; 110 } 111 112 113 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 114 int max_len) 115 { 116 u8 *pos = eid; 117 u8 *end = eid + max_len; 118 int i; 119 struct hostapd_hw_modes *mode; 120 struct hostapd_channel_data *start, *prev; 121 int chan_spacing = 1; 122 123 if (!hapd->iconf->ieee80211d || max_len < 6 || 124 hapd->iface->current_mode == NULL) 125 return eid; 126 127 *pos++ = WLAN_EID_COUNTRY; 128 pos++; /* length will be set later */ 129 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 130 pos += 3; 131 132 mode = hapd->iface->current_mode; 133 if (mode->mode == HOSTAPD_MODE_IEEE80211A) 134 chan_spacing = 4; 135 136 start = prev = NULL; 137 for (i = 0; i < mode->num_channels; i++) { 138 struct hostapd_channel_data *chan = &mode->channels[i]; 139 if (chan->flag & HOSTAPD_CHAN_DISABLED) 140 continue; 141 if (start && prev && 142 prev->chan + chan_spacing == chan->chan && 143 start->max_tx_power == chan->max_tx_power) { 144 prev = chan; 145 continue; /* can use same entry */ 146 } 147 148 if (start) { 149 pos = hostapd_eid_country_add(pos, end, chan_spacing, 150 start, prev); 151 start = NULL; 152 } 153 154 /* Start new group */ 155 start = prev = chan; 156 } 157 158 if (start) { 159 pos = hostapd_eid_country_add(pos, end, chan_spacing, 160 start, prev); 161 } 162 163 if ((pos - eid) & 1) { 164 if (end - pos < 1) 165 return eid; 166 *pos++ = 0; /* pad for 16-bit alignment */ 167 } 168 169 eid[1] = (pos - eid) - 2; 170 171 return pos; 172 } 173 174 175 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len) 176 { 177 const u8 *ie; 178 size_t ielen; 179 180 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 181 if (ie == NULL || ielen > len) 182 return eid; 183 184 os_memcpy(eid, ie, ielen); 185 return eid + ielen; 186 } 187 188 189 static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd, 190 struct sta_info *sta, 191 const struct ieee80211_mgmt *req, 192 int is_p2p, size_t *resp_len) 193 { 194 struct ieee80211_mgmt *resp; 195 u8 *pos, *epos; 196 size_t buflen; 197 198 #define MAX_PROBERESP_LEN 768 199 buflen = MAX_PROBERESP_LEN; 200 #ifdef CONFIG_WPS 201 if (hapd->wps_probe_resp_ie) 202 buflen += wpabuf_len(hapd->wps_probe_resp_ie); 203 #endif /* CONFIG_WPS */ 204 #ifdef CONFIG_P2P 205 if (hapd->p2p_probe_resp_ie) 206 buflen += wpabuf_len(hapd->p2p_probe_resp_ie); 207 #endif /* CONFIG_P2P */ 208 resp = os_zalloc(buflen); 209 if (resp == NULL) 210 return NULL; 211 212 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 213 214 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 215 WLAN_FC_STYPE_PROBE_RESP); 216 if (req) 217 os_memcpy(resp->da, req->sa, ETH_ALEN); 218 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 219 220 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 221 resp->u.probe_resp.beacon_int = 222 host_to_le16(hapd->iconf->beacon_int); 223 224 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 225 resp->u.probe_resp.capab_info = 226 host_to_le16(hostapd_own_capab_info(hapd, sta, 1)); 227 228 pos = resp->u.probe_resp.variable; 229 *pos++ = WLAN_EID_SSID; 230 *pos++ = hapd->conf->ssid.ssid_len; 231 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 232 pos += hapd->conf->ssid.ssid_len; 233 234 /* Supported rates */ 235 pos = hostapd_eid_supp_rates(hapd, pos); 236 237 /* DS Params */ 238 pos = hostapd_eid_ds_params(hapd, pos); 239 240 pos = hostapd_eid_country(hapd, pos, epos - pos); 241 242 /* ERP Information element */ 243 pos = hostapd_eid_erp_info(hapd, pos); 244 245 /* Extended supported rates */ 246 pos = hostapd_eid_ext_supp_rates(hapd, pos); 247 248 /* RSN, MDIE, WPA */ 249 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 250 251 #ifdef CONFIG_IEEE80211N 252 pos = hostapd_eid_ht_capabilities(hapd, pos); 253 pos = hostapd_eid_ht_operation(hapd, pos); 254 #endif /* CONFIG_IEEE80211N */ 255 256 pos = hostapd_eid_ext_capab(hapd, pos); 257 258 pos = hostapd_eid_time_adv(hapd, pos); 259 pos = hostapd_eid_time_zone(hapd, pos); 260 261 pos = hostapd_eid_interworking(hapd, pos); 262 pos = hostapd_eid_adv_proto(hapd, pos); 263 pos = hostapd_eid_roaming_consortium(hapd, pos); 264 265 /* Wi-Fi Alliance WMM */ 266 pos = hostapd_eid_wmm(hapd, pos); 267 268 #ifdef CONFIG_WPS 269 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 270 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 271 wpabuf_len(hapd->wps_probe_resp_ie)); 272 pos += wpabuf_len(hapd->wps_probe_resp_ie); 273 } 274 #endif /* CONFIG_WPS */ 275 276 #ifdef CONFIG_P2P 277 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 278 hapd->p2p_probe_resp_ie) { 279 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 280 wpabuf_len(hapd->p2p_probe_resp_ie)); 281 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 282 } 283 #endif /* CONFIG_P2P */ 284 #ifdef CONFIG_P2P_MANAGER 285 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 286 P2P_MANAGE) 287 pos = hostapd_eid_p2p_manage(hapd, pos); 288 #endif /* CONFIG_P2P_MANAGER */ 289 290 *resp_len = pos - (u8 *) resp; 291 return (u8 *) resp; 292 } 293 294 295 void handle_probe_req(struct hostapd_data *hapd, 296 const struct ieee80211_mgmt *mgmt, size_t len) 297 { 298 u8 *resp; 299 struct ieee802_11_elems elems; 300 const u8 *ie; 301 size_t ie_len; 302 struct sta_info *sta = NULL; 303 size_t i, resp_len; 304 int noack; 305 306 ie = mgmt->u.probe_req.variable; 307 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)) 308 return; 309 ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)); 310 311 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 312 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 313 mgmt->sa, mgmt->da, mgmt->bssid, 314 ie, ie_len) > 0) 315 return; 316 317 if (!hapd->iconf->send_probe_response) 318 return; 319 320 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 321 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 322 MAC2STR(mgmt->sa)); 323 return; 324 } 325 326 if ((!elems.ssid || !elems.supp_rates)) { 327 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 328 "without SSID or supported rates element", 329 MAC2STR(mgmt->sa)); 330 return; 331 } 332 333 #ifdef CONFIG_P2P 334 if (hapd->p2p && elems.wps_ie) { 335 struct wpabuf *wps; 336 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 337 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 338 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 339 "due to mismatch with Requested Device " 340 "Type"); 341 wpabuf_free(wps); 342 return; 343 } 344 wpabuf_free(wps); 345 } 346 347 if (hapd->p2p && elems.p2p) { 348 struct wpabuf *p2p; 349 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 350 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 351 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 352 "due to mismatch with Device ID"); 353 wpabuf_free(p2p); 354 return; 355 } 356 wpabuf_free(p2p); 357 } 358 #endif /* CONFIG_P2P */ 359 360 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) { 361 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 362 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 363 return; 364 } 365 366 sta = ap_get_sta(hapd, mgmt->sa); 367 368 #ifdef CONFIG_P2P 369 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 370 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 371 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 372 P2P_WILDCARD_SSID_LEN) == 0) { 373 /* Process P2P Wildcard SSID like Wildcard SSID */ 374 elems.ssid_len = 0; 375 } 376 #endif /* CONFIG_P2P */ 377 378 if (elems.ssid_len == 0 || 379 (elems.ssid_len == hapd->conf->ssid.ssid_len && 380 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) == 381 0)) { 382 if (sta) 383 sta->ssid_probe = &hapd->conf->ssid; 384 } else { 385 if (!(mgmt->da[0] & 0x01)) { 386 char ssid_txt[33]; 387 ieee802_11_print_ssid(ssid_txt, elems.ssid, 388 elems.ssid_len); 389 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 390 " for foreign SSID '%s' (DA " MACSTR ")", 391 MAC2STR(mgmt->sa), ssid_txt, 392 MAC2STR(mgmt->da)); 393 } 394 return; 395 } 396 397 #ifdef CONFIG_INTERWORKING 398 if (elems.interworking && elems.interworking_len >= 1) { 399 u8 ant = elems.interworking[0] & 0x0f; 400 if (ant != INTERWORKING_ANT_WILDCARD && 401 ant != hapd->conf->access_network_type) { 402 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 403 " for mismatching ANT %u ignored", 404 MAC2STR(mgmt->sa), ant); 405 return; 406 } 407 } 408 409 if (elems.interworking && 410 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 411 const u8 *hessid; 412 if (elems.interworking_len == 7) 413 hessid = elems.interworking + 1; 414 else 415 hessid = elems.interworking + 1 + 2; 416 if (!is_broadcast_ether_addr(hessid) && 417 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 418 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 419 " for mismatching HESSID " MACSTR 420 " ignored", 421 MAC2STR(mgmt->sa), MAC2STR(hessid)); 422 return; 423 } 424 } 425 #endif /* CONFIG_INTERWORKING */ 426 427 /* TODO: verify that supp_rates contains at least one matching rate 428 * with AP configuration */ 429 430 resp = hostapd_gen_probe_resp(hapd, sta, mgmt, elems.p2p != NULL, 431 &resp_len); 432 if (resp == NULL) 433 return; 434 435 /* 436 * If this is a broadcast probe request, apply no ack policy to avoid 437 * excessive retries. 438 */ 439 noack = !!(elems.ssid_len == 0 && is_broadcast_ether_addr(mgmt->da)); 440 441 if (hostapd_drv_send_mlme(hapd, resp, resp_len, noack) < 0) 442 perror("handle_probe_req: send"); 443 444 os_free(resp); 445 446 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 447 "SSID", MAC2STR(mgmt->sa), 448 elems.ssid_len == 0 ? "broadcast" : "our"); 449 } 450 451 452 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 453 size_t *resp_len) 454 { 455 /* check probe response offloading caps and print warnings */ 456 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 457 return NULL; 458 459 #ifdef CONFIG_WPS 460 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 461 (!(hapd->iface->probe_resp_offloads & 462 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 463 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 464 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 465 "Probe Response while not supporting this"); 466 #endif /* CONFIG_WPS */ 467 468 #ifdef CONFIG_P2P 469 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 470 !(hapd->iface->probe_resp_offloads & 471 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 472 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 473 "Probe Response while not supporting this"); 474 #endif /* CONFIG_P2P */ 475 476 if (hapd->conf->interworking && 477 !(hapd->iface->probe_resp_offloads & 478 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 479 wpa_printf(MSG_WARNING, "Device is trying to offload " 480 "Interworking Probe Response while not supporting " 481 "this"); 482 483 /* Generate a Probe Response template for the non-P2P case */ 484 return hostapd_gen_probe_resp(hapd, NULL, NULL, 0, resp_len); 485 } 486 487 #endif /* NEED_AP_MLME */ 488 489 490 void ieee802_11_set_beacon(struct hostapd_data *hapd) 491 { 492 struct ieee80211_mgmt *head = NULL; 493 u8 *tail = NULL; 494 size_t head_len = 0, tail_len = 0; 495 u8 *resp = NULL; 496 size_t resp_len = 0; 497 struct wpa_driver_ap_params params; 498 struct wpabuf *beacon, *proberesp, *assocresp; 499 #ifdef NEED_AP_MLME 500 u16 capab_info; 501 u8 *pos, *tailpos; 502 #endif /* NEED_AP_MLME */ 503 504 hapd->beacon_set_done = 1; 505 506 #ifdef NEED_AP_MLME 507 508 #define BEACON_HEAD_BUF_SIZE 256 509 #define BEACON_TAIL_BUF_SIZE 512 510 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 511 tail_len = BEACON_TAIL_BUF_SIZE; 512 #ifdef CONFIG_WPS 513 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 514 tail_len += wpabuf_len(hapd->wps_beacon_ie); 515 #endif /* CONFIG_WPS */ 516 #ifdef CONFIG_P2P 517 if (hapd->p2p_beacon_ie) 518 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 519 #endif /* CONFIG_P2P */ 520 tailpos = tail = os_malloc(tail_len); 521 if (head == NULL || tail == NULL) { 522 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 523 os_free(head); 524 os_free(tail); 525 return; 526 } 527 528 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 529 WLAN_FC_STYPE_BEACON); 530 head->duration = host_to_le16(0); 531 os_memset(head->da, 0xff, ETH_ALEN); 532 533 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 534 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 535 head->u.beacon.beacon_int = 536 host_to_le16(hapd->iconf->beacon_int); 537 538 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 539 capab_info = hostapd_own_capab_info(hapd, NULL, 0); 540 head->u.beacon.capab_info = host_to_le16(capab_info); 541 pos = &head->u.beacon.variable[0]; 542 543 /* SSID */ 544 *pos++ = WLAN_EID_SSID; 545 if (hapd->conf->ignore_broadcast_ssid == 2) { 546 /* clear the data, but keep the correct length of the SSID */ 547 *pos++ = hapd->conf->ssid.ssid_len; 548 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 549 pos += hapd->conf->ssid.ssid_len; 550 } else if (hapd->conf->ignore_broadcast_ssid) { 551 *pos++ = 0; /* empty SSID */ 552 } else { 553 *pos++ = hapd->conf->ssid.ssid_len; 554 os_memcpy(pos, hapd->conf->ssid.ssid, 555 hapd->conf->ssid.ssid_len); 556 pos += hapd->conf->ssid.ssid_len; 557 } 558 559 /* Supported rates */ 560 pos = hostapd_eid_supp_rates(hapd, pos); 561 562 /* DS Params */ 563 pos = hostapd_eid_ds_params(hapd, pos); 564 565 head_len = pos - (u8 *) head; 566 567 tailpos = hostapd_eid_country(hapd, tailpos, 568 tail + BEACON_TAIL_BUF_SIZE - tailpos); 569 570 /* ERP Information element */ 571 tailpos = hostapd_eid_erp_info(hapd, tailpos); 572 573 /* Extended supported rates */ 574 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 575 576 /* RSN, MDIE, WPA */ 577 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE - 578 tailpos); 579 580 #ifdef CONFIG_IEEE80211N 581 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 582 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 583 #endif /* CONFIG_IEEE80211N */ 584 585 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 586 587 /* 588 * TODO: Time Advertisement element should only be included in some 589 * DTIM Beacon frames. 590 */ 591 tailpos = hostapd_eid_time_adv(hapd, tailpos); 592 593 tailpos = hostapd_eid_interworking(hapd, tailpos); 594 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 595 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 596 597 /* Wi-Fi Alliance WMM */ 598 tailpos = hostapd_eid_wmm(hapd, tailpos); 599 600 #ifdef CONFIG_WPS 601 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 602 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 603 wpabuf_len(hapd->wps_beacon_ie)); 604 tailpos += wpabuf_len(hapd->wps_beacon_ie); 605 } 606 #endif /* CONFIG_WPS */ 607 608 #ifdef CONFIG_P2P 609 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 610 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 611 wpabuf_len(hapd->p2p_beacon_ie)); 612 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 613 } 614 #endif /* CONFIG_P2P */ 615 #ifdef CONFIG_P2P_MANAGER 616 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 617 P2P_MANAGE) 618 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 619 #endif /* CONFIG_P2P_MANAGER */ 620 621 tail_len = tailpos > tail ? tailpos - tail : 0; 622 623 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 624 #endif /* NEED_AP_MLME */ 625 626 os_memset(¶ms, 0, sizeof(params)); 627 params.head = (u8 *) head; 628 params.head_len = head_len; 629 params.tail = tail; 630 params.tail_len = tail_len; 631 params.proberesp = resp; 632 params.proberesp_len = resp_len; 633 params.dtim_period = hapd->conf->dtim_period; 634 params.beacon_int = hapd->iconf->beacon_int; 635 params.basic_rates = hapd->iconf->basic_rates; 636 params.ssid = (u8 *) hapd->conf->ssid.ssid; 637 params.ssid_len = hapd->conf->ssid.ssid_len; 638 params.pairwise_ciphers = hapd->conf->rsn_pairwise ? 639 hapd->conf->rsn_pairwise : hapd->conf->wpa_pairwise; 640 params.group_cipher = hapd->conf->wpa_group; 641 params.key_mgmt_suites = hapd->conf->wpa_key_mgmt; 642 params.auth_algs = hapd->conf->auth_algs; 643 params.wpa_version = hapd->conf->wpa; 644 params.privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 645 (hapd->conf->ieee802_1x && 646 (hapd->conf->default_wep_key_len || 647 hapd->conf->individual_wep_key_len)); 648 switch (hapd->conf->ignore_broadcast_ssid) { 649 case 0: 650 params.hide_ssid = NO_SSID_HIDING; 651 break; 652 case 1: 653 params.hide_ssid = HIDDEN_SSID_ZERO_LEN; 654 break; 655 case 2: 656 params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 657 break; 658 } 659 hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp); 660 params.beacon_ies = beacon; 661 params.proberesp_ies = proberesp; 662 params.assocresp_ies = assocresp; 663 params.isolate = hapd->conf->isolate; 664 #ifdef NEED_AP_MLME 665 params.cts_protect = !!(ieee802_11_erp_info(hapd) & 666 ERP_INFO_USE_PROTECTION); 667 params.preamble = hapd->iface->num_sta_no_short_preamble == 0 && 668 hapd->iconf->preamble == SHORT_PREAMBLE; 669 if (hapd->iface->current_mode && 670 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 671 params.short_slot_time = 672 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 673 else 674 params.short_slot_time = -1; 675 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 676 params.ht_opmode = -1; 677 else 678 params.ht_opmode = hapd->iface->ht_op_mode; 679 #endif /* NEED_AP_MLME */ 680 params.interworking = hapd->conf->interworking; 681 if (hapd->conf->interworking && 682 !is_zero_ether_addr(hapd->conf->hessid)) 683 params.hessid = hapd->conf->hessid; 684 params.access_network_type = hapd->conf->access_network_type; 685 if (hostapd_drv_set_ap(hapd, ¶ms)) 686 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 687 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 688 689 os_free(tail); 690 os_free(head); 691 os_free(resp); 692 } 693 694 695 void ieee802_11_set_beacons(struct hostapd_iface *iface) 696 { 697 size_t i; 698 for (i = 0; i < iface->num_bss; i++) 699 ieee802_11_set_beacon(iface->bss[i]); 700 } 701 702 #endif /* CONFIG_NATIVE_WINDOWS */ 703
