src/ap/beacon.c

   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@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 static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
  39 {
  40         u8 erp = 0;
  41
  42         if (hapd->iface->current_mode == NULL ||
  43             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
  44                 return 0;
  45
  46         switch (hapd->iconf->cts_protection_type) {
  47         case CTS_PROTECTION_FORCE_ENABLED:
  48                 erp |= ERP_INFO_NON_ERP_PRESENT | ERP_INFO_USE_PROTECTION;
  49                 break;
  50         case CTS_PROTECTION_FORCE_DISABLED:
  51                 erp = 0;
  52                 break;
  53         case CTS_PROTECTION_AUTOMATIC:
  54                 if (hapd->iface->olbc)
  55                         erp |= ERP_INFO_USE_PROTECTION;
  56                 /* continue */
  57         case CTS_PROTECTION_AUTOMATIC_NO_OLBC:
  58                 if (hapd->iface->num_sta_non_erp > 0) {
  59                         erp |= ERP_INFO_NON_ERP_PRESENT |
  60                                 ERP_INFO_USE_PROTECTION;
  61                 }
  62                 break;
  63         }
  64         if (hapd->iface->num_sta_no_short_preamble > 0 ||
  65             hapd->iconf->preamble == LONG_PREAMBLE)
  66                 erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
  67
  68         return erp;
  69 }
  70
  71
  72 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
  73 {
  74         *eid++ = WLAN_EID_DS_PARAMS;
  75         *eid++ = 1;
  76         *eid++ = hapd->iconf->channel;
  77         return eid;
  78 }
  79
  80
  81 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
  82 {
  83         if (hapd->iface->current_mode == NULL ||
  84             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
  85                 return eid;
  86
  87         /* Set NonERP_present and use_protection bits if there
  88          * are any associated NonERP stations. */
  89         /* TODO: use_protection bit can be set to zero even if
  90          * there are NonERP stations present. This optimization
  91          * might be useful if NonERP stations are "quiet".
  92          * See 802.11g/D6 E-1 for recommended practice.
  93          * In addition, Non ERP present might be set, if AP detects Non ERP
  94          * operation on other APs. */
  95
  96         /* Add ERP Information element */
  97         *eid++ = WLAN_EID_ERP_INFO;
  98         *eid++ = 1;
  99         *eid++ = ieee802_11_erp_info(hapd);
 100
 101         return eid;
 102 }
 103
 104
 105 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing,
 106                                     struct hostapd_channel_data *start,
 107                                     struct hostapd_channel_data *prev)
 108 {
 109         if (end - pos < 3)
 110                 return pos;
 111
 112         /* first channel number */
 113         *pos++ = start->chan;
 114         /* number of channels */
 115         *pos++ = (prev->chan - start->chan) / chan_spacing + 1;
 116         /* maximum transmit power level */
 117         *pos++ = start->max_tx_power;
 118
 119         return pos;
 120 }
 121
 122
 123 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
 124                                 int max_len)
 125 {
 126         u8 *pos = eid;
 127         u8 *end = eid + max_len;
 128         int i;
 129         struct hostapd_hw_modes *mode;
 130         struct hostapd_channel_data *start, *prev;
 131         int chan_spacing = 1;
 132
 133         if (!hapd->iconf->ieee80211d || max_len < 6 ||
 134             hapd->iface->current_mode == NULL)
 135                 return eid;
 136
 137         *pos++ = WLAN_EID_COUNTRY;
 138         pos++; /* length will be set later */
 139         os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
 140         pos += 3;
 141
 142         mode = hapd->iface->current_mode;
 143         if (mode->mode == HOSTAPD_MODE_IEEE80211A)
 144                 chan_spacing = 4;
 145
 146         start = prev = NULL;
 147         for (i = 0; i < mode->num_channels; i++) {
 148                 struct hostapd_channel_data *chan = &mode->channels[i];
 149                 if (chan->flag & HOSTAPD_CHAN_DISABLED)
 150                         continue;
 151                 if (start && prev &&
 152                     prev->chan + chan_spacing == chan->chan &&
 153                     start->max_tx_power == chan->max_tx_power) {
 154                         prev = chan;
 155                         continue; /* can use same entry */
 156                 }
 157
 158                 if (start) {
 159                         pos = hostapd_eid_country_add(pos, end, chan_spacing,
 160                                                       start, prev);
 161                         start = NULL;
 162                 }
 163
 164                 /* Start new group */
 165                 start = prev = chan;
 166         }
 167
 168         if (start) {
 169                 pos = hostapd_eid_country_add(pos, end, chan_spacing,
 170                                               start, prev);
 171         }
 172
 173         if ((pos - eid) & 1) {
 174                 if (end - pos < 1)
 175                         return eid;
 176                 *pos++ = 0; /* pad for 16-bit alignment */
 177         }
 178
 179         eid[1] = (pos - eid) - 2;
 180
 181         return pos;
 182 }
 183
 184
 185 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len,
 186                             struct sta_info *sta)
 187 {
 188         const u8 *ie;
 189         size_t ielen;
 190
 191         ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
 192         if (ie == NULL || ielen > len)
 193                 return eid;
 194
 195         os_memcpy(eid, ie, ielen);
 196         return eid + ielen;
 197 }
 198
 199
 200 static u8 * hostapd_eid_interworking(struct hostapd_data *hapd, u8 *eid)
 201 {
 202         u8 *pos = eid;
 203 #ifdef CONFIG_INTERWORKING
 204         u8 *len;
 205
 206         if (!hapd->conf->interworking)
 207                 return eid;
 208
 209         *pos++ = WLAN_EID_INTERWORKING;
 210         len = pos++;
 211
 212         *pos = hapd->conf->access_network_type;
 213         if (hapd->conf->internet)
 214                 *pos |= INTERWORKING_ANO_INTERNET;
 215         if (hapd->conf->asra)
 216                 *pos |= INTERWORKING_ANO_ASRA;
 217         if (hapd->conf->esr)
 218                 *pos |= INTERWORKING_ANO_ESR;
 219         if (hapd->conf->uesa)
 220                 *pos |= INTERWORKING_ANO_UESA;
 221         pos++;
 222
 223         if (hapd->conf->venue_info_set) {
 224                 *pos++ = hapd->conf->venue_group;
 225                 *pos++ = hapd->conf->venue_type;
 226         }
 227
 228         if (!is_zero_ether_addr(hapd->conf->hessid)) {
 229                 os_memcpy(pos, hapd->conf->hessid, ETH_ALEN);
 230                 pos += ETH_ALEN;
 231         }
 232
 233         *len = pos - len - 1;
 234 #endif /* CONFIG_INTERWORKING */
 235
 236         return pos;
 237 }
 238
 239
 240 void handle_probe_req(struct hostapd_data *hapd,
 241                       const struct ieee80211_mgmt *mgmt, size_t len)
 242 {
 243         struct ieee80211_mgmt *resp;
 244         struct ieee802_11_elems elems;
 245         char *ssid;
 246         u8 *pos, *epos;
 247         const u8 *ie;
 248         size_t ssid_len, ie_len;
 249         struct sta_info *sta = NULL;
 250         size_t buflen;
 251         size_t i;
 252
 253         ie = mgmt->u.probe_req.variable;
 254         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 255                 return;
 256         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 257
 258         for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
 259                 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
 260                                             mgmt->sa, mgmt->da, mgmt->bssid,
 261                                             ie, ie_len) > 0)
 262                         return;
 263
 264         if (!hapd->iconf->send_probe_response)
 265                 return;
 266
 267         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
 268                 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
 269                            MAC2STR(mgmt->sa));
 270                 return;
 271         }
 272
 273         ssid = NULL;
 274         ssid_len = 0;
 275
 276         if ((!elems.ssid || !elems.supp_rates)) {
 277                 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
 278                            "without SSID or supported rates element",
 279                            MAC2STR(mgmt->sa));
 280                 return;
 281         }
 282
 283 #ifdef CONFIG_P2P
 284         if (hapd->p2p && elems.wps_ie) {
 285                 struct wpabuf *wps;
 286                 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 287                 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
 288                         wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
 289                                    "due to mismatch with Requested Device "
 290                                    "Type");
 291                         wpabuf_free(wps);
 292                         return;
 293                 }
 294                 wpabuf_free(wps);
 295         }
 296 #endif /* CONFIG_P2P */
 297
 298         if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) {
 299                 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
 300                            "broadcast SSID ignored", MAC2STR(mgmt->sa));
 301                 return;
 302         }
 303
 304         sta = ap_get_sta(hapd, mgmt->sa);
 305
 306 #ifdef CONFIG_P2P
 307         if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
 308             elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
 309             os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
 310                       P2P_WILDCARD_SSID_LEN) == 0) {
 311                 /* Process P2P Wildcard SSID like Wildcard SSID */
 312                 elems.ssid_len = 0;
 313         }
 314 #endif /* CONFIG_P2P */
 315
 316         if (elems.ssid_len == 0 ||
 317             (elems.ssid_len == hapd->conf->ssid.ssid_len &&
 318              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) ==
 319              0)) {
 320                 ssid = hapd->conf->ssid.ssid;
 321                 ssid_len = hapd->conf->ssid.ssid_len;
 322                 if (sta)
 323                         sta->ssid_probe = &hapd->conf->ssid;
 324         }
 325
 326         if (!ssid) {
 327                 if (!(mgmt->da[0] & 0x01)) {
 328                         char ssid_txt[33];
 329                         ieee802_11_print_ssid(ssid_txt, elems.ssid,
 330                                               elems.ssid_len);
 331                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 332                                    " for foreign SSID '%s' (DA " MACSTR ")",
 333                                    MAC2STR(mgmt->sa), ssid_txt,
 334                                    MAC2STR(mgmt->da));
 335                 }
 336                 return;
 337         }
 338
 339         /* TODO: verify that supp_rates contains at least one matching rate
 340          * with AP configuration */
 341 #define MAX_PROBERESP_LEN 768
 342         buflen = MAX_PROBERESP_LEN;
 343 #ifdef CONFIG_WPS
 344         if (hapd->wps_probe_resp_ie)
 345                 buflen += wpabuf_len(hapd->wps_probe_resp_ie);
 346 #endif /* CONFIG_WPS */
 347 #ifdef CONFIG_P2P
 348         if (hapd->p2p_probe_resp_ie)
 349                 buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
 350 #endif /* CONFIG_P2P */
 351         resp = os_zalloc(buflen);
 352         if (resp == NULL)
 353                 return;
 354         epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
 355
 356         resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 357                                            WLAN_FC_STYPE_PROBE_RESP);
 358         os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
 359         os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
 360
 361         os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
 362         resp->u.probe_resp.beacon_int =
 363                 host_to_le16(hapd->iconf->beacon_int);
 364
 365         /* hardware or low-level driver will setup seq_ctrl and timestamp */
 366         resp->u.probe_resp.capab_info =
 367                 host_to_le16(hostapd_own_capab_info(hapd, sta, 1));
 368
 369         pos = resp->u.probe_resp.variable;
 370         *pos++ = WLAN_EID_SSID;
 371         *pos++ = ssid_len;
 372         os_memcpy(pos, ssid, ssid_len);
 373         pos += ssid_len;
 374
 375         /* Supported rates */
 376         pos = hostapd_eid_supp_rates(hapd, pos);
 377
 378         /* DS Params */
 379         pos = hostapd_eid_ds_params(hapd, pos);
 380
 381         pos = hostapd_eid_country(hapd, pos, epos - pos);
 382
 383         /* ERP Information element */
 384         pos = hostapd_eid_erp_info(hapd, pos);
 385
 386         /* Extended supported rates */
 387         pos = hostapd_eid_ext_supp_rates(hapd, pos);
 388
 389         /* RSN, MDIE, WPA */
 390         pos = hostapd_eid_wpa(hapd, pos, epos - pos, sta);
 391
 392 #ifdef CONFIG_IEEE80211N
 393         pos = hostapd_eid_ht_capabilities(hapd, pos);
 394         pos = hostapd_eid_ht_operation(hapd, pos);
 395 #endif /* CONFIG_IEEE80211N */
 396
 397         pos = hostapd_eid_ext_capab(hapd, pos);
 398
 399         pos = hostapd_eid_interworking(hapd, pos);
 400
 401         /* Wi-Fi Alliance WMM */
 402         pos = hostapd_eid_wmm(hapd, pos);
 403
 404 #ifdef CONFIG_WPS
 405         if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
 406                 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
 407                           wpabuf_len(hapd->wps_probe_resp_ie));
 408                 pos += wpabuf_len(hapd->wps_probe_resp_ie);
 409         }
 410 #endif /* CONFIG_WPS */
 411
 412 #ifdef CONFIG_P2P
 413         if ((hapd->conf->p2p & P2P_ENABLED) && elems.p2p &&
 414             hapd->p2p_probe_resp_ie) {
 415                 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
 416                           wpabuf_len(hapd->p2p_probe_resp_ie));
 417                 pos += wpabuf_len(hapd->p2p_probe_resp_ie);
 418         }
 419 #endif /* CONFIG_P2P */
 420 #ifdef CONFIG_P2P_MANAGER
 421         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
 422             P2P_MANAGE)
 423                 pos = hostapd_eid_p2p_manage(hapd, pos);
 424 #endif /* CONFIG_P2P_MANAGER */
 425
 426         if (hostapd_drv_send_mlme(hapd, resp, pos - (u8 *) resp) < 0)
 427                 perror("handle_probe_req: send");
 428
 429         os_free(resp);
 430
 431         wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
 432                    "SSID", MAC2STR(mgmt->sa),
 433                    elems.ssid_len == 0 ? "broadcast" : "our");
 434 }
 435
 436
 437 void ieee802_11_set_beacon(struct hostapd_data *hapd)
 438 {
 439         struct ieee80211_mgmt *head;
 440         u8 *pos, *tail, *tailpos;
 441         u16 capab_info;
 442         size_t head_len, tail_len;
 443         struct wpa_driver_ap_params params;
 444         struct wpabuf *beacon, *proberesp, *assocresp;
 445
 446 #ifdef CONFIG_P2P
 447         if ((hapd->conf->p2p & (P2P_ENABLED | P2P_GROUP_OWNER)) == P2P_ENABLED)
 448                 goto no_beacon;
 449 #endif /* CONFIG_P2P */
 450         hapd->beacon_set_done = 1;
 451
 452 #define BEACON_HEAD_BUF_SIZE 256
 453 #define BEACON_TAIL_BUF_SIZE 512
 454         head = os_zalloc(BEACON_HEAD_BUF_SIZE);
 455         tail_len = BEACON_TAIL_BUF_SIZE;
 456 #ifdef CONFIG_WPS
 457         if (hapd->conf->wps_state && hapd->wps_beacon_ie)
 458                 tail_len += wpabuf_len(hapd->wps_beacon_ie);
 459 #endif /* CONFIG_WPS */
 460 #ifdef CONFIG_P2P
 461         if (hapd->p2p_beacon_ie)
 462                 tail_len += wpabuf_len(hapd->p2p_beacon_ie);
 463 #endif /* CONFIG_P2P */
 464         tailpos = tail = os_malloc(tail_len);
 465         if (head == NULL || tail == NULL) {
 466                 wpa_printf(MSG_ERROR, "Failed to set beacon data");
 467                 os_free(head);
 468                 os_free(tail);
 469                 return;
 470         }
 471
 472         head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 473                                            WLAN_FC_STYPE_BEACON);
 474         head->duration = host_to_le16(0);
 475         os_memset(head->da, 0xff, ETH_ALEN);
 476
 477         os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
 478         os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
 479         head->u.beacon.beacon_int =
 480                 host_to_le16(hapd->iconf->beacon_int);
 481
 482         /* hardware or low-level driver will setup seq_ctrl and timestamp */
 483         capab_info = hostapd_own_capab_info(hapd, NULL, 0);
 484         head->u.beacon.capab_info = host_to_le16(capab_info);
 485         pos = &head->u.beacon.variable[0];
 486
 487         /* SSID */
 488         *pos++ = WLAN_EID_SSID;
 489         if (hapd->conf->ignore_broadcast_ssid == 2) {
 490                 /* clear the data, but keep the correct length of the SSID */
 491                 *pos++ = hapd->conf->ssid.ssid_len;
 492                 os_memset(pos, 0, hapd->conf->ssid.ssid_len);
 493                 pos += hapd->conf->ssid.ssid_len;
 494         } else if (hapd->conf->ignore_broadcast_ssid) {
 495                 *pos++ = 0; /* empty SSID */
 496         } else {
 497                 *pos++ = hapd->conf->ssid.ssid_len;
 498                 os_memcpy(pos, hapd->conf->ssid.ssid,
 499                           hapd->conf->ssid.ssid_len);
 500                 pos += hapd->conf->ssid.ssid_len;
 501         }
 502
 503         /* Supported rates */
 504         pos = hostapd_eid_supp_rates(hapd, pos);
 505
 506         /* DS Params */
 507         pos = hostapd_eid_ds_params(hapd, pos);
 508
 509         head_len = pos - (u8 *) head;
 510
 511         tailpos = hostapd_eid_country(hapd, tailpos,
 512                                       tail + BEACON_TAIL_BUF_SIZE - tailpos);
 513
 514         /* ERP Information element */
 515         tailpos = hostapd_eid_erp_info(hapd, tailpos);
 516
 517         /* Extended supported rates */
 518         tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
 519
 520         /* RSN, MDIE, WPA */
 521         tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
 522                                   tailpos, NULL);
 523
 524 #ifdef CONFIG_IEEE80211N
 525         tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
 526         tailpos = hostapd_eid_ht_operation(hapd, tailpos);
 527 #endif /* CONFIG_IEEE80211N */
 528
 529         tailpos = hostapd_eid_ext_capab(hapd, tailpos);
 530
 531         tailpos = hostapd_eid_interworking(hapd, tailpos);
 532
 533         /* Wi-Fi Alliance WMM */
 534         tailpos = hostapd_eid_wmm(hapd, tailpos);
 535
 536 #ifdef CONFIG_WPS
 537         if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
 538                 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
 539                           wpabuf_len(hapd->wps_beacon_ie));
 540                 tailpos += wpabuf_len(hapd->wps_beacon_ie);
 541         }
 542 #endif /* CONFIG_WPS */
 543
 544 #ifdef CONFIG_P2P
 545         if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
 546                 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
 547                           wpabuf_len(hapd->p2p_beacon_ie));
 548                 tailpos += wpabuf_len(hapd->p2p_beacon_ie);
 549         }
 550 #endif /* CONFIG_P2P */
 551 #ifdef CONFIG_P2P_MANAGER
 552         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
 553             P2P_MANAGE)
 554                 tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
 555 #endif /* CONFIG_P2P_MANAGER */
 556
 557         tail_len = tailpos > tail ? tailpos - tail : 0;
 558
 559         os_memset(&params, 0, sizeof(params));
 560         params.head = (u8 *) head;
 561         params.head_len = head_len;
 562         params.tail = tail;
 563         params.tail_len = tail_len;
 564         params.dtim_period = hapd->conf->dtim_period;
 565         params.beacon_int = hapd->iconf->beacon_int;
 566         params.ssid = (u8 *) hapd->conf->ssid.ssid;
 567         params.ssid_len = hapd->conf->ssid.ssid_len;
 568         params.pairwise_ciphers = hapd->conf->rsn_pairwise ?
 569                 hapd->conf->rsn_pairwise : hapd->conf->wpa_pairwise;
 570         params.group_cipher = hapd->conf->wpa_group;
 571         params.key_mgmt_suites = hapd->conf->wpa_key_mgmt;
 572         params.auth_algs = hapd->conf->auth_algs;
 573         params.wpa_version = hapd->conf->wpa;
 574         params.privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
 575                 (hapd->conf->ieee802_1x &&
 576                  (hapd->conf->default_wep_key_len ||
 577                   hapd->conf->individual_wep_key_len));
 578         switch (hapd->conf->ignore_broadcast_ssid) {
 579         case 0:
 580                 params.hide_ssid = NO_SSID_HIDING;
 581                 break;
 582         case 1:
 583                 params.hide_ssid = HIDDEN_SSID_ZERO_LEN;
 584                 break;
 585         case 2:
 586                 params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
 587                 break;
 588         }
 589         hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp);
 590         params.beacon_ies = beacon;
 591         params.proberesp_ies = proberesp;
 592         params.assocresp_ies = assocresp;
 593         if (hostapd_drv_set_ap(hapd, &params))
 594                 wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
 595         hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
 596
 597         os_free(tail);
 598         os_free(head);
 599
 600 #ifdef CONFIG_P2P
 601 no_beacon:
 602 #endif /* CONFIG_P2P */
 603         hostapd_set_bss_params(hapd, !!(ieee802_11_erp_info(hapd) &
 604                                         ERP_INFO_USE_PROTECTION));
 605 }
 606
 607
 608 void ieee802_11_set_beacons(struct hostapd_iface *iface)
 609 {
 610         size_t i;
 611         for (i = 0; i < iface->num_bss; i++)
 612                 ieee802_11_set_beacon(iface->bss[i]);
 613 }
 614
 615 #endif /* CONFIG_NATIVE_WINDOWS */