1214501Srpaulo/* 2214501Srpaulo * hostapd / IEEE 802.11 Management: Beacon and Probe Request/Response 3214501Srpaulo * Copyright (c) 2002-2004, Instant802 Networks, Inc. 4214501Srpaulo * Copyright (c) 2005-2006, Devicescape Software, Inc. 5214501Srpaulo * Copyright (c) 2008-2009, Jouni Malinen <j@w1.fi> 6214501Srpaulo * 7214501Srpaulo * This program is free software; you can redistribute it and/or modify 8214501Srpaulo * it under the terms of the GNU General Public License version 2 as 9214501Srpaulo * published by the Free Software Foundation. 10214501Srpaulo * 11214501Srpaulo * Alternatively, this software may be distributed under the terms of BSD 12214501Srpaulo * license. 13214501Srpaulo * 14214501Srpaulo * See README and COPYING for more details. 15214501Srpaulo */ 16214501Srpaulo 17214501Srpaulo#include "utils/includes.h" 18214501Srpaulo 19214501Srpaulo#ifndef CONFIG_NATIVE_WINDOWS 20214501Srpaulo 21214501Srpaulo#include "utils/common.h" 22214501Srpaulo#include "common/ieee802_11_defs.h" 23214501Srpaulo#include "common/ieee802_11_common.h" 24214501Srpaulo#include "drivers/driver.h" 25214501Srpaulo#include "hostapd.h" 26214501Srpaulo#include "ieee802_11.h" 27214501Srpaulo#include "wpa_auth.h" 28214501Srpaulo#include "wmm.h" 29214501Srpaulo#include "ap_config.h" 30214501Srpaulo#include "sta_info.h" 31214501Srpaulo#include "beacon.h" 32214501Srpaulo 33214501Srpaulo 34214501Srpaulostatic u8 ieee802_11_erp_info(struct hostapd_data *hapd) 35214501Srpaulo{ 36214501Srpaulo u8 erp = 0; 37214501Srpaulo 38214501Srpaulo if (hapd->iface->current_mode == NULL || 39214501Srpaulo hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 40214501Srpaulo return 0; 41214501Srpaulo 42214501Srpaulo switch (hapd->iconf->cts_protection_type) { 43214501Srpaulo case CTS_PROTECTION_FORCE_ENABLED: 44214501Srpaulo erp |= ERP_INFO_NON_ERP_PRESENT | ERP_INFO_USE_PROTECTION; 45214501Srpaulo break; 46214501Srpaulo case CTS_PROTECTION_FORCE_DISABLED: 47214501Srpaulo erp = 0; 48214501Srpaulo break; 49214501Srpaulo case CTS_PROTECTION_AUTOMATIC: 50214501Srpaulo if (hapd->iface->olbc) 51214501Srpaulo erp |= ERP_INFO_USE_PROTECTION; 52214501Srpaulo /* continue */ 53214501Srpaulo case CTS_PROTECTION_AUTOMATIC_NO_OLBC: 54214501Srpaulo if (hapd->iface->num_sta_non_erp > 0) { 55214501Srpaulo erp |= ERP_INFO_NON_ERP_PRESENT | 56214501Srpaulo ERP_INFO_USE_PROTECTION; 57214501Srpaulo } 58214501Srpaulo break; 59214501Srpaulo } 60214501Srpaulo if (hapd->iface->num_sta_no_short_preamble > 0 || 61214501Srpaulo hapd->iconf->preamble == LONG_PREAMBLE) 62214501Srpaulo erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 63214501Srpaulo 64214501Srpaulo return erp; 65214501Srpaulo} 66214501Srpaulo 67214501Srpaulo 68214501Srpaulostatic u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 69214501Srpaulo{ 70214501Srpaulo *eid++ = WLAN_EID_DS_PARAMS; 71214501Srpaulo *eid++ = 1; 72214501Srpaulo *eid++ = hapd->iconf->channel; 73214501Srpaulo return eid; 74214501Srpaulo} 75214501Srpaulo 76214501Srpaulo 77214501Srpaulostatic u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 78214501Srpaulo{ 79214501Srpaulo if (hapd->iface->current_mode == NULL || 80214501Srpaulo hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 81214501Srpaulo return eid; 82214501Srpaulo 83214501Srpaulo /* Set NonERP_present and use_protection bits if there 84214501Srpaulo * are any associated NonERP stations. */ 85214501Srpaulo /* TODO: use_protection bit can be set to zero even if 86214501Srpaulo * there are NonERP stations present. This optimization 87214501Srpaulo * might be useful if NonERP stations are "quiet". 88214501Srpaulo * See 802.11g/D6 E-1 for recommended practice. 89214501Srpaulo * In addition, Non ERP present might be set, if AP detects Non ERP 90214501Srpaulo * operation on other APs. */ 91214501Srpaulo 92214501Srpaulo /* Add ERP Information element */ 93214501Srpaulo *eid++ = WLAN_EID_ERP_INFO; 94214501Srpaulo *eid++ = 1; 95214501Srpaulo *eid++ = ieee802_11_erp_info(hapd); 96214501Srpaulo 97214501Srpaulo return eid; 98214501Srpaulo} 99214501Srpaulo 100214501Srpaulo 101214501Srpaulostatic u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 102214501Srpaulo struct hostapd_channel_data *start, 103214501Srpaulo struct hostapd_channel_data *prev) 104214501Srpaulo{ 105214501Srpaulo if (end - pos < 3) 106214501Srpaulo return pos; 107214501Srpaulo 108214501Srpaulo /* first channel number */ 109214501Srpaulo *pos++ = start->chan; 110214501Srpaulo /* number of channels */ 111214501Srpaulo *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 112214501Srpaulo /* maximum transmit power level */ 113214501Srpaulo *pos++ = start->max_tx_power; 114214501Srpaulo 115214501Srpaulo return pos; 116214501Srpaulo} 117214501Srpaulo 118214501Srpaulo 119214501Srpaulostatic u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 120214501Srpaulo int max_len) 121214501Srpaulo{ 122214501Srpaulo u8 *pos = eid; 123214501Srpaulo u8 *end = eid + max_len; 124214501Srpaulo int i; 125214501Srpaulo struct hostapd_hw_modes *mode; 126214501Srpaulo struct hostapd_channel_data *start, *prev; 127214501Srpaulo int chan_spacing = 1; 128214501Srpaulo 129214501Srpaulo if (!hapd->iconf->ieee80211d || max_len < 6 || 130214501Srpaulo hapd->iface->current_mode == NULL) 131214501Srpaulo return eid; 132214501Srpaulo 133214501Srpaulo *pos++ = WLAN_EID_COUNTRY; 134214501Srpaulo pos++; /* length will be set later */ 135214501Srpaulo os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 136214501Srpaulo pos += 3; 137214501Srpaulo 138214501Srpaulo mode = hapd->iface->current_mode; 139214501Srpaulo if (mode->mode == HOSTAPD_MODE_IEEE80211A) 140214501Srpaulo chan_spacing = 4; 141214501Srpaulo 142214501Srpaulo start = prev = NULL; 143214501Srpaulo for (i = 0; i < mode->num_channels; i++) { 144214501Srpaulo struct hostapd_channel_data *chan = &mode->channels[i]; 145214501Srpaulo if (chan->flag & HOSTAPD_CHAN_DISABLED) 146214501Srpaulo continue; 147214501Srpaulo if (start && prev && 148214501Srpaulo prev->chan + chan_spacing == chan->chan && 149214501Srpaulo start->max_tx_power == chan->max_tx_power) { 150214501Srpaulo prev = chan; 151214501Srpaulo continue; /* can use same entry */ 152214501Srpaulo } 153214501Srpaulo 154214501Srpaulo if (start) { 155214501Srpaulo pos = hostapd_eid_country_add(pos, end, chan_spacing, 156214501Srpaulo start, prev); 157214501Srpaulo start = NULL; 158214501Srpaulo } 159214501Srpaulo 160214501Srpaulo /* Start new group */ 161214501Srpaulo start = prev = chan; 162214501Srpaulo } 163214501Srpaulo 164214501Srpaulo if (start) { 165214501Srpaulo pos = hostapd_eid_country_add(pos, end, chan_spacing, 166214501Srpaulo start, prev); 167214501Srpaulo } 168214501Srpaulo 169214501Srpaulo if ((pos - eid) & 1) { 170214501Srpaulo if (end - pos < 1) 171214501Srpaulo return eid; 172214501Srpaulo *pos++ = 0; /* pad for 16-bit alignment */ 173214501Srpaulo } 174214501Srpaulo 175214501Srpaulo eid[1] = (pos - eid) - 2; 176214501Srpaulo 177214501Srpaulo return pos; 178214501Srpaulo} 179214501Srpaulo 180214501Srpaulo 181214501Srpaulostatic u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len, 182214501Srpaulo struct sta_info *sta) 183214501Srpaulo{ 184214501Srpaulo const u8 *ie; 185214501Srpaulo size_t ielen; 186214501Srpaulo 187214501Srpaulo ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 188214501Srpaulo if (ie == NULL || ielen > len) 189214501Srpaulo return eid; 190214501Srpaulo 191214501Srpaulo os_memcpy(eid, ie, ielen); 192214501Srpaulo return eid + ielen; 193214501Srpaulo} 194214501Srpaulo 195214501Srpaulo 196214501Srpaulovoid handle_probe_req(struct hostapd_data *hapd, 197214501Srpaulo const struct ieee80211_mgmt *mgmt, size_t len) 198214501Srpaulo{ 199214501Srpaulo struct ieee80211_mgmt *resp; 200214501Srpaulo struct ieee802_11_elems elems; 201214501Srpaulo char *ssid; 202214501Srpaulo u8 *pos, *epos; 203214501Srpaulo const u8 *ie; 204214501Srpaulo size_t ssid_len, ie_len; 205214501Srpaulo struct sta_info *sta = NULL; 206214501Srpaulo size_t buflen; 207214501Srpaulo size_t i; 208214501Srpaulo 209214501Srpaulo ie = mgmt->u.probe_req.variable; 210214501Srpaulo ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)); 211214501Srpaulo 212214501Srpaulo for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 213214501Srpaulo if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 214214501Srpaulo mgmt->sa, ie, ie_len) > 0) 215214501Srpaulo return; 216214501Srpaulo 217214501Srpaulo if (!hapd->iconf->send_probe_response) 218214501Srpaulo return; 219214501Srpaulo 220214501Srpaulo if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 221214501Srpaulo wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 222214501Srpaulo MAC2STR(mgmt->sa)); 223214501Srpaulo return; 224214501Srpaulo } 225214501Srpaulo 226214501Srpaulo ssid = NULL; 227214501Srpaulo ssid_len = 0; 228214501Srpaulo 229214501Srpaulo if ((!elems.ssid || !elems.supp_rates)) { 230214501Srpaulo wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 231214501Srpaulo "without SSID or supported rates element", 232214501Srpaulo MAC2STR(mgmt->sa)); 233214501Srpaulo return; 234214501Srpaulo } 235214501Srpaulo 236214501Srpaulo if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) { 237214501Srpaulo wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 238214501Srpaulo "broadcast SSID ignored", MAC2STR(mgmt->sa)); 239214501Srpaulo return; 240214501Srpaulo } 241214501Srpaulo 242214501Srpaulo sta = ap_get_sta(hapd, mgmt->sa); 243214501Srpaulo 244214501Srpaulo if (elems.ssid_len == 0 || 245214501Srpaulo (elems.ssid_len == hapd->conf->ssid.ssid_len && 246214501Srpaulo os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) == 247214501Srpaulo 0)) { 248214501Srpaulo ssid = hapd->conf->ssid.ssid; 249214501Srpaulo ssid_len = hapd->conf->ssid.ssid_len; 250214501Srpaulo if (sta) 251214501Srpaulo sta->ssid_probe = &hapd->conf->ssid; 252214501Srpaulo } 253214501Srpaulo 254214501Srpaulo if (!ssid) { 255214501Srpaulo if (!(mgmt->da[0] & 0x01)) { 256214501Srpaulo char ssid_txt[33]; 257214501Srpaulo ieee802_11_print_ssid(ssid_txt, elems.ssid, 258214501Srpaulo elems.ssid_len); 259214501Srpaulo wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 260214501Srpaulo " for foreign SSID '%s'", 261214501Srpaulo MAC2STR(mgmt->sa), ssid_txt); 262214501Srpaulo } 263214501Srpaulo return; 264214501Srpaulo } 265214501Srpaulo 266214501Srpaulo /* TODO: verify that supp_rates contains at least one matching rate 267214501Srpaulo * with AP configuration */ 268214501Srpaulo#define MAX_PROBERESP_LEN 768 269214501Srpaulo buflen = MAX_PROBERESP_LEN; 270214501Srpaulo#ifdef CONFIG_WPS 271214501Srpaulo if (hapd->wps_probe_resp_ie) 272214501Srpaulo buflen += wpabuf_len(hapd->wps_probe_resp_ie); 273214501Srpaulo#endif /* CONFIG_WPS */ 274214501Srpaulo resp = os_zalloc(buflen); 275214501Srpaulo if (resp == NULL) 276214501Srpaulo return; 277214501Srpaulo epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 278214501Srpaulo 279214501Srpaulo resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 280214501Srpaulo WLAN_FC_STYPE_PROBE_RESP); 281214501Srpaulo os_memcpy(resp->da, mgmt->sa, ETH_ALEN); 282214501Srpaulo os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 283214501Srpaulo 284214501Srpaulo os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 285214501Srpaulo resp->u.probe_resp.beacon_int = 286214501Srpaulo host_to_le16(hapd->iconf->beacon_int); 287214501Srpaulo 288214501Srpaulo /* hardware or low-level driver will setup seq_ctrl and timestamp */ 289214501Srpaulo resp->u.probe_resp.capab_info = 290214501Srpaulo host_to_le16(hostapd_own_capab_info(hapd, sta, 1)); 291214501Srpaulo 292214501Srpaulo pos = resp->u.probe_resp.variable; 293214501Srpaulo *pos++ = WLAN_EID_SSID; 294214501Srpaulo *pos++ = ssid_len; 295214501Srpaulo os_memcpy(pos, ssid, ssid_len); 296214501Srpaulo pos += ssid_len; 297214501Srpaulo 298214501Srpaulo /* Supported rates */ 299214501Srpaulo pos = hostapd_eid_supp_rates(hapd, pos); 300214501Srpaulo 301214501Srpaulo /* DS Params */ 302214501Srpaulo pos = hostapd_eid_ds_params(hapd, pos); 303214501Srpaulo 304214501Srpaulo pos = hostapd_eid_country(hapd, pos, epos - pos); 305214501Srpaulo 306214501Srpaulo /* ERP Information element */ 307214501Srpaulo pos = hostapd_eid_erp_info(hapd, pos); 308214501Srpaulo 309214501Srpaulo /* Extended supported rates */ 310214501Srpaulo pos = hostapd_eid_ext_supp_rates(hapd, pos); 311214501Srpaulo 312214501Srpaulo /* RSN, MDIE, WPA */ 313214501Srpaulo pos = hostapd_eid_wpa(hapd, pos, epos - pos, sta); 314214501Srpaulo 315214501Srpaulo#ifdef CONFIG_IEEE80211N 316214501Srpaulo pos = hostapd_eid_ht_capabilities(hapd, pos); 317214501Srpaulo pos = hostapd_eid_ht_operation(hapd, pos); 318214501Srpaulo#endif /* CONFIG_IEEE80211N */ 319214501Srpaulo 320214501Srpaulo /* Wi-Fi Alliance WMM */ 321214501Srpaulo pos = hostapd_eid_wmm(hapd, pos); 322214501Srpaulo 323214501Srpaulo#ifdef CONFIG_WPS 324214501Srpaulo if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 325214501Srpaulo os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 326214501Srpaulo wpabuf_len(hapd->wps_probe_resp_ie)); 327214501Srpaulo pos += wpabuf_len(hapd->wps_probe_resp_ie); 328214501Srpaulo } 329214501Srpaulo#endif /* CONFIG_WPS */ 330214501Srpaulo 331214501Srpaulo if (hapd->drv.send_mgmt_frame(hapd, resp, pos - (u8 *) resp) < 0) 332214501Srpaulo perror("handle_probe_req: send"); 333214501Srpaulo 334214501Srpaulo os_free(resp); 335214501Srpaulo 336214501Srpaulo wpa_printf(MSG_MSGDUMP, "STA " MACSTR " sent probe request for %s " 337214501Srpaulo "SSID", MAC2STR(mgmt->sa), 338214501Srpaulo elems.ssid_len == 0 ? "broadcast" : "our"); 339214501Srpaulo} 340214501Srpaulo 341214501Srpaulo 342214501Srpaulovoid ieee802_11_set_beacon(struct hostapd_data *hapd) 343214501Srpaulo{ 344214501Srpaulo struct ieee80211_mgmt *head; 345214501Srpaulo u8 *pos, *tail, *tailpos; 346214501Srpaulo u16 capab_info; 347214501Srpaulo size_t head_len, tail_len; 348214501Srpaulo 349214501Srpaulo#define BEACON_HEAD_BUF_SIZE 256 350214501Srpaulo#define BEACON_TAIL_BUF_SIZE 512 351214501Srpaulo head = os_zalloc(BEACON_HEAD_BUF_SIZE); 352214501Srpaulo tail_len = BEACON_TAIL_BUF_SIZE; 353214501Srpaulo#ifdef CONFIG_WPS 354214501Srpaulo if (hapd->conf->wps_state && hapd->wps_beacon_ie) 355214501Srpaulo tail_len += wpabuf_len(hapd->wps_beacon_ie); 356214501Srpaulo#endif /* CONFIG_WPS */ 357214501Srpaulo tailpos = tail = os_malloc(tail_len); 358214501Srpaulo if (head == NULL || tail == NULL) { 359214501Srpaulo wpa_printf(MSG_ERROR, "Failed to set beacon data"); 360214501Srpaulo os_free(head); 361214501Srpaulo os_free(tail); 362214501Srpaulo return; 363214501Srpaulo } 364214501Srpaulo 365214501Srpaulo head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 366214501Srpaulo WLAN_FC_STYPE_BEACON); 367214501Srpaulo head->duration = host_to_le16(0); 368214501Srpaulo os_memset(head->da, 0xff, ETH_ALEN); 369214501Srpaulo 370214501Srpaulo os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 371214501Srpaulo os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 372214501Srpaulo head->u.beacon.beacon_int = 373214501Srpaulo host_to_le16(hapd->iconf->beacon_int); 374214501Srpaulo 375214501Srpaulo /* hardware or low-level driver will setup seq_ctrl and timestamp */ 376214501Srpaulo capab_info = hostapd_own_capab_info(hapd, NULL, 0); 377214501Srpaulo head->u.beacon.capab_info = host_to_le16(capab_info); 378214501Srpaulo pos = &head->u.beacon.variable[0]; 379214501Srpaulo 380214501Srpaulo /* SSID */ 381214501Srpaulo *pos++ = WLAN_EID_SSID; 382214501Srpaulo if (hapd->conf->ignore_broadcast_ssid == 2) { 383214501Srpaulo /* clear the data, but keep the correct length of the SSID */ 384214501Srpaulo *pos++ = hapd->conf->ssid.ssid_len; 385214501Srpaulo os_memset(pos, 0, hapd->conf->ssid.ssid_len); 386214501Srpaulo pos += hapd->conf->ssid.ssid_len; 387214501Srpaulo } else if (hapd->conf->ignore_broadcast_ssid) { 388214501Srpaulo *pos++ = 0; /* empty SSID */ 389214501Srpaulo } else { 390214501Srpaulo *pos++ = hapd->conf->ssid.ssid_len; 391214501Srpaulo os_memcpy(pos, hapd->conf->ssid.ssid, 392214501Srpaulo hapd->conf->ssid.ssid_len); 393214501Srpaulo pos += hapd->conf->ssid.ssid_len; 394214501Srpaulo } 395214501Srpaulo 396214501Srpaulo /* Supported rates */ 397214501Srpaulo pos = hostapd_eid_supp_rates(hapd, pos); 398214501Srpaulo 399214501Srpaulo /* DS Params */ 400214501Srpaulo pos = hostapd_eid_ds_params(hapd, pos); 401214501Srpaulo 402214501Srpaulo head_len = pos - (u8 *) head; 403214501Srpaulo 404214501Srpaulo tailpos = hostapd_eid_country(hapd, tailpos, 405214501Srpaulo tail + BEACON_TAIL_BUF_SIZE - tailpos); 406214501Srpaulo 407214501Srpaulo /* ERP Information element */ 408214501Srpaulo tailpos = hostapd_eid_erp_info(hapd, tailpos); 409214501Srpaulo 410214501Srpaulo /* Extended supported rates */ 411214501Srpaulo tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 412214501Srpaulo 413214501Srpaulo /* RSN, MDIE, WPA */ 414214501Srpaulo tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE - 415214501Srpaulo tailpos, NULL); 416214501Srpaulo 417214501Srpaulo#ifdef CONFIG_IEEE80211N 418214501Srpaulo tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 419214501Srpaulo tailpos = hostapd_eid_ht_operation(hapd, tailpos); 420214501Srpaulo#endif /* CONFIG_IEEE80211N */ 421214501Srpaulo 422214501Srpaulo /* Wi-Fi Alliance WMM */ 423214501Srpaulo tailpos = hostapd_eid_wmm(hapd, tailpos); 424214501Srpaulo 425214501Srpaulo#ifdef CONFIG_WPS 426214501Srpaulo if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 427214501Srpaulo os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 428214501Srpaulo wpabuf_len(hapd->wps_beacon_ie)); 429214501Srpaulo tailpos += wpabuf_len(hapd->wps_beacon_ie); 430214501Srpaulo } 431214501Srpaulo#endif /* CONFIG_WPS */ 432214501Srpaulo 433214501Srpaulo tail_len = tailpos > tail ? tailpos - tail : 0; 434214501Srpaulo 435214501Srpaulo if (hapd->drv.set_beacon(hapd, (u8 *) head, head_len, 436214501Srpaulo tail, tail_len, hapd->conf->dtim_period, 437214501Srpaulo hapd->iconf->beacon_int)) 438214501Srpaulo wpa_printf(MSG_ERROR, "Failed to set beacon head/tail or DTIM " 439214501Srpaulo "period"); 440214501Srpaulo 441214501Srpaulo os_free(tail); 442214501Srpaulo os_free(head); 443214501Srpaulo 444214501Srpaulo hapd->drv.set_bss_params(hapd, !!(ieee802_11_erp_info(hapd) & 445214501Srpaulo ERP_INFO_USE_PROTECTION)); 446214501Srpaulo} 447214501Srpaulo 448214501Srpaulo 449214501Srpaulovoid ieee802_11_set_beacons(struct hostapd_iface *iface) 450214501Srpaulo{ 451214501Srpaulo size_t i; 452214501Srpaulo for (i = 0; i < iface->num_bss; i++) 453214501Srpaulo ieee802_11_set_beacon(iface->bss[i]); 454214501Srpaulo} 455214501Srpaulo 456214501Srpaulo#endif /* CONFIG_NATIVE_WINDOWS */ 457