[thirdparty/hostap.git] / src / ap / ap_list.c

/*
 * hostapd / AP table
 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
 * Copyright (c) 2006, Devicescape Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#include "utils/includes.h"

#include "utils/common.h"
#include "utils/eloop.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "drivers/driver.h"
#include "hostapd.h"
#include "ap_config.h"
#include "ieee802_11.h"
#include "sta_info.h"
#include "beacon.h"
#include "ap_list.h"


/* AP list is a double linked list with head->prev pointing to the end of the
 * list and tail->next = NULL. Entries are moved to the head of the list
 * whenever a beacon has been received from the AP in question. The tail entry
 * in this link will thus be the least recently used entry. */


static int ap_list_beacon_olbc(struct hostapd_iface *iface, struct ap_info *ap)
{
	int i;

	if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G ||
	    iface->conf->channel != ap->channel)
		return 0;

	if (ap->erp != -1 && (ap->erp & ERP_INFO_NON_ERP_PRESENT))
		return 1;

	for (i = 0; i < WLAN_SUPP_RATES_MAX; i++) {
		int rate = (ap->supported_rates[i] & 0x7f) * 5;
		if (rate == 60 || rate == 90 || rate > 110)
			return 0;
	}

	return 1;
}


struct ap_info * ap_get_ap(struct hostapd_iface *iface, const u8 *ap)
{
	struct ap_info *s;

	s = iface->ap_hash[STA_HASH(ap)];
	while (s != NULL && os_memcmp(s->addr, ap, ETH_ALEN) != 0)
		s = s->hnext;
	return s;
}


static void ap_ap_list_add(struct hostapd_iface *iface, struct ap_info *ap)
{
	if (iface->ap_list) {
		ap->prev = iface->ap_list->prev;
		iface->ap_list->prev = ap;
	} else
		ap->prev = ap;
	ap->next = iface->ap_list;
	iface->ap_list = ap;
}


static void ap_ap_list_del(struct hostapd_iface *iface, struct ap_info *ap)
{
	if (iface->ap_list == ap)
		iface->ap_list = ap->next;
	else
		ap->prev->next = ap->next;

	if (ap->next)
		ap->next->prev = ap->prev;
	else if (iface->ap_list)
		iface->ap_list->prev = ap->prev;
}


static void ap_ap_iter_list_add(struct hostapd_iface *iface,
				struct ap_info *ap)
{
	if (iface->ap_iter_list) {
		ap->iter_prev = iface->ap_iter_list->iter_prev;
		iface->ap_iter_list->iter_prev = ap;
	} else
		ap->iter_prev = ap;
	ap->iter_next = iface->ap_iter_list;
	iface->ap_iter_list = ap;
}


static void ap_ap_iter_list_del(struct hostapd_iface *iface,
				struct ap_info *ap)
{
	if (iface->ap_iter_list == ap)
		iface->ap_iter_list = ap->iter_next;
	else
		ap->iter_prev->iter_next = ap->iter_next;

	if (ap->iter_next)
		ap->iter_next->iter_prev = ap->iter_prev;
	else if (iface->ap_iter_list)
		iface->ap_iter_list->iter_prev = ap->iter_prev;
}


static void ap_ap_hash_add(struct hostapd_iface *iface, struct ap_info *ap)
{
	ap->hnext = iface->ap_hash[STA_HASH(ap->addr)];
	iface->ap_hash[STA_HASH(ap->addr)] = ap;
}


static void ap_ap_hash_del(struct hostapd_iface *iface, struct ap_info *ap)
{
	struct ap_info *s;

	s = iface->ap_hash[STA_HASH(ap->addr)];
	if (s == NULL) return;
	if (os_memcmp(s->addr, ap->addr, ETH_ALEN) == 0) {
		iface->ap_hash[STA_HASH(ap->addr)] = s->hnext;
		return;
	}

	while (s->hnext != NULL &&
	       os_memcmp(s->hnext->addr, ap->addr, ETH_ALEN) != 0)
		s = s->hnext;
	if (s->hnext != NULL)
		s->hnext = s->hnext->hnext;
	else
		printf("AP: could not remove AP " MACSTR " from hash table\n",
		       MAC2STR(ap->addr));
}


static void ap_free_ap(struct hostapd_iface *iface, struct ap_info *ap)
{
	ap_ap_hash_del(iface, ap);
	ap_ap_list_del(iface, ap);
	ap_ap_iter_list_del(iface, ap);

	iface->num_ap--;
	os_free(ap);
}


static void hostapd_free_aps(struct hostapd_iface *iface)
{
	struct ap_info *ap, *prev;

	ap = iface->ap_list;

	while (ap) {
		prev = ap;
		ap = ap->next;
		ap_free_ap(iface, prev);
	}

	iface->ap_list = NULL;
}


int ap_ap_for_each(struct hostapd_iface *iface,
		   int (*func)(struct ap_info *s, void *data), void *data)
{
	struct ap_info *s;
	int ret = 0;

	s = iface->ap_list;

	while (s) {
		ret = func(s, data);
		if (ret)
			break;
		s = s->next;
	}

	return ret;
}


static struct ap_info * ap_ap_add(struct hostapd_iface *iface, const u8 *addr)
{
	struct ap_info *ap;

	ap = os_zalloc(sizeof(struct ap_info));
	if (ap == NULL)
		return NULL;

	/* initialize AP info data */
	os_memcpy(ap->addr, addr, ETH_ALEN);
	ap_ap_list_add(iface, ap);
	iface->num_ap++;
	ap_ap_hash_add(iface, ap);
	ap_ap_iter_list_add(iface, ap);

	if (iface->num_ap > iface->conf->ap_table_max_size && ap != ap->prev) {
		wpa_printf(MSG_DEBUG, "Removing the least recently used AP "
			   MACSTR " from AP table", MAC2STR(ap->prev->addr));
		ap_free_ap(iface, ap->prev);
	}

	return ap;
}


void ap_list_process_beacon(struct hostapd_iface *iface,
			    const struct ieee80211_mgmt *mgmt,
			    struct ieee802_11_elems *elems,
			    struct hostapd_frame_info *fi)
{
	struct ap_info *ap;
	int new_ap = 0;
	size_t len;
	int set_beacon = 0;

	if (iface->conf->ap_table_max_size < 1)
		return;

	ap = ap_get_ap(iface, mgmt->bssid);
	if (!ap) {
		ap = ap_ap_add(iface, mgmt->bssid);
		if (!ap) {
			printf("Failed to allocate AP information entry\n");
			return;
		}
		new_ap = 1;
	}

	ap->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
	ap->capability = le_to_host16(mgmt->u.beacon.capab_info);

	if (elems->ssid) {
		len = elems->ssid_len;
		if (len >= sizeof(ap->ssid))
			len = sizeof(ap->ssid) - 1;
		os_memcpy(ap->ssid, elems->ssid, len);
		ap->ssid[len] = '\0';
		ap->ssid_len = len;
	}

	os_memset(ap->supported_rates, 0, WLAN_SUPP_RATES_MAX);
	len = 0;
	if (elems->supp_rates) {
		len = elems->supp_rates_len;
		if (len > WLAN_SUPP_RATES_MAX)
			len = WLAN_SUPP_RATES_MAX;
		os_memcpy(ap->supported_rates, elems->supp_rates, len);
	}
	if (elems->ext_supp_rates) {
		int len2;
		if (len + elems->ext_supp_rates_len > WLAN_SUPP_RATES_MAX)
			len2 = WLAN_SUPP_RATES_MAX - len;
		else
			len2 = elems->ext_supp_rates_len;
		os_memcpy(ap->supported_rates + len, elems->ext_supp_rates,
			  len2);
	}

	ap->wpa = elems->wpa_ie != NULL;

	if (elems->erp_info && elems->erp_info_len == 1)
		ap->erp = elems->erp_info[0];
	else
		ap->erp = -1;

	if (elems->ds_params && elems->ds_params_len == 1)
		ap->channel = elems->ds_params[0];
	else if (fi)
		ap->channel = fi->channel;

	if (elems->ht_capabilities)
		ap->ht_support = 1;
	else
		ap->ht_support = 0;

	ap->num_beacons++;
	time(&ap->last_beacon);
	if (fi) {
		ap->ssi_signal = fi->ssi_signal;
		ap->datarate = fi->datarate;
	}

	if (!new_ap && ap != iface->ap_list) {
		/* move AP entry into the beginning of the list so that the
		 * oldest entry is always in the end of the list */
		ap_ap_list_del(iface, ap);
		ap_ap_list_add(iface, ap);
	}

	if (!iface->olbc &&
	    ap_list_beacon_olbc(iface, ap)) {
		iface->olbc = 1;
		wpa_printf(MSG_DEBUG, "OLBC AP detected: " MACSTR " - enable "
			   "protection", MAC2STR(ap->addr));
		set_beacon++;
	}

#ifdef CONFIG_IEEE80211N
	if (!iface->olbc_ht && !ap->ht_support) {
		iface->olbc_ht = 1;
		hostapd_ht_operation_update(iface);
		wpa_printf(MSG_DEBUG, "OLBC HT AP detected: " MACSTR
			   " - enable protection", MAC2STR(ap->addr));
		set_beacon++;
	}
#endif /* CONFIG_IEEE80211N */

	if (set_beacon)
		ieee802_11_set_beacons(iface);
}


static void ap_list_timer(void *eloop_ctx, void *timeout_ctx)
{
	struct hostapd_iface *iface = eloop_ctx;
	time_t now;
	struct ap_info *ap;
	int set_beacon = 0;

	eloop_register_timeout(10, 0, ap_list_timer, iface, NULL);

	if (!iface->ap_list)
		return;

	time(&now);

	while (iface->ap_list) {
		ap = iface->ap_list->prev;
		if (ap->last_beacon + iface->conf->ap_table_expiration_time >=
		    now)
			break;

		ap_free_ap(iface, ap);
	}

	if (iface->olbc || iface->olbc_ht) {
		int olbc = 0;
		int olbc_ht = 0;

		ap = iface->ap_list;
		while (ap && (olbc == 0 || olbc_ht == 0)) {
			if (ap_list_beacon_olbc(iface, ap))
				olbc = 1;
			if (!ap->ht_support)
				olbc_ht = 1;
			ap = ap->next;
		}
		if (!olbc && iface->olbc) {
			wpa_printf(MSG_DEBUG, "OLBC not detected anymore");
			iface->olbc = 0;
			set_beacon++;
		}
#ifdef CONFIG_IEEE80211N
		if (!olbc_ht && iface->olbc_ht) {
			wpa_printf(MSG_DEBUG, "OLBC HT not detected anymore");
			iface->olbc_ht = 0;
			hostapd_ht_operation_update(iface);
			set_beacon++;
		}
#endif /* CONFIG_IEEE80211N */
	}

	if (set_beacon)
		ieee802_11_set_beacons(iface);
}


int ap_list_init(struct hostapd_iface *iface)
{
	eloop_register_timeout(10, 0, ap_list_timer, iface, NULL);
	return 0;
}


void ap_list_deinit(struct hostapd_iface *iface)
{
	eloop_cancel_timeout(ap_list_timer, iface, NULL);
	hostapd_free_aps(iface);
}
Commit	Line	Data
6fc6879b JM	1	/*
6fc6879b JM	2	* hostapd / AP table
1057d78e	3	* Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
71b6ae14 TW	4	* Copyright (c) 2003-2004, Instant802 Networks, Inc.
71b6ae14 TW	5	* Copyright (c) 2006, Devicescape Software, Inc.
6fc6879b JM	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
1057d78e	17	#include "utils/includes.h"
6fc6879b	18
1057d78e JM	19	#include "utils/common.h"
1057d78e JM	20	#include "utils/eloop.h"
81f4f619 JM	21	#include "common/ieee802_11_defs.h"
81f4f619 JM	22	#include "common/ieee802_11_common.h"
1057d78e	23	#include "drivers/driver.h"
6fc6879b	24	#include "hostapd.h"
6226e38d	25	#include "ap_config.h"
6fc6879b	26	#include "ieee802_11.h"
97234b50	27	#include "sta_info.h"
6fc6879b	28	#include "beacon.h"
1057d78e	29	#include "ap_list.h"
6fc6879b JM	30
6fc6879b JM	31
6fc6879b JM	32	/* AP list is a double linked list with head->prev pointing to the end of the
	33	* list and tail->next = NULL. Entries are moved to the head of the list
	34	* whenever a beacon has been received from the AP in question. The tail entry
	35	* in this link will thus be the least recently used entry. */
	36
	37
6fc6879b JM	38	static int ap_list_beacon_olbc(struct hostapd_iface iface, struct ap_info ap)
	39	{
	40	int i;
	41
	42	if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G \|\|
6fc6879b JM	43	iface->conf->channel != ap->channel)
	44	return 0;
	45
	46	if (ap->erp != -1 && (ap->erp & ERP_INFO_NON_ERP_PRESENT))
	47	return 1;
	48
	49	for (i = 0; i < WLAN_SUPP_RATES_MAX; i++) {
	50	int rate = (ap->supported_rates[i] & 0x7f) * 5;
	51	if (rate == 60 \|\| rate == 90 \|\| rate > 110)
	52	return 0;
	53	}
	54
	55	return 1;
	56	}
	57
	58
b57e086c	59	struct ap_info * ap_get_ap(struct hostapd_iface iface, const u8 ap)
6fc6879b JM	60	{
	61	struct ap_info *s;
	62
	63	s = iface->ap_hash[STA_HASH(ap)];
	64	while (s != NULL && os_memcmp(s->addr, ap, ETH_ALEN) != 0)
	65	s = s->hnext;
	66	return s;
	67	}
	68
	69
	70	static void ap_ap_list_add(struct hostapd_iface iface, struct ap_info ap)
	71	{
	72	if (iface->ap_list) {
	73	ap->prev = iface->ap_list->prev;
	74	iface->ap_list->prev = ap;
	75	} else
	76	ap->prev = ap;
	77	ap->next = iface->ap_list;
	78	iface->ap_list = ap;
	79	}
	80
	81
	82	static void ap_ap_list_del(struct hostapd_iface iface, struct ap_info ap)
	83	{
	84	if (iface->ap_list == ap)
	85	iface->ap_list = ap->next;
	86	else
	87	ap->prev->next = ap->next;
	88
	89	if (ap->next)
	90	ap->next->prev = ap->prev;
	91	else if (iface->ap_list)
	92	iface->ap_list->prev = ap->prev;
	93	}
	94
	95
	96	static void ap_ap_iter_list_add(struct hostapd_iface *iface,
	97	struct ap_info *ap)
	98	{
	99	if (iface->ap_iter_list) {
	100	ap->iter_prev = iface->ap_iter_list->iter_prev;
	101	iface->ap_iter_list->iter_prev = ap;
	102	} else
	103	ap->iter_prev = ap;
	104	ap->iter_next = iface->ap_iter_list;
	105	iface->ap_iter_list = ap;
	106	}
	107
	108
	109	static void ap_ap_iter_list_del(struct hostapd_iface *iface,
	110	struct ap_info *ap)
	111	{
	112	if (iface->ap_iter_list == ap)
	113	iface->ap_iter_list = ap->iter_next;
	114	else
	115	ap->iter_prev->iter_next = ap->iter_next;
	116
	117	if (ap->iter_next)
	118	ap->iter_next->iter_prev = ap->iter_prev;
	119	else if (iface->ap_iter_list)
	120	iface->ap_iter_list->iter_prev = ap->iter_prev;
	121	}
	122
	123
124	static void ap_ap_hash_add(struct hostapd_iface iface, struct ap_info ap)
125	{
126	ap->hnext = iface->ap_hash[STA_HASH(ap->addr)];
127	iface->ap_hash[STA_HASH(ap->addr)] = ap;
128	}
129
130
131	static void ap_ap_hash_del(struct hostapd_iface iface, struct ap_info ap)
132	{
133	struct ap_info *s;
134
135	s = iface->ap_hash[STA_HASH(ap->addr)];
136	if (s == NULL) return;
137	if (os_memcmp(s->addr, ap->addr, ETH_ALEN) == 0) {
138	iface->ap_hash[STA_HASH(ap->addr)] = s->hnext;
139	return;
140	}
141
142	while (s->hnext != NULL &&
143	os_memcmp(s->hnext->addr, ap->addr, ETH_ALEN) != 0)
144	s = s->hnext;
145	if (s->hnext != NULL)
146	s->hnext = s->hnext->hnext;
147	else
148	printf("AP: could not remove AP " MACSTR " from hash table\n",
149	MAC2STR(ap->addr));
150	}
151
152
153	static void ap_free_ap(struct hostapd_iface iface, struct ap_info ap)
154	{
155	ap_ap_hash_del(iface, ap);
156	ap_ap_list_del(iface, ap);
157	ap_ap_iter_list_del(iface, ap);
158
159	iface->num_ap--;
160	os_free(ap);
161	}
162
163
164	static void hostapd_free_aps(struct hostapd_iface *iface)
165	{
166	struct ap_info ap, prev;
167
168	ap = iface->ap_list;
169
170	while (ap) {
171	prev = ap;
172	ap = ap->next;
173	ap_free_ap(iface, prev);
174	}
175
176	iface->ap_list = NULL;
177	}
178
179
180	int ap_ap_for_each(struct hostapd_iface *iface,
181	int (func)(struct ap_info s, void data), void data)
182	{
183	struct ap_info *s;
184	int ret = 0;
185
186	s = iface->ap_list;
187
188	while (s) {
189	ret = func(s, data);
190	if (ret)
191	break;
192	s = s->next;
193	}
194
195	return ret;
196	}
197
198
b57e086c	199	static struct ap_info * ap_ap_add(struct hostapd_iface iface, const u8 addr)
6fc6879b JM	200	{
	201	struct ap_info *ap;
	202
	203	ap = os_zalloc(sizeof(struct ap_info));
	204	if (ap == NULL)
	205	return NULL;
	206
	207	/* initialize AP info data */
	208	os_memcpy(ap->addr, addr, ETH_ALEN);
	209	ap_ap_list_add(iface, ap);
	210	iface->num_ap++;
	211	ap_ap_hash_add(iface, ap);
	212	ap_ap_iter_list_add(iface, ap);
	213
	214	if (iface->num_ap > iface->conf->ap_table_max_size && ap != ap->prev) {
	215	wpa_printf(MSG_DEBUG, "Removing the least recently used AP "
	216	MACSTR " from AP table", MAC2STR(ap->prev->addr));
6fc6879b JM	217	ap_free_ap(iface, ap->prev);
	218	}
	219
	220	return ap;
	221	}
	222
	223
	224	void ap_list_process_beacon(struct hostapd_iface *iface,
b57e086c	225	const struct ieee80211_mgmt *mgmt,
6fc6879b JM	226	struct ieee802_11_elems *elems,
	227	struct hostapd_frame_info *fi)
	228	{
	229	struct ap_info *ap;
	230	int new_ap = 0;
	231	size_t len;
de9289c8	232	int set_beacon = 0;
6fc6879b JM	233
	234	if (iface->conf->ap_table_max_size < 1)
	235	return;
	236
	237	ap = ap_get_ap(iface, mgmt->bssid);
	238	if (!ap) {
	239	ap = ap_ap_add(iface, mgmt->bssid);
	240	if (!ap) {
	241	printf("Failed to allocate AP information entry\n");
	242	return;
	243	}
	244	new_ap = 1;
	245	}
	246
	247	ap->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
	248	ap->capability = le_to_host16(mgmt->u.beacon.capab_info);
	249
	250	if (elems->ssid) {
	251	len = elems->ssid_len;
	252	if (len >= sizeof(ap->ssid))
	253	len = sizeof(ap->ssid) - 1;
	254	os_memcpy(ap->ssid, elems->ssid, len);
	255	ap->ssid[len] = '\0';
	256	ap->ssid_len = len;
	257	}
	258
	259	os_memset(ap->supported_rates, 0, WLAN_SUPP_RATES_MAX);
	260	len = 0;
	261	if (elems->supp_rates) {
	262	len = elems->supp_rates_len;
	263	if (len > WLAN_SUPP_RATES_MAX)
	264	len = WLAN_SUPP_RATES_MAX;
	265	os_memcpy(ap->supported_rates, elems->supp_rates, len);
	266	}
	267	if (elems->ext_supp_rates) {
	268	int len2;
	269	if (len + elems->ext_supp_rates_len > WLAN_SUPP_RATES_MAX)
	270	len2 = WLAN_SUPP_RATES_MAX - len;
	271	else
	272	len2 = elems->ext_supp_rates_len;
	273	os_memcpy(ap->supported_rates + len, elems->ext_supp_rates,
	274	len2);
	275	}
	276
	277	ap->wpa = elems->wpa_ie != NULL;
	278
	279	if (elems->erp_info && elems->erp_info_len == 1)
	280	ap->erp = elems->erp_info[0];
	281	else
	282	ap->erp = -1;
	283
	284	if (elems->ds_params && elems->ds_params_len == 1)
	285	ap->channel = elems->ds_params[0];
	286	else if (fi)
	287	ap->channel = fi->channel;
	288
de9289c8 JM	289	if (elems->ht_capabilities)
	290	ap->ht_support = 1;
	291	else
	292	ap->ht_support = 0;
	293
6fc6879b JM	294	ap->num_beacons++;
	295	time(&ap->last_beacon);
	296	if (fi) {
6fc6879b JM	297	ap->ssi_signal = fi->ssi_signal;
	298	ap->datarate = fi->datarate;
	299	}
	300
61693eaa	301	if (!new_ap && ap != iface->ap_list) {
6fc6879b JM	302	/* move AP entry into the beginning of the list so that the
	303	* oldest entry is always in the end of the list */
	304	ap_ap_list_del(iface, ap);
	305	ap_ap_list_add(iface, ap);
	306	}
	307
	308	if (!iface->olbc &&
	309	ap_list_beacon_olbc(iface, ap)) {
6fc6879b JM	310	iface->olbc = 1;
	311	wpa_printf(MSG_DEBUG, "OLBC AP detected: " MACSTR " - enable "
	312	"protection", MAC2STR(ap->addr));
de9289c8	313	set_beacon++;
6fc6879b	314	}
de9289c8 JM	315
de9289c8 JM	316	#ifdef CONFIG_IEEE80211N
eb53b752	317	if (!iface->olbc_ht && !ap->ht_support) {
de9289c8 JM	318	iface->olbc_ht = 1;
	319	hostapd_ht_operation_update(iface);
	320	wpa_printf(MSG_DEBUG, "OLBC HT AP detected: " MACSTR
	321	" - enable protection", MAC2STR(ap->addr));
	322	set_beacon++;
	323	}
	324	#endif /* CONFIG_IEEE80211N */
	325
	326	if (set_beacon)
	327	ieee802_11_set_beacons(iface);
6fc6879b JM	328	}
	329
	330
	331	static void ap_list_timer(void eloop_ctx, void timeout_ctx)
	332	{
	333	struct hostapd_iface *iface = eloop_ctx;
	334	time_t now;
	335	struct ap_info *ap;
de9289c8	336	int set_beacon = 0;
6fc6879b JM	337
	338	eloop_register_timeout(10, 0, ap_list_timer, iface, NULL);
	339
	340	if (!iface->ap_list)
	341	return;
	342
	343	time(&now);
	344
6fc6879b JM	345	while (iface->ap_list) {
	346	ap = iface->ap_list->prev;
	347	if (ap->last_beacon + iface->conf->ap_table_expiration_time >=
	348	now)
	349	break;
	350
6fc6879b JM	351	ap_free_ap(iface, ap);
	352	}
	353
de9289c8	354	if (iface->olbc \|\| iface->olbc_ht) {
6fc6879b	355	int olbc = 0;
de9289c8 JM	356	int olbc_ht = 0;
de9289c8 JM	357
6fc6879b	358	ap = iface->ap_list;
de9289c8 JM	359	while (ap && (olbc == 0 \|\| olbc_ht == 0)) {
de9289c8 JM	360	if (ap_list_beacon_olbc(iface, ap))
6fc6879b	361	olbc = 1;
eb53b752	362	if (!ap->ht_support)
de9289c8	363	olbc_ht = 1;
6fc6879b JM	364	ap = ap->next;
6fc6879b JM	365	}
de9289c8	366	if (!olbc && iface->olbc) {
6fc6879b JM	367	wpa_printf(MSG_DEBUG, "OLBC not detected anymore");
6fc6879b JM	368	iface->olbc = 0;
de9289c8 JM	369	set_beacon++;
	370	}
	371	#ifdef CONFIG_IEEE80211N
	372	if (!olbc_ht && iface->olbc_ht) {
	373	wpa_printf(MSG_DEBUG, "OLBC HT not detected anymore");
	374	iface->olbc_ht = 0;
	375	hostapd_ht_operation_update(iface);
	376	set_beacon++;
6fc6879b	377	}
de9289c8	378	#endif /* CONFIG_IEEE80211N */
6fc6879b	379	}
de9289c8 JM	380
	381	if (set_beacon)
	382	ieee802_11_set_beacons(iface);
6fc6879b JM	383	}
	384
	385
	386	int ap_list_init(struct hostapd_iface *iface)
	387	{
	388	eloop_register_timeout(10, 0, ap_list_timer, iface, NULL);
	389	return 0;
	390	}
	391
	392
	393	void ap_list_deinit(struct hostapd_iface *iface)
	394	{
	395	eloop_cancel_timeout(ap_list_timer, iface, NULL);
	396	hostapd_free_aps(iface);
	397	}