[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 "drivers/driver.h"
#include "hostapd.h"
#include "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"
	20	#include "utils/eloop.h"
	21	#include "drivers/driver.h"
6fc6879b	22	#include "hostapd.h"
b1c0e297	23	#include "config.h"
6fc6879b	24	#include "ieee802_11.h"
97234b50	25	#include "sta_info.h"
6fc6879b	26	#include "beacon.h"
1057d78e	27	#include "ap_list.h"
6fc6879b JM	28
6fc6879b JM	29
6fc6879b JM	30	/* AP list is a double linked list with head->prev pointing to the end of the
	31	* list and tail->next = NULL. Entries are moved to the head of the list
	32	* whenever a beacon has been received from the AP in question. The tail entry
	33	* in this link will thus be the least recently used entry. */
	34
	35
6fc6879b JM	36	static int ap_list_beacon_olbc(struct hostapd_iface iface, struct ap_info ap)
	37	{
	38	int i;
	39
	40	if (iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G \|\|
6fc6879b JM	41	iface->conf->channel != ap->channel)
	42	return 0;
	43
	44	if (ap->erp != -1 && (ap->erp & ERP_INFO_NON_ERP_PRESENT))
	45	return 1;
	46
	47	for (i = 0; i < WLAN_SUPP_RATES_MAX; i++) {
	48	int rate = (ap->supported_rates[i] & 0x7f) * 5;
	49	if (rate == 60 \|\| rate == 90 \|\| rate > 110)
	50	return 0;
	51	}
	52
	53	return 1;
	54	}
	55
	56
b57e086c	57	struct ap_info * ap_get_ap(struct hostapd_iface iface, const u8 ap)
6fc6879b JM	58	{
	59	struct ap_info *s;
	60
	61	s = iface->ap_hash[STA_HASH(ap)];
	62	while (s != NULL && os_memcmp(s->addr, ap, ETH_ALEN) != 0)
	63	s = s->hnext;
	64	return s;
	65	}
	66
	67
	68	static void ap_ap_list_add(struct hostapd_iface iface, struct ap_info ap)
	69	{
	70	if (iface->ap_list) {
	71	ap->prev = iface->ap_list->prev;
	72	iface->ap_list->prev = ap;
	73	} else
	74	ap->prev = ap;
	75	ap->next = iface->ap_list;
	76	iface->ap_list = ap;
	77	}
	78
	79
	80	static void ap_ap_list_del(struct hostapd_iface iface, struct ap_info ap)
	81	{
	82	if (iface->ap_list == ap)
	83	iface->ap_list = ap->next;
	84	else
	85	ap->prev->next = ap->next;
	86
	87	if (ap->next)
	88	ap->next->prev = ap->prev;
	89	else if (iface->ap_list)
	90	iface->ap_list->prev = ap->prev;
	91	}
	92
	93
	94	static void ap_ap_iter_list_add(struct hostapd_iface *iface,
	95	struct ap_info *ap)
	96	{
	97	if (iface->ap_iter_list) {
	98	ap->iter_prev = iface->ap_iter_list->iter_prev;
	99	iface->ap_iter_list->iter_prev = ap;
	100	} else
	101	ap->iter_prev = ap;
	102	ap->iter_next = iface->ap_iter_list;
	103	iface->ap_iter_list = ap;
	104	}
	105
	106
	107	static void ap_ap_iter_list_del(struct hostapd_iface *iface,
	108	struct ap_info *ap)
	109	{
	110	if (iface->ap_iter_list == ap)
	111	iface->ap_iter_list = ap->iter_next;
	112	else
	113	ap->iter_prev->iter_next = ap->iter_next;
	114
	115	if (ap->iter_next)
	116	ap->iter_next->iter_prev = ap->iter_prev;
	117	else if (iface->ap_iter_list)
	118	iface->ap_iter_list->iter_prev = ap->iter_prev;
	119	}
	120
	121
122	static void ap_ap_hash_add(struct hostapd_iface iface, struct ap_info ap)
123	{
124	ap->hnext = iface->ap_hash[STA_HASH(ap->addr)];
125	iface->ap_hash[STA_HASH(ap->addr)] = ap;
126	}
127
128
129	static void ap_ap_hash_del(struct hostapd_iface iface, struct ap_info ap)
130	{
131	struct ap_info *s;
132
133	s = iface->ap_hash[STA_HASH(ap->addr)];
134	if (s == NULL) return;
135	if (os_memcmp(s->addr, ap->addr, ETH_ALEN) == 0) {
136	iface->ap_hash[STA_HASH(ap->addr)] = s->hnext;
137	return;
138	}
139
140	while (s->hnext != NULL &&
141	os_memcmp(s->hnext->addr, ap->addr, ETH_ALEN) != 0)
142	s = s->hnext;
143	if (s->hnext != NULL)
144	s->hnext = s->hnext->hnext;
145	else
146	printf("AP: could not remove AP " MACSTR " from hash table\n",
147	MAC2STR(ap->addr));
148	}
149
150
151	static void ap_free_ap(struct hostapd_iface iface, struct ap_info ap)
152	{
153	ap_ap_hash_del(iface, ap);
154	ap_ap_list_del(iface, ap);
155	ap_ap_iter_list_del(iface, ap);
156
157	iface->num_ap--;
158	os_free(ap);
159	}
160
161
162	static void hostapd_free_aps(struct hostapd_iface *iface)
163	{
164	struct ap_info ap, prev;
165
166	ap = iface->ap_list;
167
168	while (ap) {
169	prev = ap;
170	ap = ap->next;
171	ap_free_ap(iface, prev);
172	}
173
174	iface->ap_list = NULL;
175	}
176
177
178	int ap_ap_for_each(struct hostapd_iface *iface,
179	int (func)(struct ap_info s, void data), void data)
180	{
181	struct ap_info *s;
182	int ret = 0;
183
184	s = iface->ap_list;
185
186	while (s) {
187	ret = func(s, data);
188	if (ret)
189	break;
190	s = s->next;
191	}
192
193	return ret;
194	}
195
196
b57e086c	197	static struct ap_info * ap_ap_add(struct hostapd_iface iface, const u8 addr)
6fc6879b JM	198	{
	199	struct ap_info *ap;
	200
	201	ap = os_zalloc(sizeof(struct ap_info));
	202	if (ap == NULL)
	203	return NULL;
	204
	205	/* initialize AP info data */
	206	os_memcpy(ap->addr, addr, ETH_ALEN);
	207	ap_ap_list_add(iface, ap);
	208	iface->num_ap++;
	209	ap_ap_hash_add(iface, ap);
	210	ap_ap_iter_list_add(iface, ap);
	211
	212	if (iface->num_ap > iface->conf->ap_table_max_size && ap != ap->prev) {
	213	wpa_printf(MSG_DEBUG, "Removing the least recently used AP "
	214	MACSTR " from AP table", MAC2STR(ap->prev->addr));
6fc6879b JM	215	ap_free_ap(iface, ap->prev);
	216	}
	217
	218	return ap;
	219	}
	220
	221
	222	void ap_list_process_beacon(struct hostapd_iface *iface,
b57e086c	223	const struct ieee80211_mgmt *mgmt,
6fc6879b JM	224	struct ieee802_11_elems *elems,
	225	struct hostapd_frame_info *fi)
	226	{
	227	struct ap_info *ap;
	228	int new_ap = 0;
	229	size_t len;
de9289c8	230	int set_beacon = 0;
6fc6879b JM	231
	232	if (iface->conf->ap_table_max_size < 1)
	233	return;
	234
	235	ap = ap_get_ap(iface, mgmt->bssid);
	236	if (!ap) {
	237	ap = ap_ap_add(iface, mgmt->bssid);
	238	if (!ap) {
	239	printf("Failed to allocate AP information entry\n");
	240	return;
	241	}
	242	new_ap = 1;
	243	}
	244
	245	ap->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
	246	ap->capability = le_to_host16(mgmt->u.beacon.capab_info);
	247
	248	if (elems->ssid) {
	249	len = elems->ssid_len;
	250	if (len >= sizeof(ap->ssid))
	251	len = sizeof(ap->ssid) - 1;
	252	os_memcpy(ap->ssid, elems->ssid, len);
	253	ap->ssid[len] = '\0';
	254	ap->ssid_len = len;
	255	}
	256
	257	os_memset(ap->supported_rates, 0, WLAN_SUPP_RATES_MAX);
	258	len = 0;
	259	if (elems->supp_rates) {
	260	len = elems->supp_rates_len;
	261	if (len > WLAN_SUPP_RATES_MAX)
	262	len = WLAN_SUPP_RATES_MAX;
	263	os_memcpy(ap->supported_rates, elems->supp_rates, len);
	264	}
	265	if (elems->ext_supp_rates) {
	266	int len2;
	267	if (len + elems->ext_supp_rates_len > WLAN_SUPP_RATES_MAX)
	268	len2 = WLAN_SUPP_RATES_MAX - len;
	269	else
	270	len2 = elems->ext_supp_rates_len;
	271	os_memcpy(ap->supported_rates + len, elems->ext_supp_rates,
	272	len2);
	273	}
	274
	275	ap->wpa = elems->wpa_ie != NULL;
	276
	277	if (elems->erp_info && elems->erp_info_len == 1)
	278	ap->erp = elems->erp_info[0];
	279	else
	280	ap->erp = -1;
	281
	282	if (elems->ds_params && elems->ds_params_len == 1)
	283	ap->channel = elems->ds_params[0];
	284	else if (fi)
	285	ap->channel = fi->channel;
	286
de9289c8 JM	287	if (elems->ht_capabilities)
	288	ap->ht_support = 1;
	289	else
	290	ap->ht_support = 0;
	291
6fc6879b JM	292	ap->num_beacons++;
	293	time(&ap->last_beacon);
	294	if (fi) {
6fc6879b JM	295	ap->ssi_signal = fi->ssi_signal;
	296	ap->datarate = fi->datarate;
	297	}
	298
61693eaa	299	if (!new_ap && ap != iface->ap_list) {
6fc6879b JM	300	/* move AP entry into the beginning of the list so that the
	301	* oldest entry is always in the end of the list */
	302	ap_ap_list_del(iface, ap);
	303	ap_ap_list_add(iface, ap);
	304	}
	305
	306	if (!iface->olbc &&
	307	ap_list_beacon_olbc(iface, ap)) {
6fc6879b JM	308	iface->olbc = 1;
	309	wpa_printf(MSG_DEBUG, "OLBC AP detected: " MACSTR " - enable "
	310	"protection", MAC2STR(ap->addr));
de9289c8	311	set_beacon++;
6fc6879b	312	}
de9289c8 JM	313
de9289c8 JM	314	#ifdef CONFIG_IEEE80211N
eb53b752	315	if (!iface->olbc_ht && !ap->ht_support) {
de9289c8 JM	316	iface->olbc_ht = 1;
	317	hostapd_ht_operation_update(iface);
	318	wpa_printf(MSG_DEBUG, "OLBC HT AP detected: " MACSTR
	319	" - enable protection", MAC2STR(ap->addr));
	320	set_beacon++;
	321	}
	322	#endif /* CONFIG_IEEE80211N */
	323
	324	if (set_beacon)
	325	ieee802_11_set_beacons(iface);
6fc6879b JM	326	}
	327
	328
	329	static void ap_list_timer(void eloop_ctx, void timeout_ctx)
	330	{
	331	struct hostapd_iface *iface = eloop_ctx;
	332	time_t now;
	333	struct ap_info *ap;
de9289c8	334	int set_beacon = 0;
6fc6879b JM	335
	336	eloop_register_timeout(10, 0, ap_list_timer, iface, NULL);
	337
	338	if (!iface->ap_list)
	339	return;
	340
	341	time(&now);
	342
6fc6879b JM	343	while (iface->ap_list) {
	344	ap = iface->ap_list->prev;
	345	if (ap->last_beacon + iface->conf->ap_table_expiration_time >=
	346	now)
	347	break;
	348
6fc6879b JM	349	ap_free_ap(iface, ap);
	350	}
	351
de9289c8	352	if (iface->olbc \|\| iface->olbc_ht) {
6fc6879b	353	int olbc = 0;
de9289c8 JM	354	int olbc_ht = 0;
de9289c8 JM	355
6fc6879b	356	ap = iface->ap_list;
de9289c8 JM	357	while (ap && (olbc == 0 \|\| olbc_ht == 0)) {
de9289c8 JM	358	if (ap_list_beacon_olbc(iface, ap))
6fc6879b	359	olbc = 1;
eb53b752	360	if (!ap->ht_support)
de9289c8	361	olbc_ht = 1;
6fc6879b JM	362	ap = ap->next;
6fc6879b JM	363	}
de9289c8	364	if (!olbc && iface->olbc) {
6fc6879b JM	365	wpa_printf(MSG_DEBUG, "OLBC not detected anymore");
6fc6879b JM	366	iface->olbc = 0;
de9289c8 JM	367	set_beacon++;
	368	}
	369	#ifdef CONFIG_IEEE80211N
	370	if (!olbc_ht && iface->olbc_ht) {
	371	wpa_printf(MSG_DEBUG, "OLBC HT not detected anymore");
	372	iface->olbc_ht = 0;
	373	hostapd_ht_operation_update(iface);
	374	set_beacon++;
6fc6879b	375	}
de9289c8	376	#endif /* CONFIG_IEEE80211N */
6fc6879b	377	}
de9289c8 JM	378
	379	if (set_beacon)
	380	ieee802_11_set_beacons(iface);
6fc6879b JM	381	}
	382
	383
	384	int ap_list_init(struct hostapd_iface *iface)
	385	{
	386	eloop_register_timeout(10, 0, ap_list_timer, iface, NULL);
	387	return 0;
	388	}
	389
	390
	391	void ap_list_deinit(struct hostapd_iface *iface)
	392	{
	393	eloop_cancel_timeout(ap_list_timer, iface, NULL);
	394	hostapd_free_aps(iface);
	395	}