src/ap/ap_list.c

32 static int ap_list_beacon_olbc(struct hostapd_iface *iface, struct ap_info *ap)
37 	    iface->conf->channel != ap->channel)
40 	if (ap->erp != -1 && (ap->erp & ERP_INFO_NON_ERP_PRESENT))
44 		int rate = (ap->supported_rates[i] & 0x7f) * 5;
53 struct ap_info * ap_get_ap(struct hostapd_iface *iface, const u8 *ap)
57 	s = iface->ap_hash[STA_HASH(ap)];
58 	while (s != NULL && os_memcmp(s->addr, ap, ETH_ALEN) != 0)
64 static void ap_ap_list_add(struct hostapd_iface *iface, struct ap_info *ap)
67 		ap->prev = iface->ap_list->prev;
68 		iface->ap_list->prev = ap;
70 		ap->prev = ap;
71 	ap->next = iface->ap_list;
72 	iface->ap_list = ap;
76 static void ap_ap_list_del(struct hostapd_iface *iface, struct ap_info *ap)
78 	if (iface->ap_list == ap)
79 		iface->ap_list = ap->next;
81 		ap->prev->next = ap->next;
83 	if (ap->next)
84 		ap->next->prev = ap->prev;
86 		iface->ap_list->prev = ap->prev;
91 				struct ap_info *ap)
94 		ap->iter_prev = iface->ap_iter_list->iter_prev;
95 		iface->ap_iter_list->iter_prev = ap;
97 		ap->iter_prev = ap;
98 	ap->iter_next = iface->ap_iter_list;
99 	iface->ap_iter_list = ap;
104 				struct ap_info *ap)
106 	if (iface->ap_iter_list == ap)
107 		iface->ap_iter_list = ap->iter_next;
109 		ap->iter_prev->iter_next = ap->iter_next;
111 	if (ap->iter_next)
112 		ap->iter_next->iter_prev = ap->iter_prev;
114 		iface->ap_iter_list->iter_prev = ap->iter_prev;
118 static void ap_ap_hash_add(struct hostapd_iface *iface, struct ap_info *ap)
120 	ap->hnext = iface->ap_hash[STA_HASH(ap->addr)];
121 	iface->ap_hash[STA_HASH(ap->addr)] = ap;
125 static void ap_ap_hash_del(struct hostapd_iface *iface, struct ap_info *ap)
129 	s = iface->ap_hash[STA_HASH(ap->addr)];
131 	if (os_memcmp(s->addr, ap->addr, ETH_ALEN) == 0) {
132 		iface->ap_hash[STA_HASH(ap->addr)] = s->hnext;
137 	       os_memcmp(s->hnext->addr, ap->addr, ETH_ALEN) != 0)
143 		       MAC2STR(ap->addr));
147 static void ap_free_ap(struct hostapd_iface *iface, struct ap_info *ap)
149 	ap_ap_hash_del(iface, ap);
150 	ap_ap_list_del(iface, ap);
151 	ap_ap_iter_list_del(iface, ap);
154 	os_free(ap);
160 	struct ap_info *ap, *prev;
162 	ap = iface->ap_list;
164 	while (ap) {
165 		prev = ap;
166 		ap = ap->next;
195 	struct ap_info *ap;
197 	ap = os_zalloc(sizeof(struct ap_info));
198 	if (ap == NULL)
202 	os_memcpy(ap->addr, addr, ETH_ALEN);
203 	ap_ap_list_add(iface, ap);
205 	ap_ap_hash_add(iface, ap);
206 	ap_ap_iter_list_add(iface, ap);
208 	if (iface->num_ap > iface->conf->ap_table_max_size && ap != ap->prev) {
210 			   MACSTR " from AP table", MAC2STR(ap->prev->addr));
211 		ap_free_ap(iface, ap->prev);
214 	return ap;
223 	struct ap_info *ap;
232 	ap = ap_get_ap(iface, mgmt->bssid);
233 	if (!ap) {
234 		ap = ap_ap_add(iface, mgmt->bssid);
235 		if (!ap) {
242 	ap->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
243 	ap->capability = le_to_host16(mgmt->u.beacon.capab_info);
247 		if (len >= sizeof(ap->ssid))
248 			len = sizeof(ap->ssid) - 1;
249 		os_memcpy(ap->ssid, elems->ssid, len);
250 		ap->ssid[len] = '\0';
251 		ap->ssid_len = len;
254 	merge_byte_arrays(ap->supported_rates, WLAN_SUPP_RATES_MAX,
258 	ap->wpa = elems->wpa_ie != NULL;
261 		ap->erp = elems->erp_info[0];
263 		ap->erp = -1;
266 		ap->channel = elems->ds_params[0];
268 		ap->channel = fi->channel;
271 		ap->ht_support = 1;
273 		ap->ht_support = 0;
275 	ap->num_beacons++;
277 	ap->last_beacon = now.sec;
279 		ap->datarate = fi->datarate;
281 	if (!new_ap && ap != iface->ap_list) {
284 		ap_ap_list_del(iface, ap);
285 		ap_ap_list_add(iface, ap);
289 	    ap_list_beacon_olbc(iface, ap)) {
292 			   "protection", MAC2STR(ap->addr));
297 	if (!iface->olbc_ht && !ap->ht_support) {
301 			   " - enable protection", MAC2STR(ap->addr));
315 	struct ap_info *ap;
326 		ap = iface->ap_list->prev;
327 		if (ap->last_beacon + iface->conf->ap_table_expiration_time >=
331 		ap_free_ap(iface, ap);
338 		ap = iface->ap_list;
339 		while (ap && (olbc == 0 || olbc_ht == 0)) {
340 			if (ap_list_beacon_olbc(iface, ap))
342 			if (!ap->ht_support)
344 			ap = ap->next;