25 void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,  in wpa_bss_remove()  argument
28 	if (wpa_s->last_scan_res) {  in wpa_bss_remove()
30 		for (i = 0; i < wpa_s->last_scan_res_used; i++) {  in wpa_bss_remove()
31 			if (wpa_s->last_scan_res[i] == bss) {  in wpa_bss_remove()
32 				os_memmove(&wpa_s->last_scan_res[i],  in wpa_bss_remove()
33 					   &wpa_s->last_scan_res[i + 1],  in wpa_bss_remove()
34 					   (wpa_s->last_scan_res_used - i - 1)  in wpa_bss_remove()
36 				wpa_s->last_scan_res_used--;  in wpa_bss_remove()
43 	wpa_s->num_bss--;  in wpa_bss_remove()
44 	wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Remove id %u BSSID " MACSTR  in wpa_bss_remove()
59 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,  in wpa_bss_get()  argument
63 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {  in wpa_bss_get()
108 static int wpa_bss_known(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)  in wpa_bss_known()  argument
121 static int wpa_bss_in_use(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)  in wpa_bss_in_use()  argument
123 	if (bss == wpa_s->current_bss)  in wpa_bss_in_use()
127 	if (wpa_s->current_bss &&  in wpa_bss_in_use()
128 	    (bss->ssid_len != wpa_s->current_bss->ssid_len ||  in wpa_bss_in_use()
129 	     os_memcmp(bss->ssid, wpa_s->current_bss->ssid,  in wpa_bss_in_use()
133 	return !is_zero_ether_addr(bss->bssid) && wpa_s->current_bss->bssid &&  in wpa_bss_in_use()
134 		(os_memcmp(bss->bssid, wpa_s->current_bss->bssid, ETH_ALEN) == 0);  in wpa_bss_in_use()
140 static int wpa_bss_remove_oldest_unknown(struct wpa_supplicant *wpa_s)  in wpa_bss_remove_oldest_unknown()  argument
144 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {  in wpa_bss_remove_oldest_unknown()
145 		if (!wpa_bss_known(wpa_s, bss)) {  in wpa_bss_remove_oldest_unknown()
146 			wpa_bss_remove(wpa_s, bss, __func__);  in wpa_bss_remove_oldest_unknown()
154 static int wpa_bss_remove_oldest(struct wpa_supplicant *wpa_s)  in wpa_bss_remove_oldest()  argument
162 	if (wpa_bss_remove_oldest_unknown(wpa_s) == 0)  in wpa_bss_remove_oldest()
168 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {  in wpa_bss_remove_oldest()
169 		if (!wpa_bss_in_use(wpa_s, bss)) {  in wpa_bss_remove_oldest()
170 			wpa_bss_remove(wpa_s, bss, __func__);  in wpa_bss_remove_oldest()
178 static struct wpa_bss * wpa_bss_add(struct wpa_supplicant *wpa_s,  in wpa_bss_add()  argument
185 	if ((wpa_s->num_bss + 1 > MAX_BSS_COUNT) &&  in wpa_bss_add()
186 	    (wpa_bss_remove_oldest(wpa_s) < 0)) {  in wpa_bss_add()
195 	bss->id = wpa_s->bss_next_id++;  in wpa_bss_add()
196 	bss->last_update_idx = wpa_s->bss_update_idx;  in wpa_bss_add()
204 	dl_list_add_tail(&wpa_s->bss, &bss->list);  in wpa_bss_add()
205 	dl_list_add_tail(&wpa_s->bss_id, &bss->list_id);  in wpa_bss_add()
206 	wpa_s->num_bss++;  in wpa_bss_add()
207 	wpa_dbg(wpa_s, MSG_INFO, "BSS: Add new id %u BSSID " MACSTR  in wpa_bss_add()
215 wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,  in wpa_bss_update()  argument
218 	if (bss->last_update_idx == wpa_s->bss_update_idx) {  in wpa_bss_update()
236 	bss->last_update_idx = wpa_s->bss_update_idx;  in wpa_bss_update()
253 			for (i = 0; i < wpa_s->last_scan_res_used; i++) {  in wpa_bss_update()
254 				if (wpa_s->last_scan_res[i] == bss) {  in wpa_bss_update()
255 					wpa_s->last_scan_res[i] = nbss;  in wpa_bss_update()
259 			if (wpa_s->current_bss == bss)  in wpa_bss_update()
260 				wpa_s->current_bss = nbss;  in wpa_bss_update()
269 	dl_list_add_tail(&wpa_s->bss, &bss->list);  in wpa_bss_update()
284 void wpa_bss_update_start(struct wpa_supplicant *wpa_s)  in wpa_bss_update_start()  argument
286 	wpa_s->bss_update_idx++;  in wpa_bss_update_start()
287 	wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Start scan result update %u",  in wpa_bss_update_start()
288 		wpa_s->bss_update_idx);  in wpa_bss_update_start()
289 	wpa_s->last_scan_res_used = 0;  in wpa_bss_update_start()
303 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s,  in wpa_bss_update_scan_res()  argument
312 		wpa_dbg(wpa_s, MSG_DEBUG, "BSS: No SSID IE included for "  in wpa_bss_update_scan_res()
317 		wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Too long SSID IE included for "  in wpa_bss_update_scan_res()
325 	bss = wpa_bss_get(wpa_s, res->bssid, ssid + 2, ssid[1]);  in wpa_bss_update_scan_res()
327 		bss = wpa_bss_add(wpa_s, ssid + 2, ssid[1], res, fetch_time);  in wpa_bss_update_scan_res()
329 		bss = wpa_bss_update(wpa_s, bss, res, fetch_time);  in wpa_bss_update_scan_res()
330 		if (wpa_s->last_scan_res) {  in wpa_bss_update_scan_res()
332 			for (i = 0; i < wpa_s->last_scan_res_used; i++) {  in wpa_bss_update_scan_res()
333 				if (bss == wpa_s->last_scan_res[i]) {  in wpa_bss_update_scan_res()
343 	if (wpa_s->last_scan_res_used >= wpa_s->last_scan_res_size) {  in wpa_bss_update_scan_res()
346 		if (wpa_s->last_scan_res_size == 0)  in wpa_bss_update_scan_res()
349 			siz = wpa_s->last_scan_res_size * 2;  in wpa_bss_update_scan_res()
350 		n = os_realloc_array(wpa_s->last_scan_res, siz,  in wpa_bss_update_scan_res()
354 		wpa_s->last_scan_res = n;  in wpa_bss_update_scan_res()
355 		wpa_s->last_scan_res_size = siz;  in wpa_bss_update_scan_res()
358 	if (wpa_s->last_scan_res)  in wpa_bss_update_scan_res()
359 		wpa_s->last_scan_res[wpa_s->last_scan_res_used++] = bss;  in wpa_bss_update_scan_res()
373 void wpa_bss_update_end(struct wpa_supplicant *wpa_s)  in wpa_bss_update_end()  argument
375 	os_get_reltime(&wpa_s->last_scan);  in wpa_bss_update_end()
386 int wpa_bss_init(struct wpa_supplicant *wpa_s)  in wpa_bss_init()  argument
388 	dl_list_init(&wpa_s->bss);  in wpa_bss_init()
389 	dl_list_init(&wpa_s->bss_id);  in wpa_bss_init()
398 void wpa_bss_flush(struct wpa_supplicant *wpa_s)  in wpa_bss_flush()  argument
402 	if (wpa_s->bss.next == NULL)  in wpa_bss_flush()
405 	dl_list_for_each_safe(bss, n, &wpa_s->bss, struct wpa_bss, list) {  in wpa_bss_flush()
406 		if (wpa_bss_in_use(wpa_s, bss))  in wpa_bss_flush()
408 		wpa_bss_remove(wpa_s, bss, __func__);  in wpa_bss_flush()
417 void wpa_bss_deinit(struct wpa_supplicant *wpa_s)  in wpa_bss_deinit()  argument
419 	wpa_bss_flush(wpa_s);  in wpa_bss_deinit()
429 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,  in wpa_bss_get_bssid()  argument
433 	dl_list_for_each_reverse(bss, &wpa_s->bss, struct wpa_bss, list) {  in wpa_bss_get_bssid()
447 struct wpa_bss * wpa_bss_get_next_bss(struct wpa_supplicant *wpa_s,  in wpa_bss_get_next_bss()  argument
453 		return dl_list_first(&wpa_s->bss, struct wpa_bss, list);  in wpa_bss_get_next_bss()
454 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {  in wpa_bss_get_next_bss()