85 static inline void bss_ref_get(struct cfg80211_registered_device *rdev,  in bss_ref_get()  argument
88 	lockdep_assert_held(&rdev->bss_lock);  in bss_ref_get()
99 static inline void bss_ref_put(struct cfg80211_registered_device *rdev,  in bss_ref_put()  argument
102 	lockdep_assert_held(&rdev->bss_lock);  in bss_ref_put()
118 static bool __cfg80211_unlink_bss(struct cfg80211_registered_device *rdev,  in __cfg80211_unlink_bss()  argument
121 	lockdep_assert_held(&rdev->bss_lock);  in __cfg80211_unlink_bss()
138 	rb_erase(&bss->rbn, &rdev->bss_tree);  in __cfg80211_unlink_bss()
139 	bss_ref_put(rdev, bss);  in __cfg80211_unlink_bss()
143 static void __cfg80211_bss_expire(struct cfg80211_registered_device *rdev,  in __cfg80211_bss_expire()  argument
149 	lockdep_assert_held(&rdev->bss_lock);  in __cfg80211_bss_expire()
151 	list_for_each_entry_safe(bss, tmp, &rdev->bss_list, list) {  in __cfg80211_bss_expire()
157 		if (__cfg80211_unlink_bss(rdev, bss))  in __cfg80211_bss_expire()
162 		rdev->bss_generation++;  in __cfg80211_bss_expire()
165 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,  in ___cfg80211_scan_done()  argument
177 	if (rdev->scan_msg) {  in ___cfg80211_scan_done()
178 		nl80211_send_scan_result(rdev, rdev->scan_msg);  in ___cfg80211_scan_done()
179 		rdev->scan_msg = NULL;  in ___cfg80211_scan_done()
183 	request = rdev->scan_req;  in ___cfg80211_scan_done()
200 		spin_lock_bh(&rdev->bss_lock);  in ___cfg80211_scan_done()
201 		__cfg80211_bss_expire(rdev, request->scan_start);  in ___cfg80211_scan_done()
202 		spin_unlock_bh(&rdev->bss_lock);  in ___cfg80211_scan_done()
205 	msg = nl80211_build_scan_msg(rdev, wdev, request->aborted);  in ___cfg80211_scan_done()
218 	rdev->scan_req = NULL;  in ___cfg80211_scan_done()
222 		rdev->scan_msg = msg;  in ___cfg80211_scan_done()
224 		nl80211_send_scan_result(rdev, msg);  in ___cfg80211_scan_done()
229 	struct cfg80211_registered_device *rdev;  in __cfg80211_scan_done()  local
231 	rdev = container_of(wk, struct cfg80211_registered_device,  in __cfg80211_scan_done()
235 	___cfg80211_scan_done(rdev, true);  in __cfg80211_scan_done()
252 	struct cfg80211_registered_device *rdev;  in __cfg80211_sched_scan_results()  local
255 	rdev = container_of(wk, struct cfg80211_registered_device,  in __cfg80211_sched_scan_results()
260 	request = rtnl_dereference(rdev->sched_scan_req);  in __cfg80211_sched_scan_results()
266 			spin_lock_bh(&rdev->bss_lock);  in __cfg80211_sched_scan_results()
267 			__cfg80211_bss_expire(rdev, request->scan_start);  in __cfg80211_sched_scan_results()
268 			spin_unlock_bh(&rdev->bss_lock);  in __cfg80211_sched_scan_results()
272 		nl80211_send_sched_scan_results(rdev, request->dev);  in __cfg80211_sched_scan_results()
291 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);  in cfg80211_sched_scan_stopped_rtnl()  local
297 	__cfg80211_stop_sched_scan(rdev, true);  in cfg80211_sched_scan_stopped_rtnl()
309 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,  in __cfg80211_stop_sched_scan()  argument
317 	if (!rdev->sched_scan_req)  in __cfg80211_stop_sched_scan()
320 	sched_scan_req = rtnl_dereference(rdev->sched_scan_req);  in __cfg80211_stop_sched_scan()
324 		int err = rdev_sched_scan_stop(rdev, dev);  in __cfg80211_stop_sched_scan()
329 	nl80211_send_sched_scan(rdev, dev, NL80211_CMD_SCHED_SCAN_STOPPED);  in __cfg80211_stop_sched_scan()
331 	RCU_INIT_POINTER(rdev->sched_scan_req, NULL);  in __cfg80211_stop_sched_scan()
337 void cfg80211_bss_age(struct cfg80211_registered_device *rdev,  in cfg80211_bss_age()  argument
343 	spin_lock_bh(&rdev->bss_lock);  in cfg80211_bss_age()
344 	list_for_each_entry(bss, &rdev->bss_list, list)  in cfg80211_bss_age()
346 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_bss_age()
349 void cfg80211_bss_expire(struct cfg80211_registered_device *rdev)  in cfg80211_bss_expire()  argument
351 	__cfg80211_bss_expire(rdev, jiffies - IEEE80211_SCAN_RESULT_EXPIRE);  in cfg80211_bss_expire()
588 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);  in cfg80211_get_bss()  local
596 	spin_lock_bh(&rdev->bss_lock);  in cfg80211_get_bss()
598 	list_for_each_entry(bss, &rdev->bss_list, list) {  in cfg80211_get_bss()
617 			bss_ref_get(rdev, res);  in cfg80211_get_bss()
622 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_get_bss()
630 static void rb_insert_bss(struct cfg80211_registered_device *rdev,  in rb_insert_bss()  argument
633 	struct rb_node **p = &rdev->bss_tree.rb_node;  in rb_insert_bss()
656 	rb_insert_color(&bss->rbn, &rdev->bss_tree);  in rb_insert_bss()
660 rb_find_bss(struct cfg80211_registered_device *rdev,  in rb_find_bss()  argument
664 	struct rb_node *n = rdev->bss_tree.rb_node;  in rb_find_bss()
683 static bool cfg80211_combine_bsses(struct cfg80211_registered_device *rdev,  in cfg80211_combine_bsses()  argument
713 	list_for_each_entry(bss, &rdev->bss_list, list) {  in cfg80211_combine_bsses()
747 cfg80211_bss_update(struct cfg80211_registered_device *rdev,  in cfg80211_bss_update()  argument
758 	spin_lock_bh(&rdev->bss_lock);  in cfg80211_bss_update()
761 		spin_unlock_bh(&rdev->bss_lock);  in cfg80211_bss_update()
765 	found = rb_find_bss(rdev, tmp, BSS_CMP_REGULAR);  in cfg80211_bss_update()
852 		new = kzalloc(sizeof(*new) + rdev->wiphy.bss_priv_size,  in cfg80211_bss_update()
868 			hidden = rb_find_bss(rdev, tmp, BSS_CMP_HIDE_ZLEN);  in cfg80211_bss_update()
870 				hidden = rb_find_bss(rdev, tmp,  in cfg80211_bss_update()
887 			if (!cfg80211_combine_bsses(rdev, new)) {  in cfg80211_bss_update()
893 		list_add_tail(&new->list, &rdev->bss_list);  in cfg80211_bss_update()
894 		rb_insert_bss(rdev, new);  in cfg80211_bss_update()
898 	rdev->bss_generation++;  in cfg80211_bss_update()
899 	bss_ref_get(rdev, found);  in cfg80211_bss_update()
900 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_bss_update()
904 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_bss_update()
1109 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);  in cfg80211_ref_bss()  local
1117 	spin_lock_bh(&rdev->bss_lock);  in cfg80211_ref_bss()
1118 	bss_ref_get(rdev, bss);  in cfg80211_ref_bss()
1119 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_ref_bss()
1125 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);  in cfg80211_put_bss()  local
1133 	spin_lock_bh(&rdev->bss_lock);  in cfg80211_put_bss()
1134 	bss_ref_put(rdev, bss);  in cfg80211_put_bss()
1135 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_put_bss()
1141 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);  in cfg80211_unlink_bss()  local
1149 	spin_lock_bh(&rdev->bss_lock);  in cfg80211_unlink_bss()
1151 		if (__cfg80211_unlink_bss(rdev, bss))  in cfg80211_unlink_bss()
1152 			rdev->bss_generation++;  in cfg80211_unlink_bss()
1154 	spin_unlock_bh(&rdev->bss_lock);  in cfg80211_unlink_bss()
1162 	struct cfg80211_registered_device *rdev;  in cfg80211_get_dev_from_ifindex()  local
1171 		rdev = wiphy_to_rdev(dev->ieee80211_ptr->wiphy);  in cfg80211_get_dev_from_ifindex()
1173 		rdev = ERR_PTR(-ENODEV);  in cfg80211_get_dev_from_ifindex()
1175 	return rdev;  in cfg80211_get_dev_from_ifindex()
1182 	struct cfg80211_registered_device *rdev;  in cfg80211_wext_siwscan()  local
1195 	rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);  in cfg80211_wext_siwscan()
1197 	if (IS_ERR(rdev))  in cfg80211_wext_siwscan()
1198 		return PTR_ERR(rdev);  in cfg80211_wext_siwscan()
1200 	if (rdev->scan_req || rdev->scan_msg) {  in cfg80211_wext_siwscan()
1205 	wiphy = &rdev->wiphy;  in cfg80211_wext_siwscan()
1295 	rdev->scan_req = creq;  in cfg80211_wext_siwscan()
1296 	err = rdev_scan(rdev, creq);  in cfg80211_wext_siwscan()
1298 		rdev->scan_req = NULL;  in cfg80211_wext_siwscan()
1301 		nl80211_send_scan_start(rdev, dev->ieee80211_ptr);  in cfg80211_wext_siwscan()
1619 static int ieee80211_scan_results(struct cfg80211_registered_device *rdev,  in ieee80211_scan_results()  argument
1628 	spin_lock_bh(&rdev->bss_lock);  in ieee80211_scan_results()
1629 	cfg80211_bss_expire(rdev);  in ieee80211_scan_results()
1631 	list_for_each_entry(bss, &rdev->bss_list, list) {  in ieee80211_scan_results()
1636 		current_ev = ieee80211_bss(&rdev->wiphy, info, bss,  in ieee80211_scan_results()
1643 	spin_unlock_bh(&rdev->bss_lock);  in ieee80211_scan_results()
1655 	struct cfg80211_registered_device *rdev;  in cfg80211_wext_giwscan()  local
1661 	rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);  in cfg80211_wext_giwscan()
1663 	if (IS_ERR(rdev))  in cfg80211_wext_giwscan()
1664 		return PTR_ERR(rdev);  in cfg80211_wext_giwscan()
1666 	if (rdev->scan_req || rdev->scan_msg)  in cfg80211_wext_giwscan()
1669 	res = ieee80211_scan_results(rdev, info, extra, data->length);  in cfg80211_wext_giwscan()