net/mac80211/key.c

57 update_vlan_tailroom_need_count(struct ieee80211_sub_if_data *sdata, int delta)
61 	if (sdata->vif.type != NL80211_IFTYPE_AP)
65 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
69 	list_for_each_entry_rcu(vlan, &sdata->u.ap.vlans, u.vlan.list)
75 static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
96 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
98 	update_vlan_tailroom_need_count(sdata, 1);
100 	if (!sdata->crypto_tx_tailroom_needed_cnt++) {
109 static void decrease_tailroom_need_count(struct ieee80211_sub_if_data *sdata,
112 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
114 	WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt < delta);
116 	update_vlan_tailroom_need_count(sdata, -delta);
117 	sdata->crypto_tx_tailroom_needed_cnt -= delta;
122 	struct ieee80211_sub_if_data *sdata = key->sdata;
141 			increment_tailroom_need_count(sdata);
163 	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
174 	if (key->conf.link_id >= 0 && sdata->vif.active_links &&
175 	    !(sdata->vif.active_links & BIT(key->conf.link_id)))
178 	ret = drv_set_key(key->local, SET_KEY, sdata,
187 			decrease_tailroom_need_count(sdata, 1);
199 		sdata_err(sdata,
230 	struct ieee80211_sub_if_data *sdata;
243 	sdata = key->sdata;
247 	if (key->conf.link_id >= 0 && sdata->vif.active_links &&
248 	    !(sdata->vif.active_links & BIT(key->conf.link_id)))
254 		increment_tailroom_need_count(sdata);
257 	ret = drv_set_key(key->local, DISABLE_KEY, sdata,
261 		sdata_err(sdata,
342 			ieee80211_flush_queues(local, old->sdata, false);
350 	struct ieee80211_sub_if_data *sdata = link->sdata;
353 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
356 		key = wiphy_dereference(sdata->local->hw.wiphy,
357 					sdata->keys[idx]);
359 			key = wiphy_dereference(sdata->local->hw.wiphy,
364 		rcu_assign_pointer(sdata->default_unicast_key, key);
365 		ieee80211_check_fast_xmit_iface(sdata);
366 		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
367 			drv_set_default_unicast_key(sdata->local, sdata, idx);
373 	ieee80211_debugfs_key_update_default(sdata);
379 	lockdep_assert_wiphy(link->sdata->local->hw.wiphy);
387 	struct ieee80211_sub_if_data *sdata = link->sdata;
390 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
394 		key = wiphy_dereference(sdata->local->hw.wiphy,
399 	ieee80211_debugfs_key_update_default(sdata);
405 	lockdep_assert_wiphy(link->sdata->local->hw.wiphy);
413 	struct ieee80211_sub_if_data *sdata = link->sdata;
416 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
421 		key = wiphy_dereference(sdata->local->hw.wiphy,
426 	ieee80211_debugfs_key_update_default(sdata);
432 	lockdep_assert_wiphy(link->sdata->local->hw.wiphy);
437 static int ieee80211_key_replace(struct ieee80211_sub_if_data *sdata,
451 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
476 			link = sdata_dereference(sdata->link[link_id], sdata);
488 		link = &sdata->deflink;
521 		list_add_tail_rcu(&new->list, &sdata->key_list);
540 			old == wiphy_dereference(sdata->local->hw.wiphy,
541 						 sdata->default_unicast_key);
543 			old == wiphy_dereference(sdata->local->hw.wiphy,
546 			old == wiphy_dereference(sdata->local->hw.wiphy,
549 			old == wiphy_dereference(sdata->local->hw.wiphy,
562 			rcu_assign_pointer(sdata->keys[idx], new);
767 		struct ieee80211_sub_if_data *sdata = key->sdata;
773 			sdata->crypto_tx_tailroom_pending_dec++;
774 			wiphy_delayed_work_queue(sdata->local->hw.wiphy,
775 						 &sdata->dec_tailroom_needed_wk,
778 			decrease_tailroom_need_count(sdata, 1);
805 	WARN_ON(key->sdata || key->local);
809 static bool ieee80211_key_identical(struct ieee80211_sub_if_data *sdata,
827 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
846 	struct ieee80211_sub_if_data *sdata = link->sdata;
856 	bool delay_tailroom = sdata->vif.type == NL80211_IFTYPE_STATION;
859 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
864 		old_key = wiphy_dereference(sdata->local->hw.wiphy,
866 		alt_key = wiphy_dereference(sdata->local->hw.wiphy,
890 		old_key = wiphy_dereference(sdata->local->hw.wiphy,
894 			old_key = wiphy_dereference(sdata->local->hw.wiphy,
895 						    sdata->keys[idx]);
897 			old_key = wiphy_dereference(sdata->local->hw.wiphy,
913 	if (ieee80211_key_identical(sdata, old_key, key)) {
918 	key->local = sdata->local;
919 	key->sdata = sdata;
932 	increment_tailroom_need_count(sdata);
934 	ret = ieee80211_key_replace(sdata, link, sta, pairwise, old_key, key);
958 	if (key->sdata)
959 		ieee80211_key_replace(key->sdata, NULL, key->sta,
965 void ieee80211_reenable_keys(struct ieee80211_sub_if_data *sdata)
970 	lockdep_assert_wiphy(sdata->local->hw.wiphy);
972 	sdata->crypto_tx_tailroom_needed_cnt = 0;
973 	sdata->crypto_tx_tailroom_pending_dec = 0;
975 	if (sdata->vif.type == NL80211_IFTYPE_AP) {
976 		list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
982 	if (ieee80211_sdata_running(sdata)) {
983 		list_for_each_entry(key, &sdata->key_list, list) {
984 			increment_tailroom_need_count(sdata);
1001 	struct ieee80211_sub_if_data *sdata;
1006 		sdata = vif_to_sdata(vif);
1007 		list_for_each_entry_safe(key, tmp, &sdata->key_list, list)
1008 			iter(hw, &sdata->vif,
1012 		list_for_each_entry(sdata, &local->interfaces, list)
1014 						 &sdata->key_list, list)
1015 				iter(hw, &sdata->vif,
1024 			 struct ieee80211_sub_if_data *sdata,
1034 	list_for_each_entry_rcu(key, &sdata->key_list, list) {
1041 		iter(hw, &sdata->vif,
1057 	struct ieee80211_sub_if_data *sdata;
1060 		sdata = vif_to_sdata(vif);
1061 		_ieee80211_iter_keys_rcu(hw, sdata, iter, iter_data);
1063 		list_for_each_entry_rcu(sdata, &local->interfaces, list)
1064 			_ieee80211_iter_keys_rcu(hw, sdata, iter, iter_data);
1069 static void ieee80211_free_keys_iface(struct ieee80211_sub_if_data *sdata,
1074 	decrease_tailroom_need_count(sdata,
1075 				     sdata->crypto_tx_tailroom_pending_dec);
1076 	sdata->crypto_tx_tailroom_pending_dec = 0;
1078 	ieee80211_debugfs_key_remove_mgmt_default(sdata);
1079 	ieee80211_debugfs_key_remove_beacon_default(sdata);
1081 	list_for_each_entry_safe(key, tmp, &sdata->key_list, list) {
1082 		ieee80211_key_replace(key->sdata, NULL, key->sta,
1088 	ieee80211_debugfs_key_update_default(sdata);
1094 	struct ieee80211_sub_if_data *sdata = link->sdata;
1095 	struct ieee80211_local *local = sdata->local;
1100 	list_for_each_entry_safe(key, tmp, &sdata->key_list, list) {
1103 		ieee80211_key_replace(key->sdata, link, key->sta,
1121 void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata,
1124 	struct ieee80211_local *local = sdata->local;
1131 				  &sdata->dec_tailroom_needed_wk);
1135 	ieee80211_free_keys_iface(sdata, &keys);
1137 	if (sdata->vif.type == NL80211_IFTYPE_AP) {
1138 		list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1147 	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
1148 		if (sdata->bss) {
1149 			master = container_of(sdata->bss,
1153 			WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=
1157 		WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt ||
1158 			     sdata->crypto_tx_tailroom_pending_dec);
1161 	if (sdata->vif.type == NL80211_IFTYPE_AP) {
1162 		list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1180 		ieee80211_key_replace(key->sdata, NULL, key->sta,
1183 		__ieee80211_key_destroy(key, key->sdata->vif.type ==
1191 		ieee80211_key_replace(key->sdata, NULL, key->sta,
1194 		__ieee80211_key_destroy(key, key->sdata->vif.type ==
1202 	struct ieee80211_sub_if_data *sdata;
1204 	sdata = container_of(wk, struct ieee80211_sub_if_data,
1223 	decrease_tailroom_need_count(sdata,
1224 				     sdata->crypto_tx_tailroom_pending_dec);
1225 	sdata->crypto_tx_tailroom_pending_dec = 0;
1231 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1233 	trace_api_gtk_rekey_notify(sdata, bssid, replay_ctr);
1235 	cfg80211_gtk_rekey_notify(sdata->dev, bssid, replay_ctr, gfp);
1366 			increment_tailroom_need_count(key->sdata);
1378 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1379 	struct ieee80211_local *local = sdata->local;
1383 		link_id < 0 ? &sdata->deflink :
1384 		sdata_dereference(sdata->link[link_id], sdata);
1401 	if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
1463 int ieee80211_key_switch_links(struct ieee80211_sub_if_data *sdata,
1470 	list_for_each_entry(key, &sdata->key_list, list) {
1481 	list_for_each_entry(key, &sdata->key_list, list) {