X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=net%2Fmac80211%2Fmlme.c;h=aca22b00b6a327873ee5ffc5a443ae541fdab5ed;hb=d2aa4550379f92e929af7ed1dd4f55e6a1e331f8;hp=d779c57a82203b23194772565d4e6ba2ed172406;hpb=3f27c0d2a469673e0f1efc8004b6f42428aa5b94;p=linux-block.git

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index d779c57a8220..aca22b00b6a3 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1102,14 +1102,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	struct sta_info *sta;
 	u32 changed = 0, config_changed = 0;
 
-	rcu_read_lock();
-
-	sta = sta_info_get(local, ifmgd->bssid);
-	if (!sta) {
-		rcu_read_unlock();
-		return;
-	}
-
 	if (deauth) {
 		ifmgd->direct_probe_tries = 0;
 		ifmgd->auth_tries = 0;
@@ -1120,7 +1112,11 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	netif_tx_stop_all_queues(sdata->dev);
 	netif_carrier_off(sdata->dev);
 
-	ieee80211_sta_tear_down_BA_sessions(sta);
+	rcu_read_lock();
+	sta = sta_info_get(local, ifmgd->bssid);
+	if (sta)
+		ieee80211_sta_tear_down_BA_sessions(sta);
+	rcu_read_unlock();
 
 	bss = ieee80211_rx_bss_get(local, ifmgd->bssid,
 				   conf->channel->center_freq,
@@ -1156,8 +1152,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 				ifmgd->ssid, ifmgd->ssid_len);
 	}
 
-	rcu_read_unlock();
-
 	ieee80211_set_wmm_default(sdata);
 
 	ieee80211_recalc_idle(local);
@@ -2223,7 +2217,10 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata)
 				       capa_mask, capa_val);
 
 	if (bss) {
-		ieee80211_set_freq(sdata, bss->cbss.channel->center_freq);
+		local->oper_channel = bss->cbss.channel;
+		local->oper_channel_type = NL80211_CHAN_NO_HT;
+		ieee80211_hw_config(local, 0);
+
 		if (!(ifmgd->flags & IEEE80211_STA_SSID_SET))
 			ieee80211_sta_set_ssid(sdata, bss->ssid,
 					       bss->ssid_len);
@@ -2445,6 +2442,14 @@ void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata)
 			ieee80211_set_disassoc(sdata, true, true,
 					       WLAN_REASON_DEAUTH_LEAVING);
 
+		if (ifmgd->ssid_len == 0) {
+			/*
+			 * Only allow association to be started if a valid SSID
+			 * is configured.
+			 */
+			return;
+		}
+
 		if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) ||
 		    ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE)
 			set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request);
@@ -2476,6 +2481,10 @@ int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size
 	ifmgd = &sdata->u.mgd;
 
 	if (ifmgd->ssid_len != len || memcmp(ifmgd->ssid, ssid, len) != 0) {
+		if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)
+			ieee80211_set_disassoc(sdata, true, true,
+					       WLAN_REASON_DEAUTH_LEAVING);
+
 		/*
 		 * Do not use reassociation if SSID is changed (different ESS).
 		 */
@@ -2500,6 +2509,11 @@ int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
+	if (compare_ether_addr(bssid, ifmgd->bssid) != 0 &&
+	    ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)
+		ieee80211_set_disassoc(sdata, true, true,
+				       WLAN_REASON_DEAUTH_LEAVING);
+
 	if (is_valid_ether_addr(bssid)) {
 		memcpy(ifmgd->bssid, bssid, ETH_ALEN);
 		ifmgd->flags |= IEEE80211_STA_BSSID_SET;