mac80211: Deny TX BA session requests during disassociation
In associated state, when bringing an interface down, existing
BA sessions are torn down. When this is in progress, nothing
prevents mac80211 from accepting another BA session start request.
Use a new station flag to fix this.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 718fbcf..5538e1b 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -237,6 +237,14 @@
sdata->vif.type != NL80211_IFTYPE_AP)
return -EINVAL;
+ if (test_sta_flags(sta, WLAN_STA_DISASSOC)) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Disassociation is in progress. "
+ "Denying BA session request\n");
+#endif
+ return -EINVAL;
+ }
+
if (test_sta_flags(sta, WLAN_STA_SUSPEND)) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Suspend in progress. "