iwlwifi: mvm: quietly accept non-sta disassoc frames

When a station that's not associated sends a data frame (e.g. an NDP)
hostapd will respond with a disassoc frame, telling it that it's not
associated. The station might also not be authenticated, in which case
there will not be a station entry for it, and as a result we need to
accept such frames without a station.

Fixes: 3ee0f0e2 ("iwlwifi: mvm: fix DQA AP mode station assumption")
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/tx.c

@@ -568,9 +568,12 @@ static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm,
 		 * station that we don't have, or similarly an association
 		 * response (with non-success status) for a station we can't
 		 * accept.
+		 * Also, disassociate frames might happen, particular with
+		 * reason 7 ("Class 3 frame received from nonassociated STA").
 		 */
 		if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc) ||
-		    ieee80211_is_deauth(fc) || ieee80211_is_assoc_resp(fc))
+		    ieee80211_is_deauth(fc) || ieee80211_is_assoc_resp(fc) ||
+		    ieee80211_is_disassoc(fc))
 			return mvm->probe_queue;
 		if (info->hw_queue == info->control.vif->cab_queue)
 			return mvmvif->cab_queue;