Commit 15b4d843 authored Jun 23, 2011 by Arik Nemtsov Committed by John W. Linville Jun 27, 2011

mac80211: reestablish mis-configured existing Rx BA sessions



When forming a Rx BA session, sometimes the ADDBA response gets lost.
This leads to a situation where the session is configured locally, but
doesn't exist on the remote side. Subsequent ADDBA requests are declined
by mac80211.

Fix this by assuming the session state of the initiator is the correct
one. When receiving an unexpected ADDBA request on a TID with an active
Rx BA session, delete the existing one and establish a new session.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent daf4ce85

net/mac80211/agg-rx.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -262,7 +262,11 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
		"%pM on tid %u\n",
		mgmt->sa, tid);
		#endif /* CONFIG_MAC80211_HT_DEBUG */
		goto end;

		/* delete existing Rx BA session on the same tid */
		___ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
		WLAN_STATUS_UNSPECIFIED_QOS,
		false);
		}

		/* prepare A-MPDU MLME for Rx aggregation */