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authorMichal Kazior <michal.kazior@tieto.com>2014-09-02 14:05:10 +0200
committerJohannes Berg <johannes.berg@intel.com>2014-09-03 13:40:38 +0200
commit4549cf2b1803d29cfd019f7bfeaa784f8f9c558f (patch)
treebf39255e299b752cea30ce8437b9a685b189e5d4 /net/mac80211/agg-rx.c
parentd0616613d9cf17919fbd46fa0274db4b0084ad62 (diff)
downloadlinux-4549cf2b1803d29cfd019f7bfeaa784f8f9c558f.tar.bz2
mac80211: fix offloaded BA session traffic after hw restart
When starting an offloaded BA session it is unknown what starting sequence number should be used. Using last_seq worked in most cases except after hw restart. When hw restart is requested last_seq is (rightfully so) kept unmodified. This ended up with BA sessions being restarted with an aribtrary BA window values resulting in dropped frames until sequence numbers caught up. Instead of last_seq pick seqno of a first Rxed frame of a given BA session. This fixes stalled traffic after hw restart with offloaded BA sessions (currently only ath10k). Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/agg-rx.c')
-rw-r--r--net/mac80211/agg-rx.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index f0e84bc48038..a48bad468880 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -227,7 +227,7 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d
void __ieee80211_start_rx_ba_session(struct sta_info *sta,
u8 dialog_token, u16 timeout,
u16 start_seq_num, u16 ba_policy, u16 tid,
- u16 buf_size, bool tx)
+ u16 buf_size, bool tx, bool auto_seq)
{
struct ieee80211_local *local = sta->sdata->local;
struct tid_ampdu_rx *tid_agg_rx;
@@ -326,6 +326,7 @@ void __ieee80211_start_rx_ba_session(struct sta_info *sta,
tid_agg_rx->buf_size = buf_size;
tid_agg_rx->timeout = timeout;
tid_agg_rx->stored_mpdu_num = 0;
+ tid_agg_rx->auto_seq = auto_seq;
status = WLAN_STATUS_SUCCESS;
/* activate it for RX */
@@ -367,7 +368,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
__ieee80211_start_rx_ba_session(sta, dialog_token, timeout,
start_seq_num, ba_policy, tid,
- buf_size, true);
+ buf_size, true, false);
}
void ieee80211_start_rx_ba_session_offl(struct ieee80211_vif *vif,