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>
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index f0e84bc..a48bad4 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -227,7 +227,7 @@
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 @@
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 @@
__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,