diff options
| author | Nikolay Martynov <mar.kolya@gmail.com> | 2011-11-21 17:32:06 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-11-28 14:36:22 -0500 |
| commit | 4eb287a4048e4a2cb0400a6d972d97739ec8c799 (patch) | |
| tree | 56b41c9627152aee4ce75354508a96f7257e72bf /drivers/net/wireless/ath | |
| parent | f724828bd3db7e0fe6f17ed8de2656bfbfed5c4e (diff) | |
| download | blackbird-obmc-linux-4eb287a4048e4a2cb0400a6d972d97739ec8c799.tar.gz blackbird-obmc-linux-4eb287a4048e4a2cb0400a6d972d97739ec8c799.zip | |
ath9k: improve ath_tx_aggr_stop to avoid TID stuck in cleanup state
When tx agg is being stopped TID is flushed using ath_tx_flush_tid. It
is possible that ath_tx_flush_tid completelly flushes TID (if all
packets in this TID have already been retried). If this happened
ath_tx_aggr_stop would leave TID in cleanup state permanently.
Fix this by making ath_tx_flush_tid remove AGGR_ADDBA_COMPLETE and
AGGR_CLEANUP flags from TID status if TID is empty.
Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 55d077e7135d..80639e3e4ac9 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -179,6 +179,11 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) spin_lock_bh(&txq->axq_lock); } + if (tid->baw_head == tid->baw_tail) { + tid->state &= ~AGGR_ADDBA_COMPLETE; + tid->state &= ~AGGR_CLEANUP; + } + spin_unlock_bh(&txq->axq_lock); } @@ -556,15 +561,9 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, spin_unlock_bh(&txq->axq_lock); } - if (tid->state & AGGR_CLEANUP) { + if (tid->state & AGGR_CLEANUP) ath_tx_flush_tid(sc, tid); - if (tid->baw_head == tid->baw_tail) { - tid->state &= ~AGGR_ADDBA_COMPLETE; - tid->state &= ~AGGR_CLEANUP; - } - } - rcu_read_unlock(); if (needreset) { |
