diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-08-06 14:18:07 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-08-09 15:58:11 -0400 |
| commit | 8fed14085595c703612b5b712ffe114ef0370929 (patch) | |
| tree | cf20f55f47cffa2323b9e41ae4b4059be129951f /drivers | |
| parent | a1cd94d345a8f68300c8ccd8422434e54199f68d (diff) | |
| download | linux-8fed14085595c703612b5b712ffe114ef0370929.tar.bz2 | |
ath9k: fix block ack window tracking check
When a packet has been tracked as part of the BlockAck window and added
to the hardware queue, it can end up back in the TID queue again with
fi->retries still set to 0 (e.g. if the frame was filtered). Keep an
extra bit for the BAW tracking status to fix this corner case.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ath9k.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 15 |
2 files changed, 11 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 725515fd5ffe..126f98066f1b 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -211,8 +211,9 @@ struct ath_frame_info { int framelen; enum ath9k_key_type keytype; u8 keyix; - u8 retries; u8 rtscts_rate; + u8 retries : 7; + u8 baw_tracked : 1; }; struct ath_buf_state { diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 887f2d4a4452..d66e8b855f85 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -225,7 +225,7 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) } } - if (fi->retries) { + if (fi->baw_tracked) { list_add_tail(&bf->list, &bf_head); ath_tx_update_baw(sc, tid, bf->bf_state.seqno); ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0); @@ -262,13 +262,16 @@ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid, } static void ath_tx_addto_baw(struct ath_softc *sc, struct ath_atx_tid *tid, - u16 seqno) + struct ath_buf *bf) { + struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu); + u16 seqno = bf->bf_state.seqno; int index, cindex; index = ATH_BA_INDEX(tid->seq_start, seqno); cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1); __set_bit(cindex, tid->tx_buf); + fi->baw_tracked = 1; if (index >= ((tid->baw_tail - tid->baw_head) & (ATH_TID_MAX_BUFS - 1))) { @@ -960,8 +963,8 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, bf->bf_next = NULL; /* link buffers of this frame to the aggregate */ - if (!fi->retries) - ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); + if (!fi->baw_tracked) + ath_tx_addto_baw(sc, tid, bf); bf->bf_state.ndelim = ndelim; __skb_unlink(skb, tid_q); @@ -1479,7 +1482,7 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw, __skb_unlink(bf->bf_mpdu, tid_q); list_add_tail(&bf->list, &bf_q); ath_set_rates(tid->an->vif, tid->an->sta, bf); - ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); + ath_tx_addto_baw(sc, tid, bf); bf->bf_state.bf_type &= ~BUF_AGGR; if (bf_tail) bf_tail->bf_next = bf; @@ -1912,7 +1915,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_txq *txq, list_add(&bf->list, &bf_head); /* Add sub-frame to BAW */ - ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); + ath_tx_addto_baw(sc, tid, bf); /* Queue to h/w without aggregation */ TX_STAT_INC(txq->axq_qnum, a_queued_hw); |