ath9k: clean up processing of pending tx frames on reset
Dropping packets from aggregation sessions is usually not a good idea, as
it might upset the synchronization of the BlockAck receive window of the
remote node. The use of the retry_tx parameter to reset/tx-drain functions
also seemed a bit arbitrary.
This patch removes this parameter altogether and ensures that pending tx
frames are not dropped for no good reason.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index ca4a034..ac9ee67 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -378,7 +378,7 @@
static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
struct ath_buf *bf, struct list_head *bf_q,
- struct ath_tx_status *ts, int txok, bool retry)
+ struct ath_tx_status *ts, int txok)
{
struct ath_node *an = NULL;
struct sk_buff *skb;
@@ -490,7 +490,7 @@
} else if (!isaggr && txok) {
/* transmit completion */
acked_cnt++;
- } else if ((tid->state & AGGR_CLEANUP) || !retry) {
+ } else if (tid->state & AGGR_CLEANUP) {
/*
* cleanup in progress, just fail
* the un-acked sub-frames
@@ -1331,23 +1331,6 @@
/* Queue Management */
/********************/
-static void ath_txq_drain_pending_buffers(struct ath_softc *sc,
- struct ath_txq *txq)
-{
- struct ath_atx_ac *ac, *ac_tmp;
- struct ath_atx_tid *tid, *tid_tmp;
-
- list_for_each_entry_safe(ac, ac_tmp, &txq->axq_acq, list) {
- list_del(&ac->list);
- ac->sched = false;
- list_for_each_entry_safe(tid, tid_tmp, &ac->tid_q, list) {
- list_del(&tid->list);
- tid->sched = false;
- ath_tid_drain(sc, txq, tid);
- }
- }
-}
-
struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
{
struct ath_hw *ah = sc->sc_ah;
@@ -1477,7 +1460,7 @@
}
static void ath_drain_txq_list(struct ath_softc *sc, struct ath_txq *txq,
- struct list_head *list, bool retry_tx)
+ struct list_head *list)
{
struct ath_buf *bf, *lastbf;
struct list_head bf_head;
@@ -1505,8 +1488,7 @@
txq->axq_ampdu_depth--;
if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0,
- retry_tx);
+ ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0);
else
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0);
}
@@ -1518,7 +1500,7 @@
* This assumes output has been stopped and
* we do not need to block ath_tx_tasklet.
*/
-void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
+void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq)
{
ath_txq_lock(sc, txq);
@@ -1526,8 +1508,7 @@
int idx = txq->txq_tailidx;
while (!list_empty(&txq->txq_fifo[idx])) {
- ath_drain_txq_list(sc, txq, &txq->txq_fifo[idx],
- retry_tx);
+ ath_drain_txq_list(sc, txq, &txq->txq_fifo[idx]);
INCR(idx, ATH_TXFIFO_DEPTH);
}
@@ -1536,16 +1517,12 @@
txq->axq_link = NULL;
txq->axq_tx_inprogress = false;
- ath_drain_txq_list(sc, txq, &txq->axq_q, retry_tx);
-
- /* flush any pending frames if aggregation is enabled */
- if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) && !retry_tx)
- ath_txq_drain_pending_buffers(sc, txq);
+ ath_drain_txq_list(sc, txq, &txq->axq_q);
ath_txq_unlock_complete(sc, txq);
}
-bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx)
+bool ath_drain_all_txq(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
@@ -1581,7 +1558,7 @@
*/
txq = &sc->tx.txq[i];
txq->stopped = false;
- ath_draintxq(sc, txq, retry_tx);
+ ath_draintxq(sc, txq);
}
return !npend;
@@ -2191,7 +2168,7 @@
ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok);
ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok);
} else
- ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok, true);
+ ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok);
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
ath_txq_schedule(sc, txq);