diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/xmit.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 76 |
1 files changed, 60 insertions, 16 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 5de9878d2c1..4ff155e8ee5 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -242,7 +242,6 @@ static struct ath_buf* ath_clone_txbuf(struct ath_softc *sc, struct ath_buf *bf) spin_unlock_bh(&sc->tx.txbuflock); return NULL; } - ASSERT(!list_empty((&sc->tx.txbuf))); tbf = list_first_entry(&sc->tx.txbuf, struct ath_buf, list); list_del(&tbf->list); spin_unlock_bh(&sc->tx.txbuflock); @@ -383,8 +382,24 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, struct ath_buf *tbf; tbf = ath_clone_txbuf(sc, bf_last); - if (!tbf) + /* + * Update tx baw and complete the frame with + * failed status if we run out of tx buf + */ + if (!tbf) { + spin_lock_bh(&txq->axq_lock); + ath_tx_update_baw(sc, tid, + bf->bf_seqno); + spin_unlock_bh(&txq->axq_lock); + + bf->bf_state.bf_type |= BUF_XRETRY; + ath_tx_rc_status(bf, ds, nbad, + 0, false); + ath_tx_complete_buf(sc, bf, &bf_head, + 0, 0); break; + } + ath9k_hw_cleartxdesc(sc->sc_ah, tbf->bf_desc); list_add_tail(&tbf->list, &bf_head); } else { @@ -857,6 +872,7 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype) txq->axq_aggr_depth = 0; txq->axq_totalqueued = 0; txq->axq_linkbuf = NULL; + txq->axq_tx_inprogress = false; sc->tx.txqsetup |= 1<<qnum; } return &sc->tx.txq[qnum]; @@ -1023,6 +1039,10 @@ void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx) ath_tx_complete_buf(sc, bf, &bf_head, 0, 0); } + spin_lock_bh(&txq->axq_lock); + txq->axq_tx_inprogress = false; + spin_unlock_bh(&txq->axq_lock); + /* flush any pending frames if aggregation is enabled */ if (sc->sc_flags & SC_OP_TXAGGR) { if (!retry_tx) { @@ -1103,8 +1123,7 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) if (tid->paused) continue; - if ((txq->axq_depth % 2) == 0) - ath_tx_sched_aggr(sc, txq, tid); + ath_tx_sched_aggr(sc, txq, tid); /* * add tid to round-robin queue if more frames @@ -1947,19 +1966,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) if (bf->bf_stale) { bf_held = bf; if (list_is_last(&bf_held->list, &txq->axq_q)) { - txq->axq_link = NULL; - txq->axq_linkbuf = NULL; spin_unlock_bh(&txq->axq_lock); - - /* - * The holding descriptor is the last - * descriptor in queue. It's safe to remove - * the last holding descriptor in BH context. - */ - spin_lock_bh(&sc->tx.txbuflock); - list_move_tail(&bf_held->list, &sc->tx.txbuf); - spin_unlock_bh(&sc->tx.txbuflock); - break; } else { bf = list_entry(bf_held->list.next, @@ -1996,6 +2003,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) txq->axq_aggr_depth--; txok = (ds->ds_txstat.ts_status == 0); + txq->axq_tx_inprogress = false; spin_unlock_bh(&txq->axq_lock); if (bf_held) { @@ -2029,6 +2037,40 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) } } +void ath_tx_complete_poll_work(struct work_struct *work) +{ + struct ath_softc *sc = container_of(work, struct ath_softc, + tx_complete_work.work); + struct ath_txq *txq; + int i; + bool needreset = false; + + for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) + if (ATH_TXQ_SETUP(sc, i)) { + txq = &sc->tx.txq[i]; + spin_lock_bh(&txq->axq_lock); + if (txq->axq_depth) { + if (txq->axq_tx_inprogress) { + needreset = true; + spin_unlock_bh(&txq->axq_lock); + break; + } else { + txq->axq_tx_inprogress = true; + } + } + spin_unlock_bh(&txq->axq_lock); + } + + if (needreset) { + DPRINTF(sc, ATH_DBG_RESET, "tx hung, resetting the chip\n"); + ath_reset(sc, false); + } + + queue_delayed_work(sc->hw->workqueue, &sc->tx_complete_work, + msecs_to_jiffies(ATH_TX_COMPLETE_POLL_INT)); +} + + void ath_tx_tasklet(struct ath_softc *sc) { @@ -2069,6 +2111,8 @@ int ath_tx_init(struct ath_softc *sc, int nbufs) goto err; } + INIT_DELAYED_WORK(&sc->tx_complete_work, ath_tx_complete_poll_work); + err: if (error != 0) ath_tx_cleanup(sc); |