diff options
Diffstat (limited to 'package/mac80211/patches/565-ath9k_fix_lockup.patch')
| -rw-r--r-- | package/mac80211/patches/565-ath9k_fix_lockup.patch | 296 |
1 files changed, 285 insertions, 11 deletions
diff --git a/package/mac80211/patches/565-ath9k_fix_lockup.patch b/package/mac80211/patches/565-ath9k_fix_lockup.patch index c1721eba53..6bc9171c3e 100644 --- a/package/mac80211/patches/565-ath9k_fix_lockup.patch +++ b/package/mac80211/patches/565-ath9k_fix_lockup.patch @@ -1,25 +1,299 @@ --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c -@@ -189,8 +189,11 @@ static void ath_tx_flush_tid(struct ath_ +@@ -104,6 +104,29 @@ static int ath_max_4ms_framelen[4][32] = + /* Aggregation logic */ + /*********************/ + ++static void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq) ++{ ++ spin_lock_bh(&txq->axq_lock); ++} ++ ++static void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq) ++{ ++ spin_unlock_bh(&txq->axq_lock); ++} ++ ++static void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq) ++{ ++ struct sk_buff_head q; ++ struct sk_buff *skb; ++ ++ __skb_queue_head_init(&q); ++ skb_queue_splice_init(&txq->complete_q, &q); ++ spin_unlock_bh(&txq->axq_lock); ++ ++ while ((skb = __skb_dequeue(&q))) ++ ieee80211_tx_status(sc->hw, skb); ++} ++ + static void ath_tx_queue_tid(struct ath_txq *txq, struct ath_atx_tid *tid) + { + struct ath_atx_ac *ac = tid->ac; +@@ -130,7 +153,7 @@ static void ath_tx_resume_tid(struct ath + + WARN_ON(!tid->paused); + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + tid->paused = false; + + if (skb_queue_empty(&tid->buf_q)) +@@ -139,7 +162,7 @@ static void ath_tx_resume_tid(struct ath + ath_tx_queue_tid(txq, tid); + ath_txq_schedule(sc, txq); + unlock: +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + + static struct ath_frame_info *get_frame_info(struct sk_buff *skb) +@@ -189,8 +212,11 @@ static void ath_tx_flush_tid(struct ath_ tid->state &= ~AGGR_CLEANUP; } - if (sendbar) + if (sendbar) { -+ spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock(sc, txq); ath_send_bar(tid, tid->seq_start); -+ spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + } } static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid, -@@ -566,7 +569,9 @@ static void ath_tx_complete_aggr(struct +@@ -564,13 +590,6 @@ static void ath_tx_complete_aggr(struct + bf = bf_next; + } + +- if (bar_index >= 0) { +- u16 bar_seq = ATH_BA_INDEX2SEQ(seq_first, bar_index); +- ath_send_bar(tid, ATH_BA_INDEX2SEQ(seq_first, bar_index + 1)); +- if (BAW_WITHIN(tid->seq_start, tid->baw_size, bar_seq)) +- tid->bar_index = ATH_BA_INDEX(tid->seq_start, bar_seq); +- } +- + /* prepend un-acked frames to the beginning of the pending frame queue */ + if (!skb_queue_empty(&bf_pending)) { + if (an->sleeping) +@@ -585,6 +604,17 @@ static void ath_tx_complete_aggr(struct + } + } + ++ if (bar_index >= 0) { ++ u16 bar_seq = ATH_BA_INDEX2SEQ(seq_first, bar_index); ++ ++ if (BAW_WITHIN(tid->seq_start, tid->baw_size, bar_seq)) ++ tid->bar_index = ATH_BA_INDEX(tid->seq_start, bar_seq); ++ ++ ath_txq_unlock(sc, txq); ++ ath_send_bar(tid, ATH_BA_INDEX2SEQ(seq_first, bar_index + 1)); ++ ath_txq_lock(sc, txq); ++ } ++ + if (tid->state & AGGR_CLEANUP) + ath_tx_flush_tid(sc, tid); + +@@ -1183,7 +1213,7 @@ void ath_tx_aggr_stop(struct ath_softc * + return; + } + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + txtid->paused = true; + + /* +@@ -1198,7 +1228,7 @@ void ath_tx_aggr_stop(struct ath_softc * + txtid->state &= ~AGGR_ADDBA_COMPLETE; + + ath_tx_flush_tid(sc, txtid); +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + + void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc, +@@ -1219,7 +1249,7 @@ void ath_tx_aggr_sleep(struct ieee80211_ + ac = tid->ac; + txq = ac->txq; + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + + buffered = !skb_queue_empty(&tid->buf_q); + +@@ -1231,7 +1261,7 @@ void ath_tx_aggr_sleep(struct ieee80211_ + list_del(&ac->list); + } + +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock(sc, txq); + + ieee80211_sta_set_buffered(sta, tidno, buffered); + } +@@ -1250,7 +1280,7 @@ void ath_tx_aggr_wakeup(struct ath_softc + ac = tid->ac; + txq = ac->txq; + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + ac->clear_ps_filter = true; + + if (!skb_queue_empty(&tid->buf_q) && !tid->paused) { +@@ -1258,7 +1288,7 @@ void ath_tx_aggr_wakeup(struct ath_softc + ath_txq_schedule(sc, txq); + } + +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + } + +@@ -1358,6 +1388,7 @@ struct ath_txq *ath_txq_setup(struct ath + txq->axq_qnum = axq_qnum; + txq->mac80211_qnum = -1; + txq->axq_link = NULL; ++ __skb_queue_head_init(&txq->complete_q); + INIT_LIST_HEAD(&txq->axq_q); + INIT_LIST_HEAD(&txq->axq_acq); + spin_lock_init(&txq->axq_lock); +@@ -1482,7 +1513,8 @@ static void ath_drain_txq_list(struct at + */ + void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx) + { +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); ++ + if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { + int idx = txq->txq_tailidx; + +@@ -1503,7 +1535,7 @@ void ath_draintxq(struct ath_softc *sc, + if ((sc->sc_flags & SC_OP_TXAGGR) && !retry_tx) + ath_txq_drain_pending_buffers(sc, txq); + +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + + bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx) +@@ -1947,7 +1979,7 @@ int ath_tx_start(struct ieee80211_hw *hw + + q = skb_get_queue_mapping(skb); + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + + if (txq == sc->tx.txq_map[q] && + ++txq->pending_frames > ATH_MAX_QDEPTH && !txq->stopped) { +@@ -1957,7 +1989,7 @@ int ath_tx_start(struct ieee80211_hw *hw + + ath_tx_start_dma(sc, skb, txctl, tid); + +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock(sc, txq); + + return 0; + } +@@ -1969,7 +2001,6 @@ int ath_tx_start(struct ieee80211_hw *hw + static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, + int tx_flags, struct ath_txq *txq) + { +- struct ieee80211_hw *hw = sc->hw; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ieee80211_hdr * hdr = (struct ieee80211_hdr *)skb->data; +@@ -2013,7 +2044,7 @@ static void ath_tx_complete(struct ath_s + } + } + +- ieee80211_tx_status(hw, skb); ++ __skb_queue_tail(&txq->complete_q, skb); + } + + static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, +@@ -2149,7 +2180,7 @@ static void ath_tx_processq(struct ath_s + txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum), + txq->axq_link); + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + for (;;) { + if (work_pending(&sc->hw_reset_work)) + break; +@@ -2208,7 +2239,7 @@ static void ath_tx_processq(struct ath_s + + ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head); + } +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + + static void ath_tx_complete_poll_work(struct work_struct *work) +@@ -2225,17 +2256,17 @@ static void ath_tx_complete_poll_work(st + 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); ++ ath_txq_lock(sc, txq); + if (txq->axq_depth) { + if (txq->axq_tx_inprogress) { + needreset = true; +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock(sc, txq); + break; + } else { + txq->axq_tx_inprogress = true; + } + } +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + + if (needreset) { +@@ -2293,10 +2324,10 @@ void ath_tx_edma_tasklet(struct ath_soft + + txq = &sc->tx.txq[ts.qid]; + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); + + if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) { +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock(sc, txq); + return; + } + +@@ -2322,7 +2353,7 @@ void ath_tx_edma_tasklet(struct ath_soft + } + + ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head); +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock_complete(sc, txq); + } + } + +@@ -2460,7 +2491,7 @@ void ath_tx_node_cleanup(struct ath_soft + ac = tid->ac; + txq = ac->txq; + +- spin_lock_bh(&txq->axq_lock); ++ ath_txq_lock(sc, txq); - if (bar_index >= 0) { - u16 bar_seq = ATH_BA_INDEX2SEQ(seq_first, bar_index); -+ spin_unlock_bh(&txq->axq_lock); - ath_send_bar(tid, ATH_BA_INDEX2SEQ(seq_first, bar_index + 1)); -+ spin_lock_bh(&txq->axq_lock); - if (BAW_WITHIN(tid->seq_start, tid->baw_size, bar_seq)) - tid->bar_index = ATH_BA_INDEX(tid->seq_start, bar_seq); + if (tid->sched) { + list_del(&tid->list); +@@ -2476,6 +2507,6 @@ void ath_tx_node_cleanup(struct ath_soft + tid->state &= ~AGGR_ADDBA_COMPLETE; + tid->state &= ~AGGR_CLEANUP; + +- spin_unlock_bh(&txq->axq_lock); ++ ath_txq_unlock(sc, txq); } + } +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -196,6 +196,7 @@ struct ath_txq { + u8 txq_headidx; + u8 txq_tailidx; + int pending_frames; ++ struct sk_buff_head complete_q; + }; + + struct ath_atx_ac { |