diff options
Diffstat (limited to 'package/mac80211/patches/550-ath9k_limit_qlen.patch')
| -rw-r--r-- | package/mac80211/patches/550-ath9k_limit_qlen.patch | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/package/mac80211/patches/550-ath9k_limit_qlen.patch b/package/mac80211/patches/550-ath9k_limit_qlen.patch new file mode 100644 index 000000000..9e144f39c --- /dev/null +++ b/package/mac80211/patches/550-ath9k_limit_qlen.patch @@ -0,0 +1,152 @@ +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -240,6 +240,7 @@ struct ath_atx_tid { + struct ath_node *an; + struct ath_atx_ac *ac; + unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)]; ++ int buf_pending; + u16 seq_start; + u16 seq_next; + u16 baw_size; +@@ -286,6 +287,9 @@ struct ath_tx_control { + * (axq_qnum). + */ + struct ath_tx { ++ u32 qlen_single; ++ u32 qlen_aggr; ++ + u16 seq_no; + u32 txqsetup; + spinlock_t txbuflock; +--- a/drivers/net/wireless/ath/ath9k/debug.c ++++ b/drivers/net/wireless/ath/ath9k/debug.c +@@ -1341,6 +1341,10 @@ int ath9k_init_debug(struct ath_hw *ah) + sc, &fops_wiphy); + debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc, + &fops_xmit); ++ debugfs_create_u32("qlen_single", S_IRUSR | S_IWUSR, ++ sc->debug.debugfs_phy, &sc->tx.qlen_single); ++ debugfs_create_u32("qlen_aggr", S_IRUSR | S_IWUSR, ++ sc->debug.debugfs_phy, &sc->tx.qlen_aggr); + debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy, sc, + &fops_stations); + debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc, +--- a/drivers/net/wireless/ath/ath9k/xmit.c ++++ b/drivers/net/wireless/ath/ath9k/xmit.c +@@ -348,6 +348,14 @@ static void ath_tx_count_frames(struct a + } + } + ++static struct ath_atx_tid *ath_get_tid(struct ath_node *an, struct sk_buff *skb) ++{ ++ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; ++ u8 tidno; ++ ++ tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK; ++ return ATH_AN_2_TID(an, tidno); ++} + + static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, + struct ath_buf *bf, struct list_head *bf_q, +@@ -438,6 +446,8 @@ static void ath_tx_complete_aggr(struct + __skb_queue_head_init(&bf_pending); + + ath_tx_count_frames(sc, bf, ts, txok, &nframes, &nbad); ++ tid->buf_pending -= nframes; ++ + while (bf) { + u16 seqno = bf->bf_state.seqno; + +@@ -834,6 +844,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_ + ath_tx_addto_baw(sc, tid, seqno); + ath9k_hw_set11n_aggr_middle(sc->sc_ah, bf->bf_desc, ndelim); + ++ tid->buf_pending++; + __skb_unlink(skb, &tid->buf_q); + list_add_tail(&bf->list, bf_q); + if (bf_prev) { +@@ -1489,6 +1500,8 @@ static void ath_tx_send_ampdu(struct ath + /* Add sub-frame to BAW */ + ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); + ++ tid->buf_pending++; ++ + /* Queue to h/w without aggregation */ + TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw); + bf->bf_lastbf = bf; +@@ -1817,23 +1830,13 @@ error: + + /* FIXME: tx power */ + static void ath_tx_start_dma(struct ath_softc *sc, struct sk_buff *skb, +- struct ath_tx_control *txctl) ++ struct ath_tx_control *txctl, ++ struct ath_atx_tid *tid) + { + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); +- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; +- struct ath_atx_tid *tid = NULL; + struct ath_buf *bf; +- u8 tidno; + + spin_lock_bh(&txctl->txq->axq_lock); +- if ((sc->sc_flags & SC_OP_TXAGGR) && txctl->an && +- ieee80211_is_data_qos(hdr->frame_control)) { +- tidno = ieee80211_get_qos_ctl(hdr)[0] & +- IEEE80211_QOS_CTL_TID_MASK; +- tid = ATH_AN_2_TID(txctl->an, tidno); +- +- WARN_ON(tid->ac->txq != txctl->txq); +- } + + if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tid) { + /* +@@ -1875,6 +1878,7 @@ int ath_tx_start(struct ieee80211_hw *hw + struct ieee80211_vif *vif = info->control.vif; + struct ath_softc *sc = hw->priv; + struct ath_txq *txq = txctl->txq; ++ struct ath_atx_tid *tid = NULL; + int padpos, padsize; + int frmlen = skb->len + FCS_LEN; + int q; +@@ -1907,6 +1911,7 @@ int ath_tx_start(struct ieee80211_hw *hw + + skb_push(skb, padsize); + memmove(skb->data, skb->data + padsize, padpos); ++ hdr = (struct ieee80211_hdr *) skb->data; + } + + if ((vif && vif->type != NL80211_IFTYPE_AP && +@@ -1916,6 +1921,24 @@ int ath_tx_start(struct ieee80211_hw *hw + + setup_frame_info(hw, skb, frmlen); + ++ if ((sc->sc_flags & SC_OP_TXAGGR) && txctl->an && ++ ieee80211_is_data_qos(hdr->frame_control)) { ++ tid = ath_get_tid(txctl->an, skb); ++ ++ WARN_ON(tid->ac->txq != txq); ++ } ++ ++ if ((info->flags & IEEE80211_TX_CTL_AMPDU) && tid) { ++ if (sc->tx.qlen_aggr > 0 && skb_queue_len(&tid->buf_q) + ++ tid->buf_pending >= sc->tx.qlen_aggr) ++ return -ENOMEM; ++ } else { ++ if (sc->tx.qlen_single > 0 && ++ txq->axq_depth - txq->axq_ampdu_depth >= ++ sc->tx.qlen_single) ++ return -ENOMEM; ++ } ++ + /* + * At this point, the vif, hw_key and sta pointers in the tx control + * info are no longer valid (overwritten by the ath_frame_info data. +@@ -1930,7 +1953,7 @@ int ath_tx_start(struct ieee80211_hw *hw + } + spin_unlock_bh(&txq->axq_lock); + +- ath_tx_start_dma(sc, skb, txctl); ++ ath_tx_start_dma(sc, skb, txctl, tid); + return 0; + } + |