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author | Felix Fietkau <nbd@openwrt.org> | 2011-12-10 21:17:07 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2011-12-10 21:17:07 +0000 |
commit | dea57439e697ef7d6a30afc9e451fa6010f8f7d4 (patch) | |
tree | f2bcb9592775f25a629d2f8d7351766a852f6b8f /package/mac80211/patches/560-ath9k_rework_send_bar.patch | |
parent | 606e4948a58fb946bca41f9b5bc564d32723d69b (diff) | |
download | upstream-dea57439e697ef7d6a30afc9e451fa6010f8f7d4.tar.gz upstream-dea57439e697ef7d6a30afc9e451fa6010f8f7d4.tar.bz2 upstream-dea57439e697ef7d6a30afc9e451fa6010f8f7d4.zip |
ath9k: improve handling of blockackreq (should improve aggregation behavior under tough wifi conditions with lots of retransmission)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29494 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/mac80211/patches/560-ath9k_rework_send_bar.patch')
-rw-r--r-- | package/mac80211/patches/560-ath9k_rework_send_bar.patch | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/package/mac80211/patches/560-ath9k_rework_send_bar.patch b/package/mac80211/patches/560-ath9k_rework_send_bar.patch new file mode 100644 index 0000000000..9176713a5b --- /dev/null +++ b/package/mac80211/patches/560-ath9k_rework_send_bar.patch @@ -0,0 +1,240 @@ +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -159,6 +159,9 @@ void ath_descdma_cleanup(struct ath_soft + /* return block-ack bitmap index given sequence and starting sequence */ + #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1)) + ++/* return the seqno for _start + _offset */ ++#define ATH_BA_INDEX2SEQ(_seq, _offset) (((_seq) + (_offset)) & (IEEE80211_SEQ_MAX - 1)) ++ + /* returns delimiter padding required given the packet length */ + #define ATH_AGGR_GET_NDELIM(_len) \ + (((_len) >= ATH_AGGR_MINPLEN) ? 0 : \ +@@ -253,9 +256,9 @@ struct ath_atx_tid { + struct ath_node { + #ifdef CONFIG_ATH9K_DEBUGFS + struct list_head list; /* for sc->nodes */ ++#endif + struct ieee80211_sta *sta; /* station struct we're part of */ + struct ieee80211_vif *vif; /* interface with which we're associated */ +-#endif + struct ath_atx_tid tid[WME_NUM_TID]; + struct ath_atx_ac ac[WME_NUM_AC]; + int ps_key; +@@ -277,7 +280,6 @@ struct ath_tx_control { + }; + + #define ATH_TX_ERROR 0x01 +-#define ATH_TX_BAR 0x02 + + /** + * @txq_map: Index is mac80211 queue number. This is +--- a/drivers/net/wireless/ath/ath9k/main.c ++++ b/drivers/net/wireless/ath/ath9k/main.c +@@ -644,9 +644,9 @@ static void ath_node_attach(struct ath_s + spin_lock(&sc->nodes_lock); + list_add(&an->list, &sc->nodes); + spin_unlock(&sc->nodes_lock); ++#endif + an->sta = sta; + an->vif = vif; +-#endif + if (sc->sc_flags & SC_OP_TXAGGR) { + ath_tx_node_init(sc, an); + an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + +--- a/drivers/net/wireless/ath/ath9k/xmit.c ++++ b/drivers/net/wireless/ath/ath9k/xmit.c +@@ -53,7 +53,7 @@ static void ath_tx_complete(struct ath_s + int tx_flags, struct ath_txq *txq); + static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, + struct ath_txq *txq, struct list_head *bf_q, +- struct ath_tx_status *ts, int txok, int sendbar); ++ struct ath_tx_status *ts, int txok); + static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq, + struct list_head *head, bool internal); + static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf, +@@ -150,6 +150,12 @@ static struct ath_frame_info *get_frame_ + return (struct ath_frame_info *) &tx_info->rate_driver_data[0]; + } + ++static void ath_send_bar(struct ath_atx_tid *tid, u16 seqno) ++{ ++ ieee80211_send_bar(tid->an->vif, tid->an->sta->addr, tid->tidno, ++ seqno << IEEE80211_SEQ_SEQ_SHIFT); ++} ++ + static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) + { + struct ath_txq *txq = tid->ac->txq; +@@ -158,6 +164,7 @@ static void ath_tx_flush_tid(struct ath_ + struct list_head bf_head; + struct ath_tx_status ts; + struct ath_frame_info *fi; ++ bool sendbar = false; + + INIT_LIST_HEAD(&bf_head); + +@@ -172,7 +179,8 @@ static void ath_tx_flush_tid(struct ath_ + if (bf && fi->retries) { + 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, 1); ++ ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0); ++ sendbar = true; + } else { + ath_tx_send_normal(sc, txq, NULL, skb); + } +@@ -185,6 +193,9 @@ static void ath_tx_flush_tid(struct ath_ + } + + spin_unlock_bh(&txq->axq_lock); ++ ++ if (sendbar) ++ ath_send_bar(tid, tid->seq_start); + } + + static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid, +@@ -255,7 +266,7 @@ static void ath_tid_drain(struct ath_sof + ath_tx_update_baw(sc, tid, bf->bf_state.seqno); + + spin_unlock(&txq->axq_lock); +- ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0); ++ ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0); + spin_lock(&txq->axq_lock); + } + +@@ -381,7 +392,7 @@ static void ath_tx_complete_aggr(struct + struct ath_buf *bf_next, *bf_last = bf->bf_lastbf; + struct list_head bf_head; + struct sk_buff_head bf_pending; +- u16 seq_st = 0, acked_cnt = 0, txfail_cnt = 0; ++ u16 seq_st = 0, acked_cnt = 0, txfail_cnt = 0, seq_first; + u32 ba[WME_BA_BMP_SIZE >> 5]; + int isaggr, txfail, txpending, sendbar = 0, needreset = 0, nbad = 0; + bool rc_update = true; +@@ -391,6 +402,7 @@ static void ath_tx_complete_aggr(struct + u8 tidno; + bool flush = !!(ts->ts_status & ATH9K_TX_FLUSH); + int i, retries; ++ int bar_index = -1; + + skb = bf->bf_mpdu; + hdr = (struct ieee80211_hdr *)skb->data; +@@ -416,8 +428,7 @@ static void ath_tx_complete_aggr(struct + if (!bf->bf_stale || bf_next != NULL) + list_move_tail(&bf->list, &bf_head); + +- ath_tx_complete_buf(sc, bf, txq, &bf_head, ts, +- 0, 0); ++ ath_tx_complete_buf(sc, bf, txq, &bf_head, ts, 0); + + bf = bf_next; + } +@@ -427,6 +438,7 @@ static void ath_tx_complete_aggr(struct + an = (struct ath_node *)sta->drv_priv; + tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK; + tid = ATH_AN_2_TID(an, tidno); ++ seq_first = tid->seq_start; + + /* + * The hardware occasionally sends a tx status for the wrong TID. +@@ -495,8 +507,9 @@ static void ath_tx_complete_aggr(struct + txpending = 1; + } else { + txfail = 1; +- sendbar = 1; + txfail_cnt++; ++ bar_index = max_t(int, bar_index, ++ ATH_BA_INDEX(seq_first, seqno)); + } + } + +@@ -525,7 +538,7 @@ static void ath_tx_complete_aggr(struct + } + + ath_tx_complete_buf(sc, bf, txq, &bf_head, ts, +- !txfail, sendbar); ++ !txfail); + } else { + /* retry the un-acked ones */ + if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) { +@@ -545,8 +558,10 @@ static void ath_tx_complete_aggr(struct + + ath_tx_complete_buf(sc, bf, txq, + &bf_head, +- ts, 0, +- !flush); ++ ts, 0); ++ bar_index = max_t(int, bar_index, ++ ATH_BA_INDEX(seq_first, ++ seqno)); + break; + } + +@@ -564,6 +579,9 @@ static void ath_tx_complete_aggr(struct + bf = bf_next; + } + ++ if (bar_index >= 0) ++ ath_send_bar(tid, ATH_BA_INDEX2SEQ(seq_first, bar_index + 1)); ++ + /* prepend un-acked frames to the beginning of the pending frame queue */ + if (!skb_queue_empty(&bf_pending)) { + if (an->sleeping) +@@ -1452,7 +1470,7 @@ static void ath_drain_txq_list(struct at + ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0, + retry_tx); + else +- ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0); ++ ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0); + spin_lock_bh(&txq->axq_lock); + } + } +@@ -1967,9 +1985,6 @@ static void ath_tx_complete(struct ath_s + + ath_dbg(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb); + +- if (tx_flags & ATH_TX_BAR) +- tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; +- + if (!(tx_flags & ATH_TX_ERROR)) + /* Frame was ACKed */ + tx_info->flags |= IEEE80211_TX_STAT_ACK; +@@ -2013,16 +2028,13 @@ static void ath_tx_complete(struct ath_s + + static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, + struct ath_txq *txq, struct list_head *bf_q, +- struct ath_tx_status *ts, int txok, int sendbar) ++ struct ath_tx_status *ts, int txok) + { + struct sk_buff *skb = bf->bf_mpdu; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + unsigned long flags; + int tx_flags = 0; + +- if (sendbar) +- tx_flags = ATH_TX_BAR; +- + if (!txok) + tx_flags |= ATH_TX_ERROR; + +@@ -2129,7 +2141,7 @@ static void ath_tx_process_buffer(struct + + if (!bf_isampdu(bf)) { + ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok); +- ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok, 0); ++ ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok); + } else + ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok, true); + +--- a/drivers/net/wireless/ath/ath9k/debug.c ++++ b/drivers/net/wireless/ath/ath9k/debug.c +@@ -856,7 +856,7 @@ void ath_debug_stat_tx(struct ath_softc + sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len; + + if (bf_isampdu(bf)) { +- if (flags & ATH_TX_BAR) ++ if (flags & ATH_TX_ERROR) + TX_STAT_INC(qnum, a_xretries); + else + TX_STAT_INC(qnum, a_completed); |