From 0934af2340caf3c9f247ae650bf0c6faa4203dba Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Wed, 18 Mar 2009 20:22:00 +0530 Subject: ath9k: Fix rate control update for aggregated frames We will miss rate control update if first A-MPDU of an aggregation is not Block Acked as we always tell if the rate control needs to updated through update_rc of first A-MPDU. This patch does rate control update for the first A-MPDU which notifies it's tx status (which is not necessarily the first A-MPDU of an aggregation) to mac80211. Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/xmit.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 8968abe7f48..f2877193e95 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -64,6 +64,10 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq, struct list_head *head); static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf); +static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf, + int txok); +static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds, + int nbad, int txok); /*********************/ /* Aggregation logic */ @@ -274,9 +278,10 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, struct ath_buf *bf_next, *bf_last = bf->bf_lastbf; struct ath_desc *ds = bf_last->bf_desc; struct list_head bf_head, bf_pending; - u16 seq_st = 0; + u16 seq_st = 0, acked_cnt = 0, txfail_cnt = 0; u32 ba[WME_BA_BMP_SIZE >> 5]; - int isaggr, txfail, txpending, sendbar = 0, needreset = 0; + int isaggr, txfail, txpending, sendbar = 0, needreset = 0, nbad = 0; + bool rc_update = true; skb = (struct sk_buff *)bf->bf_mpdu; hdr = (struct ieee80211_hdr *)skb->data; @@ -316,6 +321,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, INIT_LIST_HEAD(&bf_pending); INIT_LIST_HEAD(&bf_head); + nbad = ath_tx_num_badfrms(sc, bf, txok); while (bf) { txfail = txpending = 0; bf_next = bf->bf_next; @@ -323,8 +329,10 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, bf->bf_seqno))) { /* transmit completion, subframe is * acked by block ack */ + acked_cnt++; } else if (!isaggr && txok) { /* transmit completion */ + acked_cnt++; } else { if (!(tid->state & AGGR_CLEANUP) && ds->ds_txstat.ts_flags != ATH9K_TX_SW_ABORTED) { @@ -335,6 +343,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, bf->bf_state.bf_type |= BUF_XRETRY; txfail = 1; sendbar = 1; + txfail_cnt++; } } else { /* @@ -361,6 +370,11 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_tx_update_baw(sc, tid, bf->bf_seqno); spin_unlock_bh(&txq->axq_lock); + if (rc_update) + if (acked_cnt == 1 || txfail_cnt == 1) { + ath_tx_rc_status(bf, ds, nbad, txok); + rc_update = false; + } ath_tx_complete_buf(sc, bf, &bf_head, !txfail, sendbar); } else { /* retry the un-acked ones */ @@ -1901,7 +1915,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) struct ath_buf *bf, *lastbf, *bf_held = NULL; struct list_head bf_head; struct ath_desc *ds; - int txok, nbad = 0; + int txok; int status; DPRINTF(sc, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n", @@ -1995,13 +2009,9 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) bf->bf_retries = ds->ds_txstat.ts_longretry; if (ds->ds_txstat.ts_status & ATH9K_TXERR_XRETRY) bf->bf_state.bf_type |= BUF_XRETRY; - nbad = 0; - } else { - nbad = ath_tx_num_badfrms(sc, bf, txok); + ath_tx_rc_status(bf, ds, 0, txok); } - ath_tx_rc_status(bf, ds, nbad, txok); - if (bf_isampdu(bf)) ath_tx_complete_aggr(sc, txq, bf, &bf_head, txok); else -- cgit v1.2.3