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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 <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan 2009-03-18 20:22:00 +05:30 committed by John W. Linville
parent b3a902850a
commit 0934af2340
1 changed files with 18 additions and 8 deletions
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26
drivers/net/wireless/ath9k/xmit.c
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@ -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