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path: root/drivers/net/wireless/ath9k/xmit.c
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Diffstat (limited to 'drivers/net/wireless/ath9k/xmit.c')
-rw-r--r--drivers/net/wireless/ath9k/xmit.c78
1 files changed, 46 insertions, 32 deletions
diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c
index e3f376611f85..689bdbf78808 100644
--- a/drivers/net/wireless/ath9k/xmit.c
+++ b/drivers/net/wireless/ath9k/xmit.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2008 Atheros Communications Inc.
+ * Copyright (c) 2008-2009 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -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, bool update_rc);
/*********************/
/* 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 +370,13 @@ 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 && (acked_cnt == 1 || txfail_cnt == 1)) {
+ ath_tx_rc_status(bf, ds, nbad, txok, true);
+ rc_update = false;
+ } else {
+ ath_tx_rc_status(bf, ds, nbad, txok, false);
+ }
+
ath_tx_complete_buf(sc, bf, &bf_head, !txfail, sendbar);
} else {
/* retry the un-acked ones */
@@ -1734,7 +1750,7 @@ exit:
/*****************/
static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
- struct ath_xmit_status *tx_status)
+ int tx_flags)
{
struct ieee80211_hw *hw = sc->hw;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
@@ -1755,18 +1771,14 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
tx_info->rate_driver_data[0] = NULL;
}
- if (tx_status->flags & ATH_TX_BAR) {
+ if (tx_flags & ATH_TX_BAR)
tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
- tx_status->flags &= ~ATH_TX_BAR;
- }
- if (!(tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY))) {
+ if (!(tx_flags & (ATH_TX_ERROR | ATH_TX_XRETRY))) {
/* Frame was ACKed */
tx_info->flags |= IEEE80211_TX_STAT_ACK;
}
- tx_info->status.rates[0].count = tx_status->retries + 1;
-
hdrlen = ieee80211_get_hdrlen_from_skb(skb);
padsize = hdrlen & 3;
if (padsize && hdrlen >= 24) {
@@ -1789,29 +1801,22 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
int txok, int sendbar)
{
struct sk_buff *skb = bf->bf_mpdu;
- struct ath_xmit_status tx_status;
unsigned long flags;
+ int tx_flags = 0;
- /*
- * Set retry information.
- * NB: Don't use the information in the descriptor, because the frame
- * could be software retried.
- */
- tx_status.retries = bf->bf_retries;
- tx_status.flags = 0;
if (sendbar)
- tx_status.flags = ATH_TX_BAR;
+ tx_flags = ATH_TX_BAR;
if (!txok) {
- tx_status.flags |= ATH_TX_ERROR;
+ tx_flags |= ATH_TX_ERROR;
if (bf_isxretried(bf))
- tx_status.flags |= ATH_TX_XRETRY;
+ tx_flags |= ATH_TX_XRETRY;
}
dma_unmap_single(sc->dev, bf->bf_dmacontext, skb->len, DMA_TO_DEVICE);
- ath_tx_complete(sc, skb, &tx_status);
+ ath_tx_complete(sc, skb, tx_flags);
/*
* Return the list of ath_buf of this mpdu to free queue
@@ -1852,27 +1857,40 @@ static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf,
return nbad;
}
-static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds, int nbad)
+static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds,
+ int nbad, int txok, bool update_rc)
{
struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
+ struct ieee80211_hw *hw = tx_info_priv->aphy->hw;
+ u8 i, tx_rateindex;
+
+ if (txok)
+ tx_info->status.ack_signal = ds->ds_txstat.ts_rssi;
- tx_info_priv->update_rc = false;
+ tx_rateindex = ds->ds_txstat.ts_rateindex;
+ WARN_ON(tx_rateindex >= hw->max_rates);
+
+ tx_info_priv->update_rc = update_rc;
if (ds->ds_txstat.ts_status & ATH9K_TXERR_FILT)
tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
if ((ds->ds_txstat.ts_status & ATH9K_TXERR_FILT) == 0 &&
- (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0) {
+ (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0 && update_rc) {
if (ieee80211_is_data(hdr->frame_control)) {
memcpy(&tx_info_priv->tx, &ds->ds_txstat,
sizeof(tx_info_priv->tx));
tx_info_priv->n_frames = bf->bf_nframes;
tx_info_priv->n_bad_frames = nbad;
- tx_info_priv->update_rc = true;
}
}
+
+ for (i = tx_rateindex + 1; i < hw->max_rates; i++)
+ tx_info->status.rates[i].count = 0;
+
+ tx_info->status.rates[tx_rateindex].count = bf->bf_retries + 1;
}
static void ath_wake_mac80211_queue(struct ath_softc *sc, struct ath_txq *txq)
@@ -1897,7 +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",
@@ -1991,13 +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, true);
}
- ath_tx_rc_status(bf, ds, nbad);
-
if (bf_isampdu(bf))
ath_tx_complete_aggr(sc, txq, bf, &bf_head, txok);
else
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.