ath9k: change maximum software retransmission handling
Instead of limiting a subframe to 10 A-MPDU software transmission attempts,
count hardware retransmissions as well and raise the limit a bit. That way
there will be fewer software retransmission attempts when traffic suffers
from lots of hardware retransmissions.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 9e65c31..a46b4e2 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -264,14 +264,17 @@
}
static void ath_tx_set_retry(struct ath_softc *sc, struct ath_txq *txq,
- struct sk_buff *skb)
+ struct sk_buff *skb, int count)
{
struct ath_frame_info *fi = get_frame_info(skb);
struct ath_buf *bf = fi->bf;
struct ieee80211_hdr *hdr;
+ int prev = fi->retries;
TX_STAT_INC(txq->axq_qnum, a_retries);
- if (fi->retries++ > 0)
+ fi->retries += count;
+
+ if (prev > 0)
return;
hdr = (struct ieee80211_hdr *)skb->data;
@@ -379,6 +382,7 @@
int nframes;
u8 tidno;
bool flush = !!(ts->ts_status & ATH9K_TX_FLUSH);
+ int i, retries;
skb = bf->bf_mpdu;
hdr = (struct ieee80211_hdr *)skb->data;
@@ -387,6 +391,10 @@
memcpy(rates, tx_info->control.rates, sizeof(rates));
+ retries = ts->ts_longretry + 1;
+ for (i = 0; i < ts->ts_rateindex; i++)
+ retries += rates[i].count;
+
rcu_read_lock();
sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
@@ -471,7 +479,8 @@
txpending = 1;
} else if (fi->retries < ATH_MAX_SW_RETRIES) {
if (txok || !an->sleeping)
- ath_tx_set_retry(sc, txq, bf->bf_mpdu);
+ ath_tx_set_retry(sc, txq, bf->bf_mpdu,
+ retries);
txpending = 1;
} else {
