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wl12xx: fix tx_queue_count spurious increment 

Only increment the queue count after actually queuing the skb. This
avoids a spurious increment is case of dropped packets.

Also move the Tx-watermark checking code after the packet is enqueued.
This makes the count more accurate - it includes the just-queued
packet.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Arik Nemtsov 2011-08-14 13:17:39 +03:00 committed by Luciano Coelho
parent 04216da393
commit 04b4d69c89
1 changed files with 12 additions and 12 deletions
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24
drivers/net/wireless/wl12xx/main.c
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@ -1485,18 +1485,6 @@ static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
spin_lock_irqsave(&wl->wl_lock, flags);
wl->tx_queue_count[q]++;
/*
* The workqueue is slow to process the tx_queue and we need stop
* the queue here, otherwise the queue will get too long.
*/
if (wl->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
ieee80211_stop_queue(wl->hw, mapping);
set_bit(q, &wl->stopped_queues_map);
}
/* queue the packet */
if (wl->bss_type == BSS_TYPE_AP_BSS) {
if (!wl1271_is_active_sta(wl, hlid)) {
@ -1512,6 +1500,18 @@ static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
skb_queue_tail(&wl->tx_queue[q], skb);
}
wl->tx_queue_count[q]++;
/*
* The workqueue is slow to process the tx_queue and we need stop
* the queue here, otherwise the queue will get too long.
*/
if (wl->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
ieee80211_stop_queue(wl->hw, mapping);
set_bit(q, &wl->stopped_queues_map);
}
/*
* The chip specific setup must run before the first TX packet -
* before that, the tx_work will not be initialized!