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>
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index b06ff0b..82f4408 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -1485,18 +1485,6 @@
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 @@
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!