wl12xx: implement Tx watermarks per AC
Each AC is stopped when its queue is filled up to the high watermark,
and restarted when its queue it lower than the low watermark. This
ensures congested ACs are not able to starve other ACs.
Signed-off-by: Arik Nemtsov <arik@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 08eb81e..d7a7459 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -1497,10 +1497,11 @@
{
struct wl1271 *wl = hw->priv;
unsigned long flags;
- int q;
+ int q, mapping;
u8 hlid = 0;
- q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
+ mapping = skb_get_queue_mapping(skb);
+ q = wl1271_tx_get_queue(mapping);
if (wl->bss_type == BSS_TYPE_AP_BSS)
hlid = wl1271_tx_get_hlid(skb);
@@ -1513,10 +1514,10 @@
* 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 >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
- wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
- ieee80211_stop_queues(wl->hw);
- set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
+ if (skb_queue_len(&wl->tx_queue[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 */