From: Pradeep Nemavat <pnemavat@xxxxxxxxxxx>
This is in preparation to support life time expiry of packets in the
hardware to avoid head-of-line blocking where a slow client can
hog a tx queue and affect the traffic to a faster client from the same
queue. Time stamp the packets in driver to allow dropping them in the
hardware if they are queued for more than 500ms.
Since queues are not being stopped now, we need to be prepared for
a situation where packets hit the driver after the queues are full.
Drop all such packets in the driver itself.
Signed-off-by: Pradeep Nemavat <pnemavat@xxxxxxxxxxx>
Signed-off-by: Nishant Sarmukadam <nishants@xxxxxxxxxxx>
---
drivers/net/wireless/mwl8k.c | 20 +++++++-------------
1 files changed, 7 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index ebaae35..7968301 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -1666,10 +1666,6 @@ mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
processed++;
}
- if (index < MWL8K_TX_WMM_QUEUES && processed && priv->radio_on &&
- !mutex_is_locked(&priv->fw_mutex))
- ieee80211_wake_queue(hw, index);
-
return processed;
}
@@ -1951,13 +1947,14 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
txq = priv->txq + index;
- if (index >= MWL8K_TX_WMM_QUEUES && txq->len >= MWL8K_TX_DESCS) {
- /* This is the case in which the tx packet is destined for an
- * AMPDU queue and that AMPDU queue is full. Because we don't
- * start and stop the AMPDU queues, we must drop these packets.
- */
- dev_kfree_skb(skb);
+ if (txq->len >= MWL8K_TX_DESCS) {
+ if (start_ba_session) {
+ spin_lock(&priv->stream_lock);
+ mwl8k_remove_stream(hw, stream);
+ spin_unlock(&priv->stream_lock);
+ }
spin_unlock_bh(&priv->tx_lock);
+ dev_kfree_skb(skb);
return;
}
@@ -1985,9 +1982,6 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
if (txq->tail == MWL8K_TX_DESCS)
txq->tail = 0;
- if (txq->head == txq->tail && index < MWL8K_TX_WMM_QUEUES)
- ieee80211_stop_queue(hw, index);
-
mwl8k_tx_start(priv);
spin_unlock_bh(&priv->tx_lock);
--
1.6.0.3
--
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