Commit 4403b371 authored by Benjamin LaHaise's avatar Benjamin LaHaise Committed by David S. Miller

vxge: don't drop frame on tx queue full

The vxge driver will drop a packet in its transmit function if the number
of TxDs available hits 0.  Instead of doing that, simply stop the transmit
queue when transmitting a packet with the last available TxD.
Signed-off-by: default avatarBenjamin LaHaise <ben.lahaise@neterion.com>
Signed-off-by: default avatarSreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: default avatarRamkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 36e89d73
...@@ -895,6 +895,12 @@ vxge_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -895,6 +895,12 @@ vxge_xmit(struct sk_buff *skb, struct net_device *dev)
goto _exit2; goto _exit2;
} }
/* Last TXD? Stop tx queue to avoid dropping packets. TX
* completion will resume the queue.
*/
if (avail == 1)
vxge_stop_tx_queue(fifo);
status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv); status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
if (unlikely(status != VXGE_HW_OK)) { if (unlikely(status != VXGE_HW_OK)) {
vxge_debug_tx(VXGE_ERR, vxge_debug_tx(VXGE_ERR,
......
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