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authorBenjamin LaHaise <ben.lahaise@neterion.com>2009-08-04 10:20:44 +0000
committerDavid S. Miller <davem@davemloft.net>2009-08-05 13:10:43 -0700
commit4403b371888d5947ed08200ee6351441a188a5c7 (patch)
tree69b9f54df4340aab236206295da03b14683dc62f /drivers/net/vxge
parent36e89d73e54c8db79d0fd1636cab9236eea7aae9 (diff)
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: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxge')
-rw-r--r--drivers/net/vxge/vxge-main.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index 335140d2834..beee4ab2ed3 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -895,6 +895,12 @@ vxge_xmit(struct sk_buff *skb, struct net_device *dev)
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);
if (unlikely(status != VXGE_HW_OK)) {
vxge_debug_tx(VXGE_ERR,