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authorBenjamin LaHaise <ben.lahaise@neterion.com>2009-08-04 06:20:44 -0400
committerDavid S. Miller <davem@davemloft.net>2009-08-05 16:10:43 -0400
commit4403b371888d5947ed08200ee6351441a188a5c7 (patch)
tree69b9f54df4340aab236206295da03b14683dc62f
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>
-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 335140d2834a..beee4ab2ed30 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)
895 goto _exit2; 895 goto _exit2;
896 } 896 }
897 897
898 /* Last TXD? Stop tx queue to avoid dropping packets. TX
899 * completion will resume the queue.
900 */
901 if (avail == 1)
902 vxge_stop_tx_queue(fifo);
903
898 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv); 904 status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
899 if (unlikely(status != VXGE_HW_OK)) { 905 if (unlikely(status != VXGE_HW_OK)) {
900 vxge_debug_tx(VXGE_ERR, 906 vxge_debug_tx(VXGE_ERR,