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authorDavid S. Miller <davem@davemloft.net>2009-10-29 21:28:59 -0700
committerDavid S. Miller <davem@davemloft.net>2009-10-29 21:28:59 -0700
commit0519d83d83ed485b5a1f9222ff69d7d6c9bb8a01 (patch)
tree2e336be8a4bd2e59bcd4b69b00feb77c6672a9cb /drivers/net/virtio_net.c
parent38bfd8f5bec496e8e0db8849e01c99a33479418a (diff)
parentb5dd884e682cae6b8c037f9d11f3b623b4cf2011 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'drivers/net/virtio_net.c')
-rw-r--r--drivers/net/virtio_net.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index e78486504d3..95274678fe4 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -514,8 +514,7 @@ again:
/* Free up any pending old buffers before queueing new ones. */
free_old_xmit_skbs(vi);
- /* Put new one in send queue and do transmit */
- __skb_queue_head(&vi->send, skb);
+ /* Try to transmit */
capacity = xmit_skb(vi, skb);
/* This can happen with OOM and indirect buffers. */
@@ -529,8 +528,17 @@ again:
}
return NETDEV_TX_BUSY;
}
-
vi->svq->vq_ops->kick(vi->svq);
+
+ /*
+ * Put new one in send queue. You'd expect we'd need this before
+ * xmit_skb calls add_buf(), since the callback can be triggered
+ * immediately after that. But since the callback just triggers
+ * another call back here, normal network xmit locking prevents the
+ * race.
+ */
+ __skb_queue_head(&vi->send, skb);
+
/* Don't wait up for transmitted skbs to be freed. */
skb_orphan(skb);
nf_reset(skb);