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-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 54bf0912b737..d9ebac8a2d99 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -517,8 +517,7 @@ 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. */
@@ -532,8 +531,17 @@ 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);