Use the can_add_buf virtqueue operation to test if
there's room to add another buf to the queue.
Saves us one cycle of alloc-add-free if the queue
was full.
Signed-off-by: Amit Shah <amit.shah@xxxxxxxxxx>
---
drivers/net/virtio_net.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 2a6e81d..fd1d628 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -280,7 +280,7 @@ static void try_fill_recv_maxbufs(struct virtnet_info *vi)
int num, err, i;
sg_init_table(sg, 2+MAX_SKB_FRAGS);
- for (;;) {
+ while (vi->rvq->vq_ops->can_add_buf(vi->rvq)) {
struct virtio_net_hdr *hdr;
skb = netdev_alloc_skb(vi->dev, MAX_PACKET_LEN + NET_IP_ALIGN);
--
1.6.2.5
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