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virtio-net: introduce virtnet_receive() 

Move common receive logic to a new helper virtnet_receive(). It will
also be used by rx busy polling method.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Wang 2014-07-23 16:33:54 +08:00 committed by David S. Miller
parent 96b3bff4c9
commit 2ffa75988f
1 changed files with 14 additions and 5 deletions
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19
drivers/net/virtio_net.c
View File

@ -725,15 +725,12 @@ static void refill_work(struct work_struct *work)
} }
} }
static int virtnet_poll(struct napi_struct *napi, int budget) static int virtnet_receive(struct receive_queue *rq, int budget)
{ {
struct receive_queue *rq =
container_of(napi, struct receive_queue, napi);
struct virtnet_info *vi = rq->vq->vdev->priv; struct virtnet_info *vi = rq->vq->vdev->priv;
unsigned int len, received = 0;
void *buf; void *buf;
unsigned int r, len, received = 0;
again:
while (received < budget && while (received < budget &&
(buf = virtqueue_get_buf(rq->vq, &len)) != NULL) { (buf = virtqueue_get_buf(rq->vq, &len)) != NULL) {
receive_buf(rq, buf, len); receive_buf(rq, buf, len);
@ -745,6 +742,18 @@ again:
schedule_delayed_work(&vi->refill, 0); schedule_delayed_work(&vi->refill, 0);
} }
return received;
}
static int virtnet_poll(struct napi_struct *napi, int budget)
{
struct receive_queue *rq =
container_of(napi, struct receive_queue, napi);
unsigned int r, received = 0;
again:
received += virtnet_receive(rq, budget - received);
/* Out of packets? */ /* Out of packets? */
if (received < budget) { if (received < budget) {
r = virtqueue_enable_cb_prepare(rq->vq); r = virtqueue_enable_cb_prepare(rq->vq);