[net-next v2] virtio_net: replace netdev_alloc_skb_ip_align() with napi_alloc_skb()

[Paolo Abeni]

This gives small but noticeable rx performance improvement (2-3%)
and will allow exploiting future napi improvement.

Signed-off-by: Paolo Abeni <pab...@redhat.com>

--
 v2: replace also netdev_alloc_skb_ip_align() invocation in
        add_recvbuf_small(), suggested by Venkatesh Srinivas
---
 drivers/net/virtio_net.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index fb0eae4..100e039 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -260,7 +260,7 @@ static struct sk_buff *page_to_skb(struct virtnet_info *vi,
        p = page_address(page) + offset;
 
        /* copy small packet so we can reuse these pages for small data */
-       skb = netdev_alloc_skb_ip_align(vi->dev, GOOD_COPY_LEN);
+       skb = napi_alloc_skb(&rq->napi, GOOD_COPY_LEN);
        if (unlikely(!skb))
                return NULL;
 
@@ -541,7 +541,7 @@ static int add_recvbuf_small(struct virtnet_info *vi, 
struct receive_queue *rq,
        struct virtio_net_hdr_mrg_rxbuf *hdr;
        int err;
 
-       skb = __netdev_alloc_skb_ip_align(vi->dev, GOOD_PACKET_LEN, gfp);
+       skb = __napi_alloc_skb(&rq->napi, GOOD_PACKET_LEN, gfp);
        if (unlikely(!skb))
                return -ENOMEM;
 
-- 
1.8.3.1