From: Paolo Abeni <pabeni@redhat.com>
Date: Thu, 17 Mar 2016 14:44:00 +0000 (+0100)
Subject: virtio_net: replace netdev_alloc_skb_ip_align() with napi_alloc_skb()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c67f5db82027ba6d2ea4ac9176bc45996a03ae6a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

virtio_net: replace netdev_alloc_skb_ip_align() with napi_alloc_skb()

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

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 767ab11a6e9f..a43631696bcb 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -256,7 +256,7 @@ 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;