virtio-net: switch to use build_skb() for small buffer

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This patch switch to use build_skb() for small buffer which can have
better performance for both TCP and XDP (since we can work at page
before skb creation). It also remove lots of XDP codes since both
mergeable and small buffer use page frag during refill now.

                       Before   | After
XDP_DROP(xdp1) 64B  :  11.1Mpps | 14.4Mpps

Tested with xdp1/xdp2/xdp_ip_tx_tunnel and netperf.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2017-02-21 16:46:28 +08:00 • committed by David S. Miller

parent ca4ef4574f

commit f6b10209b9

1 changed files with 63 additions and 75 deletions

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138

drivers/net/virtio_net.c

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