linux-kernel - Re: [PATCH net 2/9] virtio-net: correctly xmit linearized page on XDP

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Date:   Fri, 23 Dec 2016 07:47:33 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Jason Wang <jasowang@...hat.com>, mst@...hat.com,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     john.r.fastabend@...el.com
Subject: Re: [PATCH net 2/9] virtio-net: correctly xmit linearized page on
 XDP_TX

On 16-12-23 06:37 AM, Jason Wang wrote:
> After we linearize page, we should xmit this page instead of the page
> of first buffer which may lead unexpected result. With this patch, we
> can see correct packet during XDP_TX.
> 
> Cc: John Fastabend <john.r.fastabend@...el.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>
> ---
>  drivers/net/virtio_net.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 1067253..fe4562d 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -572,7 +572,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
>  		if (unlikely(hdr->hdr.gso_type || hdr->hdr.flags))
>  			goto err_xdp;
>  
> -		act = do_xdp_prog(vi, rq, xdp_prog, page, offset, len);
> +		act = do_xdp_prog(vi, rq, xdp_prog, xdp_page, offset, len);
>  		switch (act) {
>  		case XDP_PASS:
>  			if (unlikely(xdp_page != page))
> 

Thanks clumsy merge conflict resolution between v4 and v6 versions :/

Acked-by: John Fastabend <john.r.fastabend@...el.com>