linux-kernel - [PATCH net] virtio-net: unbreak cusmed packet for small buffer XDP

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Message-Id: <1498614843-8163-1-git-send-email-jasowang@redhat.com>
Date:   Wed, 28 Jun 2017 09:54:03 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     mst@...hat.com, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Jason Wang <jasowang@...hat.com>
Subject: [PATCH net] virtio-net: unbreak cusmed packet for small buffer XDP

We should allow csumed packet for small buffer, otherwise XDP_PASS
won't work correctly.

Fixes commit bb91accf2733 ("virtio-net: XDP support for small buffers")
Signed-off-by: Jason Wang <jasowang@...hat.com>
---
The patch is needed for -stable.
---
 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 143d8a9..499fcc9 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -413,7 +413,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
 		void *orig_data;
 		u32 act;
 
-		if (unlikely(hdr->hdr.gso_type || hdr->hdr.flags))
+		if (unlikely(hdr->hdr.gso_type))
 			goto err_xdp;
 
 		xdp.data_hard_start = buf + VIRTNET_RX_PAD + vi->hdr_len;
-- 
2.7.4