From d1dc06dcd0f8fc559e449322d2fa4d769c289e00 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Tue, 14 Jun 2016 08:29:38 +0300 Subject: [PATCH] virtio_net: fix csum generation for virtio-net devices The commit e858fae2b0b8 ("virtio_net: use common code for virtio_net_hdr and skb GSO conversion") replaced the tun code for header manipulation with the generic helpers. While doing so, it implictly moved the skb_partial_csum_set() invocation after eth_type_trans(), which invalidate the current gso start/offset values. Fix it by moving the helper invocation before the mac pulling. Fixes: e858fae2b0b8 ("virtio_net: use common code for virtio_net_hdr and skb GSO conversion") Reported-by: David Ahern Signed-off-by: Mike Rapoport Signed-off-by: David S. Miller --- drivers/net/virtio_net.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index f9470f222258..1dd08d4b9c31 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -482,10 +482,6 @@ static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq, if (hdr->hdr.flags & VIRTIO_NET_HDR_F_DATA_VALID) skb->ip_summed = CHECKSUM_UNNECESSARY; - skb->protocol = eth_type_trans(skb, dev); - pr_debug("Receiving skb proto 0x%04x len %i type %i\n", - ntohs(skb->protocol), skb->len, skb->pkt_type); - if (virtio_net_hdr_to_skb(skb, &hdr->hdr, virtio_is_little_endian(vi->vdev))) { net_warn_ratelimited("%s: bad gso: type: %u, size: %u\n", @@ -494,6 +490,10 @@ static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq, goto frame_err; } + skb->protocol = eth_type_trans(skb, dev); + pr_debug("Receiving skb proto 0x%04x len %i type %i\n", + ntohs(skb->protocol), skb->len, skb->pkt_type); + napi_gro_receive(&rq->napi, skb); return; -- 2.30.2