Commit 1276f24e authored by Mike Rapoport's avatar Mike Rapoport Committed by David S. Miller
Browse files

packet: use common code for virtio_net_hdr and skb GSO conversion 



Replace open coded conversion between virtio_net_hdr to skb GSO info with
virtio_net_hdr_from_skb

Signed-off-by: default avatarMike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e858fae2

net/packet/af_packet.c

+2 −34
Original line number Diff line number Diff line
@@ -1979,41 +1979,9 @@ static int __packet_rcv_vnet(const struct sk_buff *skb, 
{

	*vnet_hdr = (const struct virtio_net_hdr) { 0 };



	if (skb_is_gso(skb)) {

		struct skb_shared_info *sinfo = skb_shinfo(skb);



		/* This is a hint as to how much should be linear. */

		vnet_hdr->hdr_len =

			__cpu_to_virtio16(vio_le(), skb_headlen(skb));

		vnet_hdr->gso_size =

			__cpu_to_virtio16(vio_le(), sinfo->gso_size);



		if (sinfo->gso_type & SKB_GSO_TCPV4)

			vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;

		else if (sinfo->gso_type & SKB_GSO_TCPV6)

			vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;

		else if (sinfo->gso_type & SKB_GSO_UDP)

			vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_UDP;

		else if (sinfo->gso_type & SKB_GSO_FCOE)

			return -EINVAL;

		else

	if (virtio_net_hdr_from_skb(skb, vnet_hdr, vio_le()))

		BUG();



		if (sinfo->gso_type & SKB_GSO_TCP_ECN)

			vnet_hdr->gso_type |= VIRTIO_NET_HDR_GSO_ECN;

	} else

		vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE;



	if (skb->ip_summed == CHECKSUM_PARTIAL) {

		vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;

		vnet_hdr->csum_start = __cpu_to_virtio16(vio_le(),

				  skb_checksum_start_offset(skb));

		vnet_hdr->csum_offset = __cpu_to_virtio16(vio_le(),

						 skb->csum_offset);

	} else if (skb->ip_summed == CHECKSUM_UNNECESSARY) {

		vnet_hdr->flags = VIRTIO_NET_HDR_F_DATA_VALID;

	} /* else everything is zero */



	return 0;

}