Commit 860b7f27 authored by Andrew Melnychenko's avatar Andrew Melnychenko Committed by David S. Miller
Browse files

linux/virtio_net.h: Support USO offload in vnet header.



Now, it's possible to convert USO vnet packets from/to skb.
Added support for GSO_UDP_L4 offload.

Signed-off-by: default avatarAndrew Melnychenko <andrew@daynix.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 34061b34
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+9 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ static inline bool virtio_net_hdr_match_proto(__be16 protocol, __u8 gso_type)
	case VIRTIO_NET_HDR_GSO_TCPV6:
		return protocol == cpu_to_be16(ETH_P_IPV6);
	case VIRTIO_NET_HDR_GSO_UDP:
	case VIRTIO_NET_HDR_GSO_UDP_L4:
		return protocol == cpu_to_be16(ETH_P_IP) ||
		       protocol == cpu_to_be16(ETH_P_IPV6);
	default:
@@ -31,6 +32,7 @@ static inline int virtio_net_hdr_set_proto(struct sk_buff *skb,
	switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
	case VIRTIO_NET_HDR_GSO_TCPV4:
	case VIRTIO_NET_HDR_GSO_UDP:
	case VIRTIO_NET_HDR_GSO_UDP_L4:
		skb->protocol = cpu_to_be16(ETH_P_IP);
		break;
	case VIRTIO_NET_HDR_GSO_TCPV6:
@@ -69,6 +71,11 @@ static inline int virtio_net_hdr_to_skb(struct sk_buff *skb,
			ip_proto = IPPROTO_UDP;
			thlen = sizeof(struct udphdr);
			break;
		case VIRTIO_NET_HDR_GSO_UDP_L4:
			gso_type = SKB_GSO_UDP_L4;
			ip_proto = IPPROTO_UDP;
			thlen = sizeof(struct udphdr);
			break;
		default:
			return -EINVAL;
		}
@@ -182,6 +189,8 @@ static inline int virtio_net_hdr_from_skb(const struct sk_buff *skb,
			hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
		else if (sinfo->gso_type & SKB_GSO_TCPV6)
			hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
		else if (sinfo->gso_type & SKB_GSO_UDP_L4)
			hdr->gso_type = VIRTIO_NET_HDR_GSO_UDP_L4;
		else
			return -EINVAL;
		if (sinfo->gso_type & SKB_GSO_TCP_ECN)