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

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

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Melnychenko 2022-12-07 13:35:57 +02:00 committed by David S. Miller
parent 34061b348a
commit 860b7f27b8
1 changed files with 9 additions and 0 deletions
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9
include/linux/virtio_net.h
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@ -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)