Re: [RFC PATCH 4/5] linux/virtio_net.h: Added Support for GSO_UDP_L4 offload.
From: Jason Wang <jasowang@redhat.com>
Date: 2022-02-09 05:09:58
Also in:
lkml, netdev
在 2022/1/25 下午4:47, Andrew Melnychenko 写道:
Now, it's possible to convert vnet packets from/to skb.
I suggest to change the title to "net: support XXX offload in vnet header" Thanks
quoted hunk ↗ jump to hunk
Signed-off-by: Andrew Melnychenko <redacted> --- include/linux/virtio_net.h | 11 +++++++++++ 1 file changed, 11 insertions(+)diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h index a960de68ac69..9311d41d0a81 100644 --- a/include/linux/virtio_net.h +++ b/include/linux/virtio_net.h@@ -17,6 +17,9 @@ static inline bool virtio_net_hdr_match_proto(__be16 protocol, __u8 gso_type) case VIRTIO_NET_HDR_GSO_UDP: return protocol == cpu_to_be16(ETH_P_IP) || protocol == cpu_to_be16(ETH_P_IPV6); + case VIRTIO_NET_HDR_GSO_UDP_L4: + return protocol == cpu_to_be16(ETH_P_IP) || + protocol == cpu_to_be16(ETH_P_IPV6); default: return false; }@@ -31,6 +34,7 @@ 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 +73,11 @@ 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 +191,8 @@ 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)
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