diff mbox series

[RFC,4/5] linux/virtio_net.h: Added Support for GSO_UDP_L4 offload.

Message ID 20220125084702.3636253-5-andrew@daynix.com (mailing list archive)
State RFC
Headers show
Series TUN/VirtioNet USO features support. | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 12 this patch: 12
netdev/cc_maintainers success CCed 3 of 3 maintainers
netdev/build_clang success Errors and warnings before: 5 this patch: 5
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 12 this patch: 12
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 35 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Andrew Melnichenko Jan. 25, 2022, 8:47 a.m. UTC 
Now, it's possible to convert vnet packets from/to skb.

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
---
 include/linux/virtio_net.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

Jason Wang Feb. 9, 2022, 4:42 a.m. UTC | #1 
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


>
> Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
> ---
>   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)
diff mbox series

Patch

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)