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    Subject[RFC PATCH 3/5] uapi/linux/virtio_net.h: Added USO types.
    Date
    Added new GSO type for USO: VIRTIO_NET_HDR_GSO_UDP_L4.
    Feature VIRTIO_NET_F_HOST_USO allows to enable NETIF_F_GSO_UDP_L4.
    Separated VIRTIO_NET_F_GUEST_USO4 & VIRTIO_NET_F_GUEST_USO6 features
    required for Windows guests.

    Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
    ---
    include/uapi/linux/virtio_net.h | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
    index 3f55a4215f11..620addc5767b 100644
    --- a/include/uapi/linux/virtio_net.h
    +++ b/include/uapi/linux/virtio_net.h
    @@ -56,6 +56,9 @@
    #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow
    * Steering */
    #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
    +#define VIRTIO_NET_F_GUEST_USO4 54 /* Guest can handle USOv4 in. */
    +#define VIRTIO_NET_F_GUEST_USO6 55 /* Guest can handle USOv6 in. */
    +#define VIRTIO_NET_F_HOST_USO 56 /* Host can handle USO in. */

    #define VIRTIO_NET_F_HASH_REPORT 57 /* Supports hash report */
    #define VIRTIO_NET_F_RSS 60 /* Supports RSS RX steering */
    @@ -130,6 +133,7 @@ struct virtio_net_hdr_v1 {
    #define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */
    #define VIRTIO_NET_HDR_GSO_UDP 3 /* GSO frame, IPv4 UDP (UFO) */
    #define VIRTIO_NET_HDR_GSO_TCPV6 4 /* GSO frame, IPv6 TCP */
    +#define VIRTIO_NET_HDR_GSO_UDP_L4 5 /* GSO frame, IPv4 & IPv6 UDP (USO) */
    #define VIRTIO_NET_HDR_GSO_ECN 0x80 /* TCP has ECN set */
    __u8 gso_type;
    __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */
    --
    2.34.1
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