On Wed, Sep 2, 2020 at 2:18 PM Huazhong Tan <tanhuazh...@huawei.com> wrote:
>
> In some cases, for UDP GSO, UDPv4 and UDPv6 need to be handled
> separately, for example, checksum offload, so add new GSO type
> SKB_GSO_UDPV6_L4 for UDPv6, and the old SKB_GSO_UDP_L4 stands
> for UDPv4.
This is in preparation for hardware you have that actually cares about
this distinction, I guess?
> diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
> index 2cc3cf8..b7c1a76 100644
> --- a/include/linux/netdev_features.h
> +++ b/include/linux/netdev_features.h
> @@ -54,6 +54,7 @@ enum {
> NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap
> */
> NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */
> NETIF_F_GSO_FRAGLIST_BIT, /* ... Fraglist GSO */
> + NETIF_F_GSO_UDPV6_L4_BIT, /* ... UDPv6 payload GSO (not UFO) */
> /**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
> NETIF_F_GSO_FRAGLIST_BIT,
Need to update NETIF_F_GSO_LAST then, too.
