On Fri, Jan 15, 2021 at 10:14 PM Xin Long [off-list ref] wrote:

Using skb_csum_is_sctp is a easier way to validate it's a SCTP
CRC checksum offload packet, and there is no need to parse the
packet to check its proto field, especially when it's a UDP or
GRE encapped packet.

So this patch also makes igb support SCTP CRC checksum offload
for UDP and GRE encapped packets.

Signed-off-by: Xin Long <lucien.xin@gmail.com>

Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>