Re: [PATCH v5 net-next 24/36] net: Add MSG_DDP_CRC flag

On Thu, Jul 22, 2021 at 1:06 PM Boris Pismenny [off-list ref] wrote:

From: Yoray Zack <redacted>

if the msg sent with this flag, turn up skb->ddp_crc bit.

Signed-off-by: Yoray Zack <redacted>

Ok, but why ?

How would you document in linux manpages the purpose of this flag ?

How can applications be sure the kernel they run on is actually
supporting this flag ?
Maybe it is a hint only ?