From: Josh Hunt <joh...@akamai.com> Date: Mon, 13 Mar 2017 18:34:41 -0500
> In this particular case they really do want to know total # of bytes > in the receive queue, not the data bytes they can consume from an > application pov. The kernel currently only exposes this value through > netlink or /proc/net/udp from what I saw. Can you explain in what way this is useful? The difference between skb->len and skb->truesize is really kernel internal implementation detail, and I'm trying to figure out why this would be useful to an application.
