On Sun, Dec 16, 2018 at 03:47:03PM -0800, John Fastabend wrote:
> This adds a size field to the sk_msg_md data structure used by SK_MSG
> programs. Without this in the zerocopy case and in the copy case
> where multiple iovs are in use its difficult to know how much data
> can be pulled in. The normal method of reading data and data_end
> only give the current contiguous buffer. BPF programs can attempt to
> pull in extra data but have to guess if it exists. This can result
> in multiple "guesses" its much better if we know upfront the size
> of the sk_msg.
Acked-by: Martin KaFai Lau <ka...@fb.com>
