[PATCH v28 01/20] net: Introduce direct data placement tcp offload

[Jakub Kicinski]

On Fri, 16 May 2025 17:47:34 +0300 Aurelien Aptel wrote:
> The offload works by calling the iter copy functions while skipping the
> memcpy (see patch 3).  We think the unreadable bit is getting close to
> what we want if it wasn't for the skb_datagram_iter() check. Maybe the
> bit could be unset at a later stage but it's not clear where.

Getting rid of the hack in iov_iter may be for the best, actually.
It's pretty ugly.