Re: [RFC PATCH 00/10] Device Memory TCP

On Tue, 18 Jul 2023 16:35:17 -0600 David Ahern wrote:

I do not see how 1 RSS context (or more specifically a h/w Rx queue) can
be used properly with memory from different processes (or dma-buf
references). When the process dies, that memory needs to be flushed from
the H/W queues. Queues with interlaced submissions make that more
complicated.

Agreed, one process, one control path socket.

FWIW the rtnetlink use of netlink is very basic. genetlink already has
some infra which allows associate state with a user socket and cleaning
it up when the socket gets closed. This needs some improvements. A bit
of a chicken and egg problem, I can't make the improvements until there
are families making use of it, and nobody will make use of it until
it's in tree... But the basics are already in place and I can help with
building it out.

I guess the devil is in the details; I look forward to the evolution of
the patches.

+1