On Mon, Jul 31, 2023 at 05:43:23PM -0700, Alexei Starovoitov wrote:

On Sat, Jul 29, 2023 at 05:57:21PM +0800, Geliang Tang wrote:

quoted

The main idea is to add a hook in sys_socket() to change the protocol id
from IPPROTO_TCP (or 0) to IPPROTO_MPTCP.

I still think it's a hack, but its blast radius is nicely contained.
And since I cannot propose any better I'm ok with it.

Patches 1-2 can be squashed into one.
Just like patches 3-6 as a single patch for selftests.

Thanks Alexei. I'll squash patch 1 and patch 2 into one, and squash patch 3
and patch 6 into one for selftests. But I prefer to keep patch 4 and patch 5
as is, since they were implemented in different times for different purposes.
They were merged into MPTCP repo on May 17 for "run MPTCP sched tests in a
dedicated ns" [1].

[1]
https://patchwork.kernel.org/project/mptcp/cover/cover.1684362296.git.geliang.tang@suse.com/

-Geliang

But before proceeding I'd like an explicit ack from netdev maintainers.