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

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.

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